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-rw-r--r--compiler/rustc_errors/src/emitter.rs177
-rw-r--r--tests/ui/codemap_tests/tab_2.stderr2
-rw-r--r--tests/ui/diagnostic-width/long-span.long.stderr2
-rw-r--r--tests/ui/diagnostic-width/long-span.longest.stderr2
-rw-r--r--tests/ui/diagnostic-width/long-span.short.stderr2
-rw-r--r--tests/ui/diagnostic-width/long-span.shortest.stderr2
-rw-r--r--tests/ui/diagnostic-width/non-1-width-unicode-multiline-label.ascii.stderr59
-rw-r--r--tests/ui/diagnostic-width/non-1-width-unicode-multiline-label.rs6
-rw-r--r--tests/ui/diagnostic-width/non-1-width-unicode-multiline-label.unicode.stderr59
-rw-r--r--tests/ui/diagnostic-width/non-whitespace-trimming-unicode.stderr8
-rw-r--r--tests/ui/diagnostic-width/tabs-trimming.stderr20
-rw-r--r--tests/ui/error-emitter/multiline-removal-suggestion.svg436
-rw-r--r--tests/ui/issues/issue-44078.stderr2
-rw-r--r--tests/ui/lexer/unterminated-nested-comment.stderr2
-rw-r--r--tests/ui/macros/not-utf8.stderr2
-rw-r--r--tests/ui/macros/same-sequence-span.stderr2
-rw-r--r--tests/ui/parser/byte-string-literals.stderr2
-rw-r--r--tests/ui/parser/raw/too-many-hash.stderr2
-rw-r--r--tests/ui/parser/unbalanced-doublequote.stderr2
-rw-r--r--tests/ui/rust-2024/reserved-guarded-strings.stderr2
20 files changed, 462 insertions, 329 deletions
diff --git a/compiler/rustc_errors/src/emitter.rs b/compiler/rustc_errors/src/emitter.rs
index 9277bae94ec..9a3c96776b9 100644
--- a/compiler/rustc_errors/src/emitter.rs
+++ b/compiler/rustc_errors/src/emitter.rs
@@ -113,24 +113,11 @@ impl Margin {
         self.computed_left > 0
     }
 
-    fn was_cut_right(&self, line_len: usize) -> bool {
-        let right =
-            if self.computed_right == self.span_right || self.computed_right == self.label_right {
-                // FIXME: This comment refers to the only callsite of this method.
-                //        Rephrase it or refactor it, so it can stand on its own.
-                // Account for the "..." padding given above. Otherwise we end up with code lines
-                // that do fit but end in "..." as if they were trimmed.
-                // FIXME: Don't hard-code this offset. Is this meant to represent
-                //        `2 * str_width(self.margin())`?
-                self.computed_right - 6
-            } else {
-                self.computed_right
-            };
-        right < line_len && self.computed_left + self.column_width < line_len
-    }
-
     fn compute(&mut self, max_line_len: usize) {
         // When there's a lot of whitespace (>20), we want to trim it as it is useless.
+        // FIXME: this doesn't account for '\t', but to do so correctly we need to perform that
+        // calculation later, right before printing in order to be accurate with both unicode
+        // handling and trimming of long lines.
         self.computed_left = if self.whitespace_left > 20 {
             self.whitespace_left - 16 // We want some padding.
         } else {
@@ -668,43 +655,43 @@ impl HumanEmitter {
         width_offset: usize,
         code_offset: usize,
         margin: Margin,
-    ) {
-        // Tabs are assumed to have been replaced by spaces in calling code.
-        debug_assert!(!source_string.contains('\t'));
+    ) -> usize {
         let line_len = source_string.len();
         // Create the source line we will highlight.
         let left = margin.left(line_len);
         let right = margin.right(line_len);
         // FIXME: The following code looks fishy. See #132860.
         // On long lines, we strip the source line, accounting for unicode.
-        let mut taken = 0;
         let code: String = source_string
             .chars()
-            .skip(left)
-            .take_while(|ch| {
-                // Make sure that the trimming on the right will fall within the terminal width.
-                let next = char_width(*ch);
-                if taken + next > right - left {
-                    return false;
-                }
-                taken += next;
-                true
-            })
+            .enumerate()
+            .skip_while(|(i, _)| *i < left)
+            .take_while(|(i, _)| *i < right)
+            .map(|(_, c)| c)
             .collect();
+        let code = normalize_whitespace(&code);
+        let was_cut_right =
+            source_string.chars().enumerate().skip_while(|(i, _)| *i < right).next().is_some();
         buffer.puts(line_offset, code_offset, &code, Style::Quotation);
         let placeholder = self.margin();
         if margin.was_cut_left() {
             // We have stripped some code/whitespace from the beginning, make it clear.
             buffer.puts(line_offset, code_offset, placeholder, Style::LineNumber);
         }
-        if margin.was_cut_right(line_len) {
+        if was_cut_right {
             let padding = str_width(placeholder);
             // We have stripped some code after the rightmost span end, make it clear we did so.
-            buffer.puts(line_offset, code_offset + taken - padding, placeholder, Style::LineNumber);
+            buffer.puts(
+                line_offset,
+                code_offset + str_width(&code) - padding,
+                placeholder,
+                Style::LineNumber,
+            );
         }
         buffer.puts(line_offset, 0, &self.maybe_anonymized(line_index), Style::LineNumber);
 
         self.draw_col_separator_no_space(buffer, line_offset, width_offset - 2);
+        left
     }
 
     #[instrument(level = "trace", skip(self), ret)]
@@ -736,22 +723,16 @@ impl HumanEmitter {
             return Vec::new();
         }
 
-        let source_string = match file.get_line(line.line_index - 1) {
-            Some(s) => normalize_whitespace(&s),
-            None => return Vec::new(),
+        let Some(source_string) = file.get_line(line.line_index - 1) else {
+            return Vec::new();
         };
         trace!(?source_string);
 
         let line_offset = buffer.num_lines();
 
-        // Left trim
-        let left = margin.left(source_string.len());
-
+        // Left trim.
         // FIXME: This looks fishy. See #132860.
-        // Account for unicode characters of width !=0 that were removed.
-        let left = source_string.chars().take(left).map(|ch| char_width(ch)).sum();
-
-        self.draw_line(
+        let left = self.draw_line(
             buffer,
             &source_string,
             line.line_index,
@@ -1033,12 +1014,18 @@ impl HumanEmitter {
             let pos = pos + 1;
             match annotation.annotation_type {
                 AnnotationType::MultilineStart(depth) | AnnotationType::MultilineEnd(depth) => {
+                    let pre: usize = source_string
+                        .chars()
+                        .take(annotation.start_col.file)
+                        .skip(left)
+                        .map(|c| char_width(c))
+                        .sum();
                     self.draw_range(
                         buffer,
                         underline.multiline_horizontal,
                         line_offset + pos,
                         width_offset + depth,
-                        (code_offset + annotation.start_col.display).saturating_sub(left),
+                        code_offset + pre,
                         underline.style,
                     );
                 }
@@ -1061,11 +1048,18 @@ impl HumanEmitter {
             let underline = self.underline(annotation.is_primary);
             let pos = pos + 1;
 
+            let code_offset = code_offset
+                + source_string
+                    .chars()
+                    .take(annotation.start_col.file)
+                    .skip(left)
+                    .map(|c| char_width(c))
+                    .sum::<usize>();
             if pos > 1 && (annotation.has_label() || annotation.takes_space()) {
                 for p in line_offset + 1..=line_offset + pos {
                     buffer.putc(
                         p,
-                        (code_offset + annotation.start_col.display).saturating_sub(left),
+                        code_offset,
                         match annotation.annotation_type {
                             AnnotationType::MultilineLine(_) => underline.multiline_vertical,
                             _ => underline.vertical_text_line,
@@ -1076,7 +1070,7 @@ impl HumanEmitter {
                 if let AnnotationType::MultilineStart(_) = annotation.annotation_type {
                     buffer.putc(
                         line_offset + pos,
-                        (code_offset + annotation.start_col.display).saturating_sub(left),
+                        code_offset,
                         underline.bottom_right,
                         underline.style,
                     );
@@ -1086,7 +1080,7 @@ impl HumanEmitter {
                 {
                     buffer.putc(
                         line_offset + pos,
-                        (code_offset + annotation.start_col.display).saturating_sub(left),
+                        code_offset,
                         underline.multiline_bottom_right_with_text,
                         underline.style,
                     );
@@ -1144,13 +1138,30 @@ impl HumanEmitter {
             let style =
                 if annotation.is_primary { Style::LabelPrimary } else { Style::LabelSecondary };
             let (pos, col) = if pos == 0 {
-                if annotation.end_col.display == 0 {
-                    (pos + 1, (annotation.end_col.display + 2).saturating_sub(left))
+                let pre: usize = source_string
+                    .chars()
+                    .take(annotation.end_col.file)
+                    .skip(left)
+                    .map(|c| char_width(c))
+                    .sum();
+                if annotation.end_col.file == 0 {
+                    (pos + 1, (pre + 2))
                 } else {
-                    (pos + 1, (annotation.end_col.display + 1).saturating_sub(left))
+                    let pad = if annotation.end_col.file - annotation.start_col.file == 0 {
+                        2
+                    } else {
+                        1
+                    };
+                    (pos + 1, (pre + pad))
                 }
             } else {
-                (pos + 2, annotation.start_col.display.saturating_sub(left))
+                let pre: usize = source_string
+                    .chars()
+                    .take(annotation.start_col.file)
+                    .skip(left)
+                    .map(|c| char_width(c))
+                    .sum();
+                (pos + 2, pre)
             };
             if let Some(ref label) = annotation.label {
                 buffer.puts(line_offset + pos, code_offset + col, label, style);
@@ -1183,14 +1194,35 @@ impl HumanEmitter {
         //   |  _^  test
         for &(pos, annotation) in &annotations_position {
             let uline = self.underline(annotation.is_primary);
-            for p in annotation.start_col.display..annotation.end_col.display {
+            let width = annotation.end_col.file - annotation.start_col.file;
+            let previous: String =
+                source_string.chars().take(annotation.start_col.file).skip(left).collect();
+            let underlined: String =
+                source_string.chars().skip(annotation.start_col.file).take(width).collect();
+            debug!(?previous, ?underlined);
+            let code_offset = code_offset
+                + source_string
+                    .chars()
+                    .take(annotation.start_col.file)
+                    .skip(left)
+                    .map(|c| char_width(c))
+                    .sum::<usize>();
+            let ann_width: usize = source_string
+                .chars()
+                .skip(annotation.start_col.file)
+                .take(width)
+                .map(|c| char_width(c))
+                .sum();
+            let ann_width = if ann_width == 0
+                && matches!(annotation.annotation_type, AnnotationType::Singleline)
+            {
+                1
+            } else {
+                ann_width
+            };
+            for p in 0..ann_width {
                 // The default span label underline.
-                buffer.putc(
-                    line_offset + 1,
-                    (code_offset + p).saturating_sub(left),
-                    uline.underline,
-                    uline.style,
-                );
+                buffer.putc(line_offset + 1, code_offset + p, uline.underline, uline.style);
             }
 
             if pos == 0
@@ -1202,7 +1234,7 @@ impl HumanEmitter {
                 // The beginning of a multiline span with its leftward moving line on the same line.
                 buffer.putc(
                     line_offset + 1,
-                    (code_offset + annotation.start_col.display).saturating_sub(left),
+                    code_offset,
                     match annotation.annotation_type {
                         AnnotationType::MultilineStart(_) => uline.top_right_flat,
                         AnnotationType::MultilineEnd(_) => uline.multiline_end_same_line,
@@ -1220,7 +1252,7 @@ impl HumanEmitter {
                 // so we start going down first.
                 buffer.putc(
                     line_offset + 1,
-                    (code_offset + annotation.start_col.display).saturating_sub(left),
+                    code_offset,
                     match annotation.annotation_type {
                         AnnotationType::MultilineStart(_) => uline.multiline_start_down,
                         AnnotationType::MultilineEnd(_) => uline.multiline_end_up,
@@ -1230,12 +1262,7 @@ impl HumanEmitter {
                 );
             } else if pos != 0 && annotation.has_label() {
                 // The beginning of a span label with an actual label, we'll point down.
-                buffer.putc(
-                    line_offset + 1,
-                    (code_offset + annotation.start_col.display).saturating_sub(left),
-                    uline.label_start,
-                    uline.style,
-                );
+                buffer.putc(line_offset + 1, code_offset, uline.label_start, uline.style);
             }
         }
 
@@ -1718,17 +1745,11 @@ impl HumanEmitter {
                         // non-rustc_lexer::is_whitespace() chars are reported as an
                         // error (ex. no-break-spaces \u{a0}), and thus can't be considered
                         // for removal during error reporting.
+                        // FIXME: doesn't account for '\t' properly.
                         let leading_whitespace = source_string
                             .chars()
                             .take_while(|c| rustc_lexer::is_whitespace(*c))
-                            .map(|c| {
-                                match c {
-                                    // Tabs are displayed as 4 spaces
-                                    '\t' => 4,
-                                    _ => 1,
-                                }
-                            })
-                            .sum();
+                            .count();
                         if source_string.chars().any(|c| !rustc_lexer::is_whitespace(c)) {
                             whitespace_margin = min(whitespace_margin, leading_whitespace);
                         }
@@ -1742,8 +1763,8 @@ impl HumanEmitter {
                 let mut span_left_margin = usize::MAX;
                 for line in &annotated_file.lines {
                     for ann in &line.annotations {
-                        span_left_margin = min(span_left_margin, ann.start_col.display);
-                        span_left_margin = min(span_left_margin, ann.end_col.display);
+                        span_left_margin = min(span_left_margin, ann.start_col.file);
+                        span_left_margin = min(span_left_margin, ann.end_col.file);
                     }
                 }
                 if span_left_margin == usize::MAX {
@@ -1763,12 +1784,12 @@ impl HumanEmitter {
                             .map_or(0, |s| s.len()),
                     );
                     for ann in &line.annotations {
-                        span_right_margin = max(span_right_margin, ann.start_col.display);
-                        span_right_margin = max(span_right_margin, ann.end_col.display);
+                        span_right_margin = max(span_right_margin, ann.start_col.file);
+                        span_right_margin = max(span_right_margin, ann.end_col.file);
                         // FIXME: account for labels not in the same line
                         let label_right = ann.label.as_ref().map_or(0, |l| l.len() + 1);
                         label_right_margin =
-                            max(label_right_margin, ann.end_col.display + label_right);
+                            max(label_right_margin, ann.end_col.file + label_right);
                     }
                 }
 
diff --git a/tests/ui/codemap_tests/tab_2.stderr b/tests/ui/codemap_tests/tab_2.stderr
index b22c7b42665..4f9a937155d 100644
--- a/tests/ui/codemap_tests/tab_2.stderr
+++ b/tests/ui/codemap_tests/tab_2.stderr
@@ -4,7 +4,7 @@ error[E0765]: unterminated double quote string
 LL |                   """;
    |  ___________________^
 LL | | }
-   | |_^
+   | |__^
 
 error: aborting due to 1 previous error
 
diff --git a/tests/ui/diagnostic-width/long-span.long.stderr b/tests/ui/diagnostic-width/long-span.long.stderr
index 81edde85b33..e39f4000d3c 100644
--- a/tests/ui/diagnostic-width/long-span.long.stderr
+++ b/tests/ui/diagnostic-width/long-span.long.stderr
@@ -1,7 +1,7 @@
 error[E0308]: mismatched types
    ╭▸ $DIR/long-span.rs:7:15

-LL │ …u8 = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, …, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]…
+LL │ …u8 = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, …, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0];
    ╰╴      ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━…━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ expected `u8`, found `[{integer}; 1680]`
 
 error: aborting due to 1 previous error
diff --git a/tests/ui/diagnostic-width/long-span.longest.stderr b/tests/ui/diagnostic-width/long-span.longest.stderr
index 77aafc5f426..8e2bad93692 100644
--- a/tests/ui/diagnostic-width/long-span.longest.stderr
+++ b/tests/ui/diagnostic-width/long-span.longest.stderr
@@ -1,7 +1,7 @@
 error[E0308]: mismatched types
   --> $DIR/long-span.rs:7:15
    |
-LL | ... = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,... 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, ...
+LL | ... = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,... 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0];
    |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^...^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected `u8`, found `[{integer}; 1680]`
 
 error: aborting due to 1 previous error
diff --git a/tests/ui/diagnostic-width/long-span.short.stderr b/tests/ui/diagnostic-width/long-span.short.stderr
index 8e62acc936c..73ee895a89b 100644
--- a/tests/ui/diagnostic-width/long-span.short.stderr
+++ b/tests/ui/diagnostic-width/long-span.short.stderr
@@ -1,7 +1,7 @@
 error[E0308]: mismatched types
    ╭▸ $DIR/long-span.rs:7:15

-LL │ …u8 = [0, 0, 0…0]…
+LL │ …u8 = [0, 0, 0…0];
    ╰╴      ━━━━━━━━…━━ expected `u8`, found `[{integer}; 1680]`
 
 error: aborting due to 1 previous error
diff --git a/tests/ui/diagnostic-width/long-span.shortest.stderr b/tests/ui/diagnostic-width/long-span.shortest.stderr
index d9cec96ad8f..2b485e75541 100644
--- a/tests/ui/diagnostic-width/long-span.shortest.stderr
+++ b/tests/ui/diagnostic-width/long-span.shortest.stderr
@@ -1,7 +1,7 @@
 error[E0308]: mismatched types
   --> $DIR/long-span.rs:7:15
    |
-LL | ... = [0, 0, 0......
+LL | ... = [0, 0, 0...0];
    |       ^^^^^^^^...^^ expected `u8`, found `[{integer}; 1680]`
 
 error: aborting due to 1 previous error
diff --git a/tests/ui/diagnostic-width/non-1-width-unicode-multiline-label.ascii.stderr b/tests/ui/diagnostic-width/non-1-width-unicode-multiline-label.ascii.stderr
index 4d8afb6f3ad..60ce0d9a148 100644
--- a/tests/ui/diagnostic-width/non-1-width-unicode-multiline-label.ascii.stderr
+++ b/tests/ui/diagnostic-width/non-1-width-unicode-multiline-label.ascii.stderr
@@ -1,11 +1,41 @@
 error[E0369]: cannot add `&str` to `&str`
-  --> $DIR/non-1-width-unicode-multiline-label.rs:7:260
+  --> $DIR/non-1-width-unicode-multiline-label.rs:7:237
    |
-LL | ...ཽཾཿ྄ཱྀྀྂྃ྅྆྇ྈྉྊྋྌྍྎྏྐྑྒྒྷྔྕྖྗ྘ྙྚྛྜྜྷྞྟྠྡྡྷྣྤྥྦྦྷྨྩྪྫྫྷྭྮྯྰྱྲླྴྵྶྷྸྐྵྺྻྼ྽྾྿࿀࿁࿂࿃࿄࿅࿆࿇...࿋࿌࿍࿎࿏࿐࿑࿒࿓࿔࿕࿖࿗࿘࿙࿚"; let _a = unicode_is_fun + " really fun!";
-   |                                                  -------------- ^ -------------- &str
-   |                                                  |              |
-   |                                                  |              `+` cannot be used to concatenate two `&str` strings
-   |                                                  &str
+LL | ...👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦"; let _a = unicode_is_fun + " really fun!";
+   |                                                           -------------- ^ -------------- &str
+   |                                                           |              |
+   |                                                           |              `+` cannot be used to concatenate two `&str` strings
+   |                                                           &str
+   |
+   = note: string concatenation requires an owned `String` on the left
+help: create an owned `String` from a string reference
+   |
+LL |     let _ = "👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦"; let _a = unicode_is_fun.to_owned() + " really fun!";
+   |                                                                                                                                                                                                                                                                                                                                                                                                                                                +++++++++++
+
+error[E0369]: cannot add `&str` to `&str`
+  --> $DIR/non-1-width-unicode-multiline-label.rs:9:384
+   |
+LL | ...👧👦👨👩👧👦👨👩👧👦"; let _a = unicode_is_fun + " really fun!";
+   |                                       -------------- ^ -------------- &str
+   |                                       |              |
+   |                                       |              `+` cannot be used to concatenate two `&str` strings
+   |                                       &str
+   |
+   = note: string concatenation requires an owned `String` on the left
+help: create an owned `String` from a string reference
+   |
+LL |     let _ = "👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦"; let _a = unicode_is_fun.to_owned() + " really fun!";
+   |                                                                                                                                                                                                                                                                                                                                                                                                                                                +++++++++++
+
+error[E0369]: cannot add `&str` to `&str`
+  --> $DIR/non-1-width-unicode-multiline-label.rs:11:260
+   |
+LL | ...࿇࿈࿉࿊࿋࿌࿍࿎࿏࿐࿑࿒࿓࿔࿕࿖࿗࿘࿙࿚"; let _a = unicode_is_fun + " really fun!";
+   |                                   -------------- ^ -------------- &str
+   |                                   |              |
+   |                                   |              `+` cannot be used to concatenate two `&str` strings
+   |                                   &str
    |
    = note: string concatenation requires an owned `String` on the left
 help: create an owned `String` from a string reference
@@ -13,6 +43,21 @@ help: create an owned `String` from a string reference
 LL |     let _ = "ༀ༁༂༃༄༅༆༇༈༉༊་༌།༎༏༐༑༒༓༔༕༖༗༘༙༚༛༜༝༞༟༠༡༢༣༤༥༦༧༨༩༪༫༬༭༮༯༰༱༲༳༴༵༶༷༸༹༺༻༼༽༾༿ཀཁགགྷངཅཆཇ཈ཉཊཋཌཌྷཎཏཐདདྷནཔཕབབྷམཙཚཛཛྷཝཞཟའཡརལཤཥསཧཨཀྵཪཫཬ཭཮཯཰ཱཱཱིིུུྲྀཷླྀཹེཻོཽཾཿ྄ཱྀྀྂྃ྅྆྇ྈྉྊྋྌྍྎྏྐྑྒྒྷྔྕྖྗ྘ྙྚྛྜྜྷྞྟྠྡྡྷྣྤྥྦྦྷྨྩྪྫྫྷྭྮྯྰྱྲླྴྵྶྷྸྐྵྺྻྼ྽྾྿࿀࿁࿂࿃࿄࿅࿆࿇࿈࿉࿊࿋࿌࿍࿎࿏࿐࿑࿒࿓࿔࿕࿖࿗࿘࿙࿚"; let _a = unicode_is_fun.to_owned() + " really fun!";
    |                                                                                                                                                                                         +++++++++++
 
-error: aborting due to 1 previous error
+error[E0369]: cannot add `&str` to `&str`
+  --> $DIR/non-1-width-unicode-multiline-label.rs:13:219
+   |
+LL | ...xxxxxxxxxxxxxxxxxxxx"; let _a = unicode_is_fun + " really fun!";
+   |                                    -------------- ^ -------------- &str
+   |                                    |              |
+   |                                    |              `+` cannot be used to concatenate two `&str` strings
+   |                                    &str
+   |
+   = note: string concatenation requires an owned `String` on the left
+help: create an owned `String` from a string reference
+   |
+LL |     let _ = "xxxxxxx👨👩👧👦xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx👨xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"; let _a = unicode_is_fun.to_owned() + " really fun!";
+   |                                                                                                                                                                                                                            +++++++++++
+
+error: aborting due to 4 previous errors
 
 For more information about this error, try `rustc --explain E0369`.
diff --git a/tests/ui/diagnostic-width/non-1-width-unicode-multiline-label.rs b/tests/ui/diagnostic-width/non-1-width-unicode-multiline-label.rs
index e630db8ba42..6b9b27f6297 100644
--- a/tests/ui/diagnostic-width/non-1-width-unicode-multiline-label.rs
+++ b/tests/ui/diagnostic-width/non-1-width-unicode-multiline-label.rs
@@ -4,6 +4,12 @@
 
 fn main() {
     let unicode_is_fun = "؁‱ஹ௸௵꧄.ဪ꧅⸻𒈙𒐫﷽𒌄𒈟𒍼𒁎𒀱𒌧𒅃 𒈓𒍙𒊎𒄡𒅌𒁏𒀰𒐪𒐩𒈙𒐫𪚥";
+    let _ = "👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦"; let _a = unicode_is_fun + " really fun!";
+    //[ascii]~^ ERROR cannot add `&str` to `&str`
+    let _ = "👨‍👩‍👧‍👦👨‍👩‍👧‍👦👨‍👩‍👧‍👦👨‍👩‍👧‍👦👨‍👩‍👧‍👦👨‍👩‍👧‍👦👨‍👩‍👧‍👦👨‍👩‍👧‍👦👨‍👩‍👧‍👦👨‍👩‍👧‍👦👨‍👩‍👧‍👦👨‍👩‍👧‍👦👨‍👩‍👧‍👦👨‍👩‍👧‍👦👨‍👩‍👧‍👦👨‍👩‍👧‍👦👨‍👩‍👧‍👦👨‍👩‍👧‍👦👨‍👩‍👧‍👦👨‍👩‍👧‍👦👨‍👩‍👧‍👦👨‍👩‍👧‍👦👨‍👩‍👧‍👦👨‍👩‍👧‍👦👨‍👩‍👧‍👦👨‍👩‍👧‍👦👨‍👩‍👧‍👦👨‍👩‍👧‍👦👨‍👩‍👧‍👦👨‍👩‍👧‍👦👨‍👩‍👧‍👦👨‍👩‍👧‍👦👨‍👩‍👧‍👦👨‍👩‍👧‍👦👨‍👩‍👧‍👦👨‍👩‍👧‍👦👨‍👩‍👧‍👦👨‍👩‍👧‍👦👨‍👩‍👧‍👦👨‍👩‍👧‍👦👨‍👩‍👧‍👦👨‍👩‍👧‍👦👨‍👩‍👧‍👦👨‍👩‍👧‍👦👨‍👩‍👧‍👦👨‍👩‍👧‍👦👨‍👩‍👧‍👦👨‍👩‍👧‍👦👨‍👩‍👧‍👦"; let _a = unicode_is_fun + " really fun!";
+    //[ascii]~^ ERROR cannot add `&str` to `&str`
     let _ = "ༀ༁༂༃༄༅༆༇༈༉༊་༌།༎༏༐༑༒༓༔༕༖༗༘༙༚༛༜༝༞༟༠༡༢༣༤༥༦༧༨༩༪༫༬༭༮༯༰༱༲༳༴༵༶༷༸༹༺༻༼༽༾༿ཀཁགགྷངཅཆཇ཈ཉཊཋཌཌྷཎཏཐདདྷནཔཕབབྷམཙཚཛཛྷཝཞཟའཡརལཤཥསཧཨཀྵཪཫཬ཭཮཯཰ཱཱཱིིུུྲྀཷླྀཹེཻོཽཾཿ྄ཱྀྀྂྃ྅྆྇ྈྉྊྋྌྍྎྏྐྑྒྒྷྔྕྖྗ྘ྙྚྛྜྜྷྞྟྠྡྡྷྣྤྥྦྦྷྨྩྪྫྫྷྭྮྯྰྱྲླྴྵྶྷྸྐྵྺྻྼ྽྾྿࿀࿁࿂࿃࿄࿅࿆࿇࿈࿉࿊࿋࿌࿍࿎࿏࿐࿑࿒࿓࿔࿕࿖࿗࿘࿙࿚"; let _a = unicode_is_fun + " really fun!";
     //[ascii]~^ ERROR cannot add `&str` to `&str`
+    let _ = "xxxxxxx👨‍👩‍👧‍👦xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx👨xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"; let _a = unicode_is_fun + " really fun!";
+    //[ascii]~^ ERROR cannot add `&str` to `&str`
 }
diff --git a/tests/ui/diagnostic-width/non-1-width-unicode-multiline-label.unicode.stderr b/tests/ui/diagnostic-width/non-1-width-unicode-multiline-label.unicode.stderr
index ed8ce770bb7..15b5dd9d7e2 100644
--- a/tests/ui/diagnostic-width/non-1-width-unicode-multiline-label.unicode.stderr
+++ b/tests/ui/diagnostic-width/non-1-width-unicode-multiline-label.unicode.stderr
@@ -1,11 +1,41 @@
 error[E0369]: cannot add `&str` to `&str`
-   ╭▸ $DIR/non-1-width-unicode-multiline-label.rs:7:260
+   ╭▸ $DIR/non-1-width-unicode-multiline-label.rs:7:237

-LL │ …ཻོཽཾཿ྄ཱྀྀྂྃ྅྆྇ྈྉྊྋྌྍྎྏྐྑྒྒྷྔྕྖྗ྘ྙྚྛྜྜྷྞྟྠྡྡྷྣྤྥྦྦྷྨྩྪྫྫྷྭྮྯྰྱྲླྴྵྶྷྸྐྵྺྻྼ྽྾྿࿀࿁࿂࿃࿄࿅࿆࿇࿈࿉…࿋࿌࿍࿎࿏࿐࿑࿒࿓࿔࿕࿖࿗࿘࿙࿚"; let _a = unicode_is_fun + " really fun!";
-   │                                                  ┬───────────── ┯ ────────────── &str
-   │                                                  │              │
-   │                                                  │              `+` cannot be used to concatenate two `&str` strings
-   │                                                  &str
+LL │ …👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦"; let _a = unicode_is_fun + " really fun!";
+   │                                                           ┬───────────── ┯ ────────────── &str
+   │                                                           │              │
+   │                                                           │              `+` cannot be used to concatenate two `&str` strings
+   │                                                           &str
+   │
+   ╰ note: string concatenation requires an owned `String` on the left
+help: create an owned `String` from a string reference
+   ╭╴
+LL │     let _ = "👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦"; let _a = unicode_is_fun.to_owned() + " really fun!";
+   ╰╴                                                                                                                                                                                                                                                                                                                                                                                                                                               +++++++++++
+
+error[E0369]: cannot add `&str` to `&str`
+   ╭▸ $DIR/non-1-width-unicode-multiline-label.rs:9:384
+   │
+LL │ …👨👩👧👦👨👩👧👦👨👩👧👦"; let _a = unicode_is_fun + " really fun!";
+   │                                       ┬───────────── ┯ ────────────── &str
+   │                                       │              │
+   │                                       │              `+` cannot be used to concatenate two `&str` strings
+   │                                       &str
+   │
+   ╰ note: string concatenation requires an owned `String` on the left
+help: create an owned `String` from a string reference
+   ╭╴
+LL │     let _ = "👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦👨👩👧👦"; let _a = unicode_is_fun.to_owned() + " really fun!";
+   ╰╴                                                                                                                                                                                                                                                                                                                                                                                                                                               +++++++++++
+
+error[E0369]: cannot add `&str` to `&str`
+   ╭▸ $DIR/non-1-width-unicode-multiline-label.rs:11:260
+   │
+LL │ …࿅࿆࿇࿈࿉࿊࿋࿌࿍࿎࿏࿐࿑࿒࿓࿔࿕࿖࿗࿘࿙࿚"; let _a = unicode_is_fun + " really fun!";
+   │                                   ┬───────────── ┯ ────────────── &str
+   │                                   │              │
+   │                                   │              `+` cannot be used to concatenate two `&str` strings
+   │                                   &str

    ╰ note: string concatenation requires an owned `String` on the left
 help: create an owned `String` from a string reference
@@ -13,6 +43,21 @@ help: create an owned `String` from a string reference
 LL │     let _ = "ༀ༁༂༃༄༅༆༇༈༉༊་༌།༎༏༐༑༒༓༔༕༖༗༘༙༚༛༜༝༞༟༠༡༢༣༤༥༦༧༨༩༪༫༬༭༮༯༰༱༲༳༴༵༶༷༸༹༺༻༼༽༾༿ཀཁགགྷངཅཆཇ཈ཉཊཋཌཌྷཎཏཐདདྷནཔཕབབྷམཙཚཛཛྷཝཞཟའཡརལཤཥསཧཨཀྵཪཫཬ཭཮཯཰ཱཱཱིིུུྲྀཷླྀཹེཻོཽཾཿ྄ཱྀྀྂྃ྅྆྇ྈྉྊྋྌྍྎྏྐྑྒྒྷྔྕྖྗ྘ྙྚྛྜྜྷྞྟྠྡྡྷྣྤྥྦྦྷྨྩྪྫྫྷྭྮྯྰྱྲླྴྵྶྷྸྐྵྺྻྼ྽྾྿࿀࿁࿂࿃࿄࿅࿆࿇࿈࿉࿊࿋࿌࿍࿎࿏࿐࿑࿒࿓࿔࿕࿖࿗࿘࿙࿚"; let _a = unicode_is_fun.to_owned() + " really fun!";
    ╰╴                                                                                                                                                                                        +++++++++++
 
-error: aborting due to 1 previous error
+error[E0369]: cannot add `&str` to `&str`
+   ╭▸ $DIR/non-1-width-unicode-multiline-label.rs:13:219
+   │
+LL │ …xxxxxxxxxxxxxxxxxxxxxx"; let _a = unicode_is_fun + " really fun!";
+   │                                    ┬───────────── ┯ ────────────── &str
+   │                                    │              │
+   │                                    │              `+` cannot be used to concatenate two `&str` strings
+   │                                    &str
+   │
+   ╰ note: string concatenation requires an owned `String` on the left
+help: create an owned `String` from a string reference
+   ╭╴
+LL │     let _ = "xxxxxxx👨👩👧👦xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx👨xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"; let _a = unicode_is_fun.to_owned() + " really fun!";
+   ╰╴                                                                                                                                                                                                                           +++++++++++
+
+error: aborting due to 4 previous errors
 
 For more information about this error, try `rustc --explain E0369`.
diff --git a/tests/ui/diagnostic-width/non-whitespace-trimming-unicode.stderr b/tests/ui/diagnostic-width/non-whitespace-trimming-unicode.stderr
index da3d8d31892..5408825d8cd 100644
--- a/tests/ui/diagnostic-width/non-whitespace-trimming-unicode.stderr
+++ b/tests/ui/diagnostic-width/non-whitespace-trimming-unicode.stderr
@@ -1,10 +1,10 @@
 error[E0308]: mismatched types
   --> $DIR/non-whitespace-trimming-unicode.rs:4:415
    |
-LL | ...♭♮♯♰♱♲♳♴♵♶♷♸♹♺♻♼♽♾♿⚀⚁⚂⚃⚄⚅⚆⚈⚉4"; let _: () = 42;  let _: &str = "🦀☀☁☂☃☄★☆☇☈☉☊☋☌☍☎☏☐☑☒☓  ☖☗☘☙☚☛☜☝☞☟☠☡☢☣☤☥☦☧☨☩☪☫☬☭☮☯☰☱☲☳☴☵☶☷☸☹☺☻☼☽☾☿♀♁♂♃♄...
-   |                                            --   ^^ expected `()`, found integer
-   |                                            |
-   |                                            expected due to this
+LL | ...♣♤♥♦♧♨♩♪♫♬♭♮♯♰♱♲♳♴♵♶♷♸♹♺♻♼♽♾♿⚀⚁⚂⚃⚄⚅⚆⚈⚉4"; let _: () = 42;  let _: &str = "🦀☀☁☂☃☄★☆☇☈☉☊☋☌☍☎☏☐☑☒☓  ☖☗☘☙☚☛☜☝☞☟☠☡☢☣☤☥☦☧☨☩☪☫☬☭☮☯☰☱☲☳☴☵☶☷☸☹☺☻☼...
+   |                                                      --   ^^ expected `()`, found integer
+   |                                                      |
+   |                                                      expected due to this
 
 error: aborting due to 1 previous error
 
diff --git a/tests/ui/diagnostic-width/tabs-trimming.stderr b/tests/ui/diagnostic-width/tabs-trimming.stderr
index 85103fbf6f5..a896345bd70 100644
--- a/tests/ui/diagnostic-width/tabs-trimming.stderr
+++ b/tests/ui/diagnostic-width/tabs-trimming.stderr
@@ -1,20 +1,20 @@
 error[E0408]: variable `v` is not bound in all patterns
   --> $DIR/tabs-trimming.rs:9:16
    |
-LL | ...   v @ 1 | 2 | 3 => panic!("You gave me too little money {}", v), // Long text here: TTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTT...
-   |       -       ^   ^ pattern doesn't bind `v`
-   |       |       |
-   |       |       pattern doesn't bind `v`
-   |       variable not in all patterns
+LL | ...                     v @ 1 | 2 | 3 => panic!("You gave me too little money {}", v), // Long text here: TTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTT...
+   |                         -       ^   ^ pattern doesn't bind `v`
+   |                         |       |
+   |                         |       pattern doesn't bind `v`
+   |                         variable not in all patterns
 
 error[E0381]: used binding `v` is possibly-uninitialized
   --> $DIR/tabs-trimming.rs:9:67
    |
-LL | ...   v @ 1 | 2 | 3 => panic!("You gave me too little money {}", v), // Long text here: TTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTT...
-   |       -                                                          ^ `v` used here but it is possibly-uninitialized
-   |       |
-   |       binding initialized here in some conditions
-   |       binding declared here but left uninitialized
+LL | ...                     v @ 1 | 2 | 3 => panic!("You gave me too little money {}", v), // Long text here: TTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTT...
+   |                         -                                                          ^ `v` used here but it is possibly-uninitialized
+   |                         |
+   |                         binding initialized here in some conditions
+   |                         binding declared here but left uninitialized
    |
    = note: this error originates in the macro `$crate::const_format_args` which comes from the expansion of the macro `panic` (in Nightly builds, run with -Z macro-backtrace for more info)
 
diff --git a/tests/ui/error-emitter/multiline-removal-suggestion.svg b/tests/ui/error-emitter/multiline-removal-suggestion.svg
index 95c7740f699..0820baaff09 100644
--- a/tests/ui/error-emitter/multiline-removal-suggestion.svg
+++ b/tests/ui/error-emitter/multiline-removal-suggestion.svg
@@ -1,4 +1,4 @@
-<svg width="1902px" height="4322px" xmlns="http://www.w3.org/2000/svg">
+<svg width="1902px" height="4466px" xmlns="http://www.w3.org/2000/svg">
   <style>
     .fg { fill: #AAAAAA }
     .bg { background: #000000 }
@@ -71,433 +71,449 @@
 </tspan>
     <tspan x="10px" y="460px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">|</tspan>
 </tspan>
-    <tspan x="10px" y="478px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-009 bold">/</tspan><tspan>     hm.into_iter()</tspan>
+    <tspan x="10px" y="478px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan>       hm.into_iter()</tspan>
 </tspan>
-    <tspan x="10px" y="496px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-009 bold">|</tspan><tspan>         .map(|(is_true, ts)| {</tspan>
+    <tspan x="10px" y="496px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-009 bold"> _____^</tspan>
 </tspan>
-    <tspan x="10px" y="514px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-009 bold">|</tspan><tspan>             ts.into_iter()</tspan>
+    <tspan x="10px" y="514px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-009 bold">|</tspan><tspan>         .map(|(is_true, ts)| {</tspan>
 </tspan>
-    <tspan x="10px" y="532px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-009 bold">|</tspan><tspan>                 .map(|t| {</tspan>
+    <tspan x="10px" y="532px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-009 bold">|</tspan><tspan>             ts.into_iter()</tspan>
 </tspan>
-    <tspan x="10px" y="550px"><tspan class="fg-ansi256-012 bold">...</tspan><tspan>  </tspan><tspan class="fg-ansi256-009 bold">|</tspan>
+    <tspan x="10px" y="550px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-009 bold">|</tspan><tspan>                 .map(|t| {</tspan>
 </tspan>
-    <tspan x="10px" y="568px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-009 bold">|</tspan><tspan>                 }).flatten()</tspan>
+    <tspan x="10px" y="568px"><tspan class="fg-ansi256-012 bold">...</tspan><tspan>  </tspan><tspan class="fg-ansi256-009 bold">|</tspan>
 </tspan>
-    <tspan x="10px" y="586px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-009 bold">|</tspan><tspan>         })</tspan>
+    <tspan x="10px" y="586px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-009 bold">|</tspan><tspan>                 }).flatten()</tspan>
 </tspan>
-    <tspan x="10px" y="604px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-009 bold">|__________^</tspan><tspan> </tspan><tspan class="fg-ansi256-009 bold">`(bool, HashSet&lt;u8&gt;)` is not an iterator</tspan>
+    <tspan x="10px" y="604px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-009 bold">|</tspan><tspan>         })</tspan>
 </tspan>
-    <tspan x="10px" y="622px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">|</tspan>
+    <tspan x="10px" y="622px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-009 bold">|__________^</tspan><tspan> </tspan><tspan class="fg-ansi256-009 bold">`(bool, HashSet&lt;u8&gt;)` is not an iterator</tspan>
 </tspan>
-    <tspan x="10px" y="640px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">= </tspan><tspan class="bold">help</tspan><tspan>: the trait `Iterator` is not implemented for `(bool, HashSet&lt;u8&gt;)`</tspan>
+    <tspan x="10px" y="640px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">|</tspan>
 </tspan>
-    <tspan x="10px" y="658px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">= </tspan><tspan class="bold">note</tspan><tspan>: required for `(bool, HashSet&lt;u8&gt;)` to implement `IntoIterator`</tspan>
+    <tspan x="10px" y="658px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">= </tspan><tspan class="bold">help</tspan><tspan>: the trait `Iterator` is not implemented for `(bool, HashSet&lt;u8&gt;)`</tspan>
 </tspan>
-    <tspan x="10px" y="676px"><tspan class="fg-ansi256-010 bold">note</tspan><tspan>: required by a bound in `Flatten`</tspan>
+    <tspan x="10px" y="676px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">= </tspan><tspan class="bold">note</tspan><tspan>: required for `(bool, HashSet&lt;u8&gt;)` to implement `IntoIterator`</tspan>
 </tspan>
-    <tspan x="10px" y="694px"><tspan>  </tspan><tspan class="fg-ansi256-012 bold">--&gt; </tspan><tspan>$SRC_DIR/core/src/iter/adapters/flatten.rs:LL:COL</tspan>
+    <tspan x="10px" y="694px"><tspan class="fg-ansi256-010 bold">note</tspan><tspan>: required by a bound in `Flatten`</tspan>
 </tspan>
-    <tspan x="10px" y="712px">
+    <tspan x="10px" y="712px"><tspan>  </tspan><tspan class="fg-ansi256-012 bold">--&gt; </tspan><tspan>$SRC_DIR/core/src/iter/adapters/flatten.rs:LL:COL</tspan>
 </tspan>
-    <tspan x="10px" y="730px"><tspan class="fg-ansi256-009 bold">error[E0599]</tspan><tspan class="bold">: the method `collect` exists for struct `Flatten&lt;Map&lt;IntoIter&lt;bool, Vec&lt;HashSet&lt;u8&gt;&gt;&gt;, {closure@multiline-removal-suggestion.rs:14:8}&gt;&gt;`, but its trait bounds were not satisfied</tspan>
+    <tspan x="10px" y="730px">
 </tspan>
-    <tspan x="10px" y="748px"><tspan>  </tspan><tspan class="fg-ansi256-012 bold">--&gt; </tspan><tspan>$DIR/multiline-removal-suggestion.rs:24:4</tspan>
+    <tspan x="10px" y="748px"><tspan class="fg-ansi256-009 bold">error[E0599]</tspan><tspan class="bold">: the method `collect` exists for struct `Flatten&lt;Map&lt;IntoIter&lt;bool, Vec&lt;HashSet&lt;u8&gt;&gt;&gt;, {closure@multiline-removal-suggestion.rs:14:8}&gt;&gt;`, but its trait bounds were not satisfied</tspan>
 </tspan>
-    <tspan x="10px" y="766px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">|</tspan>
+    <tspan x="10px" y="766px"><tspan>  </tspan><tspan class="fg-ansi256-012 bold">--&gt; </tspan><tspan>$DIR/multiline-removal-suggestion.rs:24:4</tspan>
 </tspan>
-    <tspan x="10px" y="784px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">/</tspan><tspan>     hm.into_iter()</tspan>
+    <tspan x="10px" y="784px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">|</tspan>
 </tspan>
-    <tspan x="10px" y="802px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan>         .map(|(is_true, ts)| {</tspan>
+    <tspan x="10px" y="802px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan>       hm.into_iter()</tspan>
 </tspan>
-    <tspan x="10px" y="820px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan>             ts.into_iter()</tspan>
+    <tspan x="10px" y="820px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold"> _____-</tspan>
 </tspan>
-    <tspan x="10px" y="838px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan>                 .map(|t| {</tspan>
+    <tspan x="10px" y="838px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan>         .map(|(is_true, ts)| {</tspan>
 </tspan>
-    <tspan x="10px" y="856px"><tspan class="fg-ansi256-012 bold">...</tspan><tspan>  </tspan><tspan class="fg-ansi256-012 bold">|</tspan>
+    <tspan x="10px" y="856px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan>             ts.into_iter()</tspan>
 </tspan>
-    <tspan x="10px" y="874px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan>         .flatten()</tspan>
+    <tspan x="10px" y="874px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan>                 .map(|t| {</tspan>
 </tspan>
-    <tspan x="10px" y="892px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan>         .collect()</tspan>
+    <tspan x="10px" y="892px"><tspan class="fg-ansi256-012 bold">...</tspan><tspan>  </tspan><tspan class="fg-ansi256-012 bold">|</tspan>
 </tspan>
-    <tspan x="10px" y="910px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan>         </tspan><tspan class="fg-ansi256-012 bold">-</tspan><tspan class="fg-ansi256-009 bold">^^^^^^^</tspan><tspan> </tspan><tspan class="fg-ansi256-009 bold">method cannot be called due to unsatisfied trait bounds</tspan>
+    <tspan x="10px" y="910px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan>         .flatten()</tspan>
 </tspan>
-    <tspan x="10px" y="928px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|_________|</tspan>
+    <tspan x="10px" y="928px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan>         .collect()</tspan>
 </tspan>
-    <tspan x="10px" y="946px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">|</tspan>
+    <tspan x="10px" y="946px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan>         </tspan><tspan class="fg-ansi256-012 bold">-</tspan><tspan class="fg-ansi256-009 bold">^^^^^^^</tspan><tspan> </tspan><tspan class="fg-ansi256-009 bold">method cannot be called due to unsatisfied trait bounds</tspan>
 </tspan>
-    <tspan x="10px" y="964px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">|</tspan>
+    <tspan x="10px" y="964px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|_________|</tspan>
 </tspan>
-    <tspan x="10px" y="982px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">= </tspan><tspan class="bold">note</tspan><tspan>: the following trait bounds were not satisfied:</tspan>
+    <tspan x="10px" y="982px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">|</tspan>
 </tspan>
-    <tspan x="10px" y="1000px"><tspan>           `&lt;Flatten&lt;Map&lt;std::vec::IntoIter&lt;HashSet&lt;u8&gt;&gt;, {closure@$DIR/multiline-removal-suggestion.rs:16:10: 16:13}&gt;&gt; as IntoIterator&gt;::IntoIter = _`</tspan>
+    <tspan x="10px" y="1000px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">|</tspan>
 </tspan>
-    <tspan x="10px" y="1018px"><tspan>           which is required by `Flatten&lt;Map&lt;std::collections::hash_map::IntoIter&lt;bool, Vec&lt;HashSet&lt;u8&gt;&gt;&gt;, {closure@$DIR/multiline-removal-suggestion.rs:14:8: 14:23}&gt;&gt;: Iterator`</tspan>
+    <tspan x="10px" y="1018px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">= </tspan><tspan class="bold">note</tspan><tspan>: the following trait bounds were not satisfied:</tspan>
 </tspan>
-    <tspan x="10px" y="1036px"><tspan>           `&lt;Flatten&lt;Map&lt;std::vec::IntoIter&lt;HashSet&lt;u8&gt;&gt;, {closure@$DIR/multiline-removal-suggestion.rs:16:10: 16:13}&gt;&gt; as IntoIterator&gt;::Item = _`</tspan>
+    <tspan x="10px" y="1036px"><tspan>           `&lt;Flatten&lt;Map&lt;std::vec::IntoIter&lt;HashSet&lt;u8&gt;&gt;, {closure@$DIR/multiline-removal-suggestion.rs:16:10: 16:13}&gt;&gt; as IntoIterator&gt;::IntoIter = _`</tspan>
 </tspan>
     <tspan x="10px" y="1054px"><tspan>           which is required by `Flatten&lt;Map&lt;std::collections::hash_map::IntoIter&lt;bool, Vec&lt;HashSet&lt;u8&gt;&gt;&gt;, {closure@$DIR/multiline-removal-suggestion.rs:14:8: 14:23}&gt;&gt;: Iterator`</tspan>
 </tspan>
-    <tspan x="10px" y="1072px"><tspan>           `Flatten&lt;Map&lt;std::vec::IntoIter&lt;HashSet&lt;u8&gt;&gt;, {closure@$DIR/multiline-removal-suggestion.rs:16:10: 16:13}&gt;&gt;: IntoIterator`</tspan>
+    <tspan x="10px" y="1072px"><tspan>           `&lt;Flatten&lt;Map&lt;std::vec::IntoIter&lt;HashSet&lt;u8&gt;&gt;, {closure@$DIR/multiline-removal-suggestion.rs:16:10: 16:13}&gt;&gt; as IntoIterator&gt;::Item = _`</tspan>
 </tspan>
     <tspan x="10px" y="1090px"><tspan>           which is required by `Flatten&lt;Map&lt;std::collections::hash_map::IntoIter&lt;bool, Vec&lt;HashSet&lt;u8&gt;&gt;&gt;, {closure@$DIR/multiline-removal-suggestion.rs:14:8: 14:23}&gt;&gt;: Iterator`</tspan>
 </tspan>
-    <tspan x="10px" y="1108px"><tspan>           `Flatten&lt;Map&lt;std::collections::hash_map::IntoIter&lt;bool, Vec&lt;HashSet&lt;u8&gt;&gt;&gt;, {closure@$DIR/multiline-removal-suggestion.rs:14:8: 14:23}&gt;&gt;: Iterator`</tspan>
+    <tspan x="10px" y="1108px"><tspan>           `Flatten&lt;Map&lt;std::vec::IntoIter&lt;HashSet&lt;u8&gt;&gt;, {closure@$DIR/multiline-removal-suggestion.rs:16:10: 16:13}&gt;&gt;: IntoIterator`</tspan>
 </tspan>
-    <tspan x="10px" y="1126px"><tspan>           which is required by `&amp;mut Flatten&lt;Map&lt;std::collections::hash_map::IntoIter&lt;bool, Vec&lt;HashSet&lt;u8&gt;&gt;&gt;, {closure@$DIR/multiline-removal-suggestion.rs:14:8: 14:23}&gt;&gt;: Iterator`</tspan>
+    <tspan x="10px" y="1126px"><tspan>           which is required by `Flatten&lt;Map&lt;std::collections::hash_map::IntoIter&lt;bool, Vec&lt;HashSet&lt;u8&gt;&gt;&gt;, {closure@$DIR/multiline-removal-suggestion.rs:14:8: 14:23}&gt;&gt;: Iterator`</tspan>
 </tspan>
-    <tspan x="10px" y="1144px">
+    <tspan x="10px" y="1144px"><tspan>           `Flatten&lt;Map&lt;std::collections::hash_map::IntoIter&lt;bool, Vec&lt;HashSet&lt;u8&gt;&gt;&gt;, {closure@$DIR/multiline-removal-suggestion.rs:14:8: 14:23}&gt;&gt;: Iterator`</tspan>
 </tspan>
-    <tspan x="10px" y="1162px"><tspan class="fg-ansi256-009 bold">error[E0277]</tspan><tspan class="bold">: `(bool, HashSet&lt;u8&gt;)` is not an iterator</tspan>
+    <tspan x="10px" y="1162px"><tspan>           which is required by `&amp;mut Flatten&lt;Map&lt;std::collections::hash_map::IntoIter&lt;bool, Vec&lt;HashSet&lt;u8&gt;&gt;&gt;, {closure@$DIR/multiline-removal-suggestion.rs:14:8: 14:23}&gt;&gt;: Iterator`</tspan>
 </tspan>
-    <tspan x="10px" y="1180px"><tspan>  </tspan><tspan class="fg-ansi256-012 bold">--&gt; </tspan><tspan>$DIR/multiline-removal-suggestion.rs:32:6</tspan>
+    <tspan x="10px" y="1180px">
 </tspan>
-    <tspan x="10px" y="1198px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">|</tspan>
+    <tspan x="10px" y="1198px"><tspan class="fg-ansi256-009 bold">error[E0277]</tspan><tspan class="bold">: `(bool, HashSet&lt;u8&gt;)` is not an iterator</tspan>
 </tspan>
-    <tspan x="10px" y="1216px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan>                 .flatten()</tspan>
+    <tspan x="10px" y="1216px"><tspan>  </tspan><tspan class="fg-ansi256-012 bold">--&gt; </tspan><tspan>$DIR/multiline-removal-suggestion.rs:32:6</tspan>
 </tspan>
-    <tspan x="10px" y="1234px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan>                  </tspan><tspan class="fg-ansi256-009 bold">^^^^^^^</tspan><tspan> </tspan><tspan class="fg-ansi256-009 bold">`(bool, HashSet&lt;u8&gt;)` is not an iterator</tspan>
+    <tspan x="10px" y="1234px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">|</tspan>
 </tspan>
-    <tspan x="10px" y="1252px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">|</tspan>
+    <tspan x="10px" y="1252px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan>                 .flatten()</tspan>
 </tspan>
-    <tspan x="10px" y="1270px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">= </tspan><tspan class="bold">help</tspan><tspan>: the trait `Iterator` is not implemented for `(bool, HashSet&lt;u8&gt;)`</tspan>
+    <tspan x="10px" y="1270px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan>                  </tspan><tspan class="fg-ansi256-009 bold">^^^^^^^</tspan><tspan> </tspan><tspan class="fg-ansi256-009 bold">`(bool, HashSet&lt;u8&gt;)` is not an iterator</tspan>
 </tspan>
-    <tspan x="10px" y="1288px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">= </tspan><tspan class="bold">note</tspan><tspan>: required for `(bool, HashSet&lt;u8&gt;)` to implement `IntoIterator`</tspan>
+    <tspan x="10px" y="1288px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">|</tspan>
 </tspan>
-    <tspan x="10px" y="1306px"><tspan class="fg-ansi256-010 bold">note</tspan><tspan>: required by a bound in `flatten`</tspan>
+    <tspan x="10px" y="1306px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">= </tspan><tspan class="bold">help</tspan><tspan>: the trait `Iterator` is not implemented for `(bool, HashSet&lt;u8&gt;)`</tspan>
 </tspan>
-    <tspan x="10px" y="1324px"><tspan>  </tspan><tspan class="fg-ansi256-012 bold">--&gt; </tspan><tspan>$SRC_DIR/core/src/iter/traits/iterator.rs:LL:COL</tspan>
+    <tspan x="10px" y="1324px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">= </tspan><tspan class="bold">note</tspan><tspan>: required for `(bool, HashSet&lt;u8&gt;)` to implement `IntoIterator`</tspan>
 </tspan>
-    <tspan x="10px" y="1342px"><tspan class="fg-ansi256-014 bold">help</tspan><tspan>: consider removing this method call, as the receiver has type `std::vec::IntoIter&lt;HashSet&lt;u8&gt;&gt;` and `std::vec::IntoIter&lt;HashSet&lt;u8&gt;&gt;: Iterator` trivially holds</tspan>
+    <tspan x="10px" y="1342px"><tspan class="fg-ansi256-010 bold">note</tspan><tspan>: required by a bound in `flatten`</tspan>
 </tspan>
-    <tspan x="10px" y="1360px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">|</tspan>
+    <tspan x="10px" y="1360px"><tspan>  </tspan><tspan class="fg-ansi256-012 bold">--&gt; </tspan><tspan>$SRC_DIR/core/src/iter/traits/iterator.rs:LL:COL</tspan>
 </tspan>
-    <tspan x="10px" y="1378px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-009">- </tspan><tspan>            ts.into_iter()</tspan>
+    <tspan x="10px" y="1378px"><tspan class="fg-ansi256-014 bold">help</tspan><tspan>: consider removing this method call, as the receiver has type `std::vec::IntoIter&lt;HashSet&lt;u8&gt;&gt;` and `std::vec::IntoIter&lt;HashSet&lt;u8&gt;&gt;: Iterator` trivially holds</tspan>
 </tspan>
-    <tspan x="10px" y="1396px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-009">-                 .map(|t| (is_true, t))</tspan>
+    <tspan x="10px" y="1396px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">|</tspan>
 </tspan>
-    <tspan x="10px" y="1414px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-010">+ </tspan><tspan>            ts.into_iter()</tspan>
+    <tspan x="10px" y="1414px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-009">- </tspan><tspan>            ts.into_iter()</tspan>
 </tspan>
-    <tspan x="10px" y="1432px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">|</tspan>
+    <tspan x="10px" y="1432px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-009">-                 .map(|t| (is_true, t))</tspan>
 </tspan>
-    <tspan x="10px" y="1450px">
+    <tspan x="10px" y="1450px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-010">+ </tspan><tspan>            ts.into_iter()</tspan>
 </tspan>
-    <tspan x="10px" y="1468px"><tspan class="fg-ansi256-009 bold">error[E0277]</tspan><tspan class="bold">: `(bool, HashSet&lt;u8&gt;)` is not an iterator</tspan>
+    <tspan x="10px" y="1468px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">|</tspan>
 </tspan>
-    <tspan x="10px" y="1486px"><tspan>  </tspan><tspan class="fg-ansi256-012 bold">--&gt; </tspan><tspan>$DIR/multiline-removal-suggestion.rs:28:2</tspan>
+    <tspan x="10px" y="1486px">
 </tspan>
-    <tspan x="10px" y="1504px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">|</tspan>
+    <tspan x="10px" y="1504px"><tspan class="fg-ansi256-009 bold">error[E0277]</tspan><tspan class="bold">: `(bool, HashSet&lt;u8&gt;)` is not an iterator</tspan>
 </tspan>
-    <tspan x="10px" y="1522px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-009 bold">/</tspan><tspan>     hm.into_iter()</tspan>
+    <tspan x="10px" y="1522px"><tspan>  </tspan><tspan class="fg-ansi256-012 bold">--&gt; </tspan><tspan>$DIR/multiline-removal-suggestion.rs:28:2</tspan>
 </tspan>
-    <tspan x="10px" y="1540px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-009 bold">|</tspan><tspan>         .map(|(is_true, ts)| {</tspan>
+    <tspan x="10px" y="1540px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">|</tspan>
 </tspan>
-    <tspan x="10px" y="1558px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-009 bold">|</tspan><tspan>             ts.into_iter()</tspan>
+    <tspan x="10px" y="1558px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan>       hm.into_iter()</tspan>
 </tspan>
-    <tspan x="10px" y="1576px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-009 bold">|</tspan><tspan>                 .map(|t| (is_true, t))</tspan>
+    <tspan x="10px" y="1576px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-009 bold"> _____^</tspan>
 </tspan>
-    <tspan x="10px" y="1594px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-009 bold">|</tspan><tspan>                 .flatten()</tspan>
+    <tspan x="10px" y="1594px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-009 bold">|</tspan><tspan>         .map(|(is_true, ts)| {</tspan>
 </tspan>
-    <tspan x="10px" y="1612px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-009 bold">|</tspan><tspan>         })</tspan>
+    <tspan x="10px" y="1612px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-009 bold">|</tspan><tspan>             ts.into_iter()</tspan>
 </tspan>
-    <tspan x="10px" y="1630px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-009 bold">|__________^</tspan><tspan> </tspan><tspan class="fg-ansi256-009 bold">`(bool, HashSet&lt;u8&gt;)` is not an iterator</tspan>
+    <tspan x="10px" y="1630px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-009 bold">|</tspan><tspan>                 .map(|t| (is_true, t))</tspan>
 </tspan>
-    <tspan x="10px" y="1648px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">|</tspan>
+    <tspan x="10px" y="1648px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-009 bold">|</tspan><tspan>                 .flatten()</tspan>
 </tspan>
-    <tspan x="10px" y="1666px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">= </tspan><tspan class="bold">help</tspan><tspan>: the trait `Iterator` is not implemented for `(bool, HashSet&lt;u8&gt;)`</tspan>
+    <tspan x="10px" y="1666px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-009 bold">|</tspan><tspan>         })</tspan>
 </tspan>
-    <tspan x="10px" y="1684px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">= </tspan><tspan class="bold">note</tspan><tspan>: required for `(bool, HashSet&lt;u8&gt;)` to implement `IntoIterator`</tspan>
+    <tspan x="10px" y="1684px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-009 bold">|__________^</tspan><tspan> </tspan><tspan class="fg-ansi256-009 bold">`(bool, HashSet&lt;u8&gt;)` is not an iterator</tspan>
 </tspan>
-    <tspan x="10px" y="1702px"><tspan class="fg-ansi256-010 bold">note</tspan><tspan>: required by a bound in `Flatten`</tspan>
+    <tspan x="10px" y="1702px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">|</tspan>
 </tspan>
-    <tspan x="10px" y="1720px"><tspan>  </tspan><tspan class="fg-ansi256-012 bold">--&gt; </tspan><tspan>$SRC_DIR/core/src/iter/adapters/flatten.rs:LL:COL</tspan>
+    <tspan x="10px" y="1720px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">= </tspan><tspan class="bold">help</tspan><tspan>: the trait `Iterator` is not implemented for `(bool, HashSet&lt;u8&gt;)`</tspan>
 </tspan>
-    <tspan x="10px" y="1738px">
+    <tspan x="10px" y="1738px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">= </tspan><tspan class="bold">note</tspan><tspan>: required for `(bool, HashSet&lt;u8&gt;)` to implement `IntoIterator`</tspan>
 </tspan>
-    <tspan x="10px" y="1756px"><tspan class="fg-ansi256-009 bold">error[E0599]</tspan><tspan class="bold">: the method `collect` exists for struct `Flatten&lt;Map&lt;IntoIter&lt;bool, Vec&lt;HashSet&lt;u8&gt;&gt;&gt;, {closure@multiline-removal-suggestion.rs:29:8}&gt;&gt;`, but its trait bounds were not satisfied</tspan>
+    <tspan x="10px" y="1756px"><tspan class="fg-ansi256-010 bold">note</tspan><tspan>: required by a bound in `Flatten`</tspan>
 </tspan>
-    <tspan x="10px" y="1774px"><tspan>  </tspan><tspan class="fg-ansi256-012 bold">--&gt; </tspan><tspan>$DIR/multiline-removal-suggestion.rs:35:4</tspan>
+    <tspan x="10px" y="1774px"><tspan>  </tspan><tspan class="fg-ansi256-012 bold">--&gt; </tspan><tspan>$SRC_DIR/core/src/iter/adapters/flatten.rs:LL:COL</tspan>
 </tspan>
-    <tspan x="10px" y="1792px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">|</tspan>
+    <tspan x="10px" y="1792px">
 </tspan>
-    <tspan x="10px" y="1810px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">/</tspan><tspan>     hm.into_iter()</tspan>
+    <tspan x="10px" y="1810px"><tspan class="fg-ansi256-009 bold">error[E0599]</tspan><tspan class="bold">: the method `collect` exists for struct `Flatten&lt;Map&lt;IntoIter&lt;bool, Vec&lt;HashSet&lt;u8&gt;&gt;&gt;, {closure@multiline-removal-suggestion.rs:29:8}&gt;&gt;`, but its trait bounds were not satisfied</tspan>
 </tspan>
-    <tspan x="10px" y="1828px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan>         .map(|(is_true, ts)| {</tspan>
+    <tspan x="10px" y="1828px"><tspan>  </tspan><tspan class="fg-ansi256-012 bold">--&gt; </tspan><tspan>$DIR/multiline-removal-suggestion.rs:35:4</tspan>
 </tspan>
-    <tspan x="10px" y="1846px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan>             ts.into_iter()</tspan>
+    <tspan x="10px" y="1846px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">|</tspan>
 </tspan>
-    <tspan x="10px" y="1864px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan>                 .map(|t| (is_true, t))</tspan>
+    <tspan x="10px" y="1864px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan>       hm.into_iter()</tspan>
 </tspan>
-    <tspan x="10px" y="1882px"><tspan class="fg-ansi256-012 bold">...</tspan><tspan>  </tspan><tspan class="fg-ansi256-012 bold">|</tspan>
+    <tspan x="10px" y="1882px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold"> _____-</tspan>
 </tspan>
-    <tspan x="10px" y="1900px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan>         .flatten()</tspan>
+    <tspan x="10px" y="1900px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan>         .map(|(is_true, ts)| {</tspan>
 </tspan>
-    <tspan x="10px" y="1918px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan>         .collect()</tspan>
+    <tspan x="10px" y="1918px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan>             ts.into_iter()</tspan>
 </tspan>
-    <tspan x="10px" y="1936px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan>         </tspan><tspan class="fg-ansi256-012 bold">-</tspan><tspan class="fg-ansi256-009 bold">^^^^^^^</tspan><tspan> </tspan><tspan class="fg-ansi256-009 bold">method cannot be called due to unsatisfied trait bounds</tspan>
+    <tspan x="10px" y="1936px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan>                 .map(|t| (is_true, t))</tspan>
 </tspan>
-    <tspan x="10px" y="1954px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|_________|</tspan>
+    <tspan x="10px" y="1954px"><tspan class="fg-ansi256-012 bold">...</tspan><tspan>  </tspan><tspan class="fg-ansi256-012 bold">|</tspan>
 </tspan>
-    <tspan x="10px" y="1972px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">|</tspan>
+    <tspan x="10px" y="1972px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan>         .flatten()</tspan>
 </tspan>
-    <tspan x="10px" y="1990px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">|</tspan>
+    <tspan x="10px" y="1990px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan>         .collect()</tspan>
 </tspan>
-    <tspan x="10px" y="2008px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">= </tspan><tspan class="bold">note</tspan><tspan>: the following trait bounds were not satisfied:</tspan>
+    <tspan x="10px" y="2008px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan>         </tspan><tspan class="fg-ansi256-012 bold">-</tspan><tspan class="fg-ansi256-009 bold">^^^^^^^</tspan><tspan> </tspan><tspan class="fg-ansi256-009 bold">method cannot be called due to unsatisfied trait bounds</tspan>
 </tspan>
-    <tspan x="10px" y="2026px"><tspan>           `&lt;Flatten&lt;Map&lt;std::vec::IntoIter&lt;HashSet&lt;u8&gt;&gt;, {closure@$DIR/multiline-removal-suggestion.rs:31:10: 31:13}&gt;&gt; as IntoIterator&gt;::IntoIter = _`</tspan>
+    <tspan x="10px" y="2026px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|_________|</tspan>
 </tspan>
-    <tspan x="10px" y="2044px"><tspan>           which is required by `Flatten&lt;Map&lt;std::collections::hash_map::IntoIter&lt;bool, Vec&lt;HashSet&lt;u8&gt;&gt;&gt;, {closure@$DIR/multiline-removal-suggestion.rs:29:8: 29:23}&gt;&gt;: Iterator`</tspan>
+    <tspan x="10px" y="2044px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">|</tspan>
 </tspan>
-    <tspan x="10px" y="2062px"><tspan>           `&lt;Flatten&lt;Map&lt;std::vec::IntoIter&lt;HashSet&lt;u8&gt;&gt;, {closure@$DIR/multiline-removal-suggestion.rs:31:10: 31:13}&gt;&gt; as IntoIterator&gt;::Item = _`</tspan>
+    <tspan x="10px" y="2062px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">|</tspan>
 </tspan>
-    <tspan x="10px" y="2080px"><tspan>           which is required by `Flatten&lt;Map&lt;std::collections::hash_map::IntoIter&lt;bool, Vec&lt;HashSet&lt;u8&gt;&gt;&gt;, {closure@$DIR/multiline-removal-suggestion.rs:29:8: 29:23}&gt;&gt;: Iterator`</tspan>
+    <tspan x="10px" y="2080px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">= </tspan><tspan class="bold">note</tspan><tspan>: the following trait bounds were not satisfied:</tspan>
 </tspan>
-    <tspan x="10px" y="2098px"><tspan>           `Flatten&lt;Map&lt;std::vec::IntoIter&lt;HashSet&lt;u8&gt;&gt;, {closure@$DIR/multiline-removal-suggestion.rs:31:10: 31:13}&gt;&gt;: IntoIterator`</tspan>
+    <tspan x="10px" y="2098px"><tspan>           `&lt;Flatten&lt;Map&lt;std::vec::IntoIter&lt;HashSet&lt;u8&gt;&gt;, {closure@$DIR/multiline-removal-suggestion.rs:31:10: 31:13}&gt;&gt; as IntoIterator&gt;::IntoIter = _`</tspan>
 </tspan>
     <tspan x="10px" y="2116px"><tspan>           which is required by `Flatten&lt;Map&lt;std::collections::hash_map::IntoIter&lt;bool, Vec&lt;HashSet&lt;u8&gt;&gt;&gt;, {closure@$DIR/multiline-removal-suggestion.rs:29:8: 29:23}&gt;&gt;: Iterator`</tspan>
 </tspan>
-    <tspan x="10px" y="2134px"><tspan>           `Flatten&lt;Map&lt;std::collections::hash_map::IntoIter&lt;bool, Vec&lt;HashSet&lt;u8&gt;&gt;&gt;, {closure@$DIR/multiline-removal-suggestion.rs:29:8: 29:23}&gt;&gt;: Iterator`</tspan>
+    <tspan x="10px" y="2134px"><tspan>           `&lt;Flatten&lt;Map&lt;std::vec::IntoIter&lt;HashSet&lt;u8&gt;&gt;, {closure@$DIR/multiline-removal-suggestion.rs:31:10: 31:13}&gt;&gt; as IntoIterator&gt;::Item = _`</tspan>
 </tspan>
-    <tspan x="10px" y="2152px"><tspan>           which is required by `&amp;mut Flatten&lt;Map&lt;std::collections::hash_map::IntoIter&lt;bool, Vec&lt;HashSet&lt;u8&gt;&gt;&gt;, {closure@$DIR/multiline-removal-suggestion.rs:29:8: 29:23}&gt;&gt;: Iterator`</tspan>
+    <tspan x="10px" y="2152px"><tspan>           which is required by `Flatten&lt;Map&lt;std::collections::hash_map::IntoIter&lt;bool, Vec&lt;HashSet&lt;u8&gt;&gt;&gt;, {closure@$DIR/multiline-removal-suggestion.rs:29:8: 29:23}&gt;&gt;: Iterator`</tspan>
 </tspan>
-    <tspan x="10px" y="2170px">
+    <tspan x="10px" y="2170px"><tspan>           `Flatten&lt;Map&lt;std::vec::IntoIter&lt;HashSet&lt;u8&gt;&gt;, {closure@$DIR/multiline-removal-suggestion.rs:31:10: 31:13}&gt;&gt;: IntoIterator`</tspan>
 </tspan>
-    <tspan x="10px" y="2188px"><tspan class="fg-ansi256-009 bold">error[E0277]</tspan><tspan class="bold">: `(bool, HashSet&lt;u8&gt;)` is not an iterator</tspan>
+    <tspan x="10px" y="2188px"><tspan>           which is required by `Flatten&lt;Map&lt;std::collections::hash_map::IntoIter&lt;bool, Vec&lt;HashSet&lt;u8&gt;&gt;&gt;, {closure@$DIR/multiline-removal-suggestion.rs:29:8: 29:23}&gt;&gt;: Iterator`</tspan>
 </tspan>
-    <tspan x="10px" y="2206px"><tspan>  </tspan><tspan class="fg-ansi256-012 bold">--&gt; </tspan><tspan>$DIR/multiline-removal-suggestion.rs:43:7</tspan>
+    <tspan x="10px" y="2206px"><tspan>           `Flatten&lt;Map&lt;std::collections::hash_map::IntoIter&lt;bool, Vec&lt;HashSet&lt;u8&gt;&gt;&gt;, {closure@$DIR/multiline-removal-suggestion.rs:29:8: 29:23}&gt;&gt;: Iterator`</tspan>
 </tspan>
-    <tspan x="10px" y="2224px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">|</tspan>
+    <tspan x="10px" y="2224px"><tspan>           which is required by `&amp;mut Flatten&lt;Map&lt;std::collections::hash_map::IntoIter&lt;bool, Vec&lt;HashSet&lt;u8&gt;&gt;&gt;, {closure@$DIR/multiline-removal-suggestion.rs:29:8: 29:23}&gt;&gt;: Iterator`</tspan>
 </tspan>
-    <tspan x="10px" y="2242px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan>             }).flatten()</tspan>
+    <tspan x="10px" y="2242px">
 </tspan>
-    <tspan x="10px" y="2260px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan>                </tspan><tspan class="fg-ansi256-009 bold">^^^^^^^</tspan><tspan> </tspan><tspan class="fg-ansi256-009 bold">`(bool, HashSet&lt;u8&gt;)` is not an iterator</tspan>
+    <tspan x="10px" y="2260px"><tspan class="fg-ansi256-009 bold">error[E0277]</tspan><tspan class="bold">: `(bool, HashSet&lt;u8&gt;)` is not an iterator</tspan>
 </tspan>
-    <tspan x="10px" y="2278px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">|</tspan>
+    <tspan x="10px" y="2278px"><tspan>  </tspan><tspan class="fg-ansi256-012 bold">--&gt; </tspan><tspan>$DIR/multiline-removal-suggestion.rs:43:7</tspan>
 </tspan>
-    <tspan x="10px" y="2296px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">= </tspan><tspan class="bold">help</tspan><tspan>: the trait `Iterator` is not implemented for `(bool, HashSet&lt;u8&gt;)`</tspan>
+    <tspan x="10px" y="2296px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">|</tspan>
 </tspan>
-    <tspan x="10px" y="2314px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">= </tspan><tspan class="bold">note</tspan><tspan>: required for `(bool, HashSet&lt;u8&gt;)` to implement `IntoIterator`</tspan>
+    <tspan x="10px" y="2314px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan>             }).flatten()</tspan>
 </tspan>
-    <tspan x="10px" y="2332px"><tspan class="fg-ansi256-010 bold">note</tspan><tspan>: required by a bound in `flatten`</tspan>
+    <tspan x="10px" y="2332px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan>                </tspan><tspan class="fg-ansi256-009 bold">^^^^^^^</tspan><tspan> </tspan><tspan class="fg-ansi256-009 bold">`(bool, HashSet&lt;u8&gt;)` is not an iterator</tspan>
 </tspan>
-    <tspan x="10px" y="2350px"><tspan>  </tspan><tspan class="fg-ansi256-012 bold">--&gt; </tspan><tspan>$SRC_DIR/core/src/iter/traits/iterator.rs:LL:COL</tspan>
+    <tspan x="10px" y="2350px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">|</tspan>
 </tspan>
-    <tspan x="10px" y="2368px"><tspan class="fg-ansi256-014 bold">help</tspan><tspan>: consider removing this method call, as the receiver has type `std::vec::IntoIter&lt;HashSet&lt;u8&gt;&gt;` and `std::vec::IntoIter&lt;HashSet&lt;u8&gt;&gt;: Iterator` trivially holds</tspan>
+    <tspan x="10px" y="2368px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">= </tspan><tspan class="bold">help</tspan><tspan>: the trait `Iterator` is not implemented for `(bool, HashSet&lt;u8&gt;)`</tspan>
 </tspan>
-    <tspan x="10px" y="2386px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">|</tspan>
+    <tspan x="10px" y="2386px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">= </tspan><tspan class="bold">note</tspan><tspan>: required for `(bool, HashSet&lt;u8&gt;)` to implement `IntoIterator`</tspan>
 </tspan>
-    <tspan x="10px" y="2404px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-009">- </tspan><tspan>            ts.into_iter()</tspan><tspan class="fg-ansi256-009">.map(|t| {</tspan>
+    <tspan x="10px" y="2404px"><tspan class="fg-ansi256-010 bold">note</tspan><tspan>: required by a bound in `flatten`</tspan>
 </tspan>
-    <tspan x="10px" y="2422px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-009">-                 (is_true, t)</tspan>
+    <tspan x="10px" y="2422px"><tspan>  </tspan><tspan class="fg-ansi256-012 bold">--&gt; </tspan><tspan>$SRC_DIR/core/src/iter/traits/iterator.rs:LL:COL</tspan>
 </tspan>
-    <tspan x="10px" y="2440px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-009">-             })</tspan><tspan>.flatten()</tspan>
+    <tspan x="10px" y="2440px"><tspan class="fg-ansi256-014 bold">help</tspan><tspan>: consider removing this method call, as the receiver has type `std::vec::IntoIter&lt;HashSet&lt;u8&gt;&gt;` and `std::vec::IntoIter&lt;HashSet&lt;u8&gt;&gt;: Iterator` trivially holds</tspan>
 </tspan>
-    <tspan x="10px" y="2458px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-010">+ </tspan><tspan>            ts.into_iter().flatten()</tspan>
+    <tspan x="10px" y="2458px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">|</tspan>
 </tspan>
-    <tspan x="10px" y="2476px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">|</tspan>
+    <tspan x="10px" y="2476px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-009">- </tspan><tspan>            ts.into_iter()</tspan><tspan class="fg-ansi256-009">.map(|t| {</tspan>
 </tspan>
-    <tspan x="10px" y="2494px">
+    <tspan x="10px" y="2494px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-009">-                 (is_true, t)</tspan>
 </tspan>
-    <tspan x="10px" y="2512px"><tspan class="fg-ansi256-009 bold">error[E0277]</tspan><tspan class="bold">: `(bool, HashSet&lt;u8&gt;)` is not an iterator</tspan>
+    <tspan x="10px" y="2512px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-009">-             })</tspan><tspan>.flatten()</tspan>
 </tspan>
-    <tspan x="10px" y="2530px"><tspan>  </tspan><tspan class="fg-ansi256-012 bold">--&gt; </tspan><tspan>$DIR/multiline-removal-suggestion.rs:39:2</tspan>
+    <tspan x="10px" y="2530px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-010">+ </tspan><tspan>            ts.into_iter().flatten()</tspan>
 </tspan>
     <tspan x="10px" y="2548px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">|</tspan>
 </tspan>
-    <tspan x="10px" y="2566px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-009 bold">/</tspan><tspan>     hm.into_iter()</tspan>
+    <tspan x="10px" y="2566px">
 </tspan>
-    <tspan x="10px" y="2584px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-009 bold">|</tspan><tspan>         .map(|(is_true, ts)| {</tspan>
+    <tspan x="10px" y="2584px"><tspan class="fg-ansi256-009 bold">error[E0277]</tspan><tspan class="bold">: `(bool, HashSet&lt;u8&gt;)` is not an iterator</tspan>
 </tspan>
-    <tspan x="10px" y="2602px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-009 bold">|</tspan><tspan>             ts.into_iter().map(|t| {</tspan>
+    <tspan x="10px" y="2602px"><tspan>  </tspan><tspan class="fg-ansi256-012 bold">--&gt; </tspan><tspan>$DIR/multiline-removal-suggestion.rs:39:2</tspan>
 </tspan>
-    <tspan x="10px" y="2620px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-009 bold">|</tspan><tspan>                 (is_true, t)</tspan>
+    <tspan x="10px" y="2620px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">|</tspan>
 </tspan>
-    <tspan x="10px" y="2638px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-009 bold">|</tspan><tspan>             }).flatten()</tspan>
+    <tspan x="10px" y="2638px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan>       hm.into_iter()</tspan>
 </tspan>
-    <tspan x="10px" y="2656px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-009 bold">|</tspan><tspan>         })</tspan>
+    <tspan x="10px" y="2656px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-009 bold"> _____^</tspan>
 </tspan>
-    <tspan x="10px" y="2674px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-009 bold">|__________^</tspan><tspan> </tspan><tspan class="fg-ansi256-009 bold">`(bool, HashSet&lt;u8&gt;)` is not an iterator</tspan>
+    <tspan x="10px" y="2674px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-009 bold">|</tspan><tspan>         .map(|(is_true, ts)| {</tspan>
 </tspan>
-    <tspan x="10px" y="2692px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">|</tspan>
+    <tspan x="10px" y="2692px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-009 bold">|</tspan><tspan>             ts.into_iter().map(|t| {</tspan>
 </tspan>
-    <tspan x="10px" y="2710px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">= </tspan><tspan class="bold">help</tspan><tspan>: the trait `Iterator` is not implemented for `(bool, HashSet&lt;u8&gt;)`</tspan>
+    <tspan x="10px" y="2710px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-009 bold">|</tspan><tspan>                 (is_true, t)</tspan>
 </tspan>
-    <tspan x="10px" y="2728px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">= </tspan><tspan class="bold">note</tspan><tspan>: required for `(bool, HashSet&lt;u8&gt;)` to implement `IntoIterator`</tspan>
+    <tspan x="10px" y="2728px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-009 bold">|</tspan><tspan>             }).flatten()</tspan>
 </tspan>
-    <tspan x="10px" y="2746px"><tspan class="fg-ansi256-010 bold">note</tspan><tspan>: required by a bound in `Flatten`</tspan>
+    <tspan x="10px" y="2746px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-009 bold">|</tspan><tspan>         })</tspan>
 </tspan>
-    <tspan x="10px" y="2764px"><tspan>  </tspan><tspan class="fg-ansi256-012 bold">--&gt; </tspan><tspan>$SRC_DIR/core/src/iter/adapters/flatten.rs:LL:COL</tspan>
+    <tspan x="10px" y="2764px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-009 bold">|__________^</tspan><tspan> </tspan><tspan class="fg-ansi256-009 bold">`(bool, HashSet&lt;u8&gt;)` is not an iterator</tspan>
 </tspan>
-    <tspan x="10px" y="2782px">
+    <tspan x="10px" y="2782px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">|</tspan>
 </tspan>
-    <tspan x="10px" y="2800px"><tspan class="fg-ansi256-009 bold">error[E0599]</tspan><tspan class="bold">: the method `collect` exists for struct `Flatten&lt;Map&lt;IntoIter&lt;bool, Vec&lt;HashSet&lt;u8&gt;&gt;&gt;, {closure@multiline-removal-suggestion.rs:40:8}&gt;&gt;`, but its trait bounds were not satisfied</tspan>
+    <tspan x="10px" y="2800px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">= </tspan><tspan class="bold">help</tspan><tspan>: the trait `Iterator` is not implemented for `(bool, HashSet&lt;u8&gt;)`</tspan>
 </tspan>
-    <tspan x="10px" y="2818px"><tspan>  </tspan><tspan class="fg-ansi256-012 bold">--&gt; </tspan><tspan>$DIR/multiline-removal-suggestion.rs:46:4</tspan>
+    <tspan x="10px" y="2818px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">= </tspan><tspan class="bold">note</tspan><tspan>: required for `(bool, HashSet&lt;u8&gt;)` to implement `IntoIterator`</tspan>
 </tspan>
-    <tspan x="10px" y="2836px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">|</tspan>
+    <tspan x="10px" y="2836px"><tspan class="fg-ansi256-010 bold">note</tspan><tspan>: required by a bound in `Flatten`</tspan>
 </tspan>
-    <tspan x="10px" y="2854px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">/</tspan><tspan>     hm.into_iter()</tspan>
+    <tspan x="10px" y="2854px"><tspan>  </tspan><tspan class="fg-ansi256-012 bold">--&gt; </tspan><tspan>$SRC_DIR/core/src/iter/adapters/flatten.rs:LL:COL</tspan>
 </tspan>
-    <tspan x="10px" y="2872px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan>         .map(|(is_true, ts)| {</tspan>
+    <tspan x="10px" y="2872px">
 </tspan>
-    <tspan x="10px" y="2890px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan>             ts.into_iter().map(|t| {</tspan>
+    <tspan x="10px" y="2890px"><tspan class="fg-ansi256-009 bold">error[E0599]</tspan><tspan class="bold">: the method `collect` exists for struct `Flatten&lt;Map&lt;IntoIter&lt;bool, Vec&lt;HashSet&lt;u8&gt;&gt;&gt;, {closure@multiline-removal-suggestion.rs:40:8}&gt;&gt;`, but its trait bounds were not satisfied</tspan>
 </tspan>
-    <tspan x="10px" y="2908px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan>                 (is_true, t)</tspan>
+    <tspan x="10px" y="2908px"><tspan>  </tspan><tspan class="fg-ansi256-012 bold">--&gt; </tspan><tspan>$DIR/multiline-removal-suggestion.rs:46:4</tspan>
 </tspan>
-    <tspan x="10px" y="2926px"><tspan class="fg-ansi256-012 bold">...</tspan><tspan>  </tspan><tspan class="fg-ansi256-012 bold">|</tspan>
+    <tspan x="10px" y="2926px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">|</tspan>
 </tspan>
-    <tspan x="10px" y="2944px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan>         .flatten()</tspan>
+    <tspan x="10px" y="2944px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan>       hm.into_iter()</tspan>
 </tspan>
-    <tspan x="10px" y="2962px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan>         .collect()</tspan>
+    <tspan x="10px" y="2962px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold"> _____-</tspan>
 </tspan>
-    <tspan x="10px" y="2980px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan>         </tspan><tspan class="fg-ansi256-012 bold">-</tspan><tspan class="fg-ansi256-009 bold">^^^^^^^</tspan><tspan> </tspan><tspan class="fg-ansi256-009 bold">method cannot be called due to unsatisfied trait bounds</tspan>
+    <tspan x="10px" y="2980px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan>         .map(|(is_true, ts)| {</tspan>
 </tspan>
-    <tspan x="10px" y="2998px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|_________|</tspan>
+    <tspan x="10px" y="2998px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan>             ts.into_iter().map(|t| {</tspan>
 </tspan>
-    <tspan x="10px" y="3016px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">|</tspan>
+    <tspan x="10px" y="3016px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan>                 (is_true, t)</tspan>
 </tspan>
-    <tspan x="10px" y="3034px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">|</tspan>
+    <tspan x="10px" y="3034px"><tspan class="fg-ansi256-012 bold">...</tspan><tspan>  </tspan><tspan class="fg-ansi256-012 bold">|</tspan>
 </tspan>
-    <tspan x="10px" y="3052px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">= </tspan><tspan class="bold">note</tspan><tspan>: the following trait bounds were not satisfied:</tspan>
+    <tspan x="10px" y="3052px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan>         .flatten()</tspan>
 </tspan>
-    <tspan x="10px" y="3070px"><tspan>           `&lt;Flatten&lt;Map&lt;std::vec::IntoIter&lt;HashSet&lt;u8&gt;&gt;, {closure@$DIR/multiline-removal-suggestion.rs:41:23: 41:26}&gt;&gt; as IntoIterator&gt;::IntoIter = _`</tspan>
+    <tspan x="10px" y="3070px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan>         .collect()</tspan>
 </tspan>
-    <tspan x="10px" y="3088px"><tspan>           which is required by `Flatten&lt;Map&lt;std::collections::hash_map::IntoIter&lt;bool, Vec&lt;HashSet&lt;u8&gt;&gt;&gt;, {closure@$DIR/multiline-removal-suggestion.rs:40:8: 40:23}&gt;&gt;: Iterator`</tspan>
+    <tspan x="10px" y="3088px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan>         </tspan><tspan class="fg-ansi256-012 bold">-</tspan><tspan class="fg-ansi256-009 bold">^^^^^^^</tspan><tspan> </tspan><tspan class="fg-ansi256-009 bold">method cannot be called due to unsatisfied trait bounds</tspan>
 </tspan>
-    <tspan x="10px" y="3106px"><tspan>           `&lt;Flatten&lt;Map&lt;std::vec::IntoIter&lt;HashSet&lt;u8&gt;&gt;, {closure@$DIR/multiline-removal-suggestion.rs:41:23: 41:26}&gt;&gt; as IntoIterator&gt;::Item = _`</tspan>
+    <tspan x="10px" y="3106px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|_________|</tspan>
 </tspan>
-    <tspan x="10px" y="3124px"><tspan>           which is required by `Flatten&lt;Map&lt;std::collections::hash_map::IntoIter&lt;bool, Vec&lt;HashSet&lt;u8&gt;&gt;&gt;, {closure@$DIR/multiline-removal-suggestion.rs:40:8: 40:23}&gt;&gt;: Iterator`</tspan>
+    <tspan x="10px" y="3124px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">|</tspan>
 </tspan>
-    <tspan x="10px" y="3142px"><tspan>           `Flatten&lt;Map&lt;std::vec::IntoIter&lt;HashSet&lt;u8&gt;&gt;, {closure@$DIR/multiline-removal-suggestion.rs:41:23: 41:26}&gt;&gt;: IntoIterator`</tspan>
+    <tspan x="10px" y="3142px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">|</tspan>
 </tspan>
-    <tspan x="10px" y="3160px"><tspan>           which is required by `Flatten&lt;Map&lt;std::collections::hash_map::IntoIter&lt;bool, Vec&lt;HashSet&lt;u8&gt;&gt;&gt;, {closure@$DIR/multiline-removal-suggestion.rs:40:8: 40:23}&gt;&gt;: Iterator`</tspan>
+    <tspan x="10px" y="3160px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">= </tspan><tspan class="bold">note</tspan><tspan>: the following trait bounds were not satisfied:</tspan>
 </tspan>
-    <tspan x="10px" y="3178px"><tspan>           `Flatten&lt;Map&lt;std::collections::hash_map::IntoIter&lt;bool, Vec&lt;HashSet&lt;u8&gt;&gt;&gt;, {closure@$DIR/multiline-removal-suggestion.rs:40:8: 40:23}&gt;&gt;: Iterator`</tspan>
+    <tspan x="10px" y="3178px"><tspan>           `&lt;Flatten&lt;Map&lt;std::vec::IntoIter&lt;HashSet&lt;u8&gt;&gt;, {closure@$DIR/multiline-removal-suggestion.rs:41:23: 41:26}&gt;&gt; as IntoIterator&gt;::IntoIter = _`</tspan>
 </tspan>
-    <tspan x="10px" y="3196px"><tspan>           which is required by `&amp;mut Flatten&lt;Map&lt;std::collections::hash_map::IntoIter&lt;bool, Vec&lt;HashSet&lt;u8&gt;&gt;&gt;, {closure@$DIR/multiline-removal-suggestion.rs:40:8: 40:23}&gt;&gt;: Iterator`</tspan>
+    <tspan x="10px" y="3196px"><tspan>           which is required by `Flatten&lt;Map&lt;std::collections::hash_map::IntoIter&lt;bool, Vec&lt;HashSet&lt;u8&gt;&gt;&gt;, {closure@$DIR/multiline-removal-suggestion.rs:40:8: 40:23}&gt;&gt;: Iterator`</tspan>
 </tspan>
-    <tspan x="10px" y="3214px">
+    <tspan x="10px" y="3214px"><tspan>           `&lt;Flatten&lt;Map&lt;std::vec::IntoIter&lt;HashSet&lt;u8&gt;&gt;, {closure@$DIR/multiline-removal-suggestion.rs:41:23: 41:26}&gt;&gt; as IntoIterator&gt;::Item = _`</tspan>
 </tspan>
-    <tspan x="10px" y="3232px"><tspan class="fg-ansi256-009 bold">error[E0277]</tspan><tspan class="bold">: `(bool, HashSet&lt;u8&gt;)` is not an iterator</tspan>
+    <tspan x="10px" y="3232px"><tspan>           which is required by `Flatten&lt;Map&lt;std::collections::hash_map::IntoIter&lt;bool, Vec&lt;HashSet&lt;u8&gt;&gt;&gt;, {closure@$DIR/multiline-removal-suggestion.rs:40:8: 40:23}&gt;&gt;: Iterator`</tspan>
 </tspan>
-    <tspan x="10px" y="3250px"><tspan>  </tspan><tspan class="fg-ansi256-012 bold">--&gt; </tspan><tspan>$DIR/multiline-removal-suggestion.rs:53:28</tspan>
+    <tspan x="10px" y="3250px"><tspan>           `Flatten&lt;Map&lt;std::vec::IntoIter&lt;HashSet&lt;u8&gt;&gt;, {closure@$DIR/multiline-removal-suggestion.rs:41:23: 41:26}&gt;&gt;: IntoIterator`</tspan>
 </tspan>
-    <tspan x="10px" y="3268px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">|</tspan>
+    <tspan x="10px" y="3268px"><tspan>           which is required by `Flatten&lt;Map&lt;std::collections::hash_map::IntoIter&lt;bool, Vec&lt;HashSet&lt;u8&gt;&gt;&gt;, {closure@$DIR/multiline-removal-suggestion.rs:40:8: 40:23}&gt;&gt;: Iterator`</tspan>
 </tspan>
-    <tspan x="10px" y="3286px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan>                 .map(|t| (is_true, t)).flatten()</tspan>
+    <tspan x="10px" y="3286px"><tspan>           `Flatten&lt;Map&lt;std::collections::hash_map::IntoIter&lt;bool, Vec&lt;HashSet&lt;u8&gt;&gt;&gt;, {closure@$DIR/multiline-removal-suggestion.rs:40:8: 40:23}&gt;&gt;: Iterator`</tspan>
 </tspan>
-    <tspan x="10px" y="3304px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan>                                        </tspan><tspan class="fg-ansi256-009 bold">^^^^^^^</tspan><tspan> </tspan><tspan class="fg-ansi256-009 bold">`(bool, HashSet&lt;u8&gt;)` is not an iterator</tspan>
+    <tspan x="10px" y="3304px"><tspan>           which is required by `&amp;mut Flatten&lt;Map&lt;std::collections::hash_map::IntoIter&lt;bool, Vec&lt;HashSet&lt;u8&gt;&gt;&gt;, {closure@$DIR/multiline-removal-suggestion.rs:40:8: 40:23}&gt;&gt;: Iterator`</tspan>
 </tspan>
-    <tspan x="10px" y="3322px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">|</tspan>
+    <tspan x="10px" y="3322px">
 </tspan>
-    <tspan x="10px" y="3340px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">= </tspan><tspan class="bold">help</tspan><tspan>: the trait `Iterator` is not implemented for `(bool, HashSet&lt;u8&gt;)`</tspan>
+    <tspan x="10px" y="3340px"><tspan class="fg-ansi256-009 bold">error[E0277]</tspan><tspan class="bold">: `(bool, HashSet&lt;u8&gt;)` is not an iterator</tspan>
 </tspan>
-    <tspan x="10px" y="3358px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">= </tspan><tspan class="bold">note</tspan><tspan>: required for `(bool, HashSet&lt;u8&gt;)` to implement `IntoIterator`</tspan>
+    <tspan x="10px" y="3358px"><tspan>  </tspan><tspan class="fg-ansi256-012 bold">--&gt; </tspan><tspan>$DIR/multiline-removal-suggestion.rs:53:28</tspan>
 </tspan>
-    <tspan x="10px" y="3376px"><tspan class="fg-ansi256-010 bold">note</tspan><tspan>: required by a bound in `flatten`</tspan>
+    <tspan x="10px" y="3376px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">|</tspan>
 </tspan>
-    <tspan x="10px" y="3394px"><tspan>  </tspan><tspan class="fg-ansi256-012 bold">--&gt; </tspan><tspan>$SRC_DIR/core/src/iter/traits/iterator.rs:LL:COL</tspan>
+    <tspan x="10px" y="3394px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan>                 .map(|t| (is_true, t)).flatten()</tspan>
 </tspan>
-    <tspan x="10px" y="3412px"><tspan class="fg-ansi256-014 bold">help</tspan><tspan>: consider removing this method call, as the receiver has type `std::vec::IntoIter&lt;HashSet&lt;u8&gt;&gt;` and `std::vec::IntoIter&lt;HashSet&lt;u8&gt;&gt;: Iterator` trivially holds</tspan>
+    <tspan x="10px" y="3412px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan>                                        </tspan><tspan class="fg-ansi256-009 bold">^^^^^^^</tspan><tspan> </tspan><tspan class="fg-ansi256-009 bold">`(bool, HashSet&lt;u8&gt;)` is not an iterator</tspan>
 </tspan>
     <tspan x="10px" y="3430px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">|</tspan>
 </tspan>
-    <tspan x="10px" y="3448px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-009">- </tspan><tspan>            ts.into_iter()</tspan>
+    <tspan x="10px" y="3448px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">= </tspan><tspan class="bold">help</tspan><tspan>: the trait `Iterator` is not implemented for `(bool, HashSet&lt;u8&gt;)`</tspan>
 </tspan>
-    <tspan x="10px" y="3466px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-009">-                 .map(|t| (is_true, t))</tspan><tspan>.flatten()</tspan>
+    <tspan x="10px" y="3466px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">= </tspan><tspan class="bold">note</tspan><tspan>: required for `(bool, HashSet&lt;u8&gt;)` to implement `IntoIterator`</tspan>
 </tspan>
-    <tspan x="10px" y="3484px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-010">+ </tspan><tspan>            ts.into_iter().flatten()</tspan>
+    <tspan x="10px" y="3484px"><tspan class="fg-ansi256-010 bold">note</tspan><tspan>: required by a bound in `flatten`</tspan>
 </tspan>
-    <tspan x="10px" y="3502px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">|</tspan>
+    <tspan x="10px" y="3502px"><tspan>  </tspan><tspan class="fg-ansi256-012 bold">--&gt; </tspan><tspan>$SRC_DIR/core/src/iter/traits/iterator.rs:LL:COL</tspan>
 </tspan>
-    <tspan x="10px" y="3520px">
+    <tspan x="10px" y="3520px"><tspan class="fg-ansi256-014 bold">help</tspan><tspan>: consider removing this method call, as the receiver has type `std::vec::IntoIter&lt;HashSet&lt;u8&gt;&gt;` and `std::vec::IntoIter&lt;HashSet&lt;u8&gt;&gt;: Iterator` trivially holds</tspan>
 </tspan>
-    <tspan x="10px" y="3538px"><tspan class="fg-ansi256-009 bold">error[E0277]</tspan><tspan class="bold">: `(bool, HashSet&lt;u8&gt;)` is not an iterator</tspan>
+    <tspan x="10px" y="3538px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">|</tspan>
 </tspan>
-    <tspan x="10px" y="3556px"><tspan>  </tspan><tspan class="fg-ansi256-012 bold">--&gt; </tspan><tspan>$DIR/multiline-removal-suggestion.rs:50:2</tspan>
+    <tspan x="10px" y="3556px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-009">- </tspan><tspan>            ts.into_iter()</tspan>
 </tspan>
-    <tspan x="10px" y="3574px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">|</tspan>
+    <tspan x="10px" y="3574px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-009">-                 .map(|t| (is_true, t))</tspan><tspan>.flatten()</tspan>
 </tspan>
-    <tspan x="10px" y="3592px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-009 bold">/</tspan><tspan>     hm.into_iter()</tspan>
+    <tspan x="10px" y="3592px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-010">+ </tspan><tspan>            ts.into_iter().flatten()</tspan>
 </tspan>
-    <tspan x="10px" y="3610px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-009 bold">|</tspan><tspan>         .map(|(is_true, ts)| {</tspan>
+    <tspan x="10px" y="3610px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">|</tspan>
 </tspan>
-    <tspan x="10px" y="3628px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-009 bold">|</tspan><tspan>             ts.into_iter()</tspan>
+    <tspan x="10px" y="3628px">
 </tspan>
-    <tspan x="10px" y="3646px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-009 bold">|</tspan><tspan>                 .map(|t| (is_true, t)).flatten()</tspan>
+    <tspan x="10px" y="3646px"><tspan class="fg-ansi256-009 bold">error[E0277]</tspan><tspan class="bold">: `(bool, HashSet&lt;u8&gt;)` is not an iterator</tspan>
 </tspan>
-    <tspan x="10px" y="3664px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-009 bold">|</tspan><tspan>         })</tspan>
+    <tspan x="10px" y="3664px"><tspan>  </tspan><tspan class="fg-ansi256-012 bold">--&gt; </tspan><tspan>$DIR/multiline-removal-suggestion.rs:50:2</tspan>
 </tspan>
-    <tspan x="10px" y="3682px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-009 bold">|__________^</tspan><tspan> </tspan><tspan class="fg-ansi256-009 bold">`(bool, HashSet&lt;u8&gt;)` is not an iterator</tspan>
+    <tspan x="10px" y="3682px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">|</tspan>
 </tspan>
-    <tspan x="10px" y="3700px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">|</tspan>
+    <tspan x="10px" y="3700px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan>       hm.into_iter()</tspan>
 </tspan>
-    <tspan x="10px" y="3718px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">= </tspan><tspan class="bold">help</tspan><tspan>: the trait `Iterator` is not implemented for `(bool, HashSet&lt;u8&gt;)`</tspan>
+    <tspan x="10px" y="3718px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-009 bold"> _____^</tspan>
 </tspan>
-    <tspan x="10px" y="3736px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">= </tspan><tspan class="bold">note</tspan><tspan>: required for `(bool, HashSet&lt;u8&gt;)` to implement `IntoIterator`</tspan>
+    <tspan x="10px" y="3736px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-009 bold">|</tspan><tspan>         .map(|(is_true, ts)| {</tspan>
 </tspan>
-    <tspan x="10px" y="3754px"><tspan class="fg-ansi256-010 bold">note</tspan><tspan>: required by a bound in `Flatten`</tspan>
+    <tspan x="10px" y="3754px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-009 bold">|</tspan><tspan>             ts.into_iter()</tspan>
 </tspan>
-    <tspan x="10px" y="3772px"><tspan>  </tspan><tspan class="fg-ansi256-012 bold">--&gt; </tspan><tspan>$SRC_DIR/core/src/iter/adapters/flatten.rs:LL:COL</tspan>
+    <tspan x="10px" y="3772px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-009 bold">|</tspan><tspan>                 .map(|t| (is_true, t)).flatten()</tspan>
 </tspan>
-    <tspan x="10px" y="3790px">
+    <tspan x="10px" y="3790px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-009 bold">|</tspan><tspan>         })</tspan>
 </tspan>
-    <tspan x="10px" y="3808px"><tspan class="fg-ansi256-009 bold">error[E0599]</tspan><tspan class="bold">: the method `collect` exists for struct `Flatten&lt;Map&lt;IntoIter&lt;bool, Vec&lt;HashSet&lt;u8&gt;&gt;&gt;, {closure@multiline-removal-suggestion.rs:51:8}&gt;&gt;`, but its trait bounds were not satisfied</tspan>
+    <tspan x="10px" y="3808px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-009 bold">|__________^</tspan><tspan> </tspan><tspan class="fg-ansi256-009 bold">`(bool, HashSet&lt;u8&gt;)` is not an iterator</tspan>
 </tspan>
-    <tspan x="10px" y="3826px"><tspan>  </tspan><tspan class="fg-ansi256-012 bold">--&gt; </tspan><tspan>$DIR/multiline-removal-suggestion.rs:56:4</tspan>
+    <tspan x="10px" y="3826px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">|</tspan>
 </tspan>
-    <tspan x="10px" y="3844px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">|</tspan>
+    <tspan x="10px" y="3844px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">= </tspan><tspan class="bold">help</tspan><tspan>: the trait `Iterator` is not implemented for `(bool, HashSet&lt;u8&gt;)`</tspan>
 </tspan>
-    <tspan x="10px" y="3862px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">/</tspan><tspan>     hm.into_iter()</tspan>
+    <tspan x="10px" y="3862px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">= </tspan><tspan class="bold">note</tspan><tspan>: required for `(bool, HashSet&lt;u8&gt;)` to implement `IntoIterator`</tspan>
 </tspan>
-    <tspan x="10px" y="3880px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan>         .map(|(is_true, ts)| {</tspan>
+    <tspan x="10px" y="3880px"><tspan class="fg-ansi256-010 bold">note</tspan><tspan>: required by a bound in `Flatten`</tspan>
 </tspan>
-    <tspan x="10px" y="3898px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan>             ts.into_iter()</tspan>
+    <tspan x="10px" y="3898px"><tspan>  </tspan><tspan class="fg-ansi256-012 bold">--&gt; </tspan><tspan>$SRC_DIR/core/src/iter/adapters/flatten.rs:LL:COL</tspan>
 </tspan>
-    <tspan x="10px" y="3916px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan>                 .map(|t| (is_true, t)).flatten()</tspan>
+    <tspan x="10px" y="3916px">
 </tspan>
-    <tspan x="10px" y="3934px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan>         })</tspan>
+    <tspan x="10px" y="3934px"><tspan class="fg-ansi256-009 bold">error[E0599]</tspan><tspan class="bold">: the method `collect` exists for struct `Flatten&lt;Map&lt;IntoIter&lt;bool, Vec&lt;HashSet&lt;u8&gt;&gt;&gt;, {closure@multiline-removal-suggestion.rs:51:8}&gt;&gt;`, but its trait bounds were not satisfied</tspan>
 </tspan>
-    <tspan x="10px" y="3952px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan>         .flatten()</tspan>
+    <tspan x="10px" y="3952px"><tspan>  </tspan><tspan class="fg-ansi256-012 bold">--&gt; </tspan><tspan>$DIR/multiline-removal-suggestion.rs:56:4</tspan>
 </tspan>
-    <tspan x="10px" y="3970px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan>         .collect()</tspan>
+    <tspan x="10px" y="3970px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">|</tspan>
 </tspan>
-    <tspan x="10px" y="3988px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan>         </tspan><tspan class="fg-ansi256-012 bold">-</tspan><tspan class="fg-ansi256-009 bold">^^^^^^^</tspan><tspan> </tspan><tspan class="fg-ansi256-009 bold">method cannot be called due to unsatisfied trait bounds</tspan>
+    <tspan x="10px" y="3988px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan>       hm.into_iter()</tspan>
 </tspan>
-    <tspan x="10px" y="4006px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|_________|</tspan>
+    <tspan x="10px" y="4006px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold"> _____-</tspan>
 </tspan>
-    <tspan x="10px" y="4024px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">|</tspan>
+    <tspan x="10px" y="4024px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan>         .map(|(is_true, ts)| {</tspan>
 </tspan>
-    <tspan x="10px" y="4042px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">|</tspan>
+    <tspan x="10px" y="4042px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan>             ts.into_iter()</tspan>
 </tspan>
-    <tspan x="10px" y="4060px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">= </tspan><tspan class="bold">note</tspan><tspan>: the following trait bounds were not satisfied:</tspan>
+    <tspan x="10px" y="4060px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan>                 .map(|t| (is_true, t)).flatten()</tspan>
 </tspan>
-    <tspan x="10px" y="4078px"><tspan>           `&lt;Flatten&lt;Map&lt;std::vec::IntoIter&lt;HashSet&lt;u8&gt;&gt;, {closure@$DIR/multiline-removal-suggestion.rs:53:10: 53:13}&gt;&gt; as IntoIterator&gt;::IntoIter = _`</tspan>
+    <tspan x="10px" y="4078px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan>         })</tspan>
 </tspan>
-    <tspan x="10px" y="4096px"><tspan>           which is required by `Flatten&lt;Map&lt;std::collections::hash_map::IntoIter&lt;bool, Vec&lt;HashSet&lt;u8&gt;&gt;&gt;, {closure@$DIR/multiline-removal-suggestion.rs:51:8: 51:23}&gt;&gt;: Iterator`</tspan>
+    <tspan x="10px" y="4096px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan>         .flatten()</tspan>
 </tspan>
-    <tspan x="10px" y="4114px"><tspan>           `&lt;Flatten&lt;Map&lt;std::vec::IntoIter&lt;HashSet&lt;u8&gt;&gt;, {closure@$DIR/multiline-removal-suggestion.rs:53:10: 53:13}&gt;&gt; as IntoIterator&gt;::Item = _`</tspan>
+    <tspan x="10px" y="4114px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan>         .collect()</tspan>
 </tspan>
-    <tspan x="10px" y="4132px"><tspan>           which is required by `Flatten&lt;Map&lt;std::collections::hash_map::IntoIter&lt;bool, Vec&lt;HashSet&lt;u8&gt;&gt;&gt;, {closure@$DIR/multiline-removal-suggestion.rs:51:8: 51:23}&gt;&gt;: Iterator`</tspan>
+    <tspan x="10px" y="4132px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan>         </tspan><tspan class="fg-ansi256-012 bold">-</tspan><tspan class="fg-ansi256-009 bold">^^^^^^^</tspan><tspan> </tspan><tspan class="fg-ansi256-009 bold">method cannot be called due to unsatisfied trait bounds</tspan>
 </tspan>
-    <tspan x="10px" y="4150px"><tspan>           `Flatten&lt;Map&lt;std::vec::IntoIter&lt;HashSet&lt;u8&gt;&gt;, {closure@$DIR/multiline-removal-suggestion.rs:53:10: 53:13}&gt;&gt;: IntoIterator`</tspan>
+    <tspan x="10px" y="4150px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|_________|</tspan>
 </tspan>
-    <tspan x="10px" y="4168px"><tspan>           which is required by `Flatten&lt;Map&lt;std::collections::hash_map::IntoIter&lt;bool, Vec&lt;HashSet&lt;u8&gt;&gt;&gt;, {closure@$DIR/multiline-removal-suggestion.rs:51:8: 51:23}&gt;&gt;: Iterator`</tspan>
+    <tspan x="10px" y="4168px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">|</tspan>
 </tspan>
-    <tspan x="10px" y="4186px"><tspan>           `Flatten&lt;Map&lt;std::collections::hash_map::IntoIter&lt;bool, Vec&lt;HashSet&lt;u8&gt;&gt;&gt;, {closure@$DIR/multiline-removal-suggestion.rs:51:8: 51:23}&gt;&gt;: Iterator`</tspan>
+    <tspan x="10px" y="4186px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">|</tspan>
 </tspan>
-    <tspan x="10px" y="4204px"><tspan>           which is required by `&amp;mut Flatten&lt;Map&lt;std::collections::hash_map::IntoIter&lt;bool, Vec&lt;HashSet&lt;u8&gt;&gt;&gt;, {closure@$DIR/multiline-removal-suggestion.rs:51:8: 51:23}&gt;&gt;: Iterator`</tspan>
+    <tspan x="10px" y="4204px"><tspan>   </tspan><tspan class="fg-ansi256-012 bold">= </tspan><tspan class="bold">note</tspan><tspan>: the following trait bounds were not satisfied:</tspan>
 </tspan>
-    <tspan x="10px" y="4222px">
+    <tspan x="10px" y="4222px"><tspan>           `&lt;Flatten&lt;Map&lt;std::vec::IntoIter&lt;HashSet&lt;u8&gt;&gt;, {closure@$DIR/multiline-removal-suggestion.rs:53:10: 53:13}&gt;&gt; as IntoIterator&gt;::IntoIter = _`</tspan>
 </tspan>
-    <tspan x="10px" y="4240px"><tspan class="fg-ansi256-009 bold">error</tspan><tspan class="bold">: aborting due to 12 previous errors</tspan>
+    <tspan x="10px" y="4240px"><tspan>           which is required by `Flatten&lt;Map&lt;std::collections::hash_map::IntoIter&lt;bool, Vec&lt;HashSet&lt;u8&gt;&gt;&gt;, {closure@$DIR/multiline-removal-suggestion.rs:51:8: 51:23}&gt;&gt;: Iterator`</tspan>
 </tspan>
-    <tspan x="10px" y="4258px">
+    <tspan x="10px" y="4258px"><tspan>           `&lt;Flatten&lt;Map&lt;std::vec::IntoIter&lt;HashSet&lt;u8&gt;&gt;, {closure@$DIR/multiline-removal-suggestion.rs:53:10: 53:13}&gt;&gt; as IntoIterator&gt;::Item = _`</tspan>
 </tspan>
-    <tspan x="10px" y="4276px"><tspan class="bold">Some errors have detailed explanations: E0277, E0599.</tspan>
+    <tspan x="10px" y="4276px"><tspan>           which is required by `Flatten&lt;Map&lt;std::collections::hash_map::IntoIter&lt;bool, Vec&lt;HashSet&lt;u8&gt;&gt;&gt;, {closure@$DIR/multiline-removal-suggestion.rs:51:8: 51:23}&gt;&gt;: Iterator`</tspan>
 </tspan>
-    <tspan x="10px" y="4294px"><tspan class="bold">For more information about an error, try `rustc --explain E0277`.</tspan>
+    <tspan x="10px" y="4294px"><tspan>           `Flatten&lt;Map&lt;std::vec::IntoIter&lt;HashSet&lt;u8&gt;&gt;, {closure@$DIR/multiline-removal-suggestion.rs:53:10: 53:13}&gt;&gt;: IntoIterator`</tspan>
 </tspan>
-    <tspan x="10px" y="4312px">
+    <tspan x="10px" y="4312px"><tspan>           which is required by `Flatten&lt;Map&lt;std::collections::hash_map::IntoIter&lt;bool, Vec&lt;HashSet&lt;u8&gt;&gt;&gt;, {closure@$DIR/multiline-removal-suggestion.rs:51:8: 51:23}&gt;&gt;: Iterator`</tspan>
+</tspan>
+    <tspan x="10px" y="4330px"><tspan>           `Flatten&lt;Map&lt;std::collections::hash_map::IntoIter&lt;bool, Vec&lt;HashSet&lt;u8&gt;&gt;&gt;, {closure@$DIR/multiline-removal-suggestion.rs:51:8: 51:23}&gt;&gt;: Iterator`</tspan>
+</tspan>
+    <tspan x="10px" y="4348px"><tspan>           which is required by `&amp;mut Flatten&lt;Map&lt;std::collections::hash_map::IntoIter&lt;bool, Vec&lt;HashSet&lt;u8&gt;&gt;&gt;, {closure@$DIR/multiline-removal-suggestion.rs:51:8: 51:23}&gt;&gt;: Iterator`</tspan>
+</tspan>
+    <tspan x="10px" y="4366px">
+</tspan>
+    <tspan x="10px" y="4384px"><tspan class="fg-ansi256-009 bold">error</tspan><tspan class="bold">: aborting due to 12 previous errors</tspan>
+</tspan>
+    <tspan x="10px" y="4402px">
+</tspan>
+    <tspan x="10px" y="4420px"><tspan class="bold">Some errors have detailed explanations: E0277, E0599.</tspan>
+</tspan>
+    <tspan x="10px" y="4438px"><tspan class="bold">For more information about an error, try `rustc --explain E0277`.</tspan>
+</tspan>
+    <tspan x="10px" y="4456px">
 </tspan>
   </text>
 
diff --git a/tests/ui/issues/issue-44078.stderr b/tests/ui/issues/issue-44078.stderr
index 41106b29aad..3e12de34e11 100644
--- a/tests/ui/issues/issue-44078.stderr
+++ b/tests/ui/issues/issue-44078.stderr
@@ -4,7 +4,7 @@ error[E0765]: unterminated double quote string
 LL |       "😊"";
    |  _________^
 LL | | }
-   | |_^
+   | |__^
 
 error: aborting due to 1 previous error
 
diff --git a/tests/ui/lexer/unterminated-nested-comment.stderr b/tests/ui/lexer/unterminated-nested-comment.stderr
index 78b72ce1fe4..9117b689c94 100644
--- a/tests/ui/lexer/unterminated-nested-comment.stderr
+++ b/tests/ui/lexer/unterminated-nested-comment.stderr
@@ -12,7 +12,7 @@ LL | | /*
    | | |
    | | ...as last nested comment starts here, maybe you want to close this instead?
 LL | | */
-   | |_-^
+   | |_--^
    |   |
    |   ...and last nested comment terminates here.
 
diff --git a/tests/ui/macros/not-utf8.stderr b/tests/ui/macros/not-utf8.stderr
index 17ee8197ac8..be028816e0f 100644
--- a/tests/ui/macros/not-utf8.stderr
+++ b/tests/ui/macros/not-utf8.stderr
@@ -7,7 +7,7 @@ LL |     include!("not-utf8.bin");
 note: byte `193` is not valid utf-8
   --> $DIR/not-utf8.bin:1:1
    |
-LL | �|�␂!5�cc␕␂�Ӻi��WWj�ȥ�'�}�␒�J�ȉ��W�␞O�@����␜w�V���LO����␔[ ␃_�'���SQ�~ذ��ų&��-    ��lN~��!@␌ _#���kQ��h�␝�:�...
+LL | �|�␂!5�cc␕␂�Ӻi��WWj�ȥ�'�}�␒�J�ȉ��W�␞O�@����␜w�V���LO����␔[ ␃_�'���SQ�~ذ��ų&��-    ��lN~��!@␌ _#���kQ��h�␝�:�␜␇�
    | ^
    = note: this error originates in the macro `include` (in Nightly builds, run with -Z macro-backtrace for more info)
 
diff --git a/tests/ui/macros/same-sequence-span.stderr b/tests/ui/macros/same-sequence-span.stderr
index ff32ef94386..34df201f5a5 100644
--- a/tests/ui/macros/same-sequence-span.stderr
+++ b/tests/ui/macros/same-sequence-span.stderr
@@ -18,7 +18,7 @@ error: `$x:expr` may be followed by `$y:tt`, which is not allowed for `expr` fra
   --> $DIR/same-sequence-span.rs:19:1
    |
 LL | | macro_rules! manual_foo {
-   | |_________________________________^ not allowed after `expr` fragments
+   | |__________________________^not allowed after `expr` fragments
 ...
 LL |   proc_macro_sequence::make_foo!();
    |   ^-------------------------------
diff --git a/tests/ui/parser/byte-string-literals.stderr b/tests/ui/parser/byte-string-literals.stderr
index 08633742557..3e589258d41 100644
--- a/tests/ui/parser/byte-string-literals.stderr
+++ b/tests/ui/parser/byte-string-literals.stderr
@@ -44,7 +44,7 @@ error[E0766]: unterminated double quote byte string
 LL |       b"a
    |  ______^
 LL | | }
-   | |_^
+   | |__^
 
 error: aborting due to 6 previous errors
 
diff --git a/tests/ui/parser/raw/too-many-hash.stderr b/tests/ui/parser/raw/too-many-hash.stderr
index 61fcbcee159..0be85872008 100644
--- a/tests/ui/parser/raw/too-many-hash.stderr
+++ b/tests/ui/parser/raw/too-many-hash.stderr
@@ -1,7 +1,7 @@
 error: too many `#` symbols: raw strings may be delimited by up to 255 `#` symbols, but found 256
   --> $DIR/too-many-hash.rs:4:19
    |
-LL | ... = r############################################################################...#############################################################...
+LL | ... = r############################################################################...###############################################################;
    |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^...^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 error: aborting due to 1 previous error
diff --git a/tests/ui/parser/unbalanced-doublequote.stderr b/tests/ui/parser/unbalanced-doublequote.stderr
index 9fdad87a86c..d40b982da7c 100644
--- a/tests/ui/parser/unbalanced-doublequote.stderr
+++ b/tests/ui/parser/unbalanced-doublequote.stderr
@@ -3,7 +3,7 @@ error[E0765]: unterminated double quote string
    |
 LL | /     "
 LL | | }
-   | |_^
+   | |__^
 
 error: aborting due to 1 previous error
 
diff --git a/tests/ui/rust-2024/reserved-guarded-strings.stderr b/tests/ui/rust-2024/reserved-guarded-strings.stderr
index 5c0f5064546..1af069b8a11 100644
--- a/tests/ui/rust-2024/reserved-guarded-strings.stderr
+++ b/tests/ui/rust-2024/reserved-guarded-strings.stderr
@@ -241,7 +241,7 @@ LL |     demo2!(#"foo"## #);
 error: invalid string literal
   --> $DIR/reserved-guarded-strings.rs:71:12
    |
-LL | ...n!(######################################################################...#################################################################"foo...
+LL | ...n!(######################################################################...#################################################################"foo");
    |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^...^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
    = note: unprefixed guarded string literals are reserved for future use since Rust 2024