Auto merge of #106472 - matthiaskrgr:rollup-4w4v50e, r=matthiaskrgr

Rollup of 7 pull requests

Successful merges:

 - #106391 (rustdoc: allow popover child links to work)
 - #106398 (Fix a few clippy lints in libtest)
 - #106412 (Fix link generation for local primitive types in rustdoc JSON output)
 - #106437 (rustdoc: fix buggy JS check for absolute URL)
 - #106451 (Merge borrowck permission checks)
 - #106460 (Move tests)
 - #106461 (docs: fix broken link "search bar")

Failed merges:

r? `@ghost`
`@rustbot` modify labels: rollup

52 files changed, 150 insertions, 104 deletions

diff --git a/compiler/rustc_borrowck/src/lib.rs b/compiler/rustc_borrowck/src/lib.rs
index ae1bea008b6..278ffed0747 100644
--- a/compiler/rustc_borrowck/src/lib.rs
+++ b/compiler/rustc_borrowck/src/lib.rs
@@ -863,7 +863,6 @@ enum WriteKind {
 /// local place can be mutated.
 //
 // FIXME: @nikomatsakis suggested that this flag could be removed with the following modifications:
-// - Merge `check_access_permissions()` and `check_if_reassignment_to_immutable_state()`.
 // - Split `is_mutable()` into `is_assignable()` (can be directly assigned) and
 //   `is_declared_mutable()`.
 // - Take flow state into consideration in `is_assignable()` for local variables.
@@ -1132,20 +1131,6 @@ impl<'cx, 'tcx> MirBorrowckCtxt<'cx, 'tcx> {
         // Write of P[i] or *P requires P init'd.
         self.check_if_assigned_path_is_moved(location, place_span, flow_state);
 
-        // Special case: you can assign an immutable local variable
-        // (e.g., `x = ...`) so long as it has never been initialized
-        // before (at this point in the flow).
-        if let Some(local) = place_span.0.as_local() {
-            if let Mutability::Not = self.body.local_decls[local].mutability {
-                // check for reassignments to immutable local variables
-                self.check_if_reassignment_to_immutable_state(
-                    location, local, place_span, flow_state,
-                );
-                return;
-            }
-        }
-
-        // Otherwise, use the normal access permission rules.
         self.access_place(
             location,
             place_span,
@@ -1554,24 +1539,6 @@ impl<'cx, 'tcx> MirBorrowckCtxt<'cx, 'tcx> {
         }
     }
 
-    fn check_if_reassignment_to_immutable_state(
-        &mut self,
-        location: Location,
-        local: Local,
-        place_span: (Place<'tcx>, Span),
-        flow_state: &Flows<'cx, 'tcx>,
-    ) {
-        debug!("check_if_reassignment_to_immutable_state({:?})", local);
-
-        // Check if any of the initializations of `local` have happened yet:
-        if let Some(init_index) = self.is_local_ever_initialized(local, flow_state) {
-            // And, if so, report an error.
-            let init = &self.move_data.inits[init_index];
-            let span = init.span(&self.body);
-            self.report_illegal_reassignment(location, place_span, span, place_span.0);
-        }
-    }
-
     fn check_if_full_path_is_moved(
         &mut self,
         location: Location,
@@ -2037,12 +2004,19 @@ impl<'cx, 'tcx> MirBorrowckCtxt<'cx, 'tcx> {
         // partial initialization, do not complain about mutability
         // errors except for actual mutation (as opposed to an attempt
         // to do a partial initialization).
-        let previously_initialized =
-            self.is_local_ever_initialized(place.local, flow_state).is_some();
+        let previously_initialized = self.is_local_ever_initialized(place.local, flow_state);
 
         // at this point, we have set up the error reporting state.
-        if previously_initialized {
-            self.report_mutability_error(place, span, the_place_err, error_access, location);
+        if let Some(init_index) = previously_initialized {
+            if let (AccessKind::Mutate, Some(_)) = (error_access, place.as_local()) {
+                // If this is a mutate access to an immutable local variable with no projections
+                // report the error as an illegal reassignment
+                let init = &self.move_data.inits[init_index];
+                let assigned_span = init.span(&self.body);
+                self.report_illegal_reassignment(location, (place, span), assigned_span, place);
+            } else {
+                self.report_mutability_error(place, span, the_place_err, error_access, location)
+            }
             true
         } else {
             false
diff --git a/library/std/src/lib.rs b/library/std/src/lib.rs
index 13dfd41abbf..6575cc71b05 100644
--- a/library/std/src/lib.rs
+++ b/library/std/src/lib.rs
@@ -14,7 +14,7 @@
 //! # How to read this documentation
 //!
 //! If you already know the name of what you are looking for, the fastest way to
-//! find it is to use the <a href="#" onclick="focusSearchBar();">search
+//! find it is to use the <a href="#" onclick="window.searchState.focus();">search
 //! bar</a> at the top of the page.
 //!
 //! Otherwise, you may want to jump to one of these useful sections:
diff --git a/library/test/src/console.rs b/library/test/src/console.rs
index a3c39f71f08..24cbe035f2f 100644
--- a/library/test/src/console.rs
+++ b/library/test/src/console.rs
@@ -147,7 +147,7 @@ pub fn list_tests_console(opts: &TestOpts, tests: Vec<TestDescAndFn>) -> io::Res
     let mut ntest = 0;
     let mut nbench = 0;
 
-    for test in filter_tests(&opts, tests).into_iter() {
+    for test in filter_tests(opts, tests).into_iter() {
         use crate::TestFn::*;
 
         let TestDescAndFn { desc: TestDesc { name, .. }, testfn } = test;
@@ -244,7 +244,7 @@ fn on_test_event(
             let stdout = &completed_test.stdout;
 
             st.write_log_result(test, result, exec_time.as_ref())?;
-            out.write_result(test, result, exec_time.as_ref(), &*stdout, st)?;
+            out.write_result(test, result, exec_time.as_ref(), stdout, st)?;
             handle_test_result(st, completed_test);
         }
     }
@@ -262,7 +262,7 @@ pub fn run_tests_console(opts: &TestOpts, tests: Vec<TestDescAndFn>) -> io::Resu
 
     let max_name_len = tests
         .iter()
-        .max_by_key(|t| len_if_padded(*t))
+        .max_by_key(|t| len_if_padded(t))
         .map(|t| t.desc.name.as_slice().len())
         .unwrap_or(0);
 
diff --git a/library/test/src/formatters/json.rs b/library/test/src/formatters/json.rs
index 5526aadb67f..95d2faf2506 100644
--- a/library/test/src/formatters/json.rs
+++ b/library/test/src/formatters/json.rs
@@ -40,20 +40,20 @@ impl<T: Write> JsonFormatter<T> {
         extra: Option<&str>,
     ) -> io::Result<()> {
         // A doc test's name includes a filename which must be escaped for correct json.
-        self.write_message(&*format!(
+        self.write_message(&format!(
             r#"{{ "type": "{}", "name": "{}", "event": "{}""#,
             ty,
             EscapedString(name),
             evt
         ))?;
         if let Some(exec_time) = exec_time {
-            self.write_message(&*format!(r#", "exec_time": {}"#, exec_time.0.as_secs_f64()))?;
+            self.write_message(&format!(r#", "exec_time": {}"#, exec_time.0.as_secs_f64()))?;
         }
         if let Some(stdout) = stdout {
-            self.write_message(&*format!(r#", "stdout": "{}""#, EscapedString(stdout)))?;
+            self.write_message(&format!(r#", "stdout": "{}""#, EscapedString(stdout)))?;
         }
         if let Some(extra) = extra {
-            self.write_message(&*format!(r#", {extra}"#))?;
+            self.write_message(&format!(r#", {extra}"#))?;
         }
         self.writeln_message(" }")
     }
@@ -66,13 +66,13 @@ impl<T: Write> OutputFormatter for JsonFormatter<T> {
         } else {
             String::new()
         };
-        self.writeln_message(&*format!(
+        self.writeln_message(&format!(
             r#"{{ "type": "suite", "event": "started", "test_count": {test_count}{shuffle_seed_json} }}"#
         ))
     }
 
     fn write_test_start(&mut self, desc: &TestDesc) -> io::Result<()> {
-        self.writeln_message(&*format!(
+        self.writeln_message(&format!(
             r#"{{ "type": "test", "event": "started", "name": "{}" }}"#,
             EscapedString(desc.name.as_slice())
         ))
@@ -151,20 +151,20 @@ impl<T: Write> OutputFormatter for JsonFormatter<T> {
                     mbps
                 );
 
-                self.writeln_message(&*line)
+                self.writeln_message(&line)
             }
         }
     }
 
     fn write_timeout(&mut self, desc: &TestDesc) -> io::Result<()> {
-        self.writeln_message(&*format!(
+        self.writeln_message(&format!(
             r#"{{ "type": "test", "event": "timeout", "name": "{}" }}"#,
             EscapedString(desc.name.as_slice())
         ))
     }
 
     fn write_run_finish(&mut self, state: &ConsoleTestState) -> io::Result<bool> {
-        self.write_message(&*format!(
+        self.write_message(&format!(
             "{{ \"type\": \"suite\", \
              \"event\": \"{}\", \
              \"passed\": {}, \
diff --git a/library/test/src/formatters/junit.rs b/library/test/src/formatters/junit.rs
index e6fb4f5707b..7a40ce33cb7 100644
--- a/library/test/src/formatters/junit.rs
+++ b/library/test/src/formatters/junit.rs
@@ -64,7 +64,7 @@ impl<T: Write> OutputFormatter for JunitFormatter<T> {
     fn write_run_finish(&mut self, state: &ConsoleTestState) -> io::Result<bool> {
         self.write_message("<testsuites>")?;
 
-        self.write_message(&*format!(
+        self.write_message(&format!(
             "<testsuite name=\"test\" package=\"test\" id=\"0\" \
              errors=\"0\" \
              failures=\"{}\" \
@@ -73,12 +73,12 @@ impl<T: Write> OutputFormatter for JunitFormatter<T> {
              >",
             state.failed, state.total, state.ignored
         ))?;
-        for (desc, result, duration) in std::mem::replace(&mut self.results, Vec::new()) {
+        for (desc, result, duration) in std::mem::take(&mut self.results) {
             let (class_name, test_name) = parse_class_name(&desc);
             match result {
                 TestResult::TrIgnored => { /* no-op */ }
                 TestResult::TrFailed => {
-                    self.write_message(&*format!(
+                    self.write_message(&format!(
                         "<testcase classname=\"{}\" \
                          name=\"{}\" time=\"{}\">",
                         class_name,
@@ -90,19 +90,19 @@ impl<T: Write> OutputFormatter for JunitFormatter<T> {
                 }
 
                 TestResult::TrFailedMsg(ref m) => {
-                    self.write_message(&*format!(
+                    self.write_message(&format!(
                         "<testcase classname=\"{}\" \
                          name=\"{}\" time=\"{}\">",
                         class_name,
                         test_name,
                         duration.as_secs_f64()
                     ))?;
-                    self.write_message(&*format!("<failure message=\"{m}\" type=\"assert\"/>"))?;
+                    self.write_message(&format!("<failure message=\"{m}\" type=\"assert\"/>"))?;
                     self.write_message("</testcase>")?;
                 }
 
                 TestResult::TrTimedFail => {
-                    self.write_message(&*format!(
+                    self.write_message(&format!(
                         "<testcase classname=\"{}\" \
                          name=\"{}\" time=\"{}\">",
                         class_name,
@@ -114,7 +114,7 @@ impl<T: Write> OutputFormatter for JunitFormatter<T> {
                 }
 
                 TestResult::TrBench(ref b) => {
-                    self.write_message(&*format!(
+                    self.write_message(&format!(
                         "<testcase classname=\"benchmark::{}\" \
                          name=\"{}\" time=\"{}\" />",
                         class_name, test_name, b.ns_iter_summ.sum
@@ -122,7 +122,7 @@ impl<T: Write> OutputFormatter for JunitFormatter<T> {
                 }
 
                 TestResult::TrOk => {
-                    self.write_message(&*format!(
+                    self.write_message(&format!(
                         "<testcase classname=\"{}\" \
                          name=\"{}\" time=\"{}\"/>",
                         class_name,
diff --git a/library/test/src/formatters/pretty.rs b/library/test/src/formatters/pretty.rs
index 0299c8b5433..247778e515f 100644
--- a/library/test/src/formatters/pretty.rs
+++ b/library/test/src/formatters/pretty.rs
@@ -134,7 +134,7 @@ impl<T: Write> PrettyFormatter<T> {
 
         let mut results = Vec::new();
         let mut stdouts = String::new();
-        for &(ref f, ref stdout) in inputs {
+        for (f, stdout) in inputs {
             results.push(f.name.to_string());
             if !stdout.is_empty() {
                 stdouts.push_str(&format!("---- {} stdout ----\n", f.name));
@@ -171,9 +171,9 @@ impl<T: Write> PrettyFormatter<T> {
     fn write_test_name(&mut self, desc: &TestDesc) -> io::Result<()> {
         let name = desc.padded_name(self.max_name_len, desc.name.padding());
         if let Some(test_mode) = desc.test_mode() {
-            self.write_plain(&format!("test {name} - {test_mode} ... "))?;
+            self.write_plain(format!("test {name} - {test_mode} ... "))?;
         } else {
-            self.write_plain(&format!("test {name} ... "))?;
+            self.write_plain(format!("test {name} ... "))?;
         }
 
         Ok(())
@@ -188,7 +188,7 @@ impl<T: Write> OutputFormatter for PrettyFormatter<T> {
         } else {
             String::new()
         };
-        self.write_plain(&format!("\nrunning {test_count} {noun}{shuffle_seed_msg}\n"))
+        self.write_plain(format!("\nrunning {test_count} {noun}{shuffle_seed_msg}\n"))
     }
 
     fn write_test_start(&mut self, desc: &TestDesc) -> io::Result<()> {
@@ -221,7 +221,7 @@ impl<T: Write> OutputFormatter for PrettyFormatter<T> {
             TestResult::TrIgnored => self.write_ignored(desc.ignore_message)?,
             TestResult::TrBench(ref bs) => {
                 self.write_bench()?;
-                self.write_plain(&format!(": {}", fmt_bench_samples(bs)))?;
+                self.write_plain(format!(": {}", fmt_bench_samples(bs)))?;
             }
             TestResult::TrTimedFail => self.write_time_failed()?,
         }
@@ -231,7 +231,7 @@ impl<T: Write> OutputFormatter for PrettyFormatter<T> {
     }
 
     fn write_timeout(&mut self, desc: &TestDesc) -> io::Result<()> {
-        self.write_plain(&format!(
+        self.write_plain(format!(
             "test {} has been running for over {} seconds\n",
             desc.name,
             time::TEST_WARN_TIMEOUT_S
@@ -267,11 +267,11 @@ impl<T: Write> OutputFormatter for PrettyFormatter<T> {
             state.passed, state.failed, state.ignored, state.measured, state.filtered_out
         );
 
-        self.write_plain(&s)?;
+        self.write_plain(s)?;
 
         if let Some(ref exec_time) = state.exec_time {
             let time_str = format!("; finished in {exec_time}");
-            self.write_plain(&time_str)?;
+            self.write_plain(time_str)?;
         }
 
         self.write_plain("\n\n")?;
diff --git a/library/test/src/formatters/terse.rs b/library/test/src/formatters/terse.rs
index 5dace8baef7..0837ab16905 100644
--- a/library/test/src/formatters/terse.rs
+++ b/library/test/src/formatters/terse.rs
@@ -70,7 +70,7 @@ impl<T: Write> TerseFormatter<T> {
             // screen when dealing with line-buffered output (e.g., piping to
             // `stamp` in the rust CI).
             let out = format!(" {}/{}\n", self.test_count + 1, self.total_test_count);
-            self.write_plain(&out)?;
+            self.write_plain(out)?;
         }
 
         self.test_count += 1;
@@ -106,7 +106,7 @@ impl<T: Write> TerseFormatter<T> {
         self.write_plain("\nsuccesses:\n")?;
         let mut successes = Vec::new();
         let mut stdouts = String::new();
-        for &(ref f, ref stdout) in &state.not_failures {
+        for (f, stdout) in &state.not_failures {
             successes.push(f.name.to_string());
             if !stdout.is_empty() {
                 stdouts.push_str(&format!("---- {} stdout ----\n", f.name));
@@ -132,7 +132,7 @@ impl<T: Write> TerseFormatter<T> {
         self.write_plain("\nfailures:\n")?;
         let mut failures = Vec::new();
         let mut fail_out = String::new();
-        for &(ref f, ref stdout) in &state.failures {
+        for (f, stdout) in &state.failures {
             failures.push(f.name.to_string());
             if !stdout.is_empty() {
                 fail_out.push_str(&format!("---- {} stdout ----\n", f.name));
@@ -157,9 +157,9 @@ impl<T: Write> TerseFormatter<T> {
     fn write_test_name(&mut self, desc: &TestDesc) -> io::Result<()> {
         let name = desc.padded_name(self.max_name_len, desc.name.padding());
         if let Some(test_mode) = desc.test_mode() {
-            self.write_plain(&format!("test {name} - {test_mode} ... "))?;
+            self.write_plain(format!("test {name} - {test_mode} ... "))?;
         } else {
-            self.write_plain(&format!("test {name} ... "))?;
+            self.write_plain(format!("test {name} ... "))?;
         }
 
         Ok(())
@@ -175,7 +175,7 @@ impl<T: Write> OutputFormatter for TerseFormatter<T> {
         } else {
             String::new()
         };
-        self.write_plain(&format!("\nrunning {test_count} {noun}{shuffle_seed_msg}\n"))
+        self.write_plain(format!("\nrunning {test_count} {noun}{shuffle_seed_msg}\n"))
     }
 
     fn write_test_start(&mut self, desc: &TestDesc) -> io::Result<()> {
@@ -209,13 +209,13 @@ impl<T: Write> OutputFormatter for TerseFormatter<T> {
                     self.write_test_name(desc)?;
                 }
                 self.write_bench()?;
-                self.write_plain(&format!(": {}\n", fmt_bench_samples(bs)))
+                self.write_plain(format!(": {}\n", fmt_bench_samples(bs)))
             }
         }
     }
 
     fn write_timeout(&mut self, desc: &TestDesc) -> io::Result<()> {
-        self.write_plain(&format!(
+        self.write_plain(format!(
             "test {} has been running for over {} seconds\n",
             desc.name,
             time::TEST_WARN_TIMEOUT_S
@@ -245,11 +245,11 @@ impl<T: Write> OutputFormatter for TerseFormatter<T> {
             state.passed, state.failed, state.ignored, state.measured, state.filtered_out
         );
 
-        self.write_plain(&s)?;
+        self.write_plain(s)?;
 
         if let Some(ref exec_time) = state.exec_time {
             let time_str = format!("; finished in {exec_time}");
-            self.write_plain(&time_str)?;
+            self.write_plain(time_str)?;
         }
 
         self.write_plain("\n\n")?;
diff --git a/library/test/src/lib.rs b/library/test/src/lib.rs
index f6a41bbb88c..30dc4ff8553 100644
--- a/library/test/src/lib.rs
+++ b/library/test/src/lib.rs
@@ -789,7 +789,7 @@ fn run_test_in_spawned_subprocess(
         }
     });
     let record_result2 = record_result.clone();
-    panic::set_hook(Box::new(move |info| record_result2(Some(&info))));
+    panic::set_hook(Box::new(move |info| record_result2(Some(info))));
     if let Err(message) = testfn() {
         panic!("{}", message);
     }
diff --git a/library/test/src/term/terminfo/mod.rs b/library/test/src/term/terminfo/mod.rs
index 35585901971..67ba89410cd 100644
--- a/library/test/src/term/terminfo/mod.rs
+++ b/library/test/src/term/terminfo/mod.rs
@@ -149,7 +149,7 @@ impl<T: Write + Send> Terminal for TerminfoTerminal<T> {
         // are there any terminals that have color/attrs and not sgr0?
         // Try falling back to sgr, then op
         let cmd = match ["sgr0", "sgr", "op"].iter().find_map(|cap| self.ti.strings.get(*cap)) {
-            Some(op) => match expand(&op, &[], &mut Variables::new()) {
+            Some(op) => match expand(op, &[], &mut Variables::new()) {
                 Ok(cmd) => cmd,
                 Err(e) => return Err(io::Error::new(io::ErrorKind::InvalidData, e)),
             },
@@ -180,12 +180,12 @@ impl<T: Write + Send> TerminfoTerminal<T> {
     }
 
     fn dim_if_necessary(&self, color: color::Color) -> color::Color {
-        if color >= self.num_colors && color >= 8 && color < 16 { color - 8 } else { color }
+        if color >= self.num_colors && (8..16).contains(&color) { color - 8 } else { color }
     }
 
     fn apply_cap(&mut self, cmd: &str, params: &[Param]) -> io::Result<bool> {
         match self.ti.strings.get(cmd) {
-            Some(cmd) => match expand(&cmd, params, &mut Variables::new()) {
+            Some(cmd) => match expand(cmd, params, &mut Variables::new()) {
                 Ok(s) => self.out.write_all(&s).and(Ok(true)),
                 Err(e) => Err(io::Error::new(io::ErrorKind::InvalidData, e)),
             },
diff --git a/library/test/src/term/terminfo/parm.rs b/library/test/src/term/terminfo/parm.rs
index 0756c8374aa..2815f6cfc77 100644
--- a/library/test/src/term/terminfo/parm.rs
+++ b/library/test/src/term/terminfo/parm.rs
@@ -282,14 +282,14 @@ pub(crate) fn expand(
                 );
             }
             SetVar => {
-                if cur >= 'A' && cur <= 'Z' {
+                if cur.is_ascii_uppercase() {
                     if let Some(arg) = stack.pop() {
                         let idx = (cur as u8) - b'A';
                         vars.sta_va[idx as usize] = arg;
                     } else {
                         return Err("stack is empty".to_string());
                     }
-                } else if cur >= 'a' && cur <= 'z' {
+                } else if cur.is_ascii_lowercase() {
                     if let Some(arg) = stack.pop() {
                         let idx = (cur as u8) - b'a';
                         vars.dyn_va[idx as usize] = arg;
@@ -301,10 +301,10 @@ pub(crate) fn expand(
                 }
             }
             GetVar => {
-                if cur >= 'A' && cur <= 'Z' {
+                if cur.is_ascii_uppercase() {
                     let idx = (cur as u8) - b'A';
                     stack.push(vars.sta_va[idx as usize].clone());
-                } else if cur >= 'a' && cur <= 'z' {
+                } else if cur.is_ascii_lowercase() {
                     let idx = (cur as u8) - b'a';
                     stack.push(vars.dyn_va[idx as usize].clone());
                 } else {
diff --git a/library/test/src/term/terminfo/searcher.rs b/library/test/src/term/terminfo/searcher.rs
index 68e181a6895..87b91f34498 100644
--- a/library/test/src/term/terminfo/searcher.rs
+++ b/library/test/src/term/terminfo/searcher.rs
@@ -22,7 +22,7 @@ pub(crate) fn get_dbpath_for_term(term: &str) -> Option<PathBuf> {
 
     if let Ok(dirs) = env::var("TERMINFO_DIRS") {
         for i in dirs.split(':') {
-            if i == "" {
+            if i.is_empty() {
                 dirs_to_search.push(PathBuf::from("/usr/share/terminfo"));
             } else {
                 dirs_to_search.push(PathBuf::from(i));
@@ -49,7 +49,7 @@ pub(crate) fn get_dbpath_for_term(term: &str) -> Option<PathBuf> {
     for mut p in dirs_to_search {
         if fs::metadata(&p).is_ok() {
             p.push(&first_char.to_string());
-            p.push(&term);
+            p.push(term);
             if fs::metadata(&p).is_ok() {
                 return Some(p);
             }
diff --git a/library/test/src/test_result.rs b/library/test/src/test_result.rs
index 7c5b0d6c0f7..1da238e3e8c 100644
--- a/library/test/src/test_result.rs
+++ b/library/test/src/test_result.rs
@@ -33,7 +33,7 @@ pub fn calc_result<'a>(
 ) -> TestResult {
     let result = match (&desc.should_panic, task_result) {
         (&ShouldPanic::No, Ok(())) | (&ShouldPanic::Yes, Err(_)) => TestResult::TrOk,
-        (&ShouldPanic::YesWithMessage(msg), Err(ref err)) => {
+        (&ShouldPanic::YesWithMessage(msg), Err(err)) => {
             let maybe_panic_str = err
                 .downcast_ref::<String>()
                 .map(|e| &**e)
@@ -52,7 +52,7 @@ pub fn calc_result<'a>(
                     r#"expected panic with string value,
  found non-string value: `{:?}`
      expected substring: `{:?}`"#,
-                    (**err).type_id(),
+                    (*err).type_id(),
                     msg
                 ))
             }
diff --git a/library/test/src/types.rs b/library/test/src/types.rs
index 888afff7921..6f2e033095a 100644
--- a/library/test/src/types.rs
+++ b/library/test/src/types.rs
@@ -47,7 +47,7 @@ impl TestName {
         match *self {
             StaticTestName(s) => s,
             DynTestName(ref s) => s,
-            AlignedTestName(ref s, _) => &*s,
+            AlignedTestName(ref s, _) => s,
         }
     }
 
diff --git a/src/librustdoc/html/static/js/main.js b/src/librustdoc/html/static/js/main.js
index 60e4e749224..51aee8e7c89 100644
--- a/src/librustdoc/html/static/js/main.js
+++ b/src/librustdoc/html/static/js/main.js
@@ -563,7 +563,7 @@ function loadCss(cssUrl) {
                 onEachLazy(code.getElementsByTagName("a"), elem => {
                     const href = elem.getAttribute("href");
 
-                    if (href && href.indexOf("http") !== 0) {
+                    if (href && !/^(?:[a-z+]+:)?\/\//.test(href)) {
                         elem.setAttribute("href", window.rootPath + href);
                     }
                 });
@@ -1040,9 +1040,6 @@ function loadCss(cssUrl) {
             help_button.appendChild(container);
 
             container.onblur = helpBlurHandler;
-            container.onclick = event => {
-                event.preventDefault();
-            };
             help_button.onblur = helpBlurHandler;
             help_button.children[0].onblur = helpBlurHandler;
         }
diff --git a/src/librustdoc/json/conversions.rs b/src/librustdoc/json/conversions.rs
index 84af194904d..56283b2c0ef 100644
--- a/src/librustdoc/json/conversions.rs
+++ b/src/librustdoc/json/conversions.rs
@@ -8,8 +8,9 @@ use std::convert::From;
 use std::fmt;
 
 use rustc_ast::ast;
-use rustc_hir::{def::CtorKind, def_id::DefId};
+use rustc_hir::{def::CtorKind, def::DefKind, def_id::DefId};
 use rustc_middle::ty::{self, TyCtxt};
+use rustc_span::symbol::sym;
 use rustc_span::{Pos, Symbol};
 use rustc_target::spec::abi::Abi as RustcAbi;
 
@@ -217,13 +218,27 @@ pub(crate) fn from_item_id_with_name(item_id: ItemId, tcx: TyCtxt<'_>, name: Opt
 
     impl<'a> fmt::Display for DisplayDefId<'a> {
         fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
-            let name = match self.2 {
+            let DisplayDefId(def_id, tcx, name) = self;
+            let name = match name {
                 Some(name) => format!(":{}", name.as_u32()),
-                None => self
-                    .1
-                    .opt_item_name(self.0)
-                    .map(|n| format!(":{}", n.as_u32()))
-                    .unwrap_or_default(),
+                None => {
+                    // We need this workaround because primitive types' DefId actually refers to
+                    // their parent module, which isn't present in the output JSON items. So
+                    // instead, we directly get the primitive symbol and convert it to u32 to
+                    // generate the ID.
+                    if matches!(tcx.def_kind(def_id), DefKind::Mod) &&
+                        let Some(prim) = tcx.get_attrs(*def_id, sym::doc)
+                            .flat_map(|attr| attr.meta_item_list().unwrap_or_default())
+                            .filter(|attr| attr.has_name(sym::primitive))
+                            .find_map(|attr| attr.value_str()) {
+                        format!(":{}", prim.as_u32())
+                    } else {
+                        tcx
+                        .opt_item_name(*def_id)
+                        .map(|n| format!(":{}", n.as_u32()))
+                        .unwrap_or_default()
+                    }
+                }
             };
             write!(f, "{}:{}{}", self.0.krate.as_u32(), u32::from(self.0.index), name)
         }
@@ -237,7 +252,7 @@ pub(crate) fn from_item_id_with_name(item_id: ItemId, tcx: TyCtxt<'_>, name: Opt
         ItemId::Auto { for_, trait_ } => {
             Id(format!("a:{}-{}", DisplayDefId(trait_, tcx, None), DisplayDefId(for_, tcx, name)))
         }
-        ItemId::Primitive(ty, krate) => Id(format!("p:{}:{}", krate.as_u32(), ty.as_sym())),
+        ItemId::Primitive(_, _) => unreachable!(),
     }
 }
 
diff --git a/src/test/rustdoc-gui/help-page.goml b/src/test/rustdoc-gui/help-page.goml
index 80203901ed3..83f2556fd8f 100644
--- a/src/test/rustdoc-gui/help-page.goml
+++ b/src/test/rustdoc-gui/help-page.goml
@@ -61,3 +61,12 @@ click: "#help-button > a"
 assert-css: ("#help", {"display": "none"})
 compare-elements-property-false: (".sub", "#help", ["offsetWidth"])
 compare-elements-position-false: (".sub", "#help", ("x"))
+
+// This test ensures that the "the rustdoc book" anchor link within the help popover works.
+goto: "file://" + |DOC_PATH| + "/test_docs/index.html"
+size: (1000, 1000) // Popover only appears when the screen width is >700px.
+assert-false: "#help"
+click: "#help-button > a"
+click: ".popover a[href='https://doc.rust-lang.org/rustdoc/']"
+wait-for: 2000
+assert-document-property: {"URL": "https://doc.rust-lang.org/rustdoc/"}
diff --git a/src/test/rustdoc-gui/implementors.goml b/src/test/rustdoc-gui/implementors.goml
index 4999283dc8b..997c0ed8f01 100644
--- a/src/test/rustdoc-gui/implementors.goml
+++ b/src/test/rustdoc-gui/implementors.goml
@@ -33,3 +33,9 @@ goto: "file://" + |DOC_PATH| + "/lib2/trait.TraitToReexport.html"
 assert-count: ("#implementors-list .impl", 1)
 goto: "file://" + |DOC_PATH| + "/implementors/trait.TraitToReexport.html"
 assert-count: ("#implementors-list .impl", 1)
+
+// Now check that the link is properly rewritten for a crate called `http`.
+// An older version of rustdoc had a buggy check for absolute links.
+goto: "file://" + |DOC_PATH| + "/http/trait.HttpTrait.html"
+assert-count: ("#implementors-list .impl", 1)
+assert-attribute: ("#implementors-list .impl a.trait", {"href": "../http/trait.HttpTrait.html"})
diff --git a/src/test/rustdoc-gui/search-filter.goml b/src/test/rustdoc-gui/search-filter.goml
index e556da0c54e..5bc6e87d6d2 100644
--- a/src/test/rustdoc-gui/search-filter.goml
+++ b/src/test/rustdoc-gui/search-filter.goml
@@ -15,6 +15,7 @@ click: "#crate-search"
 press-key: "ArrowDown"
 press-key: "ArrowDown"
 press-key: "ArrowDown"
+press-key: "ArrowDown"
 press-key: "Enter"
 // Waiting for the search results to appear...
 wait-for: "#search-tabs"
@@ -39,6 +40,7 @@ click: "#crate-search"
 press-key: "ArrowUp"
 press-key: "ArrowUp"
 press-key: "ArrowUp"
+press-key: "ArrowUp"
 press-key: "Enter"
 // Waiting for the search results to appear...
 wait-for: "#search-tabs"
diff --git a/src/test/rustdoc-gui/sidebar-source-code.goml b/src/test/rustdoc-gui/sidebar-source-code.goml
index d5f57ed6102..6bc07fbae04 100644
--- a/src/test/rustdoc-gui/sidebar-source-code.goml
+++ b/src/test/rustdoc-gui/sidebar-source-code.goml
@@ -73,7 +73,7 @@ assert: "//*[@class='dir-entry' and @open]/*[text()='sub_mod']"
 // Only "another_folder" should be "open" in "lib2".
 assert: "//*[@class='dir-entry' and not(@open)]/*[text()='another_mod']"
 // All other trees should be collapsed.
-assert-count: ("//*[@id='source-sidebar']/details[not(text()='lib2') and not(@open)]", 7)
+assert-count: ("//*[@id='source-sidebar']/details[not(text()='lib2') and not(@open)]", 8)
 
 // We now switch to mobile mode.
 size: (600, 600)
diff --git a/src/test/rustdoc-gui/source-code-page.goml b/src/test/rustdoc-gui/source-code-page.goml
index aa792196960..e0397890519 100644
--- a/src/test/rustdoc-gui/source-code-page.goml
+++ b/src/test/rustdoc-gui/source-code-page.goml
@@ -102,7 +102,7 @@ assert: ".source-sidebar-expanded"
 
 // We check that the first entry of the sidebar is collapsed
 assert-property: ("#source-sidebar details:first-of-type", {"open": "false"})
-assert-text: ("#source-sidebar details:first-of-type > summary", "huge_logo")
+assert-text: ("#source-sidebar details:first-of-type > summary", "http")
 // We now click on it.
 click: "#source-sidebar details:first-of-type > summary"
 assert-property: ("#source-sidebar details:first-of-type", {"open": "true"})
diff --git a/src/test/rustdoc-gui/src/lib2/Cargo.lock b/src/test/rustdoc-gui/src/lib2/Cargo.lock
index a5873ceb325..425a3ae7e5c 100644
--- a/src/test/rustdoc-gui/src/lib2/Cargo.lock
+++ b/src/test/rustdoc-gui/src/lib2/Cargo.lock
@@ -3,12 +3,20 @@
 version = 3
 
 [[package]]
+name = "http"
+version = "0.1.0"
+
+[[package]]
 name = "implementors"
 version = "0.1.0"
+dependencies = [
+ "http",
+]
 
 [[package]]
 name = "lib2"
 version = "0.1.0"
 dependencies = [
+ "http",
  "implementors",
 ]
diff --git a/src/test/rustdoc-gui/src/lib2/Cargo.toml b/src/test/rustdoc-gui/src/lib2/Cargo.toml
index 2e37f3f667a..8bca77ff834 100644
--- a/src/test/rustdoc-gui/src/lib2/Cargo.toml
+++ b/src/test/rustdoc-gui/src/lib2/Cargo.toml
@@ -8,3 +8,4 @@ path = "lib.rs"
 
 [dependencies]
 implementors = { path = "./implementors" }
+http = { path = "./http" }
diff --git a/src/test/rustdoc-gui/src/lib2/http/Cargo.toml b/src/test/rustdoc-gui/src/lib2/http/Cargo.toml
new file mode 100644
index 00000000000..fa719efa526
--- /dev/null
+++ b/src/test/rustdoc-gui/src/lib2/http/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "http"
+version = "0.1.0"
+edition = "2018"
+
+[lib]
+path = "lib.rs"
diff --git a/src/test/rustdoc-gui/src/lib2/http/lib.rs b/src/test/rustdoc-gui/src/lib2/http/lib.rs
new file mode 100644
index 00000000000..204e0749427
--- /dev/null
+++ b/src/test/rustdoc-gui/src/lib2/http/lib.rs
@@ -0,0 +1 @@
+pub trait HttpTrait {}
diff --git a/src/test/rustdoc-gui/src/lib2/implementors/Cargo.toml b/src/test/rustdoc-gui/src/lib2/implementors/Cargo.toml
index 7ef1052c49f..9dafc43df5f 100644
--- a/src/test/rustdoc-gui/src/lib2/implementors/Cargo.toml
+++ b/src/test/rustdoc-gui/src/lib2/implementors/Cargo.toml
@@ -5,3 +5,6 @@ edition = "2018"
 
 [lib]
 path = "lib.rs"
+
+[dependencies]
+http = { path = "../http/" }
diff --git a/src/test/rustdoc-gui/src/lib2/implementors/lib.rs b/src/test/rustdoc-gui/src/lib2/implementors/lib.rs
index 1620e842291..2842ac50dc1 100644
--- a/src/test/rustdoc-gui/src/lib2/implementors/lib.rs
+++ b/src/test/rustdoc-gui/src/lib2/implementors/lib.rs
@@ -10,6 +10,8 @@ impl Whatever for Struct {
     type Foo = u8;
 }
 
+impl http::HttpTrait for Struct {}
+
 mod traits {
     pub trait TraitToReexport {
         fn method() {}
diff --git a/src/test/rustdoc-json/primitives/local_primitive.rs b/src/test/rustdoc-json/primitives/local_primitive.rs
new file mode 100644
index 00000000000..f27e6a2adec
--- /dev/null
+++ b/src/test/rustdoc-json/primitives/local_primitive.rs
@@ -0,0 +1,21 @@
+// Regression test for <https://github.com/rust-lang/rust/issues/104064>.
+
+#![feature(no_core)]
+#![feature(rustc_attrs)]
+#![feature(rustdoc_internals)]
+#![no_core]
+#![rustc_coherence_is_core]
+
+//! Link to [i32][prim@i32] [i64][prim@i64]
+
+#[doc(primitive = "i32")]
+mod prim_i32 {}
+
+// @set local_i32 = "$.index[*][?(@.name=='i32')].id"
+
+// @has "$.index[*][?(@.name=='local_primitive')]"
+// @ismany "$.index[*][?(@.name=='local_primitive')].inner.items[*]" $local_i32
+// @is "$.index[*][?(@.name=='local_primitive')].links['prim@i32']" $local_i32
+
+// Let's ensure the `prim_i32` module isn't present in the output JSON:
+// @!has "$.index[*][?(@.name=='prim_i32')]"
diff --git a/src/test/ui/issues/issue-105330.rs b/src/test/ui/associated-consts/issue-105330.rs
index 86e45f10b0e..86e45f10b0e 100644
--- a/src/test/ui/issues/issue-105330.rs
+++ b/src/test/ui/associated-consts/issue-105330.rs
diff --git a/src/test/ui/issues/issue-105330.stderr b/src/test/ui/associated-consts/issue-105330.stderr
index 30c380152a5..30c380152a5 100644
--- a/src/test/ui/issues/issue-105330.stderr
+++ b/src/test/ui/associated-consts/issue-105330.stderr
diff --git a/src/test/ui/issues/issue-25700-1.rs b/src/test/ui/associated-types/issue-25700-1.rs
index 5e71a52ba4e..5e71a52ba4e 100644
--- a/src/test/ui/issues/issue-25700-1.rs
+++ b/src/test/ui/associated-types/issue-25700-1.rs
diff --git a/src/test/ui/issues/issue-25700-2.rs b/src/test/ui/associated-types/issue-25700-2.rs
index 89b1db496f9..89b1db496f9 100644
--- a/src/test/ui/issues/issue-25700-2.rs
+++ b/src/test/ui/associated-types/issue-25700-2.rs
diff --git a/src/test/ui/issues/issue-25700.rs b/src/test/ui/associated-types/issue-25700.rs
index e5b9a97523d..e5b9a97523d 100644
--- a/src/test/ui/issues/issue-25700.rs
+++ b/src/test/ui/associated-types/issue-25700.rs
diff --git a/src/test/ui/issues/issue-25700.stderr b/src/test/ui/associated-types/issue-25700.stderr
index fa309a55c3c..fa309a55c3c 100644
--- a/src/test/ui/issues/issue-25700.stderr
+++ b/src/test/ui/associated-types/issue-25700.stderr
diff --git a/src/test/ui/issues/issue-82859-slice-miscompile.rs b/src/test/ui/codegen/issue-82859-slice-miscompile.rs
index b64eb499071..b64eb499071 100644
--- a/src/test/ui/issues/issue-82859-slice-miscompile.rs
+++ b/src/test/ui/codegen/issue-82859-slice-miscompile.rs
diff --git a/src/test/ui/issues/issue-10626.rs b/src/test/ui/command/issue-10626.rs
index 696a2dd1657..696a2dd1657 100644
--- a/src/test/ui/issues/issue-10626.rs
+++ b/src/test/ui/command/issue-10626.rs
diff --git a/src/test/ui/issues/issue-2734.rs b/src/test/ui/drop/issue-2734.rs
index df4f394dc37..df4f394dc37 100644
--- a/src/test/ui/issues/issue-2734.rs
+++ b/src/test/ui/drop/issue-2734.rs
diff --git a/src/test/ui/issues/issue-34053.rs b/src/test/ui/dropck/issue-34053.rs
index fa23ae8f95b..fa23ae8f95b 100644
--- a/src/test/ui/issues/issue-34053.rs
+++ b/src/test/ui/dropck/issue-34053.rs
diff --git a/src/test/ui/issues/issue-72554.rs b/src/test/ui/enum-discriminant/issue-72554.rs
index 54f7e9ac592..54f7e9ac592 100644
--- a/src/test/ui/issues/issue-72554.rs
+++ b/src/test/ui/enum-discriminant/issue-72554.rs
diff --git a/src/test/ui/issues/issue-72554.stderr b/src/test/ui/enum-discriminant/issue-72554.stderr
index d12be539f7c..d12be539f7c 100644
--- a/src/test/ui/issues/issue-72554.stderr
+++ b/src/test/ui/enum-discriminant/issue-72554.stderr
diff --git a/src/test/ui/issues/issue-13655.rs b/src/test/ui/extern/issue-13655.rs
index 6dd1847995f..6dd1847995f 100644
--- a/src/test/ui/issues/issue-13655.rs
+++ b/src/test/ui/extern/issue-13655.rs
diff --git a/src/test/ui/issues/issue-10536.rs b/src/test/ui/macros/issue-10536.rs
index f536d8f940a..f536d8f940a 100644
--- a/src/test/ui/issues/issue-10536.rs
+++ b/src/test/ui/macros/issue-10536.rs
diff --git a/src/test/ui/issues/issue-10536.stderr b/src/test/ui/macros/issue-10536.stderr
index cc048445871..cc048445871 100644
--- a/src/test/ui/issues/issue-10536.stderr
+++ b/src/test/ui/macros/issue-10536.stderr
diff --git a/src/test/ui/issues/issue-54189.rs b/src/test/ui/nll/issue-54189.rs
index 70aecc384ef..70aecc384ef 100644
--- a/src/test/ui/issues/issue-54189.rs
+++ b/src/test/ui/nll/issue-54189.rs
diff --git a/src/test/ui/issues/issue-54189.stderr b/src/test/ui/nll/issue-54189.stderr
index 4787abd49d1..4787abd49d1 100644
--- a/src/test/ui/issues/issue-54189.stderr
+++ b/src/test/ui/nll/issue-54189.stderr
diff --git a/src/test/ui/issues/issue-99875.rs b/src/test/ui/traits/issue-99875.rs
index cf73fd8d31f..cf73fd8d31f 100644
--- a/src/test/ui/issues/issue-99875.rs
+++ b/src/test/ui/traits/issue-99875.rs
diff --git a/src/test/ui/issues/issue-99875.stderr b/src/test/ui/traits/issue-99875.stderr
index 3ff8f12f1b8..3ff8f12f1b8 100644
--- a/src/test/ui/issues/issue-99875.stderr
+++ b/src/test/ui/traits/issue-99875.stderr
diff --git a/src/test/ui/issues/issue-18937-1.rs b/src/test/ui/typeck/issue-18937-1.rs
index 57e56d832c6..57e56d832c6 100644
--- a/src/test/ui/issues/issue-18937-1.rs
+++ b/src/test/ui/typeck/issue-18937-1.rs
diff --git a/src/test/ui/issues/issue-18937.rs b/src/test/ui/typeck/issue-18937.rs
index af85e5b2b02..af85e5b2b02 100644
--- a/src/test/ui/issues/issue-18937.rs
+++ b/src/test/ui/typeck/issue-18937.rs
diff --git a/src/test/ui/issues/issue-18937.stderr b/src/test/ui/typeck/issue-18937.stderr
index 5e2ba0ef4fc..5e2ba0ef4fc 100644
--- a/src/test/ui/issues/issue-18937.stderr
+++ b/src/test/ui/typeck/issue-18937.stderr
diff --git a/src/test/ui/issues/issue-31173.rs b/src/test/ui/typeck/issue-31173.rs
index f678df5b42b..f678df5b42b 100644
--- a/src/test/ui/issues/issue-31173.rs
+++ b/src/test/ui/typeck/issue-31173.rs
diff --git a/src/test/ui/issues/issue-31173.stderr b/src/test/ui/typeck/issue-31173.stderr
index f3be99f9bcb..f3be99f9bcb 100644
--- a/src/test/ui/issues/issue-31173.stderr
+++ b/src/test/ui/typeck/issue-31173.stderr
diff --git a/src/tools/tidy/src/ui_tests.rs b/src/tools/tidy/src/ui_tests.rs
index 070e72437be..166d09fa8b0 100644
--- a/src/tools/tidy/src/ui_tests.rs
+++ b/src/tools/tidy/src/ui_tests.rs
@@ -10,7 +10,7 @@ use std::path::Path;
 const ENTRY_LIMIT: usize = 1000;
 // FIXME: The following limits should be reduced eventually.
 const ROOT_ENTRY_LIMIT: usize = 939;
-const ISSUES_ENTRY_LIMIT: usize = 2050;
+const ISSUES_ENTRY_LIMIT: usize = 1998;
 
 fn check_entries(path: &Path, bad: &mut bool) {
     for dir in Walk::new(&path.join("test/ui")) {