Auto merge of #106256 - matthiaskrgr:rollup-g1ovcqq, r=matthiaskrgr

Rollup of 9 pull requests

Successful merges:

 - #106208 (Make trait/impl `where` clause mismatch on region error a bit more actionable)
 - #106216 (Powershell: Use `WaitForExit` instead of `-Wait`)
 - #106217 (rustdoc: remove unnecessary `.tooltip::after { text-align: center }`)
 - #106218 (Migrate css var scraped examples)
 - #106221 (Rename `Rptr` to `Ref` in AST and HIR)
 - #106223 (On unsized locals with explicit types suggest `&`)
 - #106225 (Remove CraftSpider from review rotation)
 - #106229 (update Miri)
 - #106242 (Detect diff markers in the parser)

Failed merges:

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

22 files changed, 318 insertions, 0 deletions

diff --git a/src/test/ui/parser/diff-markers/enum-2.rs b/src/test/ui/parser/diff-markers/enum-2.rs
new file mode 100644
index 00000000000..76ea980fc62
--- /dev/null
+++ b/src/test/ui/parser/diff-markers/enum-2.rs
@@ -0,0 +1,11 @@
+enum E {
+    Foo {
+<<<<<<< HEAD //~ ERROR encountered diff marker
+        x: u8,
+|||||||
+        z: (),
+=======
+        y: i8,
+>>>>>>> branch
+    }
+}
diff --git a/src/test/ui/parser/diff-markers/enum-2.stderr b/src/test/ui/parser/diff-markers/enum-2.stderr
new file mode 100644
index 00000000000..63da5c2a6e1
--- /dev/null
+++ b/src/test/ui/parser/diff-markers/enum-2.stderr
@@ -0,0 +1,21 @@
+error: encountered diff marker
+  --> $DIR/enum-2.rs:3:1
+   |
+LL | <<<<<<< HEAD
+   | ^^^^^^^ after this is the code before the merge
+LL |         x: u8,
+LL | |||||||
+   | -------
+LL |         z: (),
+LL | =======
+   | -------
+LL |         y: i8,
+LL | >>>>>>> branch
+   | ^^^^^^^ above this are the incoming code changes
+   |
+   = help: if you're having merge conflicts after pulling new code, the top section is the code you already had and the bottom section is the remote code
+   = help: if you're in the middle of a rebase, the top section is the code being rebased onto and the bottom section is the code coming from the current commit being rebased
+   = note: for an explanation on these markers from the `git` documentation, visit <https://git-scm.com/book/en/v2/Git-Tools-Advanced-Merging#_checking_out_conflicts>
+
+error: aborting due to previous error
+
diff --git a/src/test/ui/parser/diff-markers/enum.rs b/src/test/ui/parser/diff-markers/enum.rs
new file mode 100644
index 00000000000..45df6e3251d
--- /dev/null
+++ b/src/test/ui/parser/diff-markers/enum.rs
@@ -0,0 +1,7 @@
+enum E {
+<<<<<<< HEAD //~ ERROR encountered diff marker
+    Foo(u8),
+=======
+    Bar(i8),
+>>>>>>> branch
+}
diff --git a/src/test/ui/parser/diff-markers/enum.stderr b/src/test/ui/parser/diff-markers/enum.stderr
new file mode 100644
index 00000000000..abbf3fb41e7
--- /dev/null
+++ b/src/test/ui/parser/diff-markers/enum.stderr
@@ -0,0 +1,18 @@
+error: encountered diff marker
+  --> $DIR/enum.rs:2:1
+   |
+LL | <<<<<<< HEAD
+   | ^^^^^^^ after this is the code before the merge
+LL |     Foo(u8),
+LL | =======
+   | -------
+LL |     Bar(i8),
+LL | >>>>>>> branch
+   | ^^^^^^^ above this are the incoming code changes
+   |
+   = help: if you're having merge conflicts after pulling new code, the top section is the code you already had and the bottom section is the remote code
+   = help: if you're in the middle of a rebase, the top section is the code being rebased onto and the bottom section is the code coming from the current commit being rebased
+   = note: for an explanation on these markers from the `git` documentation, visit <https://git-scm.com/book/en/v2/Git-Tools-Advanced-Merging#_checking_out_conflicts>
+
+error: aborting due to previous error
+
diff --git a/src/test/ui/parser/diff-markers/fn-arg.rs b/src/test/ui/parser/diff-markers/fn-arg.rs
new file mode 100644
index 00000000000..86c355628ab
--- /dev/null
+++ b/src/test/ui/parser/diff-markers/fn-arg.rs
@@ -0,0 +1,16 @@
+trait T {
+    fn foo(
+<<<<<<< HEAD //~ ERROR encountered diff marker
+        x: u8,
+=======
+        x: i8,
+>>>>>>> branch
+    ) {}
+}
+
+struct S;
+impl T for S {}
+
+fn main() {
+    S::foo(42);
+}
diff --git a/src/test/ui/parser/diff-markers/fn-arg.stderr b/src/test/ui/parser/diff-markers/fn-arg.stderr
new file mode 100644
index 00000000000..933a206410e
--- /dev/null
+++ b/src/test/ui/parser/diff-markers/fn-arg.stderr
@@ -0,0 +1,18 @@
+error: encountered diff marker
+  --> $DIR/fn-arg.rs:3:1
+   |
+LL | <<<<<<< HEAD
+   | ^^^^^^^ after this is the code before the merge
+LL |         x: u8,
+LL | =======
+   | -------
+LL |         x: i8,
+LL | >>>>>>> branch
+   | ^^^^^^^ above this are the incoming code changes
+   |
+   = help: if you're having merge conflicts after pulling new code, the top section is the code you already had and the bottom section is the remote code
+   = help: if you're in the middle of a rebase, the top section is the code being rebased onto and the bottom section is the code coming from the current commit being rebased
+   = note: for an explanation on these markers from the `git` documentation, visit <https://git-scm.com/book/en/v2/Git-Tools-Advanced-Merging#_checking_out_conflicts>
+
+error: aborting due to previous error
+
diff --git a/src/test/ui/parser/diff-markers/item-with-attr.rs b/src/test/ui/parser/diff-markers/item-with-attr.rs
new file mode 100644
index 00000000000..985907c08b2
--- /dev/null
+++ b/src/test/ui/parser/diff-markers/item-with-attr.rs
@@ -0,0 +1,10 @@
+#[attribute]
+<<<<<<< HEAD //~ ERROR encountered diff marker
+fn foo() {}
+=======
+fn bar() {}
+>>>>>>> branch
+
+fn main() {
+    foo();
+}
diff --git a/src/test/ui/parser/diff-markers/item-with-attr.stderr b/src/test/ui/parser/diff-markers/item-with-attr.stderr
new file mode 100644
index 00000000000..850e2368e55
--- /dev/null
+++ b/src/test/ui/parser/diff-markers/item-with-attr.stderr
@@ -0,0 +1,18 @@
+error: encountered diff marker
+  --> $DIR/item-with-attr.rs:2:1
+   |
+LL | <<<<<<< HEAD
+   | ^^^^^^^ after this is the code before the merge
+LL | fn foo() {}
+LL | =======
+   | -------
+LL | fn bar() {}
+LL | >>>>>>> branch
+   | ^^^^^^^ above this are the incoming code changes
+   |
+   = help: if you're having merge conflicts after pulling new code, the top section is the code you already had and the bottom section is the remote code
+   = help: if you're in the middle of a rebase, the top section is the code being rebased onto and the bottom section is the code coming from the current commit being rebased
+   = note: for an explanation on these markers from the `git` documentation, visit <https://git-scm.com/book/en/v2/Git-Tools-Advanced-Merging#_checking_out_conflicts>
+
+error: aborting due to previous error
+
diff --git a/src/test/ui/parser/diff-markers/item.rs b/src/test/ui/parser/diff-markers/item.rs
new file mode 100644
index 00000000000..4ed36b7b42b
--- /dev/null
+++ b/src/test/ui/parser/diff-markers/item.rs
@@ -0,0 +1,9 @@
+<<<<<<< HEAD //~ ERROR encountered diff marker
+fn foo() {}
+=======
+fn bar() {}
+>>>>>>> branch
+
+fn main() {
+    foo();
+}
diff --git a/src/test/ui/parser/diff-markers/item.stderr b/src/test/ui/parser/diff-markers/item.stderr
new file mode 100644
index 00000000000..9ab3631a60e
--- /dev/null
+++ b/src/test/ui/parser/diff-markers/item.stderr
@@ -0,0 +1,18 @@
+error: encountered diff marker
+  --> $DIR/item.rs:1:1
+   |
+LL | <<<<<<< HEAD
+   | ^^^^^^^ after this is the code before the merge
+LL | fn foo() {}
+LL | =======
+   | -------
+LL | fn bar() {}
+LL | >>>>>>> branch
+   | ^^^^^^^ above this are the incoming code changes
+   |
+   = help: if you're having merge conflicts after pulling new code, the top section is the code you already had and the bottom section is the remote code
+   = help: if you're in the middle of a rebase, the top section is the code being rebased onto and the bottom section is the code coming from the current commit being rebased
+   = note: for an explanation on these markers from the `git` documentation, visit <https://git-scm.com/book/en/v2/Git-Tools-Advanced-Merging#_checking_out_conflicts>
+
+error: aborting due to previous error
+
diff --git a/src/test/ui/parser/diff-markers/statement.rs b/src/test/ui/parser/diff-markers/statement.rs
new file mode 100644
index 00000000000..e55d16d3bbb
--- /dev/null
+++ b/src/test/ui/parser/diff-markers/statement.rs
@@ -0,0 +1,15 @@
+trait T {
+    fn foo() {}
+    fn bar() {}
+}
+
+struct S;
+impl T for S {}
+
+fn main() {
+<<<<<<< HEAD //~ ERROR encountered diff marker
+    S::foo();
+=======
+    S::bar();
+>>>>>>> branch
+}
diff --git a/src/test/ui/parser/diff-markers/statement.stderr b/src/test/ui/parser/diff-markers/statement.stderr
new file mode 100644
index 00000000000..7ca2495b829
--- /dev/null
+++ b/src/test/ui/parser/diff-markers/statement.stderr
@@ -0,0 +1,18 @@
+error: encountered diff marker
+  --> $DIR/statement.rs:10:1
+   |
+LL | <<<<<<< HEAD
+   | ^^^^^^^ after this is the code before the merge
+LL |     S::foo();
+LL | =======
+   | -------
+LL |     S::bar();
+LL | >>>>>>> branch
+   | ^^^^^^^ above this are the incoming code changes
+   |
+   = help: if you're having merge conflicts after pulling new code, the top section is the code you already had and the bottom section is the remote code
+   = help: if you're in the middle of a rebase, the top section is the code being rebased onto and the bottom section is the code coming from the current commit being rebased
+   = note: for an explanation on these markers from the `git` documentation, visit <https://git-scm.com/book/en/v2/Git-Tools-Advanced-Merging#_checking_out_conflicts>
+
+error: aborting due to previous error
+
diff --git a/src/test/ui/parser/diff-markers/struct-expr.rs b/src/test/ui/parser/diff-markers/struct-expr.rs
new file mode 100644
index 00000000000..99d2fd662c6
--- /dev/null
+++ b/src/test/ui/parser/diff-markers/struct-expr.rs
@@ -0,0 +1,12 @@
+struct S {
+    x: u8,
+}
+fn main() {
+    let _ = S {
+<<<<<<< HEAD //~ ERROR encountered diff marker
+        x: 42,
+=======
+        x: 0,
+>>>>>>> branch
+    }
+}
diff --git a/src/test/ui/parser/diff-markers/struct-expr.stderr b/src/test/ui/parser/diff-markers/struct-expr.stderr
new file mode 100644
index 00000000000..d70476a9833
--- /dev/null
+++ b/src/test/ui/parser/diff-markers/struct-expr.stderr
@@ -0,0 +1,18 @@
+error: encountered diff marker
+  --> $DIR/struct-expr.rs:6:1
+   |
+LL | <<<<<<< HEAD
+   | ^^^^^^^ after this is the code before the merge
+LL |         x: 42,
+LL | =======
+   | -------
+LL |         x: 0,
+LL | >>>>>>> branch
+   | ^^^^^^^ above this are the incoming code changes
+   |
+   = help: if you're having merge conflicts after pulling new code, the top section is the code you already had and the bottom section is the remote code
+   = help: if you're in the middle of a rebase, the top section is the code being rebased onto and the bottom section is the code coming from the current commit being rebased
+   = note: for an explanation on these markers from the `git` documentation, visit <https://git-scm.com/book/en/v2/Git-Tools-Advanced-Merging#_checking_out_conflicts>
+
+error: aborting due to previous error
+
diff --git a/src/test/ui/parser/diff-markers/struct.rs b/src/test/ui/parser/diff-markers/struct.rs
new file mode 100644
index 00000000000..d26464d47bc
--- /dev/null
+++ b/src/test/ui/parser/diff-markers/struct.rs
@@ -0,0 +1,7 @@
+struct S {
+<<<<<<< HEAD //~ ERROR encountered diff marker
+    x: u8,
+=======
+    x: i8,
+>>>>>>> branch
+}
diff --git a/src/test/ui/parser/diff-markers/struct.stderr b/src/test/ui/parser/diff-markers/struct.stderr
new file mode 100644
index 00000000000..cc0b3da664e
--- /dev/null
+++ b/src/test/ui/parser/diff-markers/struct.stderr
@@ -0,0 +1,18 @@
+error: encountered diff marker
+  --> $DIR/struct.rs:2:1
+   |
+LL | <<<<<<< HEAD
+   | ^^^^^^^ after this is the code before the merge
+LL |     x: u8,
+LL | =======
+   | -------
+LL |     x: i8,
+LL | >>>>>>> branch
+   | ^^^^^^^ above this are the incoming code changes
+   |
+   = help: if you're having merge conflicts after pulling new code, the top section is the code you already had and the bottom section is the remote code
+   = help: if you're in the middle of a rebase, the top section is the code being rebased onto and the bottom section is the code coming from the current commit being rebased
+   = note: for an explanation on these markers from the `git` documentation, visit <https://git-scm.com/book/en/v2/Git-Tools-Advanced-Merging#_checking_out_conflicts>
+
+error: aborting due to previous error
+
diff --git a/src/test/ui/parser/diff-markers/trait-item.rs b/src/test/ui/parser/diff-markers/trait-item.rs
new file mode 100644
index 00000000000..3227c8212c9
--- /dev/null
+++ b/src/test/ui/parser/diff-markers/trait-item.rs
@@ -0,0 +1,14 @@
+trait T {
+<<<<<<< HEAD //~ ERROR encountered diff marker
+    fn foo() {}
+=======
+    fn bar() {}
+>>>>>>> branch
+}
+
+struct S;
+impl T for S {}
+
+fn main() {
+    S::foo();
+}
diff --git a/src/test/ui/parser/diff-markers/trait-item.stderr b/src/test/ui/parser/diff-markers/trait-item.stderr
new file mode 100644
index 00000000000..cdc19f8e076
--- /dev/null
+++ b/src/test/ui/parser/diff-markers/trait-item.stderr
@@ -0,0 +1,18 @@
+error: encountered diff marker
+  --> $DIR/trait-item.rs:2:1
+   |
+LL | <<<<<<< HEAD
+   | ^^^^^^^ after this is the code before the merge
+LL |     fn foo() {}
+LL | =======
+   | -------
+LL |     fn bar() {}
+LL | >>>>>>> branch
+   | ^^^^^^^ above this are the incoming code changes
+   |
+   = help: if you're having merge conflicts after pulling new code, the top section is the code you already had and the bottom section is the remote code
+   = help: if you're in the middle of a rebase, the top section is the code being rebased onto and the bottom section is the code coming from the current commit being rebased
+   = note: for an explanation on these markers from the `git` documentation, visit <https://git-scm.com/book/en/v2/Git-Tools-Advanced-Merging#_checking_out_conflicts>
+
+error: aborting due to previous error
+
diff --git a/src/test/ui/parser/diff-markers/tuple-struct.rs b/src/test/ui/parser/diff-markers/tuple-struct.rs
new file mode 100644
index 00000000000..7eec35c968d
--- /dev/null
+++ b/src/test/ui/parser/diff-markers/tuple-struct.rs
@@ -0,0 +1,7 @@
+struct S(
+<<<<<<< HEAD //~ ERROR encountered diff marker
+    u8,
+=======
+    i8,
+>>>>>>> branch
+);
diff --git a/src/test/ui/parser/diff-markers/tuple-struct.stderr b/src/test/ui/parser/diff-markers/tuple-struct.stderr
new file mode 100644
index 00000000000..d673db89837
--- /dev/null
+++ b/src/test/ui/parser/diff-markers/tuple-struct.stderr
@@ -0,0 +1,18 @@
+error: encountered diff marker
+  --> $DIR/tuple-struct.rs:2:1
+   |
+LL | <<<<<<< HEAD
+   | ^^^^^^^ after this is the code before the merge
+LL |     u8,
+LL | =======
+   | -------
+LL |     i8,
+LL | >>>>>>> branch
+   | ^^^^^^^ above this are the incoming code changes
+   |
+   = help: if you're having merge conflicts after pulling new code, the top section is the code you already had and the bottom section is the remote code
+   = help: if you're in the middle of a rebase, the top section is the code being rebased onto and the bottom section is the code coming from the current commit being rebased
+   = note: for an explanation on these markers from the `git` documentation, visit <https://git-scm.com/book/en/v2/Git-Tools-Advanced-Merging#_checking_out_conflicts>
+
+error: aborting due to previous error
+
diff --git a/src/test/ui/parser/diff-markers/use-statement.rs b/src/test/ui/parser/diff-markers/use-statement.rs
new file mode 100644
index 00000000000..6306243a514
--- /dev/null
+++ b/src/test/ui/parser/diff-markers/use-statement.rs
@@ -0,0 +1,9 @@
+use foo::{
+<<<<<<< HEAD //~ ERROR encountered diff marker
+    bar,
+=======
+    baz,
+>>>>>>> branch
+};
+
+fn main() {}
diff --git a/src/test/ui/parser/diff-markers/use-statement.stderr b/src/test/ui/parser/diff-markers/use-statement.stderr
new file mode 100644
index 00000000000..12e6f57dd50
--- /dev/null
+++ b/src/test/ui/parser/diff-markers/use-statement.stderr
@@ -0,0 +1,18 @@
+error: encountered diff marker
+  --> $DIR/use-statement.rs:2:1
+   |
+LL | <<<<<<< HEAD
+   | ^^^^^^^ after this is the code before the merge
+LL |     bar,
+LL | =======
+   | -------
+LL |     baz,
+LL | >>>>>>> branch
+   | ^^^^^^^ above this are the incoming code changes
+   |
+   = help: if you're having merge conflicts after pulling new code, the top section is the code you already had and the bottom section is the remote code
+   = help: if you're in the middle of a rebase, the top section is the code being rebased onto and the bottom section is the code coming from the current commit being rebased
+   = note: for an explanation on these markers from the `git` documentation, visit <https://git-scm.com/book/en/v2/Git-Tools-Advanced-Merging#_checking_out_conflicts>
+
+error: aborting due to previous error
+