compiletest: Stricter parsing for diagnostic kinds

src/tools/compiletest/src/errors.rs

@@ -3,7 +3,6 @@ use std::fs::File;
 use std::io::BufReader;
 use std::io::prelude::*;
 use std::path::Path;
-use std::str::FromStr;
 use std::sync::OnceLock;
 
 use regex::Regex;
@@ -18,30 +17,39 @@ pub enum ErrorKind {
     Warning,
 }
 
-impl FromStr for ErrorKind {
-    type Err = ();
-    fn from_str(s: &str) -> Result<Self, Self::Err> {
-        let s = s.to_uppercase();
-        let part0: &str = s.split(':').next().unwrap();
-        match part0 {
-            "HELP" => Ok(ErrorKind::Help),
-            "ERROR" => Ok(ErrorKind::Error),
-            "NOTE" => Ok(ErrorKind::Note),
-            "SUGGESTION" => Ok(ErrorKind::Suggestion),
-            "WARN" | "WARNING" => Ok(ErrorKind::Warning),
-            _ => Err(()),
+impl ErrorKind {
+    pub fn from_compiler_str(s: &str) -> ErrorKind {
+        match s {
+            "help" => ErrorKind::Help,
+            "error" | "error: internal compiler error" => ErrorKind::Error,
+            "note" | "failure-note" => ErrorKind::Note,
+            "warning" => ErrorKind::Warning,
+            _ => panic!("unexpected compiler diagnostic kind `{s}`"),
         }
     }
+
+    /// Either the canonical uppercase string, or some additional versions for compatibility.
+    /// FIXME: consider keeping only the canonical versions here.
+    fn from_user_str(s: &str) -> Option<ErrorKind> {
+        Some(match s {
+            "HELP" | "help" => ErrorKind::Help,
+            "ERROR" | "error" => ErrorKind::Error,
+            "NOTE" | "note" => ErrorKind::Note,
+            "SUGGESTION" => ErrorKind::Suggestion,
+            "WARN" | "WARNING" | "warn" | "warning" => ErrorKind::Warning,
+            _ => return None,
+        })
+    }
 }
 
 impl fmt::Display for ErrorKind {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
         match *self {
-            ErrorKind::Help => write!(f, "help message"),
-            ErrorKind::Error => write!(f, "error"),
-            ErrorKind::Note => write!(f, "note"),
-            ErrorKind::Suggestion => write!(f, "suggestion"),
-            ErrorKind::Warning => write!(f, "warning"),
+            ErrorKind::Help => write!(f, "HELP"),
+            ErrorKind::Error => write!(f, "ERROR"),
+            ErrorKind::Note => write!(f, "NOTE"),
+            ErrorKind::Suggestion => write!(f, "SUGGESTION"),
+            ErrorKind::Warning => write!(f, "WARN"),
         }
     }
 }
@@ -53,14 +61,18 @@ pub struct Error {
     /// `None` if not specified or unknown message kind.
     pub kind: Option<ErrorKind>,
     pub msg: String,
+    /// For some `Error`s, like secondary lines of multi-line diagnostics, line annotations
+    /// are not mandatory, even if they would otherwise be mandatory for primary errors.
+    /// Only makes sense for "actual" errors, not for "expected" errors.
+    pub require_annotation: bool,
 }
 
 impl Error {
     pub fn render_for_expected(&self) -> String {
         use colored::Colorize;
         format!(
             "{: <10}line {: >3}: {}",
-            self.kind.map(|kind| kind.to_string()).unwrap_or_default().to_uppercase(),
+            self.kind.map(|kind| kind.to_string()).unwrap_or_default(),
             self.line_num_str(),
             self.msg.cyan(),
         )
@@ -150,18 +162,12 @@ fn parse_expected(
     }
 
     // Get the part of the comment after the sigil (e.g. `~^^` or ~|).
-    let whole_match = captures.get(0).unwrap();
-    let (_, mut msg) = line.split_at(whole_match.end());
-
-    let first_word = msg.split_whitespace().next().expect("Encountered unexpected empty comment");
-
-    // If we find `//~ ERROR foo` or something like that, skip the first word.
-    let kind = first_word.parse::<ErrorKind>().ok();
-    if kind.is_some() {
-        msg = &msg.trim_start().split_at(first_word.len()).1;
-    }
-
-    let msg = msg.trim().to_owned();
+    let tag = captures.get(0).unwrap();
+    let rest = line[tag.end()..].trim_start();
+    let (kind_str, _) = rest.split_once(|c: char| !c.is_ascii_alphabetic()).unwrap_or((rest, ""));
+    let kind = ErrorKind::from_user_str(kind_str);
+    let untrimmed_msg = if kind.is_some() { &rest[kind_str.len()..] } else { rest };
+    let msg = untrimmed_msg.strip_prefix(':').unwrap_or(untrimmed_msg).trim().to_owned();
 
     let line_num_adjust = &captures["adjust"];
     let (follow_prev, line_num) = if line_num_adjust == "|" {
@@ -177,12 +183,12 @@ fn parse_expected(
     debug!(
         "line={:?} tag={:?} follow_prev={:?} kind={:?} msg={:?}",
         line_num,
-        whole_match.as_str(),
+        tag.as_str(),
         follow_prev,
         kind,
         msg
     );
-    Some((follow_prev, Error { line_num, kind, msg }))
+    Some((follow_prev, Error { line_num, kind, msg, require_annotation: true }))
 }
 
 #[cfg(test)]

src/tools/compiletest/src/json.rs

@@ -1,7 +1,6 @@
 //! These structs are a subset of the ones found in `rustc_errors::json`.
 
 use std::path::{Path, PathBuf};
-use std::str::FromStr;
 use std::sync::OnceLock;
 
 use regex::Regex;
@@ -142,43 +141,34 @@ pub fn extract_rendered(output: &str) -> String {
 }
 
 pub fn parse_output(file_name: &str, output: &str, proc_res: &ProcRes) -> Vec<Error> {
-    output.lines().flat_map(|line| parse_line(file_name, line, output, proc_res)).collect()
-}
-
-fn parse_line(file_name: &str, line: &str, output: &str, proc_res: &ProcRes) -> Vec<Error> {
-    // The compiler sometimes intermingles non-JSON stuff into the
-    // output.  This hack just skips over such lines. Yuck.
-    if line.starts_with('{') {
-        match serde_json::from_str::<Diagnostic>(line) {
-            Ok(diagnostic) => {
-                let mut expected_errors = vec![];
-                push_expected_errors(&mut expected_errors, &diagnostic, &[], file_name);
-                expected_errors
-            }
-            Err(error) => {
-                // Ignore the future compat report message - this is handled
-                // by `extract_rendered`
-                if serde_json::from_str::<FutureIncompatReport>(line).is_ok() {
-                    vec![]
-                } else {
-                    proc_res.fatal(
+    let mut errors = Vec::new();
+    for line in output.lines() {
+        // The compiler sometimes intermingles non-JSON stuff into the
+        // output.  This hack just skips over such lines. Yuck.
+        if line.starts_with('{') {
+            match serde_json::from_str::<Diagnostic>(line) {
+                Ok(diagnostic) => push_actual_errors(&mut errors, &diagnostic, &[], file_name),
+                Err(error) => {
+                    // Ignore the future compat report message - this is handled
+                    // by `extract_rendered`
+                    if serde_json::from_str::<FutureIncompatReport>(line).is_err() {
+                        proc_res.fatal(
                         Some(&format!(
-                            "failed to decode compiler output as json: \
-                         `{}`\nline: {}\noutput: {}",
+                            "failed to decode compiler output as json: `{}`\nline: {}\noutput: {}",
                             error, line, output
                         )),
                         || (),
                     );
+                    }
                 }
             }
         }
-    } else {
-        vec![]
     }
+    errors
 }
 
-fn push_expected_errors(
-    expected_errors: &mut Vec<Error>,
+fn push_actual_errors(
+    errors: &mut Vec<Error>,
     diagnostic: &Diagnostic,
     default_spans: &[&DiagnosticSpan],
     file_name: &str,
@@ -236,44 +226,47 @@ fn push_expected_errors(
         }
     };
 
-    // Convert multi-line messages into multiple expected
-    // errors. We expect to replace these with something
-    // more structured shortly anyhow.
+    // Convert multi-line messages into multiple errors.
+    // We expect to replace these with something more structured anyhow.
     let mut message_lines = diagnostic.message.lines();
-    if let Some(first_line) = message_lines.next() {
-        let ignore = |s| {
-            static RE: OnceLock<Regex> = OnceLock::new();
-            RE.get_or_init(|| {
-                Regex::new(r"aborting due to \d+ previous errors?|\d+ warnings? emitted").unwrap()
-            })
-            .is_match(s)
-        };
-
-        if primary_spans.is_empty() && !ignore(first_line) {
-            let msg = with_code(None, first_line);
-            let kind = ErrorKind::from_str(&diagnostic.level).ok();
-            expected_errors.push(Error { line_num: None, kind, msg });
-        } else {
-            for span in primary_spans {
-                let msg = with_code(Some(span), first_line);
-                let kind = ErrorKind::from_str(&diagnostic.level).ok();
-                expected_errors.push(Error { line_num: Some(span.line_start), kind, msg });
-            }
+    let kind = Some(ErrorKind::from_compiler_str(&diagnostic.level));
+    let first_line = message_lines.next().unwrap_or(&diagnostic.message);
+    if primary_spans.is_empty() {
+        static RE: OnceLock<Regex> = OnceLock::new();
+        let re_init =
+            || Regex::new(r"aborting due to \d+ previous errors?|\d+ warnings? emitted").unwrap();
+        errors.push(Error {
+            line_num: None,
+            kind,
+            msg: with_code(None, first_line),
+            require_annotation: diagnostic.level != "failure-note"
+                && !RE.get_or_init(re_init).is_match(first_line),
+        });
+    } else {
+        for span in primary_spans {
+            errors.push(Error {
+                line_num: Some(span.line_start),
+                kind,
+                msg: with_code(Some(span), first_line),
+                require_annotation: true,
+            });
         }
     }
     for next_line in message_lines {
         if primary_spans.is_empty() {
-            expected_errors.push(Error {
+            errors.push(Error {
                 line_num: None,
-                kind: None,
+                kind,
                 msg: with_code(None, next_line),
+                require_annotation: false,
             });
         } else {
             for span in primary_spans {
-                expected_errors.push(Error {
+                errors.push(Error {
                     line_num: Some(span.line_start),
-                    kind: None,
+                    kind,
                     msg: with_code(Some(span), next_line),
+                    require_annotation: false,
                 });
             }
         }
@@ -283,10 +276,11 @@ fn push_expected_errors(
     for span in primary_spans {
         if let Some(ref suggested_replacement) = span.suggested_replacement {
             for (index, line) in suggested_replacement.lines().enumerate() {
-                expected_errors.push(Error {
+                errors.push(Error {
                     line_num: Some(span.line_start + index),
                     kind: Some(ErrorKind::Suggestion),
                     msg: line.to_string(),
+                    require_annotation: true,
                 });
             }
         }
@@ -295,39 +289,41 @@ fn push_expected_errors(
     // Add notes for the backtrace
     for span in primary_spans {
         if let Some(frame) = &span.expansion {
-            push_backtrace(expected_errors, frame, file_name);
+            push_backtrace(errors, frame, file_name);
         }
     }
 
     // Add notes for any labels that appear in the message.
     for span in spans_in_this_file.iter().filter(|span| span.label.is_some()) {
-        expected_errors.push(Error {
+        errors.push(Error {
             line_num: Some(span.line_start),
             kind: Some(ErrorKind::Note),
             msg: span.label.clone().unwrap(),
+            require_annotation: true,
         });
     }
 
     // Flatten out the children.
     for child in &diagnostic.children {
-        push_expected_errors(expected_errors, child, primary_spans, file_name);
+        push_actual_errors(errors, child, primary_spans, file_name);
     }
 }
 
 fn push_backtrace(
-    expected_errors: &mut Vec<Error>,
+    errors: &mut Vec<Error>,
     expansion: &DiagnosticSpanMacroExpansion,
     file_name: &str,
 ) {
     if Path::new(&expansion.span.file_name) == Path::new(&file_name) {
-        expected_errors.push(Error {
+        errors.push(Error {
             line_num: Some(expansion.span.line_start),
             kind: Some(ErrorKind::Note),
             msg: format!("in this expansion of {}", expansion.macro_decl_name),
+            require_annotation: true,
         });
     }
 
     if let Some(previous_expansion) = &expansion.span.expansion {
-        push_backtrace(expected_errors, previous_expansion, file_name);
+        push_backtrace(errors, previous_expansion, file_name);
     }
 }

src/tools/compiletest/src/runtest.rs

@@ -810,7 +810,7 @@ impl<'test> TestCx<'test> {
         expect_help: bool,
         expect_note: bool,
     ) -> bool {
-        !actual_error.msg.is_empty()
+        actual_error.require_annotation
             && match actual_error.kind {
                 Some(ErrorKind::Help) => expect_help,
                 Some(ErrorKind::Note) => expect_note,

tests/incremental/circular-dependencies.rs

@@ -15,6 +15,7 @@ pub struct Foo;
 
 pub fn consume_foo(_: Foo) {}
 //[cfail2]~^ NOTE function defined here
+//[cfail2]~| NOTE
 
 pub fn produce_foo() -> Foo {
     Foo

tests/ui/async-await/issue-70818.rs

@@ -2,7 +2,7 @@
 
 use std::future::Future;
 fn foo<T: Send, U>(ty: T, ty1: U) -> impl Future<Output = (T, U)> + Send {
-    //~^ Error future cannot be sent between threads safely
+    //~^ ERROR future cannot be sent between threads safely
     async { (ty, ty1) }
 }
 

tests/ui/async-await/issue-71137.rs

@@ -19,5 +19,5 @@ async fn wrong_mutex() {
 }
 
 fn main() {
-  fake_spawn(wrong_mutex()); //~ Error future cannot be sent between threads safely
+  fake_spawn(wrong_mutex()); //~ ERROR future cannot be sent between threads safely
 }

tests/ui/const-generics/defaults/mismatch.rs

@@ -5,18 +5,18 @@ pub struct Example4<const N: usize = 13, const M: usize = 4>;
 
 fn main() {
     let e: Example<13> = ();
-    //~^ Error: mismatched types
+    //~^ ERROR mismatched types
     //~| expected struct `Example`
     let e: Example2<u32, 13> = ();
-    //~^ Error: mismatched types
+    //~^ ERROR mismatched types
     //~| expected struct `Example2`
     let e: Example3<13, u32> = ();
-    //~^ Error: mismatched types
+    //~^ ERROR mismatched types
     //~| expected struct `Example3`
     let e: Example3<7> = ();
-    //~^ Error: mismatched types
+    //~^ ERROR mismatched types
     //~| expected struct `Example3<7>`
     let e: Example4<7> = ();
-    //~^ Error: mismatched types
+    //~^ ERROR mismatched types
     //~| expected struct `Example4<7>`
 }

tests/ui/const-generics/dont-evaluate-array-len-on-err-1.rs

@@ -13,7 +13,7 @@ trait Foo {
         [Adt; std::mem::size_of::<Self::Assoc>()]: ,
     {
         <[Adt; std::mem::size_of::<Self::Assoc>()] as Foo>::bar()
-        //~^ Error: the trait bound
+        //~^ ERROR the trait bound
     }
 
     fn bar() {}

tests/ui/const-generics/generic_const_exprs/abstract-const-as-cast-3.rs

@@ -15,15 +15,15 @@ where
 
     // errors are bad but seems to be pre-existing issue #86198
     assert_impl::<HasCastInTraitImpl<{ N + 1 }, { N as u128 }>>();
-    //~^ Error: mismatched types
-    //~^^ Error: unconstrained generic constant
+    //~^ ERROR mismatched types
+    //~^^ ERROR unconstrained generic constant
     assert_impl::<HasCastInTraitImpl<{ N + 1 }, { N as _ }>>();
-    //~^ Error: mismatched types
-    //~^^ Error: unconstrained generic constant
+    //~^ ERROR mismatched types
+    //~^^ ERROR unconstrained generic constant
     assert_impl::<HasCastInTraitImpl<13, { 12 as u128 }>>();
-    //~^ Error: mismatched types
+    //~^ ERROR mismatched types
     assert_impl::<HasCastInTraitImpl<14, 13>>();
-    //~^ Error: mismatched types
+    //~^ ERROR mismatched types
 }
 pub fn use_trait_impl_2<const N: usize>()
 where
@@ -33,15 +33,15 @@ where
 
     // errors are bad but seems to be pre-existing issue #86198
     assert_impl::<HasCastInTraitImpl<{ N + 1 }, { N as u128 }>>();
-    //~^ Error: mismatched types
-    //~^^ Error: unconstrained generic constant
+    //~^ ERROR mismatched types
+    //~^^ ERROR unconstrained generic constant
     assert_impl::<HasCastInTraitImpl<{ N + 1 }, { N as _ }>>();
-    //~^ Error: mismatched types
-    //~^^ Error: unconstrained generic constant
+    //~^ ERROR mismatched types
+    //~^^ ERROR unconstrained generic constant
     assert_impl::<HasCastInTraitImpl<13, { 12 as u128 }>>();
-    //~^ Error: mismatched types
+    //~^ ERROR mismatched types
     assert_impl::<HasCastInTraitImpl<14, 13>>();
-    //~^ Error: mismatched types
+    //~^ ERROR mismatched types
 }
 
 fn main() {}

tests/ui/const-generics/generic_const_exprs/issue-72787.rs

@@ -9,8 +9,8 @@ pub trait True {}
 
 impl<const LHS: u32, const RHS: u32> True for IsLessOrEqual<LHS, RHS> where
     Condition<{ LHS <= RHS }>: True
-//[min]~^ Error generic parameters may not be used in const operations
-//[min]~| Error generic parameters may not be used in const operations
+//[min]~^ ERROR generic parameters may not be used in const operations
+//[min]~| ERROR generic parameters may not be used in const operations
 {
 }
 impl True for Condition<true> {}
@@ -21,8 +21,8 @@ where
     IsLessOrEqual<I, 8>: True,
     IsLessOrEqual<J, 8>: True,
     IsLessOrEqual<{ 8 - I }, { 8 - J }>: True,
-//[min]~^ Error generic parameters may not be used in const operations
-//[min]~| Error generic parameters may not be used in const operations
+//[min]~^ ERROR generic parameters may not be used in const operations
+//[min]~| ERROR generic parameters may not be used in const operations
     // Condition<{ 8 - I <= 8 - J }>: True,
 {
     fn print() {

tests/ui/const-generics/generic_const_exprs/issue-79518-default_trait_method_normalization.rs

@@ -14,7 +14,7 @@ trait Foo {
         [(); std::mem::size_of::<Self::Assoc>()]: ,
     {
         Self::AssocInstance == [(); std::mem::size_of::<Self::Assoc>()];
-        //~^ Error: mismatched types
+        //~^ ERROR mismatched types
     }
 }
 

tests/ui/consts/const_in_pattern/reject_non_structural.rs

@@ -93,6 +93,7 @@ fn main() {
     //~| NOTE constant of non-structural type
 
     trait Trait: Sized { const ASSOC: Option<Self>; } //~ NOTE constant defined here
+                                                      //~^ NOTE
     impl Trait for NoDerive { const ASSOC: Option<NoDerive> = Some(NoDerive); }
     match Some(NoDerive) { NoDerive::ASSOC => dbg!(NoDerive::ASSOC), _ => panic!("whoops"), };
     //~^ ERROR constant of non-structural type `NoDerive` in a pattern

tests/ui/consts/const_in_pattern/reject_non_structural.stderr

@@ -118,14 +118,14 @@ LL | impl PartialEq for NoDerive { fn eq(&self, _: &Self) -> bool { false } }
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 error: constant of non-structural type `NoDerive` in a pattern
-  --> $DIR/reject_non_structural.rs:97:28
+  --> $DIR/reject_non_structural.rs:98:28
    |
 LL | struct NoDerive;
    | --------------- `NoDerive` must be annotated with `#[derive(PartialEq)]` to be usable in patterns
 ...
 LL |     trait Trait: Sized { const ASSOC: Option<Self>; }
    |     ------------------   ------------------------- constant defined here
-LL |     impl Trait for NoDerive { const ASSOC: Option<NoDerive> = Some(NoDerive); }
+...
 LL |     match Some(NoDerive) { NoDerive::ASSOC => dbg!(NoDerive::ASSOC), _ => panic!("whoops"), };
    |                            ^^^^^^^^^^^^^^^ constant of non-structural type
    |
@@ -136,7 +136,7 @@ LL | impl PartialEq for NoDerive { fn eq(&self, _: &Self) -> bool { false } }
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 error: constant of non-structural type `NoDerive` in a pattern
-  --> $DIR/reject_non_structural.rs:102:28
+  --> $DIR/reject_non_structural.rs:103:28
    |
 LL | struct NoDerive;
    | --------------- `NoDerive` must be annotated with `#[derive(PartialEq)]` to be usable in patterns
@@ -153,7 +153,7 @@ LL | impl PartialEq for NoDerive { fn eq(&self, _: &Self) -> bool { false } }
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 error: constant of non-structural type `NoDerive` in a pattern
-  --> $DIR/reject_non_structural.rs:107:29
+  --> $DIR/reject_non_structural.rs:108:29
    |
 LL | struct NoDerive;
    | --------------- `NoDerive` must be annotated with `#[derive(PartialEq)]` to be usable in patterns

tests/ui/fn/param-mismatch-foreign.rs

@@ -1,6 +1,7 @@
 extern "C" {
     fn foo(x: i32, y: u32, z: i32);
     //~^ NOTE function defined here
+    //~| NOTE
 }
 
 fn main() {

tests/ui/fn/param-mismatch-foreign.stderr

@@ -1,5 +1,5 @@
 error[E0061]: this function takes 3 arguments but 2 arguments were supplied
-  --> $DIR/param-mismatch-foreign.rs:7:5
+  --> $DIR/param-mismatch-foreign.rs:8:5
    |
 LL |     foo(1i32, 2i32);
    |     ^^^       ---- argument #2 of type `u32` is missing

tests/ui/impl-trait/impl-generic-mismatch.rs

@@ -6,7 +6,7 @@ trait Foo {
 
 impl Foo for () {
     fn foo<U: Debug>(&self, _: &U) { }
-    //~^ Error method `foo` has incompatible signature for trait
+    //~^ ERROR method `foo` has incompatible signature for trait
 }
 
 trait Bar {
@@ -15,7 +15,7 @@ trait Bar {
 
 impl Bar for () {
     fn bar(&self, _: &impl Debug) { }
-    //~^ Error method `bar` has incompatible signature for trait
+    //~^ ERROR method `bar` has incompatible signature for trait
 }
 
 trait Baz {
@@ -24,7 +24,7 @@ trait Baz {
 
 impl Baz for () {
     fn baz<T: Debug>(&self, _: &impl Debug, _: &T) { }
-    //~^ Error method `baz` has incompatible signature for trait
+    //~^ ERROR method `baz` has incompatible signature for trait
 }
 
 // With non-local trait (#49841):
@@ -35,7 +35,7 @@ struct X;
 
 impl Hash for X {
     fn hash(&self, hasher: &mut impl Hasher) {}
-    //~^ Error method `hash` has incompatible signature for trait
+    //~^ ERROR method `hash` has incompatible signature for trait
 }
 
 fn main() {}

tests/ui/mismatched_types/assignment-operator-unimplemented.rs

@@ -3,5 +3,5 @@ struct Foo;
 fn main() {
   let mut a = Foo;
   let ref b = Foo;
-  a += *b; //~ Error: binary assignment operation `+=` cannot be applied to type `Foo`
+  a += *b; //~ ERROR binary assignment operation `+=` cannot be applied to type `Foo`
 }

tests/ui/mismatched_types/similar_paths_primitive.rs

@@ -4,8 +4,9 @@ struct bool; //~ NOTE the other `bool` is defined in the current crate
 struct str; //~ NOTE the other `str` is defined in the current crate
 
 fn foo(_: bool) {} //~ NOTE function defined here
+                   //~^ NOTE
 fn bar(_: &str) {} //~ NOTE function defined here
-
+                   //~^ NOTE
 fn main() {
     foo(true);
     //~^ ERROR mismatched types [E0308]

tests/ui/mismatched_types/similar_paths_primitive.stderr

@@ -1,5 +1,5 @@
 error[E0308]: mismatched types
-  --> $DIR/similar_paths_primitive.rs:10:9
+  --> $DIR/similar_paths_primitive.rs:11:9
    |
 LL |     foo(true);
    |     --- ^^^^ expected `bool`, found a different `bool`
@@ -20,7 +20,7 @@ LL | fn foo(_: bool) {}
    |    ^^^ -------
 
 error[E0308]: mismatched types
-  --> $DIR/similar_paths_primitive.rs:16:9
+  --> $DIR/similar_paths_primitive.rs:17:9
    |
 LL |     bar("hello");
    |     --- ^^^^^^^ expected `str`, found a different `str`
@@ -35,7 +35,7 @@ note: the other `str` is defined in the current crate
 LL | struct str;
    | ^^^^^^^^^^
 note: function defined here
-  --> $DIR/similar_paths_primitive.rs:7:4
+  --> $DIR/similar_paths_primitive.rs:8:4
    |
 LL | fn bar(_: &str) {}
    |    ^^^ -------

tests/ui/modules/issue-107649.rs

@@ -102,5 +102,5 @@ fn main() {
     ();
     ();
     ();
-    dbg!(lib::Dummy); //~ Error: `Dummy` doesn't implement `Debug`
+    dbg!(lib::Dummy); //~ ERROR `Dummy` doesn't implement `Debug`
 }

tests/ui/moves/nested-loop-moved-value-wrong-continue.rs

@@ -9,6 +9,8 @@ fn foo() {
     //~| NOTE inside of this loop
     //~| HELP consider moving the expression out of the loop
     //~| NOTE in this expansion of desugaring of `for` loop
+    //~| NOTE
+    //~| NOTE
         baz.push(foo);
         //~^ NOTE value moved here
         //~| HELP consider cloning the value
@@ -30,17 +32,19 @@ fn main() {
     for foo in foos {
     //~^ NOTE this reinitialization might get skipped
     //~| NOTE move occurs because `foo` has type `String`
+    //~| NOTE
         for bar in &bars {
         //~^ NOTE inside of this loop
         //~| HELP consider moving the expression out of the loop
         //~| NOTE in this expansion of desugaring of `for` loop
+        //~| NOTE
             if foo == *bar {
                 baz.push(foo);
                 //~^ NOTE value moved here
                 //~| HELP consider cloning the value
                 continue;
                 //~^ NOTE verify that your loop breaking logic is correct
-                //~| NOTE this `continue` advances the loop at line 33
+                //~| NOTE this `continue` advances the loop at line 36
             }
         }
         qux.push(foo);

tests/ui/moves/nested-loop-moved-value-wrong-continue.stderr

@@ -1,5 +1,5 @@
 error[E0382]: use of moved value: `foo`
-  --> $DIR/nested-loop-moved-value-wrong-continue.rs:19:14
+  --> $DIR/nested-loop-moved-value-wrong-continue.rs:21:14
    |
 LL |     for foo in foos { for bar in &bars { if foo == *bar {
    |         ---           ---------------- inside of this loop
@@ -14,13 +14,13 @@ LL |     qux.push(foo);
    |              ^^^ value used here after move
    |
 note: verify that your loop breaking logic is correct
-  --> $DIR/nested-loop-moved-value-wrong-continue.rs:15:9
+  --> $DIR/nested-loop-moved-value-wrong-continue.rs:17:9
    |
 LL |     for foo in foos { for bar in &bars { if foo == *bar {
    |     ---------------   ----------------
 ...
 LL |         continue;
-   |         ^^^^^^^^ this `continue` advances the loop at $DIR/nested-loop-moved-value-wrong-continue.rs:6:23: 18:8
+   |         ^^^^^^^^ this `continue` advances the loop at $DIR/nested-loop-moved-value-wrong-continue.rs:6:23: 20:8
 help: consider moving the expression out of the loop so it is only moved once
    |
 LL ~     for foo in foos { let mut value = baz.push(foo);
@@ -36,7 +36,7 @@ LL |         baz.push(foo.clone());
    |                     ++++++++
 
 error[E0382]: use of moved value: `foo`
-  --> $DIR/nested-loop-moved-value-wrong-continue.rs:46:18
+  --> $DIR/nested-loop-moved-value-wrong-continue.rs:50:18
    |
 LL |     for foo in foos {
    |         ---
@@ -54,7 +54,7 @@ LL |         qux.push(foo);
    |                  ^^^ value used here after move
    |
 note: verify that your loop breaking logic is correct
-  --> $DIR/nested-loop-moved-value-wrong-continue.rs:41:17
+  --> $DIR/nested-loop-moved-value-wrong-continue.rs:45:17
    |
 LL |     for foo in foos {
    |     ---------------
@@ -63,7 +63,7 @@ LL |         for bar in &bars {
    |         ----------------
 ...
 LL |                 continue;
-   |                 ^^^^^^^^ this `continue` advances the loop at line 33
+   |                 ^^^^^^^^ this `continue` advances the loop at line 36
 help: consider moving the expression out of the loop so it is only moved once
    |
 LL ~         let mut value = baz.push(foo);

tests/ui/parallel-rustc/cache-after-waiting-issue-111528.rs

@@ -10,7 +10,7 @@ pub fn a() {
 
 #[export_name="fail"]
 pub fn b() {
-//~^ Error symbol `fail` is already defined
+//~^ ERROR symbol `fail` is already defined
 }
 
 fn main() {}

tests/ui/parser/issues/issue-87217-keyword-order/const-async-const.rs

@@ -10,5 +10,6 @@ const async const fn test() {}
 //~| ERROR functions cannot be both `const` and `async`
 //~| NOTE `const` because of this
 //~| NOTE `async` because of this
+//~| NOTE
 
 fn main() {}

tests/ui/parser/issues/issue-87217-keyword-order/several-kw-jump.rs

@@ -15,5 +15,6 @@ async unsafe const fn test() {}
 //~| ERROR functions cannot be both `const` and `async`
 //~| NOTE `const` because of this
 //~| NOTE `async` because of this
+//~| NOTE
 
 fn main() {}

tests/ui/proc-macro/issue-91800.rs

@@ -6,11 +6,14 @@ extern crate issue_91800_macro;
 #[derive(MyTrait)]
 //~^ ERROR macros that expand to items must be delimited with braces or followed by a semicolon
 //~| ERROR proc-macro derive produced unparsable tokens
+//~| ERROR
 #[attribute_macro]
 //~^ ERROR macros that expand to items must be delimited with braces or followed by a semicolon
+//~| ERROR
 struct MyStruct;
 
 fn_macro! {}
 //~^ ERROR macros that expand to items must be delimited with braces or followed by a semicolon
+//~| ERROR
 
 fn main() {}

tests/ui/proc-macro/issue-91800.stderr

@@ -21,31 +21,31 @@ LL | #[derive(MyTrait)]
    = note: this error originates in the derive macro `MyTrait` (in Nightly builds, run with -Z macro-backtrace for more info)
 
 error: macros that expand to items must be delimited with braces or followed by a semicolon
-  --> $DIR/issue-91800.rs:9:1
+  --> $DIR/issue-91800.rs:10:1
    |
 LL | #[attribute_macro]
    | ^^^^^^^^^^^^^^^^^^
    |
    = note: this error originates in the attribute macro `attribute_macro` (in Nightly builds, run with -Z macro-backtrace for more info)
 
 error: 
-  --> $DIR/issue-91800.rs:9:1
+  --> $DIR/issue-91800.rs:10:1
    |
 LL | #[attribute_macro]
    | ^^^^^^^^^^^^^^^^^^
    |
    = note: this error originates in the attribute macro `attribute_macro` (in Nightly builds, run with -Z macro-backtrace for more info)
 
 error: macros that expand to items must be delimited with braces or followed by a semicolon
-  --> $DIR/issue-91800.rs:13:1
+  --> $DIR/issue-91800.rs:15:1
    |
 LL | fn_macro! {}
    | ^^^^^^^^^^^^
    |
    = note: this error originates in the macro `fn_macro` (in Nightly builds, run with -Z macro-backtrace for more info)
 
 error: 
-  --> $DIR/issue-91800.rs:13:1
+  --> $DIR/issue-91800.rs:15:1
    |
 LL | fn_macro! {}
    | ^^^^^^^^^^^^

tests/ui/resolve/typo-suggestion-for-variable-with-name-similar-to-struct-field.rs

@@ -4,15 +4,15 @@ struct A {
 
 impl A {
     fn new(cofig: String) -> Self {
-        Self { config } //~ Error cannot find value `config` in this scope
+        Self { config } //~ ERROR cannot find value `config` in this scope
     }
 
     fn do_something(cofig: String) {
-        println!("{config}"); //~ Error cannot find value `config` in this scope
+        println!("{config}"); //~ ERROR cannot find value `config` in this scope
     }
 
     fn self_is_available(self, cofig: String) {
-        println!("{config}"); //~ Error cannot find value `config` in this scope
+        println!("{config}"); //~ ERROR cannot find value `config` in this scope
     }
 }
 

tests/ui/suggestions/issue-103646.rs

@@ -5,7 +5,7 @@ trait Cat {
 fn uwu<T: Cat>(c: T) {
     c.nya();
     //~^ ERROR no method named `nya` found for type parameter `T` in the current scope
-    //~| Suggestion T::nya()
+    //~| SUGGESTION T::nya()
 }
 
 fn main() {}

tests/ui/type-alias-impl-trait/issue-53598.rs

@@ -17,7 +17,7 @@ impl Foo for S2 {
     type Item = impl Debug;
 
     fn foo<T: Debug>(_: T) -> Self::Item {
-        //~^ Error type parameter `T` is part of concrete type but not used in parameter list for the `impl Trait` type alias
+        //~^ ERROR type parameter `T` is part of concrete type but not used in parameter list for the `impl Trait` type alias
         S::<T>(Default::default())
     }
 }