fix: fix CI errors

13 files changed, 18 insertions, 2 deletions

diff --git a/src/test/ui/feature-gates/stability-attribute-consistency.stderr b/src/test/ui/feature-gates/stability-attribute-consistency.stderr
index d49b44c8a35..1b93d3c9637 100644
--- a/src/test/ui/feature-gates/stability-attribute-consistency.stderr
+++ b/src/test/ui/feature-gates/stability-attribute-consistency.stderr
@@ -12,3 +12,4 @@ LL | #[unstable(feature = "foo", issue = "none")]
 
 error: aborting due to 2 previous errors
 
+For more information about this error, try `rustc --explain E0711`.
diff --git a/src/test/ui/stability-attribute/stability-attribute-sanity.stderr b/src/test/ui/stability-attribute/stability-attribute-sanity.stderr
index 079230b2a31..89a8425f5e7 100644
--- a/src/test/ui/stability-attribute/stability-attribute-sanity.stderr
+++ b/src/test/ui/stability-attribute/stability-attribute-sanity.stderr
@@ -132,5 +132,5 @@ LL | #[stable(feature = "a", since = "1.0.0")]
 
 error: aborting due to 20 previous errors
 
-Some errors have detailed explanations: E0539, E0541, E0542, E0543, E0544, E0546, E0547, E0549.
+Some errors have detailed explanations: E0539, E0541, E0542, E0543, E0544, E0546, E0547, E0549, E0711.
 For more information about an error, try `rustc --explain E0539`.
diff --git a/src/test/ui/variance/variance-associated-consts.stderr b/src/test/ui/variance/variance-associated-consts.stderr
index 219f5bca9e3..f9732d02cb2 100644
--- a/src/test/ui/variance/variance-associated-consts.stderr
+++ b/src/test/ui/variance/variance-associated-consts.stderr
@@ -6,3 +6,4 @@ LL | struct Foo<T: Trait> {
 
 error: aborting due to previous error
 
+For more information about this error, try `rustc --explain E0208`.
diff --git a/src/test/ui/variance/variance-associated-types.stderr b/src/test/ui/variance/variance-associated-types.stderr
index 94f770eda33..5ce62884e1d 100644
--- a/src/test/ui/variance/variance-associated-types.stderr
+++ b/src/test/ui/variance/variance-associated-types.stderr
@@ -12,3 +12,4 @@ LL | struct Bar<'a, T : Trait<'a>> {
 
 error: aborting due to 2 previous errors
 
+For more information about this error, try `rustc --explain E0208`.
diff --git a/src/test/ui/variance/variance-object-types.stderr b/src/test/ui/variance/variance-object-types.stderr
index ceee53aff10..1c3c1a6d1f2 100644
--- a/src/test/ui/variance/variance-object-types.stderr
+++ b/src/test/ui/variance/variance-object-types.stderr
@@ -6,3 +6,4 @@ LL | struct Foo<'a> {
 
 error: aborting due to previous error
 
+For more information about this error, try `rustc --explain E0208`.
diff --git a/src/test/ui/variance/variance-regions-direct.stderr b/src/test/ui/variance/variance-regions-direct.stderr
index 25fb2273215..27d69b6e825 100644
--- a/src/test/ui/variance/variance-regions-direct.stderr
+++ b/src/test/ui/variance/variance-regions-direct.stderr
@@ -42,3 +42,4 @@ LL | enum Test8<'a, 'b, 'c:'b> {
 
 error: aborting due to 7 previous errors
 
+For more information about this error, try `rustc --explain E0208`.
diff --git a/src/test/ui/variance/variance-regions-indirect.stderr b/src/test/ui/variance/variance-regions-indirect.stderr
index fc52492d7ef..535e97db3fb 100644
--- a/src/test/ui/variance/variance-regions-indirect.stderr
+++ b/src/test/ui/variance/variance-regions-indirect.stderr
@@ -30,3 +30,4 @@ LL | struct Derived4<'a, 'b, 'c:'b> {
 
 error: aborting due to 5 previous errors
 
+For more information about this error, try `rustc --explain E0208`.
diff --git a/src/test/ui/variance/variance-trait-bounds.stderr b/src/test/ui/variance/variance-trait-bounds.stderr
index e3ef339f423..3f6ca62a640 100644
--- a/src/test/ui/variance/variance-trait-bounds.stderr
+++ b/src/test/ui/variance/variance-trait-bounds.stderr
@@ -24,3 +24,4 @@ LL | struct TestBox<U,T:Getter<U>+Setter<U>> {
 
 error: aborting due to 4 previous errors
 
+For more information about this error, try `rustc --explain E0208`.
diff --git a/src/test/ui/variance/variance-trait-object-bound.stderr b/src/test/ui/variance/variance-trait-object-bound.stderr
index c86cf1f82b4..9a2c924b96a 100644
--- a/src/test/ui/variance/variance-trait-object-bound.stderr
+++ b/src/test/ui/variance/variance-trait-object-bound.stderr
@@ -6,3 +6,4 @@ LL | struct TOption<'a> {
 
 error: aborting due to previous error
 
+For more information about this error, try `rustc --explain E0208`.
diff --git a/src/test/ui/variance/variance-types-bounds.stderr b/src/test/ui/variance/variance-types-bounds.stderr
index dbe8af75d51..523763b8a07 100644
--- a/src/test/ui/variance/variance-types-bounds.stderr
+++ b/src/test/ui/variance/variance-types-bounds.stderr
@@ -30,3 +30,4 @@ LL | struct TestObject<A, R> {
 
 error: aborting due to 5 previous errors
 
+For more information about this error, try `rustc --explain E0208`.
diff --git a/src/test/ui/variance/variance-types.stderr b/src/test/ui/variance/variance-types.stderr
index 8358b18b73c..5a5aaecffc5 100644
--- a/src/test/ui/variance/variance-types.stderr
+++ b/src/test/ui/variance/variance-types.stderr
@@ -36,3 +36,4 @@ LL | enum Enum<A,B,C> {
 
 error: aborting due to 6 previous errors
 
+For more information about this error, try `rustc --explain E0208`.
diff --git a/src/tools/tidy/src/error_codes.rs b/src/tools/tidy/src/error_codes.rs
index 8d70335a9e7..9aacc07e0ab 100644
--- a/src/tools/tidy/src/error_codes.rs
+++ b/src/tools/tidy/src/error_codes.rs
@@ -27,7 +27,8 @@ const ERROR_DOCS_PATH: &str = "compiler/rustc_error_codes/src/error_codes/";
 const ERROR_TESTS_PATH: &str = "src/test/ui/error-codes/";
 
 // Error codes that (for some reason) can't have a doctest in their explanation. Error codes are still expected to provide a code example, even if untested.
-const IGNORE_DOCTEST_CHECK: &[&str] = &["E0464", "E0570", "E0601", "E0602"];
+const IGNORE_DOCTEST_CHECK: &[&str] =
+    &["E0208", "E0464", "E0570", "E0601", "E0602", "E0640", "E0717"];
 
 // Error codes that don't yet have a UI test. This list will eventually be removed.
 const IGNORE_UI_TEST_CHECK: &[&str] = &[
@@ -193,6 +194,7 @@ fn check_error_codes_docs(
                 "warning: Error code `{err_code}` doesn't have a code example, all error codes are expected to have one \
                 (even if untested)."
             );
+            return;
         }
 
         let test_ignored = IGNORE_DOCTEST_CHECK.contains(&&err_code);
diff --git a/src/tools/tidy/src/style.rs b/src/tools/tidy/src/style.rs
index f409a86db26..2cf8f5c7ca3 100644
--- a/src/tools/tidy/src/style.rs
+++ b/src/tools/tidy/src/style.rs
@@ -64,6 +64,8 @@ const PROBLEMATIC_CONSTS: &[u32] = &[
     3735927486, 3735932941, 4027431614, 4276992702,
 ];
 
+const INTERNAL_COMPILER_DOCS_LINE: &str = "#### This error code is internal to the compiler and will not be emitted with normal Rust code.";
+
 /// Parser states for `line_is_url`.
 #[derive(Clone, Copy, PartialEq)]
 #[allow(non_camel_case_types)]
@@ -132,6 +134,8 @@ fn long_line_is_ok(extension: &str, is_error_code: bool, max_columns: usize, lin
         "ftl" => true,
         // non-error code markdown is allowed to be any length
         "md" if !is_error_code => true,
+        // HACK(Ezrashaw): there is no way to split a markdown header over multiple lines
+        "md" if line == INTERNAL_COMPILER_DOCS_LINE => true,
         _ => line_is_url(is_error_code, max_columns, line) || should_ignore(line),
     }
 }