Auto merge of rust-lang#113622 - RickleAndMortimer:issue-113184-fix, r=oli-obk

bors · bors · commit 0646a5d1aa37 · 2023-07-20T03:18:41.000Z
add links to query documentation for E0391 This PR adds links to https://rustc-dev-guide.rust-lang.org/overview.html#queries and https://rustc-dev-guide.rust-lang.org/query.html for the rustc --explain E0391 and within the compiler error itself. Fixes: rust-lang#113184
diff --git a/compiler/rustc_error_codes/src/error_codes/E0391.md b/compiler/rustc_error_codes/src/error_codes/E0391.md
@@ -14,3 +14,6 @@ trait SecondTrait : FirstTrait {
 
 The previous example contains a circular dependency between two traits:
 `FirstTrait` depends on `SecondTrait` which itself depends on `FirstTrait`.
+
+See https://rustc-dev-guide.rust-lang.org/overview.html#queries and
+https://rustc-dev-guide.rust-lang.org/query.html for more information.
diff --git a/compiler/rustc_query_system/messages.ftl b/compiler/rustc_query_system/messages.ftl
@@ -1,4 +1,5 @@
 query_system_cycle = cycle detected when {$stack_bottom}
+    .note = see https://rustc-dev-guide.rust-lang.org/overview.html#queries and https://rustc-dev-guide.rust-lang.org/query.html for more information
 
 query_system_cycle_recursive_trait_alias = trait aliases cannot be recursive
 
diff --git a/compiler/rustc_query_system/src/error.rs b/compiler/rustc_query_system/src/error.rs
@@ -57,6 +57,8 @@ pub struct Cycle {
     pub alias: Option<Alias>,
     #[subdiagnostic]
     pub cycle_usage: Option<CycleUsage>,
+    #[note]
+    pub note_span: (),
 }
 
 #[derive(Diagnostic)]
diff --git a/compiler/rustc_query_system/src/query/job.rs b/compiler/rustc_query_system/src/query/job.rs
@@ -608,6 +608,7 @@ pub(crate) fn report_cycle<'a, D: DepKind>(
         alias,
         cycle_usage: cycle_usage,
         stack_count,
+        note_span: (),
     };
 
     cycle_diag.into_diagnostic(&sess.parse_sess.span_diagnostic)
diff --git a/src/tools/miri/tests/fail/layout_cycle.stderr b/src/tools/miri/tests/fail/layout_cycle.stderr
@@ -2,6 +2,7 @@ error[E0391]: cycle detected when computing layout of `S<S<()>>`
    |
    = note: ...which requires computing layout of `<S<()> as Tr>::I`...
    = note: ...which again requires computing layout of `S<S<()>>`, completing the cycle
+   = note: see https://rustc-dev-guide.rust-lang.org/overview.html#queries and https://rustc-dev-guide.rust-lang.org/query.html for more information
 
 error: post-monomorphization error: a cycle occurred during layout computation
   --> RUSTLIB/core/src/mem/mod.rs:LL:CC
diff --git a/tests/rustdoc-ui/issue-110629-private-type-cycle-dyn.stderr b/tests/rustdoc-ui/issue-110629-private-type-cycle-dyn.stderr
@@ -19,6 +19,7 @@ LL | | fn bar<'a, 'b>(i: &'a i32) -> Bar<'a, 'b> {
 LL | |     assert!(bar(&meh) == bar(&muh));
 LL | | }
    | |_^
+   = note: see https://rustc-dev-guide.rust-lang.org/overview.html#queries and https://rustc-dev-guide.rust-lang.org/query.html for more information
 
 error: aborting due to previous error
 
diff --git a/tests/ui/associated-consts/defaults-cyclic-fail.stderr b/tests/ui/associated-consts/defaults-cyclic-fail.stderr
@@ -15,6 +15,7 @@ note: cycle used when const-evaluating + checking `main::promoted[1]`
    |
 LL |     assert_eq!(<() as Tr>::A, 0);
    |                ^^^^^^^^^^^^^
+   = note: see https://rustc-dev-guide.rust-lang.org/overview.html#queries and https://rustc-dev-guide.rust-lang.org/query.html for more information
 
 error: aborting due to previous error
 
diff --git a/tests/ui/associated-consts/issue-24949-assoc-const-static-recursion-impl.stderr b/tests/ui/associated-consts/issue-24949-assoc-const-static-recursion-impl.stderr
@@ -26,6 +26,7 @@ LL |     const BAR: u32 = IMPL_REF_BAR;
    |     ^^^^^^^^^^^^^^
    = note: ...which again requires elaborating drops for `<impl at $DIR/issue-24949-assoc-const-static-recursion-impl.rs:11:1: 11:19>::BAR`, completing the cycle
    = note: cycle used when running analysis passes on this crate
+   = note: see https://rustc-dev-guide.rust-lang.org/overview.html#queries and https://rustc-dev-guide.rust-lang.org/query.html for more information
 
 error: aborting due to previous error
 
diff --git a/tests/ui/associated-consts/issue-24949-assoc-const-static-recursion-trait-default.stderr b/tests/ui/associated-consts/issue-24949-assoc-const-static-recursion-trait-default.stderr
@@ -26,6 +26,7 @@ LL |     const BAR: u32 = DEFAULT_REF_BAR;
    |     ^^^^^^^^^^^^^^
    = note: ...which again requires elaborating drops for `FooDefault::BAR`, completing the cycle
    = note: cycle used when running analysis passes on this crate
+   = note: see https://rustc-dev-guide.rust-lang.org/overview.html#queries and https://rustc-dev-guide.rust-lang.org/query.html for more information
 
 error: aborting due to previous error
 
diff --git a/tests/ui/associated-consts/issue-24949-assoc-const-static-recursion-trait.stderr b/tests/ui/associated-consts/issue-24949-assoc-const-static-recursion-trait.stderr
@@ -26,6 +26,7 @@ LL |     const BAR: u32 = TRAIT_REF_BAR;
    |     ^^^^^^^^^^^^^^
    = note: ...which again requires elaborating drops for `<impl at $DIR/issue-24949-assoc-const-static-recursion-trait.rs:11:1: 11:28>::BAR`, completing the cycle
    = note: cycle used when running analysis passes on this crate
+   = note: see https://rustc-dev-guide.rust-lang.org/overview.html#queries and https://rustc-dev-guide.rust-lang.org/query.html for more information
 
 error: aborting due to previous error
 
diff --git a/tests/ui/associated-inherent-types/bugs/cycle-iat-inside-of-adt.stderr b/tests/ui/associated-inherent-types/bugs/cycle-iat-inside-of-adt.stderr
@@ -37,6 +37,7 @@ LL | |
 LL | |
 LL | | fn main() {}
    | |____________^
+   = note: see https://rustc-dev-guide.rust-lang.org/overview.html#queries and https://rustc-dev-guide.rust-lang.org/query.html for more information
 
 error: aborting due to previous error
 
diff --git a/tests/ui/associated-inherent-types/bugs/cycle-iat-inside-of-where-predicate.stderr b/tests/ui/associated-inherent-types/bugs/cycle-iat-inside-of-where-predicate.stderr
@@ -31,6 +31,7 @@ LL | | // FIXME(inherent_associated_types): This shouldn't lead to a cycle error
 LL | |
 LL | | fn main() {}
    | |____________^
+   = note: see https://rustc-dev-guide.rust-lang.org/overview.html#queries and https://rustc-dev-guide.rust-lang.org/query.html for more information
 
 error: aborting due to previous error
 
diff --git a/tests/ui/associated-type-bounds/ambiguous-associated-type2.rs b/tests/ui/associated-type-bounds/ambiguous-associated-type2.rs
@@ -7,4 +7,6 @@ trait Bar<T> {
 trait Baz: Foo + Bar<Self::Item> {}
 //~^ ERROR cycle detected when computing the super traits of `Baz` with associated type name `Item` [E0391]
 
+
+
 fn main() {}
diff --git a/tests/ui/associated-type-bounds/ambiguous-associated-type2.stderr b/tests/ui/associated-type-bounds/ambiguous-associated-type2.stderr
@@ -10,6 +10,7 @@ note: cycle used when computing the super predicates of `Baz`
    |
 LL | trait Baz: Foo + Bar<Self::Item> {}
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   = note: see https://rustc-dev-guide.rust-lang.org/overview.html#queries and https://rustc-dev-guide.rust-lang.org/query.html for more information
 
 error: aborting due to previous error
 
diff --git a/tests/ui/associated-types/issue-20825.stderr b/tests/ui/associated-types/issue-20825.stderr
@@ -10,6 +10,7 @@ note: cycle used when computing the super predicates of `Processor`
    |
 LL | pub trait Processor: Subscriber<Input = Self::Input> {
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   = note: see https://rustc-dev-guide.rust-lang.org/overview.html#queries and https://rustc-dev-guide.rust-lang.org/query.html for more information
 
 error: aborting due to previous error
 
diff --git a/tests/ui/coherence/coherence-inherited-assoc-ty-cycle-err.stderr b/tests/ui/coherence/coherence-inherited-assoc-ty-cycle-err.stderr
@@ -20,6 +20,7 @@ note: cycle used when coherence checking all impls of trait `Trait`
    |
 LL | trait Trait<T> { type Assoc; }
    | ^^^^^^^^^^^^^^
+   = note: see https://rustc-dev-guide.rust-lang.org/overview.html#queries and https://rustc-dev-guide.rust-lang.org/query.html for more information
 
 error: aborting due to previous error; 1 warning emitted
 
diff --git a/tests/ui/const-generics/generic_const_exprs/closures.stderr b/tests/ui/const-generics/generic_const_exprs/closures.stderr
@@ -20,6 +20,7 @@ note: cycle used when checking that `test` is well-formed
    |
 LL | fn test<const N: usize>() -> [u8; N + (|| 42)()] {}
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   = note: see https://rustc-dev-guide.rust-lang.org/overview.html#queries and https://rustc-dev-guide.rust-lang.org/query.html for more information
 
 error: aborting due to previous error
 
diff --git a/tests/ui/const-generics/issues/issue-83765.stderr b/tests/ui/const-generics/issues/issue-83765.stderr
@@ -15,6 +15,7 @@ note: cycle used when computing candidate for `<LazyUpdim<'_, T, { T::DIM }, DIM
    |
 LL | trait TensorDimension {
    | ^^^^^^^^^^^^^^^^^^^^^
+   = note: see https://rustc-dev-guide.rust-lang.org/overview.html#queries and https://rustc-dev-guide.rust-lang.org/query.html for more information
 
 error: aborting due to previous error
 
diff --git a/tests/ui/consts/const-size_of-cycle.stderr b/tests/ui/consts/const-size_of-cycle.stderr
@@ -23,6 +23,7 @@ note: cycle used when checking that `Foo` is well-formed
    |
 LL | struct Foo {
    | ^^^^^^^^^^
+   = note: see https://rustc-dev-guide.rust-lang.org/overview.html#queries and https://rustc-dev-guide.rust-lang.org/query.html for more information
 
 error: aborting due to previous error
 
diff --git a/tests/ui/consts/issue-103790.stderr b/tests/ui/consts/issue-103790.stderr
@@ -34,6 +34,7 @@ note: cycle used when computing type of `S`
    |
 LL | struct S<const S: (), const S: S = { S }>;
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   = note: see https://rustc-dev-guide.rust-lang.org/overview.html#queries and https://rustc-dev-guide.rust-lang.org/query.html for more information
 
 error[E0391]: cycle detected when computing type of `S`
   --> $DIR/issue-103790.rs:4:1
@@ -58,6 +59,7 @@ LL | | struct S<const S: (), const S: S = { S }>;
 LL | |
 LL | | fn main() {}
    | |____________^
+   = note: see https://rustc-dev-guide.rust-lang.org/overview.html#queries and https://rustc-dev-guide.rust-lang.org/query.html for more information
 
 error: aborting due to 4 previous errors
 
diff --git a/tests/ui/consts/issue-36163.stderr b/tests/ui/consts/issue-36163.stderr
@@ -15,6 +15,7 @@ note: cycle used when simplifying constant for the type system `Foo::B::{constan
    |
 LL |     B = A,
    |         ^
+   = note: see https://rustc-dev-guide.rust-lang.org/overview.html#queries and https://rustc-dev-guide.rust-lang.org/query.html for more information
 
 error: aborting due to previous error
 
diff --git a/tests/ui/consts/issue-44415.stderr b/tests/ui/consts/issue-44415.stderr
@@ -23,6 +23,7 @@ note: cycle used when checking that `Foo` is well-formed
    |
 LL | struct Foo {
    | ^^^^^^^^^^
+   = note: see https://rustc-dev-guide.rust-lang.org/overview.html#queries and https://rustc-dev-guide.rust-lang.org/query.html for more information
 
 error: aborting due to previous error
 
diff --git a/tests/ui/consts/recursive-zst-static.default.stderr b/tests/ui/consts/recursive-zst-static.default.stderr
@@ -19,6 +19,7 @@ LL | | fn main() {
 LL | |     FOO
 LL | | }
    | |_^
+   = note: see https://rustc-dev-guide.rust-lang.org/overview.html#queries and https://rustc-dev-guide.rust-lang.org/query.html for more information
 
 error: aborting due to previous error
 
diff --git a/tests/ui/consts/recursive-zst-static.unleash.stderr b/tests/ui/consts/recursive-zst-static.unleash.stderr
@@ -19,6 +19,7 @@ LL | | fn main() {
 LL | |     FOO
 LL | | }
    | |_^
+   = note: see https://rustc-dev-guide.rust-lang.org/overview.html#queries and https://rustc-dev-guide.rust-lang.org/query.html for more information
 
 error: aborting due to previous error
 
diff --git a/tests/ui/consts/write-to-static-mut-in-static.stderr b/tests/ui/consts/write-to-static-mut-in-static.stderr
@@ -27,6 +27,7 @@ LL | |
 LL | |
 LL | | fn main() {}
    | |____________^
+   = note: see https://rustc-dev-guide.rust-lang.org/overview.html#queries and https://rustc-dev-guide.rust-lang.org/query.html for more information
 
 error: aborting due to 2 previous errors
 
diff --git a/tests/ui/cycle-trait/cycle-trait-default-type-trait.stderr b/tests/ui/cycle-trait/cycle-trait-default-type-trait.stderr
@@ -14,6 +14,7 @@ LL | | }
 LL | |
 LL | | fn main() { }
    | |_____________^
+   = note: see https://rustc-dev-guide.rust-lang.org/overview.html#queries and https://rustc-dev-guide.rust-lang.org/query.html for more information
 
 error: aborting due to previous error
 
diff --git a/tests/ui/cycle-trait/cycle-trait-supertrait-direct.stderr b/tests/ui/cycle-trait/cycle-trait-supertrait-direct.stderr
@@ -12,6 +12,7 @@ LL | / trait Chromosome: Chromosome {
 LL | |
 LL | | }
    | |_^
+   = note: see https://rustc-dev-guide.rust-lang.org/overview.html#queries and https://rustc-dev-guide.rust-lang.org/query.html for more information
 
 error: aborting due to previous error
 
diff --git a/tests/ui/cycle-trait/cycle-trait-supertrait-indirect.stderr b/tests/ui/cycle-trait/cycle-trait-supertrait-indirect.stderr
@@ -15,6 +15,7 @@ note: cycle used when computing the super predicates of `A`
    |
 LL | trait A: B {
    |          ^
+   = note: see https://rustc-dev-guide.rust-lang.org/overview.html#queries and https://rustc-dev-guide.rust-lang.org/query.html for more information
 
 error: aborting due to previous error
 
diff --git a/tests/ui/cycle-trait/issue-12511.stderr b/tests/ui/cycle-trait/issue-12511.stderr
@@ -17,6 +17,7 @@ LL | / trait T1 : T2 {
 LL | |
 LL | | }
    | |_^
+   = note: see https://rustc-dev-guide.rust-lang.org/overview.html#queries and https://rustc-dev-guide.rust-lang.org/query.html for more information
 
 error: aborting due to previous error
 
diff --git a/tests/ui/dyn-star/param-env-region-infer.next.stderr b/tests/ui/dyn-star/param-env-region-infer.next.stderr
@@ -23,6 +23,7 @@ LL | | use std::fmt::Debug;
 LL | |
 LL | | fn main() {}
    | |____________^
+   = note: see https://rustc-dev-guide.rust-lang.org/overview.html#queries and https://rustc-dev-guide.rust-lang.org/query.html for more information
 
 error: aborting due to previous error
 
diff --git a/tests/ui/impl-trait/auto-trait-leak.stderr b/tests/ui/impl-trait/auto-trait-leak.stderr
@@ -33,6 +33,7 @@ LL | | fn send<T: Send>(_: T) {}
 LL | |     Rc::new(String::from("foo"))
 LL | | }
    | |_^
+   = note: see https://rustc-dev-guide.rust-lang.org/overview.html#queries and https://rustc-dev-guide.rust-lang.org/query.html for more information
 
 error[E0391]: cycle detected when computing type of `cycle1::{opaque#0}`
   --> $DIR/auto-trait-leak.rs:11:16
@@ -68,6 +69,7 @@ LL | | fn send<T: Send>(_: T) {}
 LL | |     Rc::new(String::from("foo"))
 LL | | }
    | |_^
+   = note: see https://rustc-dev-guide.rust-lang.org/overview.html#queries and https://rustc-dev-guide.rust-lang.org/query.html for more information
 
 error: cannot check whether the hidden type of opaque type satisfies auto traits
   --> $DIR/auto-trait-leak.rs:21:10
diff --git a/tests/ui/infinite/infinite-trait-alias-recursion.stderr b/tests/ui/infinite/infinite-trait-alias-recursion.stderr
@@ -21,6 +21,7 @@ note: cycle used when collecting item types in top-level module
    |
 LL | trait T1 = T2;
    | ^^^^^^^^^^^^^^
+   = note: see https://rustc-dev-guide.rust-lang.org/overview.html#queries and https://rustc-dev-guide.rust-lang.org/query.html for more information
 
 error: aborting due to previous error
 
diff --git a/tests/ui/infinite/infinite-type-alias-mutual-recursion.stderr b/tests/ui/infinite/infinite-type-alias-mutual-recursion.stderr
@@ -28,6 +28,7 @@ LL | | type X3 = X1;
 LL | |
 LL | | fn main() {}
    | |____________^
+   = note: see https://rustc-dev-guide.rust-lang.org/overview.html#queries and https://rustc-dev-guide.rust-lang.org/query.html for more information
 
 error: aborting due to previous error
 
diff --git a/tests/ui/infinite/infinite-vec-type-recursion.stderr b/tests/ui/infinite/infinite-vec-type-recursion.stderr
@@ -16,6 +16,7 @@ LL | |
 LL | |
 LL | | fn main() { let b: X = Vec::new(); }
    | |____________________________________^
+   = note: see https://rustc-dev-guide.rust-lang.org/overview.html#queries and https://rustc-dev-guide.rust-lang.org/query.html for more information
 
 error: aborting due to previous error
 
diff --git a/tests/ui/issues/issue-17252.stderr b/tests/ui/issues/issue-17252.stderr
@@ -10,6 +10,7 @@ note: cycle used when const-evaluating + checking `main::{constant#0}`
    |
 LL |     let _x: [u8; FOO]; // caused stack overflow prior to fix
    |                  ^^^
+   = note: see https://rustc-dev-guide.rust-lang.org/overview.html#queries and https://rustc-dev-guide.rust-lang.org/query.html for more information
 
 error: aborting due to previous error
 
diff --git a/tests/ui/issues/issue-20772.stderr b/tests/ui/issues/issue-20772.stderr
@@ -10,6 +10,7 @@ note: cycle used when computing the super predicates of `T`
    |
 LL | trait T : Iterator<Item=Self::Item>
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   = note: see https://rustc-dev-guide.rust-lang.org/overview.html#queries and https://rustc-dev-guide.rust-lang.org/query.html for more information
 
 error: aborting due to previous error
 
diff --git a/tests/ui/issues/issue-21177.stderr b/tests/ui/issues/issue-21177.stderr
@@ -10,6 +10,7 @@ note: cycle used when computing explicit predicates of `foo`
    |
 LL | fn foo<T: Trait<A = T::B>>() { }
    |                     ^^^^
+   = note: see https://rustc-dev-guide.rust-lang.org/overview.html#queries and https://rustc-dev-guide.rust-lang.org/query.html for more information
 
 error: aborting due to previous error
 
diff --git a/tests/ui/issues/issue-23302-1.stderr b/tests/ui/issues/issue-23302-1.stderr
@@ -10,6 +10,7 @@ note: cycle used when simplifying constant for the type system `X::A::{constant#
    |
 LL |     A = X::A as isize,
    |         ^^^^^^^^^^^^^
+   = note: see https://rustc-dev-guide.rust-lang.org/overview.html#queries and https://rustc-dev-guide.rust-lang.org/query.html for more information
 
 error: aborting due to previous error
 
diff --git a/tests/ui/issues/issue-23302-2.stderr b/tests/ui/issues/issue-23302-2.stderr
@@ -10,6 +10,7 @@ note: cycle used when simplifying constant for the type system `Y::A::{constant#
    |
 LL |     A = Y::B as isize,
    |         ^^^^^^^^^^^^^
+   = note: see https://rustc-dev-guide.rust-lang.org/overview.html#queries and https://rustc-dev-guide.rust-lang.org/query.html for more information
 
 error: aborting due to previous error
 
diff --git a/tests/ui/issues/issue-23302-3.stderr b/tests/ui/issues/issue-23302-3.stderr
@@ -15,6 +15,7 @@ note: cycle used when simplifying constant for the type system `A`
    |
 LL | const A: i32 = B;
    | ^^^^^^^^^^^^
+   = note: see https://rustc-dev-guide.rust-lang.org/overview.html#queries and https://rustc-dev-guide.rust-lang.org/query.html for more information
 
 error: aborting due to previous error
 
diff --git a/tests/ui/issues/issue-34373.stderr b/tests/ui/issues/issue-34373.stderr
@@ -21,6 +21,7 @@ LL | |     fn foo(_: T) {}
 LL | | fn main() {
 LL | | }
    | |_^
+   = note: see https://rustc-dev-guide.rust-lang.org/overview.html#queries and https://rustc-dev-guide.rust-lang.org/query.html for more information
 
 error: aborting due to previous error
 
diff --git a/tests/ui/recursion/issue-26548-recursion-via-normalize.rs b/tests/ui/recursion/issue-26548-recursion-via-normalize.rs
@@ -1,4 +1,5 @@
 //~ ERROR cycle detected when computing layout of `core::option::Option<S>`
+//~| NOTE see https://rustc-dev-guide.rust-lang.org/overview.html#queries and https://rustc-dev-guide.rust-lang.org/query.html for more information
 //~| NOTE ...which requires computing layout of `S`...
 //~| NOTE ...which requires computing layout of `core::option::Option<<S as Mirror>::It>`...
 //~| NOTE ...which again requires computing layout of `core::option::Option<S>`, completing the cycle
diff --git a/tests/ui/recursion/issue-26548-recursion-via-normalize.stderr b/tests/ui/recursion/issue-26548-recursion-via-normalize.stderr
@@ -4,6 +4,7 @@ error[E0391]: cycle detected when computing layout of `core::option::Option<S>`
    = note: ...which requires computing layout of `core::option::Option<<S as Mirror>::It>`...
    = note: ...which again requires computing layout of `core::option::Option<S>`, completing the cycle
    = note: cycle used when computing layout of `core::option::Option<<S as Mirror>::It>`
+   = note: see https://rustc-dev-guide.rust-lang.org/overview.html#queries and https://rustc-dev-guide.rust-lang.org/query.html for more information
 
 error: aborting due to previous error
 
diff --git a/tests/ui/recursion/recursive-static-definition.stderr b/tests/ui/recursion/recursive-static-definition.stderr
@@ -18,6 +18,7 @@ LL | |
 LL | |
 LL | | fn main() {}
    | |____________^
+   = note: see https://rustc-dev-guide.rust-lang.org/overview.html#queries and https://rustc-dev-guide.rust-lang.org/query.html for more information
 
 error: aborting due to previous error
 
diff --git a/tests/ui/resolve/resolve-self-in-impl.stderr b/tests/ui/resolve/resolve-self-in-impl.stderr
@@ -56,6 +56,7 @@ LL | | trait Tr<T = u8> {
 LL | |
 LL | | fn main() {}
    | |____________^
+   = note: see https://rustc-dev-guide.rust-lang.org/overview.html#queries and https://rustc-dev-guide.rust-lang.org/query.html for more information
 
 error: aborting due to 6 previous errors
 
diff --git a/tests/ui/sized/recursive-type-2.stderr b/tests/ui/sized/recursive-type-2.stderr
@@ -7,6 +7,7 @@ note: cycle used when elaborating drops for `main`
    |
 LL | fn main() {
    | ^^^^^^^^^
+   = note: see https://rustc-dev-guide.rust-lang.org/overview.html#queries and https://rustc-dev-guide.rust-lang.org/query.html for more information
 
 error: aborting due to previous error
 
diff --git a/tests/ui/traits/trait-upcasting/cyclic-trait-resolution.stderr b/tests/ui/traits/trait-upcasting/cyclic-trait-resolution.stderr
@@ -10,6 +10,7 @@ note: cycle used when collecting item types in top-level module
    |
 LL | trait A: B + A {}
    | ^^^^^^^^^^^^^^^^^
+   = note: see https://rustc-dev-guide.rust-lang.org/overview.html#queries and https://rustc-dev-guide.rust-lang.org/query.html for more information
 
 error: aborting due to previous error
 
diff --git a/tests/ui/type-alias-enum-variants/self-in-enum-definition.stderr b/tests/ui/type-alias-enum-variants/self-in-enum-definition.stderr
@@ -67,6 +67,7 @@ LL | |     V2 = Self::V1 as u8 + 1,    // OK; See #50072.
 LL | |
 LL | | fn main() {}
    | |____________^
+   = note: see https://rustc-dev-guide.rust-lang.org/overview.html#queries and https://rustc-dev-guide.rust-lang.org/query.html for more information
 
 error: aborting due to previous error
 
diff --git a/tests/ui/type-alias-impl-trait/auto-trait-leakage3.stderr b/tests/ui/type-alias-impl-trait/auto-trait-leakage3.stderr
diff --git a/tests/ui/type-alias-impl-trait/inference-cycle.stderr b/tests/ui/type-alias-impl-trait/inference-cycle.stderr
diff --git a/tests/ui/type-alias-impl-trait/issue-53092-2.stderr b/tests/ui/type-alias-impl-trait/issue-53092-2.stderr
diff --git a/tests/ui/type-alias-impl-trait/reveal_local.stderr b/tests/ui/type-alias-impl-trait/reveal_local.stderr

Original file line number	Diff line number	Diff line change
`@@ -1,4 +1,5 @@`
`1`	`1`	`query_system_cycle = cycle detected when {$stack_bottom}`
	`2`	`+ .note = see https://rustc-dev-guide.rust-lang.org/overview.html#queries and https://rustc-dev-guide.rust-lang.org/query.html for more information`
`2`	`3`
`3`	`4`	`query_system_cycle_recursive_trait_alias = trait aliases cannot be recursive`
`4`	`5`
Original file line number	Diff line number	Diff line change
`@@ -57,6 +57,8 @@ pub struct Cycle {`
`57`	`57`	`pub alias: Option<Alias>,`
`58`	`58`	`#[subdiagnostic]`
`59`	`59`	`pub cycle_usage: Option<CycleUsage>,`
	`60`	`+ #[note]`
	`61`	`+ pub note_span: (),`
`60`	`62`	`}`
`61`	`63`
`62`	`64`	`#[derive(Diagnostic)]`
Original file line number	Diff line number	Diff line change
@@ -2,6 +2,7 @@ error[E0391]: cycle detected when computing layout of `S<S<()>>`
`2`	`2`	`\|`
`3`	`3`	= note: ...which requires computing layout of `<S<()> as Tr>::I`...
`4`	`4`	= note: ...which again requires computing layout of `S<S<()>>`, completing the cycle
	`5`	`+ = note: see https://rustc-dev-guide.rust-lang.org/overview.html#queries and https://rustc-dev-guide.rust-lang.org/query.html for more information`
`5`	`6`
`6`	`7`	`error: post-monomorphization error: a cycle occurred during layout computation`
`7`	`8`	`--> RUSTLIB/core/src/mem/mod.rs:LL:CC`
Original file line number	Diff line number	Diff line change
@@ -15,6 +15,7 @@ note: cycle used when const-evaluating + checking `main::promoted[1]`
`15`	`15`	`\|`
`16`	`16`	`LL \| assert_eq!(<() as Tr>::A, 0);`
`17`	`17`	`\| ^^^^^^^^^^^^^`
	`18`	`+ = note: see https://rustc-dev-guide.rust-lang.org/overview.html#queries and https://rustc-dev-guide.rust-lang.org/query.html for more information`
`18`	`19`
`19`	`20`	`error: aborting due to previous error`
`20`	`21`