Rollup merge of #62646 - estebank:wording, r=petrochenkov

Tweak wording in feature gate errors

9 files changed, 62 insertions, 62 deletions

diff --git a/src/libsyntax/feature_gate.rs b/src/libsyntax/feature_gate.rs
index e3628d908fb..ed7d6c35fb9 100644
--- a/src/libsyntax/feature_gate.rs
+++ b/src/libsyntax/feature_gate.rs
@@ -1451,7 +1451,7 @@ pub const BUILTIN_ATTRIBUTES: &[BuiltinAttribute] = &[
     template!(Word),
     Gated(Stability::Unstable,
         sym::dropck_eyepatch,
-        "may_dangle has unstable semantics and may be removed in the future",
+        "`may_dangle` has unstable semantics and may be removed in the future",
         cfg_fn!(dropck_eyepatch))),
     (sym::unwind, Whitelisted, template!(List: "allowed|aborts"), Gated(Stability::Unstable,
                                 sym::unwind_attributes,
@@ -1693,8 +1693,8 @@ impl<'a> Context<'a> {
             // Only run the custom attribute lint during regular feature gate
             // checking. Macro gating runs before the plugin attributes are
             // registered, so we skip this in that case.
-            let msg = format!("The attribute `{}` is currently unknown to the compiler and \
-                                may have meaning added to it in the future", attr.path);
+            let msg = format!("the attribute `{}` is currently unknown to the compiler and \
+                               may have meaning added to it in the future", attr.path);
             gate_feature!(self, custom_attribute, attr.span, &msg);
         }
     }
diff --git a/src/test/ui/conditional-compilation/cfg-generic-params.stderr b/src/test/ui/conditional-compilation/cfg-generic-params.stderr
index b73d7da30b8..1f9731fcfbe 100644
--- a/src/test/ui/conditional-compilation/cfg-generic-params.stderr
+++ b/src/test/ui/conditional-compilation/cfg-generic-params.stderr
@@ -16,7 +16,7 @@ error: only lifetime parameters can be used in this context
 LL | struct WhereBad where for<#[cfg(no)] 'a, #[cfg(yes)] T> u8: Copy;
    |                                                      ^
 
-error[E0658]: The attribute `unknown` is currently unknown to the compiler and may have meaning added to it in the future
+error[E0658]: the attribute `unknown` is currently unknown to the compiler and may have meaning added to it in the future
   --> $DIR/cfg-generic-params.rs:19:29
    |
 LL | fn f_lt_yes<#[cfg_attr(yes, unknown)] 'a>() {}
@@ -25,7 +25,7 @@ LL | fn f_lt_yes<#[cfg_attr(yes, unknown)] 'a>() {}
    = note: for more information, see https://github.com/rust-lang/rust/issues/29642
    = help: add `#![feature(custom_attribute)]` to the crate attributes to enable
 
-error[E0658]: The attribute `unknown` is currently unknown to the compiler and may have meaning added to it in the future
+error[E0658]: the attribute `unknown` is currently unknown to the compiler and may have meaning added to it in the future
   --> $DIR/cfg-generic-params.rs:21:29
    |
 LL | fn f_ty_yes<#[cfg_attr(yes, unknown)] T>() {}
@@ -34,7 +34,7 @@ LL | fn f_ty_yes<#[cfg_attr(yes, unknown)] T>() {}
    = note: for more information, see https://github.com/rust-lang/rust/issues/29642
    = help: add `#![feature(custom_attribute)]` to the crate attributes to enable
 
-error[E0658]: The attribute `unknown` is currently unknown to the compiler and may have meaning added to it in the future
+error[E0658]: the attribute `unknown` is currently unknown to the compiler and may have meaning added to it in the future
   --> $DIR/cfg-generic-params.rs:24:34
    |
 LL | type FnYes = for<#[cfg_attr(yes, unknown)] 'a> fn();
@@ -43,7 +43,7 @@ LL | type FnYes = for<#[cfg_attr(yes, unknown)] 'a> fn();
    = note: for more information, see https://github.com/rust-lang/rust/issues/29642
    = help: add `#![feature(custom_attribute)]` to the crate attributes to enable
 
-error[E0658]: The attribute `unknown` is currently unknown to the compiler and may have meaning added to it in the future
+error[E0658]: the attribute `unknown` is currently unknown to the compiler and may have meaning added to it in the future
   --> $DIR/cfg-generic-params.rs:28:40
    |
 LL | type PolyYes = dyn for<#[cfg_attr(yes, unknown)] 'a> Copy;
@@ -52,7 +52,7 @@ LL | type PolyYes = dyn for<#[cfg_attr(yes, unknown)] 'a> Copy;
    = note: for more information, see https://github.com/rust-lang/rust/issues/29642
    = help: add `#![feature(custom_attribute)]` to the crate attributes to enable
 
-error[E0658]: The attribute `unknown` is currently unknown to the compiler and may have meaning added to it in the future
+error[E0658]: the attribute `unknown` is currently unknown to the compiler and may have meaning added to it in the future
   --> $DIR/cfg-generic-params.rs:32:43
    |
 LL | struct WhereYes where for<#[cfg_attr(yes, unknown)] 'a> u8: Copy;
diff --git a/src/test/ui/feature-gates/feature-gate-custom_attribute2.rs b/src/test/ui/feature-gates/feature-gate-custom_attribute2.rs
index 2137a2a003a..8fe11cb02a0 100644
--- a/src/test/ui/feature-gates/feature-gate-custom_attribute2.rs
+++ b/src/test/ui/feature-gates/feature-gate-custom_attribute2.rs
@@ -4,54 +4,54 @@
 // gate-test-custom_attribute
 
 struct StLt<#[lt_struct] 'a>(&'a u32);
-//~^ ERROR The attribute `lt_struct` is currently unknown to the compiler
+//~^ ERROR the attribute `lt_struct` is currently unknown to the compiler
 struct StTy<#[ty_struct] I>(I);
-//~^ ERROR The attribute `ty_struct` is currently unknown to the compiler
+//~^ ERROR the attribute `ty_struct` is currently unknown to the compiler
 
 enum EnLt<#[lt_enum] 'b> { A(&'b u32), B }
-//~^ ERROR The attribute `lt_enum` is currently unknown to the compiler
+//~^ ERROR the attribute `lt_enum` is currently unknown to the compiler
 enum EnTy<#[ty_enum] J> { A(J), B }
-//~^ ERROR The attribute `ty_enum` is currently unknown to the compiler
+//~^ ERROR the attribute `ty_enum` is currently unknown to the compiler
 
 trait TrLt<#[lt_trait] 'c> { fn foo(&self, _: &'c [u32]) -> &'c u32; }
-//~^ ERROR The attribute `lt_trait` is currently unknown to the compiler
+//~^ ERROR the attribute `lt_trait` is currently unknown to the compiler
 trait TrTy<#[ty_trait] K> { fn foo(&self, _: K); }
-//~^ ERROR The attribute `ty_trait` is currently unknown to the compiler
+//~^ ERROR the attribute `ty_trait` is currently unknown to the compiler
 
 type TyLt<#[lt_type] 'd> = &'d u32;
-//~^ ERROR The attribute `lt_type` is currently unknown to the compiler
+//~^ ERROR the attribute `lt_type` is currently unknown to the compiler
 type TyTy<#[ty_type] L> = (L, );
-//~^ ERROR The attribute `ty_type` is currently unknown to the compiler
+//~^ ERROR the attribute `ty_type` is currently unknown to the compiler
 
 impl<#[lt_inherent] 'e> StLt<'e> { }
-//~^ ERROR The attribute `lt_inherent` is currently unknown to the compiler
+//~^ ERROR the attribute `lt_inherent` is currently unknown to the compiler
 impl<#[ty_inherent] M> StTy<M> { }
-//~^ ERROR The attribute `ty_inherent` is currently unknown to the compiler
+//~^ ERROR the attribute `ty_inherent` is currently unknown to the compiler
 
 impl<#[lt_impl_for] 'f> TrLt<'f> for StLt<'f> {
-    //~^ ERROR The attribute `lt_impl_for` is currently unknown to the compiler
+    //~^ ERROR the attribute `lt_impl_for` is currently unknown to the compiler
     fn foo(&self, _: &'f [u32]) -> &'f u32 { loop { } }
 }
 impl<#[ty_impl_for] N> TrTy<N> for StTy<N> {
-    //~^ ERROR The attribute `ty_impl_for` is currently unknown to the compiler
+    //~^ ERROR the attribute `ty_impl_for` is currently unknown to the compiler
     fn foo(&self, _: N) { }
 }
 
 fn f_lt<#[lt_fn] 'g>(_: &'g [u32]) -> &'g u32 { loop { } }
-//~^ ERROR The attribute `lt_fn` is currently unknown to the compiler
+//~^ ERROR the attribute `lt_fn` is currently unknown to the compiler
 fn f_ty<#[ty_fn] O>(_: O) { }
-//~^ ERROR The attribute `ty_fn` is currently unknown to the compiler
+//~^ ERROR the attribute `ty_fn` is currently unknown to the compiler
 
 impl<I> StTy<I> {
     fn m_lt<#[lt_meth] 'h>(_: &'h [u32]) -> &'h u32 { loop { } }
-    //~^ ERROR The attribute `lt_meth` is currently unknown to the compiler
+    //~^ ERROR the attribute `lt_meth` is currently unknown to the compiler
     fn m_ty<#[ty_meth] P>(_: P) { }
-    //~^ ERROR The attribute `ty_meth` is currently unknown to the compiler
+    //~^ ERROR the attribute `ty_meth` is currently unknown to the compiler
 }
 
 fn hof_lt<Q>(_: Q)
     where Q: for <#[lt_hof] 'i> Fn(&'i [u32]) -> &'i u32
-    //~^ ERROR The attribute `lt_hof` is currently unknown to the compiler
+    //~^ ERROR the attribute `lt_hof` is currently unknown to the compiler
 {
 }
 
diff --git a/src/test/ui/feature-gates/feature-gate-custom_attribute2.stderr b/src/test/ui/feature-gates/feature-gate-custom_attribute2.stderr
index f159308dcb8..15e0c41b906 100644
--- a/src/test/ui/feature-gates/feature-gate-custom_attribute2.stderr
+++ b/src/test/ui/feature-gates/feature-gate-custom_attribute2.stderr
@@ -1,4 +1,4 @@
-error[E0658]: The attribute `lt_struct` is currently unknown to the compiler and may have meaning added to it in the future
+error[E0658]: the attribute `lt_struct` is currently unknown to the compiler and may have meaning added to it in the future
   --> $DIR/feature-gate-custom_attribute2.rs:6:13
    |
 LL | struct StLt<#[lt_struct] 'a>(&'a u32);
@@ -7,7 +7,7 @@ LL | struct StLt<#[lt_struct] 'a>(&'a u32);
    = note: for more information, see https://github.com/rust-lang/rust/issues/29642
    = help: add `#![feature(custom_attribute)]` to the crate attributes to enable
 
-error[E0658]: The attribute `ty_struct` is currently unknown to the compiler and may have meaning added to it in the future
+error[E0658]: the attribute `ty_struct` is currently unknown to the compiler and may have meaning added to it in the future
   --> $DIR/feature-gate-custom_attribute2.rs:8:13
    |
 LL | struct StTy<#[ty_struct] I>(I);
@@ -16,7 +16,7 @@ LL | struct StTy<#[ty_struct] I>(I);
    = note: for more information, see https://github.com/rust-lang/rust/issues/29642
    = help: add `#![feature(custom_attribute)]` to the crate attributes to enable
 
-error[E0658]: The attribute `lt_enum` is currently unknown to the compiler and may have meaning added to it in the future
+error[E0658]: the attribute `lt_enum` is currently unknown to the compiler and may have meaning added to it in the future
   --> $DIR/feature-gate-custom_attribute2.rs:11:11
    |
 LL | enum EnLt<#[lt_enum] 'b> { A(&'b u32), B }
@@ -25,7 +25,7 @@ LL | enum EnLt<#[lt_enum] 'b> { A(&'b u32), B }
    = note: for more information, see https://github.com/rust-lang/rust/issues/29642
    = help: add `#![feature(custom_attribute)]` to the crate attributes to enable
 
-error[E0658]: The attribute `ty_enum` is currently unknown to the compiler and may have meaning added to it in the future
+error[E0658]: the attribute `ty_enum` is currently unknown to the compiler and may have meaning added to it in the future
   --> $DIR/feature-gate-custom_attribute2.rs:13:11
    |
 LL | enum EnTy<#[ty_enum] J> { A(J), B }
@@ -34,7 +34,7 @@ LL | enum EnTy<#[ty_enum] J> { A(J), B }
    = note: for more information, see https://github.com/rust-lang/rust/issues/29642
    = help: add `#![feature(custom_attribute)]` to the crate attributes to enable
 
-error[E0658]: The attribute `lt_trait` is currently unknown to the compiler and may have meaning added to it in the future
+error[E0658]: the attribute `lt_trait` is currently unknown to the compiler and may have meaning added to it in the future
   --> $DIR/feature-gate-custom_attribute2.rs:16:12
    |
 LL | trait TrLt<#[lt_trait] 'c> { fn foo(&self, _: &'c [u32]) -> &'c u32; }
@@ -43,7 +43,7 @@ LL | trait TrLt<#[lt_trait] 'c> { fn foo(&self, _: &'c [u32]) -> &'c u32; }
    = note: for more information, see https://github.com/rust-lang/rust/issues/29642
    = help: add `#![feature(custom_attribute)]` to the crate attributes to enable
 
-error[E0658]: The attribute `ty_trait` is currently unknown to the compiler and may have meaning added to it in the future
+error[E0658]: the attribute `ty_trait` is currently unknown to the compiler and may have meaning added to it in the future
   --> $DIR/feature-gate-custom_attribute2.rs:18:12
    |
 LL | trait TrTy<#[ty_trait] K> { fn foo(&self, _: K); }
@@ -52,7 +52,7 @@ LL | trait TrTy<#[ty_trait] K> { fn foo(&self, _: K); }
    = note: for more information, see https://github.com/rust-lang/rust/issues/29642
    = help: add `#![feature(custom_attribute)]` to the crate attributes to enable
 
-error[E0658]: The attribute `lt_type` is currently unknown to the compiler and may have meaning added to it in the future
+error[E0658]: the attribute `lt_type` is currently unknown to the compiler and may have meaning added to it in the future
   --> $DIR/feature-gate-custom_attribute2.rs:21:11
    |
 LL | type TyLt<#[lt_type] 'd> = &'d u32;
@@ -61,7 +61,7 @@ LL | type TyLt<#[lt_type] 'd> = &'d u32;
    = note: for more information, see https://github.com/rust-lang/rust/issues/29642
    = help: add `#![feature(custom_attribute)]` to the crate attributes to enable
 
-error[E0658]: The attribute `ty_type` is currently unknown to the compiler and may have meaning added to it in the future
+error[E0658]: the attribute `ty_type` is currently unknown to the compiler and may have meaning added to it in the future
   --> $DIR/feature-gate-custom_attribute2.rs:23:11
    |
 LL | type TyTy<#[ty_type] L> = (L, );
@@ -70,7 +70,7 @@ LL | type TyTy<#[ty_type] L> = (L, );
    = note: for more information, see https://github.com/rust-lang/rust/issues/29642
    = help: add `#![feature(custom_attribute)]` to the crate attributes to enable
 
-error[E0658]: The attribute `lt_inherent` is currently unknown to the compiler and may have meaning added to it in the future
+error[E0658]: the attribute `lt_inherent` is currently unknown to the compiler and may have meaning added to it in the future
   --> $DIR/feature-gate-custom_attribute2.rs:26:6
    |
 LL | impl<#[lt_inherent] 'e> StLt<'e> { }
@@ -79,7 +79,7 @@ LL | impl<#[lt_inherent] 'e> StLt<'e> { }
    = note: for more information, see https://github.com/rust-lang/rust/issues/29642
    = help: add `#![feature(custom_attribute)]` to the crate attributes to enable
 
-error[E0658]: The attribute `ty_inherent` is currently unknown to the compiler and may have meaning added to it in the future
+error[E0658]: the attribute `ty_inherent` is currently unknown to the compiler and may have meaning added to it in the future
   --> $DIR/feature-gate-custom_attribute2.rs:28:6
    |
 LL | impl<#[ty_inherent] M> StTy<M> { }
@@ -88,7 +88,7 @@ LL | impl<#[ty_inherent] M> StTy<M> { }
    = note: for more information, see https://github.com/rust-lang/rust/issues/29642
    = help: add `#![feature(custom_attribute)]` to the crate attributes to enable
 
-error[E0658]: The attribute `lt_impl_for` is currently unknown to the compiler and may have meaning added to it in the future
+error[E0658]: the attribute `lt_impl_for` is currently unknown to the compiler and may have meaning added to it in the future
   --> $DIR/feature-gate-custom_attribute2.rs:31:6
    |
 LL | impl<#[lt_impl_for] 'f> TrLt<'f> for StLt<'f> {
@@ -97,7 +97,7 @@ LL | impl<#[lt_impl_for] 'f> TrLt<'f> for StLt<'f> {
    = note: for more information, see https://github.com/rust-lang/rust/issues/29642
    = help: add `#![feature(custom_attribute)]` to the crate attributes to enable
 
-error[E0658]: The attribute `ty_impl_for` is currently unknown to the compiler and may have meaning added to it in the future
+error[E0658]: the attribute `ty_impl_for` is currently unknown to the compiler and may have meaning added to it in the future
   --> $DIR/feature-gate-custom_attribute2.rs:35:6
    |
 LL | impl<#[ty_impl_for] N> TrTy<N> for StTy<N> {
@@ -106,7 +106,7 @@ LL | impl<#[ty_impl_for] N> TrTy<N> for StTy<N> {
    = note: for more information, see https://github.com/rust-lang/rust/issues/29642
    = help: add `#![feature(custom_attribute)]` to the crate attributes to enable
 
-error[E0658]: The attribute `lt_fn` is currently unknown to the compiler and may have meaning added to it in the future
+error[E0658]: the attribute `lt_fn` is currently unknown to the compiler and may have meaning added to it in the future
   --> $DIR/feature-gate-custom_attribute2.rs:40:9
    |
 LL | fn f_lt<#[lt_fn] 'g>(_: &'g [u32]) -> &'g u32 { loop { } }
@@ -115,7 +115,7 @@ LL | fn f_lt<#[lt_fn] 'g>(_: &'g [u32]) -> &'g u32 { loop { } }
    = note: for more information, see https://github.com/rust-lang/rust/issues/29642
    = help: add `#![feature(custom_attribute)]` to the crate attributes to enable
 
-error[E0658]: The attribute `ty_fn` is currently unknown to the compiler and may have meaning added to it in the future
+error[E0658]: the attribute `ty_fn` is currently unknown to the compiler and may have meaning added to it in the future
   --> $DIR/feature-gate-custom_attribute2.rs:42:9
    |
 LL | fn f_ty<#[ty_fn] O>(_: O) { }
@@ -124,7 +124,7 @@ LL | fn f_ty<#[ty_fn] O>(_: O) { }
    = note: for more information, see https://github.com/rust-lang/rust/issues/29642
    = help: add `#![feature(custom_attribute)]` to the crate attributes to enable
 
-error[E0658]: The attribute `lt_meth` is currently unknown to the compiler and may have meaning added to it in the future
+error[E0658]: the attribute `lt_meth` is currently unknown to the compiler and may have meaning added to it in the future
   --> $DIR/feature-gate-custom_attribute2.rs:46:13
    |
 LL |     fn m_lt<#[lt_meth] 'h>(_: &'h [u32]) -> &'h u32 { loop { } }
@@ -133,7 +133,7 @@ LL |     fn m_lt<#[lt_meth] 'h>(_: &'h [u32]) -> &'h u32 { loop { } }
    = note: for more information, see https://github.com/rust-lang/rust/issues/29642
    = help: add `#![feature(custom_attribute)]` to the crate attributes to enable
 
-error[E0658]: The attribute `ty_meth` is currently unknown to the compiler and may have meaning added to it in the future
+error[E0658]: the attribute `ty_meth` is currently unknown to the compiler and may have meaning added to it in the future
   --> $DIR/feature-gate-custom_attribute2.rs:48:13
    |
 LL |     fn m_ty<#[ty_meth] P>(_: P) { }
@@ -142,7 +142,7 @@ LL |     fn m_ty<#[ty_meth] P>(_: P) { }
    = note: for more information, see https://github.com/rust-lang/rust/issues/29642
    = help: add `#![feature(custom_attribute)]` to the crate attributes to enable
 
-error[E0658]: The attribute `lt_hof` is currently unknown to the compiler and may have meaning added to it in the future
+error[E0658]: the attribute `lt_hof` is currently unknown to the compiler and may have meaning added to it in the future
   --> $DIR/feature-gate-custom_attribute2.rs:53:19
    |
 LL |     where Q: for <#[lt_hof] 'i> Fn(&'i [u32]) -> &'i u32
diff --git a/src/test/ui/feature-gates/feature-gate-may-dangle.rs b/src/test/ui/feature-gates/feature-gate-may-dangle.rs
index 20896e426f6..23db92c15df 100644
--- a/src/test/ui/feature-gates/feature-gate-may-dangle.rs
+++ b/src/test/ui/feature-gates/feature-gate-may-dangle.rs
@@ -4,7 +4,7 @@
 
 struct Pt<A>(A);
 unsafe impl<#[may_dangle] A> Drop for Pt<A> {
-    //~^ ERROR may_dangle has unstable semantics and may be removed in the future
+    //~^ ERROR `may_dangle` has unstable semantics and may be removed in the future
     fn drop(&mut self) { }
 }
 
diff --git a/src/test/ui/feature-gates/feature-gate-may-dangle.stderr b/src/test/ui/feature-gates/feature-gate-may-dangle.stderr
index c47bb75e6bc..b344d737574 100644
--- a/src/test/ui/feature-gates/feature-gate-may-dangle.stderr
+++ b/src/test/ui/feature-gates/feature-gate-may-dangle.stderr
@@ -1,4 +1,4 @@
-error[E0658]: may_dangle has unstable semantics and may be removed in the future
+error[E0658]: `may_dangle` has unstable semantics and may be removed in the future
   --> $DIR/feature-gate-may-dangle.rs:6:13
    |
 LL | unsafe impl<#[may_dangle] A> Drop for Pt<A> {
diff --git a/src/test/ui/proc-macro/proc-macro-gates2.stderr b/src/test/ui/proc-macro/proc-macro-gates2.stderr
index 88847193884..a7f6f8bfb13 100644
--- a/src/test/ui/proc-macro/proc-macro-gates2.stderr
+++ b/src/test/ui/proc-macro/proc-macro-gates2.stderr
@@ -1,4 +1,4 @@
-error[E0658]: The attribute `empty_attr` is currently unknown to the compiler and may have meaning added to it in the future
+error[E0658]: the attribute `empty_attr` is currently unknown to the compiler and may have meaning added to it in the future
   --> $DIR/proc-macro-gates2.rs:12:11
    |
 LL | fn _test6<#[empty_attr] T>() {}
@@ -7,7 +7,7 @@ LL | fn _test6<#[empty_attr] T>() {}
    = note: for more information, see https://github.com/rust-lang/rust/issues/29642
    = help: add `#![feature(custom_attribute)]` to the crate attributes to enable
 
-error[E0658]: The attribute `empty_attr` is currently unknown to the compiler and may have meaning added to it in the future
+error[E0658]: the attribute `empty_attr` is currently unknown to the compiler and may have meaning added to it in the future
   --> $DIR/proc-macro-gates2.rs:17:9
    |
 LL |         #[empty_attr]
diff --git a/src/test/ui/rfc-2565-param-attrs/param-attrs-builtin-attrs.rs b/src/test/ui/rfc-2565-param-attrs/param-attrs-builtin-attrs.rs
index 352375729bd..b957c673a41 100644
--- a/src/test/ui/rfc-2565-param-attrs/param-attrs-builtin-attrs.rs
+++ b/src/test/ui/rfc-2565-param-attrs/param-attrs-builtin-attrs.rs
@@ -5,7 +5,7 @@ extern "C" {
         /// Foo
         //~^ ERROR documentation comments cannot be applied to function
         #[test] a: i32,
-        //~^ ERROR The attribute `test` is currently unknown to the compiler and may have
+        //~^ ERROR the attribute `test` is currently unknown to the compiler and may have
         /// Bar
         //~^ ERROR documentation comments cannot be applied to function
         #[must_use]
@@ -21,7 +21,7 @@ type FnType = fn(
     /// Foo
     //~^ ERROR documentation comments cannot be applied to function
     #[test] a: u32,
-    //~^ ERROR The attribute `test` is currently unknown to the compiler and may have
+    //~^ ERROR the attribute `test` is currently unknown to the compiler and may have
     /// Bar
     //~^ ERROR documentation comments cannot be applied to function
     #[must_use]
@@ -36,7 +36,7 @@ pub fn foo(
     /// Foo
     //~^ ERROR documentation comments cannot be applied to function
     #[test] a: u32,
-    //~^ ERROR The attribute `test` is currently unknown to the compiler and may have
+    //~^ ERROR the attribute `test` is currently unknown to the compiler and may have
     /// Bar
     //~^ ERROR documentation comments cannot be applied to function
     #[must_use]
@@ -56,7 +56,7 @@ impl SelfStruct {
         /// Bar
         //~^ ERROR documentation comments cannot be applied to function
         #[test] a: i32,
-        //~^ ERROR The attribute `test` is currently unknown to the compiler and may have
+        //~^ ERROR the attribute `test` is currently unknown to the compiler and may have
         /// Baz
         //~^ ERROR documentation comments cannot be applied to function
         #[must_use]
@@ -77,7 +77,7 @@ impl RefStruct {
         /// Bar
         //~^ ERROR documentation comments cannot be applied to function
         #[test] a: i32,
-        //~^ ERROR The attribute `test` is currently unknown to the compiler and may have
+        //~^ ERROR the attribute `test` is currently unknown to the compiler and may have
         /// Baz
         //~^ ERROR documentation comments cannot be applied to function
         #[must_use]
@@ -96,7 +96,7 @@ trait RefTrait {
         /// Bar
         //~^ ERROR documentation comments cannot be applied to function
         #[test] a: i32,
-        //~^ ERROR The attribute `test` is currently unknown to the compiler and may have
+        //~^ ERROR the attribute `test` is currently unknown to the compiler and may have
         /// Baz
         //~^ ERROR documentation comments cannot be applied to function
         #[must_use]
@@ -115,7 +115,7 @@ impl RefTrait for RefStruct {
         /// Bar
         //~^ ERROR documentation comments cannot be applied to function
         #[test] a: i32,
-        //~^ ERROR The attribute `test` is currently unknown to the compiler and may have
+        //~^ ERROR the attribute `test` is currently unknown to the compiler and may have
         /// Baz
         //~^ ERROR documentation comments cannot be applied to function
         #[must_use]
@@ -132,7 +132,7 @@ fn main() {
         /// Foo
         //~^ ERROR documentation comments cannot be applied to function
         #[test] a: u32,
-        //~^ ERROR The attribute `test` is currently unknown to the compiler and may have
+        //~^ ERROR the attribute `test` is currently unknown to the compiler and may have
         /// Bar
         //~^ ERROR documentation comments cannot be applied to function
         #[must_use]
diff --git a/src/test/ui/rfc-2565-param-attrs/param-attrs-builtin-attrs.stderr b/src/test/ui/rfc-2565-param-attrs/param-attrs-builtin-attrs.stderr
index a4db4b6207d..a57572abb35 100644
--- a/src/test/ui/rfc-2565-param-attrs/param-attrs-builtin-attrs.stderr
+++ b/src/test/ui/rfc-2565-param-attrs/param-attrs-builtin-attrs.stderr
@@ -262,7 +262,7 @@ error: allow, cfg, cfg_attr, deny, forbid, and warn are the only allowed built-i
 LL |         #[no_mangle] b: i32
    |         ^^^^^^^^^^^^
 
-error[E0658]: The attribute `test` is currently unknown to the compiler and may have meaning added to it in the future
+error[E0658]: the attribute `test` is currently unknown to the compiler and may have meaning added to it in the future
   --> $DIR/param-attrs-builtin-attrs.rs:7:9
    |
 LL |         #[test] a: i32,
@@ -271,7 +271,7 @@ LL |         #[test] a: i32,
    = note: for more information, see https://github.com/rust-lang/rust/issues/29642
    = help: add `#![feature(custom_attribute)]` to the crate attributes to enable
 
-error[E0658]: The attribute `test` is currently unknown to the compiler and may have meaning added to it in the future
+error[E0658]: the attribute `test` is currently unknown to the compiler and may have meaning added to it in the future
   --> $DIR/param-attrs-builtin-attrs.rs:23:5
    |
 LL |     #[test] a: u32,
@@ -280,7 +280,7 @@ LL |     #[test] a: u32,
    = note: for more information, see https://github.com/rust-lang/rust/issues/29642
    = help: add `#![feature(custom_attribute)]` to the crate attributes to enable
 
-error[E0658]: The attribute `test` is currently unknown to the compiler and may have meaning added to it in the future
+error[E0658]: the attribute `test` is currently unknown to the compiler and may have meaning added to it in the future
   --> $DIR/param-attrs-builtin-attrs.rs:38:5
    |
 LL |     #[test] a: u32,
@@ -289,7 +289,7 @@ LL |     #[test] a: u32,
    = note: for more information, see https://github.com/rust-lang/rust/issues/29642
    = help: add `#![feature(custom_attribute)]` to the crate attributes to enable
 
-error[E0658]: The attribute `test` is currently unknown to the compiler and may have meaning added to it in the future
+error[E0658]: the attribute `test` is currently unknown to the compiler and may have meaning added to it in the future
   --> $DIR/param-attrs-builtin-attrs.rs:58:9
    |
 LL |         #[test] a: i32,
@@ -298,7 +298,7 @@ LL |         #[test] a: i32,
    = note: for more information, see https://github.com/rust-lang/rust/issues/29642
    = help: add `#![feature(custom_attribute)]` to the crate attributes to enable
 
-error[E0658]: The attribute `test` is currently unknown to the compiler and may have meaning added to it in the future
+error[E0658]: the attribute `test` is currently unknown to the compiler and may have meaning added to it in the future
   --> $DIR/param-attrs-builtin-attrs.rs:79:9
    |
 LL |         #[test] a: i32,
@@ -307,7 +307,7 @@ LL |         #[test] a: i32,
    = note: for more information, see https://github.com/rust-lang/rust/issues/29642
    = help: add `#![feature(custom_attribute)]` to the crate attributes to enable
 
-error[E0658]: The attribute `test` is currently unknown to the compiler and may have meaning added to it in the future
+error[E0658]: the attribute `test` is currently unknown to the compiler and may have meaning added to it in the future
   --> $DIR/param-attrs-builtin-attrs.rs:98:9
    |
 LL |         #[test] a: i32,
@@ -316,7 +316,7 @@ LL |         #[test] a: i32,
    = note: for more information, see https://github.com/rust-lang/rust/issues/29642
    = help: add `#![feature(custom_attribute)]` to the crate attributes to enable
 
-error[E0658]: The attribute `test` is currently unknown to the compiler and may have meaning added to it in the future
+error[E0658]: the attribute `test` is currently unknown to the compiler and may have meaning added to it in the future
   --> $DIR/param-attrs-builtin-attrs.rs:117:9
    |
 LL |         #[test] a: i32,
@@ -325,7 +325,7 @@ LL |         #[test] a: i32,
    = note: for more information, see https://github.com/rust-lang/rust/issues/29642
    = help: add `#![feature(custom_attribute)]` to the crate attributes to enable
 
-error[E0658]: The attribute `test` is currently unknown to the compiler and may have meaning added to it in the future
+error[E0658]: the attribute `test` is currently unknown to the compiler and may have meaning added to it in the future
   --> $DIR/param-attrs-builtin-attrs.rs:134:9
    |
 LL |         #[test] a: u32,