Diagnostics should start lowercase

33 files changed, 147 insertions, 147 deletions

diff --git a/src/test/ui/anon-params-deprecated.stderr b/src/test/ui/anon-params-deprecated.stderr
index e97dbc15f9c..8e4fa70d342 100644
--- a/src/test/ui/anon-params-deprecated.stderr
+++ b/src/test/ui/anon-params-deprecated.stderr
@@ -2,7 +2,7 @@ warning: anonymous parameters are deprecated and will be removed in the next edi
   --> $DIR/anon-params-deprecated.rs:9:12
    |
 LL |     fn foo(i32);
-   |            ^^^ help: Try naming the parameter or explicitly ignoring it: `_: i32`
+   |            ^^^ help: try naming the parameter or explicitly ignoring it: `_: i32`
    |
 note: lint level defined here
   --> $DIR/anon-params-deprecated.rs:1:9
@@ -16,7 +16,7 @@ warning: anonymous parameters are deprecated and will be removed in the next edi
   --> $DIR/anon-params-deprecated.rs:12:30
    |
 LL |     fn bar_with_default_impl(String, String) {}
-   |                              ^^^^^^ help: Try naming the parameter or explicitly ignoring it: `_: String`
+   |                              ^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: String`
    |
    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2018 edition!
    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
@@ -25,7 +25,7 @@ warning: anonymous parameters are deprecated and will be removed in the next edi
   --> $DIR/anon-params-deprecated.rs:12:38
    |
 LL |     fn bar_with_default_impl(String, String) {}
-   |                                      ^^^^^^ help: Try naming the parameter or explicitly ignoring it: `_: String`
+   |                                      ^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: String`
    |
    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2018 edition!
    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
diff --git a/src/test/ui/consts/const-eval/validate_uninhabited_zsts.stderr b/src/test/ui/consts/const-eval/validate_uninhabited_zsts.stderr
index bde7f2536fa..040c568beb3 100644
--- a/src/test/ui/consts/const-eval/validate_uninhabited_zsts.stderr
+++ b/src/test/ui/consts/const-eval/validate_uninhabited_zsts.stderr
@@ -34,7 +34,7 @@ LL |     unsafe { std::mem::transmute(()) }
    |              help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
    |
    = note: `#[warn(invalid_value)]` on by default
-   = note: The never type (`!`) has no valid value
+   = note: the `!` type has no valid value
 
 warning: the type `Empty` does not permit zero-initialization
   --> $DIR/validate_uninhabited_zsts.rs:17:35
diff --git a/src/test/ui/feature-gates/feature-gate-never_type.stderr b/src/test/ui/feature-gates/feature-gate-never_type.stderr
index d86ab99b82b..216615731e5 100644
--- a/src/test/ui/feature-gates/feature-gate-never_type.stderr
+++ b/src/test/ui/feature-gates/feature-gate-never_type.stderr
@@ -1,4 +1,4 @@
-error[E0658]: The `!` type is experimental
+error[E0658]: the `!` type is experimental
   --> $DIR/feature-gate-never_type.rs:7:17
    |
 LL | type Ma = (u32, !, i32);
@@ -7,7 +7,7 @@ LL | type Ma = (u32, !, i32);
    = note: for more information, see https://github.com/rust-lang/rust/issues/35121
    = help: add `#![feature(never_type)]` to the crate attributes to enable
 
-error[E0658]: The `!` type is experimental
+error[E0658]: the `!` type is experimental
   --> $DIR/feature-gate-never_type.rs:8:20
    |
 LL | type Meeshka = Vec<!>;
@@ -16,7 +16,7 @@ LL | type Meeshka = Vec<!>;
    = note: for more information, see https://github.com/rust-lang/rust/issues/35121
    = help: add `#![feature(never_type)]` to the crate attributes to enable
 
-error[E0658]: The `!` type is experimental
+error[E0658]: the `!` type is experimental
   --> $DIR/feature-gate-never_type.rs:9:24
    |
 LL | type Mow = &'static fn(!) -> !;
@@ -25,7 +25,7 @@ LL | type Mow = &'static fn(!) -> !;
    = note: for more information, see https://github.com/rust-lang/rust/issues/35121
    = help: add `#![feature(never_type)]` to the crate attributes to enable
 
-error[E0658]: The `!` type is experimental
+error[E0658]: the `!` type is experimental
   --> $DIR/feature-gate-never_type.rs:10:27
    |
 LL | type Skwoz = &'static mut !;
@@ -34,7 +34,7 @@ LL | type Skwoz = &'static mut !;
    = note: for more information, see https://github.com/rust-lang/rust/issues/35121
    = help: add `#![feature(never_type)]` to the crate attributes to enable
 
-error[E0658]: The `!` type is experimental
+error[E0658]: the `!` type is experimental
   --> $DIR/feature-gate-never_type.rs:13:16
    |
 LL |     type Wub = !;
diff --git a/src/test/ui/future-incompatible-lint-group.stderr b/src/test/ui/future-incompatible-lint-group.stderr
index 24e3a077ae6..1d958e5bfeb 100644
--- a/src/test/ui/future-incompatible-lint-group.stderr
+++ b/src/test/ui/future-incompatible-lint-group.stderr
@@ -2,7 +2,7 @@ error: anonymous parameters are deprecated and will be removed in the next editi
   --> $DIR/future-incompatible-lint-group.rs:4:10
    |
 LL |     fn f(u8) {}
-   |          ^^ help: Try naming the parameter or explicitly ignoring it: `_: u8`
+   |          ^^ help: try naming the parameter or explicitly ignoring it: `_: u8`
    |
 note: lint level defined here
   --> $DIR/future-incompatible-lint-group.rs:1:9
diff --git a/src/test/ui/issues/issue-45730.stderr b/src/test/ui/issues/issue-45730.stderr
index 3c400d6eefa..d4ddba52df1 100644
--- a/src/test/ui/issues/issue-45730.stderr
+++ b/src/test/ui/issues/issue-45730.stderr
@@ -6,7 +6,7 @@ LL |     let x: *const _ = 0 as _;
    |                            |
    |                            help: consider giving more type information
    |
-   = note: The type information given here is insufficient to check whether the pointer cast is valid
+   = note: the type information given here is insufficient to check whether the pointer cast is valid
 
 error[E0641]: cannot cast to a pointer of an unknown kind
   --> $DIR/issue-45730.rs:5:23
@@ -16,7 +16,7 @@ LL |     let x: *const _ = 0 as *const _;
    |                            |
    |                            help: consider giving more type information
    |
-   = note: The type information given here is insufficient to check whether the pointer cast is valid
+   = note: the type information given here is insufficient to check whether the pointer cast is valid
 
 error[E0641]: cannot cast to a pointer of an unknown kind
   --> $DIR/issue-45730.rs:8:13
@@ -26,7 +26,7 @@ LL |     let x = 0 as *const i32 as *const _ as *mut _;
    |                                            |
    |                                            help: consider giving more type information
    |
-   = note: The type information given here is insufficient to check whether the pointer cast is valid
+   = note: the type information given here is insufficient to check whether the pointer cast is valid
 
 error: aborting due to 3 previous errors
 
diff --git a/src/test/ui/lint/uninitialized-zeroed.stderr b/src/test/ui/lint/uninitialized-zeroed.stderr
index bdb5959953f..d451b827598 100644
--- a/src/test/ui/lint/uninitialized-zeroed.stderr
+++ b/src/test/ui/lint/uninitialized-zeroed.stderr
@@ -12,7 +12,7 @@ note: lint level defined here
    |
 LL | #![deny(invalid_value)]
    |         ^^^^^^^^^^^^^
-   = note: References must be non-null
+   = note: references must be non-null
 
 error: the type `&'static T` does not permit being left uninitialized
   --> $DIR/uninitialized-zeroed.rs:30:32
@@ -23,7 +23,7 @@ LL |         let _val: &'static T = mem::uninitialized();
    |                                this code causes undefined behavior when executed
    |                                help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
    |
-   = note: References must be non-null
+   = note: references must be non-null
 
 error: the type `Wrap<&'static T>` does not permit zero-initialization
   --> $DIR/uninitialized-zeroed.rs:32:38
@@ -34,7 +34,7 @@ LL |         let _val: Wrap<&'static T> = mem::zeroed();
    |                                      this code causes undefined behavior when executed
    |                                      help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
    |
-note: References must be non-null (in this struct field)
+note: references must be non-null (in this struct field)
   --> $DIR/uninitialized-zeroed.rs:18:18
    |
 LL | struct Wrap<T> { wrapped: T }
@@ -49,7 +49,7 @@ LL |         let _val: Wrap<&'static T> = mem::uninitialized();
    |                                      this code causes undefined behavior when executed
    |                                      help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
    |
-note: References must be non-null (in this struct field)
+note: references must be non-null (in this struct field)
   --> $DIR/uninitialized-zeroed.rs:18:18
    |
 LL | struct Wrap<T> { wrapped: T }
@@ -64,7 +64,7 @@ LL |         let _val: ! = mem::zeroed();
    |                       this code causes undefined behavior when executed
    |                       help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
    |
-   = note: The never type (`!`) has no valid value
+   = note: the `!` type has no valid value
 
 error: the type `!` does not permit being left uninitialized
   --> $DIR/uninitialized-zeroed.rs:41:23
@@ -75,7 +75,7 @@ LL |         let _val: ! = mem::uninitialized();
    |                       this code causes undefined behavior when executed
    |                       help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
    |
-   = note: The never type (`!`) has no valid value
+   = note: the `!` type has no valid value
 
 error: the type `(i32, !)` does not permit zero-initialization
   --> $DIR/uninitialized-zeroed.rs:43:30
@@ -86,7 +86,7 @@ LL |         let _val: (i32, !) = mem::zeroed();
    |                              this code causes undefined behavior when executed
    |                              help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
    |
-   = note: The never type (`!`) has no valid value
+   = note: the `!` type has no valid value
 
 error: the type `(i32, !)` does not permit being left uninitialized
   --> $DIR/uninitialized-zeroed.rs:44:30
@@ -97,7 +97,7 @@ LL |         let _val: (i32, !) = mem::uninitialized();
    |                              this code causes undefined behavior when executed
    |                              help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
    |
-   = note: The never type (`!`) has no valid value
+   = note: the `!` type has no valid value
 
 error: the type `Void` does not permit zero-initialization
   --> $DIR/uninitialized-zeroed.rs:46:26
@@ -130,7 +130,7 @@ LL |         let _val: &'static i32 = mem::zeroed();
    |                                  this code causes undefined behavior when executed
    |                                  help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
    |
-   = note: References must be non-null
+   = note: references must be non-null
 
 error: the type `&'static i32` does not permit being left uninitialized
   --> $DIR/uninitialized-zeroed.rs:50:34
@@ -141,7 +141,7 @@ LL |         let _val: &'static i32 = mem::uninitialized();
    |                                  this code causes undefined behavior when executed
    |                                  help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
    |
-   = note: References must be non-null
+   = note: references must be non-null
 
 error: the type `Ref` does not permit zero-initialization
   --> $DIR/uninitialized-zeroed.rs:52:25
@@ -152,7 +152,7 @@ LL |         let _val: Ref = mem::zeroed();
    |                         this code causes undefined behavior when executed
    |                         help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
    |
-note: References must be non-null (in this struct field)
+note: references must be non-null (in this struct field)
   --> $DIR/uninitialized-zeroed.rs:15:12
    |
 LL | struct Ref(&'static i32);
@@ -167,7 +167,7 @@ LL |         let _val: Ref = mem::uninitialized();
    |                         this code causes undefined behavior when executed
    |                         help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
    |
-note: References must be non-null (in this struct field)
+note: references must be non-null (in this struct field)
   --> $DIR/uninitialized-zeroed.rs:15:12
    |
 LL | struct Ref(&'static i32);
@@ -182,7 +182,7 @@ LL |         let _val: fn() = mem::zeroed();
    |                          this code causes undefined behavior when executed
    |                          help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
    |
-   = note: Function pointers must be non-null
+   = note: function pointers must be non-null
 
 error: the type `fn()` does not permit being left uninitialized
   --> $DIR/uninitialized-zeroed.rs:56:26
@@ -193,7 +193,7 @@ LL |         let _val: fn() = mem::uninitialized();
    |                          this code causes undefined behavior when executed
    |                          help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
    |
-   = note: Function pointers must be non-null
+   = note: function pointers must be non-null
 
 error: the type `Wrap<fn()>` does not permit zero-initialization
   --> $DIR/uninitialized-zeroed.rs:58:32
@@ -204,7 +204,7 @@ LL |         let _val: Wrap<fn()> = mem::zeroed();
    |                                this code causes undefined behavior when executed
    |                                help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
    |
-note: Function pointers must be non-null (in this struct field)
+note: function pointers must be non-null (in this struct field)
   --> $DIR/uninitialized-zeroed.rs:18:18
    |
 LL | struct Wrap<T> { wrapped: T }
@@ -219,7 +219,7 @@ LL |         let _val: Wrap<fn()> = mem::uninitialized();
    |                                this code causes undefined behavior when executed
    |                                help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
    |
-note: Function pointers must be non-null (in this struct field)
+note: function pointers must be non-null (in this struct field)
   --> $DIR/uninitialized-zeroed.rs:18:18
    |
 LL | struct Wrap<T> { wrapped: T }
@@ -234,7 +234,7 @@ LL |         let _val: WrapEnum<fn()> = mem::zeroed();
    |                                    this code causes undefined behavior when executed
    |                                    help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
    |
-note: Function pointers must be non-null (in this enum field)
+note: function pointers must be non-null (in this enum field)
   --> $DIR/uninitialized-zeroed.rs:19:28
    |
 LL | enum WrapEnum<T> { Wrapped(T) }
@@ -249,7 +249,7 @@ LL |         let _val: WrapEnum<fn()> = mem::uninitialized();
    |                                    this code causes undefined behavior when executed
    |                                    help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
    |
-note: Function pointers must be non-null (in this enum field)
+note: function pointers must be non-null (in this enum field)
   --> $DIR/uninitialized-zeroed.rs:19:28
    |
 LL | enum WrapEnum<T> { Wrapped(T) }
@@ -264,7 +264,7 @@ LL |         let _val: Wrap<(RefPair, i32)> = mem::zeroed();
    |                                          this code causes undefined behavior when executed
    |                                          help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
    |
-note: References must be non-null (in this struct field)
+note: references must be non-null (in this struct field)
   --> $DIR/uninitialized-zeroed.rs:16:16
    |
 LL | struct RefPair((&'static i32, i32));
@@ -279,7 +279,7 @@ LL |         let _val: Wrap<(RefPair, i32)> = mem::uninitialized();
    |                                          this code causes undefined behavior when executed
    |                                          help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
    |
-note: References must be non-null (in this struct field)
+note: references must be non-null (in this struct field)
   --> $DIR/uninitialized-zeroed.rs:16:16
    |
 LL | struct RefPair((&'static i32, i32));
@@ -316,7 +316,7 @@ LL |         let _val: *const dyn Send = mem::zeroed();
    |                                     this code causes undefined behavior when executed
    |                                     help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
    |
-   = note: The vtable of a wide raw pointer must be non-null
+   = note: the vtable of a wide raw pointer must be non-null
 
 error: the type `*const dyn std::marker::Send` does not permit being left uninitialized
   --> $DIR/uninitialized-zeroed.rs:71:37
@@ -327,7 +327,7 @@ LL |         let _val: *const dyn Send = mem::uninitialized();
    |                                     this code causes undefined behavior when executed
    |                                     help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
    |
-   = note: The vtable of a wide raw pointer must be non-null
+   = note: the vtable of a wide raw pointer must be non-null
 
 error: the type `bool` does not permit being left uninitialized
   --> $DIR/uninitialized-zeroed.rs:75:26
@@ -338,7 +338,7 @@ LL |         let _val: bool = mem::uninitialized();
    |                          this code causes undefined behavior when executed
    |                          help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
    |
-   = note: Booleans must be `true` or `false`
+   = note: booleans must be either `true` or `false`
 
 error: the type `Wrap<char>` does not permit being left uninitialized
   --> $DIR/uninitialized-zeroed.rs:78:32
@@ -349,7 +349,7 @@ LL |         let _val: Wrap<char> = mem::uninitialized();
    |                                this code causes undefined behavior when executed
    |                                help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
    |
-note: Characters must be a valid unicode codepoint (in this struct field)
+note: characters must be a valid Unicode codepoint (in this struct field)
   --> $DIR/uninitialized-zeroed.rs:18:18
    |
 LL | struct Wrap<T> { wrapped: T }
@@ -375,7 +375,7 @@ LL |         let _val: &'static i32 = mem::transmute(0usize);
    |                                  this code causes undefined behavior when executed
    |                                  help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
    |
-   = note: References must be non-null
+   = note: references must be non-null
 
 error: the type `&'static [i32]` does not permit zero-initialization
   --> $DIR/uninitialized-zeroed.rs:85:36
@@ -386,7 +386,7 @@ LL |         let _val: &'static [i32] = mem::transmute((0usize, 0usize));
    |                                    this code causes undefined behavior when executed
    |                                    help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
    |
-   = note: References must be non-null
+   = note: references must be non-null
 
 error: the type `std::num::NonZeroU32` does not permit zero-initialization
   --> $DIR/uninitialized-zeroed.rs:86:32
@@ -430,7 +430,7 @@ LL |         let _val: bool = MaybeUninit::uninit().assume_init();
    |                          this code causes undefined behavior when executed
    |                          help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
    |
-   = note: Booleans must be `true` or `false`
+   = note: booleans must be either `true` or `false`
 
 error: aborting due to 35 previous errors
 
diff --git a/src/test/ui/nll/closure-requirements/escape-argument-callee.stderr b/src/test/ui/nll/closure-requirements/escape-argument-callee.stderr
index 3d79ff0b706..b4e18c229fd 100644
--- a/src/test/ui/nll/closure-requirements/escape-argument-callee.stderr
+++ b/src/test/ui/nll/closure-requirements/escape-argument-callee.stderr
@@ -1,4 +1,4 @@
-note: No external requirements
+note: no external requirements
   --> $DIR/escape-argument-callee.rs:26:38
    |
 LL |         let mut closure = expect_sig(|p, y| *p = y);
@@ -18,7 +18,7 @@ LL |         let mut closure = expect_sig(|p, y| *p = y);
    |                                       |  has type `&'1 i32`
    |                                       has type `&'_#2r mut &'2 i32`
 
-note: No external requirements
+note: no external requirements
   --> $DIR/escape-argument-callee.rs:20:1
    |
 LL | / fn test() {
diff --git a/src/test/ui/nll/closure-requirements/escape-argument.stderr b/src/test/ui/nll/closure-requirements/escape-argument.stderr
index 37f04af6378..533a17bdd12 100644
--- a/src/test/ui/nll/closure-requirements/escape-argument.stderr
+++ b/src/test/ui/nll/closure-requirements/escape-argument.stderr
@@ -1,4 +1,4 @@
-note: No external requirements
+note: no external requirements
   --> $DIR/escape-argument.rs:26:38
    |
 LL |         let mut closure = expect_sig(|p, y| *p = y);
@@ -9,7 +9,7 @@ LL |         let mut closure = expect_sig(|p, y| *p = y);
                for<'r, 's> extern "rust-call" fn((&ReLateBound(DebruijnIndex(0), BrNamed('r)) mut &ReLateBound(DebruijnIndex(0), BrNamed('s)) i32, &ReLateBound(DebruijnIndex(0), BrNamed('s)) i32)),
            ]
 
-note: No external requirements
+note: no external requirements
   --> $DIR/escape-argument.rs:20:1
    |
 LL | / fn test() {
diff --git a/src/test/ui/nll/closure-requirements/escape-upvar-nested.stderr b/src/test/ui/nll/closure-requirements/escape-upvar-nested.stderr
index 810c0286cf2..60d02066e26 100644
--- a/src/test/ui/nll/closure-requirements/escape-upvar-nested.stderr
+++ b/src/test/ui/nll/closure-requirements/escape-upvar-nested.stderr
@@ -1,4 +1,4 @@
-note: External requirements
+note: external requirements
   --> $DIR/escape-upvar-nested.rs:21:32
    |
 LL |             let mut closure1 = || p = &y;
@@ -13,7 +13,7 @@ LL |             let mut closure1 = || p = &y;
    = note: number of external vids: 4
    = note: where '_#1r: '_#3r
 
-note: External requirements
+note: external requirements
   --> $DIR/escape-upvar-nested.rs:20:27
    |
 LL |           let mut closure = || {
@@ -32,7 +32,7 @@ LL | |         };
    = note: number of external vids: 4
    = note: where '_#1r: '_#3r
 
-note: No external requirements
+note: no external requirements
   --> $DIR/escape-upvar-nested.rs:13:1
    |
 LL | / fn test() {
diff --git a/src/test/ui/nll/closure-requirements/escape-upvar-ref.stderr b/src/test/ui/nll/closure-requirements/escape-upvar-ref.stderr
index bf042769a00..f64ccf14ac4 100644
--- a/src/test/ui/nll/closure-requirements/escape-upvar-ref.stderr
+++ b/src/test/ui/nll/closure-requirements/escape-upvar-ref.stderr
@@ -1,4 +1,4 @@
-note: External requirements
+note: external requirements
   --> $DIR/escape-upvar-ref.rs:23:27
    |
 LL |         let mut closure = || p = &y;
@@ -13,7 +13,7 @@ LL |         let mut closure = || p = &y;
    = note: number of external vids: 4
    = note: where '_#1r: '_#3r
 
-note: No external requirements
+note: no external requirements
   --> $DIR/escape-upvar-ref.rs:17:1
    |
 LL | / fn test() {
diff --git a/src/test/ui/nll/closure-requirements/propagate-approximated-fail-no-postdom.stderr b/src/test/ui/nll/closure-requirements/propagate-approximated-fail-no-postdom.stderr
index 4e3aa352fff..e1e0cdc153a 100644
--- a/src/test/ui/nll/closure-requirements/propagate-approximated-fail-no-postdom.stderr
+++ b/src/test/ui/nll/closure-requirements/propagate-approximated-fail-no-postdom.stderr
@@ -1,4 +1,4 @@
-note: No external requirements
+note: no external requirements
   --> $DIR/propagate-approximated-fail-no-postdom.rs:43:9
    |
 LL | /         |_outlives1, _outlives2, _outlives3, x, y| {
@@ -27,7 +27,7 @@ LL |         |_outlives1, _outlives2, _outlives3, x, y| {
 LL |             demand_y(x, y, p)
    |             ^^^^^^^^^^^^^^^^^ argument requires that `'1` must outlive `'2`
 
-note: No external requirements
+note: no external requirements
   --> $DIR/propagate-approximated-fail-no-postdom.rs:38:1
    |
 LL | / fn supply<'a, 'b, 'c>(cell_a: Cell<&'a u32>, cell_b: Cell<&'b u32>, cell_c: Cell<&'c u32>) {
diff --git a/src/test/ui/nll/closure-requirements/propagate-approximated-ref.stderr b/src/test/ui/nll/closure-requirements/propagate-approximated-ref.stderr
index cd61b8b5e55..b6535024a4a 100644
--- a/src/test/ui/nll/closure-requirements/propagate-approximated-ref.stderr
+++ b/src/test/ui/nll/closure-requirements/propagate-approximated-ref.stderr
@@ -1,4 +1,4 @@
-note: External requirements
+note: external requirements
   --> $DIR/propagate-approximated-ref.rs:43:47
    |
 LL |       establish_relationships(&cell_a, &cell_b, |_outlives1, _outlives2, x, y| {
@@ -18,7 +18,7 @@ LL | |     });
    = note: number of external vids: 5
    = note: where '_#1r: '_#2r
 
-note: No external requirements
+note: no external requirements
   --> $DIR/propagate-approximated-ref.rs:42:1
    |
 LL | / fn supply<'a, 'b>(cell_a: Cell<&'a u32>, cell_b: Cell<&'b u32>) {
diff --git a/src/test/ui/nll/closure-requirements/propagate-approximated-shorter-to-static-comparing-against-free.stderr b/src/test/ui/nll/closure-requirements/propagate-approximated-shorter-to-static-comparing-against-free.stderr
index 259140c2e5a..708e50de570 100644
--- a/src/test/ui/nll/closure-requirements/propagate-approximated-shorter-to-static-comparing-against-free.stderr
+++ b/src/test/ui/nll/closure-requirements/propagate-approximated-shorter-to-static-comparing-against-free.stderr
@@ -1,4 +1,4 @@
-note: No external requirements
+note: no external requirements
   --> $DIR/propagate-approximated-shorter-to-static-comparing-against-free.rs:21:15
    |
 LL |       foo(cell, |cell_a, cell_x| {
@@ -23,7 +23,7 @@ LL |     foo(cell, |cell_a, cell_x| {
 LL |         cell_a.set(cell_x.get()); // forces 'x: 'a, error in closure
    |         ^^^^^^^^^^^^^^^^^^^^^^^^ `cell_x` escapes the closure body here
 
-note: No external requirements
+note: no external requirements
   --> $DIR/propagate-approximated-shorter-to-static-comparing-against-free.rs:18:1
    |
 LL | / fn case1() {
@@ -37,7 +37,7 @@ LL | | }
    |
    = note: defining type: case1
 
-note: External requirements
+note: external requirements
   --> $DIR/propagate-approximated-shorter-to-static-comparing-against-free.rs:35:15
    |
 LL |       foo(cell, |cell_a, cell_x| {
@@ -53,7 +53,7 @@ LL | |     })
    = note: number of external vids: 2
    = note: where '_#1r: '_#0r
 
-note: No external requirements
+note: no external requirements
   --> $DIR/propagate-approximated-shorter-to-static-comparing-against-free.rs:28:1
    |
 LL | / fn case2() {
diff --git a/src/test/ui/nll/closure-requirements/propagate-approximated-shorter-to-static-no-bound.stderr b/src/test/ui/nll/closure-requirements/propagate-approximated-shorter-to-static-no-bound.stderr
index b3dd682e4f0..17d33e82ba7 100644
--- a/src/test/ui/nll/closure-requirements/propagate-approximated-shorter-to-static-no-bound.stderr
+++ b/src/test/ui/nll/closure-requirements/propagate-approximated-shorter-to-static-no-bound.stderr
@@ -1,4 +1,4 @@
-note: External requirements
+note: external requirements
   --> $DIR/propagate-approximated-shorter-to-static-no-bound.rs:32:47
    |
 LL |       establish_relationships(&cell_a, &cell_b, |_outlives, x, y| {
@@ -19,7 +19,7 @@ LL | |     });
    = note: number of external vids: 4
    = note: where '_#1r: '_#0r
 
-note: No external requirements
+note: no external requirements
   --> $DIR/propagate-approximated-shorter-to-static-no-bound.rs:31:1
    |
 LL | / fn supply<'a, 'b>(cell_a: Cell<&'a u32>, cell_b: Cell<&'b u32>) {
diff --git a/src/test/ui/nll/closure-requirements/propagate-approximated-shorter-to-static-wrong-bound.stderr b/src/test/ui/nll/closure-requirements/propagate-approximated-shorter-to-static-wrong-bound.stderr
index ab12d08f7b7..5dce8d087d6 100644
--- a/src/test/ui/nll/closure-requirements/propagate-approximated-shorter-to-static-wrong-bound.stderr
+++ b/src/test/ui/nll/closure-requirements/propagate-approximated-shorter-to-static-wrong-bound.stderr
@@ -1,4 +1,4 @@
-note: External requirements
+note: external requirements
   --> $DIR/propagate-approximated-shorter-to-static-wrong-bound.rs:35:47
    |
 LL |       establish_relationships(&cell_a, &cell_b, |_outlives1, _outlives2, x, y| {
@@ -19,7 +19,7 @@ LL | |     });
    = note: number of external vids: 5
    = note: where '_#1r: '_#0r
 
-note: No external requirements
+note: no external requirements
   --> $DIR/propagate-approximated-shorter-to-static-wrong-bound.rs:34:1
    |
 LL | / fn supply<'a, 'b>(cell_a: Cell<&'a u32>, cell_b: Cell<&'b u32>) {
diff --git a/src/test/ui/nll/closure-requirements/propagate-approximated-val.stderr b/src/test/ui/nll/closure-requirements/propagate-approximated-val.stderr
index b2209e9cab0..5c5d510805b 100644
--- a/src/test/ui/nll/closure-requirements/propagate-approximated-val.stderr
+++ b/src/test/ui/nll/closure-requirements/propagate-approximated-val.stderr
@@ -1,4 +1,4 @@
-note: External requirements
+note: external requirements
   --> $DIR/propagate-approximated-val.rs:36:45
    |
 LL |       establish_relationships(cell_a, cell_b, |outlives1, outlives2, x, y| {
@@ -18,7 +18,7 @@ LL | |     });
    = note: number of external vids: 5
    = note: where '_#1r: '_#2r
 
-note: No external requirements
+note: no external requirements
   --> $DIR/propagate-approximated-val.rs:35:1
    |
 LL | / fn test<'a, 'b>(cell_a: Cell<&'a u32>, cell_b: Cell<&'b u32>) {
diff --git a/src/test/ui/nll/closure-requirements/propagate-despite-same-free-region.stderr b/src/test/ui/nll/closure-requirements/propagate-despite-same-free-region.stderr
index 55ee515a3a8..c111e651832 100644
--- a/src/test/ui/nll/closure-requirements/propagate-despite-same-free-region.stderr
+++ b/src/test/ui/nll/closure-requirements/propagate-despite-same-free-region.stderr
@@ -1,4 +1,4 @@
-note: External requirements
+note: external requirements
   --> $DIR/propagate-despite-same-free-region.rs:42:9
    |
 LL | /         |_outlives1, _outlives2, x, y| {
@@ -16,7 +16,7 @@ LL | |         },
    = note: number of external vids: 4
    = note: where '_#1r: '_#2r
 
-note: No external requirements
+note: no external requirements
   --> $DIR/propagate-despite-same-free-region.rs:39:1
    |
 LL | / fn supply<'a>(cell_a: Cell<&'a u32>) {
diff --git a/src/test/ui/nll/closure-requirements/propagate-fail-to-approximate-longer-no-bounds.stderr b/src/test/ui/nll/closure-requirements/propagate-fail-to-approximate-longer-no-bounds.stderr
index 1c29af8c422..52df46ed345 100644
--- a/src/test/ui/nll/closure-requirements/propagate-fail-to-approximate-longer-no-bounds.stderr
+++ b/src/test/ui/nll/closure-requirements/propagate-fail-to-approximate-longer-no-bounds.stderr
@@ -1,4 +1,4 @@
-note: No external requirements
+note: no external requirements
   --> $DIR/propagate-fail-to-approximate-longer-no-bounds.rs:35:47
    |
 LL |       establish_relationships(&cell_a, &cell_b, |_outlives, x, y| {
@@ -27,7 +27,7 @@ LL |         // Only works if 'x: 'y:
 LL |         demand_y(x, y, x.get())
    |         ^^^^^^^^^^^^^^^^^^^^^^^ argument requires that `'1` must outlive `'2`
 
-note: No external requirements
+note: no external requirements
   --> $DIR/propagate-fail-to-approximate-longer-no-bounds.rs:34:1
    |
 LL | / fn supply<'a, 'b>(cell_a: Cell<&'a u32>, cell_b: Cell<&'b u32>) {
diff --git a/src/test/ui/nll/closure-requirements/propagate-fail-to-approximate-longer-wrong-bounds.stderr b/src/test/ui/nll/closure-requirements/propagate-fail-to-approximate-longer-wrong-bounds.stderr
index afa0e9f619d..0270cc40de6 100644
--- a/src/test/ui/nll/closure-requirements/propagate-fail-to-approximate-longer-wrong-bounds.stderr
+++ b/src/test/ui/nll/closure-requirements/propagate-fail-to-approximate-longer-wrong-bounds.stderr
@@ -1,4 +1,4 @@
-note: No external requirements
+note: no external requirements
   --> $DIR/propagate-fail-to-approximate-longer-wrong-bounds.rs:39:47
    |
 LL |       establish_relationships(&cell_a, &cell_b, |_outlives1, _outlives2, x, y| {
@@ -27,7 +27,7 @@ LL |         // Only works if 'x: 'y:
 LL |         demand_y(x, y, x.get())
    |         ^^^^^^^^^^^^^^^^^^^^^^^ argument requires that `'1` must outlive `'2`
 
-note: No external requirements
+note: no external requirements
   --> $DIR/propagate-fail-to-approximate-longer-wrong-bounds.rs:38:1
    |
 LL | / fn supply<'a, 'b>(cell_a: Cell<&'a u32>, cell_b: Cell<&'b u32>) {
diff --git a/src/test/ui/nll/closure-requirements/propagate-from-trait-match.stderr b/src/test/ui/nll/closure-requirements/propagate-from-trait-match.stderr
index 0dbb530e698..5317bb6a1b1 100644
--- a/src/test/ui/nll/closure-requirements/propagate-from-trait-match.stderr
+++ b/src/test/ui/nll/closure-requirements/propagate-from-trait-match.stderr
@@ -1,4 +1,4 @@
-note: External requirements
+note: external requirements
   --> $DIR/propagate-from-trait-match.rs:32:36
    |
 LL |       establish_relationships(value, |value| {
@@ -18,7 +18,7 @@ LL | |     });
    = note: number of external vids: 2
    = note: where T: '_#1r
 
-note: No external requirements
+note: no external requirements
   --> $DIR/propagate-from-trait-match.rs:28:1
    |
 LL | / fn supply<'a, T>(value: T)
diff --git a/src/test/ui/nll/closure-requirements/return-wrong-bound-region.stderr b/src/test/ui/nll/closure-requirements/return-wrong-bound-region.stderr
index ca794d92666..79ed1501524 100644
--- a/src/test/ui/nll/closure-requirements/return-wrong-bound-region.stderr
+++ b/src/test/ui/nll/closure-requirements/return-wrong-bound-region.stderr
@@ -1,4 +1,4 @@
-note: No external requirements
+note: no external requirements
   --> $DIR/return-wrong-bound-region.rs:11:16
    |
 LL |     expect_sig(|a, b| b); // ought to return `a`
@@ -18,7 +18,7 @@ LL |     expect_sig(|a, b| b); // ought to return `a`
    |                 |  has type `&'1 i32`
    |                 has type `&'2 i32`
 
-note: No external requirements
+note: no external requirements
   --> $DIR/return-wrong-bound-region.rs:10:1
    |
 LL | / fn test() {
diff --git a/src/test/ui/nll/ty-outlives/projection-no-regions-closure.stderr b/src/test/ui/nll/ty-outlives/projection-no-regions-closure.stderr
index c825227cdad..bff8c662d0d 100644
--- a/src/test/ui/nll/ty-outlives/projection-no-regions-closure.stderr
+++ b/src/test/ui/nll/ty-outlives/projection-no-regions-closure.stderr
@@ -1,4 +1,4 @@
-note: External requirements
+note: external requirements
   --> $DIR/projection-no-regions-closure.rs:25:23
    |
 LL |     with_signature(x, |mut y| Box::new(y.next()))
@@ -11,7 +11,7 @@ LL |     with_signature(x, |mut y| Box::new(y.next()))
    = note: number of external vids: 3
    = note: where <T as std::iter::Iterator>::Item: '_#2r
 
-note: No external requirements
+note: no external requirements
   --> $DIR/projection-no-regions-closure.rs:21:1
    |
 LL | / fn no_region<'a, T>(x: Box<T>) -> Box<dyn Anything + 'a>
@@ -33,7 +33,7 @@ LL |     with_signature(x, |mut y| Box::new(y.next()))
    |
    = help: consider adding an explicit lifetime bound `<T as std::iter::Iterator>::Item: ReEarlyBound(0, 'a)`...
 
-note: External requirements
+note: external requirements
   --> $DIR/projection-no-regions-closure.rs:34:23
    |
 LL |     with_signature(x, |mut y| Box::new(y.next()))
@@ -46,7 +46,7 @@ LL |     with_signature(x, |mut y| Box::new(y.next()))
    = note: number of external vids: 3
    = note: where <T as std::iter::Iterator>::Item: '_#2r
 
-note: No external requirements
+note: no external requirements
   --> $DIR/projection-no-regions-closure.rs:30:1
    |
 LL | / fn correct_region<'a, T>(x: Box<T>) -> Box<dyn Anything + 'a>
@@ -59,7 +59,7 @@ LL | | }
    |
    = note: defining type: correct_region::<'_#1r, T>
 
-note: External requirements
+note: external requirements
   --> $DIR/projection-no-regions-closure.rs:42:23
    |
 LL |     with_signature(x, |mut y| Box::new(y.next()))
@@ -72,7 +72,7 @@ LL |     with_signature(x, |mut y| Box::new(y.next()))
    = note: number of external vids: 4
    = note: where <T as std::iter::Iterator>::Item: '_#3r
 
-note: No external requirements
+note: no external requirements
   --> $DIR/projection-no-regions-closure.rs:38:1
    |
 LL | / fn wrong_region<'a, 'b, T>(x: Box<T>) -> Box<dyn Anything + 'a>
@@ -94,7 +94,7 @@ LL |     with_signature(x, |mut y| Box::new(y.next()))
    |
    = help: consider adding an explicit lifetime bound `<T as std::iter::Iterator>::Item: ReEarlyBound(0, 'a)`...
 
-note: External requirements
+note: external requirements
   --> $DIR/projection-no-regions-closure.rs:52:23
    |
 LL |     with_signature(x, |mut y| Box::new(y.next()))
@@ -107,7 +107,7 @@ LL |     with_signature(x, |mut y| Box::new(y.next()))
    = note: number of external vids: 4
    = note: where <T as std::iter::Iterator>::Item: '_#3r
 
-note: No external requirements
+note: no external requirements
   --> $DIR/projection-no-regions-closure.rs:47:1
    |
 LL | / fn outlives_region<'a, 'b, T>(x: Box<T>) -> Box<dyn Anything + 'a>
diff --git a/src/test/ui/nll/ty-outlives/projection-one-region-closure.stderr b/src/test/ui/nll/ty-outlives/projection-one-region-closure.stderr
index 7226c520bf1..6d1fbcb8f5b 100644
--- a/src/test/ui/nll/ty-outlives/projection-one-region-closure.stderr
+++ b/src/test/ui/nll/ty-outlives/projection-one-region-closure.stderr
@@ -1,4 +1,4 @@
-note: External requirements
+note: external requirements
   --> $DIR/projection-one-region-closure.rs:45:29
    |
 LL |     with_signature(cell, t, |cell, t| require(cell, t));
@@ -13,7 +13,7 @@ LL |     with_signature(cell, t, |cell, t| require(cell, t));
    = note: where T: '_#2r
    = note: where '_#1r: '_#2r
 
-note: No external requirements
+note: no external requirements
   --> $DIR/projection-one-region-closure.rs:41:1
    |
 LL | / fn no_relationships_late<'a, 'b, T>(cell: Cell<&'a ()>, t: T)
@@ -48,7 +48,7 @@ LL |     with_signature(cell, t, |cell, t| require(cell, t));
    |
    = help: consider adding the following bound: `'b: 'a`
 
-note: External requirements
+note: external requirements
   --> $DIR/projection-one-region-closure.rs:56:29
    |
 LL |     with_signature(cell, t, |cell, t| require(cell, t));
@@ -62,7 +62,7 @@ LL |     with_signature(cell, t, |cell, t| require(cell, t));
    = note: where T: '_#3r
    = note: where '_#2r: '_#3r
 
-note: No external requirements
+note: no external requirements
   --> $DIR/projection-one-region-closure.rs:51:1
    |
 LL | / fn no_relationships_early<'a, 'b, T>(cell: Cell<&'a ()>, t: T)
@@ -97,7 +97,7 @@ LL |     with_signature(cell, t, |cell, t| require(cell, t));
    |
    = help: consider adding the following bound: `'b: 'a`
 
-note: External requirements
+note: external requirements
   --> $DIR/projection-one-region-closure.rs:70:29
    |
 LL |     with_signature(cell, t, |cell, t| require(cell, t));
@@ -110,7 +110,7 @@ LL |     with_signature(cell, t, |cell, t| require(cell, t));
    = note: number of external vids: 4
    = note: where <T as Anything<ReClosureBound('_#2r)>>::AssocType: '_#3r
 
-note: No external requirements
+note: no external requirements
   --> $DIR/projection-one-region-closure.rs:62:1
    |
 LL | / fn projection_outlives<'a, 'b, T>(cell: Cell<&'a ()>, t: T)
@@ -124,7 +124,7 @@ LL | | }
    |
    = note: defining type: projection_outlives::<'_#1r, '_#2r, T>
 
-note: External requirements
+note: external requirements
   --> $DIR/projection-one-region-closure.rs:80:29
    |
 LL |     with_signature(cell, t, |cell, t| require(cell, t));
@@ -138,7 +138,7 @@ LL |     with_signature(cell, t, |cell, t| require(cell, t));
    = note: where T: '_#3r
    = note: where '_#2r: '_#3r
 
-note: No external requirements
+note: no external requirements
   --> $DIR/projection-one-region-closure.rs:74:1
    |
 LL | / fn elements_outlive<'a, 'b, T>(cell: Cell<&'a ()>, t: T)
diff --git a/src/test/ui/nll/ty-outlives/projection-one-region-trait-bound-closure.stderr b/src/test/ui/nll/ty-outlives/projection-one-region-trait-bound-closure.stderr
index 655995c1b80..59d8aa484bd 100644
--- a/src/test/ui/nll/ty-outlives/projection-one-region-trait-bound-closure.stderr
+++ b/src/test/ui/nll/ty-outlives/projection-one-region-trait-bound-closure.stderr
@@ -1,4 +1,4 @@
-note: External requirements
+note: external requirements
   --> $DIR/projection-one-region-trait-bound-closure.rs:37:29
    |
 LL |     with_signature(cell, t, |cell, t| require(cell, t));
@@ -12,7 +12,7 @@ LL |     with_signature(cell, t, |cell, t| require(cell, t));
    = note: number of external vids: 4
    = note: where '_#1r: '_#2r
 
-note: No external requirements
+note: no external requirements
   --> $DIR/projection-one-region-trait-bound-closure.rs:33:1
    |
 LL | / fn no_relationships_late<'a, 'b, T>(cell: Cell<&'a ()>, t: T)
@@ -39,7 +39,7 @@ LL |     with_signature(cell, t, |cell, t| require(cell, t));
    |
    = help: consider adding the following bound: `'b: 'a`
 
-note: External requirements
+note: external requirements
   --> $DIR/projection-one-region-trait-bound-closure.rs:47:29
    |
 LL |     with_signature(cell, t, |cell, t| require(cell, t));
@@ -52,7 +52,7 @@ LL |     with_signature(cell, t, |cell, t| require(cell, t));
    = note: number of external vids: 4
    = note: where '_#2r: '_#3r
 
-note: No external requirements
+note: no external requirements
   --> $DIR/projection-one-region-trait-bound-closure.rs:42:1
    |
 LL | / fn no_relationships_early<'a, 'b, T>(cell: Cell<&'a ()>, t: T)
@@ -79,7 +79,7 @@ LL |     with_signature(cell, t, |cell, t| require(cell, t));
    |
    = help: consider adding the following bound: `'b: 'a`
 
-note: External requirements
+note: external requirements
   --> $DIR/projection-one-region-trait-bound-closure.rs:60:29
    |
 LL |     with_signature(cell, t, |cell, t| require(cell, t));
@@ -92,7 +92,7 @@ LL |     with_signature(cell, t, |cell, t| require(cell, t));
    = note: number of external vids: 4
    = note: where <T as Anything<ReClosureBound('_#2r)>>::AssocType: '_#3r
 
-note: No external requirements
+note: no external requirements
   --> $DIR/projection-one-region-trait-bound-closure.rs:52:1
    |
 LL | / fn projection_outlives<'a, 'b, T>(cell: Cell<&'a ()>, t: T)
@@ -106,7 +106,7 @@ LL | | }
    |
    = note: defining type: projection_outlives::<'_#1r, '_#2r, T>
 
-note: External requirements
+note: external requirements
   --> $DIR/projection-one-region-trait-bound-closure.rs:69:29
    |
 LL |     with_signature(cell, t, |cell, t| require(cell, t));
@@ -119,7 +119,7 @@ LL |     with_signature(cell, t, |cell, t| require(cell, t));
    = note: number of external vids: 4
    = note: where '_#2r: '_#3r
 
-note: No external requirements
+note: no external requirements
   --> $DIR/projection-one-region-trait-bound-closure.rs:64:1
    |
 LL | / fn elements_outlive<'a, 'b, T>(cell: Cell<&'a ()>, t: T)
@@ -133,7 +133,7 @@ LL | | }
    |
    = note: defining type: elements_outlive::<'_#1r, '_#2r, T>
 
-note: External requirements
+note: external requirements
   --> $DIR/projection-one-region-trait-bound-closure.rs:81:29
    |
 LL |     with_signature(cell, t, |cell, t| require(cell, t));
@@ -146,7 +146,7 @@ LL |     with_signature(cell, t, |cell, t| require(cell, t));
    = note: number of external vids: 3
    = note: where '_#1r: '_#2r
 
-note: No external requirements
+note: no external requirements
   --> $DIR/projection-one-region-trait-bound-closure.rs:73:1
    |
 LL | / fn one_region<'a, T>(cell: Cell<&'a ()>, t: T)
diff --git a/src/test/ui/nll/ty-outlives/projection-one-region-trait-bound-static-closure.stderr b/src/test/ui/nll/ty-outlives/projection-one-region-trait-bound-static-closure.stderr
index 2fb07b9279a..c3b924577ab 100644
--- a/src/test/ui/nll/ty-outlives/projection-one-region-trait-bound-static-closure.stderr
+++ b/src/test/ui/nll/ty-outlives/projection-one-region-trait-bound-static-closure.stderr
@@ -1,4 +1,4 @@
-note: No external requirements
+note: no external requirements
   --> $DIR/projection-one-region-trait-bound-static-closure.rs:36:29
    |
 LL |     with_signature(cell, t, |cell, t| require(cell, t));
@@ -10,7 +10,7 @@ LL |     with_signature(cell, t, |cell, t| require(cell, t));
            ]
    = note: late-bound region is '_#3r
 
-note: No external requirements
+note: no external requirements
   --> $DIR/projection-one-region-trait-bound-static-closure.rs:32:1
    |
 LL | / fn no_relationships_late<'a, 'b, T>(cell: Cell<&'a ()>, t: T)
@@ -23,7 +23,7 @@ LL | | }
    |
    = note: defining type: no_relationships_late::<'_#1r, T>
 
-note: No external requirements
+note: no external requirements
   --> $DIR/projection-one-region-trait-bound-static-closure.rs:45:29
    |
 LL |     with_signature(cell, t, |cell, t| require(cell, t));
@@ -34,7 +34,7 @@ LL |     with_signature(cell, t, |cell, t| require(cell, t));
                extern "rust-call" fn((std::cell::Cell<&'_#3r ()>, T)),
            ]
 
-note: No external requirements
+note: no external requirements
   --> $DIR/projection-one-region-trait-bound-static-closure.rs:40:1
    |
 LL | / fn no_relationships_early<'a, 'b, T>(cell: Cell<&'a ()>, t: T)
@@ -48,7 +48,7 @@ LL | | }
    |
    = note: defining type: no_relationships_early::<'_#1r, '_#2r, T>
 
-note: No external requirements
+note: no external requirements
   --> $DIR/projection-one-region-trait-bound-static-closure.rs:64:29
    |
 LL |     with_signature(cell, t, |cell, t| require(cell, t));
@@ -59,7 +59,7 @@ LL |     with_signature(cell, t, |cell, t| require(cell, t));
                extern "rust-call" fn((std::cell::Cell<&'_#3r ()>, T)),
            ]
 
-note: No external requirements
+note: no external requirements
   --> $DIR/projection-one-region-trait-bound-static-closure.rs:49:1
    |
 LL | / fn projection_outlives<'a, 'b, T>(cell: Cell<&'a ()>, t: T)
@@ -73,7 +73,7 @@ LL | | }
    |
    = note: defining type: projection_outlives::<'_#1r, '_#2r, T>
 
-note: No external requirements
+note: no external requirements
   --> $DIR/projection-one-region-trait-bound-static-closure.rs:73:29
    |
 LL |     with_signature(cell, t, |cell, t| require(cell, t));
@@ -84,7 +84,7 @@ LL |     with_signature(cell, t, |cell, t| require(cell, t));
                extern "rust-call" fn((std::cell::Cell<&'_#3r ()>, T)),
            ]
 
-note: No external requirements
+note: no external requirements
   --> $DIR/projection-one-region-trait-bound-static-closure.rs:68:1
    |
 LL | / fn elements_outlive<'a, 'b, T>(cell: Cell<&'a ()>, t: T)
@@ -98,7 +98,7 @@ LL | | }
    |
    = note: defining type: elements_outlive::<'_#1r, '_#2r, T>
 
-note: No external requirements
+note: no external requirements
   --> $DIR/projection-one-region-trait-bound-static-closure.rs:85:29
    |
 LL |     with_signature(cell, t, |cell, t| require(cell, t));
@@ -109,7 +109,7 @@ LL |     with_signature(cell, t, |cell, t| require(cell, t));
                extern "rust-call" fn((std::cell::Cell<&'_#2r ()>, T)),
            ]
 
-note: No external requirements
+note: no external requirements
   --> $DIR/projection-one-region-trait-bound-static-closure.rs:77:1
    |
 LL | / fn one_region<'a, T>(cell: Cell<&'a ()>, t: T)
diff --git a/src/test/ui/nll/ty-outlives/projection-two-region-trait-bound-closure.stderr b/src/test/ui/nll/ty-outlives/projection-two-region-trait-bound-closure.stderr
index 501a55e3105..1bd97c1caa4 100644
--- a/src/test/ui/nll/ty-outlives/projection-two-region-trait-bound-closure.stderr
+++ b/src/test/ui/nll/ty-outlives/projection-two-region-trait-bound-closure.stderr
@@ -1,4 +1,4 @@
-note: External requirements
+note: external requirements
   --> $DIR/projection-two-region-trait-bound-closure.rs:38:29
    |
 LL |     with_signature(cell, t, |cell, t| require(cell, t));
@@ -12,7 +12,7 @@ LL |     with_signature(cell, t, |cell, t| require(cell, t));
    = note: number of external vids: 5
    = note: where <T as Anything<ReClosureBound('_#1r), ReClosureBound('_#2r)>>::AssocType: '_#3r
 
-note: No external requirements
+note: no external requirements
   --> $DIR/projection-two-region-trait-bound-closure.rs:34:1
    |
 LL | / fn no_relationships_late<'a, 'b, 'c, T>(cell: Cell<&'a ()>, t: T)
@@ -34,7 +34,7 @@ LL |     with_signature(cell, t, |cell, t| require(cell, t));
    |
    = help: consider adding an explicit lifetime bound `<T as Anything<'_#5r, '_#6r>>::AssocType: ReFree(DefId(0:17 ~ projection_two_region_trait_bound_closure[317d]::no_relationships_late[0]), BrNamed(DefId(0:18 ~ projection_two_region_trait_bound_closure[317d]::no_relationships_late[0]::'a[0]), 'a))`...
 
-note: External requirements
+note: external requirements
   --> $DIR/projection-two-region-trait-bound-closure.rs:48:29
    |
 LL |     with_signature(cell, t, |cell, t| require(cell, t));
@@ -47,7 +47,7 @@ LL |     with_signature(cell, t, |cell, t| require(cell, t));
    = note: number of external vids: 5
    = note: where <T as Anything<ReClosureBound('_#2r), ReClosureBound('_#3r)>>::AssocType: '_#4r
 
-note: No external requirements
+note: no external requirements
   --> $DIR/projection-two-region-trait-bound-closure.rs:43:1
    |
 LL | / fn no_relationships_early<'a, 'b, 'c, T>(cell: Cell<&'a ()>, t: T)
@@ -69,7 +69,7 @@ LL |     with_signature(cell, t, |cell, t| require(cell, t));
    |
    = help: consider adding an explicit lifetime bound `<T as Anything<'_#6r, '_#7r>>::AssocType: ReEarlyBound(0, 'a)`...
 
-note: External requirements
+note: external requirements
   --> $DIR/projection-two-region-trait-bound-closure.rs:61:29
    |
 LL |     with_signature(cell, t, |cell, t| require(cell, t));
@@ -82,7 +82,7 @@ LL |     with_signature(cell, t, |cell, t| require(cell, t));
    = note: number of external vids: 5
    = note: where <T as Anything<ReClosureBound('_#2r), ReClosureBound('_#3r)>>::AssocType: '_#4r
 
-note: No external requirements
+note: no external requirements
   --> $DIR/projection-two-region-trait-bound-closure.rs:53:1
    |
 LL | / fn projection_outlives<'a, 'b, 'c, T>(cell: Cell<&'a ()>, t: T)
@@ -96,7 +96,7 @@ LL | | }
    |
    = note: defining type: projection_outlives::<'_#1r, '_#2r, '_#3r, T>
 
-note: External requirements
+note: external requirements
   --> $DIR/projection-two-region-trait-bound-closure.rs:70:29
    |
 LL |     with_signature(cell, t, |cell, t| require(cell, t));
@@ -109,7 +109,7 @@ LL |     with_signature(cell, t, |cell, t| require(cell, t));
    = note: number of external vids: 5
    = note: where <T as Anything<ReClosureBound('_#2r), ReClosureBound('_#3r)>>::AssocType: '_#4r
 
-note: No external requirements
+note: no external requirements
   --> $DIR/projection-two-region-trait-bound-closure.rs:65:1
    |
 LL | / fn elements_outlive1<'a, 'b, 'c, T>(cell: Cell<&'a ()>, t: T)
@@ -123,7 +123,7 @@ LL | | }
    |
    = note: defining type: elements_outlive1::<'_#1r, '_#2r, '_#3r, T>
 
-note: External requirements
+note: external requirements
   --> $DIR/projection-two-region-trait-bound-closure.rs:79:29
    |
 LL |     with_signature(cell, t, |cell, t| require(cell, t));
@@ -136,7 +136,7 @@ LL |     with_signature(cell, t, |cell, t| require(cell, t));
    = note: number of external vids: 5
    = note: where <T as Anything<ReClosureBound('_#2r), ReClosureBound('_#3r)>>::AssocType: '_#4r
 
-note: No external requirements
+note: no external requirements
   --> $DIR/projection-two-region-trait-bound-closure.rs:74:1
    |
 LL | / fn elements_outlive2<'a, 'b, 'c, T>(cell: Cell<&'a ()>, t: T)
@@ -150,7 +150,7 @@ LL | | }
    |
    = note: defining type: elements_outlive2::<'_#1r, '_#2r, '_#3r, T>
 
-note: External requirements
+note: external requirements
   --> $DIR/projection-two-region-trait-bound-closure.rs:87:29
    |
 LL |     with_signature(cell, t, |cell, t| require(cell, t));
@@ -164,7 +164,7 @@ LL |     with_signature(cell, t, |cell, t| require(cell, t));
    = note: number of external vids: 4
    = note: where <T as Anything<ReClosureBound('_#1r), ReClosureBound('_#1r)>>::AssocType: '_#2r
 
-note: No external requirements
+note: no external requirements
   --> $DIR/projection-two-region-trait-bound-closure.rs:83:1
    |
 LL | / fn two_regions<'a, 'b, T>(cell: Cell<&'a ()>, t: T)
@@ -191,7 +191,7 @@ LL |     with_signature(cell, t, |cell, t| require(cell, t));
    |
    = help: consider adding the following bound: `'b: 'a`
 
-note: External requirements
+note: external requirements
   --> $DIR/projection-two-region-trait-bound-closure.rs:97:29
    |
 LL |     with_signature(cell, t, |cell, t| require(cell, t));
@@ -204,7 +204,7 @@ LL |     with_signature(cell, t, |cell, t| require(cell, t));
    = note: number of external vids: 4
    = note: where <T as Anything<ReClosureBound('_#2r), ReClosureBound('_#2r)>>::AssocType: '_#3r
 
-note: No external requirements
+note: no external requirements
   --> $DIR/projection-two-region-trait-bound-closure.rs:92:1
    |
 LL | / fn two_regions_outlive<'a, 'b, T>(cell: Cell<&'a ()>, t: T)
@@ -218,7 +218,7 @@ LL | | }
    |
    = note: defining type: two_regions_outlive::<'_#1r, '_#2r, T>
 
-note: External requirements
+note: external requirements
   --> $DIR/projection-two-region-trait-bound-closure.rs:109:29
    |
 LL |     with_signature(cell, t, |cell, t| require(cell, t));
@@ -231,7 +231,7 @@ LL |     with_signature(cell, t, |cell, t| require(cell, t));
    = note: number of external vids: 3
    = note: where <T as Anything<ReClosureBound('_#1r), ReClosureBound('_#1r)>>::AssocType: '_#2r
 
-note: No external requirements
+note: no external requirements
   --> $DIR/projection-two-region-trait-bound-closure.rs:101:1
    |
 LL | / fn one_region<'a, T>(cell: Cell<&'a ()>, t: T)
diff --git a/src/test/ui/nll/ty-outlives/ty-param-closure-approximate-lower-bound.stderr b/src/test/ui/nll/ty-outlives/ty-param-closure-approximate-lower-bound.stderr
index db0bca1dec6..a213f423e3c 100644
--- a/src/test/ui/nll/ty-outlives/ty-param-closure-approximate-lower-bound.stderr
+++ b/src/test/ui/nll/ty-outlives/ty-param-closure-approximate-lower-bound.stderr
@@ -1,4 +1,4 @@
-note: External requirements
+note: external requirements
   --> $DIR/ty-param-closure-approximate-lower-bound.rs:24:24
    |
 LL |     twice(cell, value, |a, b| invoke(a, b));
@@ -11,7 +11,7 @@ LL |     twice(cell, value, |a, b| invoke(a, b));
    = note: number of external vids: 2
    = note: where T: '_#1r
 
-note: No external requirements
+note: no external requirements
   --> $DIR/ty-param-closure-approximate-lower-bound.rs:22:1
    |
 LL | / fn generic<T>(value: T) {
@@ -22,7 +22,7 @@ LL | | }
    |
    = note: defining type: generic::<T>
 
-note: External requirements
+note: external requirements
   --> $DIR/ty-param-closure-approximate-lower-bound.rs:29:24
    |
 LL |     twice(cell, value, |a, b| invoke(a, b));
@@ -36,7 +36,7 @@ LL |     twice(cell, value, |a, b| invoke(a, b));
    = note: number of external vids: 3
    = note: where T: '_#1r
 
-note: No external requirements
+note: no external requirements
   --> $DIR/ty-param-closure-approximate-lower-bound.rs:28:1
    |
 LL | / fn generic_fail<'a, T>(cell: Cell<&'a ()>, value: T) {
diff --git a/src/test/ui/nll/ty-outlives/ty-param-closure-outlives-from-return-type.stderr b/src/test/ui/nll/ty-outlives/ty-param-closure-outlives-from-return-type.stderr
index 0021d730f85..a488637bbc5 100644
--- a/src/test/ui/nll/ty-outlives/ty-param-closure-outlives-from-return-type.stderr
+++ b/src/test/ui/nll/ty-outlives/ty-param-closure-outlives-from-return-type.stderr
@@ -1,4 +1,4 @@
-note: External requirements
+note: external requirements
   --> $DIR/ty-param-closure-outlives-from-return-type.rs:26:23
    |
 LL |     with_signature(x, |y| y)
@@ -11,7 +11,7 @@ LL |     with_signature(x, |y| y)
    = note: number of external vids: 3
    = note: where T: '_#2r
 
-note: No external requirements
+note: no external requirements
   --> $DIR/ty-param-closure-outlives-from-return-type.rs:15:1
    |
 LL | / fn no_region<'a, T>(x: Box<T>) -> Box<dyn Debug + 'a>
diff --git a/src/test/ui/nll/ty-outlives/ty-param-closure-outlives-from-where-clause.stderr b/src/test/ui/nll/ty-outlives/ty-param-closure-outlives-from-where-clause.stderr
index 46fef8ee506..62dfe94e384 100644
--- a/src/test/ui/nll/ty-outlives/ty-param-closure-outlives-from-where-clause.stderr
+++ b/src/test/ui/nll/ty-outlives/ty-param-closure-outlives-from-where-clause.stderr
@@ -1,4 +1,4 @@
-note: External requirements
+note: external requirements
   --> $DIR/ty-param-closure-outlives-from-where-clause.rs:27:26
    |
 LL |       with_signature(a, b, |x, y| {
@@ -19,7 +19,7 @@ LL | |     })
    = note: number of external vids: 3
    = note: where T: '_#1r
 
-note: No external requirements
+note: no external requirements
   --> $DIR/ty-param-closure-outlives-from-where-clause.rs:26:1
    |
 LL | / fn no_region<'a, T>(a: Cell<&'a ()>, b: T) {
@@ -48,7 +48,7 @@ LL | |     })
    |
    = help: consider adding an explicit lifetime bound `T: ReFree(DefId(0:11 ~ ty_param_closure_outlives_from_where_clause[317d]::no_region[0]), BrNamed(DefId(0:12 ~ ty_param_closure_outlives_from_where_clause[317d]::no_region[0]::'a[0]), 'a))`...
 
-note: External requirements
+note: external requirements
   --> $DIR/ty-param-closure-outlives-from-where-clause.rs:43:26
    |
 LL |       with_signature(a, b, |x, y| {
@@ -68,7 +68,7 @@ LL | |     })
    = note: number of external vids: 3
    = note: where T: '_#2r
 
-note: No external requirements
+note: no external requirements
   --> $DIR/ty-param-closure-outlives-from-where-clause.rs:39:1
    |
 LL | / fn correct_region<'a, T>(a: Cell<&'a ()>, b: T)
@@ -82,7 +82,7 @@ LL | | }
    |
    = note: defining type: correct_region::<'_#1r, T>
 
-note: External requirements
+note: external requirements
   --> $DIR/ty-param-closure-outlives-from-where-clause.rs:64:26
    |
 LL |       with_signature(a, b, |x, y| {
@@ -101,7 +101,7 @@ LL | |     })
    = note: number of external vids: 4
    = note: where T: '_#2r
 
-note: No external requirements
+note: no external requirements
   --> $DIR/ty-param-closure-outlives-from-where-clause.rs:60:1
    |
 LL | / fn wrong_region<'a, 'b, T>(a: Cell<&'a ()>, b: T)
@@ -128,7 +128,7 @@ LL | |     })
    |
    = help: consider adding an explicit lifetime bound `T: ReFree(DefId(0:19 ~ ty_param_closure_outlives_from_where_clause[317d]::wrong_region[0]), BrNamed(DefId(0:20 ~ ty_param_closure_outlives_from_where_clause[317d]::wrong_region[0]::'a[0]), 'a))`...
 
-note: External requirements
+note: external requirements
   --> $DIR/ty-param-closure-outlives-from-where-clause.rs:77:26
    |
 LL |       with_signature(a, b, |x, y| {
@@ -145,7 +145,7 @@ LL | |     })
    = note: number of external vids: 4
    = note: where T: '_#3r
 
-note: No external requirements
+note: no external requirements
   --> $DIR/ty-param-closure-outlives-from-where-clause.rs:72:1
    |
 LL | / fn outlives_region<'a, 'b, T>(a: Cell<&'a ()>, b: T)
diff --git a/src/test/ui/order-dependent-cast-inference.stderr b/src/test/ui/order-dependent-cast-inference.stderr
index 081038c573a..ad50b415869 100644
--- a/src/test/ui/order-dependent-cast-inference.stderr
+++ b/src/test/ui/order-dependent-cast-inference.stderr
@@ -6,7 +6,7 @@ LL |     let mut y = 0 as *const _;
    |                      |
    |                      help: consider giving more type information
    |
-   = note: The type information given here is insufficient to check whether the pointer cast is valid
+   = note: the type information given here is insufficient to check whether the pointer cast is valid
 
 error: aborting due to previous error
 
diff --git a/src/test/ui/test-attrs/test-should-panic-attr.stderr b/src/test/ui/test-attrs/test-should-panic-attr.stderr
index 4b032eba5f8..d7d0d84432c 100644
--- a/src/test/ui/test-attrs/test-should-panic-attr.stderr
+++ b/src/test/ui/test-attrs/test-should-panic-attr.stderr
@@ -4,7 +4,7 @@ warning: argument must be of the form: `expected = "error message"`
 LL | #[should_panic(expected)]
    | ^^^^^^^^^^^^^^^^^^^^^^^^^
    |
-   = note: Errors in this attribute were erroneously allowed and will become a hard error in a future release.
+   = note: errors in this attribute were erroneously allowed and will become a hard error in a future release.
 
 warning: argument must be of the form: `expected = "error message"`
   --> $DIR/test-should-panic-attr.rs:18:1
@@ -12,7 +12,7 @@ warning: argument must be of the form: `expected = "error message"`
 LL | #[should_panic(expect)]
    | ^^^^^^^^^^^^^^^^^^^^^^^
    |
-   = note: Errors in this attribute were erroneously allowed and will become a hard error in a future release.
+   = note: errors in this attribute were erroneously allowed and will become a hard error in a future release.
 
 warning: argument must be of the form: `expected = "error message"`
   --> $DIR/test-should-panic-attr.rs:25:1
@@ -20,7 +20,7 @@ warning: argument must be of the form: `expected = "error message"`
 LL | #[should_panic(expected(foo, bar))]
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
-   = note: Errors in this attribute were erroneously allowed and will become a hard error in a future release.
+   = note: errors in this attribute were erroneously allowed and will become a hard error in a future release.
 
 warning: argument must be of the form: `expected = "error message"`
   --> $DIR/test-should-panic-attr.rs:32:1
@@ -28,5 +28,5 @@ warning: argument must be of the form: `expected = "error message"`
 LL | #[should_panic(expected = "foo", bar)]
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
-   = note: Errors in this attribute were erroneously allowed and will become a hard error in a future release.
+   = note: errors in this attribute were erroneously allowed and will become a hard error in a future release.
 
diff --git a/src/test/ui/traits/trait-bounds-same-crate-name.rs b/src/test/ui/traits/trait-bounds-same-crate-name.rs
index af720ecfdc0..1012edb1093 100644
--- a/src/test/ui/traits/trait-bounds-same-crate-name.rs
+++ b/src/test/ui/traits/trait-bounds-same-crate-name.rs
@@ -31,7 +31,7 @@ fn main() {
         a::try_foo(foo);
         //~^ ERROR E0277
         //~| trait impl with same name found
-        //~| Perhaps two different versions of crate `crate_a2`
+        //~| perhaps two different versions of crate `crate_a2`
 
         // We don't want to see the "version mismatch" help message here
         // because `implements_no_traits` has no impl for `Foo`
diff --git a/src/test/ui/traits/trait-bounds-same-crate-name.stderr b/src/test/ui/traits/trait-bounds-same-crate-name.stderr
index 8fd0bd13e54..8a6e059604d 100644
--- a/src/test/ui/traits/trait-bounds-same-crate-name.stderr
+++ b/src/test/ui/traits/trait-bounds-same-crate-name.stderr
@@ -14,7 +14,7 @@ help: trait impl with same name found
    |
 LL | impl Bar for Foo {}
    | ^^^^^^^^^^^^^^^^^^^
-   = note: Perhaps two different versions of crate `crate_a2` are being used?
+   = note: perhaps two different versions of crate `crate_a2` are being used?
 
 error[E0277]: the trait bound `main::a::DoesNotImplementTrait: main::a::Bar` is not satisfied
   --> $DIR/trait-bounds-same-crate-name.rs:38:20
@@ -43,7 +43,7 @@ help: trait impl with same name found
    |
 LL | impl Bar for ImplementsWrongTraitConditionally<isize> {}
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-   = note: Perhaps two different versions of crate `crate_a2` are being used?
+   = note: perhaps two different versions of crate `crate_a2` are being used?
 
 error[E0277]: the trait bound `main::a::ImplementsTraitForUsize<isize>: main::a::Bar` is not satisfied
   --> $DIR/trait-bounds-same-crate-name.rs:51:20