Auto merge of #89739 - matthiaskrgr:rollup-kskwqy5, r=matthiaskrgr

Rollup of 11 pull requests

Successful merges:

 - #88374 (Fix documentation in Cell)
 - #88713 (Improve docs for int_log)
 - #89428 (Feature gate the non_exhaustive_omitted_patterns lint)
 - #89438 (docs: `std::hash::Hash` should ensure prefix-free data)
 - #89520 (Don't rebuild GUI test crates every time you run test src/test/rustdoc-gui)
 - #89705 (Cfg hide no_global_oom_handling and no_fp_fmt_parse)
 - #89713 (Fix ABNF of inline asm options)
 - #89718 (Add #[must_use] to is_condition tests)
 - #89719 (Add #[must_use] to char escape methods)
 - #89720 (Add #[must_use] to math and bit manipulation methods)
 - #89735 (Stabilize proc_macro::is_available)

Failed merges:

r? `@ghost`
`@rustbot` modify labels: rollup

6 files changed, 146 insertions, 23 deletions

diff --git a/src/test/ui/feature-gates/feature-gate-non_exhaustive_omitted_patterns_lint.rs b/src/test/ui/feature-gates/feature-gate-non_exhaustive_omitted_patterns_lint.rs
new file mode 100644
index 00000000000..2a34ed4d4f6
--- /dev/null
+++ b/src/test/ui/feature-gates/feature-gate-non_exhaustive_omitted_patterns_lint.rs
@@ -0,0 +1,31 @@
+#![deny(non_exhaustive_omitted_patterns)]
+//~^ ERROR the `non_exhaustive_omitted_patterns` lint is unstable
+//~| ERROR the `non_exhaustive_omitted_patterns` lint is unstable
+#![allow(non_exhaustive_omitted_patterns)]
+//~^ ERROR the `non_exhaustive_omitted_patterns` lint is unstable
+//~| ERROR the `non_exhaustive_omitted_patterns` lint is unstable
+
+fn main() {
+    enum Foo {
+        A, B, C,
+    }
+
+    #[allow(non_exhaustive_omitted_patterns)]
+    match Foo::A {
+        Foo::A => {}
+        Foo::B => {}
+    }
+    //~^^^^^ ERROR the `non_exhaustive_omitted_patterns` lint is unstable
+    //~| ERROR the `non_exhaustive_omitted_patterns` lint is unstable
+    //~| ERROR the `non_exhaustive_omitted_patterns` lint is unstable
+    //~| ERROR the `non_exhaustive_omitted_patterns` lint is unstable
+
+    match Foo::A {
+        Foo::A => {}
+        Foo::B => {}
+        #[warn(non_exhaustive_omitted_patterns)]
+        _ => {}
+    }
+    //~^^^ ERROR the `non_exhaustive_omitted_patterns` lint is unstable
+    //~| ERROR the `non_exhaustive_omitted_patterns` lint is unstable
+}
diff --git a/src/test/ui/feature-gates/feature-gate-non_exhaustive_omitted_patterns_lint.stderr b/src/test/ui/feature-gates/feature-gate-non_exhaustive_omitted_patterns_lint.stderr
new file mode 100644
index 00000000000..691f64cf0ad
--- /dev/null
+++ b/src/test/ui/feature-gates/feature-gate-non_exhaustive_omitted_patterns_lint.stderr
@@ -0,0 +1,93 @@
+error[E0658]: the `non_exhaustive_omitted_patterns` lint is unstable
+  --> $DIR/feature-gate-non_exhaustive_omitted_patterns_lint.rs:1:1
+   |
+LL | #![deny(non_exhaustive_omitted_patterns)]
+   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = note: see issue #89554 <https://github.com/rust-lang/rust/issues/89554> for more information
+   = help: add `#![feature(non_exhaustive_omitted_patterns_lint)]` to the crate attributes to enable
+
+error[E0658]: the `non_exhaustive_omitted_patterns` lint is unstable
+  --> $DIR/feature-gate-non_exhaustive_omitted_patterns_lint.rs:4:1
+   |
+LL | #![allow(non_exhaustive_omitted_patterns)]
+   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = note: see issue #89554 <https://github.com/rust-lang/rust/issues/89554> for more information
+   = help: add `#![feature(non_exhaustive_omitted_patterns_lint)]` to the crate attributes to enable
+
+error[E0658]: the `non_exhaustive_omitted_patterns` lint is unstable
+  --> $DIR/feature-gate-non_exhaustive_omitted_patterns_lint.rs:13:5
+   |
+LL |     #[allow(non_exhaustive_omitted_patterns)]
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = note: see issue #89554 <https://github.com/rust-lang/rust/issues/89554> for more information
+   = help: add `#![feature(non_exhaustive_omitted_patterns_lint)]` to the crate attributes to enable
+
+error[E0658]: the `non_exhaustive_omitted_patterns` lint is unstable
+  --> $DIR/feature-gate-non_exhaustive_omitted_patterns_lint.rs:13:5
+   |
+LL |     #[allow(non_exhaustive_omitted_patterns)]
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = note: see issue #89554 <https://github.com/rust-lang/rust/issues/89554> for more information
+   = help: add `#![feature(non_exhaustive_omitted_patterns_lint)]` to the crate attributes to enable
+
+error[E0658]: the `non_exhaustive_omitted_patterns` lint is unstable
+  --> $DIR/feature-gate-non_exhaustive_omitted_patterns_lint.rs:26:9
+   |
+LL |         #[warn(non_exhaustive_omitted_patterns)]
+   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = note: see issue #89554 <https://github.com/rust-lang/rust/issues/89554> for more information
+   = help: add `#![feature(non_exhaustive_omitted_patterns_lint)]` to the crate attributes to enable
+
+error[E0658]: the `non_exhaustive_omitted_patterns` lint is unstable
+  --> $DIR/feature-gate-non_exhaustive_omitted_patterns_lint.rs:1:1
+   |
+LL | #![deny(non_exhaustive_omitted_patterns)]
+   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = note: see issue #89554 <https://github.com/rust-lang/rust/issues/89554> for more information
+   = help: add `#![feature(non_exhaustive_omitted_patterns_lint)]` to the crate attributes to enable
+
+error[E0658]: the `non_exhaustive_omitted_patterns` lint is unstable
+  --> $DIR/feature-gate-non_exhaustive_omitted_patterns_lint.rs:4:1
+   |
+LL | #![allow(non_exhaustive_omitted_patterns)]
+   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = note: see issue #89554 <https://github.com/rust-lang/rust/issues/89554> for more information
+   = help: add `#![feature(non_exhaustive_omitted_patterns_lint)]` to the crate attributes to enable
+
+error[E0658]: the `non_exhaustive_omitted_patterns` lint is unstable
+  --> $DIR/feature-gate-non_exhaustive_omitted_patterns_lint.rs:13:5
+   |
+LL |     #[allow(non_exhaustive_omitted_patterns)]
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = note: see issue #89554 <https://github.com/rust-lang/rust/issues/89554> for more information
+   = help: add `#![feature(non_exhaustive_omitted_patterns_lint)]` to the crate attributes to enable
+
+error[E0658]: the `non_exhaustive_omitted_patterns` lint is unstable
+  --> $DIR/feature-gate-non_exhaustive_omitted_patterns_lint.rs:13:5
+   |
+LL |     #[allow(non_exhaustive_omitted_patterns)]
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = note: see issue #89554 <https://github.com/rust-lang/rust/issues/89554> for more information
+   = help: add `#![feature(non_exhaustive_omitted_patterns_lint)]` to the crate attributes to enable
+
+error[E0658]: the `non_exhaustive_omitted_patterns` lint is unstable
+  --> $DIR/feature-gate-non_exhaustive_omitted_patterns_lint.rs:26:9
+   |
+LL |         #[warn(non_exhaustive_omitted_patterns)]
+   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = note: see issue #89554 <https://github.com/rust-lang/rust/issues/89554> for more information
+   = help: add `#![feature(non_exhaustive_omitted_patterns_lint)]` to the crate attributes to enable
+
+error: aborting due to 10 previous errors
+
+For more information about this error, try `rustc --explain E0658`.
diff --git a/src/test/ui/proc-macro/auxiliary/is-available.rs b/src/test/ui/proc-macro/auxiliary/is-available.rs
index 0caf186db1d..03f5265e376 100644
--- a/src/test/ui/proc-macro/auxiliary/is-available.rs
+++ b/src/test/ui/proc-macro/auxiliary/is-available.rs
@@ -2,7 +2,6 @@
 // no-prefer-dynamic
 
 #![crate_type = "proc-macro"]
-#![feature(proc_macro_is_available)]
 
 extern crate proc_macro;
 
diff --git a/src/test/ui/proc-macro/is-available.rs b/src/test/ui/proc-macro/is-available.rs
index 52f7e00d572..b32bb61b495 100644
--- a/src/test/ui/proc-macro/is-available.rs
+++ b/src/test/ui/proc-macro/is-available.rs
@@ -1,7 +1,5 @@
 // run-pass
 
-#![feature(proc_macro_is_available)]
-
 extern crate proc_macro;
 
 // aux-build:is-available.rs
diff --git a/src/test/ui/rfc-2008-non-exhaustive/reachable-patterns.rs b/src/test/ui/rfc-2008-non-exhaustive/reachable-patterns.rs
index c196ded404d..ce1b5c7c377 100644
--- a/src/test/ui/rfc-2008-non-exhaustive/reachable-patterns.rs
+++ b/src/test/ui/rfc-2008-non-exhaustive/reachable-patterns.rs
@@ -1,5 +1,7 @@
 // Test that the `non_exhaustive_omitted_patterns` lint is triggered correctly.
 
+#![feature(non_exhaustive_omitted_patterns_lint)]
+
 // aux-build:enums.rs
 extern crate enums;
 
diff --git a/src/test/ui/rfc-2008-non-exhaustive/reachable-patterns.stderr b/src/test/ui/rfc-2008-non-exhaustive/reachable-patterns.stderr
index e66fd8008a1..5b21e0402b1 100644
--- a/src/test/ui/rfc-2008-non-exhaustive/reachable-patterns.stderr
+++ b/src/test/ui/rfc-2008-non-exhaustive/reachable-patterns.stderr
@@ -1,11 +1,11 @@
 warning: some fields are not explicitly listed
-  --> $DIR/reachable-patterns.rs:127:9
+  --> $DIR/reachable-patterns.rs:129:9
    |
 LL |         VariantNonExhaustive::Bar { x, .. } => {}
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ field `y` not listed
    |
 note: the lint level is defined here
-  --> $DIR/reachable-patterns.rs:124:12
+  --> $DIR/reachable-patterns.rs:126:12
    |
 LL |     #[warn(non_exhaustive_omitted_patterns)]
    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -13,13 +13,13 @@ LL |     #[warn(non_exhaustive_omitted_patterns)]
    = note: the pattern is of type `VariantNonExhaustive` and the `non_exhaustive_omitted_patterns` attribute was found
 
 warning: some fields are not explicitly listed
-  --> $DIR/reachable-patterns.rs:132:9
+  --> $DIR/reachable-patterns.rs:134:9
    |
 LL |     let FunctionalRecord { first_field, second_field, .. } = FunctionalRecord::default();
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ field `third_field` not listed
    |
 note: the lint level is defined here
-  --> $DIR/reachable-patterns.rs:131:12
+  --> $DIR/reachable-patterns.rs:133:12
    |
 LL |     #[warn(non_exhaustive_omitted_patterns)]
    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -27,13 +27,13 @@ LL |     #[warn(non_exhaustive_omitted_patterns)]
    = note: the pattern is of type `FunctionalRecord` and the `non_exhaustive_omitted_patterns` attribute was found
 
 warning: some fields are not explicitly listed
-  --> $DIR/reachable-patterns.rs:140:29
+  --> $DIR/reachable-patterns.rs:142:29
    |
 LL |     let NestedStruct { bar: NormalStruct { first_field, .. }, .. } = NestedStruct::default();
    |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ field `second_field` not listed
    |
 note: the lint level is defined here
-  --> $DIR/reachable-patterns.rs:139:12
+  --> $DIR/reachable-patterns.rs:141:12
    |
 LL |     #[warn(non_exhaustive_omitted_patterns)]
    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -41,7 +41,7 @@ LL |     #[warn(non_exhaustive_omitted_patterns)]
    = note: the pattern is of type `NormalStruct` and the `non_exhaustive_omitted_patterns` attribute was found
 
 warning: some fields are not explicitly listed
-  --> $DIR/reachable-patterns.rs:140:9
+  --> $DIR/reachable-patterns.rs:142:9
    |
 LL |     let NestedStruct { bar: NormalStruct { first_field, .. }, .. } = NestedStruct::default();
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ field `foo` not listed
@@ -50,13 +50,13 @@ LL |     let NestedStruct { bar: NormalStruct { first_field, .. }, .. } = Nested
    = note: the pattern is of type `NestedStruct` and the `non_exhaustive_omitted_patterns` attribute was found
 
 error: some variants are not matched explicitly
-  --> $DIR/reachable-patterns.rs:54:9
+  --> $DIR/reachable-patterns.rs:56:9
    |
 LL |         _ => {}
    |         ^ pattern `Struct { .. }` not covered
    |
 note: the lint level is defined here
-  --> $DIR/reachable-patterns.rs:53:16
+  --> $DIR/reachable-patterns.rs:55:16
    |
 LL |         #[deny(non_exhaustive_omitted_patterns)]
    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -64,13 +64,13 @@ LL |         #[deny(non_exhaustive_omitted_patterns)]
    = note: the matched value is of type `NonExhaustiveEnum` and the `non_exhaustive_omitted_patterns` attribute was found
 
 error: some variants are not matched explicitly
-  --> $DIR/reachable-patterns.rs:61:9
+  --> $DIR/reachable-patterns.rs:63:9
    |
 LL |         _ => {}
    |         ^ pattern `Tuple(_)` not covered
    |
 note: the lint level is defined here
-  --> $DIR/reachable-patterns.rs:60:16
+  --> $DIR/reachable-patterns.rs:62:16
    |
 LL |         #[deny(non_exhaustive_omitted_patterns)]
    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -78,13 +78,13 @@ LL |         #[deny(non_exhaustive_omitted_patterns)]
    = note: the matched value is of type `NonExhaustiveEnum` and the `non_exhaustive_omitted_patterns` attribute was found
 
 error: some variants are not matched explicitly
-  --> $DIR/reachable-patterns.rs:71:9
+  --> $DIR/reachable-patterns.rs:73:9
    |
 LL |         _ => {}
    |         ^ pattern `Unit` not covered
    |
 note: the lint level is defined here
-  --> $DIR/reachable-patterns.rs:70:16
+  --> $DIR/reachable-patterns.rs:72:16
    |
 LL |         #[deny(non_exhaustive_omitted_patterns)]
    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -92,13 +92,13 @@ LL |         #[deny(non_exhaustive_omitted_patterns)]
    = note: the matched value is of type `NonExhaustiveEnum` and the `non_exhaustive_omitted_patterns` attribute was found
 
 error: some variants are not matched explicitly
-  --> $DIR/reachable-patterns.rs:88:32
+  --> $DIR/reachable-patterns.rs:90:32
    |
 LL |         NestedNonExhaustive::A(_) => {}
    |                                ^ patterns `Tuple(_)` and `Struct { .. }` not covered
    |
 note: the lint level is defined here
-  --> $DIR/reachable-patterns.rs:85:12
+  --> $DIR/reachable-patterns.rs:87:12
    |
 LL |     #[deny(non_exhaustive_omitted_patterns)]
    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -106,7 +106,7 @@ LL |     #[deny(non_exhaustive_omitted_patterns)]
    = note: the matched value is of type `NonExhaustiveEnum` and the `non_exhaustive_omitted_patterns` attribute was found
 
 error: some variants are not matched explicitly
-  --> $DIR/reachable-patterns.rs:90:9
+  --> $DIR/reachable-patterns.rs:92:9
    |
 LL |         _ => {}
    |         ^ pattern `C` not covered
@@ -115,13 +115,13 @@ LL |         _ => {}
    = note: the matched value is of type `NestedNonExhaustive` and the `non_exhaustive_omitted_patterns` attribute was found
 
 error: some variants are not matched explicitly
-  --> $DIR/reachable-patterns.rs:120:9
+  --> $DIR/reachable-patterns.rs:122:9
    |
 LL |         _ => {}
    |         ^ patterns `HostUnreachable`, `NetworkUnreachable`, `NetworkDown` and 18 more not covered
    |
 note: the lint level is defined here
-  --> $DIR/reachable-patterns.rs:97:12
+  --> $DIR/reachable-patterns.rs:99:12
    |
 LL |     #[deny(non_exhaustive_omitted_patterns)]
    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -129,13 +129,13 @@ LL |     #[deny(non_exhaustive_omitted_patterns)]
    = note: the matched value is of type `ErrorKind` and the `non_exhaustive_omitted_patterns` attribute was found
 
 error: some variants are not matched explicitly
-  --> $DIR/reachable-patterns.rs:157:9
+  --> $DIR/reachable-patterns.rs:159:9
    |
 LL |         _ => {}
    |         ^ pattern `A(_)` not covered
    |
 note: the lint level is defined here
-  --> $DIR/reachable-patterns.rs:155:12
+  --> $DIR/reachable-patterns.rs:157:12
    |
 LL |     #[deny(non_exhaustive_omitted_patterns)]
    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^