Auto merge of #91959 - matthiaskrgr:rollup-rhajuvw, r=matthiaskrgr

Rollup of 7 pull requests

Successful merges:

 - #90521 (Stabilize `destructuring_assignment`)
 - #91479 (Add `[T]::as_simd(_mut)`)
 - #91584 (Improve code for rustdoc-gui tester)
 - #91886 (core: minor `Option` doc correction)
 - #91888 (Handle unordered const/ty generics for object lifetime defaults)
 - #91905 (Fix source code page sidebar on mobile)
 - #91906 (Removed `in_band_lifetimes` from `library\proc_macro`)

Failed merges:

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

43 files changed, 115 insertions, 335 deletions

diff --git a/src/test/rustdoc-gui/sidebar-source-code.goml b/src/test/rustdoc-gui/sidebar-source-code.goml
new file mode 100644
index 00000000000..98f4fdf4233
--- /dev/null
+++ b/src/test/rustdoc-gui/sidebar-source-code.goml
@@ -0,0 +1,32 @@
+// The goal of this test is to ensure that the sidebar is working as expected in the source
+// code pages.
+goto: file://|DOC_PATH|/src/test_docs/lib.rs.html
+// First: desktop mode.
+size: (1100, 800)
+// We check that the sidebar isn't expanded and has the expected width.
+assert-css: ("nav.sidebar", {"width": "50px"})
+// We now click on the button to expand the sidebar.
+click: (10, 10)
+// We wait for the sidebar to be expanded (there is a 0.5s animation).
+wait-for: 600
+assert-css: ("nav.sidebar.expanded", {"width": "300px"})
+// We collapse the sidebar.
+click: (10, 10)
+// We wait for the sidebar to be collapsed (there is a 0.5s animation).
+wait-for: 600
+// We ensure that the class has been removed.
+assert-false: "nav.sidebar.expanded"
+assert: "nav.sidebar"
+
+// We now switch to mobile mode.
+size: (600, 600)
+// We check that the sidebar has the expected width (0 and 1px for the border).
+assert-css: ("nav.sidebar", {"width": "1px"})
+// We expand the sidebar.
+click: "#sidebar-toggle"
+assert-css: ("nav.sidebar.expanded", {"width": "600px"})
+// We collapse the sidebar.
+click: (10, 10)
+// We ensure that the class has been removed.
+assert-false: "nav.sidebar.expanded"
+assert: "nav.sidebar"
diff --git a/src/test/ui/associated-types/associated-type-destructuring-assignment.rs b/src/test/ui/associated-types/associated-type-destructuring-assignment.rs
index fea7c7a383f..f038c9ce7ba 100644
--- a/src/test/ui/associated-types/associated-type-destructuring-assignment.rs
+++ b/src/test/ui/associated-types/associated-type-destructuring-assignment.rs
@@ -1,6 +1,5 @@
 // check-pass
 
-#![feature(destructuring_assignment)]
 #![feature(more_qualified_paths)]
 
 enum E { V() }
diff --git a/src/test/ui/const-generics/defaults/auxiliary/trait_object_lt_defaults_lib.rs b/src/test/ui/const-generics/defaults/auxiliary/trait_object_lt_defaults_lib.rs
new file mode 100644
index 00000000000..26a2c47ffb2
--- /dev/null
+++ b/src/test/ui/const-generics/defaults/auxiliary/trait_object_lt_defaults_lib.rs
@@ -0,0 +1 @@
+pub struct Foo<'a, const N: usize, T: 'a + ?Sized>(pub &'a T, [(); N]);
diff --git a/src/test/ui/const-generics/defaults/trait_object_lt_defaults.rs b/src/test/ui/const-generics/defaults/trait_object_lt_defaults.rs
new file mode 100644
index 00000000000..a1828727ecd
--- /dev/null
+++ b/src/test/ui/const-generics/defaults/trait_object_lt_defaults.rs
@@ -0,0 +1,24 @@
+// aux-build:trait_object_lt_defaults_lib.rs
+// run-pass
+#![allow(dead_code)]
+extern crate trait_object_lt_defaults_lib;
+
+// Tests that `A<'a, 3, dyn Test>` is short for `A<'a, 3, dyn Test + 'a>`
+// and `Foo<'a, 3, dyn Test>` is short for `Foo<'a, 3, dyn Test + 'a>`
+// Test is in `const-generics/defaults` because it relies on param ordering
+
+trait Test {}
+
+struct A<'a, const N: usize, T: ?Sized + 'a>(&'a T, [(); N]);
+fn blah<'a>(mut a: A<'a, 3, dyn Test>, arg: &'a (dyn Test + 'a)) {
+    a.0 = arg;
+}
+
+fn other_blah<'a>(
+    mut a: trait_object_lt_defaults_lib::Foo<'a, 3, dyn Test>,
+    arg: &'a (dyn Test + 'a),
+) {
+    a.0 = arg;
+}
+
+fn main() {}
diff --git a/src/test/ui/cross/cross-file-errors/main.rs b/src/test/ui/cross/cross-file-errors/main.rs
index 1902ab94d4c..4219f892deb 100644
--- a/src/test/ui/cross/cross-file-errors/main.rs
+++ b/src/test/ui/cross/cross-file-errors/main.rs
@@ -4,5 +4,4 @@ mod underscore;
 fn main() {
     underscore!();
     //~^ ERROR `_` can only be used on the left-hand side of an assignment
-    //~| ERROR destructuring assignments are unstable
 }
diff --git a/src/test/ui/cross/cross-file-errors/main.stderr b/src/test/ui/cross/cross-file-errors/main.stderr
index 829535f9212..293a300ed61 100644
--- a/src/test/ui/cross/cross-file-errors/main.stderr
+++ b/src/test/ui/cross/cross-file-errors/main.stderr
@@ -1,18 +1,3 @@
-error[E0658]: destructuring assignments are unstable
-  --> $DIR/underscore.rs:8:9
-   |
-LL |         _
-   |         ^
-   |
-  ::: $DIR/main.rs:5:5
-   |
-LL |     underscore!();
-   |     ------------- in this macro invocation
-   |
-   = note: see issue #71126 <https://github.com/rust-lang/rust/issues/71126> for more information
-   = help: add `#![feature(destructuring_assignment)]` to the crate attributes to enable
-   = note: this error originates in the macro `underscore` (in Nightly builds, run with -Z macro-backtrace for more info)
-
 error: in expressions, `_` can only be used on the left-hand side of an assignment
   --> $DIR/underscore.rs:8:9
    |
@@ -26,6 +11,5 @@ LL |     underscore!();
    |
    = note: this error originates in the macro `underscore` (in Nightly builds, run with -Z macro-backtrace for more info)
 
-error: aborting due to 2 previous errors
+error: aborting due to previous error
 
-For more information about this error, try `rustc --explain E0658`.
diff --git a/src/test/ui/destructuring-assignment/bad-expr-lhs.rs b/src/test/ui/destructuring-assignment/bad-expr-lhs.rs
index 39536f12e3b..53794783a3c 100644
--- a/src/test/ui/destructuring-assignment/bad-expr-lhs.rs
+++ b/src/test/ui/destructuring-assignment/bad-expr-lhs.rs
@@ -1,12 +1,9 @@
 fn main() {
     1 = 2; //~ ERROR invalid left-hand side of assignment
     1 += 2; //~ ERROR invalid left-hand side of assignment
-    (1, 2) = (3, 4); //~ ERROR destructuring assignments are unstable
+    (1, 2) = (3, 4);
+    //~^ ERROR invalid left-hand side of assignment
     //~| ERROR invalid left-hand side of assignment
-    //~| ERROR invalid left-hand side of assignment
-
-    let (a, b) = (1, 2);
-    (a, b) = (3, 4); //~ ERROR destructuring assignments are unstable
 
     None = Some(3); //~ ERROR invalid left-hand side of assignment
 }
diff --git a/src/test/ui/destructuring-assignment/bad-expr-lhs.stderr b/src/test/ui/destructuring-assignment/bad-expr-lhs.stderr
index d4b2193d09f..d2986747480 100644
--- a/src/test/ui/destructuring-assignment/bad-expr-lhs.stderr
+++ b/src/test/ui/destructuring-assignment/bad-expr-lhs.stderr
@@ -1,25 +1,3 @@
-error[E0658]: destructuring assignments are unstable
-  --> $DIR/bad-expr-lhs.rs:4:12
-   |
-LL |     (1, 2) = (3, 4);
-   |     ------ ^
-   |     |
-   |     cannot assign to this expression
-   |
-   = note: see issue #71126 <https://github.com/rust-lang/rust/issues/71126> for more information
-   = help: add `#![feature(destructuring_assignment)]` to the crate attributes to enable
-
-error[E0658]: destructuring assignments are unstable
-  --> $DIR/bad-expr-lhs.rs:9:12
-   |
-LL |     (a, b) = (3, 4);
-   |     ------ ^
-   |     |
-   |     cannot assign to this expression
-   |
-   = note: see issue #71126 <https://github.com/rust-lang/rust/issues/71126> for more information
-   = help: add `#![feature(destructuring_assignment)]` to the crate attributes to enable
-
 error[E0070]: invalid left-hand side of assignment
   --> $DIR/bad-expr-lhs.rs:2:7
    |
@@ -53,14 +31,14 @@ LL |     (1, 2) = (3, 4);
    |         cannot assign to this expression
 
 error[E0070]: invalid left-hand side of assignment
-  --> $DIR/bad-expr-lhs.rs:11:10
+  --> $DIR/bad-expr-lhs.rs:8:10
    |
 LL |     None = Some(3);
    |     ---- ^
    |     |
    |     cannot assign to this expression
 
-error: aborting due to 7 previous errors
+error: aborting due to 5 previous errors
 
-Some errors have detailed explanations: E0067, E0070, E0658.
+Some errors have detailed explanations: E0067, E0070.
 For more information about an error, try `rustc --explain E0067`.
diff --git a/src/test/ui/destructuring-assignment/default-match-bindings-forbidden.rs b/src/test/ui/destructuring-assignment/default-match-bindings-forbidden.rs
index adecd0ff291..ff867c00071 100644
--- a/src/test/ui/destructuring-assignment/default-match-bindings-forbidden.rs
+++ b/src/test/ui/destructuring-assignment/default-match-bindings-forbidden.rs
@@ -1,5 +1,3 @@
-#![feature(destructuring_assignment)]
-
 fn main() {
     let mut x = &0;
     let mut y = &0;
diff --git a/src/test/ui/destructuring-assignment/default-match-bindings-forbidden.stderr b/src/test/ui/destructuring-assignment/default-match-bindings-forbidden.stderr
index e6161fdfa24..3d472bf6309 100644
--- a/src/test/ui/destructuring-assignment/default-match-bindings-forbidden.stderr
+++ b/src/test/ui/destructuring-assignment/default-match-bindings-forbidden.stderr
@@ -1,5 +1,5 @@
 error[E0308]: mismatched types
-  --> $DIR/default-match-bindings-forbidden.rs:6:5
+  --> $DIR/default-match-bindings-forbidden.rs:4:5
    |
 LL |     (x, y) = &(1, 2);
    |     ^^^^^^   ------- this expression has type `&({integer}, {integer})`
diff --git a/src/test/ui/destructuring-assignment/drop-order.rs b/src/test/ui/destructuring-assignment/drop-order.rs
index d06b31c7f27..79671054ca7 100644
--- a/src/test/ui/destructuring-assignment/drop-order.rs
+++ b/src/test/ui/destructuring-assignment/drop-order.rs
@@ -2,7 +2,6 @@
 
 //! Test that let bindings and destructuring assignments have consistent drop orders
 
-#![feature(destructuring_assignment)]
 #![allow(unused_variables, unused_assignments)]
 
 use std::cell::RefCell;
diff --git a/src/test/ui/destructuring-assignment/nested_destructure.rs b/src/test/ui/destructuring-assignment/nested_destructure.rs
index 0d45ff7da72..94b3a5ff9a7 100644
--- a/src/test/ui/destructuring-assignment/nested_destructure.rs
+++ b/src/test/ui/destructuring-assignment/nested_destructure.rs
@@ -1,7 +1,5 @@
 // run-pass
 
-#![feature(destructuring_assignment)]
-
 struct Struct<S, T> {
     a: S,
     b: T,
diff --git a/src/test/ui/destructuring-assignment/note-unsupported.rs b/src/test/ui/destructuring-assignment/note-unsupported.rs
index 249fba7f920..c69edd42170 100644
--- a/src/test/ui/destructuring-assignment/note-unsupported.rs
+++ b/src/test/ui/destructuring-assignment/note-unsupported.rs
@@ -3,25 +3,20 @@ struct S { x: u8, y: u8 }
 fn main() {
     let (a, b) = (1, 2);
 
-    (a, b) = (3, 4); //~ ERROR destructuring assignments are unstable
+    (a, b) = (3, 4);
     (a, b) += (3, 4); //~ ERROR invalid left-hand side of assignment
     //~| ERROR binary assignment operation `+=` cannot be applied
 
-    [a, b] = [3, 4]; //~ ERROR destructuring assignments are unstable
+    [a, b] = [3, 4];
     [a, b] += [3, 4]; //~ ERROR invalid left-hand side of assignment
     //~| ERROR binary assignment operation `+=` cannot be applied
 
     let s = S { x: 3, y: 4 };
 
-    S { x: a, y: b } = s; //~ ERROR destructuring assignments are unstable
+    S { x: a, y: b } = s;
     S { x: a, y: b } += s; //~ ERROR invalid left-hand side of assignment
     //~| ERROR binary assignment operation `+=` cannot be applied
 
     S { x: a, ..s } = S { x: 3, y: 4 };
     //~^ ERROR functional record updates are not allowed in destructuring assignments
-    //~| ERROR destructuring assignments are unstable
-
-    let c = 3;
-
-    ((a, b), c) = ((3, 4), 5); //~ ERROR destructuring assignments are unstable
 }
diff --git a/src/test/ui/destructuring-assignment/note-unsupported.stderr b/src/test/ui/destructuring-assignment/note-unsupported.stderr
index 7b9788ca0fe..3e2282743bf 100644
--- a/src/test/ui/destructuring-assignment/note-unsupported.stderr
+++ b/src/test/ui/destructuring-assignment/note-unsupported.stderr
@@ -1,64 +1,9 @@
-error[E0658]: destructuring assignments are unstable
-  --> $DIR/note-unsupported.rs:6:12
-   |
-LL |     (a, b) = (3, 4);
-   |     ------ ^
-   |     |
-   |     cannot assign to this expression
-   |
-   = note: see issue #71126 <https://github.com/rust-lang/rust/issues/71126> for more information
-   = help: add `#![feature(destructuring_assignment)]` to the crate attributes to enable
-
-error[E0658]: destructuring assignments are unstable
-  --> $DIR/note-unsupported.rs:10:12
-   |
-LL |     [a, b] = [3, 4];
-   |     ------ ^
-   |     |
-   |     cannot assign to this expression
-   |
-   = note: see issue #71126 <https://github.com/rust-lang/rust/issues/71126> for more information
-   = help: add `#![feature(destructuring_assignment)]` to the crate attributes to enable
-
-error[E0658]: destructuring assignments are unstable
-  --> $DIR/note-unsupported.rs:16:22
-   |
-LL |     S { x: a, y: b } = s;
-   |     ---------------- ^
-   |     |
-   |     cannot assign to this expression
-   |
-   = note: see issue #71126 <https://github.com/rust-lang/rust/issues/71126> for more information
-   = help: add `#![feature(destructuring_assignment)]` to the crate attributes to enable
-
-error[E0658]: destructuring assignments are unstable
-  --> $DIR/note-unsupported.rs:20:21
-   |
-LL |     S { x: a, ..s } = S { x: 3, y: 4 };
-   |     --------------- ^
-   |     |
-   |     cannot assign to this expression
-   |
-   = note: see issue #71126 <https://github.com/rust-lang/rust/issues/71126> for more information
-   = help: add `#![feature(destructuring_assignment)]` to the crate attributes to enable
-
 error: functional record updates are not allowed in destructuring assignments
   --> $DIR/note-unsupported.rs:20:17
    |
 LL |     S { x: a, ..s } = S { x: 3, y: 4 };
    |                 ^ help: consider removing the trailing pattern
 
-error[E0658]: destructuring assignments are unstable
-  --> $DIR/note-unsupported.rs:26:17
-   |
-LL |     ((a, b), c) = ((3, 4), 5);
-   |     ----------- ^
-   |     |
-   |     cannot assign to this expression
-   |
-   = note: see issue #71126 <https://github.com/rust-lang/rust/issues/71126> for more information
-   = help: add `#![feature(destructuring_assignment)]` to the crate attributes to enable
-
 error[E0368]: binary assignment operation `+=` cannot be applied to type `({integer}, {integer})`
   --> $DIR/note-unsupported.rs:7:5
    |
@@ -124,7 +69,7 @@ LL |     S { x: a, y: b } += s;
    |     |
    |     cannot assign to this expression
 
-error: aborting due to 12 previous errors
+error: aborting due to 7 previous errors
 
-Some errors have detailed explanations: E0067, E0368, E0658.
+Some errors have detailed explanations: E0067, E0368.
 For more information about an error, try `rustc --explain E0067`.
diff --git a/src/test/ui/destructuring-assignment/slice_destructure.rs b/src/test/ui/destructuring-assignment/slice_destructure.rs
index 76cdc1260fc..762c4b5e8ea 100644
--- a/src/test/ui/destructuring-assignment/slice_destructure.rs
+++ b/src/test/ui/destructuring-assignment/slice_destructure.rs
@@ -1,7 +1,5 @@
 // run-pass
 
-#![feature(destructuring_assignment)]
-
 fn main() {
   let (mut a, mut b);
   [a, b] = [0, 1];
diff --git a/src/test/ui/destructuring-assignment/slice_destructure_fail.rs b/src/test/ui/destructuring-assignment/slice_destructure_fail.rs
index 90d93892f7f..33b09eb349d 100644
--- a/src/test/ui/destructuring-assignment/slice_destructure_fail.rs
+++ b/src/test/ui/destructuring-assignment/slice_destructure_fail.rs
@@ -1,5 +1,3 @@
-#![feature(destructuring_assignment)]
-
 fn main() {
   let (mut a, mut b);
   [a, .., b, ..] = [0, 1]; //~ ERROR `..` can only be used once per slice pattern
diff --git a/src/test/ui/destructuring-assignment/slice_destructure_fail.stderr b/src/test/ui/destructuring-assignment/slice_destructure_fail.stderr
index cc412c72df5..92c86febac4 100644
--- a/src/test/ui/destructuring-assignment/slice_destructure_fail.stderr
+++ b/src/test/ui/destructuring-assignment/slice_destructure_fail.stderr
@@ -1,5 +1,5 @@
 error: `..` can only be used once per slice pattern
-  --> $DIR/slice_destructure_fail.rs:5:14
+  --> $DIR/slice_destructure_fail.rs:3:14
    |
 LL |   [a, .., b, ..] = [0, 1];
    |       --     ^^ can only be used once per slice pattern
@@ -7,13 +7,13 @@ LL |   [a, .., b, ..] = [0, 1];
    |       previously used here
 
 error[E0527]: pattern requires 3 elements but array has 2
-  --> $DIR/slice_destructure_fail.rs:6:3
+  --> $DIR/slice_destructure_fail.rs:4:3
    |
 LL |   [a, a, b] = [1, 2];
    |   ^^^^^^^^^ expected 2 elements
 
 error[E0527]: pattern requires 1 element but array has 2
-  --> $DIR/slice_destructure_fail.rs:7:3
+  --> $DIR/slice_destructure_fail.rs:5:3
    |
 LL |   [_] = [1, 2];
    |   ^^^ expected 2 elements
diff --git a/src/test/ui/destructuring-assignment/struct_destructure.rs b/src/test/ui/destructuring-assignment/struct_destructure.rs
index 2bcbd9d0d74..8cceaadd7b9 100644
--- a/src/test/ui/destructuring-assignment/struct_destructure.rs
+++ b/src/test/ui/destructuring-assignment/struct_destructure.rs
@@ -1,6 +1,5 @@
 // run-pass
 
-#![feature(destructuring_assignment)]
 struct Struct<S, T> {
     a: S,
     b: T,
diff --git a/src/test/ui/destructuring-assignment/struct_destructure_fail.rs b/src/test/ui/destructuring-assignment/struct_destructure_fail.rs
index 4aa327b61f4..c001fccd4cb 100644
--- a/src/test/ui/destructuring-assignment/struct_destructure_fail.rs
+++ b/src/test/ui/destructuring-assignment/struct_destructure_fail.rs
@@ -1,4 +1,3 @@
-#![feature(destructuring_assignment)]
 struct Struct<S, T> {
     a: S,
     b: T,
diff --git a/src/test/ui/destructuring-assignment/struct_destructure_fail.stderr b/src/test/ui/destructuring-assignment/struct_destructure_fail.stderr
index 635bd5e7edf..ae7b3d1e5a9 100644
--- a/src/test/ui/destructuring-assignment/struct_destructure_fail.stderr
+++ b/src/test/ui/destructuring-assignment/struct_destructure_fail.stderr
@@ -1,5 +1,5 @@
 error: expected identifier, found reserved identifier `_`
-  --> $DIR/struct_destructure_fail.rs:12:17
+  --> $DIR/struct_destructure_fail.rs:11:17
    |
 LL |     Struct { a, _ } = Struct { a: 1, b: 2 };
    |     ------      ^ expected identifier, found reserved identifier
@@ -7,25 +7,25 @@ LL |     Struct { a, _ } = Struct { a: 1, b: 2 };
    |     while parsing this struct
 
 error: functional record updates are not allowed in destructuring assignments
-  --> $DIR/struct_destructure_fail.rs:14:19
+  --> $DIR/struct_destructure_fail.rs:13:19
    |
 LL |     Struct { a, ..d } = Struct { a: 1, b: 2 };
    |                   ^ help: consider removing the trailing pattern
 
 error: base expression required after `..`
-  --> $DIR/struct_destructure_fail.rs:16:19
+  --> $DIR/struct_destructure_fail.rs:15:19
    |
 LL |     Struct { a, .. };
    |                   ^ add a base expression here
 
 error[E0026]: struct `Struct` does not have a field named `c`
-  --> $DIR/struct_destructure_fail.rs:11:20
+  --> $DIR/struct_destructure_fail.rs:10:20
    |
 LL |     Struct { a, b, c } = Struct { a: 0, b: 1 };
    |                    ^ struct `Struct` does not have this field
 
 error[E0027]: pattern does not mention field `b`
-  --> $DIR/struct_destructure_fail.rs:12:5
+  --> $DIR/struct_destructure_fail.rs:11:5
    |
 LL |     Struct { a, _ } = Struct { a: 1, b: 2 };
    |     ^^^^^^^^^^^^^^^ missing field `b`
diff --git a/src/test/ui/destructuring-assignment/tuple_destructure.rs b/src/test/ui/destructuring-assignment/tuple_destructure.rs
index 2096182d421..2a8584029d0 100644
--- a/src/test/ui/destructuring-assignment/tuple_destructure.rs
+++ b/src/test/ui/destructuring-assignment/tuple_destructure.rs
@@ -1,7 +1,5 @@
 // run-pass
 
-#![feature(destructuring_assignment)]
-
 fn main() {
     let (mut a, mut b);
     (a, b) = (0, 1);
diff --git a/src/test/ui/destructuring-assignment/tuple_destructure_fail.rs b/src/test/ui/destructuring-assignment/tuple_destructure_fail.rs
index 5524e91dc40..4e3172d1973 100644
--- a/src/test/ui/destructuring-assignment/tuple_destructure_fail.rs
+++ b/src/test/ui/destructuring-assignment/tuple_destructure_fail.rs
@@ -1,5 +1,3 @@
-#![feature(destructuring_assignment)]
-
 const C: i32 = 1;
 
 fn main() {
diff --git a/src/test/ui/destructuring-assignment/tuple_destructure_fail.stderr b/src/test/ui/destructuring-assignment/tuple_destructure_fail.stderr
index 1146b88278d..55b08b74af0 100644
--- a/src/test/ui/destructuring-assignment/tuple_destructure_fail.stderr
+++ b/src/test/ui/destructuring-assignment/tuple_destructure_fail.stderr
@@ -1,5 +1,5 @@
 error: `..` can only be used once per tuple pattern
-  --> $DIR/tuple_destructure_fail.rs:7:16
+  --> $DIR/tuple_destructure_fail.rs:5:16
    |
 LL |     (a, .., b, ..) = (0, 1);
    |         --     ^^ can only be used once per tuple pattern
@@ -7,7 +7,7 @@ LL |     (a, .., b, ..) = (0, 1);
    |         previously used here
 
 error[E0308]: mismatched types
-  --> $DIR/tuple_destructure_fail.rs:8:5
+  --> $DIR/tuple_destructure_fail.rs:6:5
    |
 LL |     (a, a, b) = (1, 2);
    |     ^^^^^^^^^   ------ this expression has type `({integer}, {integer})`
@@ -18,7 +18,7 @@ LL |     (a, a, b) = (1, 2);
              found tuple `(_, _, _)`
 
 error[E0070]: invalid left-hand side of assignment
-  --> $DIR/tuple_destructure_fail.rs:9:13
+  --> $DIR/tuple_destructure_fail.rs:7:13
    |
 LL |     (C, ..) = (0,1);
    |      -      ^
@@ -26,7 +26,7 @@ LL |     (C, ..) = (0,1);
    |      cannot assign to this expression
 
 error[E0308]: mismatched types
-  --> $DIR/tuple_destructure_fail.rs:10:5
+  --> $DIR/tuple_destructure_fail.rs:8:5
    |
 LL |     (_,) = (1, 2);
    |     ^^^^   ------ this expression has type `({integer}, {integer})`
diff --git a/src/test/ui/destructuring-assignment/tuple_struct_destructure.rs b/src/test/ui/destructuring-assignment/tuple_struct_destructure.rs
index 7b5c5ad2bae..07b5f7a314e 100644
--- a/src/test/ui/destructuring-assignment/tuple_struct_destructure.rs
+++ b/src/test/ui/destructuring-assignment/tuple_struct_destructure.rs
@@ -1,7 +1,5 @@
 // run-pass
 
-#![feature(destructuring_assignment)]
-
 struct TupleStruct<S, T>(S, T);
 
 impl<S, T> TupleStruct<S, T> {
diff --git a/src/test/ui/destructuring-assignment/tuple_struct_destructure_fail.rs b/src/test/ui/destructuring-assignment/tuple_struct_destructure_fail.rs
index c39db061177..845f867d7b8 100644
--- a/src/test/ui/destructuring-assignment/tuple_struct_destructure_fail.rs
+++ b/src/test/ui/destructuring-assignment/tuple_struct_destructure_fail.rs
@@ -1,5 +1,3 @@
-#![feature(destructuring_assignment)]
-
 struct TupleStruct<S, T>(S, T);
 
 enum Enum<S, T> {
diff --git a/src/test/ui/destructuring-assignment/tuple_struct_destructure_fail.stderr b/src/test/ui/destructuring-assignment/tuple_struct_destructure_fail.stderr
index 9aae4b0a3fa..5cc7acba3f3 100644
--- a/src/test/ui/destructuring-assignment/tuple_struct_destructure_fail.stderr
+++ b/src/test/ui/destructuring-assignment/tuple_struct_destructure_fail.stderr
@@ -1,5 +1,5 @@
 error: `..` can only be used once per tuple struct or variant pattern
-  --> $DIR/tuple_struct_destructure_fail.rs:25:27
+  --> $DIR/tuple_struct_destructure_fail.rs:23:27
    |
 LL |     TupleStruct(a, .., b, ..) = TupleStruct(0, 1);
    |                    --     ^^ can only be used once per tuple struct or variant pattern
@@ -7,7 +7,7 @@ LL |     TupleStruct(a, .., b, ..) = TupleStruct(0, 1);
    |                    previously used here
 
 error: `..` can only be used once per tuple struct or variant pattern
-  --> $DIR/tuple_struct_destructure_fail.rs:27:35
+  --> $DIR/tuple_struct_destructure_fail.rs:25:35
    |
 LL |     Enum::SingleVariant(a, .., b, ..) = Enum::SingleVariant(0, 1);
    |                            --     ^^ can only be used once per tuple struct or variant pattern
@@ -15,7 +15,7 @@ LL |     Enum::SingleVariant(a, .., b, ..) = Enum::SingleVariant(0, 1);
    |                            previously used here
 
 error[E0023]: this pattern has 3 fields, but the corresponding tuple struct has 2 fields
-  --> $DIR/tuple_struct_destructure_fail.rs:30:17
+  --> $DIR/tuple_struct_destructure_fail.rs:28:17
    |
 LL | struct TupleStruct<S, T>(S, T);
    |                          -  - tuple struct has 2 fields
@@ -24,7 +24,7 @@ LL |     TupleStruct(a, a, b) = TupleStruct(1, 2);
    |                 ^  ^  ^ expected 2 fields, found 3
 
 error[E0023]: this pattern has 1 field, but the corresponding tuple struct has 2 fields
-  --> $DIR/tuple_struct_destructure_fail.rs:32:17
+  --> $DIR/tuple_struct_destructure_fail.rs:30:17
    |
 LL | struct TupleStruct<S, T>(S, T);
    |                          -  - tuple struct has 2 fields
@@ -42,7 +42,7 @@ LL |     TupleStruct(..) = TupleStruct(1, 2);
    |                 ~~
 
 error[E0023]: this pattern has 3 fields, but the corresponding tuple variant has 2 fields
-  --> $DIR/tuple_struct_destructure_fail.rs:34:25
+  --> $DIR/tuple_struct_destructure_fail.rs:32:25
    |
 LL |     SingleVariant(S, T)
    |                   -  - tuple variant has 2 fields
@@ -51,7 +51,7 @@ LL |     Enum::SingleVariant(a, a, b) = Enum::SingleVariant(1, 2);
    |                         ^  ^  ^ expected 2 fields, found 3
 
 error[E0023]: this pattern has 1 field, but the corresponding tuple variant has 2 fields
-  --> $DIR/tuple_struct_destructure_fail.rs:36:25
+  --> $DIR/tuple_struct_destructure_fail.rs:34:25
    |
 LL |     SingleVariant(S, T)
    |                   -  - tuple variant has 2 fields
@@ -69,7 +69,7 @@ LL |     Enum::SingleVariant(..) = Enum::SingleVariant(1, 2);
    |                         ~~
 
 error[E0070]: invalid left-hand side of assignment
-  --> $DIR/tuple_struct_destructure_fail.rs:40:12
+  --> $DIR/tuple_struct_destructure_fail.rs:38:12
    |
 LL |     test() = TupleStruct(0, 0);
    |     ------ ^
@@ -77,7 +77,7 @@ LL |     test() = TupleStruct(0, 0);
    |     cannot assign to this expression
 
 error[E0070]: invalid left-hand side of assignment
-  --> $DIR/tuple_struct_destructure_fail.rs:42:14
+  --> $DIR/tuple_struct_destructure_fail.rs:40:14
    |
 LL |     (test)() = TupleStruct(0, 0);
    |     -------- ^
@@ -85,7 +85,7 @@ LL |     (test)() = TupleStruct(0, 0);
    |     cannot assign to this expression
 
 error[E0070]: invalid left-hand side of assignment
-  --> $DIR/tuple_struct_destructure_fail.rs:44:38
+  --> $DIR/tuple_struct_destructure_fail.rs:42:38
    |
 LL |     <Alias::<isize> as Test>::test() = TupleStruct(0, 0);
    |     -------------------------------- ^
diff --git a/src/test/ui/destructuring-assignment/underscore-range-expr-gating.rs b/src/test/ui/destructuring-assignment/underscore-range-expr-gating.rs
deleted file mode 100644
index 4ed4f56702c..00000000000
--- a/src/test/ui/destructuring-assignment/underscore-range-expr-gating.rs
+++ /dev/null
@@ -1,10 +0,0 @@
-fn main() {}
-
-struct S { x : u32 }
-
-#[cfg(FALSE)]
-fn foo() {
-    _; //~ ERROR destructuring assignments are unstable
-
-    S { x: 5, .. }; //~ ERROR destructuring assignments are unstable
-}
diff --git a/src/test/ui/destructuring-assignment/underscore-range-expr-gating.stderr b/src/test/ui/destructuring-assignment/underscore-range-expr-gating.stderr
deleted file mode 100644
index a5ed761a01c..00000000000
--- a/src/test/ui/destructuring-assignment/underscore-range-expr-gating.stderr
+++ /dev/null
@@ -1,21 +0,0 @@
-error[E0658]: destructuring assignments are unstable
-  --> $DIR/underscore-range-expr-gating.rs:7:5
-   |
-LL |     _;
-   |     ^
-   |
-   = note: see issue #71126 <https://github.com/rust-lang/rust/issues/71126> for more information
-   = help: add `#![feature(destructuring_assignment)]` to the crate attributes to enable
-
-error[E0658]: destructuring assignments are unstable
-  --> $DIR/underscore-range-expr-gating.rs:9:15
-   |
-LL |     S { x: 5, .. };
-   |               ^^
-   |
-   = note: see issue #71126 <https://github.com/rust-lang/rust/issues/71126> for more information
-   = help: add `#![feature(destructuring_assignment)]` to the crate attributes to enable
-
-error: aborting due to 2 previous errors
-
-For more information about this error, try `rustc --explain E0658`.
diff --git a/src/test/ui/destructuring-assignment/warn-unused-duplication.rs b/src/test/ui/destructuring-assignment/warn-unused-duplication.rs
index c1c5c2cd3ce..390f44b8aa5 100644
--- a/src/test/ui/destructuring-assignment/warn-unused-duplication.rs
+++ b/src/test/ui/destructuring-assignment/warn-unused-duplication.rs
@@ -1,7 +1,5 @@
 // run-pass
 
-#![feature(destructuring_assignment)]
-
 #![warn(unused_assignments)]
 
 fn main() {
diff --git a/src/test/ui/destructuring-assignment/warn-unused-duplication.stderr b/src/test/ui/destructuring-assignment/warn-unused-duplication.stderr
index b87ef6f1571..1df7a5f224f 100644
--- a/src/test/ui/destructuring-assignment/warn-unused-duplication.stderr
+++ b/src/test/ui/destructuring-assignment/warn-unused-duplication.stderr
@@ -1,11 +1,11 @@
 warning: value assigned to `a` is never read
-  --> $DIR/warn-unused-duplication.rs:11:6
+  --> $DIR/warn-unused-duplication.rs:9:6
    |
 LL |     (a, a) = (0, 1);
    |      ^
    |
 note: the lint level is defined here
-  --> $DIR/warn-unused-duplication.rs:5:9
+  --> $DIR/warn-unused-duplication.rs:3:9
    |
 LL | #![warn(unused_assignments)]
    |         ^^^^^^^^^^^^^^^^^^
diff --git a/src/test/ui/feature-gates/feature-gate-destructuring_assignment.rs b/src/test/ui/feature-gates/feature-gate-destructuring_assignment.rs
deleted file mode 100644
index e7801f0e8ec..00000000000
--- a/src/test/ui/feature-gates/feature-gate-destructuring_assignment.rs
+++ /dev/null
@@ -1,4 +0,0 @@
-fn main() {
-    let (a, b) = (0, 1);
-    (a, b) = (2, 3); //~ ERROR destructuring assignments are unstable
-}
diff --git a/src/test/ui/feature-gates/feature-gate-destructuring_assignment.stderr b/src/test/ui/feature-gates/feature-gate-destructuring_assignment.stderr
deleted file mode 100644
index 62e71decb32..00000000000
--- a/src/test/ui/feature-gates/feature-gate-destructuring_assignment.stderr
+++ /dev/null
@@ -1,14 +0,0 @@
-error[E0658]: destructuring assignments are unstable
-  --> $DIR/feature-gate-destructuring_assignment.rs:3:12
-   |
-LL |     (a, b) = (2, 3);
-   |     ------ ^
-   |     |
-   |     cannot assign to this expression
-   |
-   = note: see issue #71126 <https://github.com/rust-lang/rust/issues/71126> for more information
-   = help: add `#![feature(destructuring_assignment)]` to the crate attributes to enable
-
-error: aborting due to previous error
-
-For more information about this error, try `rustc --explain E0658`.
diff --git a/src/test/ui/issues/issue-77218/issue-77218-2.fixed b/src/test/ui/issues/issue-77218/issue-77218-2.fixed
index 06487fe0886..0e835d49c6d 100644
--- a/src/test/ui/issues/issue-77218/issue-77218-2.fixed
+++ b/src/test/ui/issues/issue-77218/issue-77218-2.fixed
@@ -1,5 +1,4 @@
 // run-rustfix
-#![feature(destructuring_assignment)]
 fn main() {
     let value = [7u8];
     while let Some(0) = value.get(0) { //~ ERROR invalid left-hand side of assignment
diff --git a/src/test/ui/issues/issue-77218/issue-77218-2.rs b/src/test/ui/issues/issue-77218/issue-77218-2.rs
index e19cec08e43..01dca1ae16c 100644
--- a/src/test/ui/issues/issue-77218/issue-77218-2.rs
+++ b/src/test/ui/issues/issue-77218/issue-77218-2.rs
@@ -1,5 +1,4 @@
 // run-rustfix
-#![feature(destructuring_assignment)]
 fn main() {
     let value = [7u8];
     while Some(0) = value.get(0) { //~ ERROR invalid left-hand side of assignment
diff --git a/src/test/ui/issues/issue-77218/issue-77218-2.stderr b/src/test/ui/issues/issue-77218/issue-77218-2.stderr
index 8d9eb2219d5..58c1c18f9a9 100644
--- a/src/test/ui/issues/issue-77218/issue-77218-2.stderr
+++ b/src/test/ui/issues/issue-77218/issue-77218-2.stderr
@@ -1,5 +1,5 @@
 error[E0070]: invalid left-hand side of assignment
-  --> $DIR/issue-77218-2.rs:5:19
+  --> $DIR/issue-77218-2.rs:4:19
    |
 LL |     while Some(0) = value.get(0) {
    |                -  ^
diff --git a/src/test/ui/issues/issue-77218/issue-77218.fixed b/src/test/ui/issues/issue-77218/issue-77218.fixed
index 4ea51109022..4907b43b9a9 100644
--- a/src/test/ui/issues/issue-77218/issue-77218.fixed
+++ b/src/test/ui/issues/issue-77218/issue-77218.fixed
@@ -1,6 +1,5 @@
 // run-rustfix
 fn main() {
     let value = [7u8];
-    while let Some(0) = value.get(0) { //~ ERROR destructuring assignments are unstable
-    }
+    while let Some(0) = value.get(0) {} //~ ERROR invalid left-hand side of assignment
 }
diff --git a/src/test/ui/issues/issue-77218/issue-77218.rs b/src/test/ui/issues/issue-77218/issue-77218.rs
index 0f3c12f5635..0ed154bf4d8 100644
--- a/src/test/ui/issues/issue-77218/issue-77218.rs
+++ b/src/test/ui/issues/issue-77218/issue-77218.rs
@@ -1,6 +1,5 @@
 // run-rustfix
 fn main() {
     let value = [7u8];
-    while Some(0) = value.get(0) { //~ ERROR destructuring assignments are unstable
-    }
+    while Some(0) = value.get(0) {} //~ ERROR invalid left-hand side of assignment
 }
diff --git a/src/test/ui/issues/issue-77218/issue-77218.stderr b/src/test/ui/issues/issue-77218/issue-77218.stderr
index 54f49609a44..eda635646df 100644
--- a/src/test/ui/issues/issue-77218/issue-77218.stderr
+++ b/src/test/ui/issues/issue-77218/issue-77218.stderr
@@ -1,18 +1,16 @@
-error[E0658]: destructuring assignments are unstable
+error[E0070]: invalid left-hand side of assignment
   --> $DIR/issue-77218.rs:4:19
    |
-LL |     while Some(0) = value.get(0) {
-   |           ------- ^
-   |           |
-   |           cannot assign to this expression
+LL |     while Some(0) = value.get(0) {}
+   |                -  ^
+   |                |
+   |                cannot assign to this expression
    |
-   = note: see issue #71126 <https://github.com/rust-lang/rust/issues/71126> for more information
-   = help: add `#![feature(destructuring_assignment)]` to the crate attributes to enable
 help: you might have meant to use pattern destructuring
    |
-LL |     while let Some(0) = value.get(0) {
+LL |     while let Some(0) = value.get(0) {}
    |           +++
 
 error: aborting due to previous error
 
-For more information about this error, try `rustc --explain E0658`.
+For more information about this error, try `rustc --explain E0070`.
diff --git a/src/test/ui/suggestions/fn-or-tuple-struct-with-underscore-args.rs b/src/test/ui/suggestions/fn-or-tuple-struct-with-underscore-args.rs
index 00638e04f5d..ae1dbfeea93 100644
--- a/src/test/ui/suggestions/fn-or-tuple-struct-with-underscore-args.rs
+++ b/src/test/ui/suggestions/fn-or-tuple-struct-with-underscore-args.rs
@@ -10,16 +10,10 @@ fn main() {
     let _: usize = foo(_, _);
     //~^ ERROR `_` can only be used on the left-hand side of an assignment
     //~| ERROR `_` can only be used on the left-hand side of an assignment
-    //~| ERROR destructuring assignments are unstable
-    //~| ERROR destructuring assignments are unstable
     let _: S = S(_, _);
     //~^ ERROR `_` can only be used on the left-hand side of an assignment
     //~| ERROR `_` can only be used on the left-hand side of an assignment
-    //~| ERROR destructuring assignments are unstable
-    //~| ERROR destructuring assignments are unstable
     let _: usize = T::baz(_, _);
     //~^ ERROR `_` can only be used on the left-hand side of an assignment
     //~| ERROR `_` can only be used on the left-hand side of an assignment
-    //~| ERROR destructuring assignments are unstable
-    //~| ERROR destructuring assignments are unstable
 }
diff --git a/src/test/ui/suggestions/fn-or-tuple-struct-with-underscore-args.stderr b/src/test/ui/suggestions/fn-or-tuple-struct-with-underscore-args.stderr
index 248fa6b9c9c..aa562030619 100644
--- a/src/test/ui/suggestions/fn-or-tuple-struct-with-underscore-args.stderr
+++ b/src/test/ui/suggestions/fn-or-tuple-struct-with-underscore-args.stderr
@@ -1,57 +1,3 @@
-error[E0658]: destructuring assignments are unstable
-  --> $DIR/fn-or-tuple-struct-with-underscore-args.rs:10:24
-   |
-LL |     let _: usize = foo(_, _);
-   |                        ^
-   |
-   = note: see issue #71126 <https://github.com/rust-lang/rust/issues/71126> for more information
-   = help: add `#![feature(destructuring_assignment)]` to the crate attributes to enable
-
-error[E0658]: destructuring assignments are unstable
-  --> $DIR/fn-or-tuple-struct-with-underscore-args.rs:10:27
-   |
-LL |     let _: usize = foo(_, _);
-   |                           ^
-   |
-   = note: see issue #71126 <https://github.com/rust-lang/rust/issues/71126> for more information
-   = help: add `#![feature(destructuring_assignment)]` to the crate attributes to enable
-
-error[E0658]: destructuring assignments are unstable
-  --> $DIR/fn-or-tuple-struct-with-underscore-args.rs:15:18
-   |
-LL |     let _: S = S(_, _);
-   |                  ^
-   |
-   = note: see issue #71126 <https://github.com/rust-lang/rust/issues/71126> for more information
-   = help: add `#![feature(destructuring_assignment)]` to the crate attributes to enable
-
-error[E0658]: destructuring assignments are unstable
-  --> $DIR/fn-or-tuple-struct-with-underscore-args.rs:15:21
-   |
-LL |     let _: S = S(_, _);
-   |                     ^
-   |
-   = note: see issue #71126 <https://github.com/rust-lang/rust/issues/71126> for more information
-   = help: add `#![feature(destructuring_assignment)]` to the crate attributes to enable
-
-error[E0658]: destructuring assignments are unstable
-  --> $DIR/fn-or-tuple-struct-with-underscore-args.rs:20:27
-   |
-LL |     let _: usize = T::baz(_, _);
-   |                           ^
-   |
-   = note: see issue #71126 <https://github.com/rust-lang/rust/issues/71126> for more information
-   = help: add `#![feature(destructuring_assignment)]` to the crate attributes to enable
-
-error[E0658]: destructuring assignments are unstable
-  --> $DIR/fn-or-tuple-struct-with-underscore-args.rs:20:30
-   |
-LL |     let _: usize = T::baz(_, _);
-   |                              ^
-   |
-   = note: see issue #71126 <https://github.com/rust-lang/rust/issues/71126> for more information
-   = help: add `#![feature(destructuring_assignment)]` to the crate attributes to enable
-
 error: in expressions, `_` can only be used on the left-hand side of an assignment
   --> $DIR/fn-or-tuple-struct-with-underscore-args.rs:10:24
    |
@@ -65,29 +11,28 @@ LL |     let _: usize = foo(_, _);
    |                           ^ `_` not allowed here
 
 error: in expressions, `_` can only be used on the left-hand side of an assignment
-  --> $DIR/fn-or-tuple-struct-with-underscore-args.rs:15:18
+  --> $DIR/fn-or-tuple-struct-with-underscore-args.rs:13:18
    |
 LL |     let _: S = S(_, _);
    |                  ^ `_` not allowed here
 
 error: in expressions, `_` can only be used on the left-hand side of an assignment
-  --> $DIR/fn-or-tuple-struct-with-underscore-args.rs:15:21
+  --> $DIR/fn-or-tuple-struct-with-underscore-args.rs:13:21
    |
 LL |     let _: S = S(_, _);
    |                     ^ `_` not allowed here
 
 error: in expressions, `_` can only be used on the left-hand side of an assignment
-  --> $DIR/fn-or-tuple-struct-with-underscore-args.rs:20:27
+  --> $DIR/fn-or-tuple-struct-with-underscore-args.rs:16:27
    |
 LL |     let _: usize = T::baz(_, _);
    |                           ^ `_` not allowed here
 
 error: in expressions, `_` can only be used on the left-hand side of an assignment
-  --> $DIR/fn-or-tuple-struct-with-underscore-args.rs:20:30
+  --> $DIR/fn-or-tuple-struct-with-underscore-args.rs:16:30
    |
 LL |     let _: usize = T::baz(_, _);
    |                              ^ `_` not allowed here
 
-error: aborting due to 12 previous errors
+error: aborting due to 6 previous errors
 
-For more information about this error, try `rustc --explain E0658`.
diff --git a/src/test/ui/suggestions/if-let-typo.rs b/src/test/ui/suggestions/if-let-typo.rs
index b9714b67e58..375bd3f03c9 100644
--- a/src/test/ui/suggestions/if-let-typo.rs
+++ b/src/test/ui/suggestions/if-let-typo.rs
@@ -3,12 +3,9 @@ fn main() {
     let bar = None;
     if Some(x) = foo {} //~ ERROR cannot find value `x` in this scope
     //~^ ERROR mismatched types
-    //~^^ ERROR destructuring assignments are unstable
     if Some(foo) = bar {} //~ ERROR mismatched types
-    //~^ ERROR destructuring assignments are unstable
     if 3 = foo {} //~ ERROR mismatched types
     if Some(3) = foo {} //~ ERROR mismatched types
-    //~^ ERROR destructuring assignments are unstable
-    //~^^ ERROR invalid left-hand side of assignment
+    //~^ ERROR invalid left-hand side of assignment
     if x = 5 {}  //~ ERROR cannot find value `x` in this scope
 }
diff --git a/src/test/ui/suggestions/if-let-typo.stderr b/src/test/ui/suggestions/if-let-typo.stderr
index 058f42f2200..3d9ac40ec36 100644
--- a/src/test/ui/suggestions/if-let-typo.stderr
+++ b/src/test/ui/suggestions/if-let-typo.stderr
@@ -10,7 +10,7 @@ LL |     if let Some(x) = foo {}
    |        +++
 
 error[E0425]: cannot find value `x` in this scope
-  --> $DIR/if-let-typo.rs:13:8
+  --> $DIR/if-let-typo.rs:10:8
    |
 LL |     if x = 5 {}
    |        ^ not found in this scope
@@ -20,39 +20,6 @@ help: you might have meant to use pattern matching
 LL |     if let x = 5 {}
    |        +++
 
-error[E0658]: destructuring assignments are unstable
-  --> $DIR/if-let-typo.rs:4:16
-   |
-LL |     if Some(x) = foo {}
-   |        ------- ^
-   |        |
-   |        cannot assign to this expression
-   |
-   = note: see issue #71126 <https://github.com/rust-lang/rust/issues/71126> for more information
-   = help: add `#![feature(destructuring_assignment)]` to the crate attributes to enable
-
-error[E0658]: destructuring assignments are unstable
-  --> $DIR/if-let-typo.rs:7:18
-   |
-LL |     if Some(foo) = bar {}
-   |        --------- ^
-   |        |
-   |        cannot assign to this expression
-   |
-   = note: see issue #71126 <https://github.com/rust-lang/rust/issues/71126> for more information
-   = help: add `#![feature(destructuring_assignment)]` to the crate attributes to enable
-
-error[E0658]: destructuring assignments are unstable
-  --> $DIR/if-let-typo.rs:10:16
-   |
-LL |     if Some(3) = foo {}
-   |        ------- ^
-   |        |
-   |        cannot assign to this expression
-   |
-   = note: see issue #71126 <https://github.com/rust-lang/rust/issues/71126> for more information
-   = help: add `#![feature(destructuring_assignment)]` to the crate attributes to enable
-
 error[E0308]: mismatched types
   --> $DIR/if-let-typo.rs:4:8
    |
@@ -60,19 +27,19 @@ LL |     if Some(x) = foo {}
    |        ^^^^^^^^^^^^^ expected `bool`, found `()`
 
 error[E0308]: mismatched types
-  --> $DIR/if-let-typo.rs:7:8
+  --> $DIR/if-let-typo.rs:6:8
    |
 LL |     if Some(foo) = bar {}
    |        ^^^^^^^^^^^^^^^ expected `bool`, found `()`
 
 error[E0308]: mismatched types
-  --> $DIR/if-let-typo.rs:9:8
+  --> $DIR/if-let-typo.rs:7:8
    |
 LL |     if 3 = foo {}
    |        ^^^^^^^ expected `bool`, found `()`
 
 error[E0070]: invalid left-hand side of assignment
-  --> $DIR/if-let-typo.rs:10:16
+  --> $DIR/if-let-typo.rs:8:16
    |
 LL |     if Some(3) = foo {}
    |             -  ^
@@ -80,12 +47,12 @@ LL |     if Some(3) = foo {}
    |             cannot assign to this expression
 
 error[E0308]: mismatched types
-  --> $DIR/if-let-typo.rs:10:8
+  --> $DIR/if-let-typo.rs:8:8
    |
 LL |     if Some(3) = foo {}
    |        ^^^^^^^^^^^^^ expected `bool`, found `()`
 
-error: aborting due to 10 previous errors
+error: aborting due to 7 previous errors
 
-Some errors have detailed explanations: E0070, E0308, E0425, E0658.
+Some errors have detailed explanations: E0070, E0308, E0425.
 For more information about an error, try `rustc --explain E0070`.
diff --git a/src/test/ui/weird-exprs.rs b/src/test/ui/weird-exprs.rs
index 2d7ebbf1d5b..a02b3230689 100644
--- a/src/test/ui/weird-exprs.rs
+++ b/src/test/ui/weird-exprs.rs
@@ -1,7 +1,6 @@
 // run-pass
 
 #![feature(generators)]
-#![feature(destructuring_assignment)]
 
 #![allow(non_camel_case_types)]
 #![allow(dead_code)]