Mark `trait_upcasting` feature no longer incomplete.

25 files changed, 83 insertions, 83 deletions

diff --git a/compiler/rustc_feature/src/active.rs b/compiler/rustc_feature/src/active.rs
index 09a747662e2..b6fe48f1bb8 100644
--- a/compiler/rustc_feature/src/active.rs
+++ b/compiler/rustc_feature/src/active.rs
@@ -510,9 +510,9 @@ declare_features! (
     (active, thread_local, "1.0.0", Some(29594), None),
     /// Allows defining `trait X = A + B;` alias items.
     (active, trait_alias, "1.24.0", Some(41517), None),
-    /// Allows upcasting trait objects via supertraits.
-    /// Trait upcasting is casting, e.g., `dyn Foo -> dyn Bar` where `Foo: Bar`.
-    (incomplete, trait_upcasting, "1.56.0", Some(65991), None),
+    /// Allows dyn upcasting trait objects via supertraits.
+    /// Dyn upcasting is casting, e.g., `dyn Foo -> dyn Bar` where `Foo: Bar`.
+    (active, trait_upcasting, "1.56.0", Some(65991), None),
     /// Allows #[repr(transparent)] on unions (RFC 2645).
     (active, transparent_unions, "1.37.0", Some(60405), None),
     /// Allows inconsistent bounds in where clauses.
diff --git a/src/test/ui/codegen/issue-99551.rs b/src/test/ui/codegen/issue-99551.rs
index f24874c992e..b223aff4e94 100644
--- a/src/test/ui/codegen/issue-99551.rs
+++ b/src/test/ui/codegen/issue-99551.rs
@@ -1,6 +1,5 @@
 // build-pass
 #![feature(trait_upcasting)]
-#![allow(incomplete_features)]
 
 pub trait A {}
 pub trait B {}
diff --git a/src/test/ui/traits/trait-upcasting/basic.rs b/src/test/ui/traits/trait-upcasting/basic.rs
index 484a222bc01..570ec5160bf 100644
--- a/src/test/ui/traits/trait-upcasting/basic.rs
+++ b/src/test/ui/traits/trait-upcasting/basic.rs
@@ -1,7 +1,6 @@
 // run-pass
 
 #![feature(trait_upcasting)]
-#![allow(incomplete_features)]
 
 trait Foo: PartialEq<i32> + std::fmt::Debug + Send + Sync {
     fn a(&self) -> i32 {
diff --git a/src/test/ui/traits/trait-upcasting/correct-supertrait-substitution.rs b/src/test/ui/traits/trait-upcasting/correct-supertrait-substitution.rs
index 8d0a9ef0ace..eae5cf8d58d 100644
--- a/src/test/ui/traits/trait-upcasting/correct-supertrait-substitution.rs
+++ b/src/test/ui/traits/trait-upcasting/correct-supertrait-substitution.rs
@@ -1,6 +1,5 @@
 // run-pass
 #![feature(trait_upcasting)]
-#![allow(incomplete_features)]
 
 trait Foo<T: Default + ToString>: Bar<i32> + Bar<T> {}
 trait Bar<T: Default + ToString> {
diff --git a/src/test/ui/traits/trait-upcasting/diamond.rs b/src/test/ui/traits/trait-upcasting/diamond.rs
index e4e23c1a26e..a4f81c464b4 100644
--- a/src/test/ui/traits/trait-upcasting/diamond.rs
+++ b/src/test/ui/traits/trait-upcasting/diamond.rs
@@ -1,7 +1,6 @@
 // run-pass
 
 #![feature(trait_upcasting)]
-#![allow(incomplete_features)]
 
 trait Foo: PartialEq<i32> + std::fmt::Debug + Send + Sync {
     fn a(&self) -> i32 {
diff --git a/src/test/ui/traits/trait-upcasting/invalid-upcast.rs b/src/test/ui/traits/trait-upcasting/invalid-upcast.rs
index 24022450406..e634bbd5ac6 100644
--- a/src/test/ui/traits/trait-upcasting/invalid-upcast.rs
+++ b/src/test/ui/traits/trait-upcasting/invalid-upcast.rs
@@ -1,5 +1,4 @@
 #![feature(trait_upcasting)]
-#![allow(incomplete_features)]
 
 trait Foo {
     fn a(&self) -> i32 {
diff --git a/src/test/ui/traits/trait-upcasting/invalid-upcast.stderr b/src/test/ui/traits/trait-upcasting/invalid-upcast.stderr
index b4530ed0c3a..3aa21ee3ddd 100644
--- a/src/test/ui/traits/trait-upcasting/invalid-upcast.stderr
+++ b/src/test/ui/traits/trait-upcasting/invalid-upcast.stderr
@@ -1,5 +1,5 @@
 error[E0308]: mismatched types
-  --> $DIR/invalid-upcast.rs:54:35
+  --> $DIR/invalid-upcast.rs:53:35
    |
 LL |     let _: &dyn std::fmt::Debug = baz;
    |            --------------------   ^^^ expected trait `Debug`, found trait `Baz`
@@ -10,7 +10,7 @@ LL |     let _: &dyn std::fmt::Debug = baz;
               found reference `&dyn Baz`
 
 error[E0308]: mismatched types
-  --> $DIR/invalid-upcast.rs:56:24
+  --> $DIR/invalid-upcast.rs:55:24
    |
 LL |     let _: &dyn Send = baz;
    |            ---------   ^^^ expected trait `Send`, found trait `Baz`
@@ -21,7 +21,7 @@ LL |     let _: &dyn Send = baz;
               found reference `&dyn Baz`
 
 error[E0308]: mismatched types
-  --> $DIR/invalid-upcast.rs:58:24
+  --> $DIR/invalid-upcast.rs:57:24
    |
 LL |     let _: &dyn Sync = baz;
    |            ---------   ^^^ expected trait `Sync`, found trait `Baz`
@@ -32,7 +32,7 @@ LL |     let _: &dyn Sync = baz;
               found reference `&dyn Baz`
 
 error[E0308]: mismatched types
-  --> $DIR/invalid-upcast.rs:61:25
+  --> $DIR/invalid-upcast.rs:60:25
    |
 LL |     let bar: &dyn Bar = baz;
    |              --------   ^^^ expected trait `Bar`, found trait `Baz`
@@ -43,7 +43,7 @@ LL |     let bar: &dyn Bar = baz;
               found reference `&dyn Baz`
 
 error[E0308]: mismatched types
-  --> $DIR/invalid-upcast.rs:63:35
+  --> $DIR/invalid-upcast.rs:62:35
    |
 LL |     let _: &dyn std::fmt::Debug = bar;
    |            --------------------   ^^^ expected trait `Debug`, found trait `Bar`
@@ -54,7 +54,7 @@ LL |     let _: &dyn std::fmt::Debug = bar;
               found reference `&dyn Bar`
 
 error[E0308]: mismatched types
-  --> $DIR/invalid-upcast.rs:65:24
+  --> $DIR/invalid-upcast.rs:64:24
    |
 LL |     let _: &dyn Send = bar;
    |            ---------   ^^^ expected trait `Send`, found trait `Bar`
@@ -65,7 +65,7 @@ LL |     let _: &dyn Send = bar;
               found reference `&dyn Bar`
 
 error[E0308]: mismatched types
-  --> $DIR/invalid-upcast.rs:67:24
+  --> $DIR/invalid-upcast.rs:66:24
    |
 LL |     let _: &dyn Sync = bar;
    |            ---------   ^^^ expected trait `Sync`, found trait `Bar`
@@ -76,7 +76,7 @@ LL |     let _: &dyn Sync = bar;
               found reference `&dyn Bar`
 
 error[E0308]: mismatched types
-  --> $DIR/invalid-upcast.rs:70:25
+  --> $DIR/invalid-upcast.rs:69:25
    |
 LL |     let foo: &dyn Foo = baz;
    |              --------   ^^^ expected trait `Foo`, found trait `Baz`
@@ -87,7 +87,7 @@ LL |     let foo: &dyn Foo = baz;
               found reference `&dyn Baz`
 
 error[E0308]: mismatched types
-  --> $DIR/invalid-upcast.rs:72:35
+  --> $DIR/invalid-upcast.rs:71:35
    |
 LL |     let _: &dyn std::fmt::Debug = foo;
    |            --------------------   ^^^ expected trait `Debug`, found trait `Foo`
@@ -98,7 +98,7 @@ LL |     let _: &dyn std::fmt::Debug = foo;
               found reference `&dyn Foo`
 
 error[E0308]: mismatched types
-  --> $DIR/invalid-upcast.rs:74:24
+  --> $DIR/invalid-upcast.rs:73:24
    |
 LL |     let _: &dyn Send = foo;
    |            ---------   ^^^ expected trait `Send`, found trait `Foo`
@@ -109,7 +109,7 @@ LL |     let _: &dyn Send = foo;
               found reference `&dyn Foo`
 
 error[E0308]: mismatched types
-  --> $DIR/invalid-upcast.rs:76:24
+  --> $DIR/invalid-upcast.rs:75:24
    |
 LL |     let _: &dyn Sync = foo;
    |            ---------   ^^^ expected trait `Sync`, found trait `Foo`
@@ -120,7 +120,7 @@ LL |     let _: &dyn Sync = foo;
               found reference `&dyn Foo`
 
 error[E0308]: mismatched types
-  --> $DIR/invalid-upcast.rs:79:25
+  --> $DIR/invalid-upcast.rs:78:25
    |
 LL |     let foo: &dyn Foo = bar;
    |              --------   ^^^ expected trait `Foo`, found trait `Bar`
@@ -131,7 +131,7 @@ LL |     let foo: &dyn Foo = bar;
               found reference `&dyn Bar`
 
 error[E0308]: mismatched types
-  --> $DIR/invalid-upcast.rs:81:35
+  --> $DIR/invalid-upcast.rs:80:35
    |
 LL |     let _: &dyn std::fmt::Debug = foo;
    |            --------------------   ^^^ expected trait `Debug`, found trait `Foo`
@@ -142,7 +142,7 @@ LL |     let _: &dyn std::fmt::Debug = foo;
               found reference `&dyn Foo`
 
 error[E0308]: mismatched types
-  --> $DIR/invalid-upcast.rs:83:24
+  --> $DIR/invalid-upcast.rs:82:24
    |
 LL |     let _: &dyn Send = foo;
    |            ---------   ^^^ expected trait `Send`, found trait `Foo`
@@ -153,7 +153,7 @@ LL |     let _: &dyn Send = foo;
               found reference `&dyn Foo`
 
 error[E0308]: mismatched types
-  --> $DIR/invalid-upcast.rs:85:24
+  --> $DIR/invalid-upcast.rs:84:24
    |
 LL |     let _: &dyn Sync = foo;
    |            ---------   ^^^ expected trait `Sync`, found trait `Foo`
diff --git a/src/test/ui/traits/trait-upcasting/issue-11515-upcast-fn_mut-fn.rs b/src/test/ui/traits/trait-upcasting/issue-11515-upcast-fn_mut-fn.rs
index 6d88002540c..b672963ae98 100644
--- a/src/test/ui/traits/trait-upcasting/issue-11515-upcast-fn_mut-fn.rs
+++ b/src/test/ui/traits/trait-upcasting/issue-11515-upcast-fn_mut-fn.rs
@@ -1,6 +1,5 @@
 // run-pass
 #![feature(trait_upcasting)]
-#![allow(incomplete_features)]
 
 struct Test {
     func: Box<dyn FnMut() + 'static>,
diff --git a/src/test/ui/traits/trait-upcasting/lifetime.rs b/src/test/ui/traits/trait-upcasting/lifetime.rs
index f029a6f081f..9825158c2dd 100644
--- a/src/test/ui/traits/trait-upcasting/lifetime.rs
+++ b/src/test/ui/traits/trait-upcasting/lifetime.rs
@@ -1,7 +1,6 @@
 // run-pass
 
 #![feature(trait_upcasting)]
-#![allow(incomplete_features)]
 
 trait Foo: PartialEq<i32> + std::fmt::Debug + Send + Sync {
     fn a(&self) -> i32 {
diff --git a/src/test/ui/traits/trait-upcasting/multiple-occurrence-ambiguousity.rs b/src/test/ui/traits/trait-upcasting/multiple-occurrence-ambiguousity.rs
index 6986ad62172..2e53a00a90e 100644
--- a/src/test/ui/traits/trait-upcasting/multiple-occurrence-ambiguousity.rs
+++ b/src/test/ui/traits/trait-upcasting/multiple-occurrence-ambiguousity.rs
@@ -1,12 +1,11 @@
 // check-fail
 #![feature(trait_upcasting)]
-#![allow(incomplete_features)]
 
 trait Bar<T> {
     fn bar(&self, _: T) {}
 }
 
-trait Foo : Bar<i32> + Bar<u32> {
+trait Foo: Bar<i32> + Bar<u32> {
     fn foo(&self, _: ()) {}
 }
 
diff --git a/src/test/ui/traits/trait-upcasting/multiple-occurrence-ambiguousity.stderr b/src/test/ui/traits/trait-upcasting/multiple-occurrence-ambiguousity.stderr
index 9564813512c..0ad18be03cd 100644
--- a/src/test/ui/traits/trait-upcasting/multiple-occurrence-ambiguousity.stderr
+++ b/src/test/ui/traits/trait-upcasting/multiple-occurrence-ambiguousity.stderr
@@ -1,5 +1,5 @@
 error[E0308]: mismatched types
-  --> $DIR/multiple-occurrence-ambiguousity.rs:21:26
+  --> $DIR/multiple-occurrence-ambiguousity.rs:20:26
    |
 LL |     let t: &dyn Bar<_> = s;
    |            -----------   ^ expected trait `Bar`, found trait `Foo`
diff --git a/src/test/ui/traits/trait-upcasting/replace-vptr.rs b/src/test/ui/traits/trait-upcasting/replace-vptr.rs
index 1164e43611a..9ccfc9306ac 100644
--- a/src/test/ui/traits/trait-upcasting/replace-vptr.rs
+++ b/src/test/ui/traits/trait-upcasting/replace-vptr.rs
@@ -1,7 +1,6 @@
 // run-pass
 
 #![feature(trait_upcasting)]
-#![allow(incomplete_features)]
 
 trait A {
     fn foo_a(&self);
diff --git a/src/test/ui/traits/trait-upcasting/struct.rs b/src/test/ui/traits/trait-upcasting/struct.rs
index 0f3cb285bf4..a3e41696956 100644
--- a/src/test/ui/traits/trait-upcasting/struct.rs
+++ b/src/test/ui/traits/trait-upcasting/struct.rs
@@ -1,7 +1,6 @@
 // run-pass
 
 #![feature(trait_upcasting)]
-#![allow(incomplete_features)]
 
 use std::rc::Rc;
 use std::sync::Arc;
diff --git a/src/test/ui/traits/trait-upcasting/subtrait-method.rs b/src/test/ui/traits/trait-upcasting/subtrait-method.rs
index 3508e15284b..136d15af0e8 100644
--- a/src/test/ui/traits/trait-upcasting/subtrait-method.rs
+++ b/src/test/ui/traits/trait-upcasting/subtrait-method.rs
@@ -1,5 +1,4 @@
 #![feature(trait_upcasting)]
-#![allow(incomplete_features)]
 
 trait Foo: PartialEq<i32> + std::fmt::Debug + Send + Sync {
     fn a(&self) -> i32 {
diff --git a/src/test/ui/traits/trait-upcasting/subtrait-method.stderr b/src/test/ui/traits/trait-upcasting/subtrait-method.stderr
index af7a410f6d9..918159e845b 100644
--- a/src/test/ui/traits/trait-upcasting/subtrait-method.stderr
+++ b/src/test/ui/traits/trait-upcasting/subtrait-method.stderr
@@ -1,64 +1,64 @@
 error[E0599]: no method named `c` found for reference `&dyn Bar` in the current scope
-  --> $DIR/subtrait-method.rs:56:9
+  --> $DIR/subtrait-method.rs:55:9
    |
 LL |     bar.c();
    |         ^ help: there is a method with a similar name: `a`
    |
    = help: items from traits can only be used if the trait is implemented and in scope
 note: `Baz` defines an item `c`, perhaps you need to implement it
-  --> $DIR/subtrait-method.rs:28:1
+  --> $DIR/subtrait-method.rs:27:1
    |
 LL | trait Baz: Bar {
    | ^^^^^^^^^^^^^^
 
 error[E0599]: no method named `b` found for reference `&dyn Foo` in the current scope
-  --> $DIR/subtrait-method.rs:60:9
+  --> $DIR/subtrait-method.rs:59:9
    |
 LL |     foo.b();
    |         ^ help: there is a method with a similar name: `a`
    |
    = help: items from traits can only be used if the trait is implemented and in scope
 note: `Bar` defines an item `b`, perhaps you need to implement it
-  --> $DIR/subtrait-method.rs:18:1
+  --> $DIR/subtrait-method.rs:17:1
    |
 LL | trait Bar: Foo {
    | ^^^^^^^^^^^^^^
 
 error[E0599]: no method named `c` found for reference `&dyn Foo` in the current scope
-  --> $DIR/subtrait-method.rs:62:9
+  --> $DIR/subtrait-method.rs:61:9
    |
 LL |     foo.c();
    |         ^ help: there is a method with a similar name: `a`
    |
    = help: items from traits can only be used if the trait is implemented and in scope
 note: `Baz` defines an item `c`, perhaps you need to implement it
-  --> $DIR/subtrait-method.rs:28:1
+  --> $DIR/subtrait-method.rs:27:1
    |
 LL | trait Baz: Bar {
    | ^^^^^^^^^^^^^^
 
 error[E0599]: no method named `b` found for reference `&dyn Foo` in the current scope
-  --> $DIR/subtrait-method.rs:66:9
+  --> $DIR/subtrait-method.rs:65:9
    |
 LL |     foo.b();
    |         ^ help: there is a method with a similar name: `a`
    |
    = help: items from traits can only be used if the trait is implemented and in scope
 note: `Bar` defines an item `b`, perhaps you need to implement it
-  --> $DIR/subtrait-method.rs:18:1
+  --> $DIR/subtrait-method.rs:17:1
    |
 LL | trait Bar: Foo {
    | ^^^^^^^^^^^^^^
 
 error[E0599]: no method named `c` found for reference `&dyn Foo` in the current scope
-  --> $DIR/subtrait-method.rs:68:9
+  --> $DIR/subtrait-method.rs:67:9
    |
 LL |     foo.c();
    |         ^ help: there is a method with a similar name: `a`
    |
    = help: items from traits can only be used if the trait is implemented and in scope
 note: `Baz` defines an item `c`, perhaps you need to implement it
-  --> $DIR/subtrait-method.rs:28:1
+  --> $DIR/subtrait-method.rs:27:1
    |
 LL | trait Baz: Bar {
    | ^^^^^^^^^^^^^^
diff --git a/src/test/ui/traits/trait-upcasting/type-checking-test-1.rs b/src/test/ui/traits/trait-upcasting/type-checking-test-1.rs
index 79ddedd4187..6bc9f4a75d3 100644
--- a/src/test/ui/traits/trait-upcasting/type-checking-test-1.rs
+++ b/src/test/ui/traits/trait-upcasting/type-checking-test-1.rs
@@ -1,5 +1,4 @@
 #![feature(trait_upcasting)]
-#![allow(incomplete_features)]
 
 trait Foo: Bar<i32> + Bar<u32> {}
 trait Bar<T> {
diff --git a/src/test/ui/traits/trait-upcasting/type-checking-test-1.stderr b/src/test/ui/traits/trait-upcasting/type-checking-test-1.stderr
index 3985372119e..fe269d8e99b 100644
--- a/src/test/ui/traits/trait-upcasting/type-checking-test-1.stderr
+++ b/src/test/ui/traits/trait-upcasting/type-checking-test-1.stderr
@@ -1,5 +1,5 @@
 error[E0605]: non-primitive cast: `&dyn Foo` as `&dyn Bar<_>`
-  --> $DIR/type-checking-test-1.rs:17:13
+  --> $DIR/type-checking-test-1.rs:16:13
    |
 LL |     let _ = x as &dyn Bar<_>; // Ambiguous
    |             ^^^^^^^^^^^^^^^^ invalid cast
@@ -10,7 +10,7 @@ LL |     let _ = &x as &dyn Bar<_>; // Ambiguous
    |             +
 
 error[E0277]: the trait bound `&dyn Foo: Bar<_>` is not satisfied
-  --> $DIR/type-checking-test-1.rs:17:13
+  --> $DIR/type-checking-test-1.rs:16:13
    |
 LL |     let _ = x as &dyn Bar<_>; // Ambiguous
    |             ^ the trait `Bar<_>` is not implemented for `&dyn Foo`
diff --git a/src/test/ui/traits/trait-upcasting/type-checking-test-2.rs b/src/test/ui/traits/trait-upcasting/type-checking-test-2.rs
index 32754c53803..36b11dffdb1 100644
--- a/src/test/ui/traits/trait-upcasting/type-checking-test-2.rs
+++ b/src/test/ui/traits/trait-upcasting/type-checking-test-2.rs
@@ -1,5 +1,4 @@
 #![feature(trait_upcasting)]
-#![allow(incomplete_features)]
 
 trait Foo<T>: Bar<i32> + Bar<T> {}
 trait Bar<T> {
diff --git a/src/test/ui/traits/trait-upcasting/type-checking-test-2.stderr b/src/test/ui/traits/trait-upcasting/type-checking-test-2.stderr
index 93c71f54eb5..ef007d5cb90 100644
--- a/src/test/ui/traits/trait-upcasting/type-checking-test-2.stderr
+++ b/src/test/ui/traits/trait-upcasting/type-checking-test-2.stderr
@@ -1,5 +1,5 @@
 error[E0605]: non-primitive cast: `&dyn Foo<i32>` as `&dyn Bar<u32>`
-  --> $DIR/type-checking-test-2.rs:20:13
+  --> $DIR/type-checking-test-2.rs:19:13
    |
 LL |     let _ = x as &dyn Bar<u32>; // Error
    |             ^^^^^^^^^^^^^^^^^^ invalid cast
@@ -10,7 +10,7 @@ LL |     let _ = &x as &dyn Bar<u32>; // Error
    |             +
 
 error[E0277]: the trait bound `&dyn Foo<i32>: Bar<u32>` is not satisfied
-  --> $DIR/type-checking-test-2.rs:20:13
+  --> $DIR/type-checking-test-2.rs:19:13
    |
 LL |     let _ = x as &dyn Bar<u32>; // Error
    |             ^ the trait `Bar<u32>` is not implemented for `&dyn Foo<i32>`
@@ -18,7 +18,7 @@ LL |     let _ = x as &dyn Bar<u32>; // Error
    = note: required for the cast from `&dyn Foo<i32>` to the object type `dyn Bar<u32>`
 
 error[E0605]: non-primitive cast: `&dyn Foo<u32>` as `&dyn Bar<_>`
-  --> $DIR/type-checking-test-2.rs:26:13
+  --> $DIR/type-checking-test-2.rs:25:13
    |
 LL |     let a = x as &dyn Bar<_>; // Ambiguous
    |             ^^^^^^^^^^^^^^^^ invalid cast
@@ -29,7 +29,7 @@ LL |     let a = &x as &dyn Bar<_>; // Ambiguous
    |             +
 
 error[E0277]: the trait bound `&dyn Foo<u32>: Bar<_>` is not satisfied
-  --> $DIR/type-checking-test-2.rs:26:13
+  --> $DIR/type-checking-test-2.rs:25:13
    |
 LL |     let a = x as &dyn Bar<_>; // Ambiguous
    |             ^ the trait `Bar<_>` is not implemented for `&dyn Foo<u32>`
diff --git a/src/test/ui/traits/trait-upcasting/type-checking-test-3.polonius.stderr b/src/test/ui/traits/trait-upcasting/type-checking-test-3.polonius.stderr
index e48ba709af1..e6cb6a75399 100644
--- a/src/test/ui/traits/trait-upcasting/type-checking-test-3.polonius.stderr
+++ b/src/test/ui/traits/trait-upcasting/type-checking-test-3.polonius.stderr
@@ -1,22 +1,18 @@
 error: lifetime may not live long enough
-  --> $DIR/type-checking-test-3.rs:13:13
+  --> $DIR/type-checking-test-3.rs:11:13
    |
 LL | fn test_wrong1<'a>(x: &dyn Foo<'static>, y: &'a u32) {
    |                -- lifetime `'a` defined here
 LL |     let _ = x as &dyn Bar<'a>; // Error
    |             ^^^^^^^^^^^^^^^^^ type annotation requires that `'a` must outlive `'static`
-   |
-   = help: consider replacing `'a` with `'static`
 
 error: lifetime may not live long enough
-  --> $DIR/type-checking-test-3.rs:18:13
+  --> $DIR/type-checking-test-3.rs:16:13
    |
 LL | fn test_wrong2<'a>(x: &dyn Foo<'a>) {
    |                -- lifetime `'a` defined here
 LL |     let _ = x as &dyn Bar<'static>; // Error
    |             ^^^^^^^^^^^^^^^^^^^^^^ type annotation requires that `'a` must outlive `'static`
-   |
-   = help: consider replacing `'a` with `'static`
 
 error: aborting due to 2 previous errors
 
diff --git a/src/test/ui/traits/trait-upcasting/type-checking-test-3.rs b/src/test/ui/traits/trait-upcasting/type-checking-test-3.rs
index b3aa2279a30..b2db3a12797 100644
--- a/src/test/ui/traits/trait-upcasting/type-checking-test-3.rs
+++ b/src/test/ui/traits/trait-upcasting/type-checking-test-3.rs
@@ -1,5 +1,4 @@
 #![feature(trait_upcasting)]
-#![allow(incomplete_features)]
 
 trait Foo<'a>: Bar<'a> {}
 trait Bar<'a> {}
@@ -10,12 +9,12 @@ fn test_correct(x: &dyn Foo<'static>) {
 
 fn test_wrong1<'a>(x: &dyn Foo<'static>, y: &'a u32) {
     let _ = x as &dyn Bar<'a>; // Error
-    //~^ ERROR lifetime may not live long enough
+                               //~^ ERROR lifetime may not live long enough
 }
 
 fn test_wrong2<'a>(x: &dyn Foo<'a>) {
     let _ = x as &dyn Bar<'static>; // Error
-    //~^ ERROR lifetime may not live long enough
+                                    //~^ ERROR lifetime may not live long enough
 }
 
 fn main() {}
diff --git a/src/test/ui/traits/trait-upcasting/type-checking-test-3.stderr b/src/test/ui/traits/trait-upcasting/type-checking-test-3.stderr
index 5ad151b5092..e6cb6a75399 100644
--- a/src/test/ui/traits/trait-upcasting/type-checking-test-3.stderr
+++ b/src/test/ui/traits/trait-upcasting/type-checking-test-3.stderr
@@ -1,5 +1,5 @@
 error: lifetime may not live long enough
-  --> $DIR/type-checking-test-3.rs:12:13
+  --> $DIR/type-checking-test-3.rs:11:13
    |
 LL | fn test_wrong1<'a>(x: &dyn Foo<'static>, y: &'a u32) {
    |                -- lifetime `'a` defined here
@@ -7,7 +7,7 @@ LL |     let _ = x as &dyn Bar<'a>; // Error
    |             ^^^^^^^^^^^^^^^^^ type annotation requires that `'a` must outlive `'static`
 
 error: lifetime may not live long enough
-  --> $DIR/type-checking-test-3.rs:17:13
+  --> $DIR/type-checking-test-3.rs:16:13
    |
 LL | fn test_wrong2<'a>(x: &dyn Foo<'a>) {
    |                -- lifetime `'a` defined here
diff --git a/src/test/ui/traits/trait-upcasting/type-checking-test-4.polonius.stderr b/src/test/ui/traits/trait-upcasting/type-checking-test-4.polonius.stderr
index a3411f40ad0..8d506e5807e 100644
--- a/src/test/ui/traits/trait-upcasting/type-checking-test-4.polonius.stderr
+++ b/src/test/ui/traits/trait-upcasting/type-checking-test-4.polonius.stderr
@@ -1,33 +1,52 @@
 error: lifetime may not live long enough
-  --> $DIR/type-checking-test-4.rs:17:13
+  --> $DIR/type-checking-test-4.rs:15:13
    |
 LL | fn test_wrong1<'a>(x: &dyn Foo<'static>, y: &'a u32) {
    |                -- lifetime `'a` defined here
 LL |     let _ = x as &dyn Bar<'static, 'a>; // Error
    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^ type annotation requires that `'a` must outlive `'static`
-   |
-   = help: consider replacing `'a` with `'static`
 
 error: lifetime may not live long enough
-  --> $DIR/type-checking-test-4.rs:22:13
+  --> $DIR/type-checking-test-4.rs:20:13
    |
 LL | fn test_wrong2<'a>(x: &dyn Foo<'static>, y: &'a u32) {
    |                -- lifetime `'a` defined here
 LL |     let _ = x as &dyn Bar<'a, 'static>; // Error
    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^ type annotation requires that `'a` must outlive `'static`
-   |
-   = help: consider replacing `'a` with `'static`
 
 error: lifetime may not live long enough
-  --> $DIR/type-checking-test-4.rs:29:5
+  --> $DIR/type-checking-test-4.rs:26:5
    |
 LL | fn test_wrong3<'a>(x: &dyn Foo<'a>) -> Option<&'static u32> {
    |                -- lifetime `'a` defined here
-...
+LL |     let y = x as &dyn Bar<'_, '_>;
 LL |     y.get_b() // ERROR
    |     ^^^^^^^^^ returning this value requires that `'a` must outlive `'static`
+
+error: lifetime may not live long enough
+  --> $DIR/type-checking-test-4.rs:31:5
+   |
+LL | fn test_wrong4<'a>(x: &dyn Foo<'a>) -> Option<&'static u32> {
+   |                -- lifetime `'a` defined here
+LL |     <_ as Bar>::get_b(x) // ERROR
+   |     ^^^^^^^^^^^^^^^^^^^^ returning this value requires that `'a` must outlive `'static`
+
+error: lifetime may not live long enough
+  --> $DIR/type-checking-test-4.rs:36:5
+   |
+LL | fn test_wrong5<'a>(x: &dyn Foo<'a>) -> Option<&'static u32> {
+   |                -- lifetime `'a` defined here
+LL |     <_ as Bar<'_, '_>>::get_b(x) // ERROR
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ returning this value requires that `'a` must outlive `'static`
+
+error: lifetime may not live long enough
+  --> $DIR/type-checking-test-4.rs:44:5
    |
-   = help: consider replacing `'a` with `'static`
+LL | fn test_wrong6<'a>(x: &dyn Foo<'a>) -> Option<&'static u32> {
+   |                -- lifetime `'a` defined here
+...
+LL |     z.get_b() // ERROR
+   |     ^^^^^^^^^ returning this value requires that `'a` must outlive `'static`
 
-error: aborting due to 3 previous errors
+error: aborting due to 6 previous errors
 
diff --git a/src/test/ui/traits/trait-upcasting/type-checking-test-4.rs b/src/test/ui/traits/trait-upcasting/type-checking-test-4.rs
index 70ccc87fc3e..f40c48f0d12 100644
--- a/src/test/ui/traits/trait-upcasting/type-checking-test-4.rs
+++ b/src/test/ui/traits/trait-upcasting/type-checking-test-4.rs
@@ -1,5 +1,4 @@
 #![feature(trait_upcasting)]
-#![allow(incomplete_features)]
 
 trait Foo<'a>: Bar<'a, 'a> {}
 trait Bar<'a, 'b> {
@@ -14,28 +13,28 @@ fn test_correct(x: &dyn Foo<'static>) {
 
 fn test_wrong1<'a>(x: &dyn Foo<'static>, y: &'a u32) {
     let _ = x as &dyn Bar<'static, 'a>; // Error
-    //~^ ERROR lifetime may not live long enough
+                                        //~^ ERROR lifetime may not live long enough
 }
 
 fn test_wrong2<'a>(x: &dyn Foo<'static>, y: &'a u32) {
     let _ = x as &dyn Bar<'a, 'static>; // Error
-    //~^ ERROR lifetime may not live long enough
+                                        //~^ ERROR lifetime may not live long enough
 }
 
 fn test_wrong3<'a>(x: &dyn Foo<'a>) -> Option<&'static u32> {
     let y = x as &dyn Bar<'_, '_>;
     y.get_b() // ERROR
-    //~^ ERROR lifetime may not live long enough
+              //~^ ERROR lifetime may not live long enough
 }
 
 fn test_wrong4<'a>(x: &dyn Foo<'a>) -> Option<&'static u32> {
     <_ as Bar>::get_b(x) // ERROR
-    //~^ ERROR lifetime may not live long enough
+                         //~^ ERROR lifetime may not live long enough
 }
 
 fn test_wrong5<'a>(x: &dyn Foo<'a>) -> Option<&'static u32> {
     <_ as Bar<'_, '_>>::get_b(x) // ERROR
-    //~^ ERROR lifetime may not live long enough
+                                 //~^ ERROR lifetime may not live long enough
 }
 
 fn test_wrong6<'a>(x: &dyn Foo<'a>) -> Option<&'static u32> {
@@ -43,7 +42,7 @@ fn test_wrong6<'a>(x: &dyn Foo<'a>) -> Option<&'static u32> {
     y.get_b(); // ERROR
     let z = y;
     z.get_b() // ERROR
-    //~^ ERROR lifetime may not live long enough
+              //~^ ERROR lifetime may not live long enough
 }
 
 fn main() {}
diff --git a/src/test/ui/traits/trait-upcasting/type-checking-test-4.stderr b/src/test/ui/traits/trait-upcasting/type-checking-test-4.stderr
index 436129d0bee..8d506e5807e 100644
--- a/src/test/ui/traits/trait-upcasting/type-checking-test-4.stderr
+++ b/src/test/ui/traits/trait-upcasting/type-checking-test-4.stderr
@@ -1,5 +1,5 @@
 error: lifetime may not live long enough
-  --> $DIR/type-checking-test-4.rs:16:13
+  --> $DIR/type-checking-test-4.rs:15:13
    |
 LL | fn test_wrong1<'a>(x: &dyn Foo<'static>, y: &'a u32) {
    |                -- lifetime `'a` defined here
@@ -7,7 +7,7 @@ LL |     let _ = x as &dyn Bar<'static, 'a>; // Error
    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^ type annotation requires that `'a` must outlive `'static`
 
 error: lifetime may not live long enough
-  --> $DIR/type-checking-test-4.rs:21:13
+  --> $DIR/type-checking-test-4.rs:20:13
    |
 LL | fn test_wrong2<'a>(x: &dyn Foo<'static>, y: &'a u32) {
    |                -- lifetime `'a` defined here
@@ -15,7 +15,7 @@ LL |     let _ = x as &dyn Bar<'a, 'static>; // Error
    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^ type annotation requires that `'a` must outlive `'static`
 
 error: lifetime may not live long enough
-  --> $DIR/type-checking-test-4.rs:27:5
+  --> $DIR/type-checking-test-4.rs:26:5
    |
 LL | fn test_wrong3<'a>(x: &dyn Foo<'a>) -> Option<&'static u32> {
    |                -- lifetime `'a` defined here
@@ -24,7 +24,7 @@ LL |     y.get_b() // ERROR
    |     ^^^^^^^^^ returning this value requires that `'a` must outlive `'static`
 
 error: lifetime may not live long enough
-  --> $DIR/type-checking-test-4.rs:32:5
+  --> $DIR/type-checking-test-4.rs:31:5
    |
 LL | fn test_wrong4<'a>(x: &dyn Foo<'a>) -> Option<&'static u32> {
    |                -- lifetime `'a` defined here
@@ -32,7 +32,7 @@ LL |     <_ as Bar>::get_b(x) // ERROR
    |     ^^^^^^^^^^^^^^^^^^^^ returning this value requires that `'a` must outlive `'static`
 
 error: lifetime may not live long enough
-  --> $DIR/type-checking-test-4.rs:37:5
+  --> $DIR/type-checking-test-4.rs:36:5
    |
 LL | fn test_wrong5<'a>(x: &dyn Foo<'a>) -> Option<&'static u32> {
    |                -- lifetime `'a` defined here
@@ -40,7 +40,7 @@ LL |     <_ as Bar<'_, '_>>::get_b(x) // ERROR
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ returning this value requires that `'a` must outlive `'static`
 
 error: lifetime may not live long enough
-  --> $DIR/type-checking-test-4.rs:45:5
+  --> $DIR/type-checking-test-4.rs:44:5
    |
 LL | fn test_wrong6<'a>(x: &dyn Foo<'a>) -> Option<&'static u32> {
    |                -- lifetime `'a` defined here