remove useless #![deny]s

WaffleLapkin · WaffleLapkin · commit 08b4323bade0 · 2025-10-19T19:48:21.000+02:00
diff --git a/compiler/rustc_lint_defs/src/builtin.rs b/compiler/rustc_lint_defs/src/builtin.rs
@@ -4065,7 +4065,6 @@ declare_lint! {
     /// ### Example
     ///
     /// ```rust,compile_fail
-    /// #![deny(never_type_fallback_flowing_into_unsafe)]
     /// fn main() {
     ///     if true {
     ///         // return has type `!` which, is some cases, causes never type fallback
@@ -4122,7 +4121,7 @@ declare_lint! {
     /// ### Example
     ///
     /// ```rust,compile_fail,edition2021
-    /// #![deny(dependency_on_unit_never_type_fallback)]
+    /// # #![deny(dependency_on_unit_never_type_fallback)]
     /// fn main() {
     ///     if true {
     ///         // return has type `!` which, is some cases, causes never type fallback
diff --git a/tests/ui/never_type/dont-suggest-turbofish-from-expansion.rs b/tests/ui/never_type/dont-suggest-turbofish-from-expansion.rs
@@ -1,5 +1,3 @@
-#![deny(dependency_on_unit_never_type_fallback)]
-
 fn create_ok_default<C>() -> Result<C, ()>
 where
     C: Default,
diff --git a/tests/ui/never_type/dont-suggest-turbofish-from-expansion.stderr b/tests/ui/never_type/dont-suggest-turbofish-from-expansion.stderr
@@ -1,5 +1,5 @@
 error: this function depends on never type fallback being `()`
-  --> $DIR/dont-suggest-turbofish-from-expansion.rs:10:1
+  --> $DIR/dont-suggest-turbofish-from-expansion.rs:8:1
    |
 LL | fn main() -> Result<(), ()> {
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -8,15 +8,11 @@ LL | fn main() -> Result<(), ()> {
    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/never-type-fallback.html>
    = help: specify the types explicitly
 note: in edition 2024, the requirement `!: Default` will fail
-  --> $DIR/dont-suggest-turbofish-from-expansion.rs:14:23
+  --> $DIR/dont-suggest-turbofish-from-expansion.rs:12:23
    |
 LL |         let created = create_ok_default()?;
    |                       ^^^^^^^^^^^^^^^^^^^
-note: the lint level is defined here
-  --> $DIR/dont-suggest-turbofish-from-expansion.rs:1:9
-   |
-LL | #![deny(dependency_on_unit_never_type_fallback)]
-   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   = note: `#[deny(dependency_on_unit_never_type_fallback)]` (part of `#[deny(rust_2024_compatibility)]`) on by default
 help: use `()` annotations to avoid fallback changes
    |
 LL |         let created: () = create_ok_default()?;
@@ -26,7 +22,7 @@ error: aborting due to 1 previous error
 
 Future incompatibility report: Future breakage diagnostic:
 error: this function depends on never type fallback being `()`
-  --> $DIR/dont-suggest-turbofish-from-expansion.rs:10:1
+  --> $DIR/dont-suggest-turbofish-from-expansion.rs:8:1
    |
 LL | fn main() -> Result<(), ()> {
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -35,15 +31,11 @@ LL | fn main() -> Result<(), ()> {
    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/never-type-fallback.html>
    = help: specify the types explicitly
 note: in edition 2024, the requirement `!: Default` will fail
-  --> $DIR/dont-suggest-turbofish-from-expansion.rs:14:23
+  --> $DIR/dont-suggest-turbofish-from-expansion.rs:12:23
    |
 LL |         let created = create_ok_default()?;
    |                       ^^^^^^^^^^^^^^^^^^^
-note: the lint level is defined here
-  --> $DIR/dont-suggest-turbofish-from-expansion.rs:1:9
-   |
-LL | #![deny(dependency_on_unit_never_type_fallback)]
-   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   = note: `#[deny(dependency_on_unit_never_type_fallback)]` (part of `#[deny(rust_2024_compatibility)]`) on by default
 help: use `()` annotations to avoid fallback changes
    |
 LL |         let created: () = create_ok_default()?;
diff --git a/tests/ui/never_type/lint-breaking-2024-assign-underscore.fixed b/tests/ui/never_type/lint-breaking-2024-assign-underscore.fixed
@@ -1,7 +1,5 @@
 //@ run-rustfix
-
 #![allow(unused)]
-#![deny(dependency_on_unit_never_type_fallback)]
 
 fn foo<T: Default>() -> Result<T, ()> {
     Err(())
diff --git a/tests/ui/never_type/lint-breaking-2024-assign-underscore.rs b/tests/ui/never_type/lint-breaking-2024-assign-underscore.rs
@@ -1,7 +1,5 @@
 //@ run-rustfix
-
 #![allow(unused)]
-#![deny(dependency_on_unit_never_type_fallback)]
 
 fn foo<T: Default>() -> Result<T, ()> {
     Err(())
diff --git a/tests/ui/never_type/lint-breaking-2024-assign-underscore.stderr b/tests/ui/never_type/lint-breaking-2024-assign-underscore.stderr
@@ -1,5 +1,5 @@
 error: this function depends on never type fallback being `()`
-  --> $DIR/lint-breaking-2024-assign-underscore.rs:10:1
+  --> $DIR/lint-breaking-2024-assign-underscore.rs:8:1
    |
 LL | fn test() -> Result<(), ()> {
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -8,15 +8,11 @@ LL | fn test() -> Result<(), ()> {
    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/never-type-fallback.html>
    = help: specify the types explicitly
 note: in edition 2024, the requirement `!: Default` will fail
-  --> $DIR/lint-breaking-2024-assign-underscore.rs:13:9
+  --> $DIR/lint-breaking-2024-assign-underscore.rs:11:9
    |
 LL |     _ = foo()?;
    |         ^^^^^
-note: the lint level is defined here
-  --> $DIR/lint-breaking-2024-assign-underscore.rs:4:9
-   |
-LL | #![deny(dependency_on_unit_never_type_fallback)]
-   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   = note: `#[deny(dependency_on_unit_never_type_fallback)]` (part of `#[deny(rust_2024_compatibility)]`) on by default
 help: use `()` annotations to avoid fallback changes
    |
 LL |     _ = foo::<()>()?;
@@ -26,7 +22,7 @@ error: aborting due to 1 previous error
 
 Future incompatibility report: Future breakage diagnostic:
 error: this function depends on never type fallback being `()`
-  --> $DIR/lint-breaking-2024-assign-underscore.rs:10:1
+  --> $DIR/lint-breaking-2024-assign-underscore.rs:8:1
    |
 LL | fn test() -> Result<(), ()> {
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -35,15 +31,11 @@ LL | fn test() -> Result<(), ()> {
    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/never-type-fallback.html>
    = help: specify the types explicitly
 note: in edition 2024, the requirement `!: Default` will fail
-  --> $DIR/lint-breaking-2024-assign-underscore.rs:13:9
+  --> $DIR/lint-breaking-2024-assign-underscore.rs:11:9
    |
 LL |     _ = foo()?;
    |         ^^^^^
-note: the lint level is defined here
-  --> $DIR/lint-breaking-2024-assign-underscore.rs:4:9
-   |
-LL | #![deny(dependency_on_unit_never_type_fallback)]
-   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   = note: `#[deny(dependency_on_unit_never_type_fallback)]` (part of `#[deny(rust_2024_compatibility)]`) on by default
 help: use `()` annotations to avoid fallback changes
    |
 LL |     _ = foo::<()>()?;

Original file line number	Diff line number	Diff line change
`@@ -1,5 +1,3 @@`
`1`		`-#![deny(dependency_on_unit_never_type_fallback)]`
`2`		`-`
`3`	`1`	`fn create_ok_default<C>() -> Result<C, ()>`
`4`	`2`	`where`
`5`	`3`	`C: Default,`