Rollup merge of #65438 - Centril:almost, r=varkor

Organize `never_type`  tests

Extracted from #65355.
This just moves some tests around to make things better categorized.

r? @varkor

Author: tmandry

src/test/ui/coercion/coerce-issue-49593-box-never.rs

@@ -1,4 +1,4 @@
-// build-pass (FIXME(62277): could be check-pass?)
+// check-pass
 
 #![feature(never_type)]
 #![allow(unreachable_code)]

src/test/ui/feature-gates/feature-gate-exhaustive-patterns.rs

@@ -1,4 +1,5 @@
 #![feature(never_type)]
+
 fn foo() -> Result<u32, !> {
     Ok(123)
 }

src/test/ui/feature-gates/feature-gate-exhaustive-patterns.stderr

@@ -1,5 +1,5 @@
 error[E0005]: refutable pattern in local binding: `Err(_)` not covered
-  --> $DIR/feature-gate-exhaustive-patterns.rs:7:9
+  --> $DIR/feature-gate-exhaustive-patterns.rs:8:9
    |
 LL |     let Ok(_x) = foo();
    |         ^^^^^^ pattern `Err(_)` not covered

src/test/ui/for-loop-while/loop-break-value.rs

@@ -1,4 +1,5 @@
 // run-pass
+
 #![allow(unreachable_code)]
 #![feature(never_type)]
 

src/test/ui/lint/must_use-unit.rs

@@ -1,5 +1,4 @@
 #![feature(never_type)]
-
 #![deny(unused_must_use)]
 
 #[must_use]

src/test/ui/lint/must_use-unit.stderr

@@ -1,17 +1,17 @@
 error: unused return value of `foo` that must be used
-  --> $DIR/must_use-unit.rs:14:5
+  --> $DIR/must_use-unit.rs:13:5
    |
 LL |     foo();
    |     ^^^^^^
    |
 note: lint level defined here
-  --> $DIR/must_use-unit.rs:3:9
+  --> $DIR/must_use-unit.rs:2:9
    |
 LL | #![deny(unused_must_use)]
    |         ^^^^^^^^^^^^^^^
 
 error: unused return value of `bar` that must be used
-  --> $DIR/must_use-unit.rs:16:5
+  --> $DIR/must_use-unit.rs:15:5
    |
 LL |     bar();
    |     ^^^^^^

src/test/run-fail/adjust_never.rs renamed to src/test/ui/never_type/adjust_never.rs

@@ -1,5 +1,6 @@
 // Test that a variable of type ! can coerce to another type.
 
+// run-fail
 // error-pattern:explicit
 
 #![feature(never_type)]

src/test/ui/call-fn-never-arg-wrong-type.rs renamed to src/test/ui/never_type/call-fn-never-arg-wrong-type.rs

@@ -1,5 +1,6 @@
 // Test that we can use a ! for an argument of type !
 
+// run-fail
 // error-pattern:wowzers!
 
 #![feature(never_type)]