Deprecation warning despite @nowarn

[hnrklssn]

Compiler version

3.0.1-RC2

Minimized code

import scala.annotation.nowarn
trait A
case class Test(s: String) extends A
@nowarn def f(): String => A = Test

Output

[warn] -- Warning: Test.scala:4:31 ------
[warn] 4  |@nowarn def f(): String => A = Test
[warn]    |                               ^^^^
[warn]    |The method `apply` is inserted. The auto insertion will be deprecated, please write `Test.apply` explicitly.

Expectation

No warnings emitted originating in f().

[lrytz]

@nowarn support is in the works #12857

[dwijnand]

Duplicate of #8908