[EXPERIMENTAL] when does want-abort-got-unwind.rs emit different errors?

Author: jieyouxu

tests/ui/panic-runtime/want-abort-got-unwind.rs

@@ -1,6 +1,5 @@
 // ignore-tidy-linelength
 //@ build-fail
-//@ dont-require-annotations: ERROR
 //@ dont-check-compiler-stderr
 //@ aux-build:panic-runtime-unwind.rs
 //@ compile-flags:-C panic=abort
@@ -10,7 +9,5 @@ extern crate panic_runtime_unwind;
 fn main() {}
 
 //~? ERROR the linked panic runtime `panic_runtime_unwind` is not compiled with this crate's panic strategy `abort`
-// FIXME: These errors are target-dependent, could be served by some "optional error" annotation
-// instead of `dont-require-annotations`.
-//FIXME~? ERROR cannot link together two panic runtimes: panic_unwind and panic_runtime_unwind
-//FIXME~? ERROR the crate `panic_unwind` requires panic strategy `unwind` which is incompatible with this crate's strategy of `abort`
+//~? ERROR cannot link together two panic runtimes: panic_unwind and panic_runtime_unwind
+//~? ERROR the crate `panic_unwind` requires panic strategy `unwind` which is incompatible with this crate's strategy of `abort`