Auto merge of #134842 - jieyouxu:disable-flaky-test, r=ibraheemdev

Disable `backtrace-debuginfo.rs` on windows-gnu

This test appears still flaky cf. #117097 on `i686-mingw` as observed in #131244 (comment).

r? compiler (or anyone, really)

Author: bors

Diff for: tests/ui/runtime/backtrace-debuginfo.rs

@@ -13,6 +13,10 @@
 //@ ignore-sgx no processes
 //@ ignore-fuchsia Backtrace not symbolized, trace different line alignment
 
+// FIXME(#117097): backtrace (possibly unwinding mechanism) seems to be different on at least
+// `i686-mingw` (32-bit windows-gnu)? cc #128911.
+//@ ignore-windows-gnu
+
 use std::env;
 
 #[path = "backtrace-debuginfo-aux.rs"] mod aux;