Fix flaky GNUStep test for now

And make it more visible in the future

Author: madsmtm

.github/workflows/ci.yml

@@ -545,6 +545,8 @@ jobs:
     - lint
 
     strategy:
+      # GNUStep tests are currently flaky, this makes it easier to see
+      fail-fast: false
       matrix:
         include:
         - name: Test GNUStep with libobjc2 v1.9

crates/icrate/tests/mutable_array.rs

@@ -158,6 +158,10 @@ fn test_remove() {
 
 #[test]
 #[cfg(feature = "Foundation_NSString")]
+#[cfg_attr(
+    feature = "gnustep-1-7",
+    ignore = "thread safety issues regarding initialization"
+)]
 fn test_into_vec() {
     let array = NSMutableArray::from_id_slice(&[Foundation::NSString::new()]);