Disable failing rand tests on FreeBSD

Author: bjorn3

.cirrus.yml

@@ -16,4 +16,5 @@ task:
     # Disabling incr comp reduces cache size and incr comp doesn't save as much
     # on CI anyway.
     - export CARGO_BUILD_INCREMENTAL=false
-    - ./y.sh test
+    # Skip rand as it fails on FreeBSD due to rust-random/rand#1355
+    - ./y.sh test --skip-test test.rust-random/rand