Small fixes for non-fully-parallel sweep #9583

Job	Run time
cargo test	50s
cargo clippy	26s
make (check, --enable-yjit=dev, --yjit-call-threshold=1 --yjit-verify-ctx --yjit-code-gc, -T --yj...	5m 58s
make (test-bundled-gems, --enable-yjit=dev)	24m 36s
make (check, --enable-yjit=dev)	5m 31s
make (check, RUSTC='rustc +1.58.0', 1.58.0)	4m 51s
make (yjit-bindgen, To fix: use patch in logs, --with-gcc=clang-14 --enable-yjit=dev --enable-zji...	5m 12s
YJIT Ubuntu result	3s
	47m 27s

Provide feedback