| thread 'main' panicked at $DIR/issue-87707.rs:14:24: | |
| Here Once instance is poisoned. | |
| note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace | |
| thread 'main' panicked at $DIR/issue-87707.rs:16:7: | |
| Once instance has previously been poisoned |