| Thread 1 starting, will block on mutex | |
| Thread 1 reported it has started | |
| thread '<unnamed>' panicked at $DIR/concurrent-panic.rs:LL:CC: | |
| panic in thread 2 | |
| note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace | |
| Thread 2 blocking on thread 1 | |
| Thread 2 reported it has started | |
| Unlocking mutex | |
| thread '<unnamed>' panicked at $DIR/concurrent-panic.rs:LL:CC: | |
| panic in thread 1 | |
| Thread 1 has exited | |
| Thread 2 has exited |