warning: thread support is experimental: the scheduler is not preemptive, and can get stuck in spin loops. (see https://github.com/rust-lang/miri/issues/1388) error: Undefined Behavior: unlocked a default mutex that was not locked by the current thread --> $DIR/libc_pthread_mutex_wrong_owner.rs:LL:CC | LL | ...t_eq!(libc::pthread_mutex_unlock(lock_copy.0.get() as *mut _), 0); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unlocked a default mutex that was not locked by the current thread | = help: this indicates a bug in the program: it performed an invalid operation, and caused Undefined Behavior = help: see https://doc.rust-lang.org/nightly/reference/behavior-considered-undefined.html for further information = note: inside closure at $DIR/libc_pthread_mutex_wrong_owner.rs:LL:CC note: some details are omitted, run with `MIRIFLAGS=-Zmiri-backtrace=full` for a verbose backtrace error: aborting due to previous error; 1 warning emitted