warning: thread support is experimental and incomplete: weak memory effects are not emulated. error: Undefined Behavior: Data race detected between Read on Thread(id = 1) and Write on Thread(id = 2) at ALLOC (current vector clock = VClock, conflicting timestamp = VClock) --> $DIR/read_write_race_stack.rs:LL:CC | LL | stack_var | ^^^^^^^^^ Data race detected between Read on Thread(id = 1) and Write on Thread(id = 2) at ALLOC (current vector clock = VClock, conflicting timestamp = VClock) | = 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/read_write_race_stack.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