1 warning: thread support is experimental: the scheduler is not preemptive, and can get stuck in spin loops.
2 (see https://github.com/rust-lang/miri/issues/1388)
4 error: unsupported operation: racy imperfectly overlapping atomic access is not possible in the C++20 memory model, and not supported by Miri's weak memory emulation
5 --> $DIR/racing_mixed_size_read.rs:LL:CC
7 LL | std::intrinsics::atomic_load_relaxed(hi);
8 | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ racy imperfectly overlapping atomic access is not possible in the C++20 memory model, and not supported by Miri's weak memory emulation
10 = help: this is likely not a bug in the program; it indicates that the program performed an operation that the interpreter does not support
12 = note: inside closure at $DIR/racing_mixed_size_read.rs:LL:CC
14 note: some details are omitted, run with `MIRIFLAGS=-Zmiri-backtrace=full` for a verbose backtrace
16 error: aborting due to previous error; 1 warning emitted