fn mutex_get_kind<'mir, 'tcx: 'mir>(
ecx: &MiriEvalContext<'mir, 'tcx>,
mutex_op: &OpTy<'tcx, Provenance>
) -> InterpResult<'tcx, Scalar<Provenance>>
fn mutex_get_kind<'mir, 'tcx: 'mir>(
ecx: &MiriEvalContext<'mir, 'tcx>,
mutex_op: &OpTy<'tcx, Provenance>
) -> InterpResult<'tcx, Scalar<Provenance>>