error: unsupported operation: can't call foreign function `__rust_alloc` on $OS
  --> tests/fail/alloc/no_global_allocator.rs:LL:CC
   |
LL |         __rust_alloc(1, 1);
   |         ^^^^^^^^^^^^^^^^^^ unsupported operation occurred here
   |
   = help: this means the program tried to do something Miri does not support; it does not indicate a bug in the program
   = note: BACKTRACE:
   = note: inside `miri_start` at tests/fail/alloc/no_global_allocator.rs:LL:CC

error: aborting due to 1 previous error