error: Undefined Behavior: incorrect number of fixed arguments for variadic function `open`: got 1, expected 2
  --> tests/fail/shims/wrong_fixed_arg_count.rs:LL:CC
   |
LL |         open(c_path.as_ptr(), /* value does not matter */ 0)
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Undefined Behavior occurred here
   |
   = 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: BACKTRACE:
   = note: inside `main` at tests/fail/shims/wrong_fixed_arg_count.rs:LL:CC

note: some details are omitted, run with `MIRIFLAGS=-Zmiri-backtrace=full` for a verbose backtrace

error: aborting due to 1 previous error