error: unsupported operation: can't call foreign function: foo
  --> $DIR/unsupported_foreign_function.rs:LL:CC
   |
LL |         foo();
   |         ^^^^^ can't call foreign function: foo
   |
   = help: this is likely not a bug in the program; it indicates that the program performed an operation that the interpreter does not support
   = note: BACKTRACE:
   = note: inside `main` at $DIR/unsupported_foreign_function.rs:LL:CC

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

error: aborting due to previous error