error: unsupported operation: unknown `miri_resolve_frame` flags 2
  --> tests/fail/shims/backtrace/bad-backtrace-resolve-flags.rs:LL:CC
   |
LL |         miri_resolve_frame(buf[0], 2);
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unsupported operation occurred here
   |
   = help: this is likely not a bug in the program; it indicates that the program performed an operation that Miri does not support
   = note: BACKTRACE:
   = note: inside `main` at tests/fail/shims/backtrace/bad-backtrace-resolve-flags.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