thread 'main' panicked at $DIR/short-ice-remove-middle-frames.rs:52:5:
debug!!!
stack backtrace:
   0: std::panicking::begin_panic
   1: short_ice_remove_middle_frames::seven
   2: short_ice_remove_middle_frames::sixth
   3: short_ice_remove_middle_frames::fifth::{{closure}}
      [... omitted 4 frames ...]
   4: short_ice_remove_middle_frames::second
   5: short_ice_remove_middle_frames::first::{{closure}}
   6: short_ice_remove_middle_frames::first
   7: short_ice_remove_middle_frames::main
   8: core::ops::function::FnOnce::call_once
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.