warning: MIR pass `ThisPass` is unknown and will be ignored

warning: MIR pass `DoesNotExist` is unknown and will be ignored

warning: MIR pass `ThisPass` is unknown and will be ignored
   |
   = note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no`

warning: MIR pass `DoesNotExist` is unknown and will be ignored
   |
   = note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no`

warning: 4 warnings emitted