message: Rustup to rustc 1.31.0-nightly (cae6efc37 2018-10-27)
diff: @@ -36,16 +36,10 @@ pub fn trans_mono_item<'a, 'tcx: 'a>(
  .unwrap();
  String::from_utf8(mir.into_inner()).unwrap()
  }
  - InstanceDef::Item(_)
  - | InstanceDef::DropGlue(_, _)
  - | InstanceDef::Virtual(_, _)
  - | InstanceDef::FnPtrShim(_, _)
  - | InstanceDef::ClosureOnceShim { .. }
  - | InstanceDef::CloneShim(_, _) => {
  + _ => {
  // FIXME fix write_mir_pretty for these instances
  format!("{:#?}", tcx.instance_mir(inst.def))
  }
  - InstanceDef::Intrinsic(_) => bug!("tried to codegen intrinsic"),
  }
  });
  