trace!("Running RemoveUnneededDrops on {:?}", body.source);
let did = body.source.def_id();
- let param_env = tcx.param_env(did);
+ let param_env = tcx.param_env_reveal_all_normalized(did);
let mut should_simplify = false;
let (basic_blocks, local_decls) = body.basic_blocks_and_local_decls_mut();