error[E0283]: type annotations needed
 --> tests/ui/msg_regular_syntax_for_request.rs:8:9
  |
8 |         SomeRequest => {}
  |         ^^^^^^^^^^^ cannot infer type
  |
note: multiple `impl`s satisfying `SomeRequest: MustBeRegularNotRequest<_, Envelope>` found
 --> tests/ui/msg_regular_syntax_for_request.rs:7:5
  |
7 | /     msg!(match envelope {
8 | |         SomeRequest => {}
9 | |     });
  | |______^
  = note: this error originates in the macro `msg` (in Nightly builds, run with -Z macro-backtrace for more info)