error[E0624]: method `bus` is private
  --> tests/trybuild/fail/setup_cannot_use_raw_bus.rs:20:24
   |
20 |         let _raw = ctx.bus();
   |                        ^^^ private method
   |
  ::: src/participant/context.rs
   |
   |     pub(crate) fn bus(&self) -> &Bus {
   |     -------------------------------- private method defined here
