The key for trait errors is https://docs.rs/axum-macros/latest/axum_macros/attr.debug_handler.html https://docs.rs/axum-macros/latest/axum_macros/attr.debug_ha.

The key for trait errors is https://docs.rs/axum-macros/latest/axum_macros/attr.debug_handler.html https://docs.rs/axum-macros/latest/axum_macros/attr.debug_ha... -- it's made solving my problems much easier.