error[E0277]: the trait bound `usize: trait_bounds_on_structs_and_enums_xc::Trait` is not satisfied --> $DIR/trait-bounds-on-structs-and-enums-xc.rs:7:1 | LL | fn explode(x: Foo) {} | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `trait_bounds_on_structs_and_enums_xc::Trait` is not implemented for `usize` | = note: required by `trait_bounds_on_structs_and_enums_xc::Foo` error[E0277]: the trait bound `f32: trait_bounds_on_structs_and_enums_xc::Trait` is not satisfied --> $DIR/trait-bounds-on-structs-and-enums-xc.rs:10:1 | LL | fn kaboom(y: Bar) {} | ^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `trait_bounds_on_structs_and_enums_xc::Trait` is not implemented for `f32` | = note: required by `trait_bounds_on_structs_and_enums_xc::Bar` error: aborting due to 2 previous errors For more information about this error, try `rustc --explain E0277`.