error[E0283]: type annotations needed: cannot satisfy `Self: Gen<'source>` | note: multiple `impl`s or `where` clauses satisfying `Self: Gen<'source>` found --> $DIR/conflicting-bounds.rs:3:1 | LL | pub trait Gen<'source> { | ^^^^^^^^^^^^^^^^^^^^^^ ... LL | Self: for<'s> Gen<'s, Output = T>; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ error: aborting due to 1 previous error For more information about this error, try `rustc --explain E0283`.