error[E0412]: cannot find type `T` in this scope --> $DIR/outlives-with-missing.rs:10:9 | LL | impl HandlerWrapper { | - similarly named type parameter `H` defined here ... LL | T: Send + Sync + 'static, | ^ help: a type parameter with a similar name exists: `H` error: aborting due to previous error For more information about this error, try `rustc --explain E0412`.