error[E0275]: overflow evaluating the requirement `<() as Foo>::Item: Copy` --> $DIR/alias-bound-unsound.rs:18:17 | LL | type Item = String where String: Copy; | ^^^^^^ | = help: consider increasing the recursion limit by adding a `#![recursion_limit = "256"]` attribute to your crate (`alias_bound_unsound`) note: required by a bound in `Foo::Item` --> $DIR/alias-bound-unsound.rs:8:16 | LL | type Item: Copy | ^^^^ required by this bound in `Foo::Item` error[E0275]: overflow evaluating the requirement `String <: <() as Foo>::Item` --> $DIR/alias-bound-unsound.rs:24:31 | LL | drop(<() as Foo>::copy_me(&x)); | ^^ | = help: consider increasing the recursion limit by adding a `#![recursion_limit = "256"]` attribute to your crate (`alias_bound_unsound`) error[E0275]: overflow evaluating the requirement `<() as Foo>::Item == _` --> $DIR/alias-bound-unsound.rs:24:10 | LL | drop(<() as Foo>::copy_me(&x)); | ^^^^^^^^^^^^^^^^^^^^^^^^ | = help: consider increasing the recursion limit by adding a `#![recursion_limit = "256"]` attribute to your crate (`alias_bound_unsound`) error[E0275]: overflow evaluating the requirement `<() as Foo>::Item: Sized` --> $DIR/alias-bound-unsound.rs:24:10 | LL | drop(<() as Foo>::copy_me(&x)); | ^^^^^^^^^^^^^^^^^^^^ | = help: consider increasing the recursion limit by adding a `#![recursion_limit = "256"]` attribute to your crate (`alias_bound_unsound`) = note: the return type of a function must have a statically known size error[E0275]: overflow evaluating the requirement `&<() as Foo>::Item well-formed` --> $DIR/alias-bound-unsound.rs:24:31 | LL | drop(<() as Foo>::copy_me(&x)); | ^^ | = help: consider increasing the recursion limit by adding a `#![recursion_limit = "256"]` attribute to your crate (`alias_bound_unsound`) error[E0275]: overflow evaluating the requirement `<() as Foo>::Item well-formed` --> $DIR/alias-bound-unsound.rs:24:10 | LL | drop(<() as Foo>::copy_me(&x)); | ^^^^^^^^^^^^^^^^^^^^^^^^ | = help: consider increasing the recursion limit by adding a `#![recursion_limit = "256"]` attribute to your crate (`alias_bound_unsound`) error[E0275]: overflow evaluating the requirement `<() as Foo>::Item normalizes-to _` --> $DIR/alias-bound-unsound.rs:24:10 | LL | drop(<() as Foo>::copy_me(&x)); | ^^^^^^^^^^^^^^^^^^^^^^^^ | = help: consider increasing the recursion limit by adding a `#![recursion_limit = "256"]` attribute to your crate (`alias_bound_unsound`) error: aborting due to 7 previous errors For more information about this error, try `rustc --explain E0275`.