error[E0283]: type annotations needed --> $DIR/E0283.rs:30:21 | LL | let cont: u32 = Generator::create(); | ^^^^^^^^^^^^^^^^^ cannot infer type | = note: cannot satisfy `_: Generator` error[E0283]: type annotations needed --> $DIR/E0283.rs:35:24 | LL | let bar = foo_impl.into() * 1u32; | ---------^^^^-- | | | | | cannot infer type for type parameter `T` declared on the trait `Into` | this method call resolves to `T` | help: use the fully qualified path for the potential candidate: `>::into(foo_impl)` | note: multiple `impl`s satisfying `Impl: Into<_>` found --> $DIR/E0283.rs:17:1 | LL | impl Into for Impl { | ^^^^^^^^^^^^^^^^^^^^^^^ = note: and another `impl` found in the `core` crate: - impl Into for T where U: From; error: aborting due to 2 previous errors For more information about this error, try `rustc --explain E0283`.