error[E0433]: failed to resolve: use of undeclared crate or module `dyn` --> $DIR/dyn-trait-compatibility.rs:3:11 | LL | type A1 = dyn::dyn; | ^^^ use of undeclared crate or module `dyn` error[E0412]: cannot find type `dyn` in this scope --> $DIR/dyn-trait-compatibility.rs:1:11 | LL | type A0 = dyn; | ^^^ not found in this scope error[E0412]: cannot find type `dyn` in this scope --> $DIR/dyn-trait-compatibility.rs:5:11 | LL | type A2 = dyn; | ^^^ not found in this scope error[E0412]: cannot find type `dyn` in this scope --> $DIR/dyn-trait-compatibility.rs:5:15 | LL | type A2 = dyn; | ^^^ not found in this scope error[E0412]: cannot find type `dyn` in this scope --> $DIR/dyn-trait-compatibility.rs:5:20 | LL | type A2 = dyn; | ^^^ not found in this scope error[E0412]: cannot find type `dyn` in this scope --> $DIR/dyn-trait-compatibility.rs:9:11 | LL | type A3 = dyn<::dyn>; | ^^^ not found in this scope error[E0405]: cannot find trait `dyn` in this scope --> $DIR/dyn-trait-compatibility.rs:9:23 | LL | type A3 = dyn<::dyn>; | ^^^ not found in this scope error[E0412]: cannot find type `dyn` in this scope --> $DIR/dyn-trait-compatibility.rs:9:16 | LL | type A3 = dyn<::dyn>; | ^^^ not found in this scope error: aborting due to 8 previous errors Some errors have detailed explanations: E0405, E0412, E0433. For more information about an error, try `rustc --explain E0405`.