error: expected expression, found keyword `impl`
  --> $DIR/feature-gate-impl_trait_in_bindings.rs:16:15
   |
LL |     let foo = impl Copy = 42;
   |               ^^^^ expected expression

error[E0562]: `impl Trait` not allowed outside of function and inherent method return types
  --> $DIR/feature-gate-impl_trait_in_bindings.rs:11:12
   |
LL | const FOO: impl Copy = 42;
   |            ^^^^^^^^^
   |
   = help: add #![feature(impl_trait_in_bindings)] to the crate attributes to enable

error[E0562]: `impl Trait` not allowed outside of function and inherent method return types
  --> $DIR/feature-gate-impl_trait_in_bindings.rs:13:13
   |
LL | static BAR: impl Copy = 42;
   |             ^^^^^^^^^
   |
   = help: add #![feature(impl_trait_in_bindings)] to the crate attributes to enable

error: aborting due to 3 previous errors

For more information about this error, try `rustc --explain E0562`.