error[E0121]: the type placeholder `_` is not allowed within types on item signatures
  --> $DIR/typeck_type_placeholder_item_help.rs:4:15
   |
LL | fn test1() -> _ { Some(42) }
   |               ^
   |               |
   |               not allowed in type signatures
   |               help: replace with the correct return type: `std::option::Option<i32>`

error[E0121]: the type placeholder `_` is not allowed within types on item signatures
  --> $DIR/typeck_type_placeholder_item_help.rs:7:14
   |
LL | const TEST2: _ = 42u32;
   |              ^
   |              |
   |              not allowed in type signatures
   |              help: replace `_` with the correct type: `u32`

error[E0121]: the type placeholder `_` is not allowed within types on item signatures
  --> $DIR/typeck_type_placeholder_item_help.rs:10:14
   |
LL | const TEST3: _ = Some(42);
   |              ^
   |              |
   |              not allowed in type signatures
   |              help: replace `_` with the correct type: `std::option::Option<i32>`

error[E0121]: the type placeholder `_` is not allowed within types on item signatures
  --> $DIR/typeck_type_placeholder_item_help.rs:14:18
   |
LL |     const TEST4: _ = 42;
   |                  ^
   |                  |
   |                  not allowed in type signatures
   |                  help: replace `_` with the correct type: `i32`

error[E0121]: the type placeholder `_` is not allowed within types on item signatures
  --> $DIR/typeck_type_placeholder_item_help.rs:21:18
   |
LL |     const TEST5: _ = 13;
   |                  ^
   |                  |
   |                  not allowed in type signatures
   |                  help: replace `_` with the correct type: `i32`

error: aborting due to 5 previous errors

For more information about this error, try `rustc --explain E0121`.