[rustc.git] / tests / ui / typeck / typeck_type_placeholder_item.stderr

error: expected identifier, found reserved identifier `_`
  --> $DIR/typeck_type_placeholder_item.rs:154:18
   |
LL | struct BadStruct<_>(_);
   |                  ^ expected identifier, found reserved identifier

error: expected identifier, found reserved identifier `_`
  --> $DIR/typeck_type_placeholder_item.rs:157:16
   |
LL | trait BadTrait<_> {}
   |                ^ expected identifier, found reserved identifier

error: expected identifier, found reserved identifier `_`
  --> $DIR/typeck_type_placeholder_item.rs:167:19
   |
LL | struct BadStruct1<_, _>(_);
   |                   ^ expected identifier, found reserved identifier

error: expected identifier, found reserved identifier `_`
  --> $DIR/typeck_type_placeholder_item.rs:167:22
   |
LL | struct BadStruct1<_, _>(_);
   |                      ^ expected identifier, found reserved identifier

error: expected identifier, found reserved identifier `_`
  --> $DIR/typeck_type_placeholder_item.rs:172:19
   |
LL | struct BadStruct2<_, T>(_, T);
   |                   ^ expected identifier, found reserved identifier

error: associated constant in `impl` without body
  --> $DIR/typeck_type_placeholder_item.rs:205:5
   |
LL |     const C: _;
   |     ^^^^^^^^^^-
   |               |
   |               help: provide a definition for the constant: `= <expr>;`

error[E0403]: the name `_` is already used for a generic parameter in this item's generic parameters
  --> $DIR/typeck_type_placeholder_item.rs:167:22
   |
LL | struct BadStruct1<_, _>(_);
   |                   -  ^ already used
   |                   |
   |                   first use of `_`

error[E0121]: the placeholder `_` is not allowed within types on item signatures for return types
  --> $DIR/typeck_type_placeholder_item.rs:7:14
   |
LL | fn test() -> _ { 5 }
   |              ^
   |              |
   |              not allowed in type signatures
   |              help: replace with the correct return type: `i32`

error[E0121]: the placeholder `_` is not allowed within types on item signatures for return types
  --> $DIR/typeck_type_placeholder_item.rs:10:16
   |
LL | fn test2() -> (_, _) { (5, 5) }
   |               -^--^-
   |               ||  |
   |               ||  not allowed in type signatures
   |               |not allowed in type signatures
   |               help: replace with the correct return type: `(i32, i32)`

error[E0121]: the placeholder `_` is not allowed within types on item signatures for static variables
  --> $DIR/typeck_type_placeholder_item.rs:13:15
   |
LL | static TEST3: _ = "test";
   |               ^
   |               |
   |               not allowed in type signatures
   |               help: replace with the correct type: `&str`

error[E0121]: the placeholder `_` is not allowed within types on item signatures for static variables
  --> $DIR/typeck_type_placeholder_item.rs:16:15
   |
LL | static TEST4: _ = 145;
   |               ^
   |               |
   |               not allowed in type signatures
   |               help: replace with the correct type: `i32`

error[E0121]: the placeholder `_` is not allowed within types on item signatures for static variables
  --> $DIR/typeck_type_placeholder_item.rs:19:15
   |
LL | static TEST5: (_, _) = (1, 2);
   |               ^^^^^^ not allowed in type signatures

error[E0121]: the placeholder `_` is not allowed within types on item signatures for functions
  --> $DIR/typeck_type_placeholder_item.rs:22:13
   |
LL | fn test6(_: _) { }
   |             ^ not allowed in type signatures
   |
help: use type parameters instead
   |
LL | fn test6<T>(_: T) { }
   |         +++    ~

error[E0121]: the placeholder `_` is not allowed within types on item signatures for functions
  --> $DIR/typeck_type_placeholder_item.rs:25:18
   |
LL | fn test6_b<T>(_: _, _: T) { }
   |                  ^ not allowed in type signatures
   |
help: use type parameters instead
   |
LL | fn test6_b<T, U>(_: U, _: T) { }
   |             +++     ~

error[E0121]: the placeholder `_` is not allowed within types on item signatures for functions
  --> $DIR/typeck_type_placeholder_item.rs:28:30
   |
LL | fn test6_c<T, K, L, A, B>(_: _, _: (T, K, L, A, B)) { }
   |                              ^ not allowed in type signatures
   |
help: use type parameters instead
   |
LL | fn test6_c<T, K, L, A, B, U>(_: U, _: (T, K, L, A, B)) { }
   |                         +++     ~

error[E0121]: the placeholder `_` is not allowed within types on item signatures for functions
  --> $DIR/typeck_type_placeholder_item.rs:31:13
   |
LL | fn test7(x: _) { let _x: usize = x; }
   |             ^ not allowed in type signatures
   |
help: use type parameters instead
   |
LL | fn test7<T>(x: T) { let _x: usize = x; }
   |         +++    ~

error[E0121]: the placeholder `_` is not allowed within types on item signatures for functions
  --> $DIR/typeck_type_placeholder_item.rs:34:22
   |
LL | fn test8(_f: fn() -> _) { }
   |                      ^
   |                      |
   |                      not allowed in type signatures
   |                      help: use type parameters instead: `T`

error[E0121]: the placeholder `_` is not allowed within types on item signatures for functions
  --> $DIR/typeck_type_placeholder_item.rs:34:22
   |
LL | fn test8(_f: fn() -> _) { }
   |                      ^ not allowed in type signatures
   |
help: use type parameters instead
   |
LL | fn test8<T>(_f: fn() -> T) { }
   |         +++             ~

error[E0121]: the placeholder `_` is not allowed within types on item signatures for return types
  --> $DIR/typeck_type_placeholder_item.rs:48:26
   |
LL | fn test11(x: &usize) -> &_ {
   |                         -^
   |                         ||
   |                         |not allowed in type signatures
   |                         help: replace with the correct return type: `&'static &'static usize`

error[E0121]: the placeholder `_` is not allowed within types on item signatures for return types
  --> $DIR/typeck_type_placeholder_item.rs:53:52
   |
LL | unsafe fn test12(x: *const usize) -> *const *const _ {
   |                                      --------------^
   |                                      |             |
   |                                      |             not allowed in type signatures
   |                                      help: replace with the correct return type: `*const *const usize`

error[E0121]: the placeholder `_` is not allowed within types on item signatures for structs
  --> $DIR/typeck_type_placeholder_item.rs:67:8
   |
LL |     a: _,
   |        ^ not allowed in type signatures
LL |
LL |     b: (_, _),
   |         ^  ^ not allowed in type signatures
   |         |
   |         not allowed in type signatures
   |
help: use type parameters instead
   |
LL ~ struct Test10<T> {
LL ~     a: T,
LL |
LL ~     b: (T, T),
   |

error: missing type for `static` item
  --> $DIR/typeck_type_placeholder_item.rs:73:13
   |
LL |     static A = 42;
   |             ^ help: provide a type for the static variable: `: i32`

error[E0121]: the placeholder `_` is not allowed within types on item signatures for static variables
  --> $DIR/typeck_type_placeholder_item.rs:75:15
   |
LL |     static B: _ = 42;
   |               ^
   |               |
   |               not allowed in type signatures
   |               help: replace with the correct type: `i32`

error[E0121]: the placeholder `_` is not allowed within types on item signatures for static variables
  --> $DIR/typeck_type_placeholder_item.rs:77:15
   |
LL |     static C: Option<_> = Some(42);
   |               ^^^^^^^^^ not allowed in type signatures

error[E0121]: the placeholder `_` is not allowed within types on item signatures for return types
  --> $DIR/typeck_type_placeholder_item.rs:79:21
   |
LL |     fn fn_test() -> _ { 5 }
   |                     ^
   |                     |
   |                     not allowed in type signatures
   |                     help: replace with the correct return type: `i32`

error[E0121]: the placeholder `_` is not allowed within types on item signatures for return types
  --> $DIR/typeck_type_placeholder_item.rs:82:23
   |
LL |     fn fn_test2() -> (_, _) { (5, 5) }
   |                      -^--^-
   |                      ||  |
   |                      ||  not allowed in type signatures
   |                      |not allowed in type signatures
   |                      help: replace with the correct return type: `(i32, i32)`

error[E0121]: the placeholder `_` is not allowed within types on item signatures for static variables
  --> $DIR/typeck_type_placeholder_item.rs:85:22
   |
LL |     static FN_TEST3: _ = "test";
   |                      ^
   |                      |
   |                      not allowed in type signatures
   |                      help: replace with the correct type: `&str`

error[E0121]: the placeholder `_` is not allowed within types on item signatures for static variables
  --> $DIR/typeck_type_placeholder_item.rs:88:22
   |
LL |     static FN_TEST4: _ = 145;
   |                      ^
   |                      |
   |                      not allowed in type signatures
   |                      help: replace with the correct type: `i32`

error[E0121]: the placeholder `_` is not allowed within types on item signatures for static variables
  --> $DIR/typeck_type_placeholder_item.rs:91:22
   |
LL |     static FN_TEST5: (_, _) = (1, 2);
   |                      ^^^^^^ not allowed in type signatures

error[E0121]: the placeholder `_` is not allowed within types on item signatures for functions
  --> $DIR/typeck_type_placeholder_item.rs:94:20
   |
LL |     fn fn_test6(_: _) { }
   |                    ^ not allowed in type signatures
   |
help: use type parameters instead
   |
LL |     fn fn_test6<T>(_: T) { }
   |                +++    ~

error[E0121]: the placeholder `_` is not allowed within types on item signatures for functions
  --> $DIR/typeck_type_placeholder_item.rs:97:20
   |
LL |     fn fn_test7(x: _) { let _x: usize = x; }
   |                    ^ not allowed in type signatures
   |
help: use type parameters instead
   |
LL |     fn fn_test7<T>(x: T) { let _x: usize = x; }
   |                +++    ~

error[E0121]: the placeholder `_` is not allowed within types on item signatures for functions
  --> $DIR/typeck_type_placeholder_item.rs:100:29
   |
LL |     fn fn_test8(_f: fn() -> _) { }
   |                             ^
   |                             |
   |                             not allowed in type signatures
   |                             help: use type parameters instead: `T`

error[E0121]: the placeholder `_` is not allowed within types on item signatures for functions
  --> $DIR/typeck_type_placeholder_item.rs:100:29
   |
LL |     fn fn_test8(_f: fn() -> _) { }
   |                             ^ not allowed in type signatures
   |
help: use type parameters instead
   |
LL |     fn fn_test8<T>(_f: fn() -> T) { }
   |                +++             ~

error[E0121]: the placeholder `_` is not allowed within types on item signatures for structs
  --> $DIR/typeck_type_placeholder_item.rs:123:12
   |
LL |         a: _,
   |            ^ not allowed in type signatures
LL |
LL |         b: (_, _),
   |             ^  ^ not allowed in type signatures
   |             |
   |             not allowed in type signatures
   |
help: use type parameters instead
   |
LL ~     struct FnTest10<T> {
LL ~         a: T,
LL |
LL ~         b: (T, T),
   |

error[E0282]: type annotations needed
  --> $DIR/typeck_type_placeholder_item.rs:128:18
   |
LL |     fn fn_test11(_: _) -> (_, _) { panic!() }
   |                  ^ cannot infer type

error[E0121]: the placeholder `_` is not allowed within types on item signatures for return types
  --> $DIR/typeck_type_placeholder_item.rs:128:28
   |
LL |     fn fn_test11(_: _) -> (_, _) { panic!() }
   |                            ^  ^ not allowed in type signatures
   |                            |
   |                            not allowed in type signatures

error[E0121]: the placeholder `_` is not allowed within types on item signatures for return types
  --> $DIR/typeck_type_placeholder_item.rs:132:30
   |
LL |     fn fn_test12(x: i32) -> (_, _) { (x, x) }
   |                             -^--^-
   |                             ||  |
   |                             ||  not allowed in type signatures
   |                             |not allowed in type signatures
   |                             help: replace with the correct return type: `(i32, i32)`

error[E0121]: the placeholder `_` is not allowed within types on item signatures for return types
  --> $DIR/typeck_type_placeholder_item.rs:135:33
   |
LL |     fn fn_test13(x: _) -> (i32, _) { (x, x) }
   |                           ------^-
   |                           |     |
   |                           |     not allowed in type signatures
   |                           help: replace with the correct return type: `(i32, i32)`

error[E0121]: the placeholder `_` is not allowed within types on item signatures for structs
  --> $DIR/typeck_type_placeholder_item.rs:154:21
   |
LL | struct BadStruct<_>(_);
   |                     ^ not allowed in type signatures
   |
help: use type parameters instead
   |
LL | struct BadStruct<T>(T);
   |                  ~  ~

error[E0121]: the placeholder `_` is not allowed within types on item signatures for implementations
  --> $DIR/typeck_type_placeholder_item.rs:159:15
   |
LL | impl BadTrait<_> for BadStruct<_> {}
   |               ^                ^ not allowed in type signatures
   |               |
   |               not allowed in type signatures
   |
help: use type parameters instead
   |
LL | impl<T> BadTrait<T> for BadStruct<T> {}
   |     +++          ~                ~

error[E0121]: the placeholder `_` is not allowed within types on item signatures for opaque types
  --> $DIR/typeck_type_placeholder_item.rs:162:34
   |
LL | fn impl_trait() -> impl BadTrait<_> {
   |                                  ^ not allowed in type signatures

error[E0121]: the placeholder `_` is not allowed within types on item signatures for structs
  --> $DIR/typeck_type_placeholder_item.rs:167:25
   |
LL | struct BadStruct1<_, _>(_);
   |                         ^ not allowed in type signatures
   |
help: use type parameters instead
   |
LL | struct BadStruct1<T, _>(T);
   |                   ~     ~

error[E0121]: the placeholder `_` is not allowed within types on item signatures for structs
  --> $DIR/typeck_type_placeholder_item.rs:172:25
   |
LL | struct BadStruct2<_, T>(_, T);
   |                         ^ not allowed in type signatures
   |
help: use type parameters instead
   |
LL | struct BadStruct2<U, T>(U, T);
   |                   ~     ~

error[E0121]: the placeholder `_` is not allowed within types on item signatures for type aliases
  --> $DIR/typeck_type_placeholder_item.rs:176:14
   |
LL | type X = Box<_>;
   |              ^ not allowed in type signatures

error[E0121]: the placeholder `_` is not allowed within types on item signatures for opaque types
  --> $DIR/typeck_type_placeholder_item.rs:182:21
   |
LL | type Y = impl Trait<_>;
   |                     ^ not allowed in type signatures

error[E0121]: the placeholder `_` is not allowed within types on item signatures for return types
  --> $DIR/typeck_type_placeholder_item.rs:216:31
   |
LL | fn value() -> Option<&'static _> {
   |               ----------------^-
   |               |               |
   |               |               not allowed in type signatures
   |               help: replace with the correct return type: `Option<&'static u8>`

error[E0121]: the placeholder `_` is not allowed within types on item signatures for constants
  --> $DIR/typeck_type_placeholder_item.rs:221:10
   |
LL | const _: Option<_> = map(value);
   |          ^^^^^^^^^
   |          |
   |          not allowed in type signatures
   |          help: replace with the correct type: `Option<u8>`

error[E0121]: the placeholder `_` is not allowed within types on item signatures for return types
  --> $DIR/typeck_type_placeholder_item.rs:224:31
   |
LL | fn evens_squared(n: usize) -> _ {
   |                               ^
   |                               |
   |                               not allowed in type signatures
   |                               help: replace with an appropriate return type: `impl Iterator<Item = usize>`

error[E0277]: the trait bound `std::ops::Range<{integer}>: Iterator` is not satisfied
  --> $DIR/typeck_type_placeholder_item.rs:229:22
   |
LL | const _: _ = (1..10).filter(|x| x % 2 == 0).map(|x| x * x);
   |                      ^^^^^^ `std::ops::Range<{integer}>` is not an iterator
   |
   = help: the trait `~const Iterator` is not implemented for `std::ops::Range<{integer}>`
note: the trait `Iterator` is implemented for `std::ops::Range<{integer}>`, but that implementation is not `const`
  --> $DIR/typeck_type_placeholder_item.rs:229:14
   |
LL | const _: _ = (1..10).filter(|x| x % 2 == 0).map(|x| x * x);
   |              ^^^^^^^

error[E0277]: the trait bound `Filter<std::ops::Range<{integer}>, [closure@$DIR/typeck_type_placeholder_item.rs:229:29: 229:32]>: Iterator` is not satisfied
  --> $DIR/typeck_type_placeholder_item.rs:229:45
   |
LL | const _: _ = (1..10).filter(|x| x % 2 == 0).map(|x| x * x);
   |                                             ^^^ `Filter<std::ops::Range<{integer}>, [closure@$DIR/typeck_type_placeholder_item.rs:229:29: 229:32]>` is not an iterator
   |
   = help: the trait `~const Iterator` is not implemented for `Filter<std::ops::Range<{integer}>, [closure@$DIR/typeck_type_placeholder_item.rs:229:29: 229:32]>`
note: the trait `Iterator` is implemented for `Filter<std::ops::Range<{integer}>, [closure@$DIR/typeck_type_placeholder_item.rs:229:29: 229:32]>`, but that implementation is not `const`
  --> $DIR/typeck_type_placeholder_item.rs:229:14
   |
LL | const _: _ = (1..10).filter(|x| x % 2 == 0).map(|x| x * x);
   |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error[E0121]: the placeholder `_` is not allowed within types on item signatures for constants
  --> $DIR/typeck_type_placeholder_item.rs:229:10
   |
LL | const _: _ = (1..10).filter(|x| x % 2 == 0).map(|x| x * x);
   |          ^ not allowed in type signatures

error[E0121]: the placeholder `_` is not allowed within types on item signatures for functions
  --> $DIR/typeck_type_placeholder_item.rs:140:31
   |
LL |     fn method_test1(&self, x: _);
   |                               ^ not allowed in type signatures
   |
help: use type parameters instead
   |
LL |     fn method_test1<T>(&self, x: T);
   |                    +++           ~

error[E0121]: the placeholder `_` is not allowed within types on item signatures for functions
  --> $DIR/typeck_type_placeholder_item.rs:142:31
   |
LL |     fn method_test2(&self, x: _) -> _;
   |                               ^     ^ not allowed in type signatures
   |                               |
   |                               not allowed in type signatures
   |
help: use type parameters instead
   |
LL |     fn method_test2<T>(&self, x: T) -> T;
   |                    +++           ~     ~

error[E0121]: the placeholder `_` is not allowed within types on item signatures for functions
  --> $DIR/typeck_type_placeholder_item.rs:144:31
   |
LL |     fn method_test3(&self) -> _;
   |                               ^ not allowed in type signatures
   |
help: use type parameters instead
   |
LL |     fn method_test3<T>(&self) -> T;
   |                    +++           ~

error[E0121]: the placeholder `_` is not allowed within types on item signatures for functions
  --> $DIR/typeck_type_placeholder_item.rs:146:26
   |
LL |     fn assoc_fn_test1(x: _);
   |                          ^ not allowed in type signatures
   |
help: use type parameters instead
   |
LL |     fn assoc_fn_test1<T>(x: T);
   |                      +++    ~

error[E0121]: the placeholder `_` is not allowed within types on item signatures for functions
  --> $DIR/typeck_type_placeholder_item.rs:148:26
   |
LL |     fn assoc_fn_test2(x: _) -> _;
   |                          ^     ^ not allowed in type signatures
   |                          |
   |                          not allowed in type signatures
   |
help: use type parameters instead
   |
LL |     fn assoc_fn_test2<T>(x: T) -> T;
   |                      +++    ~     ~

error[E0121]: the placeholder `_` is not allowed within types on item signatures for functions
  --> $DIR/typeck_type_placeholder_item.rs:150:28
   |
LL |     fn assoc_fn_test3() -> _;
   |                            ^ not allowed in type signatures
   |
help: use type parameters instead
   |
LL |     fn assoc_fn_test3<T>() -> T;
   |                      +++      ~

error[E0121]: the placeholder `_` is not allowed within types on item signatures for associated types
  --> $DIR/typeck_type_placeholder_item.rs:190:14
   |
LL |     type B = _;
   |              ^ not allowed in type signatures

error[E0121]: the placeholder `_` is not allowed within types on item signatures for constants
  --> $DIR/typeck_type_placeholder_item.rs:192:14
   |
LL |     const C: _;
   |              ^ not allowed in type signatures

error[E0121]: the placeholder `_` is not allowed within types on item signatures for constants
  --> $DIR/typeck_type_placeholder_item.rs:194:14
   |
LL |     const D: _ = 42;
   |              ^
   |              |
   |              not allowed in type signatures
   |              help: replace with the correct type: `i32`

error[E0121]: the placeholder `_` is not allowed within types on item signatures for associated types
  --> $DIR/typeck_type_placeholder_item.rs:197:26
   |
LL |     type F: std::ops::Fn(_);
   |                          ^ not allowed in type signatures

error[E0121]: the placeholder `_` is not allowed within types on item signatures for return types
  --> $DIR/typeck_type_placeholder_item.rs:41:24
   |
LL |     fn test9(&self) -> _ { () }
   |                        ^
   |                        |
   |                        not allowed in type signatures
   |                        help: replace with the correct return type: `()`

error[E0121]: the placeholder `_` is not allowed within types on item signatures for functions
  --> $DIR/typeck_type_placeholder_item.rs:44:27
   |
LL |     fn test10(&self, _x : _) { }
   |                           ^ not allowed in type signatures
   |
help: use type parameters instead
   |
LL |     fn test10<T>(&self, _x : T) { }
   |              +++             ~

error[E0121]: the placeholder `_` is not allowed within types on item signatures for functions
  --> $DIR/typeck_type_placeholder_item.rs:59:24
   |
LL |     fn clone(&self) -> _ { Test9 }
   |                        ^ not allowed in type signatures
   |
help: try replacing `_` with the type in the corresponding trait method signature
   |
LL |     fn clone(&self) -> Test9 { Test9 }
   |                        ~~~~~

error[E0121]: the placeholder `_` is not allowed within types on item signatures for functions
  --> $DIR/typeck_type_placeholder_item.rs:62:37
   |
LL |     fn clone_from(&mut self, other: _) { *self = Test9; }
   |                                     ^ not allowed in type signatures
   |
help: try replacing `_` with the type in the corresponding trait method signature
   |
LL |     fn clone_from(&mut self, other: &Test9) { *self = Test9; }
   |                                     ~~~~~~

error[E0121]: the placeholder `_` is not allowed within types on item signatures for return types
  --> $DIR/typeck_type_placeholder_item.rs:107:31
   |
LL |         fn fn_test9(&self) -> _ { () }
   |                               ^
   |                               |
   |                               not allowed in type signatures
   |                               help: replace with the correct return type: `()`

error[E0121]: the placeholder `_` is not allowed within types on item signatures for functions
  --> $DIR/typeck_type_placeholder_item.rs:110:34
   |
LL |         fn fn_test10(&self, _x : _) { }
   |                                  ^ not allowed in type signatures
   |
help: use type parameters instead
   |
LL |         fn fn_test10<T>(&self, _x : T) { }
   |                     +++             ~

error[E0121]: the placeholder `_` is not allowed within types on item signatures for functions
  --> $DIR/typeck_type_placeholder_item.rs:115:28
   |
LL |         fn clone(&self) -> _ { FnTest9 }
   |                            ^ not allowed in type signatures
   |
help: try replacing `_` with the type in the corresponding trait method signature
   |
LL |         fn clone(&self) -> FnTest9 { FnTest9 }
   |                            ~~~~~~~

error[E0121]: the placeholder `_` is not allowed within types on item signatures for functions
  --> $DIR/typeck_type_placeholder_item.rs:118:41
   |
LL |         fn clone_from(&mut self, other: _) { *self = FnTest9; }
   |                                         ^ not allowed in type signatures
   |
help: try replacing `_` with the type in the corresponding trait method signature
   |
LL |         fn clone_from(&mut self, other: &FnTest9) { *self = FnTest9; }
   |                                         ~~~~~~~~

error[E0121]: the placeholder `_` is not allowed within types on item signatures for associated types
  --> $DIR/typeck_type_placeholder_item.rs:201:14
   |
LL |     type A = _;
   |              ^ not allowed in type signatures

error[E0121]: the placeholder `_` is not allowed within types on item signatures for associated types
  --> $DIR/typeck_type_placeholder_item.rs:203:14
   |
LL |     type B = _;
   |              ^ not allowed in type signatures

error[E0121]: the placeholder `_` is not allowed within types on item signatures for constants
  --> $DIR/typeck_type_placeholder_item.rs:205:14
   |
LL |     const C: _;
   |              ^ not allowed in type signatures

error[E0121]: the placeholder `_` is not allowed within types on item signatures for constants
  --> $DIR/typeck_type_placeholder_item.rs:208:14
   |
LL |     const D: _ = 42;
   |              ^
   |              |
   |              not allowed in type signatures
   |              help: replace with the correct type: `i32`

error: aborting due to 73 previous errors

Some errors have detailed explanations: E0121, E0277, E0282, E0403.
For more information about an error, try `rustc --explain E0121`.