error[E0117]: only traits defined in the current crate can be implemented for arbitrary types --> $DIR/const-and-non-const-impl.rs:5:1 | LL | impl const std::ops::Add for i32 { | ^^^^^^^^^^^-------------^^^^^--- | | | | | | | `i32` is not defined in the current crate | | `i32` is not defined in the current crate | impl doesn't use only types from inside the current crate | = note: define and implement a trait or new type instead error[E0119]: conflicting implementations of trait `std::ops::Add` for type `Int` --> $DIR/const-and-non-const-impl.rs:22:1 | LL | impl std::ops::Add for Int { | -------------------------- first implementation here ... LL | impl const std::ops::Add for Int { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ conflicting implementation for `Int` error[E0283]: type annotations needed --> $DIR/const-and-non-const-impl.rs:5:12 | LL | impl const std::ops::Add for i32 { | ^^^^^^^^^^^^^ cannot infer type for type `i32` | note: multiple `impl`s satisfying `i32: Add` found --> $DIR/const-and-non-const-impl.rs:5:1 | LL | impl const std::ops::Add for i32 { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ = note: and another `impl` found in the `core` crate: `impl Add for i32;` error[E0283]: type annotations needed --> $DIR/const-and-non-const-impl.rs:14:6 | LL | impl std::ops::Add for Int { | ^^^^^^^^^^^^^ cannot infer type for struct `Int` | note: multiple `impl`s satisfying `Int: Add` found --> $DIR/const-and-non-const-impl.rs:14:1 | LL | impl std::ops::Add for Int { | ^^^^^^^^^^^^^^^^^^^^^^^^^^ ... LL | impl const std::ops::Add for Int { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ error[E0283]: type annotations needed --> $DIR/const-and-non-const-impl.rs:22:12 | LL | impl const std::ops::Add for Int { | ^^^^^^^^^^^^^ cannot infer type for struct `Int` | note: multiple `impl`s satisfying `Int: Add` found --> $DIR/const-and-non-const-impl.rs:14:1 | LL | impl std::ops::Add for Int { | ^^^^^^^^^^^^^^^^^^^^^^^^^^ ... LL | impl const std::ops::Add for Int { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ error: aborting due to 5 previous errors Some errors have detailed explanations: E0117, E0119, E0283. For more information about an error, try `rustc --explain E0117`.