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error[E0369]: binary operation `+` cannot be applied to type `&str`
--> $DIR/issue-39018.rs:12:13
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LL | let x = "Hello " + "World!";
| ^^^^^^^^^^^^^^^^^^^ `+` can't be used to concatenate two `&str` strings
help: `to_owned()` can be used to create an owned `String` from a string reference. String concatenation appends the string on the right to the string on the left and may require reallocation. This requires ownership of the string on the left
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LL | let x = "Hello ".to_owned() + "World!";
| ^^^^^^^^^^^^^^^^^^^
error[E0369]: binary operation `+` cannot be applied to type `World`
--> $DIR/issue-39018.rs:18:13
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LL | let y = World::Hello + World::Goodbye;
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
= note: an implementation of `std::ops::Add` might be missing for `World`
error[E0369]: binary operation `+` cannot be applied to type `&str`
--> $DIR/issue-39018.rs:21:13
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LL | let x = "Hello " + "World!".to_owned();
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `+` can't be used to concatenate a `&str` with a `String`
help: `to_owned()` can be used to create an owned `String` from a string reference. String concatenation appends the string on the right to the string on the left and may require reallocation. This requires ownership of the string on the left
|
LL | let x = "Hello ".to_owned() + "World!".to_owned();
| ^^^^^^^^^^^^^^^^^^^
help: you also need to borrow the `String` on the right to get a `&str`
|
LL | let x = "Hello " + &"World!".to_owned();
| ^^^^^^^^^^^^^^^^^^^^
error: aborting due to 3 previous errors
For more information about this error, try `rustc --explain E0369`.
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