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|
error: ambiguous `+` in a type
--> $DIR/trait-object-delimiters.rs:3:13
|
LL | fn foo1(_: &dyn Drop + AsRef<str>) {}
| ^^^^^^^^^^^^^^^^^^^^^ help: use parentheses to disambiguate: `(dyn Drop + AsRef<str>)`
error: incorrect braces around trait bounds
--> $DIR/trait-object-delimiters.rs:6:17
|
LL | fn foo2(_: &dyn (Drop + AsRef<str>)) {}
| ^ ^
|
help: remove the parentheses
|
LL - fn foo2(_: &dyn (Drop + AsRef<str>)) {}
LL + fn foo2(_: &dyn Drop + AsRef<str>) {}
|
error: expected parameter name, found `{`
--> $DIR/trait-object-delimiters.rs:8:17
|
LL | fn foo3(_: &dyn {Drop + AsRef<str>}) {}
| ^ expected parameter name
error: expected one of `!`, `(`, `)`, `,`, `?`, `for`, `~`, lifetime, or path, found `{`
--> $DIR/trait-object-delimiters.rs:8:17
|
LL | fn foo3(_: &dyn {Drop + AsRef<str>}) {}
| -^ expected one of 9 possible tokens
| |
| help: missing `,`
error: expected identifier, found `<`
--> $DIR/trait-object-delimiters.rs:12:17
|
LL | fn foo4(_: &dyn <Drop + AsRef<str>>) {}
| ^ expected identifier
error: invalid `dyn` keyword
--> $DIR/trait-object-delimiters.rs:14:25
|
LL | fn foo5(_: &(dyn Drop + dyn AsRef<str>)) {}
| ^^^ help: remove this keyword
|
= help: `dyn` is only needed at the start of a trait `+`-separated list
error[E0225]: only auto traits can be used as additional traits in a trait object
--> $DIR/trait-object-delimiters.rs:3:24
|
LL | fn foo1(_: &dyn Drop + AsRef<str>) {}
| ---- ^^^^^^^^^^ additional non-auto trait
| |
| first non-auto trait
|
= help: consider creating a new trait with all of these as supertraits and using that trait here instead: `trait NewTrait: Drop + AsRef<str> {}`
= note: auto-traits like `Send` and `Sync` are traits that have special properties; for more information on them, visit <https://doc.rust-lang.org/reference/special-types-and-traits.html#auto-traits>
error[E0224]: at least one trait is required for an object type
--> $DIR/trait-object-delimiters.rs:8:13
|
LL | fn foo3(_: &dyn {Drop + AsRef<str>}) {}
| ^^^
error[E0225]: only auto traits can be used as additional traits in a trait object
--> $DIR/trait-object-delimiters.rs:14:29
|
LL | fn foo5(_: &(dyn Drop + dyn AsRef<str>)) {}
| ---- ^^^^^^^^^^ additional non-auto trait
| |
| first non-auto trait
|
= help: consider creating a new trait with all of these as supertraits and using that trait here instead: `trait NewTrait: Drop + AsRef<str> {}`
= note: auto-traits like `Send` and `Sync` are traits that have special properties; for more information on them, visit <https://doc.rust-lang.org/reference/special-types-and-traits.html#auto-traits>
error: aborting due to 9 previous errors
Some errors have detailed explanations: E0224, E0225.
For more information about an error, try `rustc --explain E0224`.
|
