Rust errors / Types and traits
Rust compiler error · checked with rustc 1.99.0
Rust error E0405: cannot find trait `SomeTrait` in this scope
What it meansThe code refers to a trait that is not in scope.
What rustc prints
error[E0405]: cannot find trait `SomeTrait` in this scope
--> main.rs:3:6
|
3 | impl SomeTrait for Foo {} // error: trait `SomeTrait` is not in scope
| ^^^^^^^^^ not found in this scopeReal output of rustc 1.99.0 compiling the official example below (2021 edition). Your names and line numbers will differ; the first line is the part to match.
E0405Types and traits
Activein rustc 1.99.0
8related errors linked below
The compiler team's explanation
The code refers to a trait that is not in scope.
Erroneous code example:
struct Foo;
impl SomeTrait for Foo {} // error: trait `SomeTrait` is not in scopePlease verify that the name of the trait wasn't misspelled and ensure that it was imported. Example:
// solution 1:
use some_file::SomeTrait;
// solution 2:
trait SomeTrait {
// some functions
}
struct Foo;
impl SomeTrait for Foo { // ok!
// implements functions
}From rustc --explain E0405 (1.99.0), part of the Rust project, MIT or Apache-2.0. Official page.
Related errors
- E0308mismatched types
- E0277the trait bound is not satisfied
- E0599no method named X found in the current scope
- E0433failed to resolve
- E0403the name `T` is already used for a generic parameter in this item's generic parameters
- E0404expected trait, found struct `Foo`
- E0407method `b` is not a member of trait `Foo`
- E0408variable `y` is not bound in all patterns
Up next
Often hit nextE0308: mismatched typesA related error from the same family.Read it next →Did this answer your question?