An associated type was implemented when another trait item was expected. Erroneous code example:
struct Bar; trait Foo { const N : u32; } impl Foo for Bar { type N = u32; // error: item `N` is an associated type, which doesn't match its // trait `<Bar as Foo>` }
Please verify that the associated type name wasn't misspelled and your implementation corresponds to the trait definition. Example:
struct Bar; trait Foo { type N; } impl Foo for Bar { type N = u32; // ok! }
Or:
struct Bar; trait Foo { const N : u32; } impl Foo for Bar { const N : u32 = 0; // ok! }