Error code E0226

More than one explicit lifetime bound was used on a trait object.

Example of erroneous code:

trait Foo {}

type T<'a, 'b> = dyn Foo + 'a + 'b; // error: Trait object `arg` has two
                                    //        lifetime bound, 'a and 'b.

Here T is a trait object with two explicit lifetime bounds, ’a and ’b.

Only a single explicit lifetime bound is permitted on trait objects. To fix this error, consider removing one of the lifetime bounds:

trait Foo {}

type T<'a> = dyn Foo + 'a;

Back to list of error codes