error[E0599]: no associated item named `HOST_SIZE` found for struct `Foo` in the current scope --> $DIR/too_generic_eval_ice.rs:7:19 | LL | pub struct Foo(A, B); | --------------------------- associated item `HOST_SIZE` not found for this ... LL | [5; Self::HOST_SIZE] == [6; 0] | ^^^^^^^^^ associated item not found in `Foo` | = note: the method `HOST_SIZE` exists but the following trait bounds were not satisfied: `A : std::marker::Sized` `B : std::marker::Sized` error[E0277]: the size for values of type `A` cannot be known at compilation time --> $DIR/too_generic_eval_ice.rs:7:13 | LL | pub struct Foo(A, B); | --------------------------- required by `Foo` LL | LL | impl Foo { | - this type parameter needs to be `std::marker::Sized` ... LL | [5; Self::HOST_SIZE] == [6; 0] | ^^^^^^^^^^^^^^^ doesn't have a size known at compile-time | = help: the trait `std::marker::Sized` is not implemented for `A` = note: to learn more, visit error[E0277]: the size for values of type `B` cannot be known at compilation time --> $DIR/too_generic_eval_ice.rs:7:13 | LL | pub struct Foo(A, B); | --------------------------- required by `Foo` LL | LL | impl Foo { | - this type parameter needs to be `std::marker::Sized` ... LL | [5; Self::HOST_SIZE] == [6; 0] | ^^^^^^^^^^^^^^^ doesn't have a size known at compile-time | = help: the trait `std::marker::Sized` is not implemented for `B` = note: to learn more, visit error: aborting due to 3 previous errors Some errors have detailed explanations: E0277, E0599. For more information about an error, try `rustc --explain E0277`.