error[E0277]: the trait bound `Tuple: From` is not satisfied --> $DIR/suggest_tuple_wrap_root_obligation.rs:22:24 | LL | convert_into_tuple(42_u8); | ------------------ ^^^^^ the trait `From` is not implemented for `Tuple` | | | required by a bound introduced by this call | = help: the following other types implement trait `From`: `Tuple` implements `From<(u8, u8)>` `Tuple` implements `From<(u8, u8, u8)>` `Tuple` implements `From<(u8,)>` = note: required for `u8` to implement `Into` note: required by a bound in `convert_into_tuple` --> $DIR/suggest_tuple_wrap_root_obligation.rs:19:32 | LL | fn convert_into_tuple(_x: impl Into) {} | ^^^^^^^^^^^ required by this bound in `convert_into_tuple` help: use a unary tuple instead | LL | convert_into_tuple((42_u8,)); | + ++ error: aborting due to 1 previous error For more information about this error, try `rustc --explain E0277`.