Adjust lowering of Tuple/TupleStruct patterns. - Make sure we ban duplicate '..'. - Avoid ICEs on PatKind::Rest that doesn't generate HIR nodes.
Adjust lowering of Tuple/TupleStruct patterns.
- Make sure we ban duplicate '..'.
- Avoid ICEs on PatKind::Rest that doesn't generate HIR nodes.

aidancully/rust,graydon/rust,graydon/rust,graydon/rust,graydon/rust,aidancully/rust,aidancully/rust,graydon/rust,aidancully/rust,aidancully/rust,aidancully/rust,graydon/rust