error[E0308]: mismatched types --> $DIR/issue-102892.rs:15:26 | LL | let (a, b): (A, B) = &**arc; // suggests putting `&**arc` here too | ------ ^^^^^^ expected `(A, B)`, found `&(A, B)` | | | expected due to this | = note: expected tuple `(A, B)` found reference `&(A, B)` help: consider removing the borrow | LL - let (a, b): (A, B) = &**arc; // suggests putting `&**arc` here too LL + let (a, b): (A, B) = **arc; // suggests putting `&**arc` here too | help: alternatively, consider changing the type annotation | LL | let (a, b): &(A, B) = &**arc; // suggests putting `&**arc` here too | + error[E0308]: mismatched types --> $DIR/issue-102892.rs:20:32 | LL | let (a, b): ((A, B), A) = (&mut *mutation, &(**arc).0); // suggests putting `&**arc` here too | ^^^^^^^^^^^^^^ expected `(A, B)`, found `&mut (A, B)` | = note: expected tuple `(A, B)` found mutable reference `&mut (A, B)` help: consider removing the borrow | LL - let (a, b): ((A, B), A) = (&mut *mutation, &(**arc).0); // suggests putting `&**arc` here too LL + let (a, b): ((A, B), A) = (*mutation, &(**arc).0); // suggests putting `&**arc` here too | help: alternatively, consider changing the type annotation | LL | let (a, b): (&mut (A, B), A) = (&mut *mutation, &(**arc).0); // suggests putting `&**arc` here too | ++++ error[E0308]: mismatched types --> $DIR/issue-102892.rs:20:48 | LL | let (a, b): ((A, B), A) = (&mut *mutation, &(**arc).0); // suggests putting `&**arc` here too | ^^^^^^^^^^ expected `A`, found `&A` | help: consider removing the borrow | LL - let (a, b): ((A, B), A) = (&mut *mutation, &(**arc).0); // suggests putting `&**arc` here too LL + let (a, b): ((A, B), A) = (&mut *mutation, (**arc).0); // suggests putting `&**arc` here too | help: alternatively, consider changing the type annotation | LL | let (a, b): ((A, B), &A) = (&mut *mutation, &(**arc).0); // suggests putting `&**arc` here too | + error: aborting due to 3 previous errors For more information about this error, try `rustc --explain E0308`.