error[E0505]: cannot move out of `x` because it is borrowed
  --> $DIR/borrow-tuple-fields.rs:12:13
   |
LL |     let x: (Box<_>, _) = (Box::new(1), 2);
   |         - binding `x` declared here
LL |     let r = &x.0;
   |             ---- borrow of `x.0` occurs here
LL |     let y = x;
   |             ^ move out of `x` occurs here
LL |
LL |     r.use_ref();
   |     - borrow later used here
   |
help: consider cloning the value if the performance cost is acceptable
   |
LL |     let r = &x.0.clone();
   |                 ++++++++

error[E0502]: cannot borrow `x.0` as mutable because it is also borrowed as immutable
  --> $DIR/borrow-tuple-fields.rs:18:13
   |
LL |     let a = &x.0;
   |             ---- immutable borrow occurs here
LL |     let b = &mut x.0;
   |             ^^^^^^^^ mutable borrow occurs here
LL |     a.use_ref();
   |     - immutable borrow later used here

error[E0499]: cannot borrow `x.0` as mutable more than once at a time
  --> $DIR/borrow-tuple-fields.rs:23:13
   |
LL |     let a = &mut x.0;
   |             -------- first mutable borrow occurs here
LL |     let b = &mut x.0;
   |             ^^^^^^^^ second mutable borrow occurs here
LL |     a.use_ref();
   |     - first borrow later used here

error[E0505]: cannot move out of `x` because it is borrowed
  --> $DIR/borrow-tuple-fields.rs:28:13
   |
LL |     let x = Foo(Box::new(1), 2);
   |         - binding `x` declared here
LL |     let r = &x.0;
   |             ---- borrow of `x.0` occurs here
LL |     let y = x;
   |             ^ move out of `x` occurs here
LL |     r.use_ref();
   |     - borrow later used here
   |
help: consider cloning the value if the performance cost is acceptable
   |
LL |     let r = &x.0.clone();
   |                 ++++++++

error[E0502]: cannot borrow `x.0` as mutable because it is also borrowed as immutable
  --> $DIR/borrow-tuple-fields.rs:33:13
   |
LL |     let a = &x.0;
   |             ---- immutable borrow occurs here
LL |     let b = &mut x.0;
   |             ^^^^^^^^ mutable borrow occurs here
LL |     a.use_ref();
   |     - immutable borrow later used here

error[E0499]: cannot borrow `x.0` as mutable more than once at a time
  --> $DIR/borrow-tuple-fields.rs:38:13
   |
LL |     let a = &mut x.0;
   |             -------- first mutable borrow occurs here
LL |     let b = &mut x.0;
   |             ^^^^^^^^ second mutable borrow occurs here
LL |     a.use_mut();
   |     - first borrow later used here

error: aborting due to 6 previous errors

Some errors have detailed explanations: E0499, E0502, E0505.
For more information about an error, try `rustc --explain E0499`.