src/test/ui/borrowck/borrow-immutable-upvar-mutation.stderr

   1 error[E0594]: cannot assign to `x`, as it is a captured variable in a `Fn` closure
   2   --> $DIR/borrow-immutable-upvar-mutation.rs:15:27
   3    |
   4 LL |         let _f = to_fn(|| x = 42);
   5    |                           ^^^^^^ cannot assign
   6    |
   7 help: consider changing this to accept closures that implement `FnMut`
   8   --> $DIR/borrow-immutable-upvar-mutation.rs:15:24
   9    |
  10 LL |         let _f = to_fn(|| x = 42);
  11    |                        ^^^^^^^^^
  12
  13 error[E0596]: cannot borrow `y` as mutable, as it is a captured variable in a `Fn` closure
  14   --> $DIR/borrow-immutable-upvar-mutation.rs:18:31
  15    |
  16 LL |         let _g = to_fn(|| set(&mut y));
  17    |                               ^^^^^^ cannot borrow as mutable
  18    |
  19 help: consider changing this to accept closures that implement `FnMut`
  20   --> $DIR/borrow-immutable-upvar-mutation.rs:18:24
  21    |
  22 LL |         let _g = to_fn(|| set(&mut y));
  23    |                        ^^^^^^^^^^^^^^
  24
  25 error[E0594]: cannot assign to `z`, as it is a captured variable in a `Fn` closure
  26   --> $DIR/borrow-immutable-upvar-mutation.rs:21:55
  27    |
  28 LL |         let _h = to_fn_mut(|| { set(&mut z); to_fn(|| z = 42); });
  29    |                                                       ^^^^^^ cannot assign
  30    |
  31 help: consider changing this to accept closures that implement `FnMut`
  32   --> $DIR/borrow-immutable-upvar-mutation.rs:21:52
  33    |
  34 LL |         let _h = to_fn_mut(|| { set(&mut z); to_fn(|| z = 42); });
  35    |                                                    ^^^^^^^^^
  36
  37 error[E0594]: cannot assign to `x`, as it is a captured variable in a `Fn` closure
  38   --> $DIR/borrow-immutable-upvar-mutation.rs:27:32
  39    |
  40 LL |         let _f = to_fn(move || x = 42);
  41    |                                ^^^^^^ cannot assign
  42    |
  43 help: consider changing this to accept closures that implement `FnMut`
  44   --> $DIR/borrow-immutable-upvar-mutation.rs:27:24
  45    |
  46 LL |         let _f = to_fn(move || x = 42);
  47    |                        ^^^^^^^^^^^^^^
  48
  49 error[E0596]: cannot borrow `y` as mutable, as it is a captured variable in a `Fn` closure
  50   --> $DIR/borrow-immutable-upvar-mutation.rs:30:36
  51    |
  52 LL |         let _g = to_fn(move || set(&mut y));
  53    |                                    ^^^^^^ cannot borrow as mutable
  54    |
  55 help: consider changing this to accept closures that implement `FnMut`
  56   --> $DIR/borrow-immutable-upvar-mutation.rs:30:24
  57    |
  58 LL |         let _g = to_fn(move || set(&mut y));
  59    |                        ^^^^^^^^^^^^^^^^^^^
  60
  61 error[E0594]: cannot assign to `z`, as it is a captured variable in a `Fn` closure
  62   --> $DIR/borrow-immutable-upvar-mutation.rs:33:65
  63    |
  64 LL |         let _h = to_fn_mut(move || { set(&mut z); to_fn(move || z = 42); });
  65    |                                                                 ^^^^^^ cannot assign
  66    |
  67 help: consider changing this to accept closures that implement `FnMut`
  68   --> $DIR/borrow-immutable-upvar-mutation.rs:33:57
  69    |
  70 LL |         let _h = to_fn_mut(move || { set(&mut z); to_fn(move || z = 42); });
  71    |                                                         ^^^^^^^^^^^^^^
  72
  73 error: aborting due to 6 previous errors
  74
  75 Some errors have detailed explanations: E0594, E0596.
  76 For more information about an error, try `rustc --explain E0594`.