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

   1 error[E0387]: cannot assign to data in a captured outer variable in an `Fn` closure
   2   --> $DIR/borrow-immutable-upvar-mutation.rs:25:27
   3    |
   4 LL |         let _f = to_fn(|| x = 42); //~ ERROR cannot assign
   5    |                           ^^^^^^
   6    |
   7 help: consider changing this closure to take self by mutable reference
   8   --> $DIR/borrow-immutable-upvar-mutation.rs:25:24
   9    |
  10 LL |         let _f = to_fn(|| x = 42); //~ ERROR cannot assign
  11    |                        ^^^^^^^^^
  12
  13 error[E0387]: cannot borrow data mutably in a captured outer variable in an `Fn` closure
  14   --> $DIR/borrow-immutable-upvar-mutation.rs:28:36
  15    |
  16 LL |         let _g = to_fn(|| set(&mut y)); //~ ERROR cannot borrow
  17    |                                    ^
  18    |
  19 help: consider changing this closure to take self by mutable reference
  20   --> $DIR/borrow-immutable-upvar-mutation.rs:28:24
  21    |
  22 LL |         let _g = to_fn(|| set(&mut y)); //~ ERROR cannot borrow
  23    |                        ^^^^^^^^^^^^^^
  24
  25 error[E0387]: cannot assign to data in a captured outer variable in an `Fn` closure
  26   --> $DIR/borrow-immutable-upvar-mutation.rs:31:55
  27    |
  28 LL |         let _h = to_fn_mut(|| { set(&mut z); to_fn(|| z = 42); }); //~ ERROR cannot assign
  29    |                                                       ^^^^^^
  30    |
  31 help: consider changing this closure to take self by mutable reference
  32   --> $DIR/borrow-immutable-upvar-mutation.rs:31:52
  33    |
  34 LL |         let _h = to_fn_mut(|| { set(&mut z); to_fn(|| z = 42); }); //~ ERROR cannot assign
  35    |                                                    ^^^^^^^^^
  36
  37 error[E0594]: cannot assign to captured outer variable in an `Fn` closure
  38   --> $DIR/borrow-immutable-upvar-mutation.rs:37:32
  39    |
  40 LL |         let _f = to_fn(move || x = 42); //~ ERROR cannot assign
  41    |                                ^^^^^^
  42    |
  43    = note: `Fn` closures cannot capture their enclosing environment for modifications
  44 help: consider changing this closure to take self by mutable reference
  45   --> $DIR/borrow-immutable-upvar-mutation.rs:37:24
  46    |
  47 LL |         let _f = to_fn(move || x = 42); //~ ERROR cannot assign
  48    |                        ^^^^^^^^^^^^^^
  49
  50 error[E0596]: cannot borrow captured outer variable in an `Fn` closure as mutable
  51   --> $DIR/borrow-immutable-upvar-mutation.rs:40:41
  52    |
  53 LL |         let _g = to_fn(move || set(&mut y)); //~ ERROR cannot borrow
  54    |                                         ^
  55    |
  56 help: consider changing this closure to take self by mutable reference
  57   --> $DIR/borrow-immutable-upvar-mutation.rs:40:24
  58    |
  59 LL |         let _g = to_fn(move || set(&mut y)); //~ ERROR cannot borrow
  60    |                        ^^^^^^^^^^^^^^^^^^^
  61
  62 error[E0594]: cannot assign to captured outer variable in an `Fn` closure
  63   --> $DIR/borrow-immutable-upvar-mutation.rs:43:65
  64    |
  65 LL |         let _h = to_fn_mut(move || { set(&mut z); to_fn(move || z = 42); }); //~ ERROR cannot assign
  66    |                                                                 ^^^^^^
  67    |
  68    = note: `Fn` closures cannot capture their enclosing environment for modifications
  69 help: consider changing this closure to take self by mutable reference
  70   --> $DIR/borrow-immutable-upvar-mutation.rs:43:57
  71    |
  72 LL |         let _h = to_fn_mut(move || { set(&mut z); to_fn(move || z = 42); }); //~ ERROR cannot assign
  73    |                                                         ^^^^^^^^^^^^^^
  74
  75 error: aborting due to 6 previous errors
  76
  77 Some errors occurred: E0387, E0594, E0596.
  78 For more information about an error, try `rustc --explain E0387`.