src/test/ui/suggestions/lifetimes/missing-lifetimes-in-signature.stderr

   1 error[E0261]: use of undeclared lifetime name `'a`
   2   --> $DIR/missing-lifetimes-in-signature.rs:37:11
   3    |
   4 LL | fn baz<G: 'a, T>(g: G, dest: &mut T) -> impl FnOnce() + '_
   5    |        -  ^^ undeclared lifetime
   6    |        |
   7    |        help: consider introducing lifetime `'a` here: `'a,`
   8
   9 error[E0700]: hidden type for `impl FnOnce()` captures lifetime that does not appear in bounds
  10   --> $DIR/missing-lifetimes-in-signature.rs:19:5
  11    |
  12 LL |   fn foo<G, T>(g: G, dest: &mut T) -> impl FnOnce()
  13    |                            ------ hidden type `[closure@$DIR/missing-lifetimes-in-signature.rs:19:5: 19:12]` captures the anonymous lifetime defined here
  14 ...
  15 LL | /     move || {
  16 LL | |
  17 LL | |         *dest = g.get();
  18 LL | |     }
  19    | |_____^
  20    |
  21 help: to declare that the `impl Trait` captures `'_`, you can add an explicit `'_` lifetime bound
  22    |
  23 LL | fn foo<G, T>(g: G, dest: &mut T) -> impl FnOnce() + '_
  24    |                                                   ++++
  25
  26 error[E0311]: the parameter type `G` may not live long enough
  27   --> $DIR/missing-lifetimes-in-signature.rs:30:5
  28    |
  29 LL | /     move || {
  30 LL | |
  31 LL | |         *dest = g.get();
  32 LL | |     }
  33    | |_____^
  34    |
  35 note: the parameter type `G` must be valid for the anonymous lifetime defined here...
  36   --> $DIR/missing-lifetimes-in-signature.rs:26:26
  37    |
  38 LL | fn bar<G, T>(g: G, dest: &mut T) -> impl FnOnce() + '_
  39    |                          ^^^^^^
  40 note: ...so that the type `G` will meet its required lifetime bounds
  41   --> $DIR/missing-lifetimes-in-signature.rs:30:5
  42    |
  43 LL | /     move || {
  44 LL | |
  45 LL | |         *dest = g.get();
  46 LL | |     }
  47    | |_____^
  48 help: consider adding an explicit lifetime bound...
  49    |
  50 LL ~ fn bar<'a, G, T>(g: G, dest: &mut T) -> impl FnOnce() + '_
  51 LL | where
  52 LL ~     G: Get<T> + 'a,
  53    |
  54
  55 error[E0311]: the parameter type `G` may not live long enough
  56   --> $DIR/missing-lifetimes-in-signature.rs:52:5
  57    |
  58 LL | /     move || {
  59 LL | |
  60 LL | |         *dest = g.get();
  61 LL | |     }
  62    | |_____^
  63    |
  64 note: the parameter type `G` must be valid for the anonymous lifetime defined here...
  65   --> $DIR/missing-lifetimes-in-signature.rs:48:34
  66    |
  67 LL | fn qux<'a, G: 'a, T>(g: G, dest: &mut T) -> impl FnOnce() + '_
  68    |                                  ^^^^^^
  69 note: ...so that the type `G` will meet its required lifetime bounds
  70   --> $DIR/missing-lifetimes-in-signature.rs:52:5
  71    |
  72 LL | /     move || {
  73 LL | |
  74 LL | |         *dest = g.get();
  75 LL | |     }
  76    | |_____^
  77 help: consider adding an explicit lifetime bound...
  78    |
  79 LL | fn qux<'b, 'a, G: 'a + 'b, T>(g: G, dest: &mut T) -> impl FnOnce() + '_
  80    |        +++           ++++
  81
  82 error[E0311]: the parameter type `G` may not live long enough
  83   --> $DIR/missing-lifetimes-in-signature.rs:61:9
  84    |
  85 LL | /         move || {
  86 LL | |
  87 LL | |             *dest = g.get();
  88 LL | |         }
  89    | |_________^
  90    |
  91 note: the parameter type `G` must be valid for the anonymous lifetime defined here...
  92   --> $DIR/missing-lifetimes-in-signature.rs:60:47
  93    |
  94 LL |     fn qux<'b, G: Get<T> + 'b, T>(g: G, dest: &mut T) -> impl FnOnce() + '_ {
  95    |                                               ^^^^^^
  96 note: ...so that the type `G` will meet its required lifetime bounds
  97   --> $DIR/missing-lifetimes-in-signature.rs:61:9
  98    |
  99 LL | /         move || {
 100 LL | |
 101 LL | |             *dest = g.get();
 102 LL | |         }
 103    | |_________^
 104 help: consider adding an explicit lifetime bound...
 105    |
 106 LL |     fn qux<'c, 'b, G: Get<T> + 'b + 'c, T>(g: G, dest: &mut T) -> impl FnOnce() + '_ {
 107    |            +++                    ++++
 108
 109 error[E0311]: the parameter type `G` may not live long enough
 110   --> $DIR/missing-lifetimes-in-signature.rs:73:5
 111    |
 112 LL | /     move || {
 113 LL | |
 114 LL | |
 115 LL | |         *dest = g.get();
 116 LL | |     }
 117    | |_____^
 118    |
 119 note: the parameter type `G` must be valid for the anonymous lifetime defined here...
 120   --> $DIR/missing-lifetimes-in-signature.rs:69:34
 121    |
 122 LL | fn bat<'a, G: 'a, T>(g: G, dest: &mut T) -> impl FnOnce() + '_ + 'a
 123    |                                  ^^^^^^
 124 note: ...so that the type `G` will meet its required lifetime bounds
 125   --> $DIR/missing-lifetimes-in-signature.rs:73:5
 126    |
 127 LL | /     move || {
 128 LL | |
 129 LL | |
 130 LL | |         *dest = g.get();
 131 LL | |     }
 132    | |_____^
 133 help: consider adding an explicit lifetime bound...
 134    |
 135 LL | fn bat<'b, 'a, G: 'a + 'b, T>(g: G, dest: &mut T) -> impl FnOnce() + '_ + 'a
 136    |        +++           ++++
 137
 138 error[E0621]: explicit lifetime required in the type of `dest`
 139   --> $DIR/missing-lifetimes-in-signature.rs:73:5
 140    |
 141 LL |   fn bat<'a, G: 'a, T>(g: G, dest: &mut T) -> impl FnOnce() + '_ + 'a
 142    |                                    ------ help: add explicit lifetime `'a` to the type of `dest`: `&'a mut T`
 143 ...
 144 LL | /     move || {
 145 LL | |
 146 LL | |
 147 LL | |         *dest = g.get();
 148 LL | |     }
 149    | |_____^ lifetime `'a` required
 150
 151 error[E0309]: the parameter type `G` may not live long enough
 152   --> $DIR/missing-lifetimes-in-signature.rs:85:5
 153    |
 154 LL | /     move || {
 155 LL | |
 156 LL | |         *dest = g.get();
 157 LL | |     }
 158    | |_____^ ...so that the type `G` will meet its required lifetime bounds
 159    |
 160 help: consider adding an explicit lifetime bound...
 161    |
 162 LL |     G: Get<T> + 'a,
 163    |               ++++
 164
 165 error: aborting due to 8 previous errors
 166
 167 Some errors have detailed explanations: E0261, E0309, E0621, E0700.
 168 For more information about an error, try `rustc --explain E0261`.