error[E0261]: use of undeclared lifetime name `'a`
  --> $DIR/missing-lifetimes-in-signature.rs:37:11
   |
LL | fn baz<G: 'a, T>(g: G, dest: &mut T) -> impl FnOnce() + '_
   |        -  ^^ undeclared lifetime
   |        |
   |        help: consider introducing lifetime `'a` here: `'a,`

error[E0759]: `dest` has an anonymous lifetime `'_` but it needs to satisfy a `'static` lifetime requirement
  --> $DIR/missing-lifetimes-in-signature.rs:19:5
   |
LL |   fn foo<G, T>(g: G, dest: &mut T) -> impl FnOnce()
   |                            ------ this data with an anonymous lifetime `'_`...
...
LL | /     move || {
LL | |         *dest = g.get();
LL | |     }
   | |_____^ ...is captured here...
   |
note: ...and is required to live as long as `'static` here
  --> $DIR/missing-lifetimes-in-signature.rs:15:37
   |
LL | fn foo<G, T>(g: G, dest: &mut T) -> impl FnOnce()
   |                                     ^^^^^^^^^^^^^
help: to declare that the `impl Trait` captures data from argument `dest`, you can add an explicit `'_` lifetime bound
   |
LL | fn foo<G, T>(g: G, dest: &mut T) -> impl FnOnce() + '_
   |                                                   ^^^^

error[E0311]: the parameter type `G` may not live long enough
  --> $DIR/missing-lifetimes-in-signature.rs:25:37
   |
LL | fn bar<G, T>(g: G, dest: &mut T) -> impl FnOnce() + '_
   |                                     ^^^^^^^^^^^^^^^^^^
   |
note: the parameter type `G` must be valid for the anonymous lifetime #1 defined on the function body at 25:1...
  --> $DIR/missing-lifetimes-in-signature.rs:25:1
   |
LL | / fn bar<G, T>(g: G, dest: &mut T) -> impl FnOnce() + '_
LL | |
LL | | where
LL | |     G: Get<T>
   | |_____________^
note: ...so that the type `[closure@$DIR/missing-lifetimes-in-signature.rs:30:5: 32:6 g:G, dest:&mut T]` will meet its required lifetime bounds
  --> $DIR/missing-lifetimes-in-signature.rs:25:37
   |
LL | fn bar<G, T>(g: G, dest: &mut T) -> impl FnOnce() + '_
   |                                     ^^^^^^^^^^^^^^^^^^
help: consider introducing an explicit lifetime bound
   |
LL | fn bar<'a, G: 'a, T>(g: G, dest: &mut T) -> impl FnOnce() + '_ + 'a
   |        ^^^^^                                                   ^^^^

error[E0311]: the parameter type `G` may not live long enough
  --> $DIR/missing-lifetimes-in-signature.rs:47:45
   |
LL | fn qux<'a, G: 'a, T>(g: G, dest: &mut T) -> impl FnOnce() + '_
   |                                             ^^^^^^^^^^^^^^^^^^
   |
note: the parameter type `G` must be valid for the anonymous lifetime #1 defined on the function body at 47:1...
  --> $DIR/missing-lifetimes-in-signature.rs:47:1
   |
LL | / fn qux<'a, G: 'a, T>(g: G, dest: &mut T) -> impl FnOnce() + '_
LL | |
LL | | where
LL | |     G: Get<T>
   | |_____________^
note: ...so that the type `[closure@$DIR/missing-lifetimes-in-signature.rs:52:5: 54:6 g:G, dest:&mut T]` will meet its required lifetime bounds
  --> $DIR/missing-lifetimes-in-signature.rs:47:45
   |
LL | fn qux<'a, G: 'a, T>(g: G, dest: &mut T) -> impl FnOnce() + '_
   |                                             ^^^^^^^^^^^^^^^^^^
help: consider introducing an explicit lifetime bound
   |
LL | fn qux<'b, 'a, G: 'b + 'a, T>(g: G, dest: &mut T) -> impl FnOnce() + '_ + 'b
   |        ^^^     ^^^^^^^                                                  ^^^^

error[E0311]: the parameter type `G` may not live long enough
  --> $DIR/missing-lifetimes-in-signature.rs:59:58
   |
LL |     fn qux<'b, G: Get<T> + 'b, T>(g: G, dest: &mut T) -> impl FnOnce() + '_ {
   |                                                          ^^^^^^^^^^^^^^^^^^
   |
note: the parameter type `G` must be valid for the anonymous lifetime #1 defined on the method body at 59:5...
  --> $DIR/missing-lifetimes-in-signature.rs:59:5
   |
LL |     fn qux<'b, G: Get<T> + 'b, T>(g: G, dest: &mut T) -> impl FnOnce() + '_ {
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
note: ...so that the type `[closure@$DIR/missing-lifetimes-in-signature.rs:61:9: 63:10 g:G, dest:&mut T]` will meet its required lifetime bounds
  --> $DIR/missing-lifetimes-in-signature.rs:59:58
   |
LL |     fn qux<'b, G: Get<T> + 'b, T>(g: G, dest: &mut T) -> impl FnOnce() + '_ {
   |                                                          ^^^^^^^^^^^^^^^^^^
help: consider introducing an explicit lifetime bound
   |
LL |     fn qux<'c, 'b, G: 'c + Get<T> + 'b, T>(g: G, dest: &mut T) -> impl FnOnce() + '_ + 'c {
   |            ^^^     ^^^^^^^                                                           ^^^^

error[E0621]: explicit lifetime required in the type of `dest`
  --> $DIR/missing-lifetimes-in-signature.rs:68:45
   |
LL | fn bat<'a, G: 'a, T>(g: G, dest: &mut T) -> impl FnOnce() + '_ + 'a
   |                                  ------     ^^^^^^^^^^^^^^^^^^^^^^^ lifetime `'a` required
   |                                  |
   |                                  help: add explicit lifetime `'a` to the type of `dest`: `&'a mut T`

error[E0309]: the parameter type `G` may not live long enough
  --> $DIR/missing-lifetimes-in-signature.rs:79:44
   |
LL | fn bak<'a, G, T>(g: G, dest: &'a mut T) -> impl FnOnce() + 'a
   |            -                               ^^^^^^^^^^^^^^^^^^ ...so that the type `[closure@$DIR/missing-lifetimes-in-signature.rs:84:5: 86:6 g:G, dest:&mut T]` will meet its required lifetime bounds
   |            |
   |            help: consider adding an explicit lifetime bound...: `G: 'a`

error: aborting due to 7 previous errors

Some errors have detailed explanations: E0261, E0309, E0621, E0759.
For more information about an error, try `rustc --explain E0261`.