rust/tests/ui/async-await/issue-74072-lifetime-name-annotations.stderr

error[E0506]: cannot assign to `*x` because it is borrowed
  --> $DIR/issue-74072-lifetime-name-annotations.rs:8:5
   |
LL | pub async fn async_fn(x: &mut i32) -> &i32 {
   |                          - let's call the lifetime of this reference `'1`
LL |     let y = &*x;
   |             --- `*x` is borrowed here
LL |     *x += 1;
   |     ^^^^^^^ `*x` is assigned to here but it was already borrowed
LL |     y
   |     - returning this value requires that `*x` is borrowed for `'1`

error[E0506]: cannot assign to `*x` because it is borrowed
  --> $DIR/issue-74072-lifetime-name-annotations.rs:17:9
   |
LL |     (async move || {
   |                  - return type of async closure is &'1 i32
...
LL |         let y = &*x;
   |                 --- `*x` is borrowed here
LL |         *x += 1;
   |         ^^^^^^^ `*x` is assigned to here but it was already borrowed
LL |         y
   |         - returning this value requires that `*x` is borrowed for `'1`

error: lifetime may not live long enough
  --> $DIR/issue-74072-lifetime-name-annotations.rs:13:20
   |
LL |       (async move || {
   |  ______-------------_^
   | |      |           |
   | |      |           return type of async closure `{async closure body@$DIR/issue-74072-lifetime-name-annotations.rs:13:20: 19:6}` contains a lifetime `'2`
   | |      lifetime `'1` represents this closure's body
LL | |
LL | |
LL | |         let y = &*x;
LL | |         *x += 1;
LL | |         y
LL | |     })()
   | |_____^ returning this value requires that `'1` must outlive `'2`
   |
   = note: closure implements `FnMut`, so references to captured variables can't escape the closure

error[E0716]: temporary value dropped while borrowed
  --> $DIR/issue-74072-lifetime-name-annotations.rs:13:5
   |
LL |    pub fn async_closure(x: &mut i32) -> impl Future<Output=&i32> {
   |                            - let's call the lifetime of this reference `'1`
LL | //     (async move || {
LL | ||
LL | ||
LL | ||         let y = &*x;
LL | ||         *x += 1;
LL | ||         y
LL | ||     })()
   | ||______^_- argument requires that borrow lasts for `'1`
   | |_______|
   |         creates a temporary value which is freed while still in use
LL |    }
   |    - temporary value is freed at the end of this statement

error[E0506]: cannot assign to `*x` because it is borrowed
  --> $DIR/issue-74072-lifetime-name-annotations.rs:27:9
   |
LL |     (async move || -> &i32 {
   |                          - return type of async closure is &'1 i32
...
LL |         let y = &*x;
   |                 --- `*x` is borrowed here
LL |         *x += 1;
   |         ^^^^^^^ `*x` is assigned to here but it was already borrowed
LL |         y
   |         - returning this value requires that `*x` is borrowed for `'1`

error: lifetime may not live long enough
  --> $DIR/issue-74072-lifetime-name-annotations.rs:23:28
   |
LL |       (async move || -> &i32 {
   |  ______---------------------_^
   | |      |                |
   | |      |                return type of async closure `{async closure body@$DIR/issue-74072-lifetime-name-annotations.rs:23:28: 29:6}` contains a lifetime `'2`
   | |      lifetime `'1` represents this closure's body
LL | |
LL | |
LL | |         let y = &*x;
LL | |         *x += 1;
LL | |         y
LL | |     })()
   | |_____^ returning this value requires that `'1` must outlive `'2`
   |
   = note: closure implements `FnMut`, so references to captured variables can't escape the closure

error[E0716]: temporary value dropped while borrowed
  --> $DIR/issue-74072-lifetime-name-annotations.rs:23:5
   |
LL |    pub fn async_closure_explicit_return_type(x: &mut i32) -> impl Future<Output=&i32> {
   |                                                 - let's call the lifetime of this reference `'1`
LL | //     (async move || -> &i32 {
LL | ||
LL | ||
LL | ||         let y = &*x;
LL | ||         *x += 1;
LL | ||         y
LL | ||     })()
   | ||______^_- argument requires that borrow lasts for `'1`
   | |_______|
   |         creates a temporary value which is freed while still in use
LL |    }
   |    - temporary value is freed at the end of this statement

error[E0506]: cannot assign to `*x` because it is borrowed
  --> $DIR/issue-74072-lifetime-name-annotations.rs:35:9
   |
LL |     async move {
   |              - return type of async block is &'1 i32
LL |         let y = &*x;
   |                 --- `*x` is borrowed here
LL |         *x += 1;
   |         ^^^^^^^ `*x` is assigned to here but it was already borrowed
LL |         y
   |         - returning this value requires that `*x` is borrowed for `'1`

error: aborting due to 8 previous errors

Some errors have detailed explanations: E0506, E0716.
For more information about an error, try `rustc --explain E0506`.