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|
error[E0506]: cannot assign to `*x` because it is borrowed
--> $DIR/issue-74072-lifetime-name-annotations.rs:9:5
|
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:18:9
|
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`
LL | })()
| - return type of async closure is &'1 i32
error: lifetime may not live long enough
--> $DIR/issue-74072-lifetime-name-annotations.rs:14:20
|
LL | (async move || {
| ______-------------_^
| | | |
| | | return type of async closure `{async closure body@$DIR/issue-74072-lifetime-name-annotations.rs:14:20: 20:6}` 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:14:5
|
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:28:9
|
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`
LL | })()
| - return type of async closure is &'1 i32
error: lifetime may not live long enough
--> $DIR/issue-74072-lifetime-name-annotations.rs:24:28
|
LL | (async move || -> &i32 {
| ______---------------------_^
| | | |
| | | return type of async closure `{async closure body@$DIR/issue-74072-lifetime-name-annotations.rs:24:28: 30:6}` 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:24:5
|
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:36:9
|
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`
LL | }
| - return type of async block is &'1 i32
error: aborting due to 8 previous errors
Some errors have detailed explanations: E0506, E0716.
For more information about an error, try `rustc --explain E0506`.
|
