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; | --- borrow of `*x` occurs here LL | *x += 1; | ^^^^^^^ assignment to borrowed `*x` occurs here 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:16:9 | LL | let y = &*x; | --- borrow of `*x` occurs here LL | *x += 1; | ^^^^^^^ assignment to borrowed `*x` occurs here LL | y | - returning this value requires that `*x` is borrowed for `'1` LL | })() | - return type of async closure is &'1 i32 error[E0506]: cannot assign to `*x` because it is borrowed --> $DIR/issue-74072-lifetime-name-annotations.rs:24:9 | LL | (async move || -> &i32 { | - let's call the lifetime of this reference `'1` LL | let y = &*x; | --- borrow of `*x` occurs here LL | *x += 1; | ^^^^^^^ assignment to borrowed `*x` occurs here 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:32:9 | LL | let y = &*x; | --- borrow of `*x` occurs here LL | *x += 1; | ^^^^^^^ assignment to borrowed `*x` occurs here 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 4 previous errors For more information about this error, try `rustc --explain E0506`.