error[E0716]: temporary value dropped while borrowed --> $DIR/promoted_const_call2.rs:4:26 | LL | let _: &'static _ = &id(&String::new()); | ---------- ^^^^^^^^^^^^^^^^^^ creates a temporary value which is freed while still in use | | | type annotation requires that borrow lasts for `'static` ... LL | }; | - temporary value is freed at the end of this statement error[E0716]: temporary value dropped while borrowed --> $DIR/promoted_const_call2.rs:4:30 | LL | let _: &'static _ = &id(&String::new()); | ---------- ^^^^^^^^^^^^^ - temporary value is freed at the end of this statement | | | | | creates a temporary value which is freed while still in use | type annotation requires that borrow lasts for `'static` error[E0716]: temporary value dropped while borrowed --> $DIR/promoted_const_call2.rs:11:26 | LL | let _: &'static _ = &id(&String::new()); | ---------- ^^^^^^^^^^^^^^^^^^ creates a temporary value which is freed while still in use | | | type annotation requires that borrow lasts for `'static` ... LL | } | - temporary value is freed at the end of this statement error[E0716]: temporary value dropped while borrowed --> $DIR/promoted_const_call2.rs:11:30 | LL | let _: &'static _ = &id(&String::new()); | ---------- ^^^^^^^^^^^^^ - temporary value is freed at the end of this statement | | | | | creates a temporary value which is freed while still in use | type annotation requires that borrow lasts for `'static` error[E0493]: destructor of `String` cannot be evaluated at compile-time --> $DIR/promoted_const_call2.rs:4:30 | LL | let _: &'static _ = &id(&String::new()); | ^^^^^^^^^^^^^ the destructor for this type cannot be evaluated in constants error: aborting due to 5 previous errors Some errors have detailed explanations: E0493, E0716. For more information about an error, try `rustc --explain E0493`.