error[E0716]: temporary value dropped while borrowed --> $DIR/borrowck-borrowed-uniq-rvalue-2.rs:20:20 | LL | let x = defer(&vec!["Goodbye", "world!"]); | ^^^^^^^^^^^^^^^^^^^^^^^^^ - temporary value is freed at the end of this statement | | | creates a temporary value which is freed while still in use LL | x.x[0]; | ------ borrow later used here | = note: this error originates in the macro `vec` (in Nightly builds, run with -Z macro-backtrace for more info) help: consider using a `let` binding to create a longer lived value | LL ~ let binding = vec!["Goodbye", "world!"]; LL ~ let x = defer(&binding); | error: aborting due to 1 previous error For more information about this error, try `rustc --explain E0716`.