src/doc/book/listings/ch15-smart-pointers/no-listing-01-cant-borrow-immutable-as-mutable/output.txt

   1 $ cargo run
   2    Compiling borrowing v0.1.0 (file:///projects/borrowing)
   3 error[E0596]: cannot borrow `x` as mutable, as it is not declared as mutable
   4  --> src/main.rs:3:13
   5   |
   6 2 |     let x = 5;
   7   |         - help: consider changing this to be mutable: `mut x`
   8 3 |     let y = &mut x;
   9   |             ^^^^^^ cannot borrow as mutable
  10
  11 error: aborting due to previous error
  12
  13 For more information about this error, try `rustc --explain E0596`.
  14 error: could not compile `borrowing`.
  15
  16 To learn more, run the command again with --verbose.