rust-book-cn/listings/ch04-understanding-ownership/no-listing-10-multiple-mut-not-allowed/output.txt
2021-05-09 14:49:31 +08:00

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$ cargo run
Compiling ownership v0.1.0 (file:///projects/ownership)
error[E0499]: cannot borrow `s` as mutable more than once at a time
--> src/main.rs:5:14
|
4 | let r1 = &mut s;
| ------ first mutable borrow occurs here
5 | let r2 = &mut s;
| ^^^^^^ second mutable borrow occurs here
6 |
7 | println!("{}, {}", r1, r2);
| -- first borrow later used here
error: aborting due to previous error
For more information about this error, try `rustc --explain E0499`.
error: could not compile `ownership`
To learn more, run the command again with --verbose.