I'm in hashmaps3.rs double borrow purgatory :)

[feoh]

Other folks have suggested that I need a Refcell? But that wasn't mentioned in exercise or hints and I feel like I'm missing something really basic here.

My code: https://gist.github.com/feoh/eee5da5e7809d19e2cc4f60ce1cc7c58

This is the error I get:

⚠️  Compiling of exercises/hashmaps/hashmaps3.rs failed! Please try again. Here's the output:
error[E0499]: cannot borrow `scores` as mutable more than once at a time
  --> exercises/hashmaps/hashmaps3.rs:49:32
   |
43 |         let team1: &mut Team = scores.entry(team_1_name).or_insert(Team {
   |                                ------ first mutable borrow occurs here
...
49 |         let team2: &mut Team = scores.entry(team_2_name).or_insert(Team {
   |                                ^^^^^^ second mutable borrow occurs here
...
55 |         println!("team1: {:?}", team1);
   |                                 ----- first borrow later used here

error: aborting due to previous error

For more information about this error, try `rustc --explain E0499`.

I'd appreciate any hints anyone may have. I'm SUPER stuck.

[feoh]

OK now I'm feeling sheepish about having posted.

I figured out the solution. You just have to re-use a single &mut Team for both .entry().or_insert()

Solution: https://gist.github.com/feoh/608dc1495143021c38ad2a46beaf42d1