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// check-pass
use std::collections::HashMap;
use std::sync::Mutex;
fn i_used_to_be_able_to(foo: &Mutex<HashMap<usize, usize>>) -> Vec<(usize, usize)> {
let mut foo = foo.lock().unwrap();
foo.drain().collect()
}
fn but_after_nightly_update_now_i_gotta(foo: &Mutex<HashMap<usize, usize>>) -> Vec<(usize, usize)> {
let mut foo = foo.lock().unwrap();
return foo.drain().collect();
}
fn main() {}
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