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// run-rustfix
fn main() {
let x = std::sync::Mutex::new(1usize);
x.lock().unwrap() = 2;
//~^ ERROR invalid left-hand side of assignment
x.lock().unwrap() += 1;
//~^ ERROR binary assignment operation `+=` cannot be applied to type `MutexGuard<'_, usize>`
let mut y = x.lock().unwrap();
y = 2;
//~^ ERROR mismatched types
y += 1;
//~^ ERROR binary assignment operation `+=` cannot be applied to type `MutexGuard<'_, usize>`
}
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