error: calling `Mutex::lock` inside the scope of another `Mutex::lock` causes a deadlock --> $DIR/if_let_mutex.rs:10:5 | LL | if let Err(locked) = m.lock() { | ^ - this Mutex will remain locked for the entire `if let`-block... | _____| | | LL | | LL | | do_stuff(locked); LL | | } else { LL | | let lock = m.lock().unwrap(); | | - ... and is tried to lock again here, which will always deadlock. LL | | do_stuff(lock); LL | | }; | |_____^ | = help: move the lock call outside of the `if let ...` expression = note: `-D clippy::if-let-mutex` implied by `-D warnings` = help: to override `-D warnings` add `#[allow(clippy::if_let_mutex)]` error: calling `Mutex::lock` inside the scope of another `Mutex::lock` causes a deadlock --> $DIR/if_let_mutex.rs:23:5 | LL | if let Some(locked) = m.lock().unwrap().deref() { | ^ - this Mutex will remain locked for the entire `if let`-block... | _____| | | LL | | LL | | do_stuff(locked); LL | | } else { LL | | let lock = m.lock().unwrap(); | | - ... and is tried to lock again here, which will always deadlock. LL | | do_stuff(lock); LL | | }; | |_____^ | = help: move the lock call outside of the `if let ...` expression error: calling `Mutex::lock` inside the scope of another `Mutex::lock` causes a deadlock --> $DIR/if_let_mutex.rs:45:5 | LL | if let Ok(i) = mutex.lock() { | ^ ----- this Mutex will remain locked for the entire `if let`-block... | _____| | | LL | | LL | | do_stuff(i); LL | | } else { LL | | let _x = mutex.lock(); | | ----- ... and is tried to lock again here, which will always deadlock. LL | | }; | |_____^ | = help: move the lock call outside of the `if let ...` expression error: aborting due to 3 previous errors