error[E0015]: calls in statics are limited

[jinq0123]

Rust 1.56.1 compiles error:

error[E0015]: calls in statics are limited to constant functions, tuple structs and tuple variants
  --> d:\Users\jinqing01\.cargo\registry\src\github.com-1ecc6299db9ec823\ctrlc-3.4.0\src\lib.rs:63:31
   |
63 | static INIT_LOCK: Mutex<()> = Mutex::new(());
   |                               ^^^^^^^^^^^^^^

For more information about this error, try `rustc --explain E0015`.
error: could not compile `ctrlc` due to previous error

[Detegr]

Version 3.2.5 (or 3.3.1 if you don't have conflicting handlers from elsewhere) should work for 1.56.1