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//! The `logger` module provides a setup function for `env_logger`. Its only function, //! `setup()` may be called multiple times. use env_logger; use std::sync::{Once, ONCE_INIT}; static INIT: Once = ONCE_INIT; /// Setup function that is only run once, even if called multiple times. pub fn setup() { INIT.call_once(|| { env_logger::Builder::from_default_env() .default_format_timestamp_nanos(true) .init(); }); }