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並前往https://stackoverflow.com/questions/69861394/why-the-env-logger-doesnt-work-in-my-cli-program

Why the env_logger doesn't work in my cli program - Stack ...

use log::{info, warn}; fn main() { env_logger::init(); info!("starting up"); warn!( ... env | grep RUST RUST_LOG=output_log=info.

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