Function forest_filecoin::cli_shared::logger::get_env_filter

fn get_env_filter(def: EnvFilter) -> EnvFilter

Returns an EnvFilter according to the RUST_LOG environment variable, or a default

• see default_env_filter and default_tool_filter

Note that tracing_subscriber::filter::Builder only allows a single default directive, whereas we want to provide multiple. See also https://github.com/tokio-rs/tracing/blob/27f688efb72316a26f3ec1f952c82626692c08ff/tracing-subscriber/src/filter/env/builder.rs#L189-L194