Always exclude certain dependencies from logging

I'd like to have RUST_LOG env variable to work as usual, except never log anything from a couple of noisy dependencies.

I thought this would do the trick:

        let _ = env_logger::Builder::from_default_env()
            .filter(Some("html5ever"), log::LevelFilter::Off)
            .filter(Some("tantivy"), log::LevelFilter::Off)
            .try_init();

but it seems that RUST_LOG=debug enables debug output even for the dependencies I'm trying to filter out.

Is there a way to gracefully combine env vars and explicit filters, with my filter() calls taking precedence?

Start by reading env_logger::Builder::from_default_env and the filter() behavior, then reproduce the interaction with RUST_LOG=debug and explicit filters for html5ever and tantivy. Done means documenting or implementing a defined precedence rule where explicit filters can remain disabled while the environment configures other logging.