not clear how to produce debug output

[gnzlbg]

RUST_LOG=all cargo test some_bindgen_test -- --nocapture does not dump debug output. I can't find in the readme or the user guide or the issue template how to enable logging for bindgen.

How to enable debug output should be documented somewhere, or ideally it should "just work" for tests.

[emilio]

Generally I just run the test manually with ./target/debug/bindgen if I want debug output. I'm not sure if you can add some sort of hook before running all tests, but if you can fixing this should be a matter of calling env_logger::init() there or something.

[cbourjau]

Might this be related to this issue: rust-lang/rust#40298 ?

[emilio]

@jethrogb enabled logging in the test-suite in #1540.