This avoids depending (through multipart) on old versions of mime, mime_guess, and log which duplicate with more recent versions that are also used. Per abonander/multipart#121 it looks like multipart wants to support an old version of rustc, and so may not be open to updating its dependencies.

I'm good with this! Thanks!

Nice! Could you publish on crates.io?

@SimonSapin sure! While I'm getting ready, there's nothing else that needs de-duping, right?

I tried it with [patch.crates-io] on mozilla-central and I think this is it, thanks!

Published!

@SimonSapin I don't care so much about old Rust support but I figured breaking on Debian-stretch might be an issue for Servo/Firefox.

Firefox generally bumps its Rust version requirement to the latest Stable two weeks after that release: https://wiki.mozilla.org/Rust_Update_Policy_for_Firefox