The ACCU 2018 Call for Session Proposals is now open.
ACCU is a major UK (but nonetheless very international) conference on programming and programming languages. Historically a large amount of C++ and related content. Exactly the place for some good Rust content.
ACCU organisation website: https://accu.org
ACCU conference website: https://conference.accu.org
ACCU conference call for session proposals: https://cfp.conference.accu.org