other teams. A Request for Comments (RFC) process for new language features was added in March 2014. The core team would grow to nine people by 2016 with over 1600 RFCs.

According to Andrew Binstock for Dr. Dobb's Journal in January 2014, while Rust was "widely viewed as a remarkably elegant language", adoption slowed because it radically changed from version to version. Rust development at this time focused on finalizing features for version 1.0