Revert "Add support for Rust edition 2018 in playpens"#1093

Merged

Dylan-DPC-zz merged 1 commit intomasterfrom

revert-1086-playpen-edition-2018

Nov 11, 2019

Commits on Nov 11, 2019

Revert "Add support for Rust edition 2018 in playpens (#1086)"
Dylan-DPC
authored