Aug 02 06:38:45.025 INFO checking interpolation-0.1.0 against 1.27.2+tmplazy for lazy_static-1 Aug 02 06:38:45.025 INFO running: cargo +1.27.2 check --frozen --all --all-targets Aug 02 06:38:45.025 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets Aug 02 06:38:45.025 INFO running `"docker" "create" "-v" "/tmp/crater.q80TbuDolzCc:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-4/1.27.2+tmplazy:/target:rw,Z" "-v" "/home/ec2-user/crater/./work/local/cargo-home:/cargo-home:ro,Z" "-v" "/home/ec2-user/crater/./work/local/rustup-home:/rustup-home:ro,Z" "-v" "/home/ec2-user/crater/./work/local/cargo-home/git:/cargo-home/git:rw,Z" "-e" "USER_ID=500" "-e" "CMD=cargo +1.27.2 check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "crater"` Aug 02 06:38:45.271 INFO blam! ee75ef15979518e280698e714e728a59f9fa1e268c92d24c5cbaf65df365e163 Aug 02 06:38:45.272 INFO running `"docker" "start" "-a" "ee75ef15979518e280698e714e728a59f9fa1e268c92d24c5cbaf65df365e163"` Aug 02 06:38:47.886 INFO kablam! Blocking waiting for file lock on the git checkouts Aug 02 06:38:47.892 INFO kablam! Checking interpolation v0.1.0 (file:///source) Aug 02 06:38:48.965 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel Aug 02 06:38:48.965 INFO kablam! --> benches/ease.rs:1:1 Aug 02 06:38:48.965 INFO kablam! | Aug 02 06:38:48.965 INFO kablam! 1 | #![feature(test)] Aug 02 06:38:48.965 INFO kablam! | ^^^^^^^^^^^^^^^^^ Aug 02 06:38:48.965 INFO kablam! Aug 02 06:38:48.966 INFO kablam! error: aborting due to previous error Aug 02 06:38:48.966 INFO kablam! Aug 02 06:38:48.966 INFO kablam! For more information about this error, try `rustc --explain E0554`. Aug 02 06:38:48.971 INFO kablam! error: Could not compile `interpolation`. Aug 02 06:38:48.971 INFO kablam! Aug 02 06:38:48.971 INFO kablam! To learn more, run the command again with --verbose. Aug 02 06:38:48.973 INFO kablam! su: No module specific data is present Aug 02 06:38:49.912 INFO running `"docker" "rm" "-f" "ee75ef15979518e280698e714e728a59f9fa1e268c92d24c5cbaf65df365e163"` Aug 02 06:38:50.047 INFO blam! ee75ef15979518e280698e714e728a59f9fa1e268c92d24c5cbaf65df365e163