Aug 02 05:09:51.761 INFO checking lines-0.0.3 against 1.27.2 for lazy_static-1
Aug 02 05:09:51.761 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 05:09:51.761 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 05:09:51.761 INFO running `"docker" "create" "-v" "/tmp/crater.kRR3BAFjn4QI:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-1/1.27.2:/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 05:09:51.969 INFO blam! 048eb2f5af6898dd2a1e8cf77473085c55d967d433d6319d078a0d5e1188aee1
Aug 02 05:09:51.970 INFO running `"docker" "start" "-a" "048eb2f5af6898dd2a1e8cf77473085c55d967d433d6319d078a0d5e1188aee1"`
Aug 02 05:09:53.308 INFO kablam!     Checking lines v0.0.3 (file:///source)
Aug 02 05:09:55.123 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 05:09:55.123 INFO kablam!  --> benches/lib.rs:1:1
Aug 02 05:09:55.123 INFO kablam!   |
Aug 02 05:09:55.123 INFO kablam! 1 | #![feature(test)]
Aug 02 05:09:55.123 INFO kablam!   | ^^^^^^^^^^^^^^^^^
Aug 02 05:09:55.123 INFO kablam! 
Aug 02 05:09:55.123 INFO kablam! error: aborting due to previous error
Aug 02 05:09:55.123 INFO kablam! 
Aug 02 05:09:55.123 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 05:09:55.130 INFO kablam! error: Could not compile `lines`.
Aug 02 05:09:55.130 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 02 05:09:55.275 INFO kablam! error: build failed
Aug 02 05:09:55.276 INFO kablam! su: No module specific data is present
Aug 02 05:09:55.869 INFO running `"docker" "rm" "-f" "048eb2f5af6898dd2a1e8cf77473085c55d967d433d6319d078a0d5e1188aee1"`
Aug 02 05:09:56.076 INFO blam! 048eb2f5af6898dd2a1e8cf77473085c55d967d433d6319d078a0d5e1188aee1