Aug 01 21:46:33.942 INFO checking sorted_containers-0.1.1 against 1.27.2 for lazy_static-1
Aug 01 21:46:33.942 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 21:46:33.942 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 21:46:33.942 INFO running `"docker" "create" "-v" "/tmp/crater.23vdtt5oEITT:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-6/1.27.2:/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 01 21:46:34.206 INFO blam! cdd617e8a4a391730ef3b47687b9852186ffa16116359b7e995563ead6d5f112
Aug 01 21:46:34.209 INFO running `"docker" "start" "-a" "cdd617e8a4a391730ef3b47687b9852186ffa16116359b7e995563ead6d5f112"`
Aug 01 21:46:35.288 INFO kablam!     Checking sorted_containers v0.1.1 (file:///source)
Aug 01 21:46:36.015 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 01 21:46:36.015 INFO kablam!  --> benches/sorted_vec.rs:1:1
Aug 01 21:46:36.015 INFO kablam!   |
Aug 01 21:46:36.015 INFO kablam! 1 | #![feature(test)]
Aug 01 21:46:36.015 INFO kablam!   | ^^^^^^^^^^^^^^^^^
Aug 01 21:46:36.015 INFO kablam! 
Aug 01 21:46:36.016 INFO kablam! error: aborting due to previous error
Aug 01 21:46:36.016 INFO kablam! 
Aug 01 21:46:36.016 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 01 21:46:36.038 INFO kablam! error: Could not compile `sorted_containers`.
Aug 01 21:46:36.038 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 01 21:46:36.206 INFO kablam! error: build failed
Aug 01 21:46:36.207 INFO kablam! su: No module specific data is present
Aug 01 21:46:36.787 INFO running `"docker" "rm" "-f" "cdd617e8a4a391730ef3b47687b9852186ffa16116359b7e995563ead6d5f112"`
Aug 01 21:46:36.946 INFO blam! cdd617e8a4a391730ef3b47687b9852186ffa16116359b7e995563ead6d5f112