Aug 02 06:17:27.638 INFO checking jobpool-0.3.8 against 1.27.2 for lazy_static-1
Aug 02 06:17:27.638 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 06:17:27.638 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 06:17:27.639 INFO running `"docker" "create" "-v" "/tmp/crater.TDZvNY46EROm:/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 06:17:27.878 INFO blam! 4dff4f02c1fe5057aec1585271ca79c41c095ced9b9d485abff9094909e17c80
Aug 02 06:17:27.880 INFO running `"docker" "start" "-a" "4dff4f02c1fe5057aec1585271ca79c41c095ced9b9d485abff9094909e17c80"`
Aug 02 06:17:28.997 INFO kablam!     Checking jobpool v0.3.8 (file:///source)
Aug 02 06:17:30.609 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 06:17:30.609 INFO kablam!  --> benches/queue.rs:1:1
Aug 02 06:17:30.609 INFO kablam!   |
Aug 02 06:17:30.609 INFO kablam! 1 | #![feature(test)]
Aug 02 06:17:30.609 INFO kablam!   | ^^^^^^^^^^^^^^^^^
Aug 02 06:17:30.610 INFO kablam! 
Aug 02 06:17:30.610 INFO kablam! error: aborting due to previous error
Aug 02 06:17:30.610 INFO kablam! 
Aug 02 06:17:30.610 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 06:17:30.628 INFO kablam! error: Could not compile `jobpool`.
Aug 02 06:17:30.628 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 02 06:17:30.989 INFO kablam! error: build failed
Aug 02 06:17:30.990 INFO kablam! su: No module specific data is present
Aug 02 06:17:32.293 INFO running `"docker" "rm" "-f" "4dff4f02c1fe5057aec1585271ca79c41c095ced9b9d485abff9094909e17c80"`
Aug 02 06:17:32.410 INFO blam! 4dff4f02c1fe5057aec1585271ca79c41c095ced9b9d485abff9094909e17c80