Aug 01 22:19:51.966 INFO checking shell2batch-0.1.21 against 1.27.2 for lazy_static-1
Aug 01 22:19:51.967 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 22:19:51.967 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 22:19:51.968 INFO running `"docker" "create" "-v" "/tmp/crater.F2DtroNmGG6A:/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 01 22:19:52.195 INFO blam! fa1cfc8abc6d399a33f0944076f6f800f6d6cd7df5296286b12d732714ec1013
Aug 01 22:19:52.197 INFO running `"docker" "start" "-a" "fa1cfc8abc6d399a33f0944076f6f800f6d6cd7df5296286b12d732714ec1013"`
Aug 01 22:19:53.005 INFO kablam!     Checking shell2batch v0.1.21 (file:///source)
Aug 01 22:19:54.391 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 01 22:19:54.391 INFO kablam!  --> benches/bench_convert.rs:1:1
Aug 01 22:19:54.391 INFO kablam!   |
Aug 01 22:19:54.391 INFO kablam! 1 | #![feature(test)]
Aug 01 22:19:54.391 INFO kablam!   | ^^^^^^^^^^^^^^^^^
Aug 01 22:19:54.392 INFO kablam! 
Aug 01 22:19:54.392 INFO kablam! error: aborting due to previous error
Aug 01 22:19:54.392 INFO kablam! 
Aug 01 22:19:54.393 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 01 22:19:54.401 INFO kablam! error: Could not compile `shell2batch`.
Aug 01 22:19:54.402 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 01 22:19:54.722 INFO kablam! error: build failed
Aug 01 22:19:54.723 INFO kablam! su: No module specific data is present
Aug 01 22:19:55.195 INFO running `"docker" "rm" "-f" "fa1cfc8abc6d399a33f0944076f6f800f6d6cd7df5296286b12d732714ec1013"`
Aug 01 22:19:55.303 INFO blam! fa1cfc8abc6d399a33f0944076f6f800f6d6cd7df5296286b12d732714ec1013