Aug 01 22:24:22.532 INFO checking sha1-asm-0.4.2 against 1.27.2+tmplazy for lazy_static-1
Aug 01 22:24:22.532 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 22:24:22.532 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 22:24:22.532 INFO running `"docker" "create" "-v" "/tmp/crater.MboKINHLpuIJ:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-1/1.27.2+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 01 22:24:22.803 INFO blam! c3f82dbd2a64a57fc502fc8eead411897708f4e71c557fc68f63cb27b84aefe8
Aug 01 22:24:22.805 INFO running `"docker" "start" "-a" "c3f82dbd2a64a57fc502fc8eead411897708f4e71c557fc68f63cb27b84aefe8"`
Aug 01 22:24:24.143 INFO kablam!    Compiling sha1-asm v0.4.2 (file:///source)
Aug 01 22:24:26.575 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 01 22:24:26.575 INFO kablam!  --> benches/lib.rs:2:1
Aug 01 22:24:26.575 INFO kablam!   |
Aug 01 22:24:26.575 INFO kablam! 2 | #![feature(test)]
Aug 01 22:24:26.575 INFO kablam!   | ^^^^^^^^^^^^^^^^^
Aug 01 22:24:26.575 INFO kablam! 
Aug 01 22:24:26.576 INFO kablam! error: aborting due to previous error
Aug 01 22:24:26.576 INFO kablam! 
Aug 01 22:24:26.576 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 01 22:24:26.582 INFO kablam! error: Could not compile `sha1-asm`.
Aug 01 22:24:26.583 INFO kablam! 
Aug 01 22:24:26.583 INFO kablam! To learn more, run the command again with --verbose.
Aug 01 22:24:26.585 INFO kablam! su: No module specific data is present
Aug 01 22:24:27.148 INFO running `"docker" "rm" "-f" "c3f82dbd2a64a57fc502fc8eead411897708f4e71c557fc68f63cb27b84aefe8"`
Aug 01 22:24:27.353 INFO blam! c3f82dbd2a64a57fc502fc8eead411897708f4e71c557fc68f63cb27b84aefe8