Aug 01 21:41:47.153 INFO checking sparx-cipher-0.1.1 against 1.27.2 for lazy_static-1
Aug 01 21:41:47.153 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 21:41:47.153 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 21:41:47.153 INFO running `"docker" "create" "-v" "/tmp/crater.UBBsoYdX5wtM:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-3/1.27.2:/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 21:41:47.511 INFO blam! b0bbfe862b891c446818a0a069c4c933d97cf9941e5396cbd8ba061389651ad4
Aug 01 21:41:47.512 INFO running `"docker" "start" "-a" "b0bbfe862b891c446818a0a069c4c933d97cf9941e5396cbd8ba061389651ad4"`
Aug 01 21:41:48.332 INFO kablam!     Checking sparx-cipher v0.1.1 (file:///source)
Aug 01 21:41:49.350 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 01 21:41:49.350 INFO kablam!  --> benches/sparx.rs:1:1
Aug 01 21:41:49.350 INFO kablam!   |
Aug 01 21:41:49.350 INFO kablam! 1 | #![feature(test)]
Aug 01 21:41:49.351 INFO kablam!   | ^^^^^^^^^^^^^^^^^
Aug 01 21:41:49.351 INFO kablam! 
Aug 01 21:41:49.351 INFO kablam! error: aborting due to previous error
Aug 01 21:41:49.351 INFO kablam! 
Aug 01 21:41:49.351 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 01 21:41:49.359 INFO kablam! error: Could not compile `sparx-cipher`.
Aug 01 21:41:49.359 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 01 21:41:49.513 INFO kablam! error: build failed
Aug 01 21:41:49.515 INFO kablam! su: No module specific data is present
Aug 01 21:41:50.405 INFO running `"docker" "rm" "-f" "b0bbfe862b891c446818a0a069c4c933d97cf9941e5396cbd8ba061389651ad4"`
Aug 01 21:41:50.555 INFO blam! b0bbfe862b891c446818a0a069c4c933d97cf9941e5396cbd8ba061389651ad4