Aug 01 21:41:46.172 INFO checking sparx-cipher-0.1.1 against 1.27.2+tmplazy for lazy_static-1
Aug 01 21:41:46.172 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 21:41:46.172 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 21:41:46.172 INFO running `"docker" "create" "-v" "/tmp/crater.E2clZPgbpWaO:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-0/1.27.2+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 21:41:46.416 INFO blam! 18d50926750b3047054795f19923d2e36cabe780b49e94de58bcdf8f25aa76c5
Aug 01 21:41:46.417 INFO running `"docker" "start" "-a" "18d50926750b3047054795f19923d2e36cabe780b49e94de58bcdf8f25aa76c5"`
Aug 01 21:41:47.569 INFO kablam!     Checking sparx-cipher v0.1.1 (file:///source)
Aug 01 21:41:48.485 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 01 21:41:48.485 INFO kablam!  --> benches/sparx.rs:1:1
Aug 01 21:41:48.485 INFO kablam!   |
Aug 01 21:41:48.485 INFO kablam! 1 | #![feature(test)]
Aug 01 21:41:48.485 INFO kablam!   | ^^^^^^^^^^^^^^^^^
Aug 01 21:41:48.486 INFO kablam! 
Aug 01 21:41:48.486 INFO kablam! error: aborting due to previous error
Aug 01 21:41:48.486 INFO kablam! 
Aug 01 21:41:48.486 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 01 21:41:48.498 INFO kablam! error: Could not compile `sparx-cipher`.
Aug 01 21:41:48.499 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 01 21:41:48.672 INFO kablam! error: build failed
Aug 01 21:41:48.674 INFO kablam! su: No module specific data is present
Aug 01 21:41:49.297 INFO running `"docker" "rm" "-f" "18d50926750b3047054795f19923d2e36cabe780b49e94de58bcdf8f25aa76c5"`
Aug 01 21:41:49.512 INFO blam! 18d50926750b3047054795f19923d2e36cabe780b49e94de58bcdf8f25aa76c5