Aug 01 22:38:59.397 INFO checking serde_bencode-0.2.0 against 1.27.2+tmplazy for lazy_static-1
Aug 01 22:38:59.397 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 22:38:59.397 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 22:38:59.397 INFO running `"docker" "create" "-v" "/tmp/crater.JHt0ypLeuMPX:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-6/1.27.2+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 22:38:59.627 INFO blam! 08c113b40737a1f79639874ca4fdb3e3e83cdd2c27408ee55609fadb928858ed
Aug 01 22:38:59.629 INFO running `"docker" "start" "-a" "08c113b40737a1f79639874ca4fdb3e3e83cdd2c27408ee55609fadb928858ed"`
Aug 01 22:39:00.505 INFO kablam!     Checking serde_bencode v0.2.0 (file:///source)
Aug 01 22:39:03.170 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 01 22:39:03.170 INFO kablam!  --> benches/benches.rs:1:1
Aug 01 22:39:03.170 INFO kablam!   |
Aug 01 22:39:03.170 INFO kablam! 1 | #![feature(test)]
Aug 01 22:39:03.170 INFO kablam!   | ^^^^^^^^^^^^^^^^^
Aug 01 22:39:03.171 INFO kablam! 
Aug 01 22:39:03.172 INFO kablam! error: aborting due to previous error
Aug 01 22:39:03.172 INFO kablam! 
Aug 01 22:39:03.173 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 01 22:39:03.185 INFO kablam! error: Could not compile `serde_bencode`.
Aug 01 22:39:03.186 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 01 22:39:05.418 INFO kablam! error: build failed
Aug 01 22:39:05.419 INFO kablam! su: No module specific data is present
Aug 01 22:39:05.987 INFO running `"docker" "rm" "-f" "08c113b40737a1f79639874ca4fdb3e3e83cdd2c27408ee55609fadb928858ed"`
Aug 01 22:39:06.163 INFO blam! 08c113b40737a1f79639874ca4fdb3e3e83cdd2c27408ee55609fadb928858ed