Aug 01 22:41:04.858 INFO checking sequence_trie-0.3.5 against 1.27.2 for lazy_static-1
Aug 01 22:41:04.858 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 22:41:04.858 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 22:41:04.858 INFO running `"docker" "create" "-v" "/tmp/crater.r7A6Gy1iFM29:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-2/1.27.2:/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 22:41:05.192 INFO blam! 4ea3327f76b64cdedf5278c3e7e54fdda2179235a3fbfd01725aa6f3ede90198
Aug 01 22:41:05.193 INFO running `"docker" "start" "-a" "4ea3327f76b64cdedf5278c3e7e54fdda2179235a3fbfd01725aa6f3ede90198"`
Aug 01 22:41:06.452 INFO kablam!     Checking sequence_trie v0.3.5 (file:///source)
Aug 01 22:41:07.957 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 01 22:41:07.957 INFO kablam!  --> benches/vs_hashmap.rs:1:1
Aug 01 22:41:07.957 INFO kablam!   |
Aug 01 22:41:07.957 INFO kablam! 1 | #![feature(test)]
Aug 01 22:41:07.957 INFO kablam!   | ^^^^^^^^^^^^^^^^^
Aug 01 22:41:07.958 INFO kablam! 
Aug 01 22:41:07.958 INFO kablam! error: aborting due to previous error
Aug 01 22:41:07.958 INFO kablam! 
Aug 01 22:41:07.958 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 01 22:41:07.965 INFO kablam! error: Could not compile `sequence_trie`.
Aug 01 22:41:07.966 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 01 22:41:08.153 INFO kablam! error: build failed
Aug 01 22:41:08.161 INFO kablam! su: No module specific data is present
Aug 01 22:41:08.882 INFO running `"docker" "rm" "-f" "4ea3327f76b64cdedf5278c3e7e54fdda2179235a3fbfd01725aa6f3ede90198"`
Aug 01 22:41:09.038 INFO blam! 4ea3327f76b64cdedf5278c3e7e54fdda2179235a3fbfd01725aa6f3ede90198