Aug 02 02:46:07.736 INFO checking pairing-0.14.2 against 1.27.2 for lazy_static-1
Aug 02 02:46:07.736 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 02:46:07.736 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 02:46:07.736 INFO running `"docker" "create" "-v" "/tmp/crater.PomWy92SNJNp:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-5/1.27.2:/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 02 02:46:07.920 INFO blam! 5a35aae5d8f8d64aeb9d2dbc487efb87812fb86ad8da48c99088ef2bdc06cae0
Aug 02 02:46:07.928 INFO running `"docker" "start" "-a" "5a35aae5d8f8d64aeb9d2dbc487efb87812fb86ad8da48c99088ef2bdc06cae0"`
Aug 02 02:46:09.454 INFO kablam!     Checking pairing v0.14.2 (file:///source)
Aug 02 02:46:18.788 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 02:46:18.788 INFO kablam!  --> benches/pairing_benches.rs:1:1
Aug 02 02:46:18.788 INFO kablam!   |
Aug 02 02:46:18.788 INFO kablam! 1 | #![feature(test)]
Aug 02 02:46:18.788 INFO kablam!   | ^^^^^^^^^^^^^^^^^
Aug 02 02:46:18.788 INFO kablam! 
Aug 02 02:46:18.791 INFO kablam! error: aborting due to previous error
Aug 02 02:46:18.791 INFO kablam! 
Aug 02 02:46:18.791 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 02:46:18.807 INFO kablam! error: Could not compile `pairing`.
Aug 02 02:46:18.807 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 02 02:46:24.219 INFO kablam! error: build failed
Aug 02 02:46:24.221 INFO kablam! su: No module specific data is present
Aug 02 02:46:24.724 INFO running `"docker" "rm" "-f" "5a35aae5d8f8d64aeb9d2dbc487efb87812fb86ad8da48c99088ef2bdc06cae0"`
Aug 02 02:46:24.890 INFO blam! 5a35aae5d8f8d64aeb9d2dbc487efb87812fb86ad8da48c99088ef2bdc06cae0