Aug 02 14:21:30.268 INFO checking base_custom-0.1.13 against 1.27.2 for lazy_static-1
Aug 02 14:21:30.268 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 14:21:30.268 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 14:21:30.269 INFO running `"docker" "create" "-v" "/tmp/crater.AgKTONXhkMTK:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-6/1.27.2:/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 14:21:30.447 INFO blam! d59099192010aaadc7014e50f37572fcaf4f9be29fefc66766ba44383ba1122f
Aug 02 14:21:30.449 INFO running `"docker" "start" "-a" "d59099192010aaadc7014e50f37572fcaf4f9be29fefc66766ba44383ba1122f"`
Aug 02 14:21:31.458 INFO kablam!     Checking base_custom v0.1.13 (file:///source)
Aug 02 14:21:33.328 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 14:21:33.328 INFO kablam!  --> benches/bench.rs:1:1
Aug 02 14:21:33.328 INFO kablam!   |
Aug 02 14:21:33.328 INFO kablam! 1 | #![feature(test)]
Aug 02 14:21:33.328 INFO kablam!   | ^^^^^^^^^^^^^^^^^
Aug 02 14:21:33.330 INFO kablam! 
Aug 02 14:21:33.331 INFO kablam! error: aborting due to previous error
Aug 02 14:21:33.332 INFO kablam! 
Aug 02 14:21:33.332 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 14:21:33.344 INFO kablam! error: Could not compile `base_custom`.
Aug 02 14:21:33.344 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 02 14:21:34.291 INFO kablam! error: build failed
Aug 02 14:21:34.293 INFO kablam! su: No module specific data is present
Aug 02 14:21:35.042 INFO running `"docker" "rm" "-f" "d59099192010aaadc7014e50f37572fcaf4f9be29fefc66766ba44383ba1122f"`
Aug 02 14:21:35.189 INFO blam! d59099192010aaadc7014e50f37572fcaf4f9be29fefc66766ba44383ba1122f