Aug 02 05:10:30.435 INFO checking linear-map-1.2.0 against 1.27.2 for lazy_static-1
Aug 02 05:10:30.435 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 05:10:30.435 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 05:10:30.435 INFO running `"docker" "create" "-v" "/tmp/crater.RurjEWb6Mw74:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-7/1.27.2:/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 05:10:30.624 INFO blam! 4c63a164ca549aabbfda0f17488a78ae8ba4549b25f1a6c3335297c666e44a20
Aug 02 05:10:30.624 INFO running `"docker" "start" "-a" "4c63a164ca549aabbfda0f17488a78ae8ba4549b25f1a6c3335297c666e44a20"`
Aug 02 05:10:31.953 INFO kablam!     Checking linear-map v1.2.0 (file:///source)
Aug 02 05:10:34.232 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 05:10:34.232 INFO kablam!  --> benches/bench.rs:1:1
Aug 02 05:10:34.232 INFO kablam!   |
Aug 02 05:10:34.232 INFO kablam! 1 | #![feature(test)]
Aug 02 05:10:34.232 INFO kablam!   | ^^^^^^^^^^^^^^^^^
Aug 02 05:10:34.233 INFO kablam! 
Aug 02 05:10:34.233 INFO kablam! error: aborting due to previous error
Aug 02 05:10:34.233 INFO kablam! 
Aug 02 05:10:34.233 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 05:10:34.240 INFO kablam! error: Could not compile `linear-map`.
Aug 02 05:10:34.249 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 02 05:10:35.601 INFO kablam! error: build failed
Aug 02 05:10:35.602 INFO kablam! su: No module specific data is present
Aug 02 05:10:36.206 INFO running `"docker" "rm" "-f" "4c63a164ca549aabbfda0f17488a78ae8ba4549b25f1a6c3335297c666e44a20"`
Aug 02 05:10:36.342 INFO blam! 4c63a164ca549aabbfda0f17488a78ae8ba4549b25f1a6c3335297c666e44a20