Aug 01 16:47:52.342 INFO checking eun-ice/atomicring against 1.27.2 for lazy_static-1
Aug 01 16:47:52.342 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 16:47:52.342 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 16:47:52.342 INFO running `"docker" "create" "-v" "/tmp/crater.NA39DWhxJQSi:/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 01 16:47:52.631 INFO blam! dbb32a04694a416aaa671038d16915e2b2ceff073aabd7d648fe3bdd129bb995
Aug 01 16:47:52.644 INFO running `"docker" "start" "-a" "dbb32a04694a416aaa671038d16915e2b2ceff073aabd7d648fe3bdd129bb995"`
Aug 01 16:47:53.769 INFO kablam!     Checking atomicring v1.0.0 (file:///source)
Aug 01 16:47:55.554 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 01 16:47:55.554 INFO kablam!  --> benches/bench_atomic_ring.rs:1:1
Aug 01 16:47:55.554 INFO kablam!   |
Aug 01 16:47:55.554 INFO kablam! 1 | #![feature(test)]
Aug 01 16:47:55.554 INFO kablam!   | ^^^^^^^^^^^^^^^^^
Aug 01 16:47:55.554 INFO kablam! 
Aug 01 16:47:55.555 INFO kablam! error: aborting due to previous error
Aug 01 16:47:55.555 INFO kablam! 
Aug 01 16:47:55.555 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 01 16:47:55.563 INFO kablam! error: Could not compile `atomicring`.
Aug 01 16:47:55.565 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 01 16:47:56.664 INFO kablam! error: build failed
Aug 01 16:47:56.665 INFO kablam! su: No module specific data is present
Aug 01 16:47:57.286 INFO running `"docker" "rm" "-f" "dbb32a04694a416aaa671038d16915e2b2ceff073aabd7d648fe3bdd129bb995"`
Aug 01 16:47:57.500 INFO blam! dbb32a04694a416aaa671038d16915e2b2ceff073aabd7d648fe3bdd129bb995