Aug 02 13:01:36.328 INFO checking chan-0.1.21 against 1.27.2 for lazy_static-1
Aug 02 13:01:36.328 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 13:01:36.328 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 13:01:36.328 INFO running `"docker" "create" "-v" "/tmp/crater.Zf6IAVsY1mcV:/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 13:01:36.566 INFO blam! fc7cfdb9f926e4768981bc114cf7f1d66891f98bed9f706c83394d785491aac3
Aug 02 13:01:36.569 INFO running `"docker" "start" "-a" "fc7cfdb9f926e4768981bc114cf7f1d66891f98bed9f706c83394d785491aac3"`
Aug 02 13:01:38.526 INFO kablam!     Checking chan v0.1.21 (file:///source)
Aug 02 13:01:43.835 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 13:01:43.835 INFO kablam!  --> benches/throughput.rs:1:1
Aug 02 13:01:43.836 INFO kablam!   |
Aug 02 13:01:43.836 INFO kablam! 1 | #![feature(test)]
Aug 02 13:01:43.836 INFO kablam!   | ^^^^^^^^^^^^^^^^^
Aug 02 13:01:43.848 INFO kablam! 
Aug 02 13:01:43.852 INFO kablam! error: aborting due to previous error
Aug 02 13:01:43.852 INFO kablam! 
Aug 02 13:01:43.852 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 13:01:43.877 INFO kablam! error: Could not compile `chan`.
Aug 02 13:01:43.877 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 02 13:01:45.238 INFO kablam! error: build failed
Aug 02 13:01:45.240 INFO kablam! su: No module specific data is present
Aug 02 13:01:45.898 INFO running `"docker" "rm" "-f" "fc7cfdb9f926e4768981bc114cf7f1d66891f98bed9f706c83394d785491aac3"`
Aug 02 13:01:46.054 INFO blam! fc7cfdb9f926e4768981bc114cf7f1d66891f98bed9f706c83394d785491aac3