Aug 02 06:35:16.104 INFO checking ipc-channel-0.10.1 against 1.27.2 for lazy_static-1
Aug 02 06:35:16.104 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 06:35:16.104 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 06:35:16.104 INFO running `"docker" "create" "-v" "/tmp/crater.Deed9BrfNbqL:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-0/1.27.2:/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 06:35:16.374 INFO blam! 2e7748c5981ed35728fcda897ce62058835dbbda242ee003db75a4e0c5643625
Aug 02 06:35:16.377 INFO running `"docker" "start" "-a" "2e7748c5981ed35728fcda897ce62058835dbbda242ee003db75a4e0c5643625"`
Aug 02 06:35:17.299 INFO kablam!     Checking ipc-channel v0.10.1 (file:///source)
Aug 02 06:35:22.203 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 06:35:22.203 INFO kablam!  --> benches/bench.rs:1:1
Aug 02 06:35:22.203 INFO kablam!   |
Aug 02 06:35:22.203 INFO kablam! 1 | #![feature(test)]
Aug 02 06:35:22.203 INFO kablam!   | ^^^^^^^^^^^^^^^^^
Aug 02 06:35:22.209 INFO kablam! 
Aug 02 06:35:22.210 INFO kablam! error: aborting due to previous error
Aug 02 06:35:22.211 INFO kablam! 
Aug 02 06:35:22.211 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 06:35:22.227 INFO kablam! error: Could not compile `ipc-channel`.
Aug 02 06:35:22.228 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 02 06:35:24.357 INFO kablam! error: build failed
Aug 02 06:35:24.360 INFO kablam! su: No module specific data is present
Aug 02 06:35:25.028 INFO running `"docker" "rm" "-f" "2e7748c5981ed35728fcda897ce62058835dbbda242ee003db75a4e0c5643625"`
Aug 02 06:35:25.222 INFO blam! 2e7748c5981ed35728fcda897ce62058835dbbda242ee003db75a4e0c5643625