Aug 02 02:16:15.212 INFO checking pkg-1.1.0 against 1.27.2 for lazy_static-1
Aug 02 02:16:15.212 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 02:16:15.212 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 02:16:15.212 INFO running `"docker" "create" "-v" "/tmp/crater.jE6bvuYqltDh:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-4/1.27.2:/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 02:16:15.531 INFO blam! 99d48d309d9839a4482a49e09eba761430fbbd7e9ef37965adb7d502bb597559
Aug 02 02:16:15.534 INFO running `"docker" "start" "-a" "99d48d309d9839a4482a49e09eba761430fbbd7e9ef37965adb7d502bb597559"`
Aug 02 02:16:17.130 INFO kablam!     Checking pkg v1.1.0 (file:///source)
Aug 02 02:16:17.771 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 02:16:17.771 INFO kablam!   --> src/lib.rs:22:19
Aug 02 02:16:17.771 INFO kablam!    |
Aug 02 02:16:17.771 INFO kablam! 22 | #![cfg_attr(test, feature(test))]
Aug 02 02:16:17.771 INFO kablam!    |                   ^^^^^^^^^^^^^^
Aug 02 02:16:17.772 INFO kablam! 
Aug 02 02:16:17.772 INFO kablam! error: aborting due to previous error
Aug 02 02:16:17.772 INFO kablam! 
Aug 02 02:16:17.772 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 02:16:17.780 INFO kablam! error: Could not compile `pkg`.
Aug 02 02:16:17.780 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 02 02:16:17.921 INFO kablam! error: build failed
Aug 02 02:16:17.922 INFO kablam! su: No module specific data is present
Aug 02 02:16:18.472 INFO running `"docker" "rm" "-f" "99d48d309d9839a4482a49e09eba761430fbbd7e9ef37965adb7d502bb597559"`
Aug 02 02:16:18.631 INFO blam! 99d48d309d9839a4482a49e09eba761430fbbd7e9ef37965adb7d502bb597559