Aug 02 11:45:37.821 INFO checking debug_sat-0.4.0 against 1.27.2+tmplazy for lazy_static-1
Aug 02 11:45:37.821 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 11:45:37.821 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 11:45:37.821 INFO running `"docker" "create" "-v" "/tmp/crater.oGMskHHfOiI0:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-4/1.27.2+tmplazy:/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 11:45:38.096 INFO blam! 3d77a94211f3b641677bfbe50ab382d6e60f53971fd8da1545e8b43934bf89b1
Aug 02 11:45:38.099 INFO running `"docker" "start" "-a" "3d77a94211f3b641677bfbe50ab382d6e60f53971fd8da1545e8b43934bf89b1"`
Aug 02 11:45:39.320 INFO kablam!     Checking debug_sat v0.4.0 (file:///source)
Aug 02 11:45:39.911 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 11:45:39.911 INFO kablam!    --> src/lib.rs:115:19
Aug 02 11:45:39.911 INFO kablam!     |
Aug 02 11:45:39.911 INFO kablam! 115 | #![cfg_attr(test, feature(test))]
Aug 02 11:45:39.912 INFO kablam!     |                   ^^^^^^^^^^^^^^
Aug 02 11:45:39.912 INFO kablam! 
Aug 02 11:45:39.920 INFO kablam! error: aborting due to previous error
Aug 02 11:45:39.920 INFO kablam! 
Aug 02 11:45:39.920 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 11:45:39.928 INFO kablam! error: Could not compile `debug_sat`.
Aug 02 11:45:39.928 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 02 11:45:40.236 INFO kablam! error: build failed
Aug 02 11:45:40.237 INFO kablam! su: No module specific data is present
Aug 02 11:45:40.897 INFO running `"docker" "rm" "-f" "3d77a94211f3b641677bfbe50ab382d6e60f53971fd8da1545e8b43934bf89b1"`
Aug 02 11:45:41.057 INFO blam! 3d77a94211f3b641677bfbe50ab382d6e60f53971fd8da1545e8b43934bf89b1