Aug 02 09:59:34.765 INFO checking floyd-warshall-0.0.3 against 1.27.2 for lazy_static-1
Aug 02 09:59:34.765 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 09:59:34.765 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 09:59:34.765 INFO running `"docker" "create" "-v" "/tmp/crater.rY554owO0XRJ:/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 09:59:35.158 INFO blam! 281d5b734a62419d11f71659c14e28158aad80b0ca6a8b35bd5c2e9d89bf926e
Aug 02 09:59:35.160 INFO running `"docker" "start" "-a" "281d5b734a62419d11f71659c14e28158aad80b0ca6a8b35bd5c2e9d89bf926e"`
Aug 02 09:59:38.556 INFO kablam!     Checking floyd-warshall v0.0.3 (file:///source)
Aug 02 09:59:39.002 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 09:59:39.002 INFO kablam!  --> src/lib.rs:4:1
Aug 02 09:59:39.002 INFO kablam!   |
Aug 02 09:59:39.002 INFO kablam! 4 | #![feature(conservative_impl_trait)]
Aug 02 09:59:39.002 INFO kablam!   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 02 09:59:39.003 INFO kablam! 
Aug 02 09:59:39.003 INFO kablam! error: aborting due to previous error
Aug 02 09:59:39.003 INFO kablam! 
Aug 02 09:59:39.003 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 09:59:39.009 INFO kablam! error: Could not compile `floyd-warshall`.
Aug 02 09:59:39.010 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 02 09:59:39.093 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 09:59:39.093 INFO kablam!  --> src/lib.rs:4:1
Aug 02 09:59:39.093 INFO kablam!   |
Aug 02 09:59:39.093 INFO kablam! 4 | #![feature(conservative_impl_trait)]
Aug 02 09:59:39.093 INFO kablam!   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 02 09:59:39.094 INFO kablam! 
Aug 02 09:59:39.094 INFO kablam! error: aborting due to previous error
Aug 02 09:59:39.094 INFO kablam! 
Aug 02 09:59:39.094 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 09:59:39.102 INFO kablam! error: Could not compile `floyd-warshall`.
Aug 02 09:59:39.102 INFO kablam! 
Aug 02 09:59:39.102 INFO kablam! To learn more, run the command again with --verbose.
Aug 02 09:59:39.103 INFO kablam! su: No module specific data is present
Aug 02 09:59:40.101 INFO running `"docker" "rm" "-f" "281d5b734a62419d11f71659c14e28158aad80b0ca6a8b35bd5c2e9d89bf926e"`
Aug 02 09:59:40.181 INFO blam! 281d5b734a62419d11f71659c14e28158aad80b0ca6a8b35bd5c2e9d89bf926e