Aug 02 05:54:03.693 INFO checking lab-0.4.3 against 1.27.2 for lazy_static-1
Aug 02 05:54:03.693 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 05:54:03.693 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 05:54:03.693 INFO running `"docker" "create" "-v" "/tmp/crater.Jjpcge6eQX8A:/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 05:54:03.966 INFO blam! 4ff2e357fe9be677fc88ecc93e06af3fd22101dfbc134270632eca874dbb77a9
Aug 02 05:54:03.968 INFO running `"docker" "start" "-a" "4ff2e357fe9be677fc88ecc93e06af3fd22101dfbc134270632eca874dbb77a9"`
Aug 02 05:54:04.928 INFO kablam!     Checking lab v0.4.3 (file:///source)
Aug 02 05:54:06.302 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 05:54:06.302 INFO kablam!  --> benches/bench.rs:1:1
Aug 02 05:54:06.302 INFO kablam!   |
Aug 02 05:54:06.302 INFO kablam! 1 | #![feature(test)]
Aug 02 05:54:06.302 INFO kablam!   | ^^^^^^^^^^^^^^^^^
Aug 02 05:54:06.302 INFO kablam! 
Aug 02 05:54:06.302 INFO kablam! error: aborting due to previous error
Aug 02 05:54:06.302 INFO kablam! 
Aug 02 05:54:06.302 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 05:54:06.316 INFO kablam! error: Could not compile `lab`.
Aug 02 05:54:06.317 INFO kablam! 
Aug 02 05:54:06.317 INFO kablam! To learn more, run the command again with --verbose.
Aug 02 05:54:06.319 INFO kablam! su: No module specific data is present
Aug 02 05:54:07.043 INFO running `"docker" "rm" "-f" "4ff2e357fe9be677fc88ecc93e06af3fd22101dfbc134270632eca874dbb77a9"`
Aug 02 05:54:07.221 INFO blam! 4ff2e357fe9be677fc88ecc93e06af3fd22101dfbc134270632eca874dbb77a9