Aug 01 20:05:12.516 INFO checking traverse-0.0.12 against 1.27.2 for lazy_static-1
Aug 01 20:05:12.516 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 20:05:12.516 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 20:05:12.516 INFO running `"docker" "create" "-v" "/tmp/crater.7sZRz3CgYZ5R:/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 01 20:05:12.756 INFO blam! 195a1bff0348cc2c3c95f7aca64c2836c48f788fd16f1d5ff07c20d8a3df7c5a
Aug 01 20:05:12.756 INFO running `"docker" "start" "-a" "195a1bff0348cc2c3c95f7aca64c2836c48f788fd16f1d5ff07c20d8a3df7c5a"`
Aug 01 20:05:13.961 INFO kablam! warning: dependency (num) specified without providing a local path, Git repository, or version to use. This will be considered an error in future versions
Aug 01 20:05:14.105 INFO kablam!    Compiling num-iter v0.1.37
Aug 01 20:05:14.137 INFO kablam!     Checking num-complex v0.2.0
Aug 01 20:05:14.139 INFO kablam!     Checking num-bigint v0.2.0
Aug 01 20:05:20.208 INFO kablam!     Checking num-rational v0.2.1
Aug 01 20:05:21.533 INFO kablam!     Checking num v0.2.0
Aug 01 20:05:21.824 INFO kablam!     Checking traverse v0.0.12 (file:///source)
Aug 01 20:05:22.914 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 01 20:05:22.914 INFO kablam!  --> benches/bench_slice.rs:1:1
Aug 01 20:05:22.914 INFO kablam!   |
Aug 01 20:05:22.914 INFO kablam! 1 | #![feature(test)]
Aug 01 20:05:22.914 INFO kablam!   | ^^^^^^^^^^^^^^^^^
Aug 01 20:05:22.914 INFO kablam! 
Aug 01 20:05:22.915 INFO kablam! error: aborting due to previous error
Aug 01 20:05:22.915 INFO kablam! 
Aug 01 20:05:22.915 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 01 20:05:22.928 INFO kablam! error: Could not compile `traverse`.
Aug 01 20:05:22.928 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 01 20:05:23.277 INFO kablam! error: build failed
Aug 01 20:05:23.277 INFO kablam! su: No module specific data is present
Aug 01 20:05:24.058 INFO running `"docker" "rm" "-f" "195a1bff0348cc2c3c95f7aca64c2836c48f788fd16f1d5ff07c20d8a3df7c5a"`
Aug 01 20:05:24.146 INFO blam! 195a1bff0348cc2c3c95f7aca64c2836c48f788fd16f1d5ff07c20d8a3df7c5a