Aug 02 03:58:34.093 INFO checking murmur3-0.4.1 against 1.27.2 for lazy_static-1
Aug 02 03:58:34.093 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 03:58:34.093 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 03:58:34.093 INFO running `"docker" "create" "-v" "/tmp/crater.u7pMoovQz8Fc:/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 03:58:34.414 INFO blam! dd0c94a5e875a0b8005e1d004500e18e68fb29a872dad7e3cf70e70b7a007cdf
Aug 02 03:58:34.416 INFO running `"docker" "start" "-a" "dd0c94a5e875a0b8005e1d004500e18e68fb29a872dad7e3cf70e70b7a007cdf"`
Aug 02 03:58:35.739 INFO kablam!     Checking murmur3 v0.4.1 (file:///source)
Aug 02 03:58:36.849 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 03:58:36.849 INFO kablam!  --> benches/bench.rs:2:1
Aug 02 03:58:36.849 INFO kablam!   |
Aug 02 03:58:36.849 INFO kablam! 2 | #![feature(test)]
Aug 02 03:58:36.849 INFO kablam!   | ^^^^^^^^^^^^^^^^^
Aug 02 03:58:36.850 INFO kablam! 
Aug 02 03:58:36.850 INFO kablam! error: aborting due to previous error
Aug 02 03:58:36.850 INFO kablam! 
Aug 02 03:58:36.850 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 03:58:36.856 INFO kablam! error: Could not compile `murmur3`.
Aug 02 03:58:36.856 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 02 03:58:37.129 INFO kablam! error: build failed
Aug 02 03:58:37.130 INFO kablam! su: No module specific data is present
Aug 02 03:58:38.160 INFO running `"docker" "rm" "-f" "dd0c94a5e875a0b8005e1d004500e18e68fb29a872dad7e3cf70e70b7a007cdf"`
Aug 02 03:58:38.247 INFO blam! dd0c94a5e875a0b8005e1d004500e18e68fb29a872dad7e3cf70e70b7a007cdf