Aug 02 15:26:04.877 INFO checking RobotS-0.3.0 against 1.27.2 for lazy_static-1
Aug 02 15:26:04.877 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 15:26:04.877 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 15:26:04.877 INFO running `"docker" "create" "-v" "/tmp/crater.XaIS8WEyMfvp:/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 15:26:05.088 INFO blam! 2c82beb3d068bb89beb051c0deac07e6ebf3fdadecdb3dd6f15da1a234e41260
Aug 02 15:26:05.090 INFO running `"docker" "start" "-a" "2c82beb3d068bb89beb051c0deac07e6ebf3fdadecdb3dd6f15da1a234e41260"`
Aug 02 15:26:06.315 INFO kablam!     Checking RobotS v0.3.0 (file:///source)
Aug 02 15:26:12.464 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 15:26:12.464 INFO kablam!  --> benches/bench.rs:1:1
Aug 02 15:26:12.464 INFO kablam!   |
Aug 02 15:26:12.464 INFO kablam! 1 | #![feature(test)]
Aug 02 15:26:12.464 INFO kablam!   | ^^^^^^^^^^^^^^^^^
Aug 02 15:26:12.465 INFO kablam! 
Aug 02 15:26:12.470 INFO kablam! error: aborting due to previous error
Aug 02 15:26:12.470 INFO kablam! 
Aug 02 15:26:12.473 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 15:26:12.488 INFO kablam! error: Could not compile `RobotS`.
Aug 02 15:26:12.489 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 02 15:26:14.699 INFO kablam! error: build failed
Aug 02 15:26:14.700 INFO kablam! su: No module specific data is present
Aug 02 15:26:15.660 INFO running `"docker" "rm" "-f" "2c82beb3d068bb89beb051c0deac07e6ebf3fdadecdb3dd6f15da1a234e41260"`
Aug 02 15:26:15.826 INFO blam! 2c82beb3d068bb89beb051c0deac07e6ebf3fdadecdb3dd6f15da1a234e41260