Aug 02 07:25:04.765 INFO checking hash_hasher-1.0.0 against 1.27.2 for lazy_static-1
Aug 02 07:25:04.765 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 07:25:04.765 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 07:25:04.765 INFO running `"docker" "create" "-v" "/tmp/crater.NBUKqGmifeUC:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-1/1.27.2:/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 07:25:04.958 INFO blam! 1c50b97a3127a11e1e2a27f201da0198f50dfe5bb1ef4dd70d7ac9b47b68395a
Aug 02 07:25:04.966 INFO running `"docker" "start" "-a" "1c50b97a3127a11e1e2a27f201da0198f50dfe5bb1ef4dd70d7ac9b47b68395a"`
Aug 02 07:25:06.068 INFO kablam!     Checking hash_hasher v1.0.0 (file:///source)
Aug 02 07:25:06.808 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 07:25:06.808 INFO kablam!  --> benches/lib.rs:8:1
Aug 02 07:25:06.809 INFO kablam!   |
Aug 02 07:25:06.809 INFO kablam! 8 | #![feature(test)]
Aug 02 07:25:06.809 INFO kablam!   | ^^^^^^^^^^^^^^^^^
Aug 02 07:25:06.809 INFO kablam! 
Aug 02 07:25:06.809 INFO kablam! error: aborting due to previous error
Aug 02 07:25:06.809 INFO kablam! 
Aug 02 07:25:06.809 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 07:25:06.818 INFO kablam! error: Could not compile `hash_hasher`.
Aug 02 07:25:06.818 INFO kablam! 
Aug 02 07:25:06.818 INFO kablam! To learn more, run the command again with --verbose.
Aug 02 07:25:06.823 INFO kablam! su: No module specific data is present
Aug 02 07:25:07.770 INFO running `"docker" "rm" "-f" "1c50b97a3127a11e1e2a27f201da0198f50dfe5bb1ef4dd70d7ac9b47b68395a"`
Aug 02 07:25:07.857 INFO blam! 1c50b97a3127a11e1e2a27f201da0198f50dfe5bb1ef4dd70d7ac9b47b68395a