Aug 02 13:56:37.395 INFO checking bloodhound-0.5.4 against 1.27.2 for lazy_static-1
Aug 02 13:56:37.395 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 13:56:37.395 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 13:56:37.395 INFO running `"docker" "create" "-v" "/tmp/crater.is8FL6FL6r2s:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-6/1.27.2:/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 13:56:37.587 INFO blam! b1c2b3a7af192e17a739db2eff470fb57a20f6a8c59838dec8aa73f4ed0d73d6
Aug 02 13:56:37.589 INFO running `"docker" "start" "-a" "b1c2b3a7af192e17a739db2eff470fb57a20f6a8c59838dec8aa73f4ed0d73d6"`
Aug 02 13:56:38.556 INFO kablam!     Checking bloodhound v0.5.4 (file:///source)
Aug 02 13:56:40.155 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 13:56:40.155 INFO kablam!  --> benches/index.rs:1:1
Aug 02 13:56:40.155 INFO kablam!   |
Aug 02 13:56:40.156 INFO kablam! 1 | #![feature(test)]
Aug 02 13:56:40.156 INFO kablam!   | ^^^^^^^^^^^^^^^^^
Aug 02 13:56:40.156 INFO kablam! 
Aug 02 13:56:40.156 INFO kablam! error: aborting due to previous error
Aug 02 13:56:40.156 INFO kablam! 
Aug 02 13:56:40.156 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 13:56:40.162 INFO kablam! error: Could not compile `bloodhound`.
Aug 02 13:56:40.162 INFO kablam! 
Aug 02 13:56:40.162 INFO kablam! To learn more, run the command again with --verbose.
Aug 02 13:56:40.163 INFO kablam! su: No module specific data is present
Aug 02 13:56:40.746 INFO running `"docker" "rm" "-f" "b1c2b3a7af192e17a739db2eff470fb57a20f6a8c59838dec8aa73f4ed0d73d6"`
Aug 02 13:56:40.975 INFO blam! b1c2b3a7af192e17a739db2eff470fb57a20f6a8c59838dec8aa73f4ed0d73d6