Aug 01 21:39:54.088 INFO checking specs_guided_join-0.1.5 against 1.27.2+tmplazy for lazy_static-1
Aug 01 21:39:54.088 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 21:39:54.088 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 21:39:54.088 INFO running `"docker" "create" "-v" "/tmp/crater.mjzQz8Ywk0El:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-3/1.27.2+tmplazy:/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 21:39:54.351 INFO blam! 5c3af6b29f48f8155c6c93706ceb62d9545dce6e2690de9ced57405c51b51732
Aug 01 21:39:54.354 INFO running `"docker" "start" "-a" "5c3af6b29f48f8155c6c93706ceb62d9545dce6e2690de9ced57405c51b51732"`
Aug 01 21:39:55.471 INFO kablam!     Checking specs_guided_join v0.1.5 (file:///source)
Aug 01 21:39:58.444 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 01 21:39:58.444 INFO kablam!  --> benches/bench.rs:1:1
Aug 01 21:39:58.444 INFO kablam!   |
Aug 01 21:39:58.444 INFO kablam! 1 | #![feature(test)]
Aug 01 21:39:58.444 INFO kablam!   | ^^^^^^^^^^^^^^^^^
Aug 01 21:39:58.444 INFO kablam! 
Aug 01 21:39:58.445 INFO kablam! error: aborting due to previous error
Aug 01 21:39:58.445 INFO kablam! 
Aug 01 21:39:58.445 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 01 21:39:58.457 INFO kablam! error: Could not compile `specs_guided_join`.
Aug 01 21:39:58.457 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 01 21:39:58.801 INFO kablam! error: build failed
Aug 01 21:39:58.802 INFO kablam! su: No module specific data is present
Aug 01 21:39:59.315 INFO running `"docker" "rm" "-f" "5c3af6b29f48f8155c6c93706ceb62d9545dce6e2690de9ced57405c51b51732"`
Aug 01 21:39:59.531 INFO blam! 5c3af6b29f48f8155c6c93706ceb62d9545dce6e2690de9ced57405c51b51732