Aug 01 18:29:24.952 INFO checking xi-unicode-0.1.0 against 1.27.2+tmplazy for lazy_static-1
Aug 01 18:29:24.952 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 18:29:24.952 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 18:29:24.953 INFO running `"docker" "create" "-v" "/tmp/crater.vby3BPje8uMu:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-1/1.27.2+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 18:29:25.195 INFO blam! 4cfaa63d793e7c6d337d068c68abf7bcd422215f569b906556b75926db1c574c
Aug 01 18:29:25.199 INFO running `"docker" "start" "-a" "4cfaa63d793e7c6d337d068c68abf7bcd422215f569b906556b75926db1c574c"`
Aug 01 18:29:26.230 INFO kablam!     Checking xi-unicode v0.1.0 (file:///source)
Aug 01 18:29:27.786 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 01 18:29:27.786 INFO kablam!   --> benches/bench.rs:15:1
Aug 01 18:29:27.786 INFO kablam!    |
Aug 01 18:29:27.786 INFO kablam! 15 | #![feature(test)]
Aug 01 18:29:27.786 INFO kablam!    | ^^^^^^^^^^^^^^^^^
Aug 01 18:29:27.786 INFO kablam! 
Aug 01 18:29:27.786 INFO kablam! error: aborting due to previous error
Aug 01 18:29:27.786 INFO kablam! 
Aug 01 18:29:27.787 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 01 18:29:27.792 INFO kablam! error: Could not compile `xi-unicode`.
Aug 01 18:29:27.792 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 01 18:29:30.617 INFO kablam! error: build failed
Aug 01 18:29:30.621 INFO kablam! su: No module specific data is present
Aug 01 18:29:31.402 INFO running `"docker" "rm" "-f" "4cfaa63d793e7c6d337d068c68abf7bcd422215f569b906556b75926db1c574c"`
Aug 01 18:29:31.543 INFO blam! 4cfaa63d793e7c6d337d068c68abf7bcd422215f569b906556b75926db1c574c