Aug 02 02:09:57.990 INFO checking podio-0.1.6 against 1.27.2+tmplazy for lazy_static-1
Aug 02 02:09:57.990 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 02:09:57.990 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 02:09:57.990 INFO running `"docker" "create" "-v" "/tmp/crater.TMZxSauQZtWz:/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 02 02:09:58.238 INFO blam! 48b51dd2b78133689b562ef784ef2c90efaa7e69ed73b979eec06126bcc0cdc4
Aug 02 02:09:58.239 INFO running `"docker" "start" "-a" "48b51dd2b78133689b562ef784ef2c90efaa7e69ed73b979eec06126bcc0cdc4"`
Aug 02 02:09:59.475 INFO kablam!     Checking podio v0.1.6 (file:///source)
Aug 02 02:10:00.691 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 02:10:00.691 INFO kablam!  --> benches/benchmark.rs:2:1
Aug 02 02:10:00.691 INFO kablam!   |
Aug 02 02:10:00.691 INFO kablam! 2 | #![feature(test)]
Aug 02 02:10:00.691 INFO kablam!   | ^^^^^^^^^^^^^^^^^
Aug 02 02:10:00.691 INFO kablam! 
Aug 02 02:10:00.691 INFO kablam! error: aborting due to previous error
Aug 02 02:10:00.691 INFO kablam! 
Aug 02 02:10:00.692 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 02:10:00.705 INFO kablam! error: Could not compile `podio`.
Aug 02 02:10:00.705 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 02 02:10:01.060 INFO kablam! error: build failed
Aug 02 02:10:01.066 INFO kablam! su: No module specific data is present
Aug 02 02:10:01.762 INFO running `"docker" "rm" "-f" "48b51dd2b78133689b562ef784ef2c90efaa7e69ed73b979eec06126bcc0cdc4"`
Aug 02 02:10:01.899 INFO blam! 48b51dd2b78133689b562ef784ef2c90efaa7e69ed73b979eec06126bcc0cdc4