Aug 02 04:49:39.097 INFO checking lzf-0.3.1 against 1.27.2+tmplazy for lazy_static-1
Aug 02 04:49:39.097 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 04:49:39.097 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 04:49:39.097 INFO running `"docker" "create" "-v" "/tmp/crater.5f4wpPsCRxEB:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-2/1.27.2+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 04:49:39.341 INFO blam! 00908019a055101975be3a68949afcb081bffa0d096fcc7980881a04a72901cd
Aug 02 04:49:39.343 INFO running `"docker" "start" "-a" "00908019a055101975be3a68949afcb081bffa0d096fcc7980881a04a72901cd"`
Aug 02 04:49:40.427 INFO kablam!     Checking lzf v0.3.1 (file:///source)
Aug 02 04:49:41.706 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 04:49:41.706 INFO kablam!  --> benches/bench_basic.rs:1:1
Aug 02 04:49:41.706 INFO kablam!   |
Aug 02 04:49:41.706 INFO kablam! 1 | #![feature(test)]
Aug 02 04:49:41.706 INFO kablam!   | ^^^^^^^^^^^^^^^^^
Aug 02 04:49:41.706 INFO kablam! 
Aug 02 04:49:41.712 INFO kablam! error: aborting due to previous error
Aug 02 04:49:41.712 INFO kablam! 
Aug 02 04:49:41.712 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 04:49:41.721 INFO kablam! error: Could not compile `lzf`.
Aug 02 04:49:41.722 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 02 04:49:41.811 INFO kablam! error: build failed
Aug 02 04:49:41.813 INFO kablam! su: No module specific data is present
Aug 02 04:49:43.287 INFO running `"docker" "rm" "-f" "00908019a055101975be3a68949afcb081bffa0d096fcc7980881a04a72901cd"`
Aug 02 04:49:43.376 INFO blam! 00908019a055101975be3a68949afcb081bffa0d096fcc7980881a04a72901cd