Aug 02 00:09:55.625 INFO checking rsjs-0.1.2 against 1.27.2 for lazy_static-1
Aug 02 00:09:55.625 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 00:09:55.625 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 00:09:55.625 INFO running `"docker" "create" "-v" "/tmp/crater.lbzzPUn5phjV:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-1/1.27.2:/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 00:09:55.875 INFO blam! aa746a77e05ad2b7bad38d84ea08e1586a3636a996783b15421948b98277b671
Aug 02 00:09:55.903 INFO running `"docker" "start" "-a" "aa746a77e05ad2b7bad38d84ea08e1586a3636a996783b15421948b98277b671"`
Aug 02 00:09:57.076 INFO kablam!    Compiling rsjs v0.1.2 (file:///source)
Aug 02 00:09:57.478 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 00:09:57.478 INFO kablam!  --> build.rs:1:1
Aug 02 00:09:57.478 INFO kablam!   |
Aug 02 00:09:57.478 INFO kablam! 1 | #![feature(pattern)]
Aug 02 00:09:57.478 INFO kablam!   | ^^^^^^^^^^^^^^^^^^^^
Aug 02 00:09:57.478 INFO kablam! 
Aug 02 00:09:57.479 INFO kablam! error: aborting due to previous error
Aug 02 00:09:57.479 INFO kablam! 
Aug 02 00:09:57.479 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 00:09:57.492 INFO kablam! error: Could not compile `rsjs`.
Aug 02 00:09:57.502 INFO kablam! 
Aug 02 00:09:57.502 INFO kablam! To learn more, run the command again with --verbose.
Aug 02 00:09:57.514 INFO kablam! su: No module specific data is present
Aug 02 00:09:58.214 INFO running `"docker" "rm" "-f" "aa746a77e05ad2b7bad38d84ea08e1586a3636a996783b15421948b98277b671"`
Aug 02 00:09:58.396 INFO blam! aa746a77e05ad2b7bad38d84ea08e1586a3636a996783b15421948b98277b671