Aug 01 19:30:43.653 INFO checking user-sync-0.1.0 against 1.27.2+tmplazy for lazy_static-1
Aug 01 19:30:43.653 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 19:30:43.653 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 19:30:43.653 INFO running `"docker" "create" "-v" "/tmp/crater.PRBjsko1Ghrq:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-7/1.27.2+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 19:30:43.818 INFO blam! 94cbe13d259d4e29d08c8cd9370a39448d1e55c192a822d140e0d82a36783200
Aug 01 19:30:43.820 INFO running `"docker" "start" "-a" "94cbe13d259d4e29d08c8cd9370a39448d1e55c192a822d140e0d82a36783200"`
Aug 01 19:30:44.817 INFO kablam!     Checking syscall v0.2.1
Aug 01 19:30:44.965 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 01 19:30:44.965 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/syscall-0.2.1/src/lib.rs:15:1
Aug 01 19:30:44.965 INFO kablam!    |
Aug 01 19:30:44.965 INFO kablam! 15 | #![feature(asm)]
Aug 01 19:30:44.965 INFO kablam!    | ^^^^^^^^^^^^^^^^
Aug 01 19:30:44.965 INFO kablam! 
Aug 01 19:30:44.965 INFO kablam! error: aborting due to previous error
Aug 01 19:30:44.965 INFO kablam! 
Aug 01 19:30:44.965 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 01 19:30:44.972 INFO kablam! error: Could not compile `syscall`.
Aug 01 19:30:44.972 INFO kablam! 
Aug 01 19:30:44.972 INFO kablam! To learn more, run the command again with --verbose.
Aug 01 19:30:44.973 INFO kablam! su: No module specific data is present
Aug 01 19:30:45.566 INFO running `"docker" "rm" "-f" "94cbe13d259d4e29d08c8cd9370a39448d1e55c192a822d140e0d82a36783200"`
Aug 01 19:30:45.684 INFO blam! 94cbe13d259d4e29d08c8cd9370a39448d1e55c192a822d140e0d82a36783200