Aug 02 06:16:28.332 INFO checking joy-0.1.3 against 1.27.2+tmplazy for lazy_static-1
Aug 02 06:16:28.333 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 06:16:28.333 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 06:16:28.333 INFO running `"docker" "create" "-v" "/tmp/crater.ojI5a2txntNX:/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 02 06:16:28.648 INFO blam! 055c142c99e39ea54d6e81ab2fedbfc627422a328170145b2b5556154dfd7042
Aug 02 06:16:28.654 INFO running `"docker" "start" "-a" "055c142c99e39ea54d6e81ab2fedbfc627422a328170145b2b5556154dfd7042"`
Aug 02 06:16:29.606 INFO kablam!     Checking syscall v0.2.1
Aug 02 06:16:29.846 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 06:16:29.846 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/syscall-0.2.1/src/lib.rs:15:1
Aug 02 06:16:29.846 INFO kablam!    |
Aug 02 06:16:29.846 INFO kablam! 15 | #![feature(asm)]
Aug 02 06:16:29.846 INFO kablam!    | ^^^^^^^^^^^^^^^^
Aug 02 06:16:29.846 INFO kablam! 
Aug 02 06:16:29.847 INFO kablam! error: aborting due to previous error
Aug 02 06:16:29.847 INFO kablam! 
Aug 02 06:16:29.847 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 06:16:29.858 INFO kablam! error: Could not compile `syscall`.
Aug 02 06:16:29.858 INFO kablam! 
Aug 02 06:16:29.858 INFO kablam! To learn more, run the command again with --verbose.
Aug 02 06:16:29.860 INFO kablam! su: No module specific data is present
Aug 02 06:16:30.535 INFO running `"docker" "rm" "-f" "055c142c99e39ea54d6e81ab2fedbfc627422a328170145b2b5556154dfd7042"`
Aug 02 06:16:30.712 INFO blam! 055c142c99e39ea54d6e81ab2fedbfc627422a328170145b2b5556154dfd7042