Aug 01 23:01:29.398 INFO checking sapling-crypto-0.0.1 against 1.27.2+tmplazy for lazy_static-1
Aug 01 23:01:29.398 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 23:01:29.398 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 23:01:29.398 INFO running `"docker" "create" "-v" "/tmp/crater.8PJGzK0NAoap:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-4/1.27.2+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 23:01:29.545 INFO blam! 97acc4a74855aeab54e9e9e417c938900325812bb1ffe6b8e53f8b9490c5bc8b
Aug 01 23:01:29.546 INFO running `"docker" "start" "-a" "97acc4a74855aeab54e9e9e417c938900325812bb1ffe6b8e53f8b9490c5bc8b"`
Aug 01 23:01:30.878 INFO kablam!     Checking pairing v0.13.2
Aug 01 23:01:30.878 INFO kablam!     Checking blake2 v0.7.1
Aug 01 23:01:31.393 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 01 23:01:31.393 INFO kablam!  --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/pairing-0.13.2/src/lib.rs:3:39
Aug 01 23:01:31.393 INFO kablam!   |
Aug 01 23:01:31.393 INFO kablam! 3 | #![cfg_attr(feature = "u128-support", feature(i128_type))]
Aug 01 23:01:31.393 INFO kablam!   |                                       ^^^^^^^^^^^^^^^^^^^
Aug 01 23:01:31.393 INFO kablam! 
Aug 01 23:01:31.409 INFO kablam! error: aborting due to previous error
Aug 01 23:01:31.409 INFO kablam! 
Aug 01 23:01:31.409 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 01 23:01:31.418 INFO kablam! error: Could not compile `pairing`.
Aug 01 23:01:31.418 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 01 23:01:31.711 INFO kablam! error: build failed
Aug 01 23:01:31.712 INFO kablam! su: No module specific data is present
Aug 01 23:01:32.334 INFO running `"docker" "rm" "-f" "97acc4a74855aeab54e9e9e417c938900325812bb1ffe6b8e53f8b9490c5bc8b"`
Aug 01 23:01:32.466 INFO blam! 97acc4a74855aeab54e9e9e417c938900325812bb1ffe6b8e53f8b9490c5bc8b