Aug 02 02:52:18.382 INFO checking overflower-0.4.4 against 1.27.2 for lazy_static-1
Aug 02 02:52:18.382 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 02:52:18.382 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 02:52:18.382 INFO running `"docker" "create" "-v" "/tmp/crater.x08XvAWKSdXp:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-4/1.27.2:/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 02:52:18.633 INFO blam! cc9dda9edb5aeaba59998715f6c68ece76f5e319297e5a9fac8a4ba63bf7b950
Aug 02 02:52:18.634 INFO running `"docker" "start" "-a" "cc9dda9edb5aeaba59998715f6c68ece76f5e319297e5a9fac8a4ba63bf7b950"`
Aug 02 02:52:19.754 INFO kablam!    Compiling overflower_support v0.1.5
Aug 02 02:52:21.094 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 02:52:21.094 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/overflower_support-0.1.5/src/lib.rs:14:1
Aug 02 02:52:21.094 INFO kablam!    |
Aug 02 02:52:21.094 INFO kablam! 14 | #![feature(specialization)]
Aug 02 02:52:21.094 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 02 02:52:21.094 INFO kablam! 
Aug 02 02:52:21.156 INFO kablam! error: aborting due to previous error
Aug 02 02:52:21.158 INFO kablam! 
Aug 02 02:52:21.158 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 02:52:21.169 INFO kablam! error: Could not compile `overflower_support`.
Aug 02 02:52:21.170 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 02 02:52:21.192 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 02:52:21.192 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/overflower_support-0.1.5/src/lib.rs:14:1
Aug 02 02:52:21.192 INFO kablam!    |
Aug 02 02:52:21.192 INFO kablam! 14 | #![feature(specialization)]
Aug 02 02:52:21.192 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 02 02:52:21.192 INFO kablam! 
Aug 02 02:52:21.222 INFO kablam! error: aborting due to previous error
Aug 02 02:52:21.222 INFO kablam! 
Aug 02 02:52:21.222 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 02:52:21.230 INFO kablam! error: Could not compile `overflower_support`.
Aug 02 02:52:21.230 INFO kablam! 
Aug 02 02:52:21.230 INFO kablam! To learn more, run the command again with --verbose.
Aug 02 02:52:21.231 INFO kablam! su: No module specific data is present
Aug 02 02:52:22.050 INFO running `"docker" "rm" "-f" "cc9dda9edb5aeaba59998715f6c68ece76f5e319297e5a9fac8a4ba63bf7b950"`
Aug 02 02:52:22.198 INFO blam! cc9dda9edb5aeaba59998715f6c68ece76f5e319297e5a9fac8a4ba63bf7b950