Aug 02 07:38:38.113 INFO checking greentask-0.2.0 against 1.27.2+tmplazy for lazy_static-1
Aug 02 07:38:38.113 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 07:38:38.113 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 07:38:38.113 INFO running `"docker" "create" "-v" "/tmp/crater.WhdD2mL6GR4j:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-2/1.27.2+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 07:38:38.364 INFO blam! 4405975cd818cd927905c0cd39db305e2c276a471376e4d2df7d4aaa5f3214b3
Aug 02 07:38:38.366 INFO running `"docker" "start" "-a" "4405975cd818cd927905c0cd39db305e2c276a471376e4d2df7d4aaa5f3214b3"`
Aug 02 07:38:39.290 INFO kablam!     Checking coroutine v0.8.0
Aug 02 07:38:39.785 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 07:38:39.785 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/coroutine-0.8.0/src/lib.rs:25:1
Aug 02 07:38:39.785 INFO kablam!    |
Aug 02 07:38:39.785 INFO kablam! 25 | #![feature(fnbox)]
Aug 02 07:38:39.785 INFO kablam!    | ^^^^^^^^^^^^^^^^^^
Aug 02 07:38:39.785 INFO kablam! 
Aug 02 07:38:39.786 INFO kablam! error: aborting due to previous error
Aug 02 07:38:39.786 INFO kablam! 
Aug 02 07:38:39.786 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 07:38:39.794 INFO kablam! error: Could not compile `coroutine`.
Aug 02 07:38:39.794 INFO kablam! 
Aug 02 07:38:39.794 INFO kablam! To learn more, run the command again with --verbose.
Aug 02 07:38:39.796 INFO kablam! su: No module specific data is present
Aug 02 07:38:40.807 INFO running `"docker" "rm" "-f" "4405975cd818cd927905c0cd39db305e2c276a471376e4d2df7d4aaa5f3214b3"`
Aug 02 07:38:40.985 INFO blam! 4405975cd818cd927905c0cd39db305e2c276a471376e4d2df7d4aaa5f3214b3