Aug 02 03:48:11.340 INFO checking nb-sync-0.2.0 against 1.27.2+tmplazy for lazy_static-1
Aug 02 03:48:11.340 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 03:48:11.340 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 03:48:11.341 INFO running `"docker" "create" "-v" "/tmp/crater.WzZ3uWqnkPjv:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-1/1.27.2+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 03:48:11.585 INFO blam! af3d1d53aeeaad64ac3db9898b62c2e9d51957eec1758b2c4418cf34173689df
Aug 02 03:48:11.587 INFO running `"docker" "start" "-a" "af3d1d53aeeaad64ac3db9898b62c2e9d51957eec1758b2c4418cf34173689df"`
Aug 02 03:48:12.465 INFO kablam!     Checking nb-sync v0.2.0 (file:///source)
Aug 02 03:48:12.712 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 03:48:12.712 INFO kablam!    --> src/lib.rs:134:1
Aug 02 03:48:12.712 INFO kablam!     |
Aug 02 03:48:12.712 INFO kablam! 134 | #![feature(const_fn)]
Aug 02 03:48:12.712 INFO kablam!     | ^^^^^^^^^^^^^^^^^^^^^
Aug 02 03:48:12.712 INFO kablam! 
Aug 02 03:48:12.712 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 03:48:12.712 INFO kablam!    --> src/lib.rs:135:1
Aug 02 03:48:12.712 INFO kablam!     |
Aug 02 03:48:12.712 INFO kablam! 135 | #![feature(optin_builtin_traits)]
Aug 02 03:48:12.712 INFO kablam!     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 02 03:48:12.712 INFO kablam! 
Aug 02 03:48:12.712 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 03:48:12.712 INFO kablam!    --> src/lib.rs:136:1
Aug 02 03:48:12.712 INFO kablam!     |
Aug 02 03:48:12.712 INFO kablam! 136 | #![feature(never_type)]
Aug 02 03:48:12.712 INFO kablam!     | ^^^^^^^^^^^^^^^^^^^^^^^
Aug 02 03:48:12.716 INFO kablam! 
Aug 02 03:48:12.719 INFO kablam! error: aborting due to 3 previous errors
Aug 02 03:48:12.719 INFO kablam! 
Aug 02 03:48:12.719 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 03:48:12.724 INFO kablam! error: Could not compile `nb-sync`.
Aug 02 03:48:12.724 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 02 03:48:13.026 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 03:48:13.026 INFO kablam!    --> src/lib.rs:134:1
Aug 02 03:48:13.026 INFO kablam!     |
Aug 02 03:48:13.026 INFO kablam! 134 | #![feature(const_fn)]
Aug 02 03:48:13.026 INFO kablam!     | ^^^^^^^^^^^^^^^^^^^^^
Aug 02 03:48:13.026 INFO kablam! 
Aug 02 03:48:13.026 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 03:48:13.026 INFO kablam!    --> src/lib.rs:135:1
Aug 02 03:48:13.026 INFO kablam!     |
Aug 02 03:48:13.026 INFO kablam! 135 | #![feature(optin_builtin_traits)]
Aug 02 03:48:13.026 INFO kablam!     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 02 03:48:13.026 INFO kablam! 
Aug 02 03:48:13.027 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 03:48:13.027 INFO kablam!    --> src/lib.rs:136:1
Aug 02 03:48:13.027 INFO kablam!     |
Aug 02 03:48:13.027 INFO kablam! 136 | #![feature(never_type)]
Aug 02 03:48:13.027 INFO kablam!     | ^^^^^^^^^^^^^^^^^^^^^^^
Aug 02 03:48:13.027 INFO kablam! 
Aug 02 03:48:13.030 INFO kablam! error: aborting due to 3 previous errors
Aug 02 03:48:13.030 INFO kablam! 
Aug 02 03:48:13.030 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 03:48:13.038 INFO kablam! error: Could not compile `nb-sync`.
Aug 02 03:48:13.038 INFO kablam! 
Aug 02 03:48:13.038 INFO kablam! To learn more, run the command again with --verbose.
Aug 02 03:48:13.040 INFO kablam! su: No module specific data is present
Aug 02 03:48:13.615 INFO running `"docker" "rm" "-f" "af3d1d53aeeaad64ac3db9898b62c2e9d51957eec1758b2c4418cf34173689df"`
Aug 02 03:48:13.768 INFO blam! af3d1d53aeeaad64ac3db9898b62c2e9d51957eec1758b2c4418cf34173689df