Aug 02 06:22:25.718 INFO checking jam_derive-0.0.1 against 1.27.2 for lazy_static-1
Aug 02 06:22:25.718 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 06:22:25.718 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 06:22:25.718 INFO running `"docker" "create" "-v" "/tmp/crater.7bEoD6FVWkxA:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-3/1.27.2:/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 06:22:25.949 INFO blam! 39b6832ba5ca775957a9b275c5ee75aa8204d633241d179419aad84dec2aa530
Aug 02 06:22:25.949 INFO running `"docker" "start" "-a" "39b6832ba5ca775957a9b275c5ee75aa8204d633241d179419aad84dec2aa530"`
Aug 02 06:22:27.121 INFO kablam!     Checking jam_derive v0.0.1 (file:///source)
Aug 02 06:22:28.465 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 06:22:28.465 INFO kablam!   --> src/lib.rs:34:1
Aug 02 06:22:28.465 INFO kablam!    |
Aug 02 06:22:28.465 INFO kablam! 34 | #![feature(proc_macro, proc_macro_lib)]
Aug 02 06:22:28.465 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 02 06:22:28.466 INFO kablam! 
Aug 02 06:22:28.467 INFO kablam! error: aborting due to previous error
Aug 02 06:22:28.467 INFO kablam! 
Aug 02 06:22:28.468 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 06:22:28.478 INFO kablam! error: Could not compile `jam_derive`.
Aug 02 06:22:28.479 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 02 06:22:28.697 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 06:22:28.697 INFO kablam!   --> src/lib.rs:34:1
Aug 02 06:22:28.697 INFO kablam!    |
Aug 02 06:22:28.698 INFO kablam! 34 | #![feature(proc_macro, proc_macro_lib)]
Aug 02 06:22:28.698 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 02 06:22:28.698 INFO kablam! 
Aug 02 06:22:28.698 INFO kablam! error: aborting due to previous error
Aug 02 06:22:28.698 INFO kablam! 
Aug 02 06:22:28.698 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 06:22:28.709 INFO kablam! error: Could not compile `jam_derive`.
Aug 02 06:22:28.710 INFO kablam! 
Aug 02 06:22:28.710 INFO kablam! To learn more, run the command again with --verbose.
Aug 02 06:22:28.711 INFO kablam! su: No module specific data is present
Aug 02 06:22:29.618 INFO running `"docker" "rm" "-f" "39b6832ba5ca775957a9b275c5ee75aa8204d633241d179419aad84dec2aa530"`
Aug 02 06:22:29.771 INFO blam! 39b6832ba5ca775957a9b275c5ee75aa8204d633241d179419aad84dec2aa530