Aug 02 12:40:33.829 INFO checking codgenhelp-0.0.1 against 1.27.2 for lazy_static-1
Aug 02 12:40:33.829 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 12:40:33.829 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 12:40:33.830 INFO running `"docker" "create" "-v" "/tmp/crater.GYEnn798eOeH:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-5/1.27.2:/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 12:40:34.150 INFO blam! 7cdf36bd031196b5d72fbc8acd6714ca489a3827f20fb3bed1e9fa60dd9f3e66
Aug 02 12:40:34.152 INFO running `"docker" "start" "-a" "7cdf36bd031196b5d72fbc8acd6714ca489a3827f20fb3bed1e9fa60dd9f3e66"`
Aug 02 12:40:35.080 INFO kablam!     Checking syn v0.10.8
Aug 02 12:40:42.228 INFO kablam!     Checking codgenhelp v0.0.1 (file:///source)
Aug 02 12:40:43.585 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 12:40:43.585 INFO kablam!  --> src/lib.rs:8:1
Aug 02 12:40:43.585 INFO kablam!   |
Aug 02 12:40:43.585 INFO kablam! 8 | #![feature(proc_macro, proc_macro_lib)]
Aug 02 12:40:43.585 INFO kablam!   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 02 12:40:43.585 INFO kablam! 
Aug 02 12:40:43.585 INFO kablam! error: aborting due to previous error
Aug 02 12:40:43.585 INFO kablam! 
Aug 02 12:40:43.585 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 12:40:43.586 INFO kablam! error: Could not compile `codgenhelp`.
Aug 02 12:40:43.586 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 02 12:40:43.785 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 12:40:43.785 INFO kablam!  --> src/lib.rs:8:1
Aug 02 12:40:43.785 INFO kablam!   |
Aug 02 12:40:43.785 INFO kablam! 8 | #![feature(proc_macro, proc_macro_lib)]
Aug 02 12:40:43.785 INFO kablam!   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 02 12:40:43.785 INFO kablam! 
Aug 02 12:40:43.785 INFO kablam! error: aborting due to previous error
Aug 02 12:40:43.785 INFO kablam! 
Aug 02 12:40:43.785 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 12:40:43.793 INFO kablam! error: Could not compile `codgenhelp`.
Aug 02 12:40:43.793 INFO kablam! 
Aug 02 12:40:43.794 INFO kablam! To learn more, run the command again with --verbose.
Aug 02 12:40:43.794 INFO kablam! su: No module specific data is present
Aug 02 12:40:44.686 INFO running `"docker" "rm" "-f" "7cdf36bd031196b5d72fbc8acd6714ca489a3827f20fb3bed1e9fa60dd9f3e66"`
Aug 02 12:40:44.845 INFO blam! 7cdf36bd031196b5d72fbc8acd6714ca489a3827f20fb3bed1e9fa60dd9f3e66