Aug 02 03:49:28.985 INFO checking natrium-0.2.0 against 1.27.2+tmplazy for lazy_static-1
Aug 02 03:49:28.985 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 03:49:28.985 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 03:49:28.985 INFO running `"docker" "create" "-v" "/tmp/crater.pYN7xMPVkowV:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-6/1.27.2+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 03:49:29.222 INFO blam! bd3aa3a6a2516a390028faaeacf521d14833cf1c2ec0e604df6e5e054a70229e
Aug 02 03:49:29.224 INFO running `"docker" "start" "-a" "bd3aa3a6a2516a390028faaeacf521d14833cf1c2ec0e604df6e5e054a70229e"`
Aug 02 03:49:30.525 INFO kablam!     Checking natrium v0.2.0 (file:///source)
Aug 02 03:49:30.888 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 03:49:30.888 INFO kablam!  --> src/lib.rs:2:1
Aug 02 03:49:30.888 INFO kablam!   |
Aug 02 03:49:30.888 INFO kablam! 2 | #![feature(external_doc)]
Aug 02 03:49:30.888 INFO kablam!   | ^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 02 03:49:30.888 INFO kablam! 
Aug 02 03:49:30.888 INFO kablam! error: aborting due to previous error
Aug 02 03:49:30.888 INFO kablam! 
Aug 02 03:49:30.888 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 03:49:30.893 INFO kablam! error: Could not compile `natrium`.
Aug 02 03:49:30.893 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 02 03:49:30.922 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 03:49:30.923 INFO kablam!  --> src/lib.rs:2:1
Aug 02 03:49:30.923 INFO kablam!   |
Aug 02 03:49:30.923 INFO kablam! 2 | #![feature(external_doc)]
Aug 02 03:49:30.923 INFO kablam!   | ^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 02 03:49:30.923 INFO kablam! 
Aug 02 03:49:30.923 INFO kablam! error: aborting due to previous error
Aug 02 03:49:30.923 INFO kablam! 
Aug 02 03:49:30.923 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 03:49:30.932 INFO kablam! error: Could not compile `natrium`.
Aug 02 03:49:30.932 INFO kablam! 
Aug 02 03:49:30.932 INFO kablam! To learn more, run the command again with --verbose.
Aug 02 03:49:30.933 INFO kablam! su: No module specific data is present
Aug 02 03:49:31.571 INFO running `"docker" "rm" "-f" "bd3aa3a6a2516a390028faaeacf521d14833cf1c2ec0e604df6e5e054a70229e"`
Aug 02 03:49:31.664 INFO blam! bd3aa3a6a2516a390028faaeacf521d14833cf1c2ec0e604df6e5e054a70229e