Aug 02 04:00:11.801 INFO checking multiboot-0.4.0 against 1.27.2 for lazy_static-1
Aug 02 04:00:11.801 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 04:00:11.801 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 04:00:11.801 INFO running `"docker" "create" "-v" "/tmp/crater.XuPHduHixOVH:/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 04:00:12.009 INFO blam! 8cc59382032a5453944c980aa8b35aded71f3f6e6e29fada82f69be2142005c0
Aug 02 04:00:12.010 INFO running `"docker" "start" "-a" "8cc59382032a5453944c980aa8b35aded71f3f6e6e29fada82f69be2142005c0"`
Aug 02 04:00:12.867 INFO kablam!     Checking multiboot v0.4.0 (file:///source)
Aug 02 04:00:13.395 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 04:00:13.395 INFO kablam!  --> tests/mbtest.rs:1:1
Aug 02 04:00:13.395 INFO kablam!   |
Aug 02 04:00:13.396 INFO kablam! 1 | #![feature(lang_items, core_intrinsics, panic_implementation)]
Aug 02 04:00:13.396 INFO kablam!   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 02 04:00:13.396 INFO kablam! 
Aug 02 04:00:13.396 INFO kablam! error[E0658]: The attribute `panic_implementation` is currently unknown to the compiler and may have meaning added to it in the future (see issue #29642)
Aug 02 04:00:13.396 INFO kablam!   --> tests/mbtest.rs:47:1
Aug 02 04:00:13.396 INFO kablam!    |
Aug 02 04:00:13.396 INFO kablam! 47 | #[panic_implementation]
Aug 02 04:00:13.396 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^
Aug 02 04:00:13.396 INFO kablam! 
Aug 02 04:00:13.396 INFO kablam! error: aborting due to 2 previous errors
Aug 02 04:00:13.396 INFO kablam! 
Aug 02 04:00:13.396 INFO kablam! Some errors occurred: E0554, E0658.
Aug 02 04:00:13.396 INFO kablam! For more information about an error, try `rustc --explain E0554`.
Aug 02 04:00:13.399 INFO kablam! error: Could not compile `multiboot`.
Aug 02 04:00:13.399 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 02 04:00:13.478 INFO kablam! error: build failed
Aug 02 04:00:13.480 INFO kablam! su: No module specific data is present
Aug 02 04:00:14.227 INFO running `"docker" "rm" "-f" "8cc59382032a5453944c980aa8b35aded71f3f6e6e29fada82f69be2142005c0"`
Aug 02 04:00:14.347 INFO blam! 8cc59382032a5453944c980aa8b35aded71f3f6e6e29fada82f69be2142005c0