Aug 01 21:18:57.778 INFO checking stm32f411xx-0.0.1 against 1.27.2+tmplazy for lazy_static-1
Aug 01 21:18:57.778 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 21:18:57.781 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 21:18:57.781 INFO running `"docker" "create" "-v" "/tmp/crater.sDR5U0mSbf5e:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-5/1.27.2+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 01 21:18:57.998 INFO blam! 15ed0bbfce1db713d8c0d0bea0e828e87d1bb508517431506e3acc1f3513c32c
Aug 01 21:18:58.000 INFO running `"docker" "start" "-a" "15ed0bbfce1db713d8c0d0bea0e828e87d1bb508517431506e3acc1f3513c32c"`
Aug 01 21:18:59.415 INFO kablam!     Checking bare-metal v0.1.2
Aug 01 21:18:59.417 INFO kablam!     Checking untagged-option v0.1.1
Aug 01 21:18:59.417 INFO kablam!     Checking aligned v0.1.2
Aug 01 21:18:59.417 INFO kablam!    Compiling cortex-m v0.4.3
Aug 01 21:18:59.627 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 01 21:18:59.627 INFO kablam!  --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/bare-metal-0.1.2/src/lib.rs:5:35
Aug 01 21:18:59.627 INFO kablam!   |
Aug 01 21:18:59.627 INFO kablam! 5 | #![cfg_attr(feature = "const-fn", feature(const_fn, const_unsafe_cell_new))]
Aug 01 21:18:59.627 INFO kablam!   |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 01 21:18:59.628 INFO kablam! 
Aug 01 21:18:59.629 INFO kablam! error: aborting due to previous error
Aug 01 21:18:59.630 INFO kablam! 
Aug 01 21:18:59.630 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 01 21:18:59.635 INFO kablam! error: Could not compile `bare-metal`.
Aug 01 21:18:59.635 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 01 21:18:59.678 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 01 21:18:59.679 INFO kablam!  --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/untagged-option-0.1.1/src/lib.rs:5:1
Aug 01 21:18:59.679 INFO kablam!   |
Aug 01 21:18:59.679 INFO kablam! 5 | #![feature(untagged_unions, const_fn)]
Aug 01 21:18:59.679 INFO kablam!   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 01 21:18:59.679 INFO kablam! 
Aug 01 21:18:59.680 INFO kablam! error: aborting due to previous error
Aug 01 21:18:59.680 INFO kablam! 
Aug 01 21:18:59.680 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 01 21:18:59.685 INFO kablam! error: Could not compile `untagged-option`.
Aug 01 21:18:59.685 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 01 21:18:59.728 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 01 21:18:59.728 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/aligned-0.1.2/src/lib.rs:32:35
Aug 01 21:18:59.728 INFO kablam!    |
Aug 01 21:18:59.728 INFO kablam! 32 | #![cfg_attr(feature = "const-fn", feature(const_fn))]
Aug 01 21:18:59.729 INFO kablam!    |                                   ^^^^^^^^^^^^^^^^^^
Aug 01 21:18:59.729 INFO kablam! 
Aug 01 21:18:59.730 INFO kablam! error: aborting due to previous error
Aug 01 21:18:59.733 INFO kablam! 
Aug 01 21:18:59.733 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 01 21:18:59.736 INFO kablam! error: Could not compile `aligned`.
Aug 01 21:18:59.736 INFO kablam! 
Aug 01 21:18:59.736 INFO kablam! To learn more, run the command again with --verbose.
Aug 01 21:18:59.738 INFO kablam! su: No module specific data is present
Aug 01 21:19:00.619 INFO running `"docker" "rm" "-f" "15ed0bbfce1db713d8c0d0bea0e828e87d1bb508517431506e3acc1f3513c32c"`
Aug 01 21:19:00.810 INFO blam! 15ed0bbfce1db713d8c0d0bea0e828e87d1bb508517431506e3acc1f3513c32c