Aug 01 21:18:39.026 INFO checking stm32f439-hal-0.1.0 against 1.27.2 for lazy_static-1
Aug 01 21:18:39.026 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 21:18:39.026 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 21:18:39.027 INFO running `"docker" "create" "-v" "/tmp/crater.dfQNz8RT3hIe:/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 01 21:18:39.283 INFO blam! 2a3d8f1e9a4bf163cb3ba1337b7452dd2d46a01f63fa391f9196b5a60c3989fd
Aug 01 21:18:39.285 INFO running `"docker" "start" "-a" "2a3d8f1e9a4bf163cb3ba1337b7452dd2d46a01f63fa391f9196b5a60c3989fd"`
Aug 01 21:18:40.154 INFO kablam!     Checking aligned v0.1.2
Aug 01 21:18:40.157 INFO kablam!     Checking untagged-option v0.1.1
Aug 01 21:18:40.158 INFO kablam!     Checking bare-metal v0.1.2
Aug 01 21:18:40.160 INFO kablam!     Checking nb v0.1.1
Aug 01 21:18:40.377 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 01 21:18:40.377 INFO kablam!  --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/bare-metal-0.1.2/src/lib.rs:5:35
Aug 01 21:18:40.377 INFO kablam!   |
Aug 01 21:18:40.377 INFO kablam! 5 | #![cfg_attr(feature = "const-fn", feature(const_fn, const_unsafe_cell_new))]
Aug 01 21:18:40.377 INFO kablam!   |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 01 21:18:40.377 INFO kablam! 
Aug 01 21:18:40.378 INFO kablam! error: aborting due to previous error
Aug 01 21:18:40.378 INFO kablam! 
Aug 01 21:18:40.379 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 01 21:18:40.384 INFO kablam! error: Could not compile `bare-metal`.
Aug 01 21:18:40.384 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 01 21:18:40.463 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 01 21:18:40.463 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/aligned-0.1.2/src/lib.rs:32:35
Aug 01 21:18:40.463 INFO kablam!    |
Aug 01 21:18:40.464 INFO kablam! 32 | #![cfg_attr(feature = "const-fn", feature(const_fn))]
Aug 01 21:18:40.464 INFO kablam!    |                                   ^^^^^^^^^^^^^^^^^^
Aug 01 21:18:40.464 INFO kablam! 
Aug 01 21:18:40.483 INFO kablam! error: aborting due to previous error
Aug 01 21:18:40.488 INFO kablam! 
Aug 01 21:18:40.500 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 01 21:18:40.525 INFO kablam! error: Could not compile `aligned`.
Aug 01 21:18:40.525 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 01 21:18:40.558 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 01 21:18:40.558 INFO kablam!  --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/untagged-option-0.1.1/src/lib.rs:5:1
Aug 01 21:18:40.558 INFO kablam!   |
Aug 01 21:18:40.558 INFO kablam! 5 | #![feature(untagged_unions, const_fn)]
Aug 01 21:18:40.558 INFO kablam!   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 01 21:18:40.558 INFO kablam! 
Aug 01 21:18:40.559 INFO kablam! error: aborting due to previous error
Aug 01 21:18:40.560 INFO kablam! 
Aug 01 21:18:40.560 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 01 21:18:40.583 INFO kablam! error: Could not compile `untagged-option`.
Aug 01 21:18:40.584 INFO kablam! 
Aug 01 21:18:40.584 INFO kablam! To learn more, run the command again with --verbose.
Aug 01 21:18:40.586 INFO kablam! su: No module specific data is present
Aug 01 21:18:42.185 INFO running `"docker" "rm" "-f" "2a3d8f1e9a4bf163cb3ba1337b7452dd2d46a01f63fa391f9196b5a60c3989fd"`
Aug 01 21:18:42.598 INFO blam! 2a3d8f1e9a4bf163cb3ba1337b7452dd2d46a01f63fa391f9196b5a60c3989fd