Aug 01 21:18:36.306 INFO checking stm32f439-hal-0.1.0 against 1.27.2+tmplazy for lazy_static-1
Aug 01 21:18:36.306 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 21:18:36.306 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 21:18:36.307 INFO running `"docker" "create" "-v" "/tmp/crater.TnleKzNX4iDH:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-7/1.27.2+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 21:18:36.606 INFO blam! 09a88fd04011c32326f42ccc69e7006ebc4be01793098510e1675e3a68b699bb
Aug 01 21:18:36.614 INFO running `"docker" "start" "-a" "09a88fd04011c32326f42ccc69e7006ebc4be01793098510e1675e3a68b699bb"`
Aug 01 21:18:37.974 INFO kablam!     Checking bare-metal v0.1.2
Aug 01 21:18:37.974 INFO kablam!     Checking nb v0.1.1
Aug 01 21:18:37.974 INFO kablam!     Checking untagged-option v0.1.1
Aug 01 21:18:37.974 INFO kablam!     Checking aligned v0.1.2
Aug 01 21:18:38.270 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 01 21:18:38.270 INFO kablam!  --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/untagged-option-0.1.1/src/lib.rs:5:1
Aug 01 21:18:38.270 INFO kablam!   |
Aug 01 21:18:38.270 INFO kablam! 5 | #![feature(untagged_unions, const_fn)]
Aug 01 21:18:38.270 INFO kablam!   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 01 21:18:38.271 INFO kablam! 
Aug 01 21:18:38.272 INFO kablam! error: aborting due to previous error
Aug 01 21:18:38.272 INFO kablam! 
Aug 01 21:18:38.272 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 01 21:18:38.278 INFO kablam! error: Could not compile `untagged-option`.
Aug 01 21:18:38.279 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 01 21:18:38.366 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 01 21:18:38.366 INFO kablam!  --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/bare-metal-0.1.2/src/lib.rs:5:35
Aug 01 21:18:38.366 INFO kablam!   |
Aug 01 21:18:38.366 INFO kablam! 5 | #![cfg_attr(feature = "const-fn", feature(const_fn, const_unsafe_cell_new))]
Aug 01 21:18:38.366 INFO kablam!   |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 01 21:18:38.366 INFO kablam! 
Aug 01 21:18:38.366 INFO kablam! error: aborting due to previous error
Aug 01 21:18:38.367 INFO kablam! 
Aug 01 21:18:38.367 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 01 21:18:38.373 INFO kablam! error: Could not compile `bare-metal`.
Aug 01 21:18:38.373 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 01 21:18:38.417 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 01 21:18:38.417 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/aligned-0.1.2/src/lib.rs:32:35
Aug 01 21:18:38.417 INFO kablam!    |
Aug 01 21:18:38.417 INFO kablam! 32 | #![cfg_attr(feature = "const-fn", feature(const_fn))]
Aug 01 21:18:38.417 INFO kablam!    |                                   ^^^^^^^^^^^^^^^^^^
Aug 01 21:18:38.417 INFO kablam! 
Aug 01 21:18:38.417 INFO kablam! error: aborting due to previous error
Aug 01 21:18:38.417 INFO kablam! 
Aug 01 21:18:38.417 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 01 21:18:38.422 INFO kablam! error: Could not compile `aligned`.
Aug 01 21:18:38.422 INFO kablam! 
Aug 01 21:18:38.422 INFO kablam! To learn more, run the command again with --verbose.
Aug 01 21:18:38.423 INFO kablam! su: No module specific data is present
Aug 01 21:18:39.100 INFO running `"docker" "rm" "-f" "09a88fd04011c32326f42ccc69e7006ebc4be01793098510e1675e3a68b699bb"`
Aug 01 21:18:39.250 INFO blam! 09a88fd04011c32326f42ccc69e7006ebc4be01793098510e1675e3a68b699bb