Aug 01 21:16:04.693 INFO checking stm32l151-hal-0.2.0 against 1.27.2 for lazy_static-1
Aug 01 21:16:04.693 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 21:16:04.693 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 21:16:04.693 INFO running `"docker" "create" "-v" "/tmp/crater.DNxtleLE4qEE:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-6/1.27.2:/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 21:16:04.976 INFO blam! 5343fa419852d50ac690f19a7f7b42792a1f861c6cf0dc54c3b1877b8e2078d1
Aug 01 21:16:04.979 INFO running `"docker" "start" "-a" "5343fa419852d50ac690f19a7f7b42792a1f861c6cf0dc54c3b1877b8e2078d1"`
Aug 01 21:16:06.011 INFO kablam!     Checking vcell v0.1.0
Aug 01 21:16:06.013 INFO kablam!    Compiling cortex-m v0.3.1
Aug 01 21:16:06.015 INFO kablam!    Compiling cortex-m-rt v0.4.0
Aug 01 21:16:06.020 INFO kablam!    Compiling cortex-m v0.4.3
Aug 01 21:16:06.024 INFO kablam!     Checking aligned v0.1.2
Aug 01 21:16:06.024 INFO kablam!     Checking bare-metal v0.1.2
Aug 01 21:16:06.027 INFO kablam!     Checking untagged-option v0.1.1
Aug 01 21:16:06.029 INFO kablam!     Checking r0 v0.2.2
Aug 01 21:16:06.846 INFO kablam!     Checking nb v0.1.1
Aug 01 21:16:06.885 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 01 21:16:06.885 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/aligned-0.1.2/src/lib.rs:32:35
Aug 01 21:16:06.885 INFO kablam!    |
Aug 01 21:16:06.885 INFO kablam! 32 | #![cfg_attr(feature = "const-fn", feature(const_fn))]
Aug 01 21:16:06.885 INFO kablam!    |                                   ^^^^^^^^^^^^^^^^^^
Aug 01 21:16:06.896 INFO kablam! 
Aug 01 21:16:06.899 INFO kablam! error: aborting due to previous error
Aug 01 21:16:06.908 INFO kablam! 
Aug 01 21:16:06.909 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 01 21:16:06.933 INFO kablam! error: Could not compile `aligned`.
Aug 01 21:16:06.933 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 01 21:16:06.980 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 01 21:16:06.980 INFO kablam!  --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/bare-metal-0.1.2/src/lib.rs:5:35
Aug 01 21:16:06.980 INFO kablam!   |
Aug 01 21:16:06.980 INFO kablam! 5 | #![cfg_attr(feature = "const-fn", feature(const_fn, const_unsafe_cell_new))]
Aug 01 21:16:06.980 INFO kablam!   |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 01 21:16:07.004 INFO kablam! 
Aug 01 21:16:07.005 INFO kablam! error: aborting due to previous error
Aug 01 21:16:07.005 INFO kablam! 
Aug 01 21:16:07.006 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 01 21:16:07.041 INFO kablam! error: Could not compile `bare-metal`.
Aug 01 21:16:07.041 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 01 21:16:07.550 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 01 21:16:07.550 INFO kablam!  --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/untagged-option-0.1.1/src/lib.rs:5:1
Aug 01 21:16:07.550 INFO kablam!   |
Aug 01 21:16:07.550 INFO kablam! 5 | #![feature(untagged_unions, const_fn)]
Aug 01 21:16:07.550 INFO kablam!   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 01 21:16:07.550 INFO kablam! 
Aug 01 21:16:07.551 INFO kablam! error: aborting due to previous error
Aug 01 21:16:07.552 INFO kablam! 
Aug 01 21:16:07.552 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 01 21:16:07.558 INFO kablam! error: Could not compile `untagged-option`.
Aug 01 21:16:07.558 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 01 21:16:09.459 INFO kablam! error: build failed
Aug 01 21:16:09.459 INFO kablam! su: No module specific data is present
Aug 01 21:16:09.967 INFO running `"docker" "rm" "-f" "5343fa419852d50ac690f19a7f7b42792a1f861c6cf0dc54c3b1877b8e2078d1"`
Aug 01 21:16:10.148 INFO blam! 5343fa419852d50ac690f19a7f7b42792a1f861c6cf0dc54c3b1877b8e2078d1