Aug 02 09:46:13.145 INFO checking frdm-kw41z-0.1.1 against 1.27.2 for lazy_static-1
Aug 02 09:46:13.145 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 09:46:13.145 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 09:46:13.145 INFO running `"docker" "create" "-v" "/tmp/crater.nnib0R3pBux0:/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 02 09:46:13.338 INFO blam! 222b0670ff3d17dc11d8605c857a31db607c2f6a990aac49453d79e01465220b
Aug 02 09:46:13.340 INFO running `"docker" "start" "-a" "222b0670ff3d17dc11d8605c857a31db607c2f6a990aac49453d79e01465220b"`
Aug 02 09:46:14.961 INFO kablam!    Compiling cortex-m v0.3.1
Aug 02 09:46:14.962 INFO kablam!    Compiling cortex-m v0.4.3
Aug 02 09:46:14.963 INFO kablam!     Checking aligned v0.1.2
Aug 02 09:46:14.963 INFO kablam!    Compiling cortex-m-rt v0.4.0
Aug 02 09:46:14.963 INFO kablam!     Checking bare-metal v0.1.2
Aug 02 09:46:14.963 INFO kablam!     Checking void v1.0.2
Aug 02 09:46:14.963 INFO kablam!     Checking r0 v0.2.2
Aug 02 09:46:14.963 INFO kablam!     Checking nb v0.1.1
Aug 02 09:46:15.709 INFO kablam!     Checking untagged-option v0.1.1
Aug 02 09:46:16.309 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 09:46:16.309 INFO kablam!  --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/bare-metal-0.1.2/src/lib.rs:5:35
Aug 02 09:46:16.309 INFO kablam!   |
Aug 02 09:46:16.309 INFO kablam! 5 | #![cfg_attr(feature = "const-fn", feature(const_fn, const_unsafe_cell_new))]
Aug 02 09:46:16.310 INFO kablam!   |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 02 09:46:16.310 INFO kablam! 
Aug 02 09:46:16.310 INFO kablam! error: aborting due to previous error
Aug 02 09:46:16.310 INFO kablam! 
Aug 02 09:46:16.310 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 09:46:16.354 INFO kablam! error: Could not compile `bare-metal`.
Aug 02 09:46:16.354 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 02 09:46:16.541 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 09:46:16.542 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/aligned-0.1.2/src/lib.rs:32:35
Aug 02 09:46:16.542 INFO kablam!    |
Aug 02 09:46:16.542 INFO kablam! 32 | #![cfg_attr(feature = "const-fn", feature(const_fn))]
Aug 02 09:46:16.542 INFO kablam!    |                                   ^^^^^^^^^^^^^^^^^^
Aug 02 09:46:16.543 INFO kablam! 
Aug 02 09:46:16.550 INFO kablam! error: aborting due to previous error
Aug 02 09:46:16.568 INFO kablam! 
Aug 02 09:46:16.569 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 09:46:16.577 INFO kablam! error: Could not compile `aligned`.
Aug 02 09:46:16.577 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 02 09:46:16.826 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 09:46:16.826 INFO kablam!  --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/untagged-option-0.1.1/src/lib.rs:5:1
Aug 02 09:46:16.826 INFO kablam!   |
Aug 02 09:46:16.826 INFO kablam! 5 | #![feature(untagged_unions, const_fn)]
Aug 02 09:46:16.826 INFO kablam!   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 02 09:46:16.827 INFO kablam! 
Aug 02 09:46:16.828 INFO kablam! error: aborting due to previous error
Aug 02 09:46:16.828 INFO kablam! 
Aug 02 09:46:16.828 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 09:46:16.840 INFO kablam! error: Could not compile `untagged-option`.
Aug 02 09:46:16.841 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 02 09:46:19.476 INFO kablam! error: build failed
Aug 02 09:46:19.484 INFO kablam! su: No module specific data is present
Aug 02 09:46:20.210 INFO running `"docker" "rm" "-f" "222b0670ff3d17dc11d8605c857a31db607c2f6a990aac49453d79e01465220b"`
Aug 02 09:46:20.388 INFO blam! 222b0670ff3d17dc11d8605c857a31db607c2f6a990aac49453d79e01465220b