Aug 01 21:18:20.185 INFO checking stm32f469xx-0.2.1 against 1.27.2 for lazy_static-1
Aug 01 21:18:20.185 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 21:18:20.186 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 21:18:20.186 INFO running `"docker" "create" "-v" "/tmp/crater.E6zxvRB4d0JS:/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 21:18:20.529 INFO blam! 244dd343165841ad698730e70afb6bcd85964072b4a52297d0f42c410cc23eb7
Aug 01 21:18:20.532 INFO running `"docker" "start" "-a" "244dd343165841ad698730e70afb6bcd85964072b4a52297d0f42c410cc23eb7"`
Aug 01 21:18:21.548 INFO kablam!     Checking bare-metal v0.2.0
Aug 01 21:18:21.548 INFO kablam!     Checking aligned v0.2.0
Aug 01 21:18:21.548 INFO kablam!    Compiling stm32f469xx v0.2.1 (file:///source)
Aug 01 21:18:21.558 INFO kablam!     Checking bare-metal v0.1.2
Aug 01 21:18:21.558 INFO kablam!    Compiling cortex-m v0.5.2
Aug 01 21:18:22.400 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 01 21:18:22.400 INFO kablam!  --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/bare-metal-0.1.2/src/lib.rs:5:35
Aug 01 21:18:22.400 INFO kablam!   |
Aug 01 21:18:22.400 INFO kablam! 5 | #![cfg_attr(feature = "const-fn", feature(const_fn, const_unsafe_cell_new))]
Aug 01 21:18:22.401 INFO kablam!   |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 01 21:18:22.401 INFO kablam! 
Aug 01 21:18:22.412 INFO kablam! error: aborting due to previous error
Aug 01 21:18:22.413 INFO kablam! 
Aug 01 21:18:22.413 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 01 21:18:22.437 INFO kablam! error: Could not compile `bare-metal`.
Aug 01 21:18:22.438 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 01 21:18:24.558 INFO kablam! error: build failed
Aug 01 21:18:24.560 INFO kablam! su: No module specific data is present
Aug 01 21:18:25.554 INFO running `"docker" "rm" "-f" "244dd343165841ad698730e70afb6bcd85964072b4a52297d0f42c410cc23eb7"`
Aug 01 21:18:25.735 INFO blam! 244dd343165841ad698730e70afb6bcd85964072b4a52297d0f42c410cc23eb7