Aug 01 21:20:18.488 INFO checking stm32f103xx-0.7.5 against 1.27.2+tmplazy for lazy_static-1
Aug 01 21:20:18.488 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 21:20:18.489 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 21:20:18.489 INFO running `"docker" "create" "-v" "/tmp/crater.oB4PTl4dPlY9:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-1/1.27.2+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 21:20:18.836 INFO blam! 6a3e11d23dcad10a21f8d64b3bfba7e8dcce172043eab42f5de3ff011a86002d
Aug 01 21:20:18.837 INFO running `"docker" "start" "-a" "6a3e11d23dcad10a21f8d64b3bfba7e8dcce172043eab42f5de3ff011a86002d"`
Aug 01 21:20:20.210 INFO kablam!    Compiling cortex-m v0.3.1
Aug 01 21:20:20.212 INFO kablam!     Checking aligned v0.1.2
Aug 01 21:20:20.214 INFO kablam!     Checking bare-metal v0.1.2
Aug 01 21:20:20.664 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 01 21:20:20.664 INFO kablam!  --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/bare-metal-0.1.2/src/lib.rs:5:35
Aug 01 21:20:20.664 INFO kablam!   |
Aug 01 21:20:20.664 INFO kablam! 5 | #![cfg_attr(feature = "const-fn", feature(const_fn, const_unsafe_cell_new))]
Aug 01 21:20:20.664 INFO kablam!   |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 01 21:20:20.664 INFO kablam! 
Aug 01 21:20:20.665 INFO kablam! error: aborting due to previous error
Aug 01 21:20:20.665 INFO kablam! 
Aug 01 21:20:20.665 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 01 21:20:20.669 INFO kablam! error: Could not compile `bare-metal`.
Aug 01 21:20:20.670 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 01 21:20:20.815 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 01 21:20:20.815 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/aligned-0.1.2/src/lib.rs:32:35
Aug 01 21:20:20.815 INFO kablam!    |
Aug 01 21:20:20.815 INFO kablam! 32 | #![cfg_attr(feature = "const-fn", feature(const_fn))]
Aug 01 21:20:20.815 INFO kablam!    |                                   ^^^^^^^^^^^^^^^^^^
Aug 01 21:20:20.819 INFO kablam! 
Aug 01 21:20:20.827 INFO kablam! error: aborting due to previous error
Aug 01 21:20:20.827 INFO kablam! 
Aug 01 21:20:20.827 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 01 21:20:20.834 INFO kablam! error: Could not compile `aligned`.
Aug 01 21:20:20.834 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 01 21:20:22.516 INFO kablam! error: build failed
Aug 01 21:20:22.519 INFO kablam! su: No module specific data is present
Aug 01 21:20:23.476 INFO running `"docker" "rm" "-f" "6a3e11d23dcad10a21f8d64b3bfba7e8dcce172043eab42f5de3ff011a86002d"`
Aug 01 21:20:23.660 INFO blam! 6a3e11d23dcad10a21f8d64b3bfba7e8dcce172043eab42f5de3ff011a86002d