Aug 02 12:22:35.743 INFO checking cortex-m-rt-0.3.15 against 1.27.2 for lazy_static-1
Aug 02 12:22:35.743 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 12:22:35.743 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 12:22:35.743 INFO running `"docker" "create" "-v" "/tmp/crater.OORXGiAk5cIv:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-0/1.27.2:/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 12:22:35.975 INFO blam! b944c4676d3d9307c17a68b380c9b2d00b57b82a40c2edbe69d3aeb551a31e5f
Aug 02 12:22:35.977 INFO running `"docker" "start" "-a" "b944c4676d3d9307c17a68b380c9b2d00b57b82a40c2edbe69d3aeb551a31e5f"`
Aug 02 12:22:37.138 INFO kablam!     Checking aligned v0.1.2
Aug 02 12:22:37.141 INFO kablam!     Checking bare-metal v0.1.2
Aug 02 12:22:37.153 INFO kablam!    Compiling cortex-m v0.3.1
Aug 02 12:22:37.157 INFO kablam!    Compiling num-traits v0.2.5
Aug 02 12:22:37.508 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 12:22:37.508 INFO kablam!  --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/bare-metal-0.1.2/src/lib.rs:5:35
Aug 02 12:22:37.508 INFO kablam!   |
Aug 02 12:22:37.508 INFO kablam! 5 | #![cfg_attr(feature = "const-fn", feature(const_fn, const_unsafe_cell_new))]
Aug 02 12:22:37.508 INFO kablam!   |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 02 12:22:37.508 INFO kablam! 
Aug 02 12:22:37.508 INFO kablam! error: aborting due to previous error
Aug 02 12:22:37.508 INFO kablam! 
Aug 02 12:22:37.508 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 12:22:37.516 INFO kablam! error: Could not compile `bare-metal`.
Aug 02 12:22:37.517 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 02 12:22:37.592 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 12:22:37.592 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/aligned-0.1.2/src/lib.rs:32:35
Aug 02 12:22:37.595 INFO kablam!    |
Aug 02 12:22:37.595 INFO kablam! 32 | #![cfg_attr(feature = "const-fn", feature(const_fn))]
Aug 02 12:22:37.595 INFO kablam!    |                                   ^^^^^^^^^^^^^^^^^^
Aug 02 12:22:37.595 INFO kablam! 
Aug 02 12:22:37.596 INFO kablam! error: aborting due to previous error
Aug 02 12:22:37.596 INFO kablam! 
Aug 02 12:22:37.596 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 12:22:37.602 INFO kablam! error: Could not compile `aligned`.
Aug 02 12:22:37.604 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 02 12:22:42.123 INFO kablam! error: build failed
Aug 02 12:22:42.125 INFO kablam! su: No module specific data is present
Aug 02 12:22:42.703 INFO running `"docker" "rm" "-f" "b944c4676d3d9307c17a68b380c9b2d00b57b82a40c2edbe69d3aeb551a31e5f"`
Aug 02 12:22:42.879 INFO blam! b944c4676d3d9307c17a68b380c9b2d00b57b82a40c2edbe69d3aeb551a31e5f