Aug 02 12:22:46.342 INFO checking cortex-m-quickstart-0.3.2 against 1.27.2 for lazy_static-1
Aug 02 12:22:46.342 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 12:22:46.342 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 12:22:46.342 INFO running `"docker" "create" "-v" "/tmp/crater.a8KG3qzfrcwo:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-7/1.27.2:/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 12:22:46.590 INFO blam! add453bc4cb8ed4dd4305ba76df3a1aea51b6f2d0413f7be76a39eb4aa02b8b0
Aug 02 12:22:46.593 INFO running `"docker" "start" "-a" "add453bc4cb8ed4dd4305ba76df3a1aea51b6f2d0413f7be76a39eb4aa02b8b0"`
Aug 02 12:22:47.946 INFO kablam!    Compiling cortex-m-quickstart v0.3.2 (file:///source)
Aug 02 12:22:47.948 INFO kablam!    Compiling cortex-m-rt v0.5.1
Aug 02 12:22:47.950 INFO kablam!     Checking panic-semihosting v0.3.0
Aug 02 12:22:48.609 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 12:22:48.609 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/panic-semihosting-0.3.0/src/lib.rs:59:1
Aug 02 12:22:48.609 INFO kablam!    |
Aug 02 12:22:48.609 INFO kablam! 59 | #![feature(panic_implementation)]
Aug 02 12:22:48.609 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 02 12:22:48.609 INFO kablam! 
Aug 02 12:22:48.610 INFO kablam! error[E0658]: The attribute `panic_implementation` is currently unknown to the compiler and may have meaning added to it in the future (see issue #29642)
Aug 02 12:22:48.611 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/panic-semihosting-0.3.0/src/lib.rs:71:1
Aug 02 12:22:48.611 INFO kablam!    |
Aug 02 12:22:48.611 INFO kablam! 71 | #[panic_implementation]
Aug 02 12:22:48.611 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^
Aug 02 12:22:48.611 INFO kablam! 
Aug 02 12:22:48.611 INFO kablam! error: aborting due to 2 previous errors
Aug 02 12:22:48.611 INFO kablam! 
Aug 02 12:22:48.611 INFO kablam! Some errors occurred: E0554, E0658.
Aug 02 12:22:48.611 INFO kablam! For more information about an error, try `rustc --explain E0554`.
Aug 02 12:22:48.619 INFO kablam! error: Could not compile `panic-semihosting`.
Aug 02 12:22:48.619 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 02 12:22:49.647 INFO kablam! error: build failed
Aug 02 12:22:49.649 INFO kablam! su: No module specific data is present
Aug 02 12:22:50.637 INFO running `"docker" "rm" "-f" "add453bc4cb8ed4dd4305ba76df3a1aea51b6f2d0413f7be76a39eb4aa02b8b0"`
Aug 02 12:22:50.838 INFO blam! add453bc4cb8ed4dd4305ba76df3a1aea51b6f2d0413f7be76a39eb4aa02b8b0