Aug 02 12:22:45.946 INFO checking cortex-m-quickstart-0.3.2 against 1.27.2+tmplazy for lazy_static-1
Aug 02 12:22:45.946 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 12:22:45.946 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 12:22:45.946 INFO running `"docker" "create" "-v" "/tmp/crater.JZnFAt9HC9T0:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-2/1.27.2+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 02 12:22:46.126 INFO blam! 5add1c912289a31f67556184121f0715e35c79d7fe68e3a9efdacd8a0b00eb67
Aug 02 12:22:46.128 INFO running `"docker" "start" "-a" "5add1c912289a31f67556184121f0715e35c79d7fe68e3a9efdacd8a0b00eb67"`
Aug 02 12:22:47.618 INFO kablam!     Blocking waiting for file lock on the git checkouts
Aug 02 12:22:47.789 INFO kablam!    Compiling cortex-m-quickstart v0.3.2 (file:///source)
Aug 02 12:22:47.790 INFO kablam!    Compiling cortex-m-rt v0.5.1
Aug 02 12:22:47.790 INFO kablam!     Checking panic-semihosting v0.3.0
Aug 02 12:22:48.411 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 12:22:48.411 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/panic-semihosting-0.3.0/src/lib.rs:59:1
Aug 02 12:22:48.411 INFO kablam!    |
Aug 02 12:22:48.411 INFO kablam! 59 | #![feature(panic_implementation)]
Aug 02 12:22:48.411 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 02 12:22:48.411 INFO kablam! 
Aug 02 12:22:48.411 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 12:22:48.411 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/panic-semihosting-0.3.0/src/lib.rs:71:1
Aug 02 12:22:48.411 INFO kablam!    |
Aug 02 12:22:48.411 INFO kablam! 71 | #[panic_implementation]
Aug 02 12:22:48.411 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^
Aug 02 12:22:48.411 INFO kablam! 
Aug 02 12:22:48.411 INFO kablam! error: aborting due to 2 previous errors
Aug 02 12:22:48.412 INFO kablam! 
Aug 02 12:22:48.412 INFO kablam! Some errors occurred: E0554, E0658.
Aug 02 12:22:48.412 INFO kablam! For more information about an error, try `rustc --explain E0554`.
Aug 02 12:22:48.416 INFO kablam! error: Could not compile `panic-semihosting`.
Aug 02 12:22:48.416 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 02 12:22:49.314 INFO kablam! error: build failed
Aug 02 12:22:49.315 INFO kablam! su: No module specific data is present
Aug 02 12:22:50.003 INFO running `"docker" "rm" "-f" "5add1c912289a31f67556184121f0715e35c79d7fe68e3a9efdacd8a0b00eb67"`
Aug 02 12:22:50.178 INFO blam! 5add1c912289a31f67556184121f0715e35c79d7fe68e3a9efdacd8a0b00eb67