Aug 01 21:21:37.531 INFO checking stm32f042-hal-0.4.2 against 1.27.2+tmplazy for lazy_static-1
Aug 01 21:21:37.531 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 21:21:37.531 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 21:21:37.531 INFO running `"docker" "create" "-v" "/tmp/crater.p9YLbas8WLEg:/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 01 21:21:37.803 INFO blam! 06fc4780f88e193cd732e81266a45294643b46a96a938f490b50cdcc4e38064c
Aug 01 21:21:37.806 INFO running `"docker" "start" "-a" "06fc4780f88e193cd732e81266a45294643b46a96a938f490b50cdcc4e38064c"`
Aug 01 21:21:39.108 INFO kablam!     Checking bare-metal v0.2.0
Aug 01 21:21:39.108 INFO kablam!    Compiling stm32f042 v0.6.1
Aug 01 21:21:39.108 INFO kablam!     Checking panic-abort v0.2.0
Aug 01 21:21:39.108 INFO kablam!     Checking cast v0.2.2
Aug 01 21:21:39.110 INFO kablam!    Compiling cortex-m-rt v0.5.1
Aug 01 21:21:39.120 INFO kablam!     Checking embedded-hal v0.2.1
Aug 01 21:21:40.005 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 01 21:21:40.005 INFO kablam!  --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/bare-metal-0.2.0/src/lib.rs:5:35
Aug 01 21:21:40.005 INFO kablam!   |
Aug 01 21:21:40.005 INFO kablam! 5 | #![cfg_attr(feature = "const-fn", feature(const_fn, const_unsafe_cell_new))]
Aug 01 21:21:40.005 INFO kablam!   |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 01 21:21:40.016 INFO kablam! 
Aug 01 21:21:40.017 INFO kablam! error: aborting due to previous error
Aug 01 21:21:40.017 INFO kablam! 
Aug 01 21:21:40.018 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 01 21:21:40.040 INFO kablam! error:error[E0554]: #![feature] may not be used on the stable release channel
Aug 01 21:21:40.040 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/panic-abort-0.2.0/src/lib.rs:21:1
Aug 01 21:21:40.040 INFO kablam!    |
Aug 01 21:21:40.040 INFO kablam! 21 | #![feature(core_intrinsics)]
Aug 01 21:21:40.040 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 01 21:21:40.044 INFO kablam!  Could not compile `bare-metal`.
Aug 01 21:21:40.044 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 01 21:21:40.044 INFO kablam! 
Aug 01 21:21:40.045 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 01 21:21:40.045 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/panic-abort-0.2.0/src/lib.rs:22:1
Aug 01 21:21:40.045 INFO kablam!    |
Aug 01 21:21:40.045 INFO kablam! 22 | #![feature(panic_implementation)]
Aug 01 21:21:40.045 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 01 21:21:40.045 INFO kablam! 
Aug 01 21:21:40.045 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 01 21:21:40.045 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/panic-abort-0.2.0/src/lib.rs:28:1
Aug 01 21:21:40.045 INFO kablam!    |
Aug 01 21:21:40.045 INFO kablam! 28 | #[panic_implementation]
Aug 01 21:21:40.045 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^
Aug 01 21:21:40.045 INFO kablam! 
Aug 01 21:21:40.045 INFO kablam! error: aborting due to 3 previous errors
Aug 01 21:21:40.046 INFO kablam! 
Aug 01 21:21:40.046 INFO kablam! Some errors occurred: E0554, E0658.
Aug 01 21:21:40.046 INFO kablam! For more information about an error, try `rustc --explain E0554`.
Aug 01 21:21:40.073 INFO kablam! error: Could not compile `panic-abort`.
Aug 01 21:21:40.073 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 01 21:21:42.547 INFO kablam! error: build failed
Aug 01 21:21:42.549 INFO kablam! su: No module specific data is present
Aug 01 21:21:43.057 INFO running `"docker" "rm" "-f" "06fc4780f88e193cd732e81266a45294643b46a96a938f490b50cdcc4e38064c"`
Aug 01 21:21:43.238 INFO blam! 06fc4780f88e193cd732e81266a45294643b46a96a938f490b50cdcc4e38064c