Dec 02 15:22:13.219 INFO testing stm32f103xx-0.8.1 against master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61 for beta-1.31-5
Dec 02 15:22:13.219 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-2/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/beta-1.31-5/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +8940af3cea4a9a9deabcaf843b2f8cad9a83fc61-alt build --frozen" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 02 15:22:13.564 INFO [stdout] 6c02ee12f70595f135f5de7baa39b6f9a33700159e9df5f02445e989e30f7079
Dec 02 15:22:13.566 INFO running `"docker" "start" "-a" "6c02ee12f70595f135f5de7baa39b6f9a33700159e9df5f02445e989e30f7079"`
Dec 02 15:22:14.234 INFO [stderr] usermod: no changes
Dec 02 15:22:14.382 INFO [stderr]    Compiling aligned v0.1.2
Dec 02 15:22:14.382 INFO [stderr]    Compiling bare-metal v0.1.3
Dec 02 15:22:14.382 INFO [stderr]    Compiling untagged-option v0.1.1
Dec 02 15:22:14.391 INFO [stderr]    Compiling cortex-m v0.4.3
Dec 02 15:22:14.546 INFO [stderr] error[E0554]: #![feature] may not be used on the beta release channel
Dec 02 15:22:14.546 INFO [stderr]  --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/bare-metal-0.1.3/src/lib.rs:5:35
Dec 02 15:22:14.546 INFO [stderr]   |
Dec 02 15:22:14.546 INFO [stderr] 5 | #![cfg_attr(feature = "const-fn", feature(const_fn))]
Dec 02 15:22:14.546 INFO [stderr]   |                                   ^^^^^^^^^^^^^^^^^
Dec 02 15:22:14.546 INFO [stderr] 
Dec 02 15:22:14.560 INFO [stderr] error: aborting due to previous error
Dec 02 15:22:14.560 INFO [stderr] 
Dec 02 15:22:14.560 INFO [stderr] For more information about this error, try `rustc --explain E0554`.
Dec 02 15:22:14.562 INFO [stderr] error: Could not compile `bare-metal`.
Dec 02 15:22:14.562 INFO [stderr] warning: build failed, waiting for other jobs to finish...
Dec 02 15:22:14.562 INFO [stderr] error[E0554]: #![feature] may not be used on the beta release channel
Dec 02 15:22:14.562 INFO [stderr]  --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/untagged-option-0.1.1/src/lib.rs:5:1
Dec 02 15:22:14.562 INFO [stderr]   |
Dec 02 15:22:14.562 INFO [stderr] 5 | #![feature(untagged_unions, const_fn)]
Dec 02 15:22:14.562 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 15:22:14.562 INFO [stderr] 
Dec 02 15:22:14.566 INFO [stderr] error: aborting due to previous error
Dec 02 15:22:14.566 INFO [stderr] 
Dec 02 15:22:14.566 INFO [stderr] For more information about this error, try `rustc --explain E0554`.
Dec 02 15:22:14.566 INFO [stderr] error: Could not compile `untagged-option`.
Dec 02 15:22:14.566 INFO [stderr] warning: build failed, waiting for other jobs to finish...
Dec 02 15:22:14.574 INFO [stderr] error[E0554]: #![feature] may not be used on the beta release channel
Dec 02 15:22:14.574 INFO [stderr]   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/aligned-0.1.2/src/lib.rs:32:35
Dec 02 15:22:14.574 INFO [stderr]    |
Dec 02 15:22:14.574 INFO [stderr] 32 | #![cfg_attr(feature = "const-fn", feature(const_fn))]
Dec 02 15:22:14.574 INFO [stderr]    |                                   ^^^^^^^^^^^^^^^^^
Dec 02 15:22:14.574 INFO [stderr] 
Dec 02 15:22:14.575 INFO [stderr] error: aborting due to previous error
Dec 02 15:22:14.575 INFO [stderr] 
Dec 02 15:22:14.575 INFO [stderr] For more information about this error, try `rustc --explain E0554`.
Dec 02 15:22:14.581 INFO [stderr] error: Could not compile `aligned`.
Dec 02 15:22:14.581 INFO [stderr] 
Dec 02 15:22:14.581 INFO [stderr] To learn more, run the command again with --verbose.
Dec 02 15:22:14.582 INFO [stderr] su: No module specific data is present
Dec 02 15:22:14.917 INFO running `"docker" "inspect" "6c02ee12f70595f135f5de7baa39b6f9a33700159e9df5f02445e989e30f7079"`
Dec 02 15:22:15.032 INFO running `"docker" "rm" "-f" "6c02ee12f70595f135f5de7baa39b6f9a33700159e9df5f02445e989e30f7079"`
Dec 02 15:22:15.159 INFO [stdout] 6c02ee12f70595f135f5de7baa39b6f9a33700159e9df5f02445e989e30f7079