Dec 02 15:22:15.071 INFO testing stm32f103xx-0.8.1 against 1.30.1 for beta-1.31-5
Dec 02 15:22:15.071 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-4/1.30.1:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/beta-1.31-5/1.30.1:/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 +1.30.1 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 15:22:15.300 INFO [stdout] 85366b551af1862851cbd7d6bff6a8460a6bc1a0d3e9d7537f613157254d4b97
Dec 02 15:22:15.305 INFO running `"docker" "start" "-a" "85366b551af1862851cbd7d6bff6a8460a6bc1a0d3e9d7537f613157254d4b97"`
Dec 02 15:22:15.767 INFO [stderr] usermod: no changes
Dec 02 15:22:15.821 INFO [stderr]    Compiling bare-metal v0.1.3
Dec 02 15:22:15.822 INFO [stderr]    Compiling aligned v0.1.2
Dec 02 15:22:15.822 INFO [stderr]    Compiling untagged-option v0.1.1
Dec 02 15:22:15.822 INFO [stderr]    Compiling cortex-m v0.4.3
Dec 02 15:22:15.907 INFO [stderr] error[E0554]: #![feature] may not be used on the stable release channel
Dec 02 15:22:15.908 INFO [stderr]  --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/bare-metal-0.1.3/src/lib.rs:5:35
Dec 02 15:22:15.908 INFO [stderr]   |
Dec 02 15:22:15.908 INFO [stderr] 5 | #![cfg_attr(feature = "const-fn", feature(const_fn))]
Dec 02 15:22:15.909 INFO [stderr]   |                                   ^^^^^^^^^^^^^^^^^^
Dec 02 15:22:15.909 INFO [stderr] error[E0554]: #![feature] may not be used on the stable release channel
Dec 02 15:22:15.909 INFO [stderr]  --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/untagged-option-0.1.1/src/lib.rs:5:1
Dec 02 15:22:15.909 INFO [stderr]   |
Dec 02 15:22:15.910 INFO [stderr] 5 | #![feature(untagged_unions, const_fn)]
Dec 02 15:22:15.910 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 15:22:15.910 INFO [stderr] 
Dec 02 15:22:15.910 INFO [stderr] error: aborting due to previous error
Dec 02 15:22:15.911 INFO [stderr] 
Dec 02 15:22:15.911 INFO [stderr] For more information about this error, try `rustc --explain E0554`.
Dec 02 15:22:15.911 INFO [stderr] 
Dec 02 15:22:15.913 INFO [stderr] error: aborting due to previous error
Dec 02 15:22:15.913 INFO [stderr] 
Dec 02 15:22:15.913 INFO [stderr] For more information about this error, try `rustc --explain E0554`.
Dec 02 15:22:15.921 INFO [stderr] error: Could not compile `bare-metal`.
Dec 02 15:22:15.921 INFO [stderr] warning: build failed, waiting for other jobs to finish...
Dec 02 15:22:15.922 INFO [stderr] error: Could not compile `untagged-option`.
Dec 02 15:22:15.923 INFO [stderr] warning: build failed, waiting for other jobs to finish...
Dec 02 15:22:15.934 INFO [stderr] error[E0554]: #![feature] may not be used on the stable release channel
Dec 02 15:22:15.935 INFO [stderr]   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/aligned-0.1.2/src/lib.rs:32:35
Dec 02 15:22:15.935 INFO [stderr]    |
Dec 02 15:22:15.935 INFO [stderr] 32 | #![cfg_attr(feature = "const-fn", feature(const_fn))]
Dec 02 15:22:15.936 INFO [stderr]    |                                   ^^^^^^^^^^^^^^^^^^
Dec 02 15:22:15.936 INFO [stderr] 
Dec 02 15:22:15.936 INFO [stderr] error: aborting due to previous error
Dec 02 15:22:15.936 INFO [stderr] 
Dec 02 15:22:15.937 INFO [stderr] For more information about this error, try `rustc --explain E0554`.
Dec 02 15:22:15.940 INFO [stderr] error: Could not compile `aligned`.
Dec 02 15:22:15.940 INFO [stderr] 
Dec 02 15:22:15.940 INFO [stderr] To learn more, run the command again with --verbose.
Dec 02 15:22:15.941 INFO [stderr] su: No module specific data is present
Dec 02 15:22:16.639 INFO running `"docker" "inspect" "85366b551af1862851cbd7d6bff6a8460a6bc1a0d3e9d7537f613157254d4b97"`
Dec 02 15:22:16.748 INFO running `"docker" "rm" "-f" "85366b551af1862851cbd7d6bff6a8460a6bc1a0d3e9d7537f613157254d4b97"`
Dec 02 15:22:16.849 INFO [stdout] 85366b551af1862851cbd7d6bff6a8460a6bc1a0d3e9d7537f613157254d4b97