Dec 02 03:58:59.301 INFO testing Ragnaroek/mithril against 1.30.1 for beta-1.31-5
Dec 02 03:58:59.301 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-7/1.30.1:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/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 03:58:59.731 INFO [stdout] 116d40496d4d643072e8998548c0cc6cb18cc4c5160a20a6c79b2c40f25990a9
Dec 02 03:58:59.735 INFO running `"docker" "start" "-a" "116d40496d4d643072e8998548c0cc6cb18cc4c5160a20a6c79b2c40f25990a9"`
Dec 02 03:59:01.611 INFO [stderr] usermod: no changes
Dec 02 03:59:01.871 INFO [stderr]    Compiling skein-ffi v0.0.1
Dec 02 03:59:01.871 INFO [stderr]    Compiling jh-ffi v0.0.2
Dec 02 03:59:01.871 INFO [stderr]    Compiling blake v2.0.0
Dec 02 03:59:01.875 INFO [stderr]    Compiling nom v4.1.1
Dec 02 03:59:01.875 INFO [stderr]    Compiling syn v0.15.18
Dec 02 03:59:01.875 INFO [stderr]    Compiling groestl v0.8.0
Dec 02 03:59:01.875 INFO [stderr]    Compiling serde-hjson v0.8.2
Dec 02 03:59:01.875 INFO [stderr]    Compiling env_logger v0.5.13
Dec 02 03:59:11.471 INFO [stderr] error[E0554]: #![feature] may not be used on the stable release channel
Dec 02 03:59:11.471 INFO [stderr]  --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/skein-ffi-0.0.1/src/lib.rs:2:1
Dec 02 03:59:11.471 INFO [stderr]   |
Dec 02 03:59:11.471 INFO [stderr] 2 | #![feature(libc)]
Dec 02 03:59:11.471 INFO [stderr]   | ^^^^^^^^^^^^^^^^^
Dec 02 03:59:11.471 INFO [stderr] 
Dec 02 03:59:11.475 INFO [stderr] error: aborting due to previous error
Dec 02 03:59:11.475 INFO [stderr] 
Dec 02 03:59:11.475 INFO [stderr] For more information about this error, try `rustc --explain E0554`.
Dec 02 03:59:11.507 INFO [stderr] error: Could not compile `skein-ffi`.
Dec 02 03:59:11.507 INFO [stderr] warning: build failed, waiting for other jobs to finish...
Dec 02 03:59:11.883 INFO [stderr] error[E0554]: #![feature] may not be used on the stable release channel
Dec 02 03:59:11.883 INFO [stderr]  --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/jh-ffi-0.0.2/src/lib.rs:2:1
Dec 02 03:59:11.883 INFO [stderr]   |
Dec 02 03:59:11.883 INFO [stderr] 2 | #![feature(libc)]
Dec 02 03:59:11.883 INFO [stderr]   | ^^^^^^^^^^^^^^^^^
Dec 02 03:59:11.895 INFO [stderr] 
Dec 02 03:59:11.895 INFO [stderr] error: aborting due to previous error
Dec 02 03:59:11.895 INFO [stderr] 
Dec 02 03:59:11.895 INFO [stderr] For more information about this error, try `rustc --explain E0554`.
Dec 02 03:59:11.935 INFO [stderr] error: Could not compile `jh-ffi`.
Dec 02 03:59:11.935 INFO [stderr] warning: build failed, waiting for other jobs to finish...
Dec 02 03:59:28.423 INFO [stderr] error: build failed
Dec 02 03:59:28.429 INFO [stderr] su: No module specific data is present
Dec 02 03:59:29.231 INFO running `"docker" "inspect" "116d40496d4d643072e8998548c0cc6cb18cc4c5160a20a6c79b2c40f25990a9"`
Dec 02 03:59:29.523 INFO running `"docker" "rm" "-f" "116d40496d4d643072e8998548c0cc6cb18cc4c5160a20a6c79b2c40f25990a9"`
Dec 02 03:59:29.846 INFO [stdout] 116d40496d4d643072e8998548c0cc6cb18cc4c5160a20a6c79b2c40f25990a9