Dec 02 03:58:49.225 INFO testing Ragnaroek/mithril against master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61 for beta-1.31-5
Dec 02 03:58:49.225 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-6/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/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 03:58:49.715 INFO [stdout] 007b98a068398e4de8e09cfeaab2620316092d2edc1e47f23cc0c5b1c7144dd9
Dec 02 03:58:49.717 INFO running `"docker" "start" "-a" "007b98a068398e4de8e09cfeaab2620316092d2edc1e47f23cc0c5b1c7144dd9"`
Dec 02 03:58:51.418 INFO [stderr] usermod: no changes
Dec 02 03:58:51.731 INFO [stderr]    Compiling jh-ffi v0.0.2
Dec 02 03:58:51.739 INFO [stderr]    Compiling skein-ffi v0.0.1
Dec 02 03:58:51.740 INFO [stderr]    Compiling blake v2.0.0
Dec 02 03:58:51.743 INFO [stderr]    Compiling tiny-keccak v1.4.2
Dec 02 03:58:51.744 INFO [stderr]    Compiling syn v0.15.18
Dec 02 03:58:51.746 INFO [stderr]    Compiling groestl v0.8.0
Dec 02 03:58:51.751 INFO [stderr]    Compiling serde-hjson v0.8.2
Dec 02 03:58:59.307 INFO [stderr] error[E0554]: #![feature] may not be used on the beta release channel
Dec 02 03:58:59.307 INFO [stderr]  --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/skein-ffi-0.0.1/src/lib.rs:2:1
Dec 02 03:58:59.307 INFO [stderr]   |
Dec 02 03:58:59.307 INFO [stderr] 2 | #![feature(libc)]
Dec 02 03:58:59.307 INFO [stderr]   | ^^^^^^^^^^^^^^^^^
Dec 02 03:58:59.307 INFO [stderr] 
Dec 02 03:58:59.307 INFO [stderr] error: aborting due to previous error
Dec 02 03:58:59.307 INFO [stderr] 
Dec 02 03:58:59.307 INFO [stderr] For more information about this error, try `rustc --explain E0554`.
Dec 02 03:58:59.328 INFO [stderr] error: Could not compile `skein-ffi`.
Dec 02 03:58:59.331 INFO [stderr] warning: build failed, waiting for other jobs to finish...
Dec 02 03:58:59.573 INFO [stderr] error[E0554]: #![feature] may not be used on the beta release channel
Dec 02 03:58:59.573 INFO [stderr]  --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/jh-ffi-0.0.2/src/lib.rs:2:1
Dec 02 03:58:59.573 INFO [stderr]   |
Dec 02 03:58:59.573 INFO [stderr] 2 | #![feature(libc)]
Dec 02 03:58:59.573 INFO [stderr]   | ^^^^^^^^^^^^^^^^^
Dec 02 03:58:59.573 INFO [stderr] 
Dec 02 03:58:59.583 INFO [stderr] error: aborting due to previous error
Dec 02 03:58:59.583 INFO [stderr] 
Dec 02 03:58:59.583 INFO [stderr] For more information about this error, try `rustc --explain E0554`.
Dec 02 03:58:59.611 INFO [stderr] error: Could not compile `jh-ffi`.
Dec 02 03:58:59.611 INFO [stderr] warning: build failed, waiting for other jobs to finish...
Dec 02 03:59:15.576 INFO [stderr] error: build failed
Dec 02 03:59:15.578 INFO [stderr] su: No module specific data is present
Dec 02 03:59:16.917 INFO running `"docker" "inspect" "007b98a068398e4de8e09cfeaab2620316092d2edc1e47f23cc0c5b1c7144dd9"`
Dec 02 03:59:17.189 INFO running `"docker" "rm" "-f" "007b98a068398e4de8e09cfeaab2620316092d2edc1e47f23cc0c5b1c7144dd9"`
Dec 02 03:59:17.535 INFO [stdout] 007b98a068398e4de8e09cfeaab2620316092d2edc1e47f23cc0c5b1c7144dd9