Dec 02 20:16:24.598 INFO testing riker-patterns-0.1.8 against master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61 for beta-1.31-5
Dec 02 20:16:24.598 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 20:16:24.988 INFO [stdout] d0aee5ddc625aa3be218006613a7c6ff0112b920d71654d137ef468a2c382caa
Dec 02 20:16:24.990 INFO running `"docker" "start" "-a" "d0aee5ddc625aa3be218006613a7c6ff0112b920d71654d137ef468a2c382caa"`
Dec 02 20:16:26.219 INFO [stderr] usermod: no changes
Dec 02 20:16:26.363 INFO [stderr]    Compiling futures-core-preview v0.2.3
Dec 02 20:16:26.369 INFO [stderr]    Compiling serde-hjson v0.8.2
Dec 02 20:16:27.640 INFO [stderr]    Compiling futures-channel-preview v0.2.2
Dec 02 20:16:27.640 INFO [stderr]    Compiling futures-io-preview v0.2.2
Dec 02 20:16:28.690 INFO [stderr]    Compiling futures-sink-preview v0.2.2
Dec 02 20:16:29.667 INFO [stderr]    Compiling futures-util-preview v0.2.2
Dec 02 20:16:33.367 INFO [stderr]    Compiling config v0.8.0
Dec 02 20:16:35.084 INFO [stderr]    Compiling futures-executor-preview v0.2.2
Dec 02 20:16:38.227 INFO [stderr]    Compiling futures-stable-preview v0.2.3
Dec 02 20:16:38.329 INFO [stderr]    Compiling futures-async-runtime-preview v0.2.3
Dec 02 20:16:38.431 INFO [stderr]    Compiling futures-preview v0.2.2
Dec 02 20:16:39.406 INFO [stderr]    Compiling riker v0.1.8
Dec 02 20:16:42.183 INFO [stderr] error[E0554]: #![feature] may not be used on the beta release channel
Dec 02 20:16:42.183 INFO [stderr]  --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/riker-0.1.8/src/lib.rs:2:1
Dec 02 20:16:42.183 INFO [stderr]   |
Dec 02 20:16:42.183 INFO [stderr] 2 | #![feature(assoc_unix_epoch)]
Dec 02 20:16:42.183 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 20:16:42.183 INFO [stderr] 
Dec 02 20:16:42.193 INFO [stderr] error: aborting due to previous error
Dec 02 20:16:42.193 INFO [stderr] 
Dec 02 20:16:42.193 INFO [stderr] For more information about this error, try `rustc --explain E0554`.
Dec 02 20:16:42.208 INFO [stderr] error: Could not compile `riker`.
Dec 02 20:16:42.208 INFO [stderr] 
Dec 02 20:16:42.208 INFO [stderr] To learn more, run the command again with --verbose.
Dec 02 20:16:42.210 INFO [stderr] su: No module specific data is present
Dec 02 20:16:43.368 INFO running `"docker" "inspect" "d0aee5ddc625aa3be218006613a7c6ff0112b920d71654d137ef468a2c382caa"`
Dec 02 20:16:43.647 INFO running `"docker" "rm" "-f" "d0aee5ddc625aa3be218006613a7c6ff0112b920d71654d137ef468a2c382caa"`
Dec 02 20:16:43.885 INFO [stdout] d0aee5ddc625aa3be218006613a7c6ff0112b920d71654d137ef468a2c382caa