Dec 02 20:16:44.968 INFO testing riker-dispatcher-0.1.8 against 1.30.1 for beta-1.31-5
Dec 02 20:16:44.968 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 20:16:45.250 INFO [stdout] cdac91d84f0c012c57da850c50e6aaa687a1c2d752e37f23759f795a3e207a87
Dec 02 20:16:45.251 INFO running `"docker" "start" "-a" "cdac91d84f0c012c57da850c50e6aaa687a1c2d752e37f23759f795a3e207a87"`
Dec 02 20:16:46.207 INFO [stderr] usermod: no changes
Dec 02 20:16:46.406 INFO [stderr]    Compiling futures v0.1.25
Dec 02 20:16:46.408 INFO [stderr]    Compiling futures-core-preview v0.2.3
Dec 02 20:16:46.420 INFO [stderr]    Compiling config v0.8.0
Dec 02 20:16:47.947 INFO [stderr]    Compiling futures-channel-preview v0.2.2
Dec 02 20:16:47.947 INFO [stderr]    Compiling futures-io-preview v0.2.2
Dec 02 20:16:50.107 INFO [stderr]    Compiling futures-sink-preview v0.2.2
Dec 02 20:16:51.143 INFO [stderr]    Compiling futures-util-preview v0.2.2
Dec 02 20:16:55.891 INFO [stderr]    Compiling futures-cpupool v0.1.8
Dec 02 20:16:56.396 INFO [stderr]    Compiling futures-executor-preview v0.2.2
Dec 02 20:16:58.786 INFO [stderr]    Compiling futures-stable-preview v0.2.3
Dec 02 20:16:58.931 INFO [stderr]    Compiling futures-async-runtime-preview v0.2.3
Dec 02 20:16:59.077 INFO [stderr]    Compiling futures-preview v0.2.2
Dec 02 20:17:00.147 INFO [stderr]    Compiling riker v0.1.8
Dec 02 20:17:03.115 INFO [stderr] error[E0554]: #![feature] may not be used on the stable release channel
Dec 02 20:17:03.115 INFO [stderr]  --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/riker-0.1.8/src/lib.rs:2:1
Dec 02 20:17:03.115 INFO [stderr]   |
Dec 02 20:17:03.115 INFO [stderr] 2 | #![feature(assoc_unix_epoch)]
Dec 02 20:17:03.115 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 20:17:03.115 INFO [stderr] 
Dec 02 20:17:03.127 INFO [stderr] error: aborting due to previous error
Dec 02 20:17:03.127 INFO [stderr] 
Dec 02 20:17:03.127 INFO [stderr] For more information about this error, try `rustc --explain E0554`.
Dec 02 20:17:03.142 INFO [stderr] error: Could not compile `riker`.
Dec 02 20:17:03.142 INFO [stderr] 
Dec 02 20:17:03.142 INFO [stderr] To learn more, run the command again with --verbose.
Dec 02 20:17:03.143 INFO [stderr] su: No module specific data is present
Dec 02 20:17:03.576 INFO running `"docker" "inspect" "cdac91d84f0c012c57da850c50e6aaa687a1c2d752e37f23759f795a3e207a87"`
Dec 02 20:17:03.813 INFO running `"docker" "rm" "-f" "cdac91d84f0c012c57da850c50e6aaa687a1c2d752e37f23759f795a3e207a87"`
Dec 02 20:17:04.048 INFO [stdout] cdac91d84f0c012c57da850c50e6aaa687a1c2d752e37f23759f795a3e207a87