Dec 02 20:16:52.599 INFO testing riker-deadletter-0.1.8 against 1.30.1 for beta-1.31-5
Dec 02 20:16:52.600 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-6/1.30.1:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/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 20:16:52.971 INFO [stdout] 8ff9c29d920956e4ae668206ea6995276541fef470d1b724fe69803f37182c7a
Dec 02 20:16:52.973 INFO running `"docker" "start" "-a" "8ff9c29d920956e4ae668206ea6995276541fef470d1b724fe69803f37182c7a"`
Dec 02 20:16:54.432 INFO [stderr] usermod: no changes
Dec 02 20:16:54.711 INFO [stderr]    Compiling futures-io-preview v0.2.2
Dec 02 20:16:54.711 INFO [stderr]    Compiling config v0.8.0
Dec 02 20:16:56.306 INFO [stderr]    Compiling futures-util-preview v0.2.2
Dec 02 20:17:00.717 INFO [stderr]    Compiling futures-executor-preview v0.2.2
Dec 02 20:17:02.783 INFO [stderr]    Compiling futures-stable-preview v0.2.3
Dec 02 20:17:02.879 INFO [stderr]    Compiling futures-async-runtime-preview v0.2.3
Dec 02 20:17:02.979 INFO [stderr]    Compiling futures-preview v0.2.2
Dec 02 20:17:04.007 INFO [stderr]    Compiling riker v0.1.8
Dec 02 20:17:07.382 INFO [stderr] error[E0554]: #![feature] may not be used on the stable release channel
Dec 02 20:17:07.382 INFO [stderr]  --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/riker-0.1.8/src/lib.rs:2:1
Dec 02 20:17:07.382 INFO [stderr]   |
Dec 02 20:17:07.382 INFO [stderr] 2 | #![feature(assoc_unix_epoch)]
Dec 02 20:17:07.382 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 20:17:07.382 INFO [stderr] 
Dec 02 20:17:07.387 INFO [stderr] error: aborting due to previous error
Dec 02 20:17:07.387 INFO [stderr] 
Dec 02 20:17:07.387 INFO [stderr] For more information about this error, try `rustc --explain E0554`.
Dec 02 20:17:07.401 INFO [stderr] error: Could not compile `riker`.
Dec 02 20:17:07.401 INFO [stderr] 
Dec 02 20:17:07.401 INFO [stderr] To learn more, run the command again with --verbose.
Dec 02 20:17:07.403 INFO [stderr] su: No module specific data is present
Dec 02 20:17:07.693 INFO running `"docker" "inspect" "8ff9c29d920956e4ae668206ea6995276541fef470d1b724fe69803f37182c7a"`
Dec 02 20:17:07.811 INFO running `"docker" "rm" "-f" "8ff9c29d920956e4ae668206ea6995276541fef470d1b724fe69803f37182c7a"`
Dec 02 20:17:07.895 INFO [stdout] 8ff9c29d920956e4ae668206ea6995276541fef470d1b724fe69803f37182c7a