Dec 02 09:58:38.645 INFO testing 1011X/emily-rust against master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61 for beta-1.31-5
Dec 02 09:58:38.646 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-2/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/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 09:58:39.011 INFO [stdout] 3f2cc354f4a525458b4380298e0ff94045e6eafb4a14e71dd6023964f03b4b53
Dec 02 09:58:39.017 INFO running `"docker" "start" "-a" "3f2cc354f4a525458b4380298e0ff94045e6eafb4a14e71dd6023964f03b4b53"`
Dec 02 09:58:39.970 INFO [stderr] usermod: no changes
Dec 02 09:58:40.060 INFO [stderr]    Compiling memchr v1.0.2
Dec 02 09:58:40.060 INFO [stderr]    Compiling regex v0.2.7
Dec 02 09:58:48.392 INFO [stderr]    Compiling nom v3.2.1
Dec 02 09:58:51.979 INFO [stderr]    Compiling emily-rust v0.0.1 (/source)
Dec 02 09:58:53.087 INFO [stderr] error[E0554]: #![feature] may not be used on the beta release channel
Dec 02 09:58:53.087 INFO [stderr]  --> src/main.rs:1:1
Dec 02 09:58:53.087 INFO [stderr]   |
Dec 02 09:58:53.087 INFO [stderr] 1 | #![feature(slice_patterns)]
Dec 02 09:58:53.087 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 09:58:53.087 INFO [stderr] 
Dec 02 09:58:53.087 INFO [stderr] error: aborting due to previous error
Dec 02 09:58:53.087 INFO [stderr] 
Dec 02 09:58:53.087 INFO [stderr] For more information about this error, try `rustc --explain E0554`.
Dec 02 09:58:53.090 INFO [stderr] error: Could not compile `emily-rust`.
Dec 02 09:58:53.090 INFO [stderr] 
Dec 02 09:58:53.090 INFO [stderr] To learn more, run the command again with --verbose.
Dec 02 09:58:53.091 INFO [stderr] su: No module specific data is present
Dec 02 09:58:53.504 INFO running `"docker" "inspect" "3f2cc354f4a525458b4380298e0ff94045e6eafb4a14e71dd6023964f03b4b53"`
Dec 02 09:58:53.737 INFO running `"docker" "rm" "-f" "3f2cc354f4a525458b4380298e0ff94045e6eafb4a14e71dd6023964f03b4b53"`
Dec 02 09:58:54.055 INFO [stdout] 3f2cc354f4a525458b4380298e0ff94045e6eafb4a14e71dd6023964f03b4b53