Dec 03 16:30:10.843 INFO testing chao-0.1.0 against master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61 for beta-1.31-5
Dec 03 16:30:10.844 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-5/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/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 03 16:30:11.297 INFO [stdout] cad1de91519243df478e459b569568cc7c94c3f43a34076c72ecfca48b2fbe49
Dec 03 16:30:11.303 INFO running `"docker" "start" "-a" "cad1de91519243df478e459b569568cc7c94c3f43a34076c72ecfca48b2fbe49"`
Dec 03 16:30:12.386 INFO [stderr] usermod: no changes
Dec 03 16:30:12.495 INFO [stderr]    Compiling libchao v0.1.0
Dec 03 16:30:13.991 INFO [stderr] error[E0554]: #![feature] may not be used on the beta release channel
Dec 03 16:30:13.991 INFO [stderr]  --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/libchao-0.1.0/src/lib.rs:1:1
Dec 03 16:30:13.991 INFO [stderr]   |
Dec 03 16:30:13.991 INFO [stderr] 1 | #![feature(slice_patterns)]
Dec 03 16:30:13.991 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 03 16:30:13.991 INFO [stderr] 
Dec 03 16:30:13.991 INFO [stderr] error: aborting due to previous error
Dec 03 16:30:13.991 INFO [stderr] 
Dec 03 16:30:13.991 INFO [stderr] For more information about this error, try `rustc --explain E0554`.
Dec 03 16:30:14.007 INFO [stderr] error: Could not compile `libchao`.
Dec 03 16:30:14.007 INFO [stderr] 
Dec 03 16:30:14.007 INFO [stderr] To learn more, run the command again with --verbose.
Dec 03 16:30:14.011 INFO [stderr] su: No module specific data is present
Dec 03 16:30:14.625 INFO running `"docker" "inspect" "cad1de91519243df478e459b569568cc7c94c3f43a34076c72ecfca48b2fbe49"`
Dec 03 16:30:14.947 INFO running `"docker" "rm" "-f" "cad1de91519243df478e459b569568cc7c94c3f43a34076c72ecfca48b2fbe49"`
Dec 03 16:30:15.250 INFO [stdout] cad1de91519243df478e459b569568cc7c94c3f43a34076c72ecfca48b2fbe49