Dec 02 18:41:21.492 INFO testing rust-freqdist-0.1.5 against master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61 for beta-1.31-5
Dec 02 18:41:21.492 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-0/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/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 18:41:21.866 INFO [stdout] 0cedfa9a0b8f9ed278b9d6e302198b751c1139523b850ab179aca09e139ac5d5
Dec 02 18:41:21.873 INFO running `"docker" "start" "-a" "0cedfa9a0b8f9ed278b9d6e302198b751c1139523b850ab179aca09e139ac5d5"`
Dec 02 18:41:22.873 INFO [stderr] usermod: no changes
Dec 02 18:41:22.930 INFO [stderr]    Compiling rust-freqdist v0.1.5 (/source)
Dec 02 18:41:23.571 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.65s
Dec 02 18:41:23.571 INFO [stderr] su: No module specific data is present
Dec 02 18:41:24.195 INFO running `"docker" "inspect" "0cedfa9a0b8f9ed278b9d6e302198b751c1139523b850ab179aca09e139ac5d5"`
Dec 02 18:41:24.529 INFO running `"docker" "rm" "-f" "0cedfa9a0b8f9ed278b9d6e302198b751c1139523b850ab179aca09e139ac5d5"`
Dec 02 18:41:24.775 INFO [stdout] 0cedfa9a0b8f9ed278b9d6e302198b751c1139523b850ab179aca09e139ac5d5
Dec 02 18:41:24.781 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-0/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/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 test --frozen --no-run" "-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 18:41:25.212 INFO [stdout] 8319023b98783e805e155820b6dfd79672bade8598a532182fbc431f27bcb47d
Dec 02 18:41:25.215 INFO running `"docker" "start" "-a" "8319023b98783e805e155820b6dfd79672bade8598a532182fbc431f27bcb47d"`
Dec 02 18:41:26.137 INFO [stderr] usermod: no changes
Dec 02 18:41:26.167 INFO [stderr]    Compiling rust-freqdist v0.1.5 (/source)
Dec 02 18:41:26.791 INFO [stderr] error[E0554]: #![feature] may not be used on the beta release channel
Dec 02 18:41:26.791 INFO [stderr]   --> src/lib.rs:29:19
Dec 02 18:41:26.791 INFO [stderr]    |
Dec 02 18:41:26.791 INFO [stderr] 29 | #![cfg_attr(test, feature(test))]
Dec 02 18:41:26.791 INFO [stderr]    |                   ^^^^^^^^^^^^^
Dec 02 18:41:26.791 INFO [stderr] 
Dec 02 18:41:26.791 INFO [stderr] error: aborting due to previous error
Dec 02 18:41:26.791 INFO [stderr] 
Dec 02 18:41:26.791 INFO [stderr] For more information about this error, try `rustc --explain E0554`.
Dec 02 18:41:26.794 INFO [stderr] error: Could not compile `rust-freqdist`.
Dec 02 18:41:26.794 INFO [stderr] 
Dec 02 18:41:26.794 INFO [stderr] To learn more, run the command again with --verbose.
Dec 02 18:41:26.794 INFO [stderr] su: No module specific data is present
Dec 02 18:41:27.328 INFO running `"docker" "inspect" "8319023b98783e805e155820b6dfd79672bade8598a532182fbc431f27bcb47d"`
Dec 02 18:41:27.527 INFO running `"docker" "rm" "-f" "8319023b98783e805e155820b6dfd79672bade8598a532182fbc431f27bcb47d"`
Dec 02 18:41:27.745 INFO [stdout] 8319023b98783e805e155820b6dfd79672bade8598a532182fbc431f27bcb47d