Dec 03 12:31:19.687 INFO testing exar-0.1.0 against master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61 for beta-1.31-5
Dec 03 12:31:19.687 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 03 12:31:20.003 INFO [stdout] bd9c845934adefb0cac9f751aa39f4544546466be40e6a49287081c3ffc7f2c8
Dec 03 12:31:20.003 INFO running `"docker" "start" "-a" "bd9c845934adefb0cac9f751aa39f4544546466be40e6a49287081c3ffc7f2c8"`
Dec 03 12:31:21.247 INFO [stderr] usermod: no changes
Dec 03 12:31:21.403 INFO [stderr]    Compiling exar v0.1.0 (/source)
Dec 03 12:31:25.191 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.91s
Dec 03 12:31:25.194 INFO [stderr] su: No module specific data is present
Dec 03 12:31:25.660 INFO running `"docker" "inspect" "bd9c845934adefb0cac9f751aa39f4544546466be40e6a49287081c3ffc7f2c8"`
Dec 03 12:31:25.820 INFO running `"docker" "rm" "-f" "bd9c845934adefb0cac9f751aa39f4544546466be40e6a49287081c3ffc7f2c8"`
Dec 03 12:31:26.011 INFO [stdout] bd9c845934adefb0cac9f751aa39f4544546466be40e6a49287081c3ffc7f2c8
Dec 03 12:31:26.014 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 03 12:31:26.286 INFO [stdout] 230caacf0c76d4e8384155396a32002e8da8c8a682a2c4318b2550d43bce1cd2
Dec 03 12:31:26.289 INFO running `"docker" "start" "-a" "230caacf0c76d4e8384155396a32002e8da8c8a682a2c4318b2550d43bce1cd2"`
Dec 03 12:31:26.943 INFO [stderr] usermod: no changes
Dec 03 12:31:27.044 INFO [stderr]    Compiling exar-testkit v0.1.0
Dec 03 12:31:27.805 INFO [stderr] error[E0554]: #![feature] may not be used on the beta release channel
Dec 03 12:31:27.805 INFO [stderr]  --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/exar-testkit-0.1.0/src/lib.rs:1:1
Dec 03 12:31:27.805 INFO [stderr]   |
Dec 03 12:31:27.805 INFO [stderr] 1 | #![feature(const_fn)]
Dec 03 12:31:27.805 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^
Dec 03 12:31:27.805 INFO [stderr] 
Dec 03 12:31:27.805 INFO [stderr] error: aborting due to previous error
Dec 03 12:31:27.805 INFO [stderr] 
Dec 03 12:31:27.807 INFO [stderr] For more information about this error, try `rustc --explain E0554`.
Dec 03 12:31:27.815 INFO [stderr] error: Could not compile `exar-testkit`.
Dec 03 12:31:27.815 INFO [stderr] 
Dec 03 12:31:27.815 INFO [stderr] To learn more, run the command again with --verbose.
Dec 03 12:31:27.815 INFO [stderr] su: No module specific data is present
Dec 03 12:31:28.208 INFO running `"docker" "inspect" "230caacf0c76d4e8384155396a32002e8da8c8a682a2c4318b2550d43bce1cd2"`
Dec 03 12:31:28.287 INFO running `"docker" "rm" "-f" "230caacf0c76d4e8384155396a32002e8da8c8a682a2c4318b2550d43bce1cd2"`
Dec 03 12:31:28.368 INFO [stdout] 230caacf0c76d4e8384155396a32002e8da8c8a682a2c4318b2550d43bce1cd2