Dec 02 10:51:31.254 INFO testing wpilib-sys-0.2.3 against master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61 for beta-1.31-5
Dec 02 10:51:31.254 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 10:51:31.459 INFO [stdout] f775e9b1e5698adfefdb1c676e9035420eeb8bb20aa9800efe07bdf16ed15e23
Dec 02 10:51:31.462 INFO running `"docker" "start" "-a" "f775e9b1e5698adfefdb1c676e9035420eeb8bb20aa9800efe07bdf16ed15e23"`
Dec 02 10:51:32.503 INFO [stderr] usermod: no changes
Dec 02 10:51:32.663 INFO [stderr]    Compiling clang-sys v0.23.0
Dec 02 10:51:50.867 INFO [stderr]    Compiling bindgen v0.37.4
Dec 02 10:52:14.693 INFO [stderr]    Compiling wpilib-sys v0.2.3 (/source)
Dec 02 10:52:24.507 INFO [stderr] error[E0554]: #![feature] may not be used on the beta release channel
Dec 02 10:52:24.507 INFO [stderr]  --> src/lib.rs:8:1
Dec 02 10:52:24.507 INFO [stderr]   |
Dec 02 10:52:24.507 INFO [stderr] 8 | #![feature(concat_idents)]
Dec 02 10:52:24.507 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 10:52:24.507 INFO [stderr] 
Dec 02 10:52:24.507 INFO [stderr] error: aborting due to previous error
Dec 02 10:52:24.507 INFO [stderr] 
Dec 02 10:52:24.507 INFO [stderr] For more information about this error, try `rustc --explain E0554`.
Dec 02 10:52:24.517 INFO [stderr] error: Could not compile `wpilib-sys`.
Dec 02 10:52:24.517 INFO [stderr] 
Dec 02 10:52:24.517 INFO [stderr] To learn more, run the command again with --verbose.
Dec 02 10:52:24.519 INFO [stderr] su: No module specific data is present
Dec 02 10:52:26.679 INFO running `"docker" "inspect" "f775e9b1e5698adfefdb1c676e9035420eeb8bb20aa9800efe07bdf16ed15e23"`
Dec 02 10:52:27.017 INFO running `"docker" "rm" "-f" "f775e9b1e5698adfefdb1c676e9035420eeb8bb20aa9800efe07bdf16ed15e23"`
Dec 02 10:52:27.287 INFO [stdout] f775e9b1e5698adfefdb1c676e9035420eeb8bb20aa9800efe07bdf16ed15e23