Dec 03 17:22:56.713 INFO testing candid_server-0.2.1 against master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61 for beta-1.31-5
Dec 03 17:22:56.713 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 17:22:57.254 INFO [stdout] 0c320a7bd62eafb4b09135a7b2f6a240b8dc9047a6c5f8a7c726b99bc72da574
Dec 03 17:22:57.259 INFO running `"docker" "start" "-a" "0c320a7bd62eafb4b09135a7b2f6a240b8dc9047a6c5f8a7c726b99bc72da574"`
Dec 03 17:22:59.055 INFO [stderr] usermod: no changes
Dec 03 17:22:59.227 INFO [stderr]    Compiling socketcan v1.7.0
Dec 03 17:23:01.017 INFO [stderr]    Compiling candid_server v0.2.1 (/source)
Dec 03 17:23:02.715 INFO [stderr] warning: field is never used: `can_socket`
Dec 03 17:23:02.715 INFO [stderr]   --> src/client_handler.rs:10:5
Dec 03 17:23:02.715 INFO [stderr]    |
Dec 03 17:23:02.715 INFO [stderr] 10 |     can_socket: Arc<Mutex<CANSocket>>,
Dec 03 17:23:02.715 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 03 17:23:02.715 INFO [stderr]    |
Dec 03 17:23:02.715 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 03 17:23:02.715 INFO [stderr] 
Dec 03 17:23:02.715 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 03 17:23:02.715 INFO [stderr]   --> src/can_reader.rs:29:21
Dec 03 17:23:02.715 INFO [stderr]    |
Dec 03 17:23:02.715 INFO [stderr] 29 |                     client.send(frame.clone());
Dec 03 17:23:02.715 INFO [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 03 17:23:02.715 INFO [stderr]    |
Dec 03 17:23:02.715 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 03 17:23:02.715 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 03 17:23:02.715 INFO [stderr] 
Dec 03 17:23:05.771 INFO [stderr] error[E0554]: #![feature] may not be used on the beta release channel
Dec 03 17:23:05.771 INFO [stderr]  --> src/bin/vcan_rand.rs:1:1
Dec 03 17:23:05.771 INFO [stderr]   |
Dec 03 17:23:05.771 INFO [stderr] 1 | #![feature(int_to_from_bytes)]
Dec 03 17:23:05.771 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 03 17:23:05.771 INFO [stderr] 
Dec 03 17:23:05.771 INFO [stderr] error: aborting due to previous error
Dec 03 17:23:05.771 INFO [stderr] 
Dec 03 17:23:05.771 INFO [stderr] For more information about this error, try `rustc --explain E0554`.
Dec 03 17:23:05.799 INFO [stderr] error: Could not compile `candid_server`.
Dec 03 17:23:05.799 INFO [stderr] warning: build failed, waiting for other jobs to finish...
Dec 03 17:23:07.819 INFO [stderr] error: build failed
Dec 03 17:23:07.819 INFO [stderr] su: No module specific data is present
Dec 03 17:23:08.715 INFO running `"docker" "inspect" "0c320a7bd62eafb4b09135a7b2f6a240b8dc9047a6c5f8a7c726b99bc72da574"`
Dec 03 17:23:09.049 INFO running `"docker" "rm" "-f" "0c320a7bd62eafb4b09135a7b2f6a240b8dc9047a6c5f8a7c726b99bc72da574"`
Dec 03 17:23:09.452 INFO [stdout] 0c320a7bd62eafb4b09135a7b2f6a240b8dc9047a6c5f8a7c726b99bc72da574