Dec 04 10:31:30.660 INFO checking sebglazebrook/udp-server against try#1df97983eb2057dc6a8f7eb364e263b51ae23230 for pr-56481
Dec 04 10:31:30.660 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-6/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/pr-56481/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/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 +1df97983eb2057dc6a8f7eb364e263b51ae23230-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 04 10:31:31.111 INFO [stdout] 8fdaced264e7eae3702ee8dfc1dfb057a50c89195ebdabb39b1687fc9c7ebc6c
Dec 04 10:31:31.116 INFO running `"docker" "start" "-a" "8fdaced264e7eae3702ee8dfc1dfb057a50c89195ebdabb39b1687fc9c7ebc6c"`
Dec 04 10:31:32.267 INFO [stderr] usermod: no changes
Dec 04 10:31:32.427 INFO [stderr]     Checking nix v0.9.0
Dec 04 10:31:36.879 INFO [stderr]     Checking ctrlc v3.1.0
Dec 04 10:31:37.269 INFO [stderr]     Checking udp-server v0.1.0 (/source)
Dec 04 10:31:37.807 INFO [stderr] warning: variable does not need to be mutable
Dec 04 10:31:37.807 INFO [stderr]   --> src/main.rs:39:13
Dec 04 10:31:37.807 INFO [stderr]    |
Dec 04 10:31:37.807 INFO [stderr] 39 |         let mut socket = try!(UdpSocket::bind("0.0.0.0:34254"));
Dec 04 10:31:37.807 INFO [stderr]    |             ----^^^^^^
Dec 04 10:31:37.807 INFO [stderr]    |             |
Dec 04 10:31:37.807 INFO [stderr]    |             help: remove this `mut`
Dec 04 10:31:37.819 INFO [stderr]    |
Dec 04 10:31:37.819 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 04 10:31:37.819 INFO [stderr] 
Dec 04 10:31:37.820 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 10:31:37.820 INFO [stderr]   --> src/main.rs:24:9
Dec 04 10:31:37.820 INFO [stderr]    |
Dec 04 10:31:37.820 INFO [stderr] 24 |         self.start_listening();
Dec 04 10:31:37.820 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 10:31:37.820 INFO [stderr]    |
Dec 04 10:31:37.820 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 04 10:31:37.820 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 10:31:37.820 INFO [stderr] 
Dec 04 10:31:37.820 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 10:31:37.820 INFO [stderr]   --> src/main.rs:31:3
Dec 04 10:31:37.820 INFO [stderr]    |
Dec 04 10:31:37.820 INFO [stderr] 31 |           ctrlc::set_handler(move || {
Dec 04 10:31:37.820 INFO [stderr]    |  _________^
Dec 04 10:31:37.820 INFO [stderr] 32 | |             running.store(false, Ordering::SeqCst); 
Dec 04 10:31:37.820 INFO [stderr] 33 | |         });
Dec 04 10:31:37.820 INFO [stderr]    | |___________^
Dec 04 10:31:37.820 INFO [stderr]    |
Dec 04 10:31:37.820 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 10:31:37.820 INFO [stderr] 
Dec 04 10:31:37.839 INFO [stderr] warning: variable does not need to be mutable
Dec 04 10:31:37.839 INFO [stderr]   --> src/main.rs:39:13
Dec 04 10:31:37.839 INFO [stderr]    |
Dec 04 10:31:37.840 INFO [stderr] 39 |         let mut socket = try!(UdpSocket::bind("0.0.0.0:34254"));
Dec 04 10:31:37.840 INFO [stderr]    |             ----^^^^^^
Dec 04 10:31:37.840 INFO [stderr]    |             |
Dec 04 10:31:37.841 INFO [stderr]    |             help: remove this `mut`
Dec 04 10:31:37.841 INFO [stderr]    |
Dec 04 10:31:37.841 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 04 10:31:37.842 INFO [stderr] 
Dec 04 10:31:37.843 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 10:31:37.844 INFO [stderr]   --> src/main.rs:24:9
Dec 04 10:31:37.844 INFO [stderr]    |
Dec 04 10:31:37.844 INFO [stderr] 24 |         self.start_listening();
Dec 04 10:31:37.845 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 10:31:37.845 INFO [stderr]    |
Dec 04 10:31:37.845 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 04 10:31:37.845 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 10:31:37.846 INFO [stderr] 
Dec 04 10:31:37.846 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 10:31:37.846 INFO [stderr]   --> src/main.rs:31:3
Dec 04 10:31:37.846 INFO [stderr]    |
Dec 04 10:31:37.847 INFO [stderr] 31 |           ctrlc::set_handler(move || {
Dec 04 10:31:37.847 INFO [stderr]    |  _________^
Dec 04 10:31:37.847 INFO [stderr] 32 | |             running.store(false, Ordering::SeqCst); 
Dec 04 10:31:37.848 INFO [stderr] 33 | |         });
Dec 04 10:31:37.848 INFO [stderr]    | |___________^
Dec 04 10:31:37.848 INFO [stderr]    |
Dec 04 10:31:37.848 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 10:31:37.849 INFO [stderr] 
Dec 04 10:31:37.890 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.60s
Dec 04 10:31:37.893 INFO [stderr] su: No module specific data is present
Dec 04 10:31:39.156 INFO running `"docker" "inspect" "8fdaced264e7eae3702ee8dfc1dfb057a50c89195ebdabb39b1687fc9c7ebc6c"`
Dec 04 10:31:39.464 INFO running `"docker" "rm" "-f" "8fdaced264e7eae3702ee8dfc1dfb057a50c89195ebdabb39b1687fc9c7ebc6c"`
Dec 04 10:31:39.775 INFO [stdout] 8fdaced264e7eae3702ee8dfc1dfb057a50c89195ebdabb39b1687fc9c7ebc6c