Dec 11 09:51:25.997 INFO checking sebglazebrook/udp-server against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 11 09:51:25.997 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-0/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/pr-56677/master#3a75e80557a103497cffbcab395a2f37061a77ea:/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 +3a75e80557a103497cffbcab395a2f37061a77ea-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 11 09:51:26.489 INFO [stdout] 53c8de7033f6c1a78749ea0d858d190232b3879a3e681a46fa9da6c836bc6bc0
Dec 11 09:51:26.498 INFO running `"docker" "start" "-a" "53c8de7033f6c1a78749ea0d858d190232b3879a3e681a46fa9da6c836bc6bc0"`
Dec 11 09:51:28.548 INFO [stderr] usermod: no changes
Dec 11 09:51:28.612 INFO [stderr]     Checking nix v0.9.0
Dec 11 09:51:32.849 INFO [stderr]     Checking ctrlc v3.1.0
Dec 11 09:51:33.254 INFO [stderr]     Checking udp-server v0.1.0 (/source)
Dec 11 09:51:33.836 INFO [stderr] warning: variable does not need to be mutable
Dec 11 09:51:33.836 INFO [stderr]   --> src/main.rs:39:13
Dec 11 09:51:33.836 INFO [stderr]    |
Dec 11 09:51:33.836 INFO [stderr] 39 |         let mut socket = try!(UdpSocket::bind("0.0.0.0:34254"));
Dec 11 09:51:33.836 INFO [stderr]    |             ----^^^^^^
Dec 11 09:51:33.836 INFO [stderr]    |             |
Dec 11 09:51:33.836 INFO [stderr]    |             help: remove this `mut`
Dec 11 09:51:33.844 INFO [stderr]    |
Dec 11 09:51:33.844 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 11 09:51:33.844 INFO [stderr] 
Dec 11 09:51:33.844 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 09:51:33.844 INFO [stderr]   --> src/main.rs:24:9
Dec 11 09:51:33.844 INFO [stderr]    |
Dec 11 09:51:33.844 INFO [stderr] 24 |         self.start_listening();
Dec 11 09:51:33.844 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 09:51:33.844 INFO [stderr]    |
Dec 11 09:51:33.844 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 11 09:51:33.844 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 09:51:33.844 INFO [stderr] 
Dec 11 09:51:33.844 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 09:51:33.844 INFO [stderr]   --> src/main.rs:31:3
Dec 11 09:51:33.844 INFO [stderr]    |
Dec 11 09:51:33.844 INFO [stderr] 31 |           ctrlc::set_handler(move || {
Dec 11 09:51:33.844 INFO [stderr]    |  _________^
Dec 11 09:51:33.844 INFO [stderr] 32 | |             running.store(false, Ordering::SeqCst); 
Dec 11 09:51:33.844 INFO [stderr] 33 | |         });
Dec 11 09:51:33.844 INFO [stderr]    | |___________^
Dec 11 09:51:33.844 INFO [stderr]    |
Dec 11 09:51:33.844 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 09:51:33.844 INFO [stderr] 
Dec 11 09:51:33.887 INFO [stderr] warning: variable does not need to be mutable
Dec 11 09:51:33.887 INFO [stderr]   --> src/main.rs:39:13
Dec 11 09:51:33.887 INFO [stderr]    |
Dec 11 09:51:33.887 INFO [stderr] 39 |         let mut socket = try!(UdpSocket::bind("0.0.0.0:34254"));
Dec 11 09:51:33.887 INFO [stderr]    |             ----^^^^^^
Dec 11 09:51:33.887 INFO [stderr]    |             |
Dec 11 09:51:33.887 INFO [stderr]    |             help: remove this `mut`
Dec 11 09:51:33.887 INFO [stderr]    |
Dec 11 09:51:33.887 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 11 09:51:33.887 INFO [stderr] 
Dec 11 09:51:33.887 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 09:51:33.887 INFO [stderr]   --> src/main.rs:24:9
Dec 11 09:51:33.888 INFO [stderr]    |
Dec 11 09:51:33.888 INFO [stderr] 24 |         self.start_listening();
Dec 11 09:51:33.888 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 09:51:33.888 INFO [stderr]    |
Dec 11 09:51:33.888 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 11 09:51:33.888 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 09:51:33.888 INFO [stderr] 
Dec 11 09:51:33.888 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 09:51:33.888 INFO [stderr]   --> src/main.rs:31:3
Dec 11 09:51:33.888 INFO [stderr]    |
Dec 11 09:51:33.888 INFO [stderr] 31 |           ctrlc::set_handler(move || {
Dec 11 09:51:33.888 INFO [stderr]    |  _________^
Dec 11 09:51:33.888 INFO [stderr] 32 | |             running.store(false, Ordering::SeqCst); 
Dec 11 09:51:33.888 INFO [stderr] 33 | |         });
Dec 11 09:51:33.888 INFO [stderr]    | |___________^
Dec 11 09:51:33.888 INFO [stderr]    |
Dec 11 09:51:33.888 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 09:51:33.888 INFO [stderr] 
Dec 11 09:51:33.927 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.36s
Dec 11 09:51:33.928 INFO [stderr] su: No module specific data is present
Dec 11 09:51:34.742 INFO running `"docker" "inspect" "53c8de7033f6c1a78749ea0d858d190232b3879a3e681a46fa9da6c836bc6bc0"`
Dec 11 09:51:35.082 INFO running `"docker" "rm" "-f" "53c8de7033f6c1a78749ea0d858d190232b3879a3e681a46fa9da6c836bc6bc0"`
Dec 11 09:51:35.328 INFO [stdout] 53c8de7033f6c1a78749ea0d858d190232b3879a3e681a46fa9da6c836bc6bc0