[INFO] updating cached repository sebglazebrook/udp-server
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/sebglazebrook/udp-server
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/sebglazebrook/udp-server" "work/ex/beta-1.38-1/sources/1.37.0/gh/sebglazebrook/udp-server"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/sebglazebrook/udp-server'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/sebglazebrook/udp-server" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/sebglazebrook/udp-server"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/sebglazebrook/udp-server'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 77705f72eee63562a186a99acf53acc60ee7d82e
[INFO] sha for GitHub repo sebglazebrook/udp-server: 77705f72eee63562a186a99acf53acc60ee7d82e
[INFO] validating manifest of sebglazebrook/udp-server on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of sebglazebrook/udp-server on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing sebglazebrook/udp-server
[INFO] finished frobbing sebglazebrook/udp-server
[INFO] frobbed toml for sebglazebrook/udp-server written to work/ex/beta-1.38-1/sources/1.37.0/gh/sebglazebrook/udp-server/Cargo.toml
[INFO] started frobbing sebglazebrook/udp-server
[INFO] finished frobbing sebglazebrook/udp-server
[INFO] frobbed toml for sebglazebrook/udp-server written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/sebglazebrook/udp-server/Cargo.toml
[INFO] crate sebglazebrook/udp-server already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing sebglazebrook/udp-server against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/sebglazebrook/udp-server:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 824e69a505ee6c86cd9f22b405ac83419249d03d014c29b080c72d593b75189c
[INFO] running `"docker" "start" "-a" "824e69a505ee6c86cd9f22b405ac83419249d03d014c29b080c72d593b75189c"`
[INFO] [stderr]    Compiling nix v0.9.0
[INFO] [stderr]    Compiling ctrlc v3.1.0
[INFO] [stderr]    Compiling udp-server v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:39:13
[INFO] [stderr]    |
[INFO] [stderr] 39 |         let mut socket = try!(UdpSocket::bind("0.0.0.0:34254"));
[INFO] [stderr]    |             ----^^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:24:9
[INFO] [stderr]    |
[INFO] [stderr] 24 |         self.start_listening();
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:31:3
[INFO] [stderr]    |
[INFO] [stderr] 31 |           ctrlc::set_handler(move || {
[INFO] [stderr]    |  _________^
[INFO] [stderr] 32 | |             running.store(false, Ordering::SeqCst); 
[INFO] [stderr] 33 | |         });
[INFO] [stderr]    | |___________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.58s
[INFO] running `"docker" "inspect" "824e69a505ee6c86cd9f22b405ac83419249d03d014c29b080c72d593b75189c"`
[INFO] running `"docker" "rm" "-f" "824e69a505ee6c86cd9f22b405ac83419249d03d014c29b080c72d593b75189c"`
[INFO] [stdout] 824e69a505ee6c86cd9f22b405ac83419249d03d014c29b080c72d593b75189c
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/sebglazebrook/udp-server:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] 949832d27cf214d09ab29d72c6f8d3dca857605ce2e3d280a66c7e81fcb91fa5
[INFO] running `"docker" "start" "-a" "949832d27cf214d09ab29d72c6f8d3dca857605ce2e3d280a66c7e81fcb91fa5"`
[INFO] [stderr]    Compiling udp-server v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:39:13
[INFO] [stderr]    |
[INFO] [stderr] 39 |         let mut socket = try!(UdpSocket::bind("0.0.0.0:34254"));
[INFO] [stderr]    |             ----^^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:24:9
[INFO] [stderr]    |
[INFO] [stderr] 24 |         self.start_listening();
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:31:3
[INFO] [stderr]    |
[INFO] [stderr] 31 |           ctrlc::set_handler(move || {
[INFO] [stderr]    |  _________^
[INFO] [stderr] 32 | |             running.store(false, Ordering::SeqCst); 
[INFO] [stderr] 33 | |         });
[INFO] [stderr]    | |___________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.84s
[INFO] running `"docker" "inspect" "949832d27cf214d09ab29d72c6f8d3dca857605ce2e3d280a66c7e81fcb91fa5"`
[INFO] running `"docker" "rm" "-f" "949832d27cf214d09ab29d72c6f8d3dca857605ce2e3d280a66c7e81fcb91fa5"`
[INFO] [stdout] 949832d27cf214d09ab29d72c6f8d3dca857605ce2e3d280a66c7e81fcb91fa5
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/sebglazebrook/udp-server:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-08-13" "test" "--frozen"`
[INFO] [stdout] 083e9b25061eb7caf515be2b8cc2bda3823f78a57b5ed4ed0bc4a20d62bd54ea
[INFO] running `"docker" "start" "-a" "083e9b25061eb7caf515be2b8cc2bda3823f78a57b5ed4ed0bc4a20d62bd54ea"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/udp_server-d5d2612b2e74df81
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "083e9b25061eb7caf515be2b8cc2bda3823f78a57b5ed4ed0bc4a20d62bd54ea"`
[INFO] running `"docker" "rm" "-f" "083e9b25061eb7caf515be2b8cc2bda3823f78a57b5ed4ed0bc4a20d62bd54ea"`
[INFO] [stdout] 083e9b25061eb7caf515be2b8cc2bda3823f78a57b5ed4ed0bc4a20d62bd54ea