[INFO] updating cached repository mattyw/rust-udp-play
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/mattyw/rust-udp-play
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/mattyw/rust-udp-play" "work/ex/pr-61100/sources/master#8869ee03d7f258e1b76a11c6fbb01b5708a9f504/gh/mattyw/rust-udp-play"`
[INFO] [stderr] Cloning into 'work/ex/pr-61100/sources/master#8869ee03d7f258e1b76a11c6fbb01b5708a9f504/gh/mattyw/rust-udp-play'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/mattyw/rust-udp-play" "work/ex/pr-61100/sources/try#58b21121d0b447ceb3f1a655155d802191acf044/gh/mattyw/rust-udp-play"`
[INFO] [stderr] Cloning into 'work/ex/pr-61100/sources/try#58b21121d0b447ceb3f1a655155d802191acf044/gh/mattyw/rust-udp-play'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 0adcf9c2b65f1ad7c3d2ad2e317420338960483c
[INFO] sha for GitHub repo mattyw/rust-udp-play: 0adcf9c2b65f1ad7c3d2ad2e317420338960483c
[INFO] validating manifest of mattyw/rust-udp-play on toolchain master#8869ee03d7f258e1b76a11c6fbb01b5708a9f504
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+8869ee03d7f258e1b76a11c6fbb01b5708a9f504-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of mattyw/rust-udp-play on toolchain try#58b21121d0b447ceb3f1a655155d802191acf044
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+58b21121d0b447ceb3f1a655155d802191acf044-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing mattyw/rust-udp-play
[INFO] finished frobbing mattyw/rust-udp-play
[INFO] frobbed toml for mattyw/rust-udp-play written to work/ex/pr-61100/sources/master#8869ee03d7f258e1b76a11c6fbb01b5708a9f504/gh/mattyw/rust-udp-play/Cargo.toml
[INFO] started frobbing mattyw/rust-udp-play
[INFO] finished frobbing mattyw/rust-udp-play
[INFO] frobbed toml for mattyw/rust-udp-play written to work/ex/pr-61100/sources/try#58b21121d0b447ceb3f1a655155d802191acf044/gh/mattyw/rust-udp-play/Cargo.toml
[INFO] crate mattyw/rust-udp-play already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+8869ee03d7f258e1b76a11c6fbb01b5708a9f504-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+58b21121d0b447ceb3f1a655155d802191acf044-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking mattyw/rust-udp-play against try#58b21121d0b447ceb3f1a655155d802191acf044 for pr-61100
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-61100/worker-2/try#58b21121d0b447ceb3f1a655155d802191acf044:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-61100/sources/try#58b21121d0b447ceb3f1a655155d802191acf044/gh/mattyw/rust-udp-play:/opt/crater/workdir:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/crater-raid/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=forbid" "-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" "+58b21121d0b447ceb3f1a655155d802191acf044-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 9092cc67a409b03ef681acc1af67b0fb1135d359f7d60823f91925914ab7c164
[INFO] running `"docker" "start" "-a" "9092cc67a409b03ef681acc1af67b0fb1135d359f7d60823f91925914ab7c164"`
[INFO] [stderr]     Checking hello v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused imports: `Receiver`, `Sender`
[INFO] [stderr]  --> src/main.rs:3:23
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::sync::mpsc::{Sender, Receiver};
[INFO] [stderr]   |                       ^^^^^^  ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::sync::mpsc`
[INFO] [stderr]  --> src/main.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::sync::mpsc;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]   --> src/main.rs:38:9
[INFO] [stderr]    |
[INFO] [stderr] 38 |     for i in 0..50 {
[INFO] [stderr]    |         ^ help: consider prefixing with an underscore: `_i`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `listen_on`
[INFO] [stderr]   --> src/main.rs:37:52
[INFO] [stderr]    |
[INFO] [stderr] 37 | fn listen(server_name: &str, sock: net::UdpSocket, listen_on: net::SocketAddr) {
[INFO] [stderr]    |                                                    ^^^^^^^^^ help: consider prefixing with an underscore: `_listen_on`
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Receiver`, `Sender`
[INFO] [stderr]  --> src/main.rs:3:23
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::sync::mpsc::{Sender, Receiver};
[INFO] [stderr]   |                       ^^^^^^  ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::sync::mpsc`
[INFO] [stderr]  --> src/main.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::sync::mpsc;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:44:5
[INFO] [stderr]    |
[INFO] [stderr] 44 |     sock.send_to(&msg, addr);
[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 variable: `i`
[INFO] [stderr]   --> src/main.rs:38:9
[INFO] [stderr]    |
[INFO] [stderr] 38 |     for i in 0..50 {
[INFO] [stderr]    |         ^ help: consider prefixing with an underscore: `_i`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `listen_on`
[INFO] [stderr]   --> src/main.rs:37:52
[INFO] [stderr]    |
[INFO] [stderr] 37 | fn listen(server_name: &str, sock: net::UdpSocket, listen_on: net::SocketAddr) {
[INFO] [stderr]    |                                                    ^^^^^^^^^ help: consider prefixing with an underscore: `_listen_on`
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:44:5
[INFO] [stderr]    |
[INFO] [stderr] 44 |     sock.send_to(&msg, addr);
[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]     Finished dev [unoptimized + debuginfo] target(s) in 0.55s
[INFO] running `"docker" "inspect" "9092cc67a409b03ef681acc1af67b0fb1135d359f7d60823f91925914ab7c164"`
[INFO] running `"docker" "rm" "-f" "9092cc67a409b03ef681acc1af67b0fb1135d359f7d60823f91925914ab7c164"`
[INFO] [stdout] 9092cc67a409b03ef681acc1af67b0fb1135d359f7d60823f91925914ab7c164