[INFO] cloning repository https://github.com/MengLizhi/rust_udp_server
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/MengLizhi/rust_udp_server" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMengLizhi%2Frust_udp_server", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMengLizhi%2Frust_udp_server'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] dc5d60339e7f27f8e0b443944382b29feb4ab976
[INFO] checking MengLizhi/rust_udp_server against try#1f308f12738d8cc40bb23bf0c8114b37c164bb49 for pr-137268
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMengLizhi%2Frust_udp_server" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/MengLizhi/rust_udp_server on toolchain 1f308f12738d8cc40bb23bf0c8114b37c164bb49
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f308f12738d8cc40bb23bf0c8114b37c164bb49" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/MengLizhi/rust_udp_server
[INFO] finished tweaking git repo https://github.com/MengLizhi/rust_udp_server
[INFO] tweaked toml for git repo https://github.com/MengLizhi/rust_udp_server written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/MengLizhi/rust_udp_server already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f308f12738d8cc40bb23bf0c8114b37c164bb49" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded libc v0.2.165
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+1f308f12738d8cc40bb23bf0c8114b37c164bb49" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dc50b6e1b6c85dca720a76fb77ec260de97ef9394f5144d0c4a7c28e7fbb4079
[INFO] running `Command { std: "docker" "start" "-a" "dc50b6e1b6c85dca720a76fb77ec260de97ef9394f5144d0c4a7c28e7fbb4079", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dc50b6e1b6c85dca720a76fb77ec260de97ef9394f5144d0c4a7c28e7fbb4079", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dc50b6e1b6c85dca720a76fb77ec260de97ef9394f5144d0c4a7c28e7fbb4079", kill_on_drop: false }`
[INFO] [stdout] dc50b6e1b6c85dca720a76fb77ec260de97ef9394f5144d0c4a7c28e7fbb4079
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+1f308f12738d8cc40bb23bf0c8114b37c164bb49" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3416a26ae593d29a302fbc0a119f6922c261bed428a634cfd79a080793604823
[INFO] running `Command { std: "docker" "start" "-a" "3416a26ae593d29a302fbc0a119f6922c261bed428a634cfd79a080793604823", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.165
[INFO] [stderr]    Compiling proc-macro2 v1.0.92
[INFO] [stderr]    Compiling autocfg v1.4.0
[INFO] [stderr]    Compiling unicode-ident v1.0.14
[INFO] [stderr]    Compiling parking_lot_core v0.9.10
[INFO] [stderr]     Checking smallvec v1.13.2
[INFO] [stderr]     Checking scopeguard v1.2.0
[INFO] [stderr]     Checking bytes v1.8.0
[INFO] [stderr]     Checking pin-project-lite v0.2.15
[INFO] [stderr]     Checking futures-core v0.3.31
[INFO] [stderr]    Compiling lock_api v0.4.12
[INFO] [stderr]    Compiling quote v1.0.37
[INFO] [stderr]    Compiling syn v2.0.89
[INFO] [stderr]     Checking socket2 v0.5.7
[INFO] [stderr]     Checking signal-hook-registry v1.4.2
[INFO] [stderr]     Checking mio v1.0.2
[INFO] [stderr]     Checking parking_lot v0.12.3
[INFO] [stderr]    Compiling tokio-macros v2.4.0
[INFO] [stderr]     Checking tokio v1.41.1
[INFO] [stderr]     Checking tokio-stream v0.1.16
[INFO] [stderr]     Checking rust_udp_server v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `UdpServer` is never constructed
[INFO] [stdout]  --> src/udp_server/mod.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct UdpServer {
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `setup_udp`, and `server_init` are never used
[INFO] [stdout]   --> src/udp_server/mod.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl UdpServer {
[INFO] [stdout]    | -------------- associated items in this implementation
[INFO] [stdout] 12 |     fn new(address: SocketAddrV4) -> Result<Self, String> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 32 |     fn setup_udp(address: SocketAddrV4) -> Result<std::net::UdpSocket, String> {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 46 |     fn server_init(&self) {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `UdpServer` is never constructed
[INFO] [stdout]  --> src/udp_server/mod.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct UdpServer {
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `setup_udp`, and `server_init` are never used
[INFO] [stdout]   --> src/udp_server/mod.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl UdpServer {
[INFO] [stdout]    | -------------- associated items in this implementation
[INFO] [stdout] 12 |     fn new(address: SocketAddrV4) -> Result<Self, String> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 32 |     fn setup_udp(address: SocketAddrV4) -> Result<std::net::UdpSocket, String> {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 46 |     fn server_init(&self) {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.96s
[INFO] running `Command { std: "docker" "inspect" "3416a26ae593d29a302fbc0a119f6922c261bed428a634cfd79a080793604823", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3416a26ae593d29a302fbc0a119f6922c261bed428a634cfd79a080793604823", kill_on_drop: false }`
[INFO] [stdout] 3416a26ae593d29a302fbc0a119f6922c261bed428a634cfd79a080793604823