[INFO] cloning repository https://github.com/sonohgong/frisco
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sonohgong/frisco" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsonohgong%2Ffrisco", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsonohgong%2Ffrisco'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4211aaa9d7275b668183ec9b7ad43f7a65403008
[INFO] checking sonohgong/frisco against master#22572d0994593197593e2a1b7b18d720a9a349a7 for pr-126452-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsonohgong%2Ffrisco" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sonohgong/frisco on toolchain 22572d0994593197593e2a1b7b18d720a9a349a7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/sonohgong/frisco
[INFO] finished tweaking git repo https://github.com/sonohgong/frisco
[INFO] tweaked toml for git repo https://github.com/sonohgong/frisco written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/sonohgong/frisco 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" "+22572d0994593197593e2a1b7b18d720a9a349a7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1dd362d16120418aa36c5452d0be7ab6ef0f28ac1e21726d6a91dbf57ac8b0fb
[INFO] running `Command { std: "docker" "start" "-a" "1dd362d16120418aa36c5452d0be7ab6ef0f28ac1e21726d6a91dbf57ac8b0fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1dd362d16120418aa36c5452d0be7ab6ef0f28ac1e21726d6a91dbf57ac8b0fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1dd362d16120418aa36c5452d0be7ab6ef0f28ac1e21726d6a91dbf57ac8b0fb", kill_on_drop: false }`
[INFO] [stdout] 1dd362d16120418aa36c5452d0be7ab6ef0f28ac1e21726d6a91dbf57ac8b0fb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6a6c56102a3a9cc048760b2611f458656b82a39e31b03819b1f03f85265f40c6
[INFO] running `Command { std: "docker" "start" "-a" "6a6c56102a3a9cc048760b2611f458656b82a39e31b03819b1f03f85265f40c6", kill_on_drop: false }`
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling libc v0.2.76
[INFO] [stderr]    Compiling httparse v1.3.4
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]     Checking dns-parser v0.8.0
[INFO] [stderr]     Checking frisco v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: for loop over an `Option`. This is more readably written as an `if let` statement
[INFO] [stdout]    --> src/main.rs:119:23
[INFO] [stdout]     |
[INFO] [stdout] 119 |         for answer in packet.answers.first() {
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(for_loops_over_fallibles)]` on by default
[INFO] [stdout] help: to check pattern in a loop use `while let`
[INFO] [stdout]     |
[INFO] [stdout] 119 |         while let Some(answer) = packet.answers.first() {
[INFO] [stdout]     |         ~~~~~~~~~~~~~~~      ~~~
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]     |
[INFO] [stdout] 119 |         if let Some(answer) = packet.answers.first() {
[INFO] [stdout]     |         ~~~~~~~~~~~~      ~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the type `*mut ifaddrs` does not permit being left uninitialized
[INFO] [stdout]   --> src/interfaces.rs:22:56
[INFO] [stdout]    |
[INFO] [stdout] 22 |             let mut ptr_ifa_head: *mut libc::ifaddrs = mem::MaybeUninit::uninit().assume_init();
[INFO] [stdout]    |                                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |                                                        |
[INFO] [stdout]    |                                                        this code causes undefined behavior when executed
[INFO] [stdout]    |                                                        help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stdout]    |
[INFO] [stdout]    = note: raw pointers must be initialized
[INFO] [stdout]    = note: `#[warn(invalid_value)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: for loop over an `Option`. This is more readably written as an `if let` statement
[INFO] [stdout]    --> src/main.rs:119:23
[INFO] [stdout]     |
[INFO] [stdout] 119 |         for answer in packet.answers.first() {
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(for_loops_over_fallibles)]` on by default
[INFO] [stdout] help: to check pattern in a loop use `while let`
[INFO] [stdout]     |
[INFO] [stdout] 119 |         while let Some(answer) = packet.answers.first() {
[INFO] [stdout]     |         ~~~~~~~~~~~~~~~      ~~~
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]     |
[INFO] [stdout] 119 |         if let Some(answer) = packet.answers.first() {
[INFO] [stdout]     |         ~~~~~~~~~~~~      ~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the type `*mut ifaddrs` does not permit being left uninitialized
[INFO] [stdout]   --> src/interfaces.rs:22:56
[INFO] [stdout]    |
[INFO] [stdout] 22 |             let mut ptr_ifa_head: *mut libc::ifaddrs = mem::MaybeUninit::uninit().assume_init();
[INFO] [stdout]    |                                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |                                                        |
[INFO] [stdout]    |                                                        this code causes undefined behavior when executed
[INFO] [stdout]    |                                                        help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stdout]    |
[INFO] [stdout]    = note: raw pointers must be initialized
[INFO] [stdout]    = note: `#[warn(invalid_value)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.18s
[INFO] running `Command { std: "docker" "inspect" "6a6c56102a3a9cc048760b2611f458656b82a39e31b03819b1f03f85265f40c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6a6c56102a3a9cc048760b2611f458656b82a39e31b03819b1f03f85265f40c6", kill_on_drop: false }`
[INFO] [stdout] 6a6c56102a3a9cc048760b2611f458656b82a39e31b03819b1f03f85265f40c6