[INFO] cloning repository https://github.com/jackpie2/dns-server
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jackpie2/dns-server" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjackpie2%2Fdns-server", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjackpie2%2Fdns-server'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 22707158cdaf8b0f55dc2ad5a988e883a1a10d90
[INFO] checking jackpie2/dns-server against master#4455c8937007f3cc3c078375a335d86dbab391ce for pr-140956
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjackpie2%2Fdns-server" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/jackpie2/dns-server
[INFO] finished tweaking git repo https://github.com/jackpie2/dns-server
[INFO] tweaked toml for git repo https://github.com/jackpie2/dns-server written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/jackpie2/dns-server on toolchain 4455c8937007f3cc3c078375a335d86dbab391ce
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4455c8937007f3cc3c078375a335d86dbab391ce" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/jackpie2/dns-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" "+4455c8937007f3cc3c078375a335d86dbab391ce" "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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+4455c8937007f3cc3c078375a335d86dbab391ce" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 372440b93500e6b989d5e29419289b3ba6bbbfebfbdb3b75ce6d24d64c8d9c1f
[INFO] running `Command { std: "docker" "start" "-a" "372440b93500e6b989d5e29419289b3ba6bbbfebfbdb3b75ce6d24d64c8d9c1f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "372440b93500e6b989d5e29419289b3ba6bbbfebfbdb3b75ce6d24d64c8d9c1f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "372440b93500e6b989d5e29419289b3ba6bbbfebfbdb3b75ce6d24d64c8d9c1f", kill_on_drop: false }`
[INFO] [stdout] 372440b93500e6b989d5e29419289b3ba6bbbfebfbdb3b75ce6d24d64c8d9c1f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+4455c8937007f3cc3c078375a335d86dbab391ce" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0720f4466a17f4afbc95900a12d79ce6134af2f3341805fb0a1bb716f014b0f3
[INFO] running `Command { std: "docker" "start" "-a" "0720f4466a17f4afbc95900a12d79ce6134af2f3341805fb0a1bb716f014b0f3", kill_on_drop: false }`
[INFO] [stderr]     Checking dns v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `rclass`
[INFO] [stdout]    --> src/packets/raw.rs:120:17
[INFO] [stdout]     |
[INFO] [stdout] 120 |             let rclass = (self.buffer[self.pos] as u16) << 8 | self.buffer[self.pos + 1] as u16;
[INFO] [stdout]     |                 ^^^^^^ help: if this is intentional, prefix it with an underscore: `_rclass`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_header` is never used
[INFO] [stdout]   --> src/packets/raw.rs:31:12
[INFO] [stdout]    |
[INFO] [stdout] 13 | impl RawPacket {
[INFO] [stdout]    | -------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 31 |     pub fn get_header(&self) -> [u8; 12] {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rclass`
[INFO] [stdout]    --> src/packets/raw.rs:120:17
[INFO] [stdout]     |
[INFO] [stdout] 120 |             let rclass = (self.buffer[self.pos] as u16) << 8 | self.buffer[self.pos + 1] as u16;
[INFO] [stdout]     |                 ^^^^^^ help: if this is intentional, prefix it with an underscore: `_rclass`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.18s
[INFO] running `Command { std: "docker" "inspect" "0720f4466a17f4afbc95900a12d79ce6134af2f3341805fb0a1bb716f014b0f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0720f4466a17f4afbc95900a12d79ce6134af2f3341805fb0a1bb716f014b0f3", kill_on_drop: false }`
[INFO] [stdout] 0720f4466a17f4afbc95900a12d79ce6134af2f3341805fb0a1bb716f014b0f3