[INFO] cloning repository https://github.com/Leowbattle/dns
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Leowbattle/dns" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLeowbattle%2Fdns", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLeowbattle%2Fdns'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4f90b563520f94be55c69ad8a3caca3906ff6886
[INFO] checking Leowbattle/dns against try#3fada14ee01d755dc8076e611f11bf65b28ffd21 for pr-154971-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLeowbattle%2Fdns" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Leowbattle/dns
[INFO] finished tweaking git repo https://github.com/Leowbattle/dns
[INFO] tweaked toml for git repo https://github.com/Leowbattle/dns written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Leowbattle/dns on toolchain 3fada14ee01d755dc8076e611f11bf65b28ffd21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3fada14ee01d755dc8076e611f11bf65b28ffd21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Leowbattle/dns 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" "+3fada14ee01d755dc8076e611f11bf65b28ffd21" "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-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+3fada14ee01d755dc8076e611f11bf65b28ffd21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b29a4376753e80462add7f8bac847a2cea894d4d721e4311307b1130113d6120
[INFO] running `Command { std: "docker" "start" "-a" "b29a4376753e80462add7f8bac847a2cea894d4d721e4311307b1130113d6120", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b29a4376753e80462add7f8bac847a2cea894d4d721e4311307b1130113d6120", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b29a4376753e80462add7f8bac847a2cea894d4d721e4311307b1130113d6120", kill_on_drop: false }`
[INFO] [stdout] b29a4376753e80462add7f8bac847a2cea894d4d721e4311307b1130113d6120
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+3fada14ee01d755dc8076e611f11bf65b28ffd21" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f20001595f640fb009ae46dac6310279924ba2a059a29f2ef9be191d6836c161
[INFO] running `Command { std: "docker" "start" "-a" "f20001595f640fb009ae46dac6310279924ba2a059a29f2ef9be191d6836c161", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.73
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]     Checking ppv-lite86 v0.2.8
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking dns v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `id`, `flags`, `qcount`, `ancount`, `nscount`, and `arcount` are never read
[INFO] [stdout]   --> src/main.rs:22:2
[INFO] [stdout]    |
[INFO] [stdout] 21 | struct DnsHeader {
[INFO] [stdout]    |        --------- fields in this struct
[INFO] [stdout] 22 |     id: u16,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 23 |     flags: u16,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 24 |     qcount: u16,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 25 |     ancount: u16,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 26 |     nscount: u16,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 27 |     arcount: u16,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `DnsHeader` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `id`, `flags`, `qcount`, `ancount`, `nscount`, and `arcount` are never read
[INFO] [stdout]   --> src/main.rs:22:2
[INFO] [stdout]    |
[INFO] [stdout] 21 | struct DnsHeader {
[INFO] [stdout]    |        --------- fields in this struct
[INFO] [stdout] 22 |     id: u16,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 23 |     flags: u16,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 24 |     qcount: u16,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 25 |     ancount: u16,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 26 |     nscount: u16,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 27 |     arcount: u16,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `DnsHeader` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.91s
[INFO] running `Command { std: "docker" "inspect" "f20001595f640fb009ae46dac6310279924ba2a059a29f2ef9be191d6836c161", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f20001595f640fb009ae46dac6310279924ba2a059a29f2ef9be191d6836c161", kill_on_drop: false }`
[INFO] [stdout] f20001595f640fb009ae46dac6310279924ba2a059a29f2ef9be191d6836c161
