[INFO] cloning repository https://github.com/ywxt/wen
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ywxt/wen" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fywxt%2Fwen", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fywxt%2Fwen'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3febf4b2cf1ed2594c87f7f1c32d746796cd447c
[INFO] checking ywxt/wen against master#22572d0994593197593e2a1b7b18d720a9a349a7 for pr-126452-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fywxt%2Fwen" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ywxt/wen 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/ywxt/wen
[INFO] finished tweaking git repo https://github.com/ywxt/wen
[INFO] tweaked toml for git repo https://github.com/ywxt/wen written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/ywxt/wen 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 }`
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[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded yoke-derive v0.7.2
[INFO] [stderr]   Downloaded zerofrom-derive v0.1.3
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[INFO] [stderr]   Downloaded rustls v0.21.8
[INFO] [stderr]   Downloaded ring v0.17.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] fc7e9b14cce7c30d632519ee2aa9e3aa64da2ed9631a67e23747f3b1b5d7bd48
[INFO] running `Command { std: "docker" "start" "-a" "fc7e9b14cce7c30d632519ee2aa9e3aa64da2ed9631a67e23747f3b1b5d7bd48", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fc7e9b14cce7c30d632519ee2aa9e3aa64da2ed9631a67e23747f3b1b5d7bd48", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fc7e9b14cce7c30d632519ee2aa9e3aa64da2ed9631a67e23747f3b1b5d7bd48", kill_on_drop: false }`
[INFO] [stdout] fc7e9b14cce7c30d632519ee2aa9e3aa64da2ed9631a67e23747f3b1b5d7bd48
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 30f6c70a13f920fe1257159c6d8259e39dd3afcd2df7d20d681acb622c6f3327
[INFO] running `Command { std: "docker" "start" "-a" "30f6c70a13f920fe1257159c6d8259e39dd3afcd2df7d20d681acb622c6f3327", kill_on_drop: false }`
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[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/tls.rs:242:21
[INFO] [stdout]     |
[INFO] [stdout] 242 |                 let mut len = 2;
[INFO] [stdout]     |                     ----^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `from_system_config` is never used
[INFO] [stdout]   --> src/dns.rs:30:12
[INFO] [stdout]    |
[INFO] [stdout] 16 | impl DnsResolver {
[INFO] [stdout]    | ---------------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 30 |     pub fn from_system_config(ipv6_supported: bool) -> anyhow::Result<Self> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Udp`, `Tls`, and `Https` are never constructed
[INFO] [stdout]   --> src/dns.rs:60:5
[INFO] [stdout]    |
[INFO] [stdout] 59 | pub enum DnsServer {
[INFO] [stdout]    |          --------- variants in this enum
[INFO] [stdout] 60 |     Udp {
[INFO] [stdout]    |     ^^^
[INFO] [stdout] ...
[INFO] [stdout] 63 |     Tls {
[INFO] [stdout]    |     ^^^
[INFO] [stdout] ...
[INFO] [stdout] 67 |     Https {
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `DnsServer` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `create_resolver_config` is never used
[INFO] [stdout]   --> src/dns.rs:76:8
[INFO] [stdout]    |
[INFO] [stdout] 76 | pub fn create_resolver_config(dns_servers: impl IntoIterator<Item = DnsServer>) -> ResolverConfig {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/tls.rs:242:21
[INFO] [stdout]     |
[INFO] [stdout] 242 |                 let mut len = 2;
[INFO] [stdout]     |                     ----^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `from_system_config` is never used
[INFO] [stdout]   --> src/dns.rs:30:12
[INFO] [stdout]    |
[INFO] [stdout] 16 | impl DnsResolver {
[INFO] [stdout]    | ---------------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 30 |     pub fn from_system_config(ipv6_supported: bool) -> anyhow::Result<Self> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Udp`, `Tls`, and `Https` are never constructed
[INFO] [stdout]   --> src/dns.rs:60:5
[INFO] [stdout]    |
[INFO] [stdout] 59 | pub enum DnsServer {
[INFO] [stdout]    |          --------- variants in this enum
[INFO] [stdout] 60 |     Udp {
[INFO] [stdout]    |     ^^^
[INFO] [stdout] ...
[INFO] [stdout] 63 |     Tls {
[INFO] [stdout]    |     ^^^
[INFO] [stdout] ...
[INFO] [stdout] 67 |     Https {
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `DnsServer` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `create_resolver_config` is never used
[INFO] [stdout]   --> src/dns.rs:76:8
[INFO] [stdout]    |
[INFO] [stdout] 76 | pub fn create_resolver_config(dns_servers: impl IntoIterator<Item = DnsServer>) -> ResolverConfig {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 03s
[INFO] running `Command { std: "docker" "inspect" "30f6c70a13f920fe1257159c6d8259e39dd3afcd2df7d20d681acb622c6f3327", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "30f6c70a13f920fe1257159c6d8259e39dd3afcd2df7d20d681acb622c6f3327", kill_on_drop: false }`
[INFO] [stdout] 30f6c70a13f920fe1257159c6d8259e39dd3afcd2df7d20d681acb622c6f3327