[INFO] cloning repository https://github.com/bevensteven/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/bevensteven/dns-server" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbevensteven%2Fdns-server", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbevensteven%2Fdns-server'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 89bb9f47d2e2e14637afc3aa98b44a4c071c05c2
[INFO] checking bevensteven/dns-server against try#3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f for pr-87248
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbevensteven%2Fdns-server" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/bevensteven/dns-server on toolchain 3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/bevensteven/dns-server
[INFO] finished tweaking git repo https://github.com/bevensteven/dns-server
[INFO] tweaked toml for git repo https://github.com/bevensteven/dns-server written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/bevensteven/dns-server already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8d07209a9404b07e517b35787fecf55a907c67b726b45d354ed684dc64ab89cd
[INFO] running `Command { std: "docker" "start" "-a" "8d07209a9404b07e517b35787fecf55a907c67b726b45d354ed684dc64ab89cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8d07209a9404b07e517b35787fecf55a907c67b726b45d354ed684dc64ab89cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8d07209a9404b07e517b35787fecf55a907c67b726b45d354ed684dc64ab89cd", kill_on_drop: false }`
[INFO] [stdout] 8d07209a9404b07e517b35787fecf55a907c67b726b45d354ed684dc64ab89cd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b26eac3cd9ec1caf9a7039ebdb2be5db4d5df84b4db5134b32df37caf877ab26
[INFO] running `Command { std: "docker" "start" "-a" "b26eac3cd9ec1caf9a7039ebdb2be5db4d5df84b4db5134b32df37caf877ab26", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking getrandom v0.1.14
[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-server v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `server`
[INFO] [stdout]   --> src/web/server.rs:78:9
[INFO] [stdout]    |
[INFO] [stdout] 78 |     let server = ("8.8.8.8", 53);
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_server`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `server`
[INFO] [stdout]   --> src/web/server.rs:78:9
[INFO] [stdout]    |
[INFO] [stdout] 78 |     let server = ("8.8.8.8", 53);
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_server`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `write`
[INFO] [stdout]   --> src/dns/byte_packet_buffer.rs:61:8
[INFO] [stdout]    |
[INFO] [stdout] 61 |     fn write(&mut self, val: u8) -> Result<()> {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `write_u8`
[INFO] [stdout]   --> src/dns/byte_packet_buffer.rs:70:12
[INFO] [stdout]    |
[INFO] [stdout] 70 |     pub fn write_u8(&mut self, val: u8) -> Result<()> {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `write_u16`
[INFO] [stdout]   --> src/dns/byte_packet_buffer.rs:75:12
[INFO] [stdout]    |
[INFO] [stdout] 75 |     pub fn write_u16(&mut self, val: u16) -> Result<()> {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `write_u32`
[INFO] [stdout]   --> src/dns/byte_packet_buffer.rs:81:12
[INFO] [stdout]    |
[INFO] [stdout] 81 |     pub fn write_u32(&mut self, val: u32) -> Result<()> {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set`
[INFO] [stdout]   --> src/dns/byte_packet_buffer.rs:92:8
[INFO] [stdout]    |
[INFO] [stdout] 92 |     fn set(&mut self, pos: usize, val: u8) -> Result<()> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_u16`
[INFO] [stdout]   --> src/dns/byte_packet_buffer.rs:98:12
[INFO] [stdout]    |
[INFO] [stdout] 98 |     pub fn set_u16(&mut self, pos: usize, val: u16) -> Result<()> {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `write_qname`
[INFO] [stdout]    --> src/dns/byte_packet_buffer.rs:177:12
[INFO] [stdout]     |
[INFO] [stdout] 177 |     pub fn write_qname(&mut self, qname: &str) -> Result<()> {
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `write`
[INFO] [stdout]   --> src/dns/dns_header.rs:79:12
[INFO] [stdout]    |
[INFO] [stdout] 79 |     pub fn write(&mut self, buffer: &mut BytePacketBuffer) -> Result<()> {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `write`
[INFO] [stdout]   --> src/dns/dns_packet.rs:60:12
[INFO] [stdout]    |
[INFO] [stdout] 60 |     pub fn write(&mut self, buffer: &mut BytePacketBuffer) -> Result<()> {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_random_a`
[INFO] [stdout]   --> src/dns/dns_packet.rs:85:12
[INFO] [stdout]    |
[INFO] [stdout] 85 |     pub fn get_random_a(&self) -> Option<String> {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_resolved_ns`
[INFO] [stdout]   --> src/dns/dns_packet.rs:98:12
[INFO] [stdout]    |
[INFO] [stdout] 98 |     pub fn get_resolved_ns(&self, qname: &str) -> Option<String> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_unresolved_ns`
[INFO] [stdout]    --> src/dns/dns_packet.rs:138:12
[INFO] [stdout]     |
[INFO] [stdout] 138 |     pub fn get_unresolved_ns(&self, qname: &str) -> Option<String> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `write`
[INFO] [stdout]   --> src/dns/dns_question.rs:28:12
[INFO] [stdout]    |
[INFO] [stdout] 28 |     pub fn write(&mut self, buffer: &mut BytePacketBuffer) -> Result<()> {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `write`
[INFO] [stdout]    --> src/dns/dns_record.rs:150:12
[INFO] [stdout]     |
[INFO] [stdout] 150 |     pub fn write(&self, buffer: &mut BytePacketBuffer) -> Result<usize> {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `to_num`
[INFO] [stdout]   --> src/dns/query_type.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 |     pub fn to_num(&self) -> u16 {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 15 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `write`
[INFO] [stdout]   --> src/dns/byte_packet_buffer.rs:61:8
[INFO] [stdout]    |
[INFO] [stdout] 61 |     fn write(&mut self, val: u8) -> Result<()> {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `write_u8`
[INFO] [stdout]   --> src/dns/byte_packet_buffer.rs:70:12
[INFO] [stdout]    |
[INFO] [stdout] 70 |     pub fn write_u8(&mut self, val: u8) -> Result<()> {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `write_u16`
[INFO] [stdout]   --> src/dns/byte_packet_buffer.rs:75:12
[INFO] [stdout]    |
[INFO] [stdout] 75 |     pub fn write_u16(&mut self, val: u16) -> Result<()> {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `write_u32`
[INFO] [stdout]   --> src/dns/byte_packet_buffer.rs:81:12
[INFO] [stdout]    |
[INFO] [stdout] 81 |     pub fn write_u32(&mut self, val: u32) -> Result<()> {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set`
[INFO] [stdout]   --> src/dns/byte_packet_buffer.rs:92:8
[INFO] [stdout]    |
[INFO] [stdout] 92 |     fn set(&mut self, pos: usize, val: u8) -> Result<()> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_u16`
[INFO] [stdout]   --> src/dns/byte_packet_buffer.rs:98:12
[INFO] [stdout]    |
[INFO] [stdout] 98 |     pub fn set_u16(&mut self, pos: usize, val: u16) -> Result<()> {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `write_qname`
[INFO] [stdout]    --> src/dns/byte_packet_buffer.rs:177:12
[INFO] [stdout]     |
[INFO] [stdout] 177 |     pub fn write_qname(&mut self, qname: &str) -> Result<()> {
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `write`
[INFO] [stdout]   --> src/dns/dns_header.rs:79:12
[INFO] [stdout]    |
[INFO] [stdout] 79 |     pub fn write(&mut self, buffer: &mut BytePacketBuffer) -> Result<()> {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `write`
[INFO] [stdout]   --> src/dns/dns_packet.rs:60:12
[INFO] [stdout]    |
[INFO] [stdout] 60 |     pub fn write(&mut self, buffer: &mut BytePacketBuffer) -> Result<()> {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_random_a`
[INFO] [stdout]   --> src/dns/dns_packet.rs:85:12
[INFO] [stdout]    |
[INFO] [stdout] 85 |     pub fn get_random_a(&self) -> Option<String> {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_resolved_ns`
[INFO] [stdout]   --> src/dns/dns_packet.rs:98:12
[INFO] [stdout]    |
[INFO] [stdout] 98 |     pub fn get_resolved_ns(&self, qname: &str) -> Option<String> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_unresolved_ns`
[INFO] [stdout]    --> src/dns/dns_packet.rs:138:12
[INFO] [stdout]     |
[INFO] [stdout] 138 |     pub fn get_unresolved_ns(&self, qname: &str) -> Option<String> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `write`
[INFO] [stdout]   --> src/dns/dns_question.rs:28:12
[INFO] [stdout]    |
[INFO] [stdout] 28 |     pub fn write(&mut self, buffer: &mut BytePacketBuffer) -> Result<()> {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `write`
[INFO] [stdout]    --> src/dns/dns_record.rs:150:12
[INFO] [stdout]     |
[INFO] [stdout] 150 |     pub fn write(&self, buffer: &mut BytePacketBuffer) -> Result<usize> {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `to_num`
[INFO] [stdout]   --> src/dns/query_type.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 |     pub fn to_num(&self) -> u16 {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 15 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.85s
[INFO] running `Command { std: "docker" "inspect" "b26eac3cd9ec1caf9a7039ebdb2be5db4d5df84b4db5134b32df37caf877ab26", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b26eac3cd9ec1caf9a7039ebdb2be5db4d5df84b4db5134b32df37caf877ab26", kill_on_drop: false }`
[INFO] [stdout] b26eac3cd9ec1caf9a7039ebdb2be5db4d5df84b4db5134b32df37caf877ab26