[INFO] updating cached repository https://github.com/bevensteven/dns-server
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 89bb9f47d2e2e14637afc3aa98b44a4c071c05c2
[INFO] checking bevensteven/dns-server against master#45d050cde277b22a755847338f2acc2c7b834141 for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbevensteven%2Fdns-server" "/workspace/builds/worker-4/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/bevensteven/dns-server on toolchain 45d050cde277b22a755847338f2acc2c7b834141
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "read-manifest" "--manifest-path" "Cargo.toml"`
[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-4/source/Cargo.toml
[INFO] crate git repo https://github.com/bevensteven/dns-server already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] b2a1bd2400f8ced48d3af12f617ae6e9bbb2ff6ba34a24e4173d6b4a296e12de
[INFO] running `"docker" "start" "-a" "b2a1bd2400f8ced48d3af12f617ae6e9bbb2ff6ba34a24e4173d6b4a296e12de"`
[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] [stderr] warning: unused variable: `server`
[INFO] [stderr]   --> src/web/server.rs:78:9
[INFO] [stderr]    |
[INFO] [stderr] 78 |     let server = ("8.8.8.8", 53);
[INFO] [stderr]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_server`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `server`
[INFO] [stderr]   --> src/web/server.rs:78:9
[INFO] [stderr]    |
[INFO] [stderr] 78 |     let server = ("8.8.8.8", 53);
[INFO] [stderr]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_server`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `write`
[INFO] [stderr]   --> src/dns/byte_packet_buffer.rs:61:5
[INFO] [stderr]    |
[INFO] [stderr] 61 |     fn write(&mut self, val: u8) -> Result<()> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `write_u8`
[INFO] [stderr]   --> src/dns/byte_packet_buffer.rs:70:5
[INFO] [stderr]    |
[INFO] [stderr] 70 |     pub fn write_u8(&mut self, val: u8) -> Result<()> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `write_u16`
[INFO] [stderr]   --> src/dns/byte_packet_buffer.rs:75:5
[INFO] [stderr]    |
[INFO] [stderr] 75 |     pub fn write_u16(&mut self, val: u16) -> Result<()> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `write_u32`
[INFO] [stderr]   --> src/dns/byte_packet_buffer.rs:81:5
[INFO] [stderr]    |
[INFO] [stderr] 81 |     pub fn write_u32(&mut self, val: u32) -> Result<()> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `set`
[INFO] [stderr]   --> src/dns/byte_packet_buffer.rs:92:5
[INFO] [stderr]    |
[INFO] [stderr] 92 |     fn set(&mut self, pos: usize, val: u8) -> Result<()> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `set_u16`
[INFO] [stderr]   --> src/dns/byte_packet_buffer.rs:98:5
[INFO] [stderr]    |
[INFO] [stderr] 98 |     pub fn set_u16(&mut self, pos: usize, val: u16) -> Result<()> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `write_qname`
[INFO] [stderr]    --> src/dns/byte_packet_buffer.rs:177:5
[INFO] [stderr]     |
[INFO] [stderr] 177 |     pub fn write_qname(&mut self, qname: &str) -> Result<()> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `write`
[INFO] [stderr]   --> src/dns/dns_header.rs:79:5
[INFO] [stderr]    |
[INFO] [stderr] 79 |     pub fn write(&mut self, buffer: &mut BytePacketBuffer) -> Result<()> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `write`
[INFO] [stderr]   --> src/dns/dns_packet.rs:60:5
[INFO] [stderr]    |
[INFO] [stderr] 60 |     pub fn write(&mut self, buffer: &mut BytePacketBuffer) -> Result<()> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_random_a`
[INFO] [stderr]   --> src/dns/dns_packet.rs:85:5
[INFO] [stderr]    |
[INFO] [stderr] 85 |     pub fn get_random_a(&self) -> Option<String> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_resolved_ns`
[INFO] [stderr]   --> src/dns/dns_packet.rs:98:5
[INFO] [stderr]    |
[INFO] [stderr] 98 |     pub fn get_resolved_ns(&self, qname: &str) -> Option<String> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_unresolved_ns`
[INFO] [stderr]    --> src/dns/dns_packet.rs:138:5
[INFO] [stderr]     |
[INFO] [stderr] 138 |     pub fn get_unresolved_ns(&self, qname: &str) -> Option<String> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `write`
[INFO] [stderr]   --> src/dns/dns_question.rs:28:5
[INFO] [stderr]    |
[INFO] [stderr] 28 |     pub fn write(&mut self, buffer: &mut BytePacketBuffer) -> Result<()> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `write`
[INFO] [stderr]    --> src/dns/dns_record.rs:150:5
[INFO] [stderr]     |
[INFO] [stderr] 150 |     pub fn write(&self, buffer: &mut BytePacketBuffer) -> Result<usize> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `to_num`
[INFO] [stderr]   --> src/dns/query_type.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     pub fn to_num(&self) -> u16 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `write`
[INFO] [stderr]   --> src/dns/byte_packet_buffer.rs:61:5
[INFO] [stderr]    |
[INFO] [stderr] 61 |     fn write(&mut self, val: u8) -> Result<()> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `write_u8`
[INFO] [stderr]   --> src/dns/byte_packet_buffer.rs:70:5
[INFO] [stderr]    |
[INFO] [stderr] 70 |     pub fn write_u8(&mut self, val: u8) -> Result<()> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `write_u16`
[INFO] [stderr]   --> src/dns/byte_packet_buffer.rs:75:5
[INFO] [stderr]    |
[INFO] [stderr] 75 |     pub fn write_u16(&mut self, val: u16) -> Result<()> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `write_u32`
[INFO] [stderr]   --> src/dns/byte_packet_buffer.rs:81:5
[INFO] [stderr]    |
[INFO] [stderr] 81 |     pub fn write_u32(&mut self, val: u32) -> Result<()> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `set`
[INFO] [stderr]   --> src/dns/byte_packet_buffer.rs:92:5
[INFO] [stderr]    |
[INFO] [stderr] 92 |     fn set(&mut self, pos: usize, val: u8) -> Result<()> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `set_u16`
[INFO] [stderr]   --> src/dns/byte_packet_buffer.rs:98:5
[INFO] [stderr]    |
[INFO] [stderr] 98 |     pub fn set_u16(&mut self, pos: usize, val: u16) -> Result<()> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `write_qname`
[INFO] [stderr]    --> src/dns/byte_packet_buffer.rs:177:5
[INFO] [stderr]     |
[INFO] [stderr] 177 |     pub fn write_qname(&mut self, qname: &str) -> Result<()> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `write`
[INFO] [stderr]   --> src/dns/dns_header.rs:79:5
[INFO] [stderr]    |
[INFO] [stderr] 79 |     pub fn write(&mut self, buffer: &mut BytePacketBuffer) -> Result<()> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `write`
[INFO] [stderr]   --> src/dns/dns_packet.rs:60:5
[INFO] [stderr]    |
[INFO] [stderr] 60 |     pub fn write(&mut self, buffer: &mut BytePacketBuffer) -> Result<()> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_random_a`
[INFO] [stderr]   --> src/dns/dns_packet.rs:85:5
[INFO] [stderr]    |
[INFO] [stderr] 85 |     pub fn get_random_a(&self) -> Option<String> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_resolved_ns`
[INFO] [stderr]   --> src/dns/dns_packet.rs:98:5
[INFO] [stderr]    |
[INFO] [stderr] 98 |     pub fn get_resolved_ns(&self, qname: &str) -> Option<String> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_unresolved_ns`
[INFO] [stderr]    --> src/dns/dns_packet.rs:138:5
[INFO] [stderr]     |
[INFO] [stderr] 138 |     pub fn get_unresolved_ns(&self, qname: &str) -> Option<String> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `write`
[INFO] [stderr]   --> src/dns/dns_question.rs:28:5
[INFO] [stderr]    |
[INFO] [stderr] 28 |     pub fn write(&mut self, buffer: &mut BytePacketBuffer) -> Result<()> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `write`
[INFO] [stderr]    --> src/dns/dns_record.rs:150:5
[INFO] [stderr]     |
[INFO] [stderr] 150 |     pub fn write(&self, buffer: &mut BytePacketBuffer) -> Result<usize> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `to_num`
[INFO] [stderr]   --> src/dns/query_type.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     pub fn to_num(&self) -> u16 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 15 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 15 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.56s
[INFO] running `"docker" "inspect" "b2a1bd2400f8ced48d3af12f617ae6e9bbb2ff6ba34a24e4173d6b4a296e12de"`
[INFO] running `"docker" "rm" "-f" "b2a1bd2400f8ced48d3af12f617ae6e9bbb2ff6ba34a24e4173d6b4a296e12de"`
[INFO] [stdout] b2a1bd2400f8ced48d3af12f617ae6e9bbb2ff6ba34a24e4173d6b4a296e12de