[INFO] cloning repository https://github.com/MAKLs/rdns
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/MAKLs/rdns" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMAKLs%2Frdns", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMAKLs%2Frdns'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1a6dc91f628fccde02f4ccfcff5d7c10671d7482
[INFO] checking MAKLs/rdns against master#c9228570668803e3e6402770d55f23a12c9ae686 for pr-79472
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMAKLs%2Frdns" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/MAKLs/rdns on toolchain c9228570668803e3e6402770d55f23a12c9ae686
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c9228570668803e3e6402770d55f23a12c9ae686" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/MAKLs/rdns
[INFO] finished tweaking git repo https://github.com/MAKLs/rdns
[INFO] tweaked toml for git repo https://github.com/MAKLs/rdns written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/MAKLs/rdns already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c9228570668803e3e6402770d55f23a12c9ae686" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+c9228570668803e3e6402770d55f23a12c9ae686" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 62e422c460cf0ef612dbae637e7f5a9f0979dc801b3fbdaeecf70b8cdce2c620
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "62e422c460cf0ef612dbae637e7f5a9f0979dc801b3fbdaeecf70b8cdce2c620", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "62e422c460cf0ef612dbae637e7f5a9f0979dc801b3fbdaeecf70b8cdce2c620", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "62e422c460cf0ef612dbae637e7f5a9f0979dc801b3fbdaeecf70b8cdce2c620", kill_on_drop: false }`
[INFO] [stdout] 62e422c460cf0ef612dbae637e7f5a9f0979dc801b3fbdaeecf70b8cdce2c620
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+c9228570668803e3e6402770d55f23a12c9ae686" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 07cbb3bbc0cbbe00c2ea9ca0d8dea76bb841af1175f42f6356899fc9ccf0d045
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "07cbb3bbc0cbbe00c2ea9ca0d8dea76bb841af1175f42f6356899fc9ccf0d045", 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] [stderr]    Compiling libc v0.2.67
[INFO] [stderr]     Checking ppv-lite86 v0.2.6
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking c2-chacha v0.2.3
[INFO] [stderr]     Checking getrandom v0.1.14
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking rdns v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `ExtendingBuffer`
[INFO] [stdout]  --> src/dns/network.rs:1:51
[INFO] [stdout]   |
[INFO] [stdout] 1 | use super::buffer::{ByteBuffer, BytePacketBuffer, ExtendingBuffer, VariableBuffer};
[INFO] [stdout]   |                                                   ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `ErrorKind`, `Error`
[INFO] [stdout]  --> src/dns/network.rs:3:15
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::io::{Error, ErrorKind, Read, Result, Write};
[INFO] [stdout]   |               ^^^^^  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ExtendingBuffer`
[INFO] [stdout]  --> src/dns/network.rs:1:51
[INFO] [stdout]   |
[INFO] [stdout] 1 | use super::buffer::{ByteBuffer, BytePacketBuffer, ExtendingBuffer, VariableBuffer};
[INFO] [stdout]   |                                                   ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `ErrorKind`, `Error`
[INFO] [stdout]  --> src/dns/network.rs:3:15
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::io::{Error, ErrorKind, Read, Result, Write};
[INFO] [stdout]   |               ^^^^^  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `recursive`
[INFO] [stdout]   --> src/dns/resolver.rs:25:54
[INFO] [stdout]    |
[INFO] [stdout] 25 |     fn resolve(&self, qname: &str, qtype: QueryType, recursive: bool) -> Result<DnsPacket> {
[INFO] [stdout]    |                                                      ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_recursive`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `recursive`
[INFO] [stdout]   --> src/dns/resolver.rs:25:54
[INFO] [stdout]    |
[INFO] [stdout] 25 |     fn resolve(&self, qname: &str, qtype: QueryType, recursive: bool) -> Result<DnsPacket> {
[INFO] [stdout]    |                                                      ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_recursive`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `id`
[INFO] [stdout]   --> src/dns/server.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |     id: usize,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `id`
[INFO] [stdout]   --> src/dns/server.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |     id: usize,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.38s
[INFO] running `Command { std: "docker" "inspect" "07cbb3bbc0cbbe00c2ea9ca0d8dea76bb841af1175f42f6356899fc9ccf0d045", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "07cbb3bbc0cbbe00c2ea9ca0d8dea76bb841af1175f42f6356899fc9ccf0d045", kill_on_drop: false }`
[INFO] [stdout] 07cbb3bbc0cbbe00c2ea9ca0d8dea76bb841af1175f42f6356899fc9ccf0d045