[INFO] updating cached repository https://github.com/MAKLs/rdns
[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] [stderr] From https://github.com/MAKLs/rdns
[INFO] [stderr]    c41e8a7..6f0767a  tcp-server -> tcp-server
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 9dd6f53249911781aa3ede1346bb49af6fde9f01
[INFO] checking MAKLs/rdns against master#6dee5f1126dfd5c9314ee5ae9d9eb010e35ef257 for pr-70872
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMAKLs%2Frdns" "/workspace/builds/worker-2/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/MAKLs/rdns on toolchain 6dee5f1126dfd5c9314ee5ae9d9eb010e35ef257
[INFO] running `"/workspace/cargo-home/bin/cargo" "+6dee5f1126dfd5c9314ee5ae9d9eb010e35ef257" "read-manifest" "--manifest-path" "Cargo.toml"`
[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-2/source/Cargo.toml
[INFO] crate git repo https://github.com/MAKLs/rdns already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+6dee5f1126dfd5c9314ee5ae9d9eb010e35ef257" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+6dee5f1126dfd5c9314ee5ae9d9eb010e35ef257" "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] 9cf050c3ba7d2c64340dfdefa4ff93913782cac068ac5b40ba04cfd425c65e60
[INFO] running `"docker" "start" "-a" "9cf050c3ba7d2c64340dfdefa4ff93913782cac068ac5b40ba04cfd425c65e60"`
[INFO] [stderr]     Checking getrandom v0.1.14
[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] [stderr] warning: unused imports: `ErrorKind`, `Error`
[INFO] [stderr]  --> src/dns/network.rs:3:15
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::io::{Error, ErrorKind, Result};
[INFO] [stderr]   |               ^^^^^  ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `ErrorKind`, `Error`
[INFO] [stderr]  --> src/dns/network.rs:3:15
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::io::{Error, ErrorKind, Result};
[INFO] [stderr]   |               ^^^^^  ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `qtype`
[INFO] [stderr]   --> src/dns/network.rs:23:9
[INFO] [stderr]    |
[INFO] [stderr] 23 |         qtype: QueryType,
[INFO] [stderr]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_qtype`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `server`
[INFO] [stderr]   --> src/dns/network.rs:24:9
[INFO] [stderr]    |
[INFO] [stderr] 24 |         server: (&str, u16),
[INFO] [stderr]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_server`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `recursive`
[INFO] [stderr]   --> src/dns/network.rs:25:9
[INFO] [stderr]    |
[INFO] [stderr] 25 |         recursive: bool,
[INFO] [stderr]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_recursive`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `recursive`
[INFO] [stderr]   --> src/dns/resolver.rs:25:54
[INFO] [stderr]    |
[INFO] [stderr] 25 |     fn resolve(&self, qname: &str, qtype: QueryType, recursive: bool) -> Result<DnsPacket> {
[INFO] [stderr]    |                                                      ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_recursive`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `qtype`
[INFO] [stderr]   --> src/dns/network.rs:23:9
[INFO] [stderr]    |
[INFO] [stderr] 23 |         qtype: QueryType,
[INFO] [stderr]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_qtype`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `server`
[INFO] [stderr]   --> src/dns/network.rs:24:9
[INFO] [stderr]    |
[INFO] [stderr] 24 |         server: (&str, u16),
[INFO] [stderr]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_server`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `recursive`
[INFO] [stderr]   --> src/dns/network.rs:25:9
[INFO] [stderr]    |
[INFO] [stderr] 25 |         recursive: bool,
[INFO] [stderr]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_recursive`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `recursive`
[INFO] [stderr]   --> src/dns/resolver.rs:25:54
[INFO] [stderr]    |
[INFO] [stderr] 25 |     fn resolve(&self, qname: &str, qtype: QueryType, recursive: bool) -> Result<DnsPacket> {
[INFO] [stderr]    |                                                      ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_recursive`
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `id`
[INFO] [stderr]   --> src/dns/server.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 |     id: usize,
[INFO] [stderr]    |     ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `id`
[INFO] [stderr]   --> src/dns/server.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 |     id: usize,
[INFO] [stderr]    |     ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.45s
[INFO] running `"docker" "inspect" "9cf050c3ba7d2c64340dfdefa4ff93913782cac068ac5b40ba04cfd425c65e60"`
[INFO] running `"docker" "rm" "-f" "9cf050c3ba7d2c64340dfdefa4ff93913782cac068ac5b40ba04cfd425c65e60"`
[INFO] [stdout] 9cf050c3ba7d2c64340dfdefa4ff93913782cac068ac5b40ba04cfd425c65e60