[INFO] updating cached repository https://github.com/MAKLs/rdns
[INFO] running `Command { std: "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", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1a6dc91f628fccde02f4ccfcff5d7c10671d7482
[INFO] checking MAKLs/rdns against try#c8bdaa84ec1b37f18f30375e196a65b7602f3790 for pr-73345
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMAKLs%2Frdns" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/MAKLs/rdns on toolchain c8bdaa84ec1b37f18f30375e196a65b7602f3790
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c8bdaa84ec1b37f18f30375e196a65b7602f3790" "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-1/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" "+c8bdaa84ec1b37f18f30375e196a65b7602f3790" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:6c9ffe128752d56c8d75334ed354142a5229917ed99767f56566dd8e857ad726" "/opt/rustwide/cargo-home/bin/cargo" "+c8bdaa84ec1b37f18f30375e196a65b7602f3790" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] c853e2cc484c182324e4c8bcc0447853d1df1f90cc2adb34bc28924f8793f5ae
[INFO] running `Command { std: "docker" "start" "-a" "c853e2cc484c182324e4c8bcc0447853d1df1f90cc2adb34bc28924f8793f5ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c853e2cc484c182324e4c8bcc0447853d1df1f90cc2adb34bc28924f8793f5ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c853e2cc484c182324e4c8bcc0447853d1df1f90cc2adb34bc28924f8793f5ae", kill_on_drop: false }`
[INFO] [stdout] c853e2cc484c182324e4c8bcc0447853d1df1f90cc2adb34bc28924f8793f5ae
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:6c9ffe128752d56c8d75334ed354142a5229917ed99767f56566dd8e857ad726" "/opt/rustwide/cargo-home/bin/cargo" "+c8bdaa84ec1b37f18f30375e196a65b7602f3790" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 363fdefc5b9b78c0f3fcef0174fcb7fbf10ab2acc74b176ddf51f29a8843079b
[INFO] running `Command { std: "docker" "start" "-a" "363fdefc5b9b78c0f3fcef0174fcb7fbf10ab2acc74b176ddf51f29a8843079b", kill_on_drop: false }`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling libc v0.2.67
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking ansi_term v0.11.0
[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 9.41s
[INFO] running `Command { std: "docker" "inspect" "363fdefc5b9b78c0f3fcef0174fcb7fbf10ab2acc74b176ddf51f29a8843079b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "363fdefc5b9b78c0f3fcef0174fcb7fbf10ab2acc74b176ddf51f29a8843079b", kill_on_drop: false }`
[INFO] [stdout] 363fdefc5b9b78c0f3fcef0174fcb7fbf10ab2acc74b176ddf51f29a8843079b