[INFO] cloning repository https://github.com/jprio/dns-resolver
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jprio/dns-resolver" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjprio%2Fdns-resolver", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjprio%2Fdns-resolver'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7d6b0a6a1e3e427fcda02a3b57da188cee176c71
[INFO] testing jprio/dns-resolver against try#b8e88e5ddf5521a9f43ee3f62a702388c713e4bb for pr-155114
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjprio%2Fdns-resolver" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/jprio/dns-resolver
[INFO] finished tweaking git repo https://github.com/jprio/dns-resolver
[INFO] tweaked toml for git repo https://github.com/jprio/dns-resolver written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/jprio/dns-resolver on toolchain b8e88e5ddf5521a9f43ee3f62a702388c713e4bb
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b8e88e5ddf5521a9f43ee3f62a702388c713e4bb" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/jprio/dns-resolver already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b8e88e5ddf5521a9f43ee3f62a702388c713e4bb" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] testing jprio/dns-resolver against try#b8e88e5ddf5521a9f43ee3f62a702388c713e4bb for pr-155114
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjprio%2Fdns-resolver" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/jprio/dns-resolver
[INFO] finished tweaking git repo https://github.com/jprio/dns-resolver
[INFO] tweaked toml for git repo https://github.com/jprio/dns-resolver written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/jprio/dns-resolver on toolchain b8e88e5ddf5521a9f43ee3f62a702388c713e4bb
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b8e88e5ddf5521a9f43ee3f62a702388c713e4bb" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/jprio/dns-resolver already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b8e88e5ddf5521a9f43ee3f62a702388c713e4bb" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] testing jprio/dns-resolver against try#b8e88e5ddf5521a9f43ee3f62a702388c713e4bb for pr-155114
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjprio%2Fdns-resolver" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/jprio/dns-resolver
[INFO] finished tweaking git repo https://github.com/jprio/dns-resolver
[INFO] tweaked toml for git repo https://github.com/jprio/dns-resolver written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/jprio/dns-resolver on toolchain b8e88e5ddf5521a9f43ee3f62a702388c713e4bb
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b8e88e5ddf5521a9f43ee3f62a702388c713e4bb" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/jprio/dns-resolver already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b8e88e5ddf5521a9f43ee3f62a702388c713e4bb" "fetch" "--manifest-path" "Cargo.toml", 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]  Downloading crates ...
[INFO] [stderr]   Downloaded serde v1.0.174
[INFO] [stderr]   Downloaded syn v2.0.27
[INFO] [stderr]   Downloaded serde_derive v1.0.174
[INFO] [stderr]   Downloaded byte_struct v0.9.0
[INFO] [stderr]   Downloaded byte_struct_derive v0.9.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+b8e88e5ddf5521a9f43ee3f62a702388c713e4bb" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 70b210e1c7af28a2da872aba044ed982063a3bd2996b2351894fc986d6d14af1
[INFO] running `Command { std: "docker" "start" "-a" "70b210e1c7af28a2da872aba044ed982063a3bd2996b2351894fc986d6d14af1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "70b210e1c7af28a2da872aba044ed982063a3bd2996b2351894fc986d6d14af1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "70b210e1c7af28a2da872aba044ed982063a3bd2996b2351894fc986d6d14af1", kill_on_drop: false }`
[INFO] [stdout] 70b210e1c7af28a2da872aba044ed982063a3bd2996b2351894fc986d6d14af1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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" "RUSTDOCFLAGS=--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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+b8e88e5ddf5521a9f43ee3f62a702388c713e4bb" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e0b77a4a3c285d7337b8158b41ed9cc3aa082fd467f2e1bc13da25b84229b923
[INFO] running `Command { std: "docker" "start" "-a" "e0b77a4a3c285d7337b8158b41ed9cc3aa082fd467f2e1bc13da25b84229b923", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.147
[INFO] [stderr]    Compiling proc-macro2 v1.0.66
[INFO] [stderr]    Compiling unicode-ident v1.0.11
[INFO] [stderr]    Compiling serde v1.0.174
[INFO] [stderr]    Compiling serde_derive v1.0.174
[INFO] [stderr]    Compiling quote v1.0.31
[INFO] [stderr]    Compiling getrandom v0.2.10
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling syn v2.0.27
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling byte_struct_derive v0.9.0
[INFO] [stderr]    Compiling byte_struct v0.9.0
[INFO] [stderr]    Compiling bincode v1.3.3
[INFO] [stderr]    Compiling dns-resolver v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `byte_struct::*`
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use byte_struct::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `return` value
[INFO] [stdout]   --> src/main.rs:91:12
[INFO] [stdout]    |
[INFO] [stdout] 91 |       return (
[INFO] [stdout]    |  ____________^
[INFO] [stdout] 92 | |         domain_name
[INFO] [stdout]    | |________^
[INFO] [stdout] ...
[INFO] [stdout] 96 |               .join("") + &String::from_utf8((0 as u8).to_be_bytes().to_vec()).unwrap()
[INFO] [stdout]    |  ______________________________________________________________________________________^
[INFO] [stdout] 97 | |     );
[INFO] [stdout]    | |_____^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 91 ~     return domain_name
[INFO] [stdout] 92 |             .split('.')
[INFO] [stdout] 93 |             .map(|t| String::from_utf8((t.len() as u8).to_be_bytes().to_vec()).unwrap() + t)
[INFO] [stdout] 94 |             .collect::<Vec<_>>()
[INFO] [stdout] 95 ~             .join("") + &String::from_utf8((0 as u8).to_be_bytes().to_vec()).unwrap() ;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around closure body
[INFO] [stdout]    --> src/main.rs:293:36
[INFO] [stdout]     |
[INFO] [stdout] 293 |     packet.answers.iter().find(|p| (p.type_ == TYPE_A || p.type_ == TYPE_CNAME))
[INFO] [stdout]     |                                    ^                                          ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 293 -     packet.answers.iter().find(|p| (p.type_ == TYPE_A || p.type_ == TYPE_CNAME))
[INFO] [stdout] 293 +     packet.answers.iter().find(|p| p.type_ == TYPE_A || p.type_ == TYPE_CNAME )
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:100:9
[INFO] [stdout]     |
[INFO] [stdout] 100 |     let mut query: Vec<u8> = vec![];
[INFO] [stdout]     |         ----^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `query`
[INFO] [stdout]    --> src/main.rs:100:9
[INFO] [stdout]     |
[INFO] [stdout] 100 |     let mut query: Vec<u8> = vec![];
[INFO] [stdout]     |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_query`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `q`
[INFO] [stdout]    --> src/main.rs:364:9
[INFO] [stdout]     |
[INFO] [stdout] 364 |     let q = DnsQuestion {
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_q`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `DnsAnswer` is never constructed
[INFO] [stdout]   --> src/main.rs:40:8
[INFO] [stdout]    |
[INFO] [stdout] 40 | struct DnsAnswer {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `to_bytes` is never used
[INFO] [stdout]   --> src/main.rs:80:4
[INFO] [stdout]    |
[INFO] [stdout] 80 | fn to_bytes(vec_u8: Vec<u8>) -> Vec<char> {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/main.rs:173:10
[INFO] [stdout]     |
[INFO] [stdout] 173 |     Data(Vec<u8>),
[INFO] [stdout]     |     ---- ^^^^^^^
[INFO] [stdout]     |     |
[INFO] [stdout]     |     field in this variant
[INFO] [stdout]     |
[INFO] [stdout]     = note: `DnsRecordData` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]     |
[INFO] [stdout] 173 -     Data(Vec<u8>),
[INFO] [stdout] 173 +     Data(()),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `header` and `questions` are never read
[INFO] [stdout]    --> src/main.rs:180:5
[INFO] [stdout]     |
[INFO] [stdout] 179 | struct DnsPacket {
[INFO] [stdout]     |        --------- fields in this struct
[INFO] [stdout] 180 |     header: DnsHeader,
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout] 181 |     questions: Vec<DnsQuestion>,
[INFO] [stdout]     |     ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `DnsPacket` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `class` and `ttl` are never read
[INFO] [stdout]    --> src/main.rs:236:5
[INFO] [stdout]     |
[INFO] [stdout] 233 | struct DnsRecord {
[INFO] [stdout]     |        --------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 236 |     class: u16,
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout] 237 |     ttl: u32,
[INFO] [stdout]     |     ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `DnsRecord` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `RECURSION_DESIRED` should have a snake case name
[INFO] [stdout]    --> src/main.rs:103:9
[INFO] [stdout]     |
[INFO] [stdout] 103 |     let RECURSION_DESIRED = 1 << 8;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `recursion_desired`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.38s
[INFO] running `Command { std: "docker" "inspect" "e0b77a4a3c285d7337b8158b41ed9cc3aa082fd467f2e1bc13da25b84229b923", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e0b77a4a3c285d7337b8158b41ed9cc3aa082fd467f2e1bc13da25b84229b923", kill_on_drop: false }`
[INFO] [stdout] e0b77a4a3c285d7337b8158b41ed9cc3aa082fd467f2e1bc13da25b84229b923
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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" "RUSTDOCFLAGS=--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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+b8e88e5ddf5521a9f43ee3f62a702388c713e4bb" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bffeb29778a848e6c6cb5688a201f9c0e508f860d67ed4d3a850e49d243e7845
[INFO] running `Command { std: "docker" "start" "-a" "bffeb29778a848e6c6cb5688a201f9c0e508f860d67ed4d3a850e49d243e7845", kill_on_drop: false }`
[INFO] [stderr]    Compiling dns-resolver v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `byte_struct::*`
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use byte_struct::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `return` value
[INFO] [stdout]   --> src/main.rs:91:12
[INFO] [stdout]    |
[INFO] [stdout] 91 |       return (
[INFO] [stdout]    |  ____________^
[INFO] [stdout] 92 | |         domain_name
[INFO] [stdout]    | |________^
[INFO] [stdout] ...
[INFO] [stdout] 96 |               .join("") + &String::from_utf8((0 as u8).to_be_bytes().to_vec()).unwrap()
[INFO] [stdout]    |  ______________________________________________________________________________________^
[INFO] [stdout] 97 | |     );
[INFO] [stdout]    | |_____^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 91 ~     return domain_name
[INFO] [stdout] 92 |             .split('.')
[INFO] [stdout] 93 |             .map(|t| String::from_utf8((t.len() as u8).to_be_bytes().to_vec()).unwrap() + t)
[INFO] [stdout] 94 |             .collect::<Vec<_>>()
[INFO] [stdout] 95 ~             .join("") + &String::from_utf8((0 as u8).to_be_bytes().to_vec()).unwrap() ;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around closure body
[INFO] [stdout]    --> src/main.rs:293:36
[INFO] [stdout]     |
[INFO] [stdout] 293 |     packet.answers.iter().find(|p| (p.type_ == TYPE_A || p.type_ == TYPE_CNAME))
[INFO] [stdout]     |                                    ^                                          ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 293 -     packet.answers.iter().find(|p| (p.type_ == TYPE_A || p.type_ == TYPE_CNAME))
[INFO] [stdout] 293 +     packet.answers.iter().find(|p| p.type_ == TYPE_A || p.type_ == TYPE_CNAME )
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:100:9
[INFO] [stdout]     |
[INFO] [stdout] 100 |     let mut query: Vec<u8> = vec![];
[INFO] [stdout]     |         ----^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `query`
[INFO] [stdout]    --> src/main.rs:100:9
[INFO] [stdout]     |
[INFO] [stdout] 100 |     let mut query: Vec<u8> = vec![];
[INFO] [stdout]     |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_query`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `q`
[INFO] [stdout]    --> src/main.rs:364:9
[INFO] [stdout]     |
[INFO] [stdout] 364 |     let q = DnsQuestion {
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_q`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `DnsAnswer` is never constructed
[INFO] [stdout]   --> src/main.rs:40:8
[INFO] [stdout]    |
[INFO] [stdout] 40 | struct DnsAnswer {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `to_bytes` is never used
[INFO] [stdout]   --> src/main.rs:80:4
[INFO] [stdout]    |
[INFO] [stdout] 80 | fn to_bytes(vec_u8: Vec<u8>) -> Vec<char> {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/main.rs:173:10
[INFO] [stdout]     |
[INFO] [stdout] 173 |     Data(Vec<u8>),
[INFO] [stdout]     |     ---- ^^^^^^^
[INFO] [stdout]     |     |
[INFO] [stdout]     |     field in this variant
[INFO] [stdout]     |
[INFO] [stdout]     = note: `DnsRecordData` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]     |
[INFO] [stdout] 173 -     Data(Vec<u8>),
[INFO] [stdout] 173 +     Data(()),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `header` and `questions` are never read
[INFO] [stdout]    --> src/main.rs:180:5
[INFO] [stdout]     |
[INFO] [stdout] 179 | struct DnsPacket {
[INFO] [stdout]     |        --------- fields in this struct
[INFO] [stdout] 180 |     header: DnsHeader,
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout] 181 |     questions: Vec<DnsQuestion>,
[INFO] [stdout]     |     ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `DnsPacket` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `class` and `ttl` are never read
[INFO] [stdout]    --> src/main.rs:236:5
[INFO] [stdout]     |
[INFO] [stdout] 233 | struct DnsRecord {
[INFO] [stdout]     |        --------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 236 |     class: u16,
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout] 237 |     ttl: u32,
[INFO] [stdout]     |     ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `DnsRecord` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `RECURSION_DESIRED` should have a snake case name
[INFO] [stdout]    --> src/main.rs:103:9
[INFO] [stdout]     |
[INFO] [stdout] 103 |     let RECURSION_DESIRED = 1 << 8;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `recursion_desired`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:396:9
[INFO] [stdout]     |
[INFO] [stdout] 396 |         send_query(Ipv4Addr::new(8, 8, 8, 8), "google.com", 1);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 396 |         let _ = send_query(Ipv4Addr::new(8, 8, 8, 8), "google.com", 1);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.43s
[INFO] running `Command { std: "docker" "inspect" "bffeb29778a848e6c6cb5688a201f9c0e508f860d67ed4d3a850e49d243e7845", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bffeb29778a848e6c6cb5688a201f9c0e508f860d67ed4d3a850e49d243e7845", kill_on_drop: false }`
[INFO] [stdout] bffeb29778a848e6c6cb5688a201f9c0e508f860d67ed4d3a850e49d243e7845
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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" "RUSTDOCFLAGS=--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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+b8e88e5ddf5521a9f43ee3f62a702388c713e4bb" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] c60684b4df5ddbaddfe4656c0eb1c24ed812e07246cadbc33983757461812297
[INFO] running `Command { std: "docker" "start" "-a" "c60684b4df5ddbaddfe4656c0eb1c24ed812e07246cadbc33983757461812297", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `byte_struct::*`
[INFO] [stderr]  --> src/main.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use byte_struct::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `return` value
[INFO] [stderr]   --> src/main.rs:91:12
[INFO] [stderr]    |
[INFO] [stderr] 91 |       return (
[INFO] [stderr]    |  ____________^
[INFO] [stderr] 92 | |         domain_name
[INFO] [stderr]    | |________^
[INFO] [stderr] ...
[INFO] [stderr] 96 |               .join("") + &String::from_utf8((0 as u8).to_be_bytes().to_vec()).unwrap()
[INFO] [stderr]    |  ______________________________________________________________________________________^
[INFO] [stderr] 97 | |     );
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr] 91 ~     return domain_name
[INFO] [stderr] 92 |             .split('.')
[INFO] [stderr] 93 |             .map(|t| String::from_utf8((t.len() as u8).to_be_bytes().to_vec()).unwrap() + t)
[INFO] [stderr] 94 |             .collect::<Vec<_>>()
[INFO] [stderr] 95 ~             .join("") + &String::from_utf8((0 as u8).to_be_bytes().to_vec()).unwrap() ;
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around closure body
[INFO] [stderr]    --> src/main.rs:293:36
[INFO] [stderr]     |
[INFO] [stderr] 293 |     packet.answers.iter().find(|p| (p.type_ == TYPE_A || p.type_ == TYPE_CNAME))
[INFO] [stderr]     |                                    ^                                          ^
[INFO] [stderr]     |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 293 -     packet.answers.iter().find(|p| (p.type_ == TYPE_A || p.type_ == TYPE_CNAME))
[INFO] [stderr] 293 +     packet.answers.iter().find(|p| p.type_ == TYPE_A || p.type_ == TYPE_CNAME )
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:100:9
[INFO] [stderr]     |
[INFO] [stderr] 100 |     let mut query: Vec<u8> = vec![];
[INFO] [stderr]     |         ----^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `query`
[INFO] [stderr]    --> src/main.rs:100:9
[INFO] [stderr]     |
[INFO] [stderr] 100 |     let mut query: Vec<u8> = vec![];
[INFO] [stderr]     |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_query`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `q`
[INFO] [stderr]    --> src/main.rs:364:9
[INFO] [stderr]     |
[INFO] [stderr] 364 |     let q = DnsQuestion {
[INFO] [stderr]     |         ^ help: if this is intentional, prefix it with an underscore: `_q`
[INFO] [stderr] 
[INFO] [stderr] warning: struct `DnsAnswer` is never constructed
[INFO] [stderr]   --> src/main.rs:40:8
[INFO] [stderr]    |
[INFO] [stderr] 40 | struct DnsAnswer {
[INFO] [stderr]    |        ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `to_bytes` is never used
[INFO] [stderr]   --> src/main.rs:80:4
[INFO] [stderr]    |
[INFO] [stderr] 80 | fn to_bytes(vec_u8: Vec<u8>) -> Vec<char> {
[INFO] [stderr]    |    ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field `0` is never read
[INFO] [stderr]    --> src/main.rs:173:10
[INFO] [stderr]     |
[INFO] [stderr] 173 |     Data(Vec<u8>),
[INFO] [stderr]     |     ---- ^^^^^^^
[INFO] [stderr]     |     |
[INFO] [stderr]     |     field in this variant
[INFO] [stderr]     |
[INFO] [stderr]     = note: `DnsRecordData` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stderr]     |
[INFO] [stderr] 173 -     Data(Vec<u8>),
[INFO] [stderr] 173 +     Data(()),
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: fields `header` and `questions` are never read
[INFO] [stderr]    --> src/main.rs:180:5
[INFO] [stderr]     |
[INFO] [stderr] 179 | struct DnsPacket {
[INFO] [stderr]     |        --------- fields in this struct
[INFO] [stderr] 180 |     header: DnsHeader,
[INFO] [stderr]     |     ^^^^^^
[INFO] [stderr] 181 |     questions: Vec<DnsQuestion>,
[INFO] [stderr]     |     ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `DnsPacket` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: fields `class` and `ttl` are never read
[INFO] [stderr]    --> src/main.rs:236:5
[INFO] [stderr]     |
[INFO] [stderr] 233 | struct DnsRecord {
[INFO] [stderr]     |        --------- fields in this struct
[INFO] [stderr] ...
[INFO] [stderr] 236 |     class: u16,
[INFO] [stderr]     |     ^^^^^
[INFO] [stderr] 237 |     ttl: u32,
[INFO] [stderr]     |     ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `DnsRecord` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: variable `RECURSION_DESIRED` should have a snake case name
[INFO] [stderr]    --> src/main.rs:103:9
[INFO] [stderr]     |
[INFO] [stderr] 103 |     let RECURSION_DESIRED = 1 << 8;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `recursion_desired`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> src/main.rs:396:9
[INFO] [stderr]     |
[INFO] [stderr] 396 |         send_query(Ipv4Addr::new(8, 8, 8, 8), "google.com", 1);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 396 |         let _ = send_query(Ipv4Addr::new(8, 8, 8, 8), "google.com", 1);
[INFO] [stderr]     |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: `dns-resolver` (bin "dns-resolver" test) generated 13 warnings (run `cargo fix --bin "dns-resolver" -p dns-resolver --tests` to apply 6 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/dns_resolver-ce28893981967b44)
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test tests::test_dnsheader_to_bytes ... ok
[INFO] [stdout] test tests::test_build_query ... ok
[INFO] [stdout] test tests::test_send_query ... ok
[INFO] [stdout] test tests::test_encode_domain_name ... ok
[INFO] [stdout] test tests::test_to_bytes ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "c60684b4df5ddbaddfe4656c0eb1c24ed812e07246cadbc33983757461812297", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c60684b4df5ddbaddfe4656c0eb1c24ed812e07246cadbc33983757461812297", kill_on_drop: false }`
[INFO] [stdout] c60684b4df5ddbaddfe4656c0eb1c24ed812e07246cadbc33983757461812297
