[INFO] cloning repository https://github.com/ckab04/codecrafters-dns-server-rust [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ckab04/codecrafters-dns-server-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fckab04%2Fcodecrafters-dns-server-rust", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fckab04%2Fcodecrafters-dns-server-rust'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 267c7f9ab8c85eb9c578403c6e3817031846b165 [INFO] checking ckab04/codecrafters-dns-server-rust against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fckab04%2Fcodecrafters-dns-server-rust" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/ckab04/codecrafters-dns-server-rust on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/ckab04/codecrafters-dns-server-rust [INFO] finished tweaking git repo https://github.com/ckab04/codecrafters-dns-server-rust [INFO] tweaked toml for git repo https://github.com/ckab04/codecrafters-dns-server-rust written to /workspace/builds/worker-2-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/ckab04/codecrafters-dns-server-rust 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] f921df32e18da7c12cb91624660ed75fa12d4f9af948d07ba8039681f3832e79 [INFO] running `Command { std: "docker" "start" "-a" "f921df32e18da7c12cb91624660ed75fa12d4f9af948d07ba8039681f3832e79", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "f921df32e18da7c12cb91624660ed75fa12d4f9af948d07ba8039681f3832e79", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f921df32e18da7c12cb91624660ed75fa12d4f9af948d07ba8039681f3832e79", kill_on_drop: false }` [INFO] [stdout] f921df32e18da7c12cb91624660ed75fa12d4f9af948d07ba8039681f3832e79 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] e640704568cc2a04dc2cd5e245ce7455b173f2a18f20c46d58e5c0646b636f9c [INFO] running `Command { std: "docker" "start" "-a" "e640704568cc2a04dc2cd5e245ce7455b173f2a18f20c46d58e5c0646b636f9c", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.24 [INFO] [stderr] Compiling libc v0.2.149 [INFO] [stderr] Compiling unicode-xid v0.2.1 [INFO] [stderr] Compiling syn v1.0.48 [INFO] [stderr] Compiling thiserror v1.0.38 [INFO] [stderr] Compiling anyhow v1.0.68 [INFO] [stderr] Checking memchr v2.6.4 [INFO] [stderr] Checking minimal-lexical v0.2.1 [INFO] [stderr] Compiling quote v1.0.7 [INFO] [stderr] Checking nom v7.1.3 [INFO] [stderr] Checking getrandom v0.2.10 [INFO] [stderr] Checking rand_core v0.6.4 [INFO] [stderr] Checking rand_chacha v0.3.1 [INFO] [stderr] Checking rand v0.8.5 [INFO] [stderr] Compiling thiserror-impl v1.0.38 [INFO] [stderr] Checking dns-starter-rust v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/message.rs:48:13 [INFO] [stdout] | [INFO] [stdout] 48 | let mut header_bytes: &[u8] = packet_data; [INFO] [stdout] | ----^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `encoded_value` is never read [INFO] [stdout] --> src/message.rs:128:17 [INFO] [stdout] | [INFO] [stdout] 128 | let mut encoded_value: Vec = Vec::new(); [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `domain_name` [INFO] [stdout] --> src/message.rs:127:26 [INFO] [stdout] | [INFO] [stdout] 127 | fn conversion(&self, domain_name: String) -> Vec{ [INFO] [stdout] | ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_domain_name` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `temp` [INFO] [stdout] --> src/main.rs:35:21 [INFO] [stdout] | [INFO] [stdout] 35 | let temp = &buf[0..size]; [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_temp` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/message.rs:48:13 [INFO] [stdout] | [INFO] [stdout] 48 | let mut header_bytes: &[u8] = packet_data; [INFO] [stdout] | ----^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `encoded_value` is never read [INFO] [stdout] --> src/message.rs:128:17 [INFO] [stdout] | [INFO] [stdout] 128 | let mut encoded_value: Vec = Vec::new(); [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `domain_name` [INFO] [stdout] --> src/message.rs:127:26 [INFO] [stdout] | [INFO] [stdout] 127 | fn conversion(&self, domain_name: String) -> Vec{ [INFO] [stdout] | ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_domain_name` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `temp` [INFO] [stdout] --> src/main.rs:35:21 [INFO] [stdout] | [INFO] [stdout] 35 | let temp = &buf[0..size]; [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_temp` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.11s [INFO] running `Command { std: "docker" "inspect" "e640704568cc2a04dc2cd5e245ce7455b173f2a18f20c46d58e5c0646b636f9c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "e640704568cc2a04dc2cd5e245ce7455b173f2a18f20c46d58e5c0646b636f9c", kill_on_drop: false }` [INFO] [stdout] e640704568cc2a04dc2cd5e245ce7455b173f2a18f20c46d58e5c0646b636f9c