[INFO] cloning repository https://github.com/cndoit18/codecrafters-kafka-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cndoit18/codecrafters-kafka-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcndoit18%2Fcodecrafters-kafka-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcndoit18%2Fcodecrafters-kafka-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6e0e1772c5d50a57208a2d7bddee478bdde8b328
[INFO] checking cndoit18/codecrafters-kafka-rust against master#db0e836148accac8a22532e3596ac612b63c2d8e for pr-139272
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcndoit18%2Fcodecrafters-kafka-rust" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/cndoit18/codecrafters-kafka-rust on toolchain db0e836148accac8a22532e3596ac612b63c2d8e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+db0e836148accac8a22532e3596ac612b63c2d8e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/cndoit18/codecrafters-kafka-rust
[INFO] finished tweaking git repo https://github.com/cndoit18/codecrafters-kafka-rust
[INFO] tweaked toml for git repo https://github.com/cndoit18/codecrafters-kafka-rust written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/cndoit18/codecrafters-kafka-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" "+db0e836148accac8a22532e3596ac612b63c2d8e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+db0e836148accac8a22532e3596ac612b63c2d8e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8e04e6553a013f7623b6d37989a669899dabde439edb34e8d32f9da674c1c408
[INFO] running `Command { std: "docker" "start" "-a" "8e04e6553a013f7623b6d37989a669899dabde439edb34e8d32f9da674c1c408", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8e04e6553a013f7623b6d37989a669899dabde439edb34e8d32f9da674c1c408", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8e04e6553a013f7623b6d37989a669899dabde439edb34e8d32f9da674c1c408", kill_on_drop: false }`
[INFO] [stdout] 8e04e6553a013f7623b6d37989a669899dabde439edb34e8d32f9da674c1c408
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+db0e836148accac8a22532e3596ac612b63c2d8e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7b3dc7ede91124434a247b97827a5038c85bb95d4370fb1f9df44d75f328d732
[INFO] running `Command { std: "docker" "start" "-a" "7b3dc7ede91124434a247b97827a5038c85bb95d4370fb1f9df44d75f328d732", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.86
[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]    Compiling thiserror v1.0.63
[INFO] [stderr]    Compiling anyhow v1.0.86
[INFO] [stderr]     Checking bytes v1.7.1
[INFO] [stderr]    Compiling quote v1.0.36
[INFO] [stderr]    Compiling syn v2.0.75
[INFO] [stderr]    Compiling thiserror-impl v1.0.63
[INFO] [stderr]     Checking codecrafters-kafka v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:258:21
[INFO] [stdout]     |
[INFO] [stdout] 258 |                 let mut f = File::open(
[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: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:262:21
[INFO] [stdout]     |
[INFO] [stdout] 262 |                 let mut metadata = ClusterMetadata::parse(f)?;
[INFO] [stdout]     |                     ----^^^^^^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple fields are never read
[INFO] [stdout]    --> src/main.rs:326:5
[INFO] [stdout]     |
[INFO] [stdout] 325 | struct ClusterMetadata {
[INFO] [stdout]     |        --------------- fields in this struct
[INFO] [stdout] 326 |     offset: u64,
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout] 327 |     partition_leader_epoch: u32,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 328 |     magic: u8,
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout] 329 |     crc: u32,
[INFO] [stdout]     |     ^^^
[INFO] [stdout] 330 |     attributes: u16,
[INFO] [stdout]     |     ^^^^^^^^^^
[INFO] [stdout] 331 |     last_offset_delta: u32,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 332 |     base_timestamp: u64,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^
[INFO] [stdout] 333 |     max_timestamp: u64,
[INFO] [stdout]     |     ^^^^^^^^^^^^^
[INFO] [stdout] 334 |     producer_id: i64,
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout] 335 |     producer_epoch: i16,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^
[INFO] [stdout] 336 |     base_sequence: i32,
[INFO] [stdout]     |     ^^^^^^^^^^^^^
[INFO] [stdout] 337 |     records: Vec<Record>,
[INFO] [stdout]     |     ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `ClusterMetadata` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `attributes`, `timestamp_dalta`, and `offset_dalta` are never read
[INFO] [stdout]    --> src/main.rs:342:5
[INFO] [stdout]     |
[INFO] [stdout] 341 | struct Record {
[INFO] [stdout]     |        ------ fields in this struct
[INFO] [stdout] 342 |     attributes: u8,
[INFO] [stdout]     |     ^^^^^^^^^^
[INFO] [stdout] 343 |     timestamp_dalta: i8,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 344 |     offset_dalta: i8,
[INFO] [stdout]     |     ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Record` 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 does not need to be mutable
[INFO] [stdout]    --> src/main.rs:258:21
[INFO] [stdout]     |
[INFO] [stdout] 258 |                 let mut f = File::open(
[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: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:262:21
[INFO] [stdout]     |
[INFO] [stdout] 262 |                 let mut metadata = ClusterMetadata::parse(f)?;
[INFO] [stdout]     |                     ----^^^^^^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple fields are never read
[INFO] [stdout]    --> src/main.rs:326:5
[INFO] [stdout]     |
[INFO] [stdout] 325 | struct ClusterMetadata {
[INFO] [stdout]     |        --------------- fields in this struct
[INFO] [stdout] 326 |     offset: u64,
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout] 327 |     partition_leader_epoch: u32,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 328 |     magic: u8,
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout] 329 |     crc: u32,
[INFO] [stdout]     |     ^^^
[INFO] [stdout] 330 |     attributes: u16,
[INFO] [stdout]     |     ^^^^^^^^^^
[INFO] [stdout] 331 |     last_offset_delta: u32,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 332 |     base_timestamp: u64,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^
[INFO] [stdout] 333 |     max_timestamp: u64,
[INFO] [stdout]     |     ^^^^^^^^^^^^^
[INFO] [stdout] 334 |     producer_id: i64,
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout] 335 |     producer_epoch: i16,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^
[INFO] [stdout] 336 |     base_sequence: i32,
[INFO] [stdout]     |     ^^^^^^^^^^^^^
[INFO] [stdout] 337 |     records: Vec<Record>,
[INFO] [stdout]     |     ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `ClusterMetadata` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `attributes`, `timestamp_dalta`, and `offset_dalta` are never read
[INFO] [stdout]    --> src/main.rs:342:5
[INFO] [stdout]     |
[INFO] [stdout] 341 | struct Record {
[INFO] [stdout]     |        ------ fields in this struct
[INFO] [stdout] 342 |     attributes: u8,
[INFO] [stdout]     |     ^^^^^^^^^^
[INFO] [stdout] 343 |     timestamp_dalta: i8,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 344 |     offset_dalta: i8,
[INFO] [stdout]     |     ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Record` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.52s
[INFO] running `Command { std: "docker" "inspect" "7b3dc7ede91124434a247b97827a5038c85bb95d4370fb1f9df44d75f328d732", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7b3dc7ede91124434a247b97827a5038c85bb95d4370fb1f9df44d75f328d732", kill_on_drop: false }`
[INFO] [stdout] 7b3dc7ede91124434a247b97827a5038c85bb95d4370fb1f9df44d75f328d732