[INFO] cloning repository https://github.com/ArkadyRudenko/maelstrom
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ArkadyRudenko/maelstrom" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FArkadyRudenko%2Fmaelstrom", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FArkadyRudenko%2Fmaelstrom'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 98ce741f20a6aaf54410bd31edbafe072a307224
[INFO] checking ArkadyRudenko/maelstrom against master#3129d37ef7075ee3cbaa3d6cbe1b5794f67192b0 for pr-143164
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FArkadyRudenko%2Fmaelstrom" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/ArkadyRudenko/maelstrom
[INFO] finished tweaking git repo https://github.com/ArkadyRudenko/maelstrom
[INFO] tweaked toml for git repo https://github.com/ArkadyRudenko/maelstrom written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/ArkadyRudenko/maelstrom on toolchain 3129d37ef7075ee3cbaa3d6cbe1b5794f67192b0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3129d37ef7075ee3cbaa3d6cbe1b5794f67192b0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/ArkadyRudenko/maelstrom 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" "+3129d37ef7075ee3cbaa3d6cbe1b5794f67192b0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+3129d37ef7075ee3cbaa3d6cbe1b5794f67192b0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 773058cd8b52f67c5375e1e0d7cd9ebbc5c3034035ebe45ca3dce177f09c0b1a
[INFO] running `Command { std: "docker" "start" "-a" "773058cd8b52f67c5375e1e0d7cd9ebbc5c3034035ebe45ca3dce177f09c0b1a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "773058cd8b52f67c5375e1e0d7cd9ebbc5c3034035ebe45ca3dce177f09c0b1a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "773058cd8b52f67c5375e1e0d7cd9ebbc5c3034035ebe45ca3dce177f09c0b1a", kill_on_drop: false }`
[INFO] [stdout] 773058cd8b52f67c5375e1e0d7cd9ebbc5c3034035ebe45ca3dce177f09c0b1a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+3129d37ef7075ee3cbaa3d6cbe1b5794f67192b0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 111a497447f40c8e02e68cab593081bf44514a1351ad050cc95bea004d42bfa0
[INFO] running `Command { std: "docker" "start" "-a" "111a497447f40c8e02e68cab593081bf44514a1351ad050cc95bea004d42bfa0", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.147
[INFO] [stderr]    Compiling proc-macro2 v1.0.64
[INFO] [stderr]    Compiling quote v1.0.29
[INFO] [stderr]    Compiling unicode-ident v1.0.10
[INFO] [stderr]    Compiling parking_lot_core v0.9.8
[INFO] [stderr]     Checking smallvec v1.11.0
[INFO] [stderr]    Compiling serde v1.0.171
[INFO] [stderr]    Compiling serde_json v1.0.102
[INFO] [stderr]    Compiling anyhow v1.0.71
[INFO] [stderr]     Checking ryu v1.0.14
[INFO] [stderr]     Checking pin-project-lite v0.2.12
[INFO] [stderr]    Compiling lock_api v0.4.10
[INFO] [stderr]     Checking itoa v1.0.8
[INFO] [stderr]     Checking getrandom v0.2.10
[INFO] [stderr]     Checking socket2 v0.5.3
[INFO] [stderr]     Checking num_cpus v1.16.0
[INFO] [stderr]     Checking mio v0.8.8
[INFO] [stderr]     Checking signal-hook-registry v1.4.1
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]    Compiling syn v2.0.25
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]    Compiling serde_derive v1.0.171
[INFO] [stderr]    Compiling tokio-macros v2.1.0
[INFO] [stderr]     Checking tokio v1.32.0
[INFO] [stderr]     Checking maelstrom v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant `Gossip` is never constructed
[INFO] [stdout]   --> src/bin/grow_only_counter.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | enum InjectedPayload {
[INFO] [stdout]    |      --------------- variant in this enum
[INFO] [stdout] 20 |     Gossip,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `node_id`, `node_count`, and `tx` are never read
[INFO] [stdout]   --> src/bin/grow_only_counter.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 23 | struct CounterNode {
[INFO] [stdout]    |        ----------- fields in this struct
[INFO] [stdout] 24 |     id: usize,
[INFO] [stdout] 25 |     node_id: usize,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 26 |     node_count: usize,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 30 |     tx: tokio::sync::mpsc::Sender<Event<Payload, InjectedPayload>>,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Gossip` is never constructed
[INFO] [stdout]   --> src/bin/grow_only_counter.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | enum InjectedPayload {
[INFO] [stdout]    |      --------------- variant in this enum
[INFO] [stdout] 20 |     Gossip,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `node_id`, `node_count`, and `tx` are never read
[INFO] [stdout]   --> src/bin/grow_only_counter.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 23 | struct CounterNode {
[INFO] [stdout]    |        ----------- fields in this struct
[INFO] [stdout] 24 |     id: usize,
[INFO] [stdout] 25 |     node_id: usize,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 26 |     node_count: usize,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 30 |     tx: tokio::sync::mpsc::Sender<Event<Payload, InjectedPayload>>,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `topology`
[INFO] [stdout]    --> src/bin/broadcast.rs:139:41
[INFO] [stdout]     |
[INFO] [stdout] 139 |                     Payload::Topology { mut topology } => {
[INFO] [stdout]     |                                         ^^^^^^^^^^^^ help: try ignoring the field: `topology: _`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/bin/broadcast.rs:139:41
[INFO] [stdout]     |
[INFO] [stdout] 139 |                     Payload::Topology { mut topology } => {
[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/bin/broadcast.rs:141:29
[INFO] [stdout]     |
[INFO] [stdout] 141 |                         let mut id: i32 = id.parse().expect(
[INFO] [stdout]     |                             ----^^
[INFO] [stdout]     |                             |
[INFO] [stdout]     |                             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `topology`
[INFO] [stdout]    --> src/bin/broadcast.rs:139:41
[INFO] [stdout]     |
[INFO] [stdout] 139 |                     Payload::Topology { mut topology } => {
[INFO] [stdout]     |                                         ^^^^^^^^^^^^ help: try ignoring the field: `topology: _`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/bin/broadcast.rs:139:41
[INFO] [stdout]     |
[INFO] [stdout] 139 |                     Payload::Topology { mut topology } => {
[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/bin/broadcast.rs:141:29
[INFO] [stdout]     |
[INFO] [stdout] 141 |                         let mut id: i32 = id.parse().expect(
[INFO] [stdout]     |                             ----^^
[INFO] [stdout]     |                             |
[INFO] [stdout]     |                             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 15.82s
[INFO] running `Command { std: "docker" "inspect" "111a497447f40c8e02e68cab593081bf44514a1351ad050cc95bea004d42bfa0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "111a497447f40c8e02e68cab593081bf44514a1351ad050cc95bea004d42bfa0", kill_on_drop: false }`
[INFO] [stdout] 111a497447f40c8e02e68cab593081bf44514a1351ad050cc95bea004d42bfa0
