[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#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FArkadyRudenko%2Fmaelstrom" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/ArkadyRudenko/maelstrom 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/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-tc1/source/Cargo.toml [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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded windows-targets v0.48.3 [INFO] [stderr] Downloaded windows_x86_64_gnullvm v0.48.3 [INFO] [stderr] Downloaded windows_aarch64_gnullvm v0.48.3 [INFO] [stderr] Downloaded windows_x86_64_msvc v0.48.3 [INFO] [stderr] Downloaded windows_aarch64_msvc v0.48.3 [INFO] [stderr] Downloaded windows_i686_gnu v0.48.3 [INFO] [stderr] Downloaded windows_i686_msvc v0.48.3 [INFO] [stderr] Downloaded windows_x86_64_gnu v0.48.3 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 80e8c9f5e2893990cead6386256a55298d31b2119f91411ecb6f0840680e8814 [INFO] running `Command { std: "docker" "start" "-a" "80e8c9f5e2893990cead6386256a55298d31b2119f91411ecb6f0840680e8814", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "80e8c9f5e2893990cead6386256a55298d31b2119f91411ecb6f0840680e8814", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "80e8c9f5e2893990cead6386256a55298d31b2119f91411ecb6f0840680e8814", kill_on_drop: false }` [INFO] [stdout] 80e8c9f5e2893990cead6386256a55298d31b2119f91411ecb6f0840680e8814 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 11c43f9508f735ded698add4e76de441288ca28e0184428fd079bb23b85f494f [INFO] running `Command { std: "docker" "start" "-a" "11c43f9508f735ded698add4e76de441288ca28e0184428fd079bb23b85f494f", kill_on_drop: false }` [INFO] [stderr] Checking getrandom v0.2.10 [INFO] [stderr] Checking socket2 v0.5.3 [INFO] [stderr] Compiling syn v2.0.25 [INFO] [stderr] Checking pin-project-lite v0.2.12 [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 serde_derive v1.0.171 [INFO] [stderr] Compiling tokio-macros v2.1.0 [INFO] [stderr] Checking tokio v1.32.0 [INFO] [stderr] Checking serde v1.0.171 [INFO] [stderr] Checking serde_json v1.0.102 [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>, [INFO] [stdout] | ^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [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: 3 warnings emitted [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>, [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: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 20.74s [INFO] running `Command { std: "docker" "inspect" "11c43f9508f735ded698add4e76de441288ca28e0184428fd079bb23b85f494f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "11c43f9508f735ded698add4e76de441288ca28e0184428fd079bb23b85f494f", kill_on_drop: false }` [INFO] [stdout] 11c43f9508f735ded698add4e76de441288ca28e0184428fd079bb23b85f494f