[INFO] cloning repository https://github.com/kumarmo2/maelstorm-soln
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kumarmo2/maelstorm-soln" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkumarmo2%2Fmaelstorm-soln", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkumarmo2%2Fmaelstorm-soln'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 801b0f99a5068489154371233f0c9ff710e77bfc
[INFO] checking kumarmo2/maelstorm-soln against 1.95.0 for pr-155915
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkumarmo2%2Fmaelstorm-soln" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/kumarmo2/maelstorm-soln
[INFO] finished tweaking git repo https://github.com/kumarmo2/maelstorm-soln
[INFO] tweaked toml for git repo https://github.com/kumarmo2/maelstorm-soln written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/kumarmo2/maelstorm-soln on toolchain 1.95.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/kumarmo2/maelstorm-soln 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" "+1.95.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded serde v1.0.159
[INFO] [stderr]   Downloaded serde_derive v1.0.159
[INFO] [stderr]   Downloaded syn v2.0.13
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8a3765a62b8b934368a335ca403484f6d40cfb1f73fe38cf3c422d40aa599357
[INFO] running `Command { std: "docker" "start" "-a" "8a3765a62b8b934368a335ca403484f6d40cfb1f73fe38cf3c422d40aa599357", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8a3765a62b8b934368a335ca403484f6d40cfb1f73fe38cf3c422d40aa599357", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8a3765a62b8b934368a335ca403484f6d40cfb1f73fe38cf3c422d40aa599357", kill_on_drop: false }`
[INFO] [stdout] 8a3765a62b8b934368a335ca403484f6d40cfb1f73fe38cf3c422d40aa599357
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 107ea472e1d2cd7ce8079f3328a37e5521bbb82699341ac5f722c07563accdf7
[INFO] running `Command { std: "docker" "start" "-a" "107ea472e1d2cd7ce8079f3328a37e5521bbb82699341ac5f722c07563accdf7", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.56
[INFO] [stderr]    Compiling quote v1.0.26
[INFO] [stderr]    Compiling serde_derive v1.0.159
[INFO] [stderr]    Compiling serde v1.0.159
[INFO] [stderr]    Compiling anyhow v1.0.70
[INFO] [stderr]     Checking itoa v1.0.6
[INFO] [stderr]     Checking ryu v1.0.13
[INFO] [stderr]    Compiling serde_json v1.0.96
[INFO] [stderr]    Compiling syn v2.0.13
[INFO] [stderr]     Checking maelstrom-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `node_id` is never read
[INFO] [stdout]  --> src/bin/echo.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | struct EchoNode {
[INFO] [stdout]   |        -------- field in this struct
[INFO] [stdout] 9 |     node_id: String,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `node_id` is never read
[INFO] [stdout]  --> src/bin/echo.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | struct EchoNode {
[INFO] [stdout]   |        -------- field in this struct
[INFO] [stdout] 9 |     node_id: String,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 11.48s
[INFO] running `Command { std: "docker" "inspect" "107ea472e1d2cd7ce8079f3328a37e5521bbb82699341ac5f722c07563accdf7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "107ea472e1d2cd7ce8079f3328a37e5521bbb82699341ac5f722c07563accdf7", kill_on_drop: false }`
[INFO] [stdout] 107ea472e1d2cd7ce8079f3328a37e5521bbb82699341ac5f722c07563accdf7
