[INFO] cloning repository https://github.com/gmelodie/distributed-systems-challenges
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/gmelodie/distributed-systems-challenges" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgmelodie%2Fdistributed-systems-challenges", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgmelodie%2Fdistributed-systems-challenges'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a7bbd85a4115bbad24a254b13beff308261bb8c4
[INFO] testing gmelodie/distributed-systems-challenges against 1.100.0-beta.1+cargoflags=--release for beta-release-1.100-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgmelodie%2Fdistributed-systems-challenges" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/gmelodie/distributed-systems-challenges
[INFO] finished tweaking git repo https://github.com/gmelodie/distributed-systems-challenges
[INFO] tweaked toml for git repo https://github.com/gmelodie/distributed-systems-challenges written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/gmelodie/distributed-systems-challenges on toolchain 1.100.0-beta.1
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.100.0-beta.1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/gmelodie/distributed-systems-challenges 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" "+1.100.0-beta.1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 7a51b09138b2ad3b7ea851d2bcc189c7123ccc9441481cc778f99a5c10ae6757
[INFO] running `Command { std: "docker" "start" "7a51b09138b2ad3b7ea851d2bcc189c7123ccc9441481cc778f99a5c10ae6757", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7a51b09138b2ad3b7ea851d2bcc189c7123ccc9441481cc778f99a5c10ae6757", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "7a51b09138b2ad3b7ea851d2bcc189c7123ccc9441481cc778f99a5c10ae6757" "/opt/rustwide/cargo-home/bin/cargo" "+1.100.0-beta.1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7a51b09138b2ad3b7ea851d2bcc189c7123ccc9441481cc778f99a5c10ae6757", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "7a51b09138b2ad3b7ea851d2bcc189c7123ccc9441481cc778f99a5c10ae6757" "/opt/rustwide/cargo-home/bin/cargo" "+1.100.0-beta.1" "build" "--frozen" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.87
[INFO] [stderr]    Compiling libc v0.2.158
[INFO] [stderr]    Compiling anyhow v1.0.89
[INFO] [stderr]    Compiling quote v1.0.37
[INFO] [stderr]    Compiling syn v2.0.79
[INFO] [stderr]    Compiling getrandom v0.2.15
[INFO] [stderr]    Compiling uuid v1.10.0
[INFO] [stderr]    Compiling serde_derive v1.0.210
[INFO] [stderr]    Compiling serde v1.0.210
[INFO] [stderr]    Compiling serde_json v1.0.128
[INFO] [stderr]    Compiling distributed-systems-challenges v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `node_ids` is never read
[INFO] [stdout]   --> src/main.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | struct Node {
[INFO] [stdout]    |        ---- field in this struct
[INFO] [stdout] 12 |     id: String,
[INFO] [stdout] 13 |     node_ids: HashSet<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 `release` profile [optimized] target(s) in 16.39s
[INFO] running `Command { std: "docker" "inspect" "7a51b09138b2ad3b7ea851d2bcc189c7123ccc9441481cc778f99a5c10ae6757", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "7a51b09138b2ad3b7ea851d2bcc189c7123ccc9441481cc778f99a5c10ae6757" "/opt/rustwide/cargo-home/bin/cargo" "+1.100.0-beta.1" "test" "--frozen" "--no-run" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stderr]    Compiling distributed-systems-challenges v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `node_ids` is never read
[INFO] [stdout]   --> src/main.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | struct Node {
[INFO] [stdout]    |        ---- field in this struct
[INFO] [stdout] 12 |     id: String,
[INFO] [stdout] 13 |     node_ids: HashSet<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 `release` profile [optimized] target(s) in 0.61s
[INFO] running `Command { std: "docker" "inspect" "7a51b09138b2ad3b7ea851d2bcc189c7123ccc9441481cc778f99a5c10ae6757", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "7a51b09138b2ad3b7ea851d2bcc189c7123ccc9441481cc778f99a5c10ae6757" "/opt/rustwide/cargo-home/bin/cargo" "+1.100.0-beta.1" "test" "--frozen" "--release", kill_on_drop: false }`
[INFO] [stderr] warning: field `node_ids` is never read
[INFO] [stderr]   --> src/main.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 11 | struct Node {
[INFO] [stderr]    |        ---- field in this struct
[INFO] [stderr] 12 |     id: String,
[INFO] [stderr] 13 |     node_ids: HashSet<String>,
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `distributed-systems-challenges` (bin "distributed-systems-challenges" test) generated 1 warning
[INFO] [stderr]     Finished `release` profile [optimized] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/release/build/distributed-systems-challenges/1fa950904a8e3bf8/out/distributed_systems_challenges-1fa950904a8e3bf8)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "7a51b09138b2ad3b7ea851d2bcc189c7123ccc9441481cc778f99a5c10ae6757", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7a51b09138b2ad3b7ea851d2bcc189c7123ccc9441481cc778f99a5c10ae6757", kill_on_drop: false }`
[INFO] [stdout] 7a51b09138b2ad3b7ea851d2bcc189c7123ccc9441481cc778f99a5c10ae6757