[INFO] cloning repository https://github.com/nicktretyakov/federated_learning
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/nicktretyakov/federated_learning" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnicktretyakov%2Ffederated_learning", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnicktretyakov%2Ffederated_learning'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c39e3a52bd9c45e3c3f4ea611bdb920a4fcfbd1f
[INFO] checking nicktretyakov/federated_learning against try#24e1a22664233bce1f9b5dc6eee7c1f74327e28c for pr-159343
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnicktretyakov%2Ffederated_learning" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/nicktretyakov/federated_learning
[INFO] finished tweaking git repo https://github.com/nicktretyakov/federated_learning
[INFO] tweaked toml for git repo https://github.com/nicktretyakov/federated_learning written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/nicktretyakov/federated_learning on toolchain 24e1a22664233bce1f9b5dc6eee7c1f74327e28c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+24e1a22664233bce1f9b5dc6eee7c1f74327e28c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/nicktretyakov/federated_learning 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" "+24e1a22664233bce1f9b5dc6eee7c1f74327e28c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:3d5ced03c013a94a2f102a4510f48a6e9184255caf5fd8244f58017bde7f5210" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 9f51dc2333da8aa8345b15988bf59b6786dfcf585ba3a044e2eeb92592036b84
[INFO] running `Command { std: "docker" "start" "9f51dc2333da8aa8345b15988bf59b6786dfcf585ba3a044e2eeb92592036b84", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9f51dc2333da8aa8345b15988bf59b6786dfcf585ba3a044e2eeb92592036b84", 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" "9f51dc2333da8aa8345b15988bf59b6786dfcf585ba3a044e2eeb92592036b84" "/opt/rustwide/cargo-home/bin/cargo" "+24e1a22664233bce1f9b5dc6eee7c1f74327e28c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9f51dc2333da8aa8345b15988bf59b6786dfcf585ba3a044e2eeb92592036b84", 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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-w" "/opt/rustwide/workdir" "--user" "0:0" "9f51dc2333da8aa8345b15988bf59b6786dfcf585ba3a044e2eeb92592036b84" "/opt/rustwide/cargo-home/bin/cargo" "+24e1a22664233bce1f9b5dc6eee7c1f74327e28c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
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[INFO] [stderr]     Checking federated_learning v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `discover_nodes` is never used
[INFO] [stdout]   --> src/discovery.rs:47:14
[INFO] [stdout]    |
[INFO] [stdout] 47 | pub async fn discover_nodes(etcd_endpoints: &[String]) -> Result<Vec<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: function `discover_nodes` is never used
[INFO] [stdout]   --> src/discovery.rs:47:14
[INFO] [stdout]    |
[INFO] [stdout] 47 | pub async fn discover_nodes(etcd_endpoints: &[String]) -> Result<Vec<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 57.29s
[INFO] running `Command { std: "docker" "inspect" "9f51dc2333da8aa8345b15988bf59b6786dfcf585ba3a044e2eeb92592036b84", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9f51dc2333da8aa8345b15988bf59b6786dfcf585ba3a044e2eeb92592036b84", kill_on_drop: false }`
[INFO] [stdout] 9f51dc2333da8aa8345b15988bf59b6786dfcf585ba3a044e2eeb92592036b84