[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 }`
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[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c39e3a52bd9c45e3c3f4ea611bdb920a4fcfbd1f
[INFO] building nicktretyakov/federated_learning against master#c7f6aa2869acdbf014d094c6e427e554e160b6db for pr-146237-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnicktretyakov%2Ffederated_learning" "/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/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-3-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/nicktretyakov/federated_learning on toolchain c7f6aa2869acdbf014d094c6e427e554e160b6db
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "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" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] [stderr]    Compiling 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] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3m 37s
[INFO] running `Command { std: "docker" "inspect" "e2bd5e86e934ef8f2a5c6e5b7a0cbb6f083a2cd2a14366c527600aefa9fd9de2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e2bd5e86e934ef8f2a5c6e5b7a0cbb6f083a2cd2a14366c527600aefa9fd9de2", kill_on_drop: false }`
[INFO] [stdout] e2bd5e86e934ef8f2a5c6e5b7a0cbb6f083a2cd2a14366c527600aefa9fd9de2
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] be897ccbbe6d0d51d77719a61d6da423801346bdb4b082f913b8ebd70c44afc9
[INFO] running `Command { std: "docker" "start" "-a" "be897ccbbe6d0d51d77719a61d6da423801346bdb4b082f913b8ebd70c44afc9", kill_on_drop: false }`
[INFO] [stderr]    Compiling 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] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 6.16s
[INFO] running `Command { std: "docker" "inspect" "be897ccbbe6d0d51d77719a61d6da423801346bdb4b082f913b8ebd70c44afc9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "be897ccbbe6d0d51d77719a61d6da423801346bdb4b082f913b8ebd70c44afc9", kill_on_drop: false }`
[INFO] [stdout] be897ccbbe6d0d51d77719a61d6da423801346bdb4b082f913b8ebd70c44afc9