[INFO] cloning repository https://github.com/TechieQuokka/rust-websocket-chat
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/TechieQuokka/rust-websocket-chat" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTechieQuokka%2Frust-websocket-chat", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTechieQuokka%2Frust-websocket-chat'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 825f8c4a3e1cc40948ac4aca52c1779ba98a9789
[INFO] checking TechieQuokka/rust-websocket-chat against master#779e19d8baa3e3625bd4fc5c85cbb2ad47b43155 for pr-147589-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTechieQuokka%2Frust-websocket-chat" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/TechieQuokka/rust-websocket-chat
[INFO] finished tweaking git repo https://github.com/TechieQuokka/rust-websocket-chat
[INFO] tweaked toml for git repo https://github.com/TechieQuokka/rust-websocket-chat written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/TechieQuokka/rust-websocket-chat on toolchain 779e19d8baa3e3625bd4fc5c85cbb2ad47b43155
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+779e19d8baa3e3625bd4fc5c85cbb2ad47b43155" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/TechieQuokka/rust-websocket-chat 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" "+779e19d8baa3e3625bd4fc5c85cbb2ad47b43155" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+779e19d8baa3e3625bd4fc5c85cbb2ad47b43155" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dc471d3c17bda73b49769233771eba56304d80aefe6c93b3e9b0a9736f3ee085
[INFO] running `Command { std: "docker" "start" "-a" "dc471d3c17bda73b49769233771eba56304d80aefe6c93b3e9b0a9736f3ee085", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dc471d3c17bda73b49769233771eba56304d80aefe6c93b3e9b0a9736f3ee085", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dc471d3c17bda73b49769233771eba56304d80aefe6c93b3e9b0a9736f3ee085", kill_on_drop: false }`
[INFO] [stdout] dc471d3c17bda73b49769233771eba56304d80aefe6c93b3e9b0a9736f3ee085
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+779e19d8baa3e3625bd4fc5c85cbb2ad47b43155" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 862cfffd1173bd9c5cbadaa46a57bca4674a9676d1698cc9b75518fa77cf8831
[INFO] running `Command { std: "docker" "start" "-a" "862cfffd1173bd9c5cbadaa46a57bca4674a9676d1698cc9b75518fa77cf8831", kill_on_drop: false }`
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[INFO] [stdout] warning: methods `send_error` and `get_stats` are never used
[INFO] [stdout]    --> src/server/chat_engine.rs:192:18
[INFO] [stdout]     |
[INFO] [stdout]  12 | impl ChatEngine {
[INFO] [stdout]     | --------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 192 |     pub async fn send_error(&self, user_id: &str, error_message: &str) -> Result<(), anyhow::Error> {
[INFO] [stdout]     |                  ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 202 |     pub fn get_stats(&self) -> (usize, usize, usize) {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `connection_count` is never used
[INFO] [stdout]    --> src/server/connection.rs:134:12
[INFO] [stdout]     |
[INFO] [stdout]  25 | impl ConnectionManager {
[INFO] [stdout]     | ---------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 134 |     pub fn connection_count(&self) -> usize {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `send_error` and `get_stats` are never used
[INFO] [stdout]    --> src/server/chat_engine.rs:192:18
[INFO] [stdout]     |
[INFO] [stdout]  12 | impl ChatEngine {
[INFO] [stdout]     | --------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 192 |     pub async fn send_error(&self, user_id: &str, error_message: &str) -> Result<(), anyhow::Error> {
[INFO] [stdout]     |                  ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 202 |     pub fn get_stats(&self) -> (usize, usize, usize) {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `connection_count` is never used
[INFO] [stdout]    --> src/server/connection.rs:134:12
[INFO] [stdout]     |
[INFO] [stdout]  25 | impl ConnectionManager {
[INFO] [stdout]     | ---------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 134 |     pub fn connection_count(&self) -> usize {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 01s
[INFO] running `Command { std: "docker" "inspect" "862cfffd1173bd9c5cbadaa46a57bca4674a9676d1698cc9b75518fa77cf8831", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "862cfffd1173bd9c5cbadaa46a57bca4674a9676d1698cc9b75518fa77cf8831", kill_on_drop: false }`
[INFO] [stdout] 862cfffd1173bd9c5cbadaa46a57bca4674a9676d1698cc9b75518fa77cf8831