[INFO] cloning repository https://github.com/yxu399/Redis-Clone
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/yxu399/Redis-Clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyxu399%2FRedis-Clone", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyxu399%2FRedis-Clone'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1d302288cffef9dbc929c16e58ff445102d86efc
[INFO] checking yxu399/Redis-Clone against try#0611f7de057c584b8771102fde7aed6c70c71d3b for pr-146440
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyxu399%2FRedis-Clone" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/yxu399/Redis-Clone
[INFO] finished tweaking git repo https://github.com/yxu399/Redis-Clone
[INFO] tweaked toml for git repo https://github.com/yxu399/Redis-Clone written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/yxu399/Redis-Clone on toolchain 0611f7de057c584b8771102fde7aed6c70c71d3b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/yxu399/Redis-Clone 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" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tonic-build v0.10.2
[INFO] [stderr]   Downloaded tonic v0.10.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b8124b75491331238b045aa455c1db8d37e0216b44b24c86560b7d5be614f483
[INFO] running `Command { std: "docker" "start" "-a" "b8124b75491331238b045aa455c1db8d37e0216b44b24c86560b7d5be614f483", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b8124b75491331238b045aa455c1db8d37e0216b44b24c86560b7d5be614f483", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b8124b75491331238b045aa455c1db8d37e0216b44b24c86560b7d5be614f483", kill_on_drop: false }`
[INFO] [stdout] b8124b75491331238b045aa455c1db8d37e0216b44b24c86560b7d5be614f483
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1eda6bfce91ef5850bc34f5dfaa79d1d464e211a49ee4a002169e5f67a52c603
[INFO] running `Command { std: "docker" "start" "-a" "1eda6bfce91ef5850bc34f5dfaa79d1d464e211a49ee4a002169e5f67a52c603", kill_on_drop: false }`
[INFO] [stderr]     Checking smallvec v1.15.1
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[INFO] [stderr]    Compiling anyhow v1.0.100
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[INFO] [stderr]     Checking serde v1.0.228
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[INFO] [stderr]     Checking futures v0.3.31
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]    Compiling redis-clone v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking tokio-util v0.7.17
[INFO] [stderr]     Checking tokio-io-timeout v1.2.1
[INFO] [stderr]     Checking tokio-stream v0.1.17
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[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/raft_node.rs:120:13
[INFO] [stdout]     |
[INFO] [stdout] 120 |         let mut state = self.state.lock().unwrap();
[INFO] [stdout]     |             ----^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `term` is never read
[INFO] [stdout]    --> src/raft_node.rs:168:24
[INFO] [stdout]     |
[INFO] [stdout] 168 |         let mut term = 0;
[INFO] [stdout]     |                        ^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 177 |             term = new_term;
[INFO] [stdout]     |             --------------- `term` is overwritten here before the previous value is read
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/raft_node.rs:347:25
[INFO] [stdout]     |
[INFO] [stdout] 347 |                     Err(e) => {
[INFO] [stdout]     |                         ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `voted_for` is never read
[INFO] [stdout]    --> src/raft_node.rs:400:13
[INFO] [stdout]     |
[INFO] [stdout] 400 |             voted_for = self.voted_for.lock().unwrap();
[INFO] [stdout]     |             ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/raft_node.rs:120:13
[INFO] [stdout]     |
[INFO] [stdout] 120 |         let mut state = self.state.lock().unwrap();
[INFO] [stdout]     |             ----^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `term` is never read
[INFO] [stdout]    --> src/raft_node.rs:168:24
[INFO] [stdout]     |
[INFO] [stdout] 168 |         let mut term = 0;
[INFO] [stdout]     |                        ^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 177 |             term = new_term;
[INFO] [stdout]     |             --------------- `term` is overwritten here before the previous value is read
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/raft_node.rs:347:25
[INFO] [stdout]     |
[INFO] [stdout] 347 |                     Err(e) => {
[INFO] [stdout]     |                         ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `voted_for` is never read
[INFO] [stdout]    --> src/raft_node.rs:400:13
[INFO] [stdout]     |
[INFO] [stdout] 400 |             voted_for = self.voted_for.lock().unwrap();
[INFO] [stdout]     |             ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 46.81s
[INFO] running `Command { std: "docker" "inspect" "1eda6bfce91ef5850bc34f5dfaa79d1d464e211a49ee4a002169e5f67a52c603", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1eda6bfce91ef5850bc34f5dfaa79d1d464e211a49ee4a002169e5f67a52c603", kill_on_drop: false }`
[INFO] [stdout] 1eda6bfce91ef5850bc34f5dfaa79d1d464e211a49ee4a002169e5f67a52c603