[INFO] cloning repository https://github.com/mrodden/syndicate
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mrodden/syndicate" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmrodden%2Fsyndicate", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmrodden%2Fsyndicate'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8b91cd87b32110dd53151058941c1eb3017c2437
[INFO] testing mrodden/syndicate against 1.90.0 for beta-1.91-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmrodden%2Fsyndicate" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/mrodden/syndicate
[INFO] finished tweaking git repo https://github.com/mrodden/syndicate
[INFO] tweaked toml for git repo https://github.com/mrodden/syndicate written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/mrodden/syndicate on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/mrodden/syndicate 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" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tracing-attributes v0.1.15
[INFO] [stderr]   Downloaded tracing-serde v0.1.2
[INFO] [stderr]   Downloaded matchers v0.0.1
[INFO] [stderr]   Downloaded tracing-log v0.1.2
[INFO] [stderr]   Downloaded rmp v0.8.10
[INFO] [stderr]   Downloaded rmp-serde v0.15.5
[INFO] [stderr]   Downloaded tracing-core v0.1.19
[INFO] [stderr]   Downloaded sharded-slab v0.1.3
[INFO] [stderr]   Downloaded tracing v0.1.26
[INFO] [stderr]   Downloaded serde_json v1.0.67
[INFO] [stderr]   Downloaded tracing-subscriber v0.2.20
[INFO] [stderr]   Downloaded syn v1.0.76
[INFO] [stderr]   Downloaded libc v0.2.101
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4d58832185f28d712dec8684846289715230cf7a5ae8e7b40a023b4caa5957a0
[INFO] running `Command { std: "docker" "start" "-a" "4d58832185f28d712dec8684846289715230cf7a5ae8e7b40a023b4caa5957a0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4d58832185f28d712dec8684846289715230cf7a5ae8e7b40a023b4caa5957a0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4d58832185f28d712dec8684846289715230cf7a5ae8e7b40a023b4caa5957a0", kill_on_drop: false }`
[INFO] [stdout] 4d58832185f28d712dec8684846289715230cf7a5ae8e7b40a023b4caa5957a0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 665d128ce3220fbacfa5cb1f2bd6b5039ca4b2bea5f309aa447d51ac82130bd7
[INFO] running `Command { std: "docker" "start" "-a" "665d128ce3220fbacfa5cb1f2bd6b5039ca4b2bea5f309aa447d51ac82130bd7", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.29
[INFO] [stderr]    Compiling syn v1.0.76
[INFO] [stderr]    Compiling libc v0.2.101
[INFO] [stderr]    Compiling serde_derive v1.0.130
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling tracing-core v0.1.19
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling serde_json v1.0.67
[INFO] [stderr]    Compiling regex-automata v0.1.10
[INFO] [stderr]    Compiling ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling pin-project-lite v0.2.7
[INFO] [stderr]    Compiling once_cell v1.8.0
[INFO] [stderr]    Compiling itoa v0.4.8
[INFO] [stderr]    Compiling regex v1.5.4
[INFO] [stderr]    Compiling thread_local v1.1.3
[INFO] [stderr]    Compiling tracing-log v0.1.2
[INFO] [stderr]    Compiling sharded-slab v0.1.3
[INFO] [stderr]    Compiling smallvec v1.6.1
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling ansi_term v0.12.1
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling rmp v0.8.10
[INFO] [stderr]    Compiling matchers v0.0.1
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]    Compiling tracing-attributes v0.1.15
[INFO] [stderr]    Compiling tracing v0.1.26
[INFO] [stderr]    Compiling tracing-serde v0.1.2
[INFO] [stderr]    Compiling rmp-serde v0.15.5
[INFO] [stderr]    Compiling tracing-subscriber v0.2.20
[INFO] [stderr]    Compiling syndicate v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `tracing_subscriber`
[INFO] [stdout]   --> src/client.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | use tracing_subscriber;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `SocketAddr`
[INFO] [stdout]   --> src/rpc.rs:17:16
[INFO] [stdout]    |
[INFO] [stdout] 17 | use std::net::{SocketAddr, UdpSocket};
[INFO] [stdout]    |                ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Instant`
[INFO] [stdout]   --> src/rpc.rs:18:27
[INFO] [stdout]    |
[INFO] [stdout] 18 | use std::time::{Duration, Instant};
[INFO] [stdout]    |                           ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `debug`, `error`, `info`, and `warn`
[INFO] [stdout]   --> src/rpc.rs:21:15
[INFO] [stdout]    |
[INFO] [stdout] 21 | use tracing::{debug, error, info, warn};
[INFO] [stdout]    |               ^^^^^  ^^^^^  ^^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `max`
[INFO] [stdout]   --> src/lib.rs:20:16
[INFO] [stdout]    |
[INFO] [stdout] 20 | use std::cmp::{max, min};
[INFO] [stdout]    |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ToSocketAddrs`
[INFO] [stdout]   --> src/lib.rs:23:28
[INFO] [stdout]    |
[INFO] [stdout] 23 | use std::net::{SocketAddr, ToSocketAddrs, UdpSocket};
[INFO] [stdout]    |                            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rmp_serde::Serializer`
[INFO] [stdout]   --> src/lib.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 29 | use rmp_serde::Serializer;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/lib.rs:131:17
[INFO] [stdout]     |
[INFO] [stdout] 131 |                 _ => {
[INFO] [stdout]     |                 ^ no value can reach this
[INFO] [stdout]     |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]    --> src/lib.rs:131:17
[INFO] [stdout]     |
[INFO] [stdout] 106 |                 Request::AppendEntries(r) => {
[INFO] [stdout]     |                 ------------------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 111 |                 Request::Vote(r) => {
[INFO] [stdout]     |                 ---------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 116 |                 Request::GetLog(r) => {
[INFO] [stdout]     |                 ------------------ matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 121 |                 Request::Get(r) => {
[INFO] [stdout]     |                 --------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 131 |                 _ => {
[INFO] [stdout]     |                 ^ ...and 1 other patterns collectively make this unreachable
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `leader_thread`
[INFO] [stdout]    --> src/lib.rs:162:13
[INFO] [stdout]     |
[INFO] [stdout] 162 |         let leader_thread = thread::spawn(move || {
[INFO] [stdout]     |             ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_leader_thread`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `state_sync_thread`
[INFO] [stdout]    --> src/lib.rs:167:13
[INFO] [stdout]     |
[INFO] [stdout] 167 |         let state_sync_thread = thread::spawn(move || {
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_state_sync_thread`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:252:17
[INFO] [stdout]     |
[INFO] [stdout] 252 |             let mut curr_idx = prev_log_idx + i + 1;
[INFO] [stdout]     |                 ----^^^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `servers` is never read
[INFO] [stdout]   --> src/client.rs:27:5
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub struct RaftClient {
[INFO] [stdout]    |            ---------- field in this struct
[INFO] [stdout] 27 |     servers: Vec<String>,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/lib.rs:109:21
[INFO] [stdout]     |
[INFO] [stdout] 109 |                     socket.send_to(&buf, src_addr);
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 109 |                     let _ = socket.send_to(&buf, src_addr);
[INFO] [stdout]     |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/lib.rs:114:21
[INFO] [stdout]     |
[INFO] [stdout] 114 |                     socket.send_to(&buf, src_addr);
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 114 |                     let _ = socket.send_to(&buf, src_addr);
[INFO] [stdout]     |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/lib.rs:119:21
[INFO] [stdout]     |
[INFO] [stdout] 119 |                     socket.send_to(&buf, src_addr);
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 119 |                     let _ = socket.send_to(&buf, src_addr);
[INFO] [stdout]     |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/lib.rs:124:21
[INFO] [stdout]     |
[INFO] [stdout] 124 |                     socket.send_to(&buf, src_addr);
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 124 |                     let _ = socket.send_to(&buf, src_addr);
[INFO] [stdout]     |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/lib.rs:129:21
[INFO] [stdout]     |
[INFO] [stdout] 129 |                     socket.send_to(&buf, src_addr);
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 129 |                     let _ = socket.send_to(&buf, src_addr);
[INFO] [stdout]     |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/lib.rs:132:21
[INFO] [stdout]     |
[INFO] [stdout] 132 |                     socket.send_to(b"invalid request", src_addr);
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 132 |                     let _ = socket.send_to(b"invalid request", src_addr);
[INFO] [stdout]     |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/rpc.rs:97:5
[INFO] [stdout]    |
[INFO] [stdout] 97 |     sock.set_read_timeout(Some(Duration::from_millis(50)));
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 97 |     let _ = sock.set_read_timeout(Some(Duration::from_millis(50)));
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `thread` and `time`
[INFO] [stdout]   --> src/bin/client.rs:19:16
[INFO] [stdout]    |
[INFO] [stdout] 19 | use std::{env, thread, time};
[INFO] [stdout]    |                ^^^^^^  ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/bin/client.rs:63:13
[INFO] [stdout]    |
[INFO] [stdout] 63 |             rc.update_master_addr();
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 63 |             let _ = rc.update_master_addr();
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/bin/client.rs:71:13
[INFO] [stdout]    |
[INFO] [stdout] 71 |             rc.update_master_addr();
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 71 |             let _ = rc.update_master_addr();
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 33.53s
[INFO] running `Command { std: "docker" "inspect" "665d128ce3220fbacfa5cb1f2bd6b5039ca4b2bea5f309aa447d51ac82130bd7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "665d128ce3220fbacfa5cb1f2bd6b5039ca4b2bea5f309aa447d51ac82130bd7", kill_on_drop: false }`
[INFO] [stdout] 665d128ce3220fbacfa5cb1f2bd6b5039ca4b2bea5f309aa447d51ac82130bd7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "+1.90.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9b773bdf177ff5e0d699ec91a3aa2764baa017002a1c001e262771b8cf145259
[INFO] running `Command { std: "docker" "start" "-a" "9b773bdf177ff5e0d699ec91a3aa2764baa017002a1c001e262771b8cf145259", kill_on_drop: false }`
[INFO] [stdout] warning: unused import: `tracing_subscriber`
[INFO] [stdout]   --> src/client.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | use tracing_subscriber;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `SocketAddr`
[INFO] [stdout]   --> src/rpc.rs:17:16
[INFO] [stdout]    |
[INFO] [stdout] 17 | use std::net::{SocketAddr, UdpSocket};
[INFO] [stdout]    |                ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Instant`
[INFO] [stdout]   --> src/rpc.rs:18:27
[INFO] [stdout]    |
[INFO] [stdout] 18 | use std::time::{Duration, Instant};
[INFO] [stdout]    |                           ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `debug`, `error`, `info`, and `warn`
[INFO] [stdout]   --> src/rpc.rs:21:15
[INFO] [stdout]    |
[INFO] [stdout] 21 | use tracing::{debug, error, info, warn};
[INFO] [stdout]    |               ^^^^^  ^^^^^  ^^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `max`
[INFO] [stdout]   --> src/lib.rs:20:16
[INFO] [stdout]    |
[INFO] [stdout] 20 | use std::cmp::{max, min};
[INFO] [stdout]    |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ToSocketAddrs`
[INFO] [stdout]   --> src/lib.rs:23:28
[INFO] [stdout]    |
[INFO] [stdout] 23 | use std::net::{SocketAddr, ToSocketAddrs, UdpSocket};
[INFO] [stdout]    |                            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rmp_serde::Serializer`
[INFO] [stdout]   --> src/lib.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 29 | use rmp_serde::Serializer;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/lib.rs:131:17
[INFO] [stdout]     |
[INFO] [stdout] 131 |                 _ => {
[INFO] [stdout]     |                 ^ no value can reach this
[INFO] [stdout]     |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]    --> src/lib.rs:131:17
[INFO] [stdout]     |
[INFO] [stdout] 106 |                 Request::AppendEntries(r) => {
[INFO] [stdout]     |                 ------------------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 111 |                 Request::Vote(r) => {
[INFO] [stdout]     |                 ---------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 116 |                 Request::GetLog(r) => {
[INFO] [stdout]     |                 ------------------ matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 121 |                 Request::Get(r) => {
[INFO] [stdout]     |                 --------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 131 |                 _ => {
[INFO] [stdout]     |                 ^ ...and 1 other patterns collectively make this unreachable
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `leader_thread`
[INFO] [stdout]    --> src/lib.rs:162:13
[INFO] [stdout]     |
[INFO] [stdout] 162 |         let leader_thread = thread::spawn(move || {
[INFO] [stdout]     |             ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_leader_thread`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `state_sync_thread`
[INFO] [stdout]    --> src/lib.rs:167:13
[INFO] [stdout]     |
[INFO] [stdout] 167 |         let state_sync_thread = thread::spawn(move || {
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_state_sync_thread`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:252:17
[INFO] [stdout]     |
[INFO] [stdout] 252 |             let mut curr_idx = prev_log_idx + i + 1;
[INFO] [stdout]     |                 ----^^^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `servers` is never read
[INFO] [stdout]   --> src/client.rs:27:5
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub struct RaftClient {
[INFO] [stdout]    |            ---------- field in this struct
[INFO] [stdout] 27 |     servers: Vec<String>,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/lib.rs:109:21
[INFO] [stdout]     |
[INFO] [stdout] 109 |                     socket.send_to(&buf, src_addr);
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 109 |                     let _ = socket.send_to(&buf, src_addr);
[INFO] [stdout]     |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/lib.rs:114:21
[INFO] [stdout]     |
[INFO] [stdout] 114 |                     socket.send_to(&buf, src_addr);
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 114 |                     let _ = socket.send_to(&buf, src_addr);
[INFO] [stdout]     |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/lib.rs:119:21
[INFO] [stdout]     |
[INFO] [stdout] 119 |                     socket.send_to(&buf, src_addr);
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 119 |                     let _ = socket.send_to(&buf, src_addr);
[INFO] [stdout]     |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/lib.rs:124:21
[INFO] [stdout]     |
[INFO] [stdout] 124 |                     socket.send_to(&buf, src_addr);
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 124 |                     let _ = socket.send_to(&buf, src_addr);
[INFO] [stdout]     |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/lib.rs:129:21
[INFO] [stdout]     |
[INFO] [stdout] 129 |                     socket.send_to(&buf, src_addr);
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 129 |                     let _ = socket.send_to(&buf, src_addr);
[INFO] [stdout]     |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/lib.rs:132:21
[INFO] [stdout]     |
[INFO] [stdout] 132 |                     socket.send_to(b"invalid request", src_addr);
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 132 |                     let _ = socket.send_to(b"invalid request", src_addr);
[INFO] [stdout]     |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling syndicate v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/rpc.rs:97:5
[INFO] [stdout]    |
[INFO] [stdout] 97 |     sock.set_read_timeout(Some(Duration::from_millis(50)));
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 97 |     let _ = sock.set_read_timeout(Some(Duration::from_millis(50)));
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `thread` and `time`
[INFO] [stdout]   --> src/bin/client.rs:19:16
[INFO] [stdout]    |
[INFO] [stdout] 19 | use std::{env, thread, time};
[INFO] [stdout]    |                ^^^^^^  ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `tracing_subscriber`
[INFO] [stdout]   --> src/client.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | use tracing_subscriber;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `SocketAddr`
[INFO] [stdout]   --> src/rpc.rs:17:16
[INFO] [stdout]    |
[INFO] [stdout] 17 | use std::net::{SocketAddr, UdpSocket};
[INFO] [stdout]    |                ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Instant`
[INFO] [stdout]   --> src/rpc.rs:18:27
[INFO] [stdout]    |
[INFO] [stdout] 18 | use std::time::{Duration, Instant};
[INFO] [stdout]    |                           ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `debug`, `error`, `info`, and `warn`
[INFO] [stdout]   --> src/rpc.rs:21:15
[INFO] [stdout]    |
[INFO] [stdout] 21 | use tracing::{debug, error, info, warn};
[INFO] [stdout]    |               ^^^^^  ^^^^^  ^^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `max`
[INFO] [stdout]   --> src/lib.rs:20:16
[INFO] [stdout]    |
[INFO] [stdout] 20 | use std::cmp::{max, min};
[INFO] [stdout]    |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ToSocketAddrs`
[INFO] [stdout]   --> src/lib.rs:23:28
[INFO] [stdout]    |
[INFO] [stdout] 23 | use std::net::{SocketAddr, ToSocketAddrs, UdpSocket};
[INFO] [stdout]    |                            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rmp_serde::Serializer`
[INFO] [stdout]   --> src/lib.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 29 | use rmp_serde::Serializer;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/bin/client.rs:63:13
[INFO] [stdout]    |
[INFO] [stdout] 63 |             rc.update_master_addr();
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 63 |             let _ = rc.update_master_addr();
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/bin/client.rs:71:13
[INFO] [stdout]    |
[INFO] [stdout] 71 |             rc.update_master_addr();
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 71 |             let _ = rc.update_master_addr();
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/lib.rs:131:17
[INFO] [stdout]     |
[INFO] [stdout] 131 |                 _ => {
[INFO] [stdout]     |                 ^ no value can reach this
[INFO] [stdout]     |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]    --> src/lib.rs:131:17
[INFO] [stdout]     |
[INFO] [stdout] 106 |                 Request::AppendEntries(r) => {
[INFO] [stdout]     |                 ------------------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 111 |                 Request::Vote(r) => {
[INFO] [stdout]     |                 ---------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 116 |                 Request::GetLog(r) => {
[INFO] [stdout]     |                 ------------------ matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 121 |                 Request::Get(r) => {
[INFO] [stdout]     |                 --------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 131 |                 _ => {
[INFO] [stdout]     |                 ^ ...and 1 other patterns collectively make this unreachable
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `leader_thread`
[INFO] [stdout]    --> src/lib.rs:162:13
[INFO] [stdout]     |
[INFO] [stdout] 162 |         let leader_thread = thread::spawn(move || {
[INFO] [stdout]     |             ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_leader_thread`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `state_sync_thread`
[INFO] [stdout]    --> src/lib.rs:167:13
[INFO] [stdout]     |
[INFO] [stdout] 167 |         let state_sync_thread = thread::spawn(move || {
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_state_sync_thread`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:252:17
[INFO] [stdout]     |
[INFO] [stdout] 252 |             let mut curr_idx = prev_log_idx + i + 1;
[INFO] [stdout]     |                 ----^^^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `servers` is never read
[INFO] [stdout]   --> src/client.rs:27:5
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub struct RaftClient {
[INFO] [stdout]    |            ---------- field in this struct
[INFO] [stdout] 27 |     servers: Vec<String>,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/lib.rs:109:21
[INFO] [stdout]     |
[INFO] [stdout] 109 |                     socket.send_to(&buf, src_addr);
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 109 |                     let _ = socket.send_to(&buf, src_addr);
[INFO] [stdout]     |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/lib.rs:114:21
[INFO] [stdout]     |
[INFO] [stdout] 114 |                     socket.send_to(&buf, src_addr);
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 114 |                     let _ = socket.send_to(&buf, src_addr);
[INFO] [stdout]     |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/lib.rs:119:21
[INFO] [stdout]     |
[INFO] [stdout] 119 |                     socket.send_to(&buf, src_addr);
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 119 |                     let _ = socket.send_to(&buf, src_addr);
[INFO] [stdout]     |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/lib.rs:124:21
[INFO] [stdout]     |
[INFO] [stdout] 124 |                     socket.send_to(&buf, src_addr);
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 124 |                     let _ = socket.send_to(&buf, src_addr);
[INFO] [stdout]     |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/lib.rs:129:21
[INFO] [stdout]     |
[INFO] [stdout] 129 |                     socket.send_to(&buf, src_addr);
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 129 |                     let _ = socket.send_to(&buf, src_addr);
[INFO] [stdout]     |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/lib.rs:132:21
[INFO] [stdout]     |
[INFO] [stdout] 132 |                     socket.send_to(b"invalid request", src_addr);
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 132 |                     let _ = socket.send_to(b"invalid request", src_addr);
[INFO] [stdout]     |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/rpc.rs:97:5
[INFO] [stdout]    |
[INFO] [stdout] 97 |     sock.set_read_timeout(Some(Duration::from_millis(50)));
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 97 |     let _ = sock.set_read_timeout(Some(Duration::from_millis(50)));
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.39s
[INFO] running `Command { std: "docker" "inspect" "9b773bdf177ff5e0d699ec91a3aa2764baa017002a1c001e262771b8cf145259", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9b773bdf177ff5e0d699ec91a3aa2764baa017002a1c001e262771b8cf145259", kill_on_drop: false }`
[INFO] [stdout] 9b773bdf177ff5e0d699ec91a3aa2764baa017002a1c001e262771b8cf145259
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "+1.90.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] af6000875bb16ad058b8d746410375a97f550e84cd8acebcfc79bc28e01f21f1
[INFO] running `Command { std: "docker" "start" "-a" "af6000875bb16ad058b8d746410375a97f550e84cd8acebcfc79bc28e01f21f1", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `tracing_subscriber`
[INFO] [stderr]   --> src/client.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 | use tracing_subscriber;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `SocketAddr`
[INFO] [stderr]   --> src/rpc.rs:17:16
[INFO] [stderr]    |
[INFO] [stderr] 17 | use std::net::{SocketAddr, UdpSocket};
[INFO] [stderr]    |                ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Instant`
[INFO] [stderr]   --> src/rpc.rs:18:27
[INFO] [stderr]    |
[INFO] [stderr] 18 | use std::time::{Duration, Instant};
[INFO] [stderr]    |                           ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `debug`, `error`, `info`, and `warn`
[INFO] [stderr]   --> src/rpc.rs:21:15
[INFO] [stderr]    |
[INFO] [stderr] 21 | use tracing::{debug, error, info, warn};
[INFO] [stderr]    |               ^^^^^  ^^^^^  ^^^^  ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `max`
[INFO] [stderr]   --> src/lib.rs:20:16
[INFO] [stderr]    |
[INFO] [stderr] 20 | use std::cmp::{max, min};
[INFO] [stderr]    |                ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `ToSocketAddrs`
[INFO] [stderr]   --> src/lib.rs:23:28
[INFO] [stderr]    |
[INFO] [stderr] 23 | use std::net::{SocketAddr, ToSocketAddrs, UdpSocket};
[INFO] [stderr]    |                            ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `rmp_serde::Serializer`
[INFO] [stderr]   --> src/lib.rs:29:5
[INFO] [stderr]    |
[INFO] [stderr] 29 | use rmp_serde::Serializer;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]    --> src/lib.rs:131:17
[INFO] [stderr]     |
[INFO] [stderr] 131 |                 _ => {
[INFO] [stderr]     |                 ^ no value can reach this
[INFO] [stderr]     |
[INFO] [stderr] note: multiple earlier patterns match some of the same values
[INFO] [stderr]    --> src/lib.rs:131:17
[INFO] [stderr]     |
[INFO] [stderr] 106 |                 Request::AppendEntries(r) => {
[INFO] [stderr]     |                 ------------------------- matches some of the same values
[INFO] [stderr] ...
[INFO] [stderr] 111 |                 Request::Vote(r) => {
[INFO] [stderr]     |                 ---------------- matches some of the same values
[INFO] [stderr] ...
[INFO] [stderr] 116 |                 Request::GetLog(r) => {
[INFO] [stderr]     |                 ------------------ matches some of the same values
[INFO] [stderr] ...
[INFO] [stderr] 121 |                 Request::Get(r) => {
[INFO] [stderr]     |                 --------------- matches some of the same values
[INFO] [stderr] ...
[INFO] [stderr] 131 |                 _ => {
[INFO] [stderr]     |                 ^ ...and 1 other patterns collectively make this unreachable
[INFO] [stderr]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `leader_thread`
[INFO] [stderr]    --> src/lib.rs:162:13
[INFO] [stderr]     |
[INFO] [stderr] 162 |         let leader_thread = thread::spawn(move || {
[INFO] [stderr]     |             ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_leader_thread`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `state_sync_thread`
[INFO] [stderr]    --> src/lib.rs:167:13
[INFO] [stderr]     |
[INFO] [stderr] 167 |         let state_sync_thread = thread::spawn(move || {
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_state_sync_thread`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:252:17
[INFO] [stderr]     |
[INFO] [stderr] 252 |             let mut curr_idx = prev_log_idx + i + 1;
[INFO] [stderr]     |                 ----^^^^^^^^
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field `servers` is never read
[INFO] [stderr]   --> src/client.rs:27:5
[INFO] [stderr]    |
[INFO] [stderr] 26 | pub struct RaftClient {
[INFO] [stderr]    |            ---------- field in this struct
[INFO] [stderr] 27 |     servers: Vec<String>,
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/lib.rs:109:21
[INFO] [stderr]     |
[INFO] [stderr] 109 |                     socket.send_to(&buf, src_addr);
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 109 |                     let _ = socket.send_to(&buf, src_addr);
[INFO] [stderr]     |                     +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/lib.rs:114:21
[INFO] [stderr]     |
[INFO] [stderr] 114 |                     socket.send_to(&buf, src_addr);
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 114 |                     let _ = socket.send_to(&buf, src_addr);
[INFO] [stderr]     |                     +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/lib.rs:119:21
[INFO] [stderr]     |
[INFO] [stderr] 119 |                     socket.send_to(&buf, src_addr);
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 119 |                     let _ = socket.send_to(&buf, src_addr);
[INFO] [stderr]     |                     +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/lib.rs:124:21
[INFO] [stderr]     |
[INFO] [stderr] 124 |                     socket.send_to(&buf, src_addr);
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 124 |                     let _ = socket.send_to(&buf, src_addr);
[INFO] [stderr]     |                     +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/lib.rs:129:21
[INFO] [stderr]     |
[INFO] [stderr] 129 |                     socket.send_to(&buf, src_addr);
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 129 |                     let _ = socket.send_to(&buf, src_addr);
[INFO] [stderr]     |                     +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/lib.rs:132:21
[INFO] [stderr]     |
[INFO] [stderr] 132 |                     socket.send_to(b"invalid request", src_addr);
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 132 |                     let _ = socket.send_to(b"invalid request", src_addr);
[INFO] [stderr]     |                     +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/rpc.rs:97:5
[INFO] [stderr]    |
[INFO] [stderr] 97 |     sock.set_read_timeout(Some(Duration::from_millis(50)));
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]    |
[INFO] [stderr] 97 |     let _ = sock.set_read_timeout(Some(Duration::from_millis(50)));
[INFO] [stderr]    |     +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: `syndicate` (lib) generated 19 warnings (run `cargo fix --lib -p syndicate` to apply 8 suggestions)
[INFO] [stderr] warning: `syndicate` (lib test) generated 19 warnings (19 duplicates)
[INFO] [stderr] warning: unused imports: `thread` and `time`
[INFO] [stderr]   --> src/bin/client.rs:19:16
[INFO] [stderr]    |
[INFO] [stderr] 19 | use std::{env, thread, time};
[INFO] [stderr]    |                ^^^^^^  ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/bin/client.rs:63:13
[INFO] [stderr]    |
[INFO] [stderr] 63 |             rc.update_master_addr();
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]    |
[INFO] [stderr] 63 |             let _ = rc.update_master_addr();
[INFO] [stderr]    |             +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/bin/client.rs:71:13
[INFO] [stderr]    |
[INFO] [stderr] 71 |             rc.update_master_addr();
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]    |
[INFO] [stderr] 71 |             let _ = rc.update_master_addr();
[INFO] [stderr]    |             +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: `syndicate` (bin "client" test) generated 3 warnings (run `cargo fix --bin "client" --tests` to apply 1 suggestion)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/syndicate-0d73ab802bcb9d0c)
[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] [stderr]      Running unittests src/bin/client.rs (/opt/rustwide/target/debug/deps/client-0e6a862a0b98a8e7)
[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] [stderr]      Running unittests src/bin/server.rs (/opt/rustwide/target/debug/deps/server-41eac576e99432ed)
[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] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/syndicate-9baadcae0ad7c5d6)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stderr]    Doc-tests syndicate
[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] [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" "af6000875bb16ad058b8d746410375a97f550e84cd8acebcfc79bc28e01f21f1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "af6000875bb16ad058b8d746410375a97f550e84cd8acebcfc79bc28e01f21f1", kill_on_drop: false }`
[INFO] [stdout] af6000875bb16ad058b8d746410375a97f550e84cd8acebcfc79bc28e01f21f1
