[INFO] cloning repository https://github.com/JpJpDog/min_kademlia
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/JpJpDog/min_kademlia" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJpJpDog%2Fmin_kademlia", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJpJpDog%2Fmin_kademlia'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9aeafa08cfc591293987fc5691b0636b57ebfb4c
[INFO] checking JpJpDog/min_kademlia against master#a5f164faad4a2fed606b8160fd7ecd2d5cbba381 for pr-84920
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJpJpDog%2Fmin_kademlia" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/JpJpDog/min_kademlia on toolchain a5f164faad4a2fed606b8160fd7ecd2d5cbba381
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/JpJpDog/min_kademlia
[INFO] finished tweaking git repo https://github.com/JpJpDog/min_kademlia
[INFO] tweaked toml for git repo https://github.com/JpJpDog/min_kademlia written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4bcba8b30e5c28592012d7860db7ff8a518078e09d1eb89879603a1c7b1dd132
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "4bcba8b30e5c28592012d7860db7ff8a518078e09d1eb89879603a1c7b1dd132", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4bcba8b30e5c28592012d7860db7ff8a518078e09d1eb89879603a1c7b1dd132", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4bcba8b30e5c28592012d7860db7ff8a518078e09d1eb89879603a1c7b1dd132", kill_on_drop: false }`
[INFO] [stdout] 4bcba8b30e5c28592012d7860db7ff8a518078e09d1eb89879603a1c7b1dd132
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 27c5a1154f1fcb7842c061550057083519a2e34505a9e49367929fd4f153b399
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "27c5a1154f1fcb7842c061550057083519a2e34505a9e49367929fd4f153b399", 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v1.0.26
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling serde v1.0.125
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]     Checking getrandom v0.2.2
[INFO] [stderr]     Checking rand_core v0.6.2
[INFO] [stderr]     Checking rand_chacha v0.3.0
[INFO] [stderr]     Checking rand v0.8.3
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling syn v1.0.72
[INFO] [stderr]    Compiling serde_derive v1.0.125
[INFO] [stderr]     Checking kademlia_lib v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: constant is never used: `BUCKET_ALPHA`
[INFO] [stdout]   --> src/kademlia.rs:22:1
[INFO] [stdout]    |
[INFO] [stdout] 22 | const BUCKET_ALPHA: usize = 2;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `look_up`
[INFO] [stdout]   --> src/kademlia.rs:96:12
[INFO] [stdout]    |
[INFO] [stdout] 96 |     pub fn look_up(&mut self, target: IdType) -> Vec<NearNode> {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `update_k_closest`
[INFO] [stdout]    --> src/kademlia.rs:131:8
[INFO] [stdout]     |
[INFO] [stdout] 131 |     fn update_k_closest(
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `MAX_BUF`
[INFO] [stdout]   --> src/client_pool.rs:10:1
[INFO] [stdout]    |
[INFO] [stdout] 10 | const MAX_BUF: usize = 1500;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `RetVal`
[INFO] [stdout]   --> src/client_pool.rs:12:1
[INFO] [stdout]    |
[INFO] [stdout] 12 | type RetVal = Arc<(Mutex<Vec<(u32, Option<String>)>>, Condvar)>;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `ClientPool`
[INFO] [stdout]   --> src/client_pool.rs:14:12
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub struct ClientPool {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/client_pool.rs:21:12
[INFO] [stdout]    |
[INFO] [stdout] 21 |     pub fn new(client_addrs: Vec<SocketAddr>) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `private_send`
[INFO] [stdout]   --> src/client_pool.rs:32:8
[INFO] [stdout]    |
[INFO] [stdout] 32 |     fn private_send(
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `send_recv`
[INFO] [stdout]   --> src/client_pool.rs:65:12
[INFO] [stdout]    |
[INFO] [stdout] 65 |     pub fn send_recv(
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `send_recv_batch`
[INFO] [stdout]   --> src/client_pool.rs:80:12
[INFO] [stdout]    |
[INFO] [stdout] 80 |     pub fn send_recv_batch(
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `SharedKBuckets`
[INFO] [stdout]   --> src/kademlia.rs:19:1
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub type SharedKBuckets = Arc<Mutex<KBuckets>>;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `BUCKET_K`
[INFO] [stdout]   --> src/kademlia.rs:21:1
[INFO] [stdout]    |
[INFO] [stdout] 21 | const BUCKET_K: usize = 4;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `BUCKET_ALPHA`
[INFO] [stdout]   --> src/kademlia.rs:22:1
[INFO] [stdout]    |
[INFO] [stdout] 22 | const BUCKET_ALPHA: usize = 2;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `PING_TIMEOUT`
[INFO] [stdout]   --> src/kademlia.rs:23:1
[INFO] [stdout]    |
[INFO] [stdout] 23 | const PING_TIMEOUT: Option<Duration> = Some(Duration::from_millis(1000));
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `FINDNODE_TIMEOUT`
[INFO] [stdout]   --> src/kademlia.rs:24:1
[INFO] [stdout]    |
[INFO] [stdout] 24 | const FINDNODE_TIMEOUT: Option<Duration> = Some(Duration::from_millis(1000));
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Kademlia`
[INFO] [stdout]   --> src/kademlia.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 26 | struct Kademlia {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/kademlia.rs:34:12
[INFO] [stdout]    |
[INFO] [stdout] 34 |     pub fn new(server_addr: SocketAddr, client_addrs: Vec<SocketAddr>) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `make_kbuckets_test`
[INFO] [stdout]   --> src/kademlia.rs:57:8
[INFO] [stdout]    |
[INFO] [stdout] 57 |     fn make_kbuckets_test(clients: Arc<ClientPool>) -> Box<TestFun> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `ping`
[INFO] [stdout]   --> src/kademlia.rs:79:12
[INFO] [stdout]    |
[INFO] [stdout] 79 |     pub fn ping(&mut self, server_addr: SocketAddr) -> Result<IdType, PingError> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `look_up`
[INFO] [stdout]   --> src/kademlia.rs:96:12
[INFO] [stdout]    |
[INFO] [stdout] 96 |     pub fn look_up(&mut self, target: IdType) -> Vec<NearNode> {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `update_k_closest`
[INFO] [stdout]    --> src/kademlia.rs:131:8
[INFO] [stdout]     |
[INFO] [stdout] 131 |     fn update_k_closest(
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `join`
[INFO] [stdout]    --> src/kademlia.rs:175:12
[INFO] [stdout]     |
[INFO] [stdout] 175 |     pub fn join(&mut self, bootstrap_addr: SocketAddr) -> Result<(), JoinError> {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `TestFun`
[INFO] [stdout]  --> src/kbucket.rs:5:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub type TestFun = dyn Fn(IdType, Vec<SocketAddr>) -> Vec<bool> + Send;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `log2_floor`
[INFO] [stdout]  --> src/kbucket.rs:7:4
[INFO] [stdout]   |
[INFO] [stdout] 7 | fn log2_floor(mut x: u32) -> u32 {
[INFO] [stdout]   |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `KBuckets`
[INFO] [stdout]   --> src/kbucket.rs:20:12
[INFO] [stdout]    |
[INFO] [stdout] 20 | pub struct KBuckets {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/kbucket.rs:28:12
[INFO] [stdout]    |
[INFO] [stdout] 28 |     pub fn new(my_id: IdType, bucket_k: usize, test: Box<TestFun>) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `add`
[INFO] [stdout]   --> src/kbucket.rs:37:12
[INFO] [stdout]    |
[INFO] [stdout] 37 |     pub fn add(&mut self, adds: Vec<(IdType, SocketAddr)>) {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `find_k_nearest`
[INFO] [stdout]   --> src/kbucket.rs:64:12
[INFO] [stdout]    |
[INFO] [stdout] 64 |     pub fn find_k_nearest(&self, target: IdType) -> Vec<NearNode> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `MAX_BUF`
[INFO] [stdout]  --> src/kadserver.rs:8:1
[INFO] [stdout]   |
[INFO] [stdout] 8 | const MAX_BUF: usize = 1500;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `KadServer`
[INFO] [stdout]   --> src/kadserver.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct KadServer {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/kadserver.rs:16:12
[INFO] [stdout]    |
[INFO] [stdout] 16 |     pub fn new(id: IdType, kbucktes: SharedKBuckets) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `routine`
[INFO] [stdout]   --> src/kadserver.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 23 |     pub fn routine(&mut self, server_addr: SocketAddr) {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `ping_back`
[INFO] [stdout]   --> src/kadserver.rs:51:8
[INFO] [stdout]    |
[INFO] [stdout] 51 |     fn ping_back(&self) -> String {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `find_node_back`
[INFO] [stdout]   --> src/kadserver.rs:56:8
[INFO] [stdout]    |
[INFO] [stdout] 56 |     fn find_node_back(&self, target: IdType) -> String {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `queue`
[INFO] [stdout]   --> src/thread_pool.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     queue: VecDeque<Job>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `shutdown`
[INFO] [stdout]   --> src/thread_pool.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     shutdown: bool,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `next_job`
[INFO] [stdout]   --> src/thread_pool.rs:16:4
[INFO] [stdout]    |
[INFO] [stdout] 16 | fn next_job(notifier: &Notifier, id: usize) -> Option<Job> {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/thread_pool.rs:39:8
[INFO] [stdout]    |
[INFO] [stdout] 39 |     fn new(id: usize, notifier: Notifier) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/thread_pool.rs:60:12
[INFO] [stdout]    |
[INFO] [stdout] 60 |     pub fn new(size: usize) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `execute`
[INFO] [stdout]   --> src/thread_pool.rs:74:12
[INFO] [stdout]    |
[INFO] [stdout] 74 |     pub fn execute<F: FnOnce(usize) + Send + 'static>(&self, f: F) {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 37 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 38.97s
[INFO] running `Command { std: "docker" "inspect" "27c5a1154f1fcb7842c061550057083519a2e34505a9e49367929fd4f153b399", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "27c5a1154f1fcb7842c061550057083519a2e34505a9e49367929fd4f153b399", kill_on_drop: false }`
[INFO] [stdout] 27c5a1154f1fcb7842c061550057083519a2e34505a9e49367929fd4f153b399