[INFO] cloning repository https://github.com/AlexanderChen1989/grpc-lb
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/AlexanderChen1989/grpc-lb" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAlexanderChen1989%2Fgrpc-lb", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAlexanderChen1989%2Fgrpc-lb'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9159021d1833a51264fba3262da48971e02b2fa3
[INFO] checking AlexanderChen1989/grpc-lb against master#3129d37ef7075ee3cbaa3d6cbe1b5794f67192b0 for pr-143164
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAlexanderChen1989%2Fgrpc-lb" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/AlexanderChen1989/grpc-lb
[INFO] finished tweaking git repo https://github.com/AlexanderChen1989/grpc-lb
[INFO] tweaked toml for git repo https://github.com/AlexanderChen1989/grpc-lb written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/AlexanderChen1989/grpc-lb on toolchain 3129d37ef7075ee3cbaa3d6cbe1b5794f67192b0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3129d37ef7075ee3cbaa3d6cbe1b5794f67192b0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/AlexanderChen1989/grpc-lb 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" "+3129d37ef7075ee3cbaa3d6cbe1b5794f67192b0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "inspect" "56ff0cc940fc7c7792fe9e07cef3919fbcc4e30ffa28db9841146d0497848a47", kill_on_drop: false }`
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[INFO] [stdout] 56ff0cc940fc7c7792fe9e07cef3919fbcc4e30ffa28db9841146d0497848a47
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+3129d37ef7075ee3cbaa3d6cbe1b5794f67192b0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
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[INFO] [stdout] warning: unused variable: `d`
[INFO] [stdout]    --> src/bin/client5.rs:244:17
[INFO] [stdout]     |
[INFO] [stdout] 244 |             let d = now.elapsed();
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_d`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Remove` is never constructed
[INFO] [stdout]    --> src/bin/client5.rs:259:5
[INFO] [stdout]     |
[INFO] [stdout] 257 | enum Change {
[INFO] [stdout]     |      ------ variant in this enum
[INFO] [stdout] 258 |     Insert(String, Endpoint),
[INFO] [stdout] 259 |     Remove(String),
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `req` is never read
[INFO] [stdout]   --> src/bin/server5.rs:70:5
[INFO] [stdout]    |
[INFO] [stdout] 69 | struct Request {
[INFO] [stdout]    |        ------- field in this struct
[INFO] [stdout] 70 |     req: HelloReq,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `rt` is never read
[INFO] [stdout]   --> src/bin/server5.rs:76:5
[INFO] [stdout]    |
[INFO] [stdout] 75 | struct HelloServiceImpl {
[INFO] [stdout]    |        ---------------- field in this struct
[INFO] [stdout] 76 |     rt: Arc<Runtime>,
[INFO] [stdout]    |     ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `HelloServiceImpl` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `rng_rx` is never read
[INFO] [stdout]    --> src/bin/server5.rs:100:5
[INFO] [stdout]     |
[INFO] [stdout] 97  | struct Worker {
[INFO] [stdout]     |        ------ field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 100 |     rng_rx: flume::Receiver<u64>,
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Pair` is never constructed
[INFO] [stdout]   --> src/bin/client3.rs:83:8
[INFO] [stdout]    |
[INFO] [stdout] 83 | struct Pair<K: PartialEq>(K, Endpoint);
[INFO] [stdout]    |        ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `req` is never read
[INFO] [stdout]   --> src/bin/server4.rs:70:5
[INFO] [stdout]    |
[INFO] [stdout] 69 | struct Request {
[INFO] [stdout]    |        ------- field in this struct
[INFO] [stdout] 70 |     req: HelloReq,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `rt` is never read
[INFO] [stdout]   --> src/bin/server4.rs:76:5
[INFO] [stdout]    |
[INFO] [stdout] 75 | struct HelloServiceImpl {
[INFO] [stdout]    |        ---------------- field in this struct
[INFO] [stdout] 76 |     rt: Arc<Runtime>,
[INFO] [stdout]    |     ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `HelloServiceImpl` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `rng_rx` is never read
[INFO] [stdout]    --> src/bin/server4.rs:100:5
[INFO] [stdout]     |
[INFO] [stdout] 97  | struct Worker {
[INFO] [stdout]     |        ------ field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 100 |     rng_rx: flume::Receiver<u64>,
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `req` is never read
[INFO] [stdout]   --> src/bin/server5.rs:70:5
[INFO] [stdout]    |
[INFO] [stdout] 69 | struct Request {
[INFO] [stdout]    |        ------- field in this struct
[INFO] [stdout] 70 |     req: HelloReq,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `rt` is never read
[INFO] [stdout]   --> src/bin/server5.rs:76:5
[INFO] [stdout]    |
[INFO] [stdout] 75 | struct HelloServiceImpl {
[INFO] [stdout]    |        ---------------- field in this struct
[INFO] [stdout] 76 |     rt: Arc<Runtime>,
[INFO] [stdout]    |     ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `HelloServiceImpl` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `rng_rx` is never read
[INFO] [stdout]    --> src/bin/server5.rs:100:5
[INFO] [stdout]     |
[INFO] [stdout] 97  | struct Worker {
[INFO] [stdout]     |        ------ field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 100 |     rng_rx: flume::Receiver<u64>,
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Pair` is never constructed
[INFO] [stdout]   --> src/bin/client3.rs:83:8
[INFO] [stdout]    |
[INFO] [stdout] 83 | struct Pair<K: PartialEq>(K, Endpoint);
[INFO] [stdout]    |        ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `req` is never read
[INFO] [stdout]   --> src/bin/server3.rs:71:5
[INFO] [stdout]    |
[INFO] [stdout] 70 | struct Request {
[INFO] [stdout]    |        ------- field in this struct
[INFO] [stdout] 71 |     req: HelloReq,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `rt` is never read
[INFO] [stdout]   --> src/bin/server3.rs:77:5
[INFO] [stdout]    |
[INFO] [stdout] 76 | struct HelloServiceImpl {
[INFO] [stdout]    |        ---------------- field in this struct
[INFO] [stdout] 77 |     rt: Arc<Runtime>,
[INFO] [stdout]    |     ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `HelloServiceImpl` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `after` is never used
[INFO] [stdout]   --> src/bin/server3.rs:81:4
[INFO] [stdout]    |
[INFO] [stdout] 81 | fn after(n: u64) -> impl Future {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `rng_rx` is never read
[INFO] [stdout]    --> src/bin/server3.rs:105:5
[INFO] [stdout]     |
[INFO] [stdout] 102 | struct Worker {
[INFO] [stdout]     |        ------ field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 105 |     rng_rx: flume::Receiver<u64>,
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `req` is never read
[INFO] [stdout]   --> src/bin/server2.rs:59:5
[INFO] [stdout]    |
[INFO] [stdout] 58 | struct Request {
[INFO] [stdout]    |        ------- field in this struct
[INFO] [stdout] 59 |     req: HelloReq,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `rt` is never read
[INFO] [stdout]   --> src/bin/server2.rs:65:5
[INFO] [stdout]    |
[INFO] [stdout] 64 | struct HelloServiceImpl {
[INFO] [stdout]    |        ---------------- field in this struct
[INFO] [stdout] 65 |     rt: Arc<Runtime>,
[INFO] [stdout]    |     ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `HelloServiceImpl` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `after` is never used
[INFO] [stdout]   --> src/bin/server2.rs:69:4
[INFO] [stdout]    |
[INFO] [stdout] 69 | fn after(n: u64) -> impl Future {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `rng_rx` is never read
[INFO] [stdout]   --> src/bin/server2.rs:93:5
[INFO] [stdout]    |
[INFO] [stdout] 90 | struct Worker {
[INFO] [stdout]    |        ------ field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 93 |     rng_rx: flume::Receiver<u64>,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `d`
[INFO] [stdout]    --> src/bin/client5.rs:244:17
[INFO] [stdout]     |
[INFO] [stdout] 244 |             let d = now.elapsed();
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_d`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Remove` is never constructed
[INFO] [stdout]    --> src/bin/client5.rs:259:5
[INFO] [stdout]     |
[INFO] [stdout] 257 | enum Change {
[INFO] [stdout]     |      ------ variant in this enum
[INFO] [stdout] 258 |     Insert(String, Endpoint),
[INFO] [stdout] 259 |     Remove(String),
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `req` is never read
[INFO] [stdout]   --> src/bin/server3.rs:71:5
[INFO] [stdout]    |
[INFO] [stdout] 70 | struct Request {
[INFO] [stdout]    |        ------- field in this struct
[INFO] [stdout] 71 |     req: HelloReq,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `rt` is never read
[INFO] [stdout]   --> src/bin/server3.rs:77:5
[INFO] [stdout]    |
[INFO] [stdout] 76 | struct HelloServiceImpl {
[INFO] [stdout]    |        ---------------- field in this struct
[INFO] [stdout] 77 |     rt: Arc<Runtime>,
[INFO] [stdout]    |     ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `HelloServiceImpl` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `after` is never used
[INFO] [stdout]   --> src/bin/server3.rs:81:4
[INFO] [stdout]    |
[INFO] [stdout] 81 | fn after(n: u64) -> impl Future {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `rng_rx` is never read
[INFO] [stdout]    --> src/bin/server3.rs:105:5
[INFO] [stdout]     |
[INFO] [stdout] 102 | struct Worker {
[INFO] [stdout]     |        ------ field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 105 |     rng_rx: flume::Receiver<u64>,
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `req` is never read
[INFO] [stdout]   --> src/bin/server2.rs:59:5
[INFO] [stdout]    |
[INFO] [stdout] 58 | struct Request {
[INFO] [stdout]    |        ------- field in this struct
[INFO] [stdout] 59 |     req: HelloReq,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `rt` is never read
[INFO] [stdout]   --> src/bin/server2.rs:65:5
[INFO] [stdout]    |
[INFO] [stdout] 64 | struct HelloServiceImpl {
[INFO] [stdout]    |        ---------------- field in this struct
[INFO] [stdout] 65 |     rt: Arc<Runtime>,
[INFO] [stdout]    |     ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `HelloServiceImpl` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `after` is never used
[INFO] [stdout]   --> src/bin/server2.rs:69:4
[INFO] [stdout]    |
[INFO] [stdout] 69 | fn after(n: u64) -> impl Future {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `rng_rx` is never read
[INFO] [stdout]   --> src/bin/server2.rs:93:5
[INFO] [stdout]    |
[INFO] [stdout] 90 | struct Worker {
[INFO] [stdout]    |        ------ field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 93 |     rng_rx: flume::Receiver<u64>,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `req` is never read
[INFO] [stdout]   --> src/bin/server4.rs:70:5
[INFO] [stdout]    |
[INFO] [stdout] 69 | struct Request {
[INFO] [stdout]    |        ------- field in this struct
[INFO] [stdout] 70 |     req: HelloReq,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `rt` is never read
[INFO] [stdout]   --> src/bin/server4.rs:76:5
[INFO] [stdout]    |
[INFO] [stdout] 75 | struct HelloServiceImpl {
[INFO] [stdout]    |        ---------------- field in this struct
[INFO] [stdout] 76 |     rt: Arc<Runtime>,
[INFO] [stdout]    |     ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `HelloServiceImpl` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `rng_rx` is never read
[INFO] [stdout]    --> src/bin/server4.rs:100:5
[INFO] [stdout]     |
[INFO] [stdout] 97  | struct Worker {
[INFO] [stdout]     |        ------ field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 100 |     rng_rx: flume::Receiver<u64>,
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 08s
[INFO] running `Command { std: "docker" "inspect" "8bce952806c973d3b0fdc6544dec37611b3866db94ba1ed4f29ee2b75da60074", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8bce952806c973d3b0fdc6544dec37611b3866db94ba1ed4f29ee2b75da60074", kill_on_drop: false }`
[INFO] [stdout] 8bce952806c973d3b0fdc6544dec37611b3866db94ba1ed4f29ee2b75da60074
