[INFO] cloning repository https://github.com/ac999/round_robin_loadbalancer [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ac999/round_robin_loadbalancer" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fac999%2Fround_robin_loadbalancer", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fac999%2Fround_robin_loadbalancer'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 88bb7ec9862ca014a63e7a3a81cb8070ba299e69 [INFO] checking ac999/round_robin_loadbalancer against master#33fdb797f59421c7bbecaa4588ed5d7a31a9494a for pr-87190-3 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fac999%2Fround_robin_loadbalancer" "/workspace/builds/worker-5/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/ac999/round_robin_loadbalancer on toolchain 33fdb797f59421c7bbecaa4588ed5d7a31a9494a [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/ac999/round_robin_loadbalancer [INFO] finished tweaking git repo https://github.com/ac999/round_robin_loadbalancer [INFO] tweaked toml for git repo https://github.com/ac999/round_robin_loadbalancer written to /workspace/builds/worker-5/source/Cargo.toml [INFO] crate git repo https://github.com/ac999/round_robin_loadbalancer already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] ed5076b422cf3b27c744555aad27b64799bfc23c0662a70f25891e57475c61f8 [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" "ed5076b422cf3b27c744555aad27b64799bfc23c0662a70f25891e57475c61f8", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "ed5076b422cf3b27c744555aad27b64799bfc23c0662a70f25891e57475c61f8", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ed5076b422cf3b27c744555aad27b64799bfc23c0662a70f25891e57475c61f8", kill_on_drop: false }` [INFO] [stdout] ed5076b422cf3b27c744555aad27b64799bfc23c0662a70f25891e57475c61f8 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 456a26147680d146236715193a67c509990a90aa4ea52110a7bf4634a021778a [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" "456a26147680d146236715193a67c509990a90aa4ea52110a7bf4634a021778a", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.28 [INFO] [stderr] Compiling libc v0.2.99 [INFO] [stderr] Compiling proc-macro-nested v0.1.7 [INFO] [stderr] Compiling futures-task v0.3.16 [INFO] [stderr] Checking futures-sink v0.3.16 [INFO] [stderr] Compiling serde_derive v1.0.127 [INFO] [stderr] Checking pin-project-lite v0.2.7 [INFO] [stderr] Compiling log v0.4.14 [INFO] [stderr] Checking slab v0.4.4 [INFO] [stderr] Compiling serde v1.0.127 [INFO] [stderr] Checking futures-io v0.3.16 [INFO] [stderr] Compiling cc v1.0.69 [INFO] [stderr] Compiling serde_json v1.0.66 [INFO] [stderr] Checking once_cell v1.8.0 [INFO] [stderr] Checking bitflags v1.3.1 [INFO] [stderr] Checking bytes v1.0.1 [INFO] [stderr] Compiling futures-macro v0.3.16 [INFO] [stderr] Compiling futures-util v0.3.16 [INFO] [stderr] Compiling num-traits v0.2.14 [INFO] [stderr] Compiling tokio v1.10.0 [INFO] [stderr] Checking instant v0.1.10 [INFO] [stderr] Checking lock_api v0.4.4 [INFO] [stderr] Checking futures-core v0.3.16 [INFO] [stderr] Checking bstr v0.2.16 [INFO] [stderr] Checking futures-channel v0.3.16 [INFO] [stderr] Compiling rlua v0.17.0 [INFO] [stderr] Compiling quote v1.0.9 [INFO] [stderr] Checking getrandom v0.2.3 [INFO] [stderr] Checking parking_lot_core v0.8.3 [INFO] [stderr] Checking signal-hook-registry v1.4.0 [INFO] [stderr] Checking mio v0.7.13 [INFO] [stderr] Checking num_cpus v1.13.0 [INFO] [stderr] Compiling syn v1.0.74 [INFO] [stderr] Checking rand_core v0.6.3 [INFO] [stderr] Checking parking_lot v0.11.1 [INFO] [stderr] Checking rand_chacha v0.3.1 [INFO] [stderr] Checking rand v0.8.4 [INFO] [stderr] Compiling tokio-macros v1.3.0 [INFO] [stderr] Checking futures-executor v0.3.16 [INFO] [stderr] Checking futures v0.3.16 [INFO] [stderr] Checking multithreadluaexec v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `tokio::sync::mpsc::Sender` [INFO] [stdout] --> src/main.rs:12:5 [INFO] [stdout] | [INFO] [stdout] 12 | use tokio::sync::mpsc::Sender; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `tokio::sync::mpsc::Sender` [INFO] [stdout] --> src/main.rs:12:5 [INFO] [stdout] | [INFO] [stdout] 12 | use tokio::sync::mpsc::Sender; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/load_balancer.rs:18:13 [INFO] [stdout] | [INFO] [stdout] 18 | let mut worker = &self.pool[worker_nr]; [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: variable does not need to be mutable [INFO] [stdout] --> src/load_balancer.rs:18:13 [INFO] [stdout] | [INFO] [stdout] 18 | let mut worker = &self.pool[worker_nr]; [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: unused variable: `lua` [INFO] [stdout] --> src/main.rs:30:9 [INFO] [stdout] | [INFO] [stdout] 30 | let lua: Lua = Lua::new(); [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_lua` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `rx` [INFO] [stdout] --> src/main.rs:33:22 [INFO] [stdout] | [INFO] [stdout] 33 | let (tx, mut rx) = mpsc::channel(100); [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_rx` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `i` [INFO] [stdout] --> src/load_balancer.rs:9:13 [INFO] [stdout] | [INFO] [stdout] 9 | for i in 0..num { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:33:18 [INFO] [stdout] | [INFO] [stdout] 33 | let (tx, mut rx) = mpsc::channel(100); [INFO] [stdout] | ----^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `lua` [INFO] [stdout] --> src/main.rs:30:9 [INFO] [stdout] | [INFO] [stdout] 30 | let lua: Lua = Lua::new(); [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_lua` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `rx` [INFO] [stdout] --> src/main.rs:33:22 [INFO] [stdout] | [INFO] [stdout] 33 | let (tx, mut rx) = mpsc::channel(100); [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_rx` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `i` [INFO] [stdout] --> src/load_balancer.rs:9:13 [INFO] [stdout] | [INFO] [stdout] 9 | for i in 0..num { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:33:18 [INFO] [stdout] | [INFO] [stdout] 33 | let (tx, mut rx) = mpsc::channel(100); [INFO] [stdout] | ----^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/worker.rs:21:29 [INFO] [stdout] | [INFO] [stdout] 21 | / ... res.clone() [INFO] [stdout] 22 | | ... .send(LuaResult { int_result: Some(0), string_result: Some("0".to_string()) }) [INFO] [stdout] 23 | | ... .await; [INFO] [stdout] | |_________________________________^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/worker.rs:33:9 [INFO] [stdout] | [INFO] [stdout] 33 | self.sender.clone().send(res).await; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/worker.rs:21:29 [INFO] [stdout] | [INFO] [stdout] 21 | / ... res.clone() [INFO] [stdout] 22 | | ... .send(LuaResult { int_result: Some(0), string_result: Some("0".to_string()) }) [INFO] [stdout] 23 | | ... .await; [INFO] [stdout] | |_________________________________^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/worker.rs:33:9 [INFO] [stdout] | [INFO] [stdout] 33 | self.sender.clone().send(res).await; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 8 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 8 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 34.63s [INFO] running `Command { std: "docker" "inspect" "456a26147680d146236715193a67c509990a90aa4ea52110a7bf4634a021778a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "456a26147680d146236715193a67c509990a90aa4ea52110a7bf4634a021778a", kill_on_drop: false }` [INFO] [stdout] 456a26147680d146236715193a67c509990a90aa4ea52110a7bf4634a021778a