[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 try#a7a572ce3edd6d476191fbfe92c9c1986e009b34 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-7/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/ac999/round_robin_loadbalancer on toolchain a7a572ce3edd6d476191fbfe92c9c1986e009b34 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "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-7/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" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 3ea4e1a7d966af3376ee641931d34c5bccea41f27925397b06341448c6e7786f [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" "3ea4e1a7d966af3376ee641931d34c5bccea41f27925397b06341448c6e7786f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "3ea4e1a7d966af3376ee641931d34c5bccea41f27925397b06341448c6e7786f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "3ea4e1a7d966af3376ee641931d34c5bccea41f27925397b06341448c6e7786f", kill_on_drop: false }` [INFO] [stdout] 3ea4e1a7d966af3376ee641931d34c5bccea41f27925397b06341448c6e7786f [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] daf65252f02fcb01d92a1db1df97860a6c2df14d52793d3e801c9b419a889b86 [INFO] running `Command { std: "docker" "start" "-a" "daf65252f02fcb01d92a1db1df97860a6c2df14d52793d3e801c9b419a889b86", kill_on_drop: false }` [INFO] [stderr] Copying to /tmp/fixit [INFO] [stderr] Running `cargo fix --edition` [INFO] [stderr] note: Switching to Edition 2021 will enable the use of the version 2 feature resolver in Cargo. [INFO] [stderr] This may cause some dependencies to be built with fewer features enabled than previously. [INFO] [stderr] More information about the resolver changes may be found at https://doc.rust-lang.org/nightly/edition-guide/rust-2021/default-cargo-resolver.html [INFO] [stderr] When building the following dependencies, the given features will no longer be used: [INFO] [stderr] [INFO] [stderr] tokio v1.10.0: winapi [INFO] [stderr] [INFO] [stderr] Compiling futures-core v0.3.16 [INFO] [stderr] Compiling serde v1.0.127 [INFO] [stderr] Compiling serde_json v1.0.66 [INFO] [stderr] Compiling futures-util v0.3.16 [INFO] [stderr] Compiling num-traits v0.2.14 [INFO] [stderr] Checking instant v0.1.10 [INFO] [stderr] Compiling rlua v0.17.0 [INFO] [stderr] Checking getrandom v0.2.3 [INFO] [stderr] Checking bstr v0.2.16 [INFO] [stderr] Compiling syn v1.0.74 [INFO] [stderr] Checking mio v0.7.13 [INFO] [stderr] Checking parking_lot_core v0.8.3 [INFO] [stderr] Checking rand_core v0.6.3 [INFO] [stderr] Checking rand_chacha v0.3.1 [INFO] [stderr] Checking parking_lot v0.11.1 [INFO] [stderr] Checking futures-channel v0.3.16 [INFO] [stderr] Checking rand v0.8.4 [INFO] [stderr] Compiling futures-macro v0.3.16 [INFO] [stderr] Compiling serde_derive v1.0.127 [INFO] [stderr] Compiling tokio-macros v1.3.0 [INFO] [stderr] Checking tokio v1.10.0 [INFO] [stderr] Checking futures-executor v0.3.16 [INFO] [stderr] Checking futures v0.3.16 [INFO] [stderr] Checking multithreadluaexec v0.1.0 (/tmp/fixit) [INFO] [stderr] Migrating src/main.rs from 2018 edition to 2021 [INFO] [stderr] Fixed src/main.rs (4 fixes) [INFO] [stderr] Fixed src/load_balancer.rs (2 fixes) [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: 2 warnings emitted [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: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 31.46s [INFO] [stderr] Running `cargo check` to verify 2021 [INFO] [stderr] Compiling tokio v1.10.0 [INFO] [stderr] Checking multithreadluaexec v0.1.0 (/tmp/fixit) [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: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 7.25s [INFO] running `Command { std: "docker" "inspect" "daf65252f02fcb01d92a1db1df97860a6c2df14d52793d3e801c9b419a889b86", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "daf65252f02fcb01d92a1db1df97860a6c2df14d52793d3e801c9b419a889b86", kill_on_drop: false }` [INFO] [stdout] daf65252f02fcb01d92a1db1df97860a6c2df14d52793d3e801c9b419a889b86