[INFO] cloning repository https://github.com/royleochan/redis_server
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/royleochan/redis_server" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Froyleochan%2Fredis_server", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Froyleochan%2Fredis_server'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 64951217c0ee679555ef6ed6643ae37e4c37475f
[INFO] checking royleochan/redis_server against master#22572d0994593197593e2a1b7b18d720a9a349a7 for pr-126452-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Froyleochan%2Fredis_server" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/royleochan/redis_server on toolchain 22572d0994593197593e2a1b7b18d720a9a349a7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/royleochan/redis_server
[INFO] finished tweaking git repo https://github.com/royleochan/redis_server
[INFO] tweaked toml for git repo https://github.com/royleochan/redis_server written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/royleochan/redis_server 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" "+22572d0994593197593e2a1b7b18d720a9a349a7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dc3d3cc9a6cb1db312d064cb366fde37c03c30776bea736d8b7a99bf3e257d10
[INFO] running `Command { std: "docker" "start" "-a" "dc3d3cc9a6cb1db312d064cb366fde37c03c30776bea736d8b7a99bf3e257d10", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dc3d3cc9a6cb1db312d064cb366fde37c03c30776bea736d8b7a99bf3e257d10", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dc3d3cc9a6cb1db312d064cb366fde37c03c30776bea736d8b7a99bf3e257d10", kill_on_drop: false }`
[INFO] [stdout] dc3d3cc9a6cb1db312d064cb366fde37c03c30776bea736d8b7a99bf3e257d10
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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=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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 23d622cb9246e70a92e1c7d42b30040a2543954417c99ab291f339403d736586
[INFO] running `Command { std: "docker" "start" "-a" "23d622cb9246e70a92e1c7d42b30040a2543954417c99ab291f339403d736586", kill_on_drop: false }`
[INFO] [stderr]     Checking regex-syntax v0.8.4
[INFO] [stderr]     Checking termcolor v1.4.1
[INFO] [stderr]     Checking is-terminal v0.4.12
[INFO] [stderr]     Checking regex-automata v0.4.7
[INFO] [stderr]     Checking regex v1.10.5
[INFO] [stderr]     Checking env_logger v0.10.2
[INFO] [stderr]     Checking redis_server v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Bytes`
[INFO] [stdout]  --> src/resp/deserializer.rs:1:13
[INFO] [stdout]   |
[INFO] [stdout] 1 | use bytes::{Bytes, BytesMut};
[INFO] [stdout]   |             ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `RESPDataType`
[INFO] [stdout]  --> src/resp/deserializer.rs:3:19
[INFO] [stdout]   |
[INFO] [stdout] 3 | use super::data::{RESPDataType, RESPError, RESPResult};
[INFO] [stdout]   |                   ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `workers` is never read
[INFO] [stdout]  --> src/thread_pool.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub struct ThreadPool {
[INFO] [stdout]   |            ---------- field in this struct
[INFO] [stdout] 9 |     workers: Vec<Worker>,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `id` and `thread` are never read
[INFO] [stdout]   --> src/thread_pool.rs:42:5
[INFO] [stdout]    |
[INFO] [stdout] 41 | struct Worker {
[INFO] [stdout]    |        ------ fields in this struct
[INFO] [stdout] 42 |     id: usize,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 43 |     thread: thread::JoinHandle<()>,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `workers` is never read
[INFO] [stdout]  --> src/thread_pool.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub struct ThreadPool {
[INFO] [stdout]   |            ---------- field in this struct
[INFO] [stdout] 9 |     workers: Vec<Worker>,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `id` and `thread` are never read
[INFO] [stdout]   --> src/thread_pool.rs:42:5
[INFO] [stdout]    |
[INFO] [stdout] 41 | struct Worker {
[INFO] [stdout]    |        ------ fields in this struct
[INFO] [stdout] 42 |     id: usize,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 43 |     thread: thread::JoinHandle<()>,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.13s
[INFO] running `Command { std: "docker" "inspect" "23d622cb9246e70a92e1c7d42b30040a2543954417c99ab291f339403d736586", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "23d622cb9246e70a92e1c7d42b30040a2543954417c99ab291f339403d736586", kill_on_drop: false }`
[INFO] [stdout] 23d622cb9246e70a92e1c7d42b30040a2543954417c99ab291f339403d736586
[INFO] checking royleochan/redis_server against try#6289438dbad80b1a0029c66dd3f6abf57c2c51be for pr-126452-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Froyleochan%2Fredis_server" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/royleochan/redis_server on toolchain 6289438dbad80b1a0029c66dd3f6abf57c2c51be
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/royleochan/redis_server
[INFO] finished tweaking git repo https://github.com/royleochan/redis_server
[INFO] tweaked toml for git repo https://github.com/royleochan/redis_server written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/royleochan/redis_server 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" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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_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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c9383fe3347dc2d6cf044fcc3459b910e1cb8ac2287b48df0ea6da37745693fb
[INFO] running `Command { std: "docker" "start" "-a" "c9383fe3347dc2d6cf044fcc3459b910e1cb8ac2287b48df0ea6da37745693fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c9383fe3347dc2d6cf044fcc3459b910e1cb8ac2287b48df0ea6da37745693fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c9383fe3347dc2d6cf044fcc3459b910e1cb8ac2287b48df0ea6da37745693fb", kill_on_drop: false }`
[INFO] [stdout] c9383fe3347dc2d6cf044fcc3459b910e1cb8ac2287b48df0ea6da37745693fb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 339a1a7dc618dc39b5695010e809289f7d1d9a7785fc4fc863fea39f373a8f07
[INFO] running `Command { std: "docker" "start" "-a" "339a1a7dc618dc39b5695010e809289f7d1d9a7785fc4fc863fea39f373a8f07", kill_on_drop: false }`
[INFO] [stderr]     Checking regex-syntax v0.8.4
[INFO] [stderr]     Checking termcolor v1.4.1
[INFO] [stderr]     Checking is-terminal v0.4.12
[INFO] [stderr]     Checking regex-automata v0.4.7
[INFO] [stderr]     Checking regex v1.10.5
[INFO] [stderr]     Checking env_logger v0.10.2
[INFO] [stderr]     Checking redis_server v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Bytes`
[INFO] [stdout]  --> src/resp/deserializer.rs:1:13
[INFO] [stdout]   |
[INFO] [stdout] 1 | use bytes::{Bytes, BytesMut};
[INFO] [stdout]   |             ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `RESPDataType`
[INFO] [stdout]  --> src/resp/deserializer.rs:3:19
[INFO] [stdout]   |
[INFO] [stdout] 3 | use super::data::{RESPDataType, RESPError, RESPResult};
[INFO] [stdout]   |                   ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `workers` is never read
[INFO] [stdout]  --> src/thread_pool.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub struct ThreadPool {
[INFO] [stdout]   |            ---------- field in this struct
[INFO] [stdout] 9 |     workers: Vec<Worker>,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `id` and `thread` are never read
[INFO] [stdout]   --> src/thread_pool.rs:42:5
[INFO] [stdout]    |
[INFO] [stdout] 41 | struct Worker {
[INFO] [stdout]    |        ------ fields in this struct
[INFO] [stdout] 42 |     id: usize,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 43 |     thread: thread::JoinHandle<()>,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `workers` is never read
[INFO] [stdout]  --> src/thread_pool.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub struct ThreadPool {
[INFO] [stdout]   |            ---------- field in this struct
[INFO] [stdout] 9 |     workers: Vec<Worker>,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `id` and `thread` are never read
[INFO] [stdout]   --> src/thread_pool.rs:42:5
[INFO] [stdout]    |
[INFO] [stdout] 41 | struct Worker {
[INFO] [stdout]    |        ------ fields in this struct
[INFO] [stdout] 42 |     id: usize,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 43 |     thread: thread::JoinHandle<()>,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.08s
[INFO] running `Command { std: "docker" "inspect" "339a1a7dc618dc39b5695010e809289f7d1d9a7785fc4fc863fea39f373a8f07", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "339a1a7dc618dc39b5695010e809289f7d1d9a7785fc4fc863fea39f373a8f07", kill_on_drop: false }`
[INFO] [stdout] 339a1a7dc618dc39b5695010e809289f7d1d9a7785fc4fc863fea39f373a8f07