[INFO] cloning repository https://github.com/ymgyt/mini-redis-handson
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ymgyt/mini-redis-handson" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fymgyt%2Fmini-redis-handson", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fymgyt%2Fmini-redis-handson'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5f5e5ee9b02724746ffdad20ab655a22a2d8ebf6
[INFO] testing ymgyt/mini-redis-handson against 1.65.0 for beta-1.66-1.1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fymgyt%2Fmini-redis-handson" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ymgyt/mini-redis-handson on toolchain 1.65.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.65.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ymgyt/mini-redis-handson
[INFO] finished tweaking git repo https://github.com/ymgyt/mini-redis-handson
[INFO] tweaked toml for git repo https://github.com/ymgyt/mini-redis-handson written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/ymgyt/mini-redis-handson already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.65.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded pin-project-lite v0.1.7
[INFO] [stderr]   Downloaded num_cpus v1.13.0
[INFO] [stderr]   Downloaded sharded-slab v0.0.9
[INFO] [stderr]   Downloaded socket2 v0.3.15
[INFO] [stderr]   Downloaded mio v0.7.4
[INFO] [stderr]   Downloaded syn v1.0.40
[INFO] [stderr]   Downloaded regex v1.3.9
[INFO] [stderr]   Downloaded pin-utils v0.1.0
[INFO] [stderr]   Downloaded version_check v0.9.2
[INFO] [stderr]   Downloaded atoi v0.3.2
[INFO] [stderr]   Downloaded futures-task v0.3.6
[INFO] [stderr]   Downloaded memoffset v0.5.6
[INFO] [stderr]   Downloaded quote v1.0.7
[INFO] [stderr]   Downloaded unicode-xid v0.2.1
[INFO] [stderr]   Downloaded tokio-macros v0.3.0
[INFO] [stderr]   Downloaded crossbeam v0.7.3
[INFO] [stderr]   Downloaded cloudabi v0.1.0
[INFO] [stderr]   Downloaded lock_api v0.4.1
[INFO] [stderr]   Downloaded futures-core v0.3.6
[INFO] [stderr]   Downloaded tracing-serde v0.1.2
[INFO] [stderr]   Downloaded thread_local v1.0.1
[INFO] [stderr]   Downloaded tracing-core v0.1.16
[INFO] [stderr]   Downloaded bytes v0.6.0
[INFO] [stderr]   Downloaded mini-redis v0.3.0
[INFO] [stderr]   Downloaded ntapi v0.3.6
[INFO] [stderr]   Downloaded itoa v0.4.6
[INFO] [stderr]   Downloaded hermit-abi v0.1.15
[INFO] [stderr]   Downloaded crossbeam-channel v0.4.4
[INFO] [stderr]   Downloaded async-stream v0.2.1
[INFO] [stderr]   Downloaded futures-io v0.3.6
[INFO] [stderr]   Downloaded futures-executor v0.3.6
[INFO] [stderr]   Downloaded proc-macro-error-attr v1.0.4
[INFO] [stderr]   Downloaded futures v0.3.6
[INFO] [stderr]   Downloaded proc-macro-hack v0.5.18
[INFO] [stderr]   Downloaded crossbeam-queue v0.2.3
[INFO] [stderr]   Downloaded structopt v0.3.17
[INFO] [stderr]   Downloaded tracing-log v0.1.1
[INFO] [stderr]   Downloaded matchers v0.0.1
[INFO] [stderr]   Downloaded pin-project v0.4.23
[INFO] [stderr]   Downloaded crossbeam-epoch v0.8.2
[INFO] [stderr]   Downloaded ansi_term v0.12.1
[INFO] [stderr]   Downloaded crossbeam-deque v0.7.3
[INFO] [stderr]   Downloaded tracing-futures v0.2.4
[INFO] [stderr]   Downloaded libc v0.2.77
[INFO] [stderr]   Downloaded winapi v0.3.9
[INFO] [stderr]   Downloaded tokio v0.3.1
[INFO] [stderr]   Downloaded chrono v0.4.15
[INFO] [stderr]   Downloaded log v0.4.11
[INFO] [stderr]   Downloaded fnv v1.0.7
[INFO] [stderr]   Downloaded serde_json v1.0.57
[INFO] [stderr]   Downloaded serde v1.0.116
[INFO] [stderr]   Downloaded tracing v0.1.19
[INFO] [stderr]   Downloaded tracing-subscriber v0.2.12
[INFO] [stderr]   Downloaded miow v0.3.5
[INFO] [stderr]   Downloaded arc-swap v0.4.7
[INFO] [stderr]   Downloaded pin-project-internal v0.4.23
[INFO] [stderr]   Downloaded tracing-attributes v0.1.11
[INFO] [stderr]   Downloaded time v0.1.44
[INFO] [stderr]   Downloaded signal-hook-registry v1.2.1
[INFO] [stderr]   Downloaded wasi v0.10.0+wasi-snapshot-preview1
[INFO] [stderr]   Downloaded futures-macro v0.3.6
[INFO] [stderr]   Downloaded once_cell v1.4.1
[INFO] [stderr]   Downloaded proc-macro-error v1.0.4
[INFO] [stderr]   Downloaded regex-automata v0.1.9
[INFO] [stderr]   Downloaded ryu v1.0.5
[INFO] [stderr]   Downloaded proc-macro2 v1.0.21
[INFO] [stderr]   Downloaded futures-sink v0.3.6
[INFO] [stderr]   Downloaded futures-util v0.3.6
[INFO] [stderr]   Downloaded instant v0.1.7
[INFO] [stderr]   Downloaded redox_syscall v0.1.57
[INFO] [stderr]   Downloaded smallvec v1.4.2
[INFO] [stderr]   Downloaded parking_lot_core v0.8.0
[INFO] [stderr]   Downloaded parking_lot v0.11.0
[INFO] [stderr]   Downloaded futures-channel v0.3.6
[INFO] [stderr]   Downloaded proc-macro-nested v0.1.6
[INFO] [stderr]   Downloaded async-stream-impl v0.2.1
[INFO] [stderr]   Downloaded structopt-derive v0.4.10
[INFO] [stderr]   Downloaded unicode-width v0.1.8
[INFO] [stderr]   Downloaded clap v2.33.3
[INFO] [stderr]   Downloaded num-integer v0.1.43
[INFO] [stderr]   Downloaded autocfg v1.0.1
[INFO] [stderr]   Downloaded num-traits v0.2.12
[INFO] [stderr]   Downloaded scopeguard v1.1.0
[INFO] [stderr]   Downloaded regex-syntax v0.6.18
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:83125433e4fff17b1ac56874832f668d9df75ee638575aca552b68e127bedee9" "/opt/rustwide/cargo-home/bin/cargo" "+1.65.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9ed772e9f7e99adf3a6f10064dfbf1e2ea5e6adcd8caac4ca7c0b01927f4c4a2
[INFO] running `Command { std: "docker" "start" "-a" "9ed772e9f7e99adf3a6f10064dfbf1e2ea5e6adcd8caac4ca7c0b01927f4c4a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9ed772e9f7e99adf3a6f10064dfbf1e2ea5e6adcd8caac4ca7c0b01927f4c4a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9ed772e9f7e99adf3a6f10064dfbf1e2ea5e6adcd8caac4ca7c0b01927f4c4a2", kill_on_drop: false }`
[INFO] [stdout] 9ed772e9f7e99adf3a6f10064dfbf1e2ea5e6adcd8caac4ca7c0b01927f4c4a2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:83125433e4fff17b1ac56874832f668d9df75ee638575aca552b68e127bedee9" "/opt/rustwide/cargo-home/bin/cargo" "+1.65.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 23fcd4a66f8eacd7b9705f6f5172f941ef8754811a22fbf08a762aa7a12755a9
[INFO] running `Command { std: "docker" "start" "-a" "23fcd4a66f8eacd7b9705f6f5172f941ef8754811a22fbf08a762aa7a12755a9", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.21
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.40
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling libc v0.2.77
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]    Compiling pin-project-internal v0.4.23
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling futures-core v0.3.6
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling serde v1.0.116
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling regex-syntax v0.6.18
[INFO] [stderr]    Compiling tracing-core v0.1.16
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling smallvec v1.4.2
[INFO] [stderr]    Compiling proc-macro-nested v0.1.6
[INFO] [stderr]    Compiling slab v0.4.2
[INFO] [stderr]    Compiling instant v0.1.7
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]    Compiling memoffset v0.5.6
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling serde_json v1.0.57
[INFO] [stderr]    Compiling unicode-width v0.1.8
[INFO] [stderr]    Compiling futures-sink v0.3.6
[INFO] [stderr]    Compiling once_cell v1.4.1
[INFO] [stderr]    Compiling unicode-segmentation v1.6.0
[INFO] [stderr]    Compiling proc-macro-hack v0.5.18
[INFO] [stderr]    Compiling futures-channel v0.3.6
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling futures-task v0.3.6
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]    Compiling lock_api v0.4.1
[INFO] [stderr]    Compiling pin-utils v0.1.0
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling futures-io v0.3.6
[INFO] [stderr]    Compiling parking_lot_core v0.8.0
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling time v0.1.44
[INFO] [stderr]    Compiling itoa v0.4.6
[INFO] [stderr]    Compiling ansi_term v0.11.0
[INFO] [stderr]    Compiling vec_map v0.8.2
[INFO] [stderr]    Compiling arc-swap v0.4.7
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling mio v0.7.4
[INFO] [stderr]    Compiling parking_lot v0.11.0
[INFO] [stderr]    Compiling tracing-log v0.1.1
[INFO] [stderr]    Compiling regex-automata v0.1.9
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling signal-hook-registry v1.2.1
[INFO] [stderr]    Compiling regex v1.3.9
[INFO] [stderr]    Compiling thread_local v1.0.1
[INFO] [stderr]    Compiling sharded-slab v0.0.9
[INFO] [stderr]    Compiling bytes v0.6.0
[INFO] [stderr]    Compiling ansi_term v0.12.1
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling pin-project-lite v0.1.7
[INFO] [stderr]    Compiling atoi v0.3.2
[INFO] [stderr]    Compiling crossbeam-deque v0.7.3
[INFO] [stderr]    Compiling crossbeam-queue v0.2.3
[INFO] [stderr]    Compiling crossbeam-channel v0.4.4
[INFO] [stderr]    Compiling chrono v0.4.15
[INFO] [stderr]    Compiling matchers v0.0.1
[INFO] [stderr]    Compiling crossbeam v0.7.3
[INFO] [stderr]    Compiling tracing-serde v0.1.2
[INFO] [stderr]    Compiling tracing-subscriber v0.2.12
[INFO] [stderr]    Compiling futures-macro v0.3.6
[INFO] [stderr]    Compiling tracing-attributes v0.1.11
[INFO] [stderr]    Compiling tokio-macros v0.3.0
[INFO] [stderr]    Compiling async-stream-impl v0.2.1
[INFO] [stderr]    Compiling structopt-derive v0.4.10
[INFO] [stderr]    Compiling async-stream v0.2.1
[INFO] [stderr]    Compiling tokio v0.3.1
[INFO] [stderr]    Compiling tracing v0.1.19
[INFO] [stderr]    Compiling structopt v0.3.17
[INFO] [stderr]    Compiling pin-project v0.4.23
[INFO] [stderr]    Compiling futures-util v0.3.6
[INFO] [stderr]    Compiling tracing-futures v0.2.4
[INFO] [stderr]    Compiling mini-redis v0.3.0
[INFO] [stderr]    Compiling futures-executor v0.3.6
[INFO] [stderr]    Compiling futures v0.3.6
[INFO] [stderr]    Compiling my-redis v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 14 |     let mut listener = TcpListener::bind("127.0.0.1:6379").await.unwrap();
[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: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 39.84s
[INFO] running `Command { std: "docker" "inspect" "23fcd4a66f8eacd7b9705f6f5172f941ef8754811a22fbf08a762aa7a12755a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "23fcd4a66f8eacd7b9705f6f5172f941ef8754811a22fbf08a762aa7a12755a9", kill_on_drop: false }`
[INFO] [stdout] 23fcd4a66f8eacd7b9705f6f5172f941ef8754811a22fbf08a762aa7a12755a9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:83125433e4fff17b1ac56874832f668d9df75ee638575aca552b68e127bedee9" "/opt/rustwide/cargo-home/bin/cargo" "+1.65.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ee97115771e5c7ee961b8f441ba1b64d30e4af0b21870a914e132a0ed5e9c0d6
[INFO] running `Command { std: "docker" "start" "-a" "ee97115771e5c7ee961b8f441ba1b64d30e4af0b21870a914e132a0ed5e9c0d6", kill_on_drop: false }`
[INFO] [stderr]    Compiling my-redis v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> examples/hello-redis.rs:23:10
[INFO] [stdout]    |
[INFO] [stdout] 23 |     let (mut tx, mut rx) = mpsc::channel(32);
[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]   --> examples/hello-redis.rs:25:9
[INFO] [stdout]    |
[INFO] [stdout] 25 |     let mut tx2 = tx.clone();
[INFO] [stdout]    |         ----^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> examples/stream.rs:10:10
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let (mut tx, mut rx) = mpsc::channel(10);
[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/main.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 14 |     let mut listener = TcpListener::bind("127.0.0.1:6379").await.unwrap();
[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: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.90s
[INFO] running `Command { std: "docker" "inspect" "ee97115771e5c7ee961b8f441ba1b64d30e4af0b21870a914e132a0ed5e9c0d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ee97115771e5c7ee961b8f441ba1b64d30e4af0b21870a914e132a0ed5e9c0d6", kill_on_drop: false }`
[INFO] [stdout] ee97115771e5c7ee961b8f441ba1b64d30e4af0b21870a914e132a0ed5e9c0d6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:83125433e4fff17b1ac56874832f668d9df75ee638575aca552b68e127bedee9" "/opt/rustwide/cargo-home/bin/cargo" "+1.65.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] b6575f0d2a35c5a729d13c05d4de045ff7b4eef92332c15ed2ad598e445b1b55
[INFO] running `Command { std: "docker" "start" "-a" "b6575f0d2a35c5a729d13c05d4de045ff7b4eef92332c15ed2ad598e445b1b55", kill_on_drop: false }`
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:14:9
[INFO] [stderr]    |
[INFO] [stderr] 14 |     let mut listener = TcpListener::bind("127.0.0.1:6379").await.unwrap();
[INFO] [stderr]    |         ----^^^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> examples/hello-redis.rs:23:10
[INFO] [stderr]    |
[INFO] [stderr] 23 |     let (mut tx, mut rx) = mpsc::channel(32);
[INFO] [stderr]    |          ----^^
[INFO] [stderr]    |          |
[INFO] [stderr]    |          help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> examples/hello-redis.rs:25:9
[INFO] [stderr]    |
[INFO] [stderr] 25 |     let mut tx2 = tx.clone();
[INFO] [stderr]    |         ----^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> examples/stream.rs:10:10
[INFO] [stderr]    |
[INFO] [stderr] 10 |     let (mut tx, mut rx) = mpsc::channel(10);
[INFO] [stderr]    |          ----^^
[INFO] [stderr]    |          |
[INFO] [stderr]    |          help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `my-redis` (bin "my-redis" test) generated 1 warning
[INFO] [stderr] warning: `my-redis` (example "hello-redis") generated 2 warnings
[INFO] [stderr] warning: `my-redis` (example "stream") generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/my_redis-e9e4333cff3161e5)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "b6575f0d2a35c5a729d13c05d4de045ff7b4eef92332c15ed2ad598e445b1b55", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b6575f0d2a35c5a729d13c05d4de045ff7b4eef92332c15ed2ad598e445b1b55", kill_on_drop: false }`
[INFO] [stdout] b6575f0d2a35c5a729d13c05d4de045ff7b4eef92332c15ed2ad598e445b1b55