[INFO] cloning repository https://github.com/Wizdave97/my-redis-client [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Wizdave97/my-redis-client" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FWizdave97%2Fmy-redis-client", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FWizdave97%2Fmy-redis-client'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 6192526147eff265b948c9a34ed47d0f55d11b16 [INFO] checking Wizdave97/my-redis-client against master#bca37a20bd376ce3fd138e7cdee7fe704e0f8814 for pr-139493-3 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FWizdave97%2Fmy-redis-client" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/Wizdave97/my-redis-client [INFO] finished tweaking git repo https://github.com/Wizdave97/my-redis-client [INFO] tweaked toml for git repo https://github.com/Wizdave97/my-redis-client written to /workspace/builds/worker-3-tc1/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/Wizdave97/my-redis-client on toolchain bca37a20bd376ce3fd138e7cdee7fe704e0f8814 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/Wizdave97/my-redis-client 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" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded async-stream v0.3.1 [INFO] [stderr] Downloaded async-stream-impl v0.3.1 [INFO] [stderr] Downloaded tokio-stream v0.1.5 [INFO] [stderr] Downloaded mini-redis v0.4.0 [INFO] [stderr] Downloaded tokio v1.5.0 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 4873ae4b4db635269684f6542606fe94e0b152e70c072a4b564be62965c59a60 [INFO] running `Command { std: "docker" "start" "-a" "4873ae4b4db635269684f6542606fe94e0b152e70c072a4b564be62965c59a60", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "4873ae4b4db635269684f6542606fe94e0b152e70c072a4b564be62965c59a60", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "4873ae4b4db635269684f6542606fe94e0b152e70c072a4b564be62965c59a60", kill_on_drop: false }` [INFO] [stdout] 4873ae4b4db635269684f6542606fe94e0b152e70c072a4b564be62965c59a60 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 2488d2cbf1be57804478bc615aa8773f744deb655a78e1cf25c8e6e2ef343cfc [INFO] running `Command { std: "docker" "start" "-a" "2488d2cbf1be57804478bc615aa8773f744deb655a78e1cf25c8e6e2ef343cfc", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.26 [INFO] [stderr] Compiling syn v1.0.70 [INFO] [stderr] Compiling serde v1.0.125 [INFO] [stderr] Compiling memchr v2.3.4 [INFO] [stderr] Checking tracing-core v0.1.17 [INFO] [stderr] Compiling tokio v1.5.0 [INFO] [stderr] Checking num_cpus v1.13.0 [INFO] [stderr] Checking byteorder v1.4.3 [INFO] [stderr] Checking mio v0.7.11 [INFO] [stderr] Checking atty v0.2.14 [INFO] [stderr] Checking itoa v0.4.7 [INFO] [stderr] Checking futures-core v0.3.14 [INFO] [stderr] Checking chrono v0.4.19 [INFO] [stderr] Checking regex v1.4.6 [INFO] [stderr] Checking sharded-slab v0.1.1 [INFO] [stderr] Checking atoi v0.3.3 [INFO] [stderr] Checking clap v2.33.3 [INFO] [stderr] Checking dashmap v4.0.2 [INFO] [stderr] Checking regex-automata v0.1.9 [INFO] [stderr] Checking tracing-log v0.1.2 [INFO] [stderr] Compiling quote v1.0.9 [INFO] [stderr] Compiling proc-macro-error-attr v1.0.4 [INFO] [stderr] Checking matchers v0.0.1 [INFO] [stderr] Checking tracing-serde v0.1.2 [INFO] [stderr] Checking serde_json v1.0.64 [INFO] [stderr] Compiling proc-macro-error v1.0.4 [INFO] [stderr] Compiling tracing-attributes v0.1.15 [INFO] [stderr] Compiling pin-project-internal v1.0.7 [INFO] [stderr] Compiling tokio-macros v1.1.0 [INFO] [stderr] Compiling async-stream-impl v0.3.1 [INFO] [stderr] Compiling structopt-derive v0.4.14 [INFO] [stderr] Checking async-stream v0.3.1 [INFO] [stderr] Checking tracing v0.1.25 [INFO] [stderr] Checking tracing-subscriber v0.2.17 [INFO] [stderr] Checking pin-project v1.0.7 [INFO] [stderr] Checking tracing-futures v0.2.5 [INFO] [stderr] Checking structopt v0.3.21 [INFO] [stderr] Checking tokio-stream v0.1.5 [INFO] [stderr] Checking mini-redis v0.4.0 [INFO] [stderr] Checking my-redis v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/bin/client.rs:43:18 [INFO] [stdout] | [INFO] [stdout] 43 | let (tx, mut rx) = sync::oneshot::channel(); [INFO] [stdout] | ----^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/bin/client.rs:52:18 [INFO] [stdout] | [INFO] [stdout] 52 | let (tx, mut rx) = sync::oneshot::channel(); [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] --> src/bin/client.rs:43:18 [INFO] [stdout] | [INFO] [stdout] 43 | let (tx, mut rx) = sync::oneshot::channel(); [INFO] [stdout] | ----^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/bin/client.rs:52:18 [INFO] [stdout] | [INFO] [stdout] 52 | let (tx, mut rx) = sync::oneshot::channel(); [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/bin/client.rs:31:21 [INFO] [stdout] | [INFO] [stdout] 31 | resp.send(res); [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 31 | let _ = resp.send(res); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/bin/client.rs:36:21 [INFO] [stdout] | [INFO] [stdout] 36 | resp.send(res); [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 36 | let _ = resp.send(res); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/bin/client.rs:44:9 [INFO] [stdout] | [INFO] [stdout] 44 | tx1.send(Command::Get{key: "hello", resp: tx}).await; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 44 | let _ = tx1.send(Command::Get{key: "hello", resp: tx}).await; [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/bin/client.rs:53:9 [INFO] [stdout] | [INFO] [stdout] 53 | tx2.send(Command::Set{key: "foo", value: "bar".to_string(), resp: tx}).await; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 53 | let _ = tx2.send(Command::Set{key: "foo", value: "bar".to_string(), resp: tx}).await; [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/bin/client.rs:31:21 [INFO] [stdout] | [INFO] [stdout] 31 | resp.send(res); [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 31 | let _ = resp.send(res); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/bin/client.rs:36:21 [INFO] [stdout] | [INFO] [stdout] 36 | resp.send(res); [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 36 | let _ = resp.send(res); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/bin/client.rs:44:9 [INFO] [stdout] | [INFO] [stdout] 44 | tx1.send(Command::Get{key: "hello", resp: tx}).await; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 44 | let _ = tx1.send(Command::Get{key: "hello", resp: tx}).await; [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/bin/client.rs:53:9 [INFO] [stdout] | [INFO] [stdout] 53 | tx2.send(Command::Set{key: "foo", value: "bar".to_string(), resp: tx}).await; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 53 | let _ = tx2.send(Command::Set{key: "foo", value: "bar".to_string(), resp: tx}).await; [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 17.08s [INFO] running `Command { std: "docker" "inspect" "2488d2cbf1be57804478bc615aa8773f744deb655a78e1cf25c8e6e2ef343cfc", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "2488d2cbf1be57804478bc615aa8773f744deb655a78e1cf25c8e6e2ef343cfc", kill_on_drop: false }` [INFO] [stdout] 2488d2cbf1be57804478bc615aa8773f744deb655a78e1cf25c8e6e2ef343cfc