[INFO] fetching crate cf 0.0.10...
[INFO] checking cf-0.0.10 against nightly-2024-02-05 for check-cfg
[INFO] extracting crate cf 0.0.10 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate cf 0.0.10 on toolchain nightly-2024-02-05
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+nightly-2024-02-05" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cf 0.0.10
[INFO] finished tweaking crates.io crate cf 0.0.10
[INFO] tweaked toml for crates.io crate cf 0.0.10 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate crates.io crate cf 0.0.10 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" "+nightly-2024-02-05" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded futures-sink v0.3.19
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[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+nightly-2024-02-05" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6d1fc4383bd82cfc6c71c775cc27e4f3c38dc4255ca1b6abd809febc6deb8c15
[INFO] running `Command { std: "docker" "start" "-a" "6d1fc4383bd82cfc6c71c775cc27e4f3c38dc4255ca1b6abd809febc6deb8c15", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6d1fc4383bd82cfc6c71c775cc27e4f3c38dc4255ca1b6abd809febc6deb8c15", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6d1fc4383bd82cfc6c71c775cc27e4f3c38dc4255ca1b6abd809febc6deb8c15", kill_on_drop: false }`
[INFO] [stdout] 6d1fc4383bd82cfc6c71c775cc27e4f3c38dc4255ca1b6abd809febc6deb8c15
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+nightly-2024-02-05" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e971407b878b0e4a4785bfd33423f09c12e9fe0396e467443d7bcd27bdea68af
[INFO] running `Command { std: "docker" "start" "-a" "e971407b878b0e4a4785bfd33423f09c12e9fe0396e467443d7bcd27bdea68af", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.112
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
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[INFO] [stderr]    Compiling syn v1.0.85
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]     Checking bytes v1.1.0
[INFO] [stderr]    Compiling cc v1.0.72
[INFO] [stderr]    Compiling pkg-config v0.3.24
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[INFO] [stderr]    Compiling futures-task v0.3.19
[INFO] [stderr]     Checking tinyvec_macros v0.1.0
[INFO] [stderr]     Checking foreign-types-shared v0.1.1
[INFO] [stderr]     Checking fnv v1.0.7
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[INFO] [stderr]    Compiling async-trait v0.1.53
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[INFO] [stderr]     Checking tower-service v0.3.1
[INFO] [stderr]    Compiling encoding_rs v0.8.30
[INFO] [stderr]     Checking ppv-lite86 v0.2.16
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[INFO] [stderr]     Checking unicode-normalization v0.1.19
[INFO] [stderr]     Checking sha1 v0.2.0
[INFO] [stderr]     Checking dtoa v0.4.8
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]    Compiling openssl-sys v0.9.72
[INFO] [stderr]     Checking mime v0.3.16
[INFO] [stderr]     Checking dotenv v0.15.0
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking http-body v0.4.4
[INFO] [stderr]     Checking idna v0.2.3
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking url v2.2.2
[INFO] [stderr]    Compiling tokio-macros v1.8.2
[INFO] [stderr]     Checking tokio v1.15.0
[INFO] [stderr]     Checking redis v0.21.5
[INFO] [stderr]     Checking tokio-util v0.6.9
[INFO] [stderr]     Checking tokio-native-tls v0.3.0
[INFO] [stderr]     Checking h2 v0.3.10
[INFO] [stderr]     Checking serde_urlencoded v0.7.0
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[INFO] [stderr]     Checking hyper-tls v0.5.0
[INFO] [stderr]     Checking reqwest v0.11.8
[INFO] [stderr]     Checking cf v0.0.10 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     db.sadd("hello", "world");
[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)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let _ = db.sadd("hello", "world");
[INFO] [stdout]   |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     db.sadd("hello", "world");
[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)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let _ = db.sadd("hello", "world");
[INFO] [stdout]   |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]  --> src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     db.sadd("hello", "good");
[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] 7 |     let _ = db.sadd("hello", "good");
[INFO] [stdout]   |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]  --> src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     db.sadd("hello", "good");
[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] 7 |     let _ = db.sadd("hello", "good");
[INFO] [stdout]   |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     db.sclear("hello");
[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] 11 |     let _ = db.sclear("hello");
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     db.set("hello", "world");
[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] 12 |     let _ = db.set("hello", "world");
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     db.sclear("hello");
[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] 11 |     let _ = db.sclear("hello");
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     db.set("hello", "world");
[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] 12 |     let _ = db.set("hello", "world");
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.46s
[INFO] running `Command { std: "docker" "inspect" "e971407b878b0e4a4785bfd33423f09c12e9fe0396e467443d7bcd27bdea68af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e971407b878b0e4a4785bfd33423f09c12e9fe0396e467443d7bcd27bdea68af", kill_on_drop: false }`
[INFO] [stdout] e971407b878b0e4a4785bfd33423f09c12e9fe0396e467443d7bcd27bdea68af
[INFO] checking cf-0.0.10 against nightly-2024-02-05+rustflags=-Dunexpected_cfgs+cargoflags=-Zcheck-cfg for check-cfg
[INFO] extracting crate cf 0.0.10 into /workspace/builds/worker-6-tc2/source
[INFO] validating manifest of crates.io crate cf 0.0.10 on toolchain nightly-2024-02-05
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+nightly-2024-02-05" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cf 0.0.10
[INFO] finished tweaking crates.io crate cf 0.0.10
[INFO] tweaked toml for crates.io crate cf 0.0.10 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate crates.io crate cf 0.0.10 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" "+nightly-2024-02-05" "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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+nightly-2024-02-05" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4b0c63c1d9f79c1855dffe1273d8ea86e392745ca8389a26a12b5321c33f546e
[INFO] running `Command { std: "docker" "start" "-a" "4b0c63c1d9f79c1855dffe1273d8ea86e392745ca8389a26a12b5321c33f546e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4b0c63c1d9f79c1855dffe1273d8ea86e392745ca8389a26a12b5321c33f546e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4b0c63c1d9f79c1855dffe1273d8ea86e392745ca8389a26a12b5321c33f546e", kill_on_drop: false }`
[INFO] [stdout] 4b0c63c1d9f79c1855dffe1273d8ea86e392745ca8389a26a12b5321c33f546e
[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 -Dunexpected_cfgs" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+nightly-2024-02-05" "check" "--frozen" "--all" "--all-targets" "--message-format=json" "-Zcheck-cfg", kill_on_drop: false }`
[INFO] [stdout] 8244c4c4502ad2c15a9a0de334054c1f5f4f80f552489caa6d72b5f93fbac408
[INFO] running `Command { std: "docker" "start" "-a" "8244c4c4502ad2c15a9a0de334054c1f5f4f80f552489caa6d72b5f93fbac408", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.112
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.85
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]     Checking bytes v1.1.0
[INFO] [stderr]     Checking pin-project-lite v0.2.8
[INFO] [stderr]    Compiling parking_lot_core v0.8.6
[INFO] [stderr]    Compiling pkg-config v0.3.24
[INFO] [stderr]    Compiling cc v1.0.72
[INFO] [stderr]     Checking instant v0.1.12
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]     Checking once_cell v1.9.0
[INFO] [stderr]    Compiling futures-core v0.3.19
[INFO] [stderr]     Checking smallvec v1.10.0
[INFO] [stderr]     Checking itoa v1.0.1
[INFO] [stderr]    Compiling futures-task v0.3.19
[INFO] [stderr]     Checking lock_api v0.4.6
[INFO] [stderr]     Checking foreign-types-shared v0.1.1
[INFO] [stderr]    Compiling serde_derive v1.0.133
[INFO] [stderr]    Compiling futures-util v0.3.19
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[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     db.sadd("hello", "world");
[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)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let _ = db.sadd("hello", "world");
[INFO] [stdout]   |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     db.sadd("hello", "world");
[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)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let _ = db.sadd("hello", "world");
[INFO] [stdout]   |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]  --> src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     db.sadd("hello", "good");
[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] 7 |     let _ = db.sadd("hello", "good");
[INFO] [stdout]   |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]  --> src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     db.sadd("hello", "good");
[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] 7 |     let _ = db.sadd("hello", "good");
[INFO] [stdout]   |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     db.sclear("hello");
[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] 11 |     let _ = db.sclear("hello");
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     db.sclear("hello");
[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] 11 |     let _ = db.sclear("hello");
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     db.set("hello", "world");
[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] 12 |     let _ = db.set("hello", "world");
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     db.set("hello", "world");
[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] 12 |     let _ = db.set("hello", "world");
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.75s
[INFO] running `Command { std: "docker" "inspect" "8244c4c4502ad2c15a9a0de334054c1f5f4f80f552489caa6d72b5f93fbac408", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8244c4c4502ad2c15a9a0de334054c1f5f4f80f552489caa6d72b5f93fbac408", kill_on_drop: false }`
[INFO] [stdout] 8244c4c4502ad2c15a9a0de334054c1f5f4f80f552489caa6d72b5f93fbac408
