[INFO] fetching crate sling 0.2.0...
[INFO] checking sling-0.2.0 against nightly-2024-02-05 for check-cfg
[INFO] extracting crate sling 0.2.0 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate sling 0.2.0 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 sling 0.2.0
[INFO] finished tweaking crates.io crate sling 0.2.0
[INFO] tweaked toml for crates.io crate sling 0.2.0 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+nightly-2024-02-05" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[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-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 011da5ca5ea070e81caabdc1e7b0a062b0e37f7eec3f45326417cb2014cba42b
[INFO] running `Command { std: "docker" "start" "-a" "011da5ca5ea070e81caabdc1e7b0a062b0e37f7eec3f45326417cb2014cba42b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "011da5ca5ea070e81caabdc1e7b0a062b0e37f7eec3f45326417cb2014cba42b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "011da5ca5ea070e81caabdc1e7b0a062b0e37f7eec3f45326417cb2014cba42b", kill_on_drop: false }`
[INFO] [stdout] 011da5ca5ea070e81caabdc1e7b0a062b0e37f7eec3f45326417cb2014cba42b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] bec7a8c753aae89cb174c26b4c907e99376235c79ec13ae9b2d5e83b76838949
[INFO] running `Command { std: "docker" "start" "-a" "bec7a8c753aae89cb174c26b4c907e99376235c79ec13ae9b2d5e83b76838949", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.196
[INFO] [stderr]     Checking regex-syntax v0.8.2
[INFO] [stderr]     Checking regex-syntax v0.6.29
[INFO] [stderr]     Checking half v2.3.1
[INFO] [stderr]     Checking ciborium-io v0.2.2
[INFO] [stderr]    Compiling syn v2.0.48
[INFO] [stderr]     Checking plotters-backend v0.3.5
[INFO] [stderr]    Compiling generator v0.7.5
[INFO] [stderr]     Checking cast v0.3.0
[INFO] [stderr]     Checking crossbeam-queue v0.3.11
[INFO] [stderr]     Checking crossbeam-channel v0.5.11
[INFO] [stderr]     Checking scoped-tls v1.0.1
[INFO] [stderr]     Checking clap v3.2.25
[INFO] [stderr]     Checking owned-alloc v0.2.0
[INFO] [stderr]     Checking oorandom v11.1.3
[INFO] [stderr]     Checking anes v0.1.6
[INFO] [stderr]     Checking sling v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking lockfree v0.5.1
[INFO] [stderr]     Checking criterion-plot v0.5.0
[INFO] [stderr]     Checking plotters-svg v0.3.5
[INFO] [stderr]     Checking ciborium-ll v0.2.2
[INFO] [stderr]     Checking plotters v0.3.5
[INFO] [stderr]     Checking crossbeam v0.8.4
[INFO] [stderr]     Checking regex-automata v0.4.5
[INFO] [stderr]     Checking regex-automata v0.1.10
[INFO] [stderr]     Checking matchers v0.1.0
[INFO] [stderr]     Checking regex v1.10.3
[INFO] [stderr]    Compiling serde_derive v1.0.196
[INFO] [stderr]    Compiling tracing-attributes v0.1.27
[INFO] [stderr]     Checking tracing v0.1.40
[INFO] [stderr]     Checking tracing-subscriber v0.3.18
[INFO] [stderr]     Checking loom v0.5.6
[INFO] [stderr]     Checking serde_json v1.0.113
[INFO] [stderr]     Checking ciborium v0.2.2
[INFO] [stderr]     Checking tinytemplate v1.2.1
[INFO] [stderr]     Checking criterion v0.4.0
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> benches/buffer.rs:46:17
[INFO] [stdout]    |
[INFO] [stdout] 46 |                 writer.try_send(PAYLOAD);
[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] 46 |                 let _ = writer.try_send(PAYLOAD);
[INFO] [stdout]    |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> benches/buffer.rs:84:17
[INFO] [stdout]    |
[INFO] [stdout] 84 |                 writer.send(PAYLOAD);
[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] 84 |                 let _ = writer.send(PAYLOAD);
[INFO] [stdout]    |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> benches/buffer.rs:177:9
[INFO] [stdout]     |
[INFO] [stdout] 177 |         writer.try_send(PAYLOAD);
[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] 177 |         let _ = writer.try_send(PAYLOAD);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> benches/buffer.rs:201:9
[INFO] [stdout]     |
[INFO] [stdout] 201 |         writer.send(PAYLOAD);
[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] 201 |         let _ = writer.send(PAYLOAD);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.60s
[INFO] running `Command { std: "docker" "inspect" "bec7a8c753aae89cb174c26b4c907e99376235c79ec13ae9b2d5e83b76838949", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bec7a8c753aae89cb174c26b4c907e99376235c79ec13ae9b2d5e83b76838949", kill_on_drop: false }`
[INFO] [stdout] bec7a8c753aae89cb174c26b4c907e99376235c79ec13ae9b2d5e83b76838949
