[INFO] fetching crate tokio_util_watchdog 0.2.0...
[INFO] testing tokio_util_watchdog-0.2.0 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate tokio_util_watchdog 0.2.0 into /workspace/builds/worker-4-tc2/source
[INFO] removed /workspace/builds/worker-4-tc2/source/.cargo/config.toml
[INFO] started tweaking crates.io crate tokio_util_watchdog 0.2.0
[INFO] finished tweaking crates.io crate tokio_util_watchdog 0.2.0
[INFO] tweaked toml for crates.io crate tokio_util_watchdog 0.2.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate tokio_util_watchdog 0.2.0 on toolchain beta-2026-04-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate tokio_util_watchdog 0.2.0 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" "+beta-2026-04-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dcea8dc21d509909970917d29b091960cbff89859b81fffcbded28399f1e70d0
[INFO] running `Command { std: "docker" "start" "-a" "dcea8dc21d509909970917d29b091960cbff89859b81fffcbded28399f1e70d0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dcea8dc21d509909970917d29b091960cbff89859b81fffcbded28399f1e70d0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dcea8dc21d509909970917d29b091960cbff89859b81fffcbded28399f1e70d0", kill_on_drop: false }`
[INFO] [stdout] dcea8dc21d509909970917d29b091960cbff89859b81fffcbded28399f1e70d0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c3afdb1fde105b1bcbbef9037d84198e0c8a63af8eff41713027ed1d776c34c1
[INFO] running `Command { std: "docker" "start" "-a" "c3afdb1fde105b1bcbbef9037d84198e0c8a63af8eff41713027ed1d776c34c1", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.103
[INFO] [stderr]    Compiling tracing-core v0.1.36
[INFO] [stderr]    Compiling tokio v1.48.0
[INFO] [stdout] error: The `taskdump` feature requires `--cfg tokio_unstable`.
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.48.0/src/lib.rs:487:1
[INFO] [stdout]     |
[INFO] [stdout] 487 | compile_error!("The `taskdump` feature requires `--cfg tokio_unstable`.");
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling quote v1.0.42
[INFO] [stderr]    Compiling syn v2.0.111
[INFO] [stderr] error: could not compile `tokio` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "c3afdb1fde105b1bcbbef9037d84198e0c8a63af8eff41713027ed1d776c34c1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c3afdb1fde105b1bcbbef9037d84198e0c8a63af8eff41713027ed1d776c34c1", kill_on_drop: false }`
[INFO] [stdout] c3afdb1fde105b1bcbbef9037d84198e0c8a63af8eff41713027ed1d776c34c1
