[INFO] cloning repository https://github.com/tsinghtech-research/mqsrv-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tsinghtech-research/mqsrv-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftsinghtech-research%2Fmqsrv-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftsinghtech-research%2Fmqsrv-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 22bb2270a64a43255573605aad10ea12bf0ddcfc
[INFO] checking tsinghtech-research/mqsrv-rs against 7211ea594cbf137ef6118b1752b959dea7cb9088 for pr-164148-crater-rollup
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftsinghtech-research%2Fmqsrv-rs" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/tsinghtech-research/mqsrv-rs
[INFO] finished tweaking git repo https://github.com/tsinghtech-research/mqsrv-rs
[INFO] tweaked toml for git repo https://github.com/tsinghtech-research/mqsrv-rs written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/tsinghtech-research/mqsrv-rs on toolchain 7211ea594cbf137ef6118b1752b959dea7cb9088
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7211ea594cbf137ef6118b1752b959dea7cb9088" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/tsinghtech-research/mqsrv-rs 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" "+7211ea594cbf137ef6118b1752b959dea7cb9088" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: Cargo.toml: file `/workspace/builds/worker-7-tc1/source/examples/run_client.rs` found to be present in multiple build targets:
[INFO] [stderr]   * `bin` target `run_client`
[INFO] [stderr]   * `example` target `run_client`
[INFO] [stderr] warning: Cargo.toml: file `/workspace/builds/worker-7-tc1/source/examples/run_client_event.rs` found to be present in multiple build targets:
[INFO] [stderr]   * `bin` target `run_client_event`
[INFO] [stderr]   * `example` target `run_client_event`
[INFO] [stderr] warning: Cargo.toml: file `/workspace/builds/worker-7-tc1/source/examples/run_server_event.rs` found to be present in multiple build targets:
[INFO] [stderr]   * `bin` target `run_server_event`
[INFO] [stderr]   * `example` target `run_server_event`
[INFO] [stderr] warning: Cargo.toml: file `/workspace/builds/worker-7-tc1/source/examples/run_server.rs` found to be present in multiple build targets:
[INFO] [stderr]   * `bin` target `run_server`
[INFO] [stderr]   * `example` target `run_server`
[INFO] [stderr] warning: `mqsrv-rs` (manifest) generated 4 warnings
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds


overridden task result to prepare-fail:timeout

Caused by:
    0: uncategorized prepare error
    1: no output for 300 seconds