[INFO] cloning repository https://github.com/leo030303/servo_browser
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/leo030303/servo_browser" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fleo030303%2Fservo_browser", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fleo030303%2Fservo_browser'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3fea1331d00268155cfe8b08b1b46d5916ae951a
[INFO] checking leo030303/servo_browser against 4fcf39725a9c99bd495d8c73af83628a256ff9a9 for pr-162233-crater-rollup
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fleo030303%2Fservo_browser" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/leo030303/servo_browser
[INFO] finished tweaking git repo https://github.com/leo030303/servo_browser
[INFO] tweaked toml for git repo https://github.com/leo030303/servo_browser written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/leo030303/servo_browser on toolchain 4fcf39725a9c99bd495d8c73af83628a256ff9a9
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4fcf39725a9c99bd495d8c73af83628a256ff9a9" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/leo030303/servo_browser 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" "+4fcf39725a9c99bd495d8c73af83628a256ff9a9" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: binary `servo_browser` should have a kebab-case name
[INFO] [stderr]     |
[INFO] [stderr]   1 | /workspace/builds/worker-2-tc1/source/target/.../servo_browser
[INFO] [stderr]     |                                                  ^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `cargo::non_kebab_case_bins` is set to `warn` by default
[INFO] [stderr] help: to change the binary name to `servo-browser`, convert `package.name`
[INFO] [stderr]    --> Cargo.toml:123:8
[INFO] [stderr]     |
[INFO] [stderr] 123 - name = "servo_browser"
[INFO] [stderr] 123 + name = "servo-browser"
[INFO] [stderr]     |
[INFO] [stderr] help: to change the binary name to `servo-browser`, specify `bin.name`
[INFO] [stderr]    --> Cargo.toml:155:21
[INFO] [stderr]     |
[INFO] [stderr] 155 ~ winresource = "0.1"
[INFO] [stderr] 156 + [[bin]]
[INFO] [stderr] 157 + name = "servo-browser"
[INFO] [stderr] 158 + path = "src/main.rs"
[INFO] [stderr]     |
[INFO] [stderr] warning: `servo_browser` (manifest) generated 1 warning
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Updating git repository `https://github.com/servo/servo.git`
[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