[INFO] cloning repository https://github.com/whentze/cursed_rustc_driver
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/whentze/cursed_rustc_driver" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwhentze%2Fcursed_rustc_driver", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwhentze%2Fcursed_rustc_driver'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] bd704715282796da14025a0540479ed41d00496b
[INFO] checking whentze/cursed_rustc_driver/bd704715282796da14025a0540479ed41d00496b against master#507271bc119683008ec719ecee48814e8ac86c65 for pr-146440
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwhentze%2Fcursed_rustc_driver" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-7-tc1/source/.cargo/config.toml
[INFO] removed /workspace/builds/worker-7-tc1/source/rust-toolchain.toml
[INFO] started tweaking git repo https://github.com/whentze/cursed_rustc_driver
[INFO] finished tweaking git repo https://github.com/whentze/cursed_rustc_driver
[INFO] tweaked toml for git repo https://github.com/whentze/cursed_rustc_driver written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/whentze/cursed_rustc_driver on toolchain 507271bc119683008ec719ecee48814e8ac86c65
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+507271bc119683008ec719ecee48814e8ac86c65" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/whentze/cursed_rustc_driver 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" "+507271bc119683008ec719ecee48814e8ac86c65" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `https://github.com/rust-lang/rust.git`
[INFO] [stderr]     Updating git submodule `https://github.com/rust-lang/backtrace-rs.git`
[INFO] [stderr]     Updating git submodule `https://github.com/rust-lang/stdarch.git`
[INFO] [stderr]     Updating git submodule `https://github.com/ARM-software/acle.git`
[INFO] [stderr]     Updating git submodule `https://github.com/rust-lang/book.git`
[INFO] [stderr]     Updating git submodule `https://github.com/rust-lang/edition-guide.git`
[INFO] [stderr]     Updating git submodule `https://github.com/rust-embedded/book.git`
[INFO] [stderr]     Updating git submodule `https://github.com/rust-lang/nomicon.git`
[INFO] [stderr]     Updating git submodule `https://github.com/rust-lang/reference.git`
[INFO] [stderr]     Updating git submodule `https://github.com/rust-lang/rust-by-example.git`
[INFO] [stderr]     Updating git submodule `https://github.com/rust-lang/rustc-dev-guide.git`
[INFO] [stderr]     Updating git submodule `https://github.com/rust-lang/llvm-project.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