[INFO] fetching crate reg-index 0.6.0...
[INFO] checking reg-index-0.6.0 against try#3fada14ee01d755dc8076e611f11bf65b28ffd21 for pr-154971
[INFO] extracting crate reg-index 0.6.0 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate reg-index 0.6.0
[INFO] finished tweaking crates.io crate reg-index 0.6.0
[INFO] tweaked toml for crates.io crate reg-index 0.6.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate reg-index 0.6.0 on toolchain 3fada14ee01d755dc8076e611f11bf65b28ffd21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3fada14ee01d755dc8076e611f11bf65b28ffd21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3fada14ee01d755dc8076e611f11bf65b28ffd21" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] checking reg-index-0.6.0 against try#3fada14ee01d755dc8076e611f11bf65b28ffd21 for pr-154971
[INFO] extracting crate reg-index 0.6.0 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate reg-index 0.6.0
[INFO] finished tweaking crates.io crate reg-index 0.6.0
[INFO] tweaked toml for crates.io crate reg-index 0.6.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate reg-index 0.6.0 on toolchain 3fada14ee01d755dc8076e611f11bf65b28ffd21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3fada14ee01d755dc8076e611f11bf65b28ffd21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3fada14ee01d755dc8076e611f11bf65b28ffd21" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] checking reg-index-0.6.0 against try#3fada14ee01d755dc8076e611f11bf65b28ffd21 for pr-154971
[INFO] extracting crate reg-index 0.6.0 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate reg-index 0.6.0
[INFO] finished tweaking crates.io crate reg-index 0.6.0
[INFO] tweaked toml for crates.io crate reg-index 0.6.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate reg-index 0.6.0 on toolchain 3fada14ee01d755dc8076e611f11bf65b28ffd21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3fada14ee01d755dc8076e611f11bf65b28ffd21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3fada14ee01d755dc8076e611f11bf65b28ffd21" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] checking reg-index-0.6.0 against try#3fada14ee01d755dc8076e611f11bf65b28ffd21 for pr-154971
[INFO] extracting crate reg-index 0.6.0 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate reg-index 0.6.0
[INFO] finished tweaking crates.io crate reg-index 0.6.0
[INFO] tweaked toml for crates.io crate reg-index 0.6.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate reg-index 0.6.0 on toolchain 3fada14ee01d755dc8076e611f11bf65b28ffd21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3fada14ee01d755dc8076e611f11bf65b28ffd21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3fada14ee01d755dc8076e611f11bf65b28ffd21" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 122 packages to latest compatible versions
[INFO] [stderr]       Adding cargo_metadata v0.18.1 (available: v0.23.1)
[INFO] [stderr]       Adding generic-array v0.14.7 (available: v0.14.9)
[INFO] [stderr]       Adding git2 v0.18.3 (available: v0.20.4)
[INFO] [stderr]       Adding sha2 v0.10.9 (available: v0.11.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3fada14ee01d755dc8076e611f11bf65b28ffd21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] checking reg-index-0.6.0 against try#3fada14ee01d755dc8076e611f11bf65b28ffd21 for pr-154971
[INFO] extracting crate reg-index 0.6.0 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate reg-index 0.6.0
[INFO] finished tweaking crates.io crate reg-index 0.6.0
[INFO] tweaked toml for crates.io crate reg-index 0.6.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate reg-index 0.6.0 on toolchain 3fada14ee01d755dc8076e611f11bf65b28ffd21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3fada14ee01d755dc8076e611f11bf65b28ffd21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3fada14ee01d755dc8076e611f11bf65b28ffd21" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[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