[INFO] fetching crate lore 2.1.0...
[INFO] checking lore-2.1.0 against master#bb89df6903539e7014b8db29bccd6a9ee9553122 for pr-121072
[INFO] extracting crate lore 2.1.0 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate lore 2.1.0 on toolchain bb89df6903539e7014b8db29bccd6a9ee9553122
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bb89df6903539e7014b8db29bccd6a9ee9553122" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-0-tc1/source/rust-toolchain
[INFO] started tweaking crates.io crate lore 2.1.0
[INFO] finished tweaking crates.io crate lore 2.1.0
[INFO] tweaked toml for crates.io crate lore 2.1.0 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate crates.io crate lore 2.1.0 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" "+bb89df6903539e7014b8db29bccd6a9ee9553122" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[ERROR] this task or one of its parent failed!
[ERROR] no output for 300 seconds
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.