[INFO] fetching crate serde_unit_struct 0.1.3...
[INFO] checking serde_unit_struct-0.1.3 against master#f8f6997469237299c1d60814c7b9828602a1f8e4 for pr-143808
[INFO] extracting crate serde_unit_struct 0.1.3 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate serde_unit_struct 0.1.3
[INFO] finished tweaking crates.io crate serde_unit_struct 0.1.3
[INFO] tweaked toml for crates.io crate serde_unit_struct 0.1.3 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate serde_unit_struct 0.1.3 on toolchain f8f6997469237299c1d60814c7b9828602a1f8e4
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f8f6997469237299c1d60814c7b9828602a1f8e4" "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" "+f8f6997469237299c1d60814c7b9828602a1f8e4" "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
[INFO] [stderr]      Locking 88 packages to latest compatible versions
[INFO] [stderr]       Adding toml v0.8.23 (available: v0.9.2)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f8f6997469237299c1d60814c7b9828602a1f8e4" "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
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded bson v2.15.0
[INFO] [stderr] error: failed to unpack package `bson v2.15.0`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   failed to unpack entry at `bson-2.15.0/.cargo_vcs_info.json`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   failed to unpack `/workspace/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/bson-2.15.0/.cargo_vcs_info.json`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   failed to unpack `bson-2.15.0/.cargo_vcs_info.json` into `/workspace/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/bson-2.15.0/.cargo_vcs_info.json`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   No space left on device (os error 28)


command failed: exit status: 101

    Blocking waiting for file lock on package cache
    Blocking waiting for file lock on package cache
 Downloading crates ...
  Downloaded bson v2.15.0
error: failed to unpack package `bson v2.15.0`

Caused by:
  failed to unpack entry at `bson-2.15.0/.cargo_vcs_info.json`

Caused by:
  failed to unpack `/workspace/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/bson-2.15.0/.cargo_vcs_info.json`

Caused by:
  failed to unpack `bson-2.15.0/.cargo_vcs_info.json` into `/workspace/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/bson-2.15.0/.cargo_vcs_info.json`

Caused by:
  No space left on device (os error 28)