[INFO] fetching crate cargo-unused-features 0.2.0...
[INFO] checking cargo-unused-features-0.2.0 against master#3350c1eb3fd8fe1bee1ed4c76944d707bd256876 for pr-140558
[INFO] extracting crate cargo-unused-features 0.2.0 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate cargo-unused-features 0.2.0 on toolchain 3350c1eb3fd8fe1bee1ed4c76944d707bd256876
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3350c1eb3fd8fe1bee1ed4c76944d707bd256876" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cargo-unused-features 0.2.0
[INFO] finished tweaking crates.io crate cargo-unused-features 0.2.0
[INFO] tweaked toml for crates.io crate cargo-unused-features 0.2.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate crates.io crate cargo-unused-features 0.2.0 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" "+3350c1eb3fd8fe1bee1ed4c76944d707bd256876" "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 cargo-util v0.2.3
[INFO] [stderr]   Downloaded miow v0.5.0
[INFO] [stderr]   Downloaded http-auth v0.1.8
[INFO] [stderr]   Downloaded toml_edit v0.19.3
[INFO] [stderr]   Downloaded git2-curl v0.17.0
[INFO] [stderr]   Downloaded crates-io v0.35.0
[INFO] [stderr]   Downloaded cargo_toml v0.15.1
[INFO] [stderr]   Downloaded cargo v0.68.0
[INFO] [stderr] error: failed to unpack package `cargo v0.68.0`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   failed to unpack entry at `cargo-0.68.0/src/cargo/core/compiler/unit_dependencies.rs`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   failed to unpack `/workspace/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/cargo-0.68.0/src/cargo/core/compiler/unit_dependencies.rs`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   failed to unpack `cargo-0.68.0/src/cargo/core/compiler/unit_dependencies.rs` into `/workspace/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/cargo-0.68.0/src/cargo/core/compiler/unit_dependencies.rs`
[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 cargo-util v0.2.3
  Downloaded miow v0.5.0
  Downloaded http-auth v0.1.8
  Downloaded toml_edit v0.19.3
  Downloaded git2-curl v0.17.0
  Downloaded crates-io v0.35.0
  Downloaded cargo_toml v0.15.1
  Downloaded cargo v0.68.0
error: failed to unpack package `cargo v0.68.0`

Caused by:
  failed to unpack entry at `cargo-0.68.0/src/cargo/core/compiler/unit_dependencies.rs`

Caused by:
  failed to unpack `/workspace/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/cargo-0.68.0/src/cargo/core/compiler/unit_dependencies.rs`

Caused by:
  failed to unpack `cargo-0.68.0/src/cargo/core/compiler/unit_dependencies.rs` into `/workspace/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/cargo-0.68.0/src/cargo/core/compiler/unit_dependencies.rs`

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