[INFO] fetching crate mwc-libp2p-kad 0.28.2...
[INFO] testing mwc-libp2p-kad-0.28.2 against master#f9988fefd3add01f414f52b414308e7872622fee for pr-155114
[INFO] extracting crate mwc-libp2p-kad 0.28.2 into /workspace/builds/worker-5-tc1/source
[INFO] started tweaking crates.io crate mwc-libp2p-kad 0.28.2
[INFO] finished tweaking crates.io crate mwc-libp2p-kad 0.28.2
[INFO] tweaked toml for crates.io crate mwc-libp2p-kad 0.28.2 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate mwc-libp2p-kad 0.28.2 on toolchain f9988fefd3add01f414f52b414308e7872622fee
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f9988fefd3add01f414f52b414308e7872622fee" "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" "+f9988fefd3add01f414f52b414308e7872622fee" "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 228 packages to latest compatible versions
[INFO] [stderr]       Adding arrayvec v0.5.2 (available: v0.7.6)
[INFO] [stderr]       Adding asynchronous-codec v0.6.2 (available: v0.7.0)
[INFO] [stderr]       Adding prost v0.7.0 (available: v0.14.3)
[INFO] [stderr]       Adding prost-build v0.7.0 (available: v0.14.3)
[INFO] [stderr]       Adding quickcheck v0.9.2 (available: v1.1.0)
[INFO] [stderr]       Adding rand v0.7.3 (available: v0.10.1)
[INFO] [stderr]       Adding sha2 v0.9.9 (available: v0.11.0)
[INFO] [stderr]       Adding uint v0.9.5 (available: v0.10.0)
[INFO] [stderr]       Adding unsigned-varint v0.7.2 (available: v0.8.0)
[INFO] [stderr]       Adding zeroize v1.3.0 (available: v1.8.2)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f9988fefd3add01f414f52b414308e7872622fee" "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] error: failed to download `hashbrown v0.17.0`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   unable to get packages from source
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   failed to unpack package `hashbrown v0.17.0`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   failed to unpack entry at `hashbrown-0.17.0/src/set.rs`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   failed to unpack `/workspace/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/hashbrown-0.17.0/src/set.rs`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   failed to unpack `hashbrown-0.17.0/src/set.rs` into `/workspace/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/hashbrown-0.17.0/src/set.rs`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   No space left on device (os error 28)


overridden task result to prepare-fail:unknown

Caused by:
    0: uncategorized prepare error
    1: command failed: exit status: 101
       
           Blocking waiting for file lock on package cache
           Blocking waiting for file lock on package cache
        Downloading crates ...
       error: failed to download `hashbrown v0.17.0`
       
       Caused by:
         unable to get packages from source
       
       Caused by:
         failed to unpack package `hashbrown v0.17.0`
       
       Caused by:
         failed to unpack entry at `hashbrown-0.17.0/src/set.rs`
       
       Caused by:
         failed to unpack `/workspace/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/hashbrown-0.17.0/src/set.rs`
       
       Caused by:
         failed to unpack `hashbrown-0.17.0/src/set.rs` into `/workspace/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/hashbrown-0.17.0/src/set.rs`
       
       Caused by:
         No space left on device (os error 28)