[INFO] fetching crate synapse-rpc-core 0.0.2...
[INFO] testing synapse-rpc-core-0.0.2 against master#ec6f9a5b4413f74386267ef8efc93712c2ce6db6 for pr-155739
[INFO] extracting crate synapse-rpc-core 0.0.2 into /workspace/builds/worker-2-tc1/source


overridden task result to prepare-fail:unknown

Caused by:
    0: uncategorized prepare error
    1: unable to download synapse-rpc-core version 0.0.2
    2: failed to unpack `synapse-rpc-core-0.0.2/src/codec/json.rs` into `/workspace/builds/worker-2-tc1/source/src/codec/json.rs`
    3: No space left on device (os error 28)