[INFO] fetching crate optional_struct 0.5.2...
[INFO] checking optional_struct-0.5.2 against master#2a023bf80a6fbd6a06d5460a34eb247b986286ed for pr-143764
[INFO] extracting crate optional_struct 0.5.2 into /workspace/builds/worker-6-tc1/source


unable to download optional_struct version 0.5.2

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