[INFO] fetching crate backend 0.1.6...
[INFO] checking backend-0.1.6 against try#5785402183672f7786e9dc343d7b435bdaf4a4bc for pr-138001
[INFO] extracting crate backend 0.1.6 into /workspace/builds/worker-6-tc2/source
[INFO] checking backend-0.1.6 against try#5785402183672f7786e9dc343d7b435bdaf4a4bc for pr-138001
[INFO] extracting crate backend 0.1.6 into /workspace/builds/worker-6-tc2/source
[INFO] checking backend-0.1.6 against try#5785402183672f7786e9dc343d7b435bdaf4a4bc for pr-138001
[INFO] extracting crate backend 0.1.6 into /workspace/builds/worker-6-tc2/source
[INFO] checking backend-0.1.6 against try#5785402183672f7786e9dc343d7b435bdaf4a4bc for pr-138001
[INFO] extracting crate backend 0.1.6 into /workspace/builds/worker-6-tc2/source
[INFO] checking backend-0.1.6 against try#5785402183672f7786e9dc343d7b435bdaf4a4bc for pr-138001
[INFO] extracting crate backend 0.1.6 into /workspace/builds/worker-6-tc2/source


unable to download backend version 0.1.6

Caused by:
    unexpected end of file