[INFO] crate google-dataflow1_b4 0.1.5+20150401 is already in cache
[INFO] extracting crate google-dataflow1_b4 0.1.5+20150401 into work/ex/beta-1.38-1/sources/1.37.0/reg/google-dataflow1_b4/0.1.5+20150401
[ERROR] No such file or directory (os error 2)
[INFO] retrying in 10ms
[ERROR] No such file or directory (os error 2)
[INFO] retrying in 20ms
[ERROR] this task or one of its parent failed!
[ERROR] unable to download google-dataflow1_b4 version 0.1.5+20150401
[ERROR] caused by: invalid gzip header
[ERROR]