[INFO] crate argmin_core 0.2.0 is already in cache
[INFO] extracting crate argmin_core 0.2.0 into work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/reg/argmin_core/0.2.0
[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 argmin_core version 0.2.0
[ERROR] caused by: failed to fill whole buffer
[ERROR]