attached to the build already running on this worker
gi-build-x86-01: building l201nnfcqxnhmp0x13ynmglrb7xpllnz-source.drv
structuredAttrs is enabled

trying https://github.com/herumi/mcl/archive/v3.06.tar.gz
  % Total    % Received % Xferd  Average Speed  Time    Time    Time   Current
                                 Dload  Upload  Total   Spent   Left   Speed
  0      0   0      0   0      0      0      0                              0
100 808.0k   0 808.0k   0      0  1.58M      0                              0
unpacking source archive /build/download.tar.gz