elastic-arm-c7c4897b: building rgdbkhyrmfs5iy1wl1923nzh2qrr39sp-source.drv

trying https://github.com/VCVRack/rtaudio/archive/ece277bd839603648c80c8a5f145678e13bc23f3.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  242k    0  242k    0     0   496k      0 --:--:-- --:--:-- --:--:--  496k
unpacking source archive /build/ece277bd839603648c80c8a5f145678e13bc23f3.tar.gz