Unity Cloud Build Android : Error installing bvr

Hi, I have been trying to build my unity game using Unity Cloud build for Android.
Earlier to this I have been to able to build my application easily without any trouble.
But I dont know why its now giving an error that "Error installing bvr".
I searched on the forum if this question has been previously asked, but I could not find the solution.

This is the compact log which is being shown-

 1: ERROR:  Error installing bvr:
 2:     ERROR: Failed to build gem native extension.
 3: ERROR:  Error installing bvr:
 4:     ERROR: Failed to build gem native extension.
 5: ERROR:  Error installing bvr:
 6:     ERROR: Failed to build gem native extension.
 7: ERROR:  Error installing bvr:
 8:     ERROR: Failed to build gem native extension.
 9: ERROR:  Error installing bvr:
 10:     ERROR: Failed to build gem native extension.
 11: ERROR:  Error installing bvr:
 12:     ERROR: Failed to build gem native extension.
 13: ERROR: failed to update buildpacks!
 14: ERROR: pre-build step failed to setup environment
 15: Finished: FAILURE

This is my full log - https://drive.google.com/open?id=18a91UGyrdd88kv6OTlKzbMZBEqVarBNzymKR-LXrTe8

My previous commits on github was builded on cloud without any problem. I made only few minor variable changes in the next commit and this error starts to appear. I am able to build the application on my local system but not on cloud.
I dont know if its some technical bug from unity's side or am I doing some mistake while building. I would be really grateful if someone who faced the same issue could help me out. :-)