buildpack-function sample doesn't build

[imjasonh]

Expected Behavior

Running steps in https://github.com/knative/serving/tree/master/sample/buildpack-function#running produces a deployment that builds successfully and becomes ready.

Actual Behavior

The build fails. In the logs for the build-step-build init container in the build pod, logs indicate:

 Error: invalid version 

Failed to compile droplet: Failed to run all supply scripts: exit status 1
2018/07/02 01:56:06 Error: failed to build: exit status 223

There doesn't appear to be more information than this.

Steps to Reproduce the Problem

1. Follow instructions in https://github.com/knative/serving/tree/master/sample/buildpack-function#running

Additional Info

buildpack-app seems to build and become ready without any trouble. The source for buildpack-function is at https://github.com/projectriff-samples/node-square

This might be a good candidate to graduate to an automatic e2e test, so that future sample breakages are detected automatically.

[sclevine]

@scothis the error seems to be coming from the function invoker buildpack. Any thoughts?

[scothis]

I just tried the buildpack-function sample, it builds and runs clean for me. The function and buildpack have not changed in two months. My best guess is that there was a transient glitch with the feed n uses to install node.

[mattmoor]

the samples moved, so this is obsolete