Bug in build-project-graph.ts leads to broken CI builds

[gneu77]

Current Behavior

nx postinstall script terminates with code 1 in CI build, due to a bug in build-project-graph.ts

Expected Behavior

installing nx on CI build should be possible

Steps to Reproduce

setup project with nx and setup a CI build where the number of available workers is higher than the number of bins resulting for the project

Detailed analysis

On the CI-build, https://github.com/nrwl/nx/blob/master/packages/nx/src/project-graph/build-project-graph.ts passed undefined to the worker, if numberOfExpectedResponses < numberOfWorkers (in our case 102 < 255).

Workaround

Limit the number of workers in the CI build, e.g.: env NX_PROJECT_GRAPH_MAX_WORKERS=20 npm ci

[github-actions]

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