interal/derrors, internal/worker: update error handling

Updates error handling to more accurately categorize the errors that
may happen when scanning with govulncheck.
Specifically, we now accurately catch instances where there is no go.mod
file, as well as isolate a common os/file error.

Change-Id: I06483d7a15c339653611f20cf288768f943cdf3f
Reviewed-on: https://go-review.googlesource.com/c/pkgsite-metrics/+/479976
Run-TryBot: Maceo Thompson <maceothompson@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Jonathan Amsterdam <jba@google.com>
2 files changed
tree: 971ea6844a874bdb6d26193d24c5bc7fe4fdd95c
  1. cmd/
  2. deploy/
  3. devtools/
  4. internal/
  5. terraform/
  6. .dockerignore
  7. .gitignore
  8. all_test.go
  9. checks.bash
  10. config.json.commented
  11. CONTRIBUTING.md
  12. go.mod
  13. go.sum
  14. LICENSE
  15. Makefile
  16. PATENTS
  17. README.md
  18. tools.go
README.md

pkgsite-metrics

This repository contains code that serves pkg.go.dev/metrics.

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