Import failed with 500 in Github

[jaraco]

Running the migration failed when a 500 error occurred adding a comment to a merge request.

Should 500 errors be retried to avoid having to reset from scratch?

Pull request #78 (source branch 'fix_eggs' does not exist => cannot migrate pull request, creating an issue instead.
        Migrating pull request comments...
could not create GitHub issue comment!
RequestError [HttpError]: request to https://api.github.com/repos/python/importlib_metadata/issues/206/comments failed, reason: getaddrinfo ENOTFOUND api.github.com
    at /Users/jaraco/code/public/node-gitlab-2-github/node_modules/@octokit/request/dist-src/fetch-wrapper.js:88:15
    at runMicrotasks (<anonymous>)
    at processTicksAndRejections (internal/process/task_queues.js:93:5) {
  status: 500,
  headers: {},
  request: {
    method: 'POST',
    url: 'https://api.github.com/repos/python/importlib_metadata/issues/206/comments',
    headers: {
      accept: 'application/vnd.github.v3+json',
      'user-agent': 'octokit-rest.js/18.0.0 octokit-core.js/3.1.0 Node.js/14.13.1 (macOS Catalina; x64)',
      authorization: 'token [REDACTED]',
      'content-type': 'application/json; charset=utf-8'
    },
    body: '{"body":"In GitLab by [@asottile](https://gitlab.com/asottile) on Jul 2, 2019, 11:27\\n\\n@jaraco thoughts on how I can improve this PR?"}',
    request: { hook: [Function: bound bound register] }
  }
}
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! [email protected] start: `node node_modules/ts-node/dist/bin.js ./src/index.ts`
npm ERR! Exit status 1
npm ERR! 
npm ERR! Failed at the [email protected] start script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:
npm ERR!     /Users/jaraco/.npm/_logs/2020-10-22T15_56_58_678Z-debug.log

[jaraco]

After a second attempt, the migration failed again with a similar 500 error, but this time after Pull request #83, so the issue seems to be intermittent and spurious.

Is there any way to avoid avoid crashing at this point and instead somehow skip or retry?

[jaraco]

Here's the info from the debug log in the latest run, in case it's helpful:

0 info it worked if it ends with ok
1 verbose cli [
1 verbose cli   '/usr/local/Cellar/node/14.13.1_1/bin/node',
1 verbose cli   '/usr/local/bin/npm',
1 verbose cli   'run',
1 verbose cli   'start'
1 verbose cli ]
2 info using [email protected]
3 info using [email protected]
4 verbose run-script [ 'prestart', 'start', 'poststart' ]
5 info lifecycle [email protected]~prestart: [email protected]
6 info lifecycle [email protected]~start: [email protected]
7 verbose lifecycle [email protected]~start: unsafe-perm in lifecycle true
8 verbose lifecycle [email protected]~start: PATH: /usr/local/lib/node_modules/npm/node_modules/npm-lifecycle/node-gyp-bin:/Users/jaraco/code/public/node-gitlab-2-github/node_modules/.bin:/Users/jaraco/.local/bin:/usr/local/opt/[email protected]/bin:/Applications/Firefox.app/Contents/MacOS:/Library/Frameworks/Python.framework/Versions/3.9/bin:/Library/Frameworks/Python.framework/Versions/3.8/bin:/Library/Frameworks/Python.framework/Versions/3.7/bin:/Library/Frameworks/Python.framework/Versions/3.6/bin:/Library/Frameworks/Python.framework/Versions/3.5/bin:/Library/Frameworks/Python.framework/Versions/3.4/bin:/Users/jaraco/.local/homebrew/bin:/usr/local/heroku/bin:/Users/jaraco/Dropbox/bin/mac:/opt/cisco/anyconnect/bin:/Users/jaraco/Dropbox/bin/scripts:/Applications/Sublime Merge.app/Contents/SharedSupport/bin:/Applications/Sublime Text.app/Contents/SharedSupport/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/Applications/VMware Fusion.app/Contents/Public:/Library/Frameworks/Mono.framework/Versions/Current/Commands:/Applications/Wireshark.app/Contents/MacOS:/Users/jaraco/.local/bin
9 verbose lifecycle [email protected]~start: CWD: /Users/jaraco/code/public/node-gitlab-2-github
10 silly lifecycle [email protected]~start: Args: [ '-c', 'node node_modules/ts-node/dist/bin.js ./src/index.ts' ]
11 silly lifecycle [email protected]~start: Returned: code: 1  signal: null
12 info lifecycle [email protected]~start: Failed to exec start script
13 verbose stack Error: [email protected] start: `node node_modules/ts-node/dist/bin.js ./src/index.ts`
13 verbose stack Exit status 1
13 verbose stack     at EventEmitter.<anonymous> (/usr/local/lib/node_modules/npm/node_modules/npm-lifecycle/index.js:332:16)
13 verbose stack     at EventEmitter.emit (events.js:314:20)
13 verbose stack     at ChildProcess.<anonymous> (/usr/local/lib/node_modules/npm/node_modules/npm-lifecycle/lib/spawn.js:55:14)
13 verbose stack     at ChildProcess.emit (events.js:314:20)
13 verbose stack     at maybeClose (internal/child_process.js:1047:16)
13 verbose stack     at Process.ChildProcess._handle.onexit (internal/child_process.js:287:5)
14 verbose pkgid [email protected]
15 verbose cwd /Users/jaraco/code/public/node-gitlab-2-github
16 verbose Darwin 19.6.0
17 verbose argv "/usr/local/Cellar/node/14.13.1_1/bin/node" "/usr/local/bin/npm" "run" "start"
18 verbose node v14.13.1
19 verbose npm  v6.14.8
20 error code ELIFECYCLE
21 error errno 1
22 error [email protected] start: `node node_modules/ts-node/dist/bin.js ./src/index.ts`
22 error Exit status 1
23 error Failed at the [email protected] start script.
23 error This is probably not a problem with npm. There is likely additional logging output above.
24 verbose exit [ 1, true ]

[jaraco]

Wait a minute. I see 500 but I also see ENOTFOUND api.github.com. So maybe the 500 response is a lie and in fact the issue is that sometimes the name lookup fails.