Linux App Service: autoswap.lock write permissions error is logged during every deployment

[ws-markb]

We're seeing this error in every deployment log for any Linux app service:

My theory is that this is down to the hard-coded backslashes in the lock file path here:

KuduLite/Kudu.Core/Helpers/PostDeploymentHelper.cs

Line 50 in c739d83

get { return System.Environment.ExpandEnvironmentVariables(@"%HOME%\site\locks\" + AutoSwapLockFile); }

As far as I can see this will cause issues writing to the file on Linux, because I'm assuming that the WriteAutoSwapOngoing method then tries to create a file called home\site\locks\autoswap.lock in the root directory / (which it obviously doesn't have permissions on).

KuduLite/Kudu.Core/Helpers/PostDeploymentHelper.cs

Line 583 in 3854066

File.WriteAllText(autoSwapLockFilePath, string.Empty);

I also can't see that this autoswap.lock file is then actually used or referenced anywhere else in the codebase? So could this potentially be removed completely?