Change:
// todo: can be specialized when update service is moved to CodeErrors #[error("Could not check for update: {0}")] UpdateCheckFailed(String), <ins> #[error("Could not read connection token file: {0}")] CouldNotReadConnectionTokenFile(std::io::Error), </ins> #[error("Could not write connection token file: {0}")] CouldNotCreateConnectionTokenFile(std::io::Error), #[error("A tunnel with the name {0} exists and is in-use. Please pick a different name or stop the existing tunnel.")]

Discussion:
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If this isn't intended to be used, I would think it should be removed from the options provided for the CLI command instead of being non-functional.
Hi Are you able to verify if this fix works? You can do so by getting the latest pre-release version of the remote-ssh extension and trying these same steps there. We want to make sure we get this bug verified, and the fix is correct, before we release this to stable. Thanks!
I checked the code-insiders build I downloaded today (1.92.0). It does not appear to have a fix for this issue and the current insiders build has the same behavior as before. I also took a look at the that closed this issue and although it is titled as relevant to this issue, it contains a that appears like it would perhaps be relevant to the remote-ssh extension but does not have any relation to this issue with connection tokens and the CLI that I can tell. I think perhaps that PR/commit got mixed up from different issue than this one.
Reopening with verification found based on authors report
huh, not sure what happened to the branch in that PR. I'll resubmit the change.