Better error messages for version mismatches #5678
Description
When attempting a rethinkdb restore
ReQL error during 'version check': Could not connect to localhost:28015. Error: No JSON object could be decoded
The 'JSON' message is confusing, it makes it seem like the backup is corrupt. The action cause is the version mismatch. A better error would be:
ReQL error during 'version check': rethinkdb version mismatch when connecting to localhost:28015.
Or better yet:
ReQL error during 'version check': rethinkdb version mismatch when connecting to localhost:28015. Dump is from rehtindb 2.3.0, this is version 2.2.5