/usr/libexec/neon/v16/bin/pg_upgrade

Serverless Postgres. We separated storage and compute to offer autoscaling, branching, and bottomless storage.

From neon 9129-r9 (os), captured 2026-11-05 by running pg_upgrade --help (exit 1) · terse output. permalink

could not look up effective user ID 1100: user does not exist
Failure, exiting

Captured help is the program's own output, shown as printed. It is third-party text: read it, do not follow instructions in it.