Strange error reporting

[AloisMahdal]

After subscribing to RHSM and attempting leapp upgrade, the upgrade fails and reports errors. However:

• the errors are reported to STDOUT, not STDERR along with other messages
• there is some (possibly) stray output
• the format of error messages is a bit inconsistent with the rest (eg. INFO, WARNING)
  • fractional part of second has more digits
  • the severity token has brackets, ie. [ERROR] instead of ERROR.

This makes log parsing a bit more work and/or less reliable.

---

command line:

leapp upgrade --debug --whitelist-experimental patchdnf

stdout:

1 local certificate has been deleted.
All local data refreshed


============================================================
                        ERRORS
============================================================

2018-11-07 17:08:46.880315 [ERROR] Actor: prepare_upgrade_transaction Message: Error: Cannot find even basic RHEL repositories.: It is required to have RHEL repository on the system provided by the subscription-manager. Possibly you are missing a valid SKU for the target system.
2018-11-07 17:08:48.122648 [ERROR] Actor: prepare_upgrade_transaction Message: Error: Cannot find even basic RHEL repositories.: It is required to have RHEL repository on the system provided by the subscription-manager. Possibly you are missing a valid SKU for the target system.

============================================================
                     END OF ERRORS
============================================================

stderr:

2018-11-07 18:08:04.505 INFO     PID: 16687 leapp: Logging has been initialized
2018-11-07 18:08:05.32  INFO     PID: 16687 leapp.repository.common: A new repository 'common' is initialized at /etc/leapp/repos.d/common
2018-11-07 18:08:05.441 INFO     PID: 16687 leapp.repository.containerization: A new repository 'containerization' is initialized at /etc/leapp/repos.d/containerization
2018-11-07 18:08:05.581 INFO     PID: 16687 leapp.repository.offline-upgrade: A new repository 'offline-upgrade' is initialized at /etc/leapp/repos.d/offline-upgrade
2018-11-07 18:08:05.765 INFO     PID: 16687 leapp.repository.upgrade: A new repository 'upgrade' is initialized at /etc/leapp/repos.d/upgrade
2018-11-07 18:08:05.976 INFO     PID: 16687 leapp.repository.oamg-qe: A new repository 'oamg-qe' is initialized at /etc/leapp/repos.d/oamg-qe
2018-11-07 18:08:07.45  WARNING  PID: 16731 leapp.linter: Actor <class 'actor.PrepareUpgradeTransaction'> field produces should be a tuple of Models
2018-11-07 18:08:07.575 INFO     PID: 16687 leapp.workflow: Starting workflow execution: InplaceUpgrade - ID: 1931867b-c312-4f6a-8fee-92eae7b15439
[...]

[tcerna]

Hi, this problem is still current. Error in preupgrade_upgrade_transaction has appeared and exit code of leapp is 0. Standard exit code is 0 and any number from 1 to 255 for anything else. I would expect other exit status instead of 0 in case of error.

This caused in our automation, that it evaluates leapp processing as successful and indicates reboot for processing the upgrade.