# do-release-upgrade
Checking for a new Ubuntu release
Get:1 Upgrade tool signature [198 B]
Get:2 Upgrade tool [1230 kB]
Fetched 1230 kB in 0s (0 B/s)
authenticate 'wily.tar.gz' against 'wily.tar.gz.gpg'
extracting 'wily.tar.gz'
Zwischenspeicher wird gelesen
Ein schwerwiegender Fehler ist aufgetreten
Error in sys.excepthook:
Traceback (most recent call last):
File "/tmp/ubuntu-release-upgrader-d3h4k3i1/DistUpgrade/DistUpgradeViewText.py", line 142, in _handleException
"\n".join(lines))
File "/tmp/ubuntu-release-upgrader-d3h4k3i1/DistUpgrade/DistUpgradeViewText.py", line 177, in error
print(twrap(msg))
UnicodeEncodeError: 'ascii' codec can't encode character '\xfc' in position 45: ordinal not in range(128)
Original exception was:
Traceback (most recent call last):
File "/tmp/ubuntu-release-upgrader-d3h4k3i1/wily", line 8, in <module>
sys.exit(main())
File "/tmp/ubuntu-release-upgrader-d3h4k3i1/DistUpgrade/DistUpgradeMain.py", line 240, in main
if app.run():
File "/tmp/ubuntu-release-upgrader-d3h4k3i1/DistUpgrade/DistUpgradeController.py", line 1837, in run
return self.fullUpgrade()
File "/tmp/ubuntu-release-upgrader-d3h4k3i1/DistUpgrade/DistUpgradeController.py", line 1652, in fullUpgrade
self._view.updateStatus(_("Checking package manager"))
File "/tmp/ubuntu-release-upgrader-d3h4k3i1/DistUpgrade/DistUpgradeViewText.py", line 156, in updateStatus
print(msg)
UnicodeEncodeError: 'ascii' codec can't encode character '\xfc' in position 21: ordinal not in range(128)
如果 LANG 设置为 de_DE.UTF-8，就会发生这种情况。
如果在升级之前设置了 export LANG=en，则不会发生这种情况。
为什么会发生这种情况？