cache.WARNING: Failed to save key #20450
Description
I started to rebase an old project with Symfony 3.2
As I ran doctrine:schema:update I encountered a cache error (multiple times):
[2016-11-08 15:27:11] cache.WARNING: Failed to save key "{key}" ({type})
{"key":"%5B%5BC%5DZogs%5CUserBundle%5CEntity%5CSettingsRepository%5D%5B1%5D",
"type":"integer","exception":null}
The dev.log give more details:
[2016-11-08 15:27:11] php.DEBUG: Warning: mkdir(): File exists {"exception":"[object] (Symfony\\Component\\Debug\\Exception\\SilencedErrorContext: {\"severity\":2,\"file\":\"/var/www/civc/civc-base/vendor/symfony/symfony/src/Symfony/Component/Cache/Adapter/FilesystemAdapterTrait.php\",\"line\":105})"} []
[2016-11-08 15:27:11] php.DEBUG: Warning: rename(/var/www/civc/civc-base/var/cache/de_/pools/dQ3+Vffy0u/5821eec6de5390.22689761,/var/www/civc/civc-base/var/cache/de_/pools/dQ3+Vffy0u/p/Y/flcLVvpgTim+ruuEn1+g): No such file or directory {"exception":"[object] (Symfony\\Component\\Debug\\Exception\\SilencedErrorContext: {\"severity\":2,\"file\":\"/var/www/civc/civc-base/vendor/symfony/symfony/src/Symfony/Component/Cache/Adapter/FilesystemAdapterTrait.php\",\"line\":91})"} []
[2016-11-08 15:27:11] php.DEBUG: Warning: opcache_compile_file(/var/www/civc/civc-base/var/cache/de_/pools/dQ3+Vffy0u/p/Y/flcLVvpgTim+ruuEn1+g): failed to open stream: No such file or directory {"exception":"[object] (Symfony\\Component\\Debug\\Exception\\SilencedErrorContext: {\"severity\":2,\"file\":\"/var/www/civc/civc-base/vendor/symfony/symfony/src/Symfony/Component/Cache/Adapter/PhpFilesAdapter.php\",\"line\":118})"} []
[2016-11-08 15:27:11] php.DEBUG: Warning: opcache_compile_file(): Failed opening '/var/www/civc/civc-base/var/cache/de_/pools/dQ3+Vffy0u/p/Y/flcLVvpgTim+ruuEn1+g' for inclusion (include_path='.:/usr/share/php') {"exception":"[object] (Symfony\\Component\\Debug\\Exception\\SilencedErrorContext: {\"severity\":2,\"file\":\"/var/www/civc/civc-base/vendor/symfony/symfony/src/Symfony/Component/Cache/Adapter/PhpFilesAdapter.php\",\"line\":118})"} []
[2016-11-08 15:27:11] cache.WARNING: Failed to save key "{key}" ({type}) {"key":"%5B%5BC%5DZogs%5CUserBundle%5CEntity%5CSettingsRepository%5D%5B1%5D","type":"integer","exception":null}
My OpCache is enable and I checked my dev environnement for possible conflict, but everything looks normal... So I am not sure what happens, but it seems to be related to the FilesystemAdapterTrait.php