math stuff

[Math] New cache key: *!*!*!*!*!*!math=0
[Math] start rendering $\begin{align}
v = u + at
\end{align}$ in mode 0
[Math] TeX: getHashPath, hash is: 5718cd19896c88f581b09b41c7295da4, path is: mwstore://math-backend/math-render/5/7/1
FileBackendStore::getFileStat: File mwstore://math-backend/math-render/5/7/1/5718cd19896c88f581b09b41c7295da4.png does not exist.
[Math] TeX: /usr/bin/texvc '/tmp' '/tmp' '\begin{align}
v = u + at
\end{align}' 'UTF-8' 'transparent'
[texvc] Executing '/usr/bin/texvc '/tmp' '/tmp' '\begin{align}
v = u + at
\end{align}' 'UTF-8' 'transparent''.
wfShellExec: /bin/bash '/var/www/MediaWiki/Git/core/includes/limit.sh' '/usr/bin/texvc '\''/tmp'\'' '\''/tmp'\'' '\''\begin{align}
v = u + at
\end{align}'\'' '\''UTF-8'\'' '\''transparent'\''' 'MW_INCLUDE_STDERR=;MW_CPU_LIMIT=180; MW_CGROUP='\'''\''; MW_MEM_LIMIT=307200; MW_FILE_SIZE_LIMIT=102400; MW_WALL_CLOCK_LIMIT=180; MW_USE_LOG_PIPE=yes'
[Math] TeX output:
 +5718cd19896c88f581b09b41c7295da4-
---
Tidy error detected!
[Math] New cache key: *!*!*!*!*!*!math=0
Saved in parser cache with key mediawiki_test_git:pcache:idhash:766-0!*!*!*!*!*!*!math=0 and timestamp 20140209205451