This exception is new
```name=arc which --trace
COMMIT RANGE
If you run 'arc diff', changes between the commit:
ee2af90455256a30 First stab at day view
[2015-05-17 12:41:34] ERROR 2: str_repeat() expects parameter 2 to be long, string given at [/home/avive/devtools/libphutil/src/console/format.php:162]
arcanist(head=master, ref.master=f9cefb7e2d9d, custom=1), phabricator(head=symbols, ref.master=51facbabba91, ref.symbols=694018d12c69), phutil(head=master, ref.master=bd087f55be93)
#0 str_repeat(string, string) called at [<phutil>/src/console/format.php:162]
#1 phutil_console_wrap(string, string, string, PhutilCommandString, string) called at [<arcanist>/src/workflow/ArcanistWhichWorkflow.php:169]
#2 ArcanistWhichWorkflow::run() called at [<arcanist>/scripts/arcanist.php:387]
%s
%s
$ %s
%s
694018d12c69d39b pht, rm
```
This started somewhere between
```$ arc version
arcanist 73aca1f9f0b1984707b43579b2275d3179217875 (7 May 2015)
libphutil cb8cdccb1a50190fd42546878fe29ccb7e593876 (5 May 2015)
```
and
```$ arc version
arcanist f9cefb7e2d9d8e0d898b1570870de6df1360592c (15 May 2015)
libphutil bd087f55be937522bf752472406c6341003f50a4 (16 May 2015)
```