This is METAFONT, WAITS Version -60.0 (INIMF)  24 MAY 1984 23:39
**test
(TEST.MF[MF,DEK]
{tracingedges:=1}
{tracingtitles:=1}
{tracingequations:=1}
{tracingspecs:=1}
{tracingpens:=1}
{tracingchoices:=1}
{tracingstats:=2}
{tracingonline:=1}

{tracingoutput:=1}
{tracingmacros:=3}
{xyzzy:=1}
{vardef}
{outer}
{vardef}
! This variable already starts with a macro.
p.2,l.9 vardef a.b=
                   second end
? 
Runaway definition?
second
! Forbidden token found while scanning the definition of bad vardef.
<inserted text> 
                enddef
<to be read again> 
                   end
p.2,l.9 vardef a.b=second end
                             
? h
I suspect you have forgotten an `enddef',
causing me to read past where you wanted me to stop.
I'll try to recover; but if the error is serious,
you'd better type `E' or `X' now and fix your file.

? 
 
Here is how much of METAFONT's memory you used:
 3 strings out of 567
 21 string characters out of 12161
 51&46 words of memory out of 13000&17001
 191 symbolic tokens out of 2100
 2i,31n,0p,80b stack positions out of 30i,50n,30p,500b