This is pdfTeX, Version 3.1415926-2.5-1.40.14 (TeX Live 2013/Debian) (format=pdflatex 2015.4.29)  12 MAR 2016 11:28
entering extended mode
 restricted \write18 enabled.
 %&-line parsing enabled.
**talk.tex

! Emergency stop.
<*> talk.tex
            
End of file on the terminal!

 
Here is how much of TeX's memory you used:
 3 strings out of 495032
 105 string characters out of 6181718
 45944 words of memory out of 5000000
 3315 multiletter control sequences out of 15000+600000
 3640 words of font info for 14 fonts, out of 8000000 for 9000
 14 hyphenation exceptions out of 8191
 0i,0n,0p,11b,6s stack positions out of 5000i,500n,10000p,200000b,80000s
!  ==> Fatal error occurred, no output PDF file produced!