square hole log

This is pdfTeX, Version 3.14159265-2.6-1.40.16 (TeX Live 2015/Debian) (preloaded format=pdflatex 2017.8.23)  12 NOV 2017 11:05
entering extended mode
 restricted \write18 enabled.
 %&-line parsing enabled.
**atest.tex
(./atest.tex
LaTeX2e <2016/02/01>
Babel <3.9q> and hyphenation patterns for 81 language(s) loaded.
(/usr/share/texlive/texmf-dist/tex/latex/base/minimal.cls
Document Class: minimal 2001/05/25 Standard LaTeX minimal class
) (./atest.aux)
\openout1 = `atest.aux'.

LaTeX Font Info:    Checking defaults for OML/cmm/m/it on input line 3.
LaTeX Font Info:    ... okay on input line 3.
LaTeX Font Info:    Checking defaults for T1/cmr/m/n on input line 3.
LaTeX Font Info:    ... okay on input line 3.
LaTeX Font Info:    Checking defaults for OT1/cmr/m/n on input line 3.
LaTeX Font Info:    ... okay on input line 3.
LaTeX Font Info:    Checking defaults for OMS/cmsy/m/n on input line 3.
LaTeX Font Info:    ... okay on input line 3.
LaTeX Font Info:    Checking defaults for OMX/cmex/m/n on input line 3.
LaTeX Font Info:    ... okay on input line 3.
LaTeX Font Info:    Checking defaults for U/cmr/m/n on input line 3.
LaTeX Font Info:    ... okay on input line 3.
LaTeX Font Info:    External font `cmex10' loaded for size
(Font)              <7> on input line 4.
LaTeX Font Info:    External font `cmex10' loaded for size
(Font)              <5> on input line 4.
 [1{/var/lib/texmf/fonts/map/pdftex/updmap/pdftex.map}]
(./atest.aux) )
Here is how much of TeX's memory you used:
 21 strings out of 493029
 386 string characters out of 6136234
 53072 words of memory out of 5000000
 3647 multiletter control sequences out of 15000+600000
 3640 words of font info for 14 fonts, out of 8000000 for 9000
 1141 hyphenation exceptions out of 8191
 18i,4n,12p,109b,92s stack positions out of 5000i,500n,10000p,200000b,80000s
</usr/share/texlive/texmf-dist/fonts/type1/public/amsfonts/cm/cm
ex10.pfb></usr/share/texlive/texmf-dist/fonts/type1/public/amsfonts/cm/cmmi10.p
fb></usr/share/texlive/texmf-dist/fonts/type1/public/amsfonts/cm/cmmi7.pfb></us
r/share/texlive/texmf-dist/fonts/type1/public/amsfonts/cm/cmr10.pfb></usr/share
/texlive/texmf-dist/fonts/type1/public/amsfonts/cm/cmsy10.pfb>
Output written on atest.pdf (1 page, 38655 bytes).
PDF statistics:
 28 PDF objects out of 1000 (max. 8388607)
 19 compressed objects within 1 object stream
 0 named destinations out of 1000 (max. 500000)
 1 words of extra memory for PDF output out of 10000 (max. 10000000)