======================================================================
ERROR: matplotlib.tests.test_backend_pgf.test_pathclip
----------------------------------------------------------------------
Traceback (most recent call last):
  File 
"/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-pac
kages/nose/case.py", line 197, in runTest
    self.test(*self.arg)
  File 
"/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-pac
kages/matplotlib/tests/test_backend_pgf.py", line 45, in backend_switcher
    result = func(*args, **kwargs)
  File 
"/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-pac
kages/matplotlib/tests/test_backend_pgf.py", line 145, in test_pathclip
    plt.savefig(os.path.join(result_dir, "pgf_pathclip.pdf"))
  File 
"/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-pac
kages/matplotlib/pyplot.py", line 561, in savefig
    return fig.savefig(*args, **kwargs)
  File 
"/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-pac
kages/matplotlib/figure.py", line 1410, in savefig
    self.canvas.print_figure(*args, **kwargs)
  File 
"/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-pac
kages/matplotlib/backend_bases.py", line 2220, in print_figure
    **kwargs)
  File 
"/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-pac
kages/matplotlib/backends/backend_pgf.py", line 864, in print_pdf
    self._print_pdf_to_fh(fh, *args, **kwargs)
  File 
"/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-pac
kages/matplotlib/backends/backend_pgf.py", line 822, in _print_pdf_to_fh
    self.print_pgf(fname_pgf, *args, **kwargs)
  File 
"/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-pac
kages/matplotlib/backends/backend_pgf.py", line 804, in print_pgf
    self._print_pgf_to_fh(fh, *args, **kwargs)
  File 
"/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-pac
kages/matplotlib/backends/backend_pgf.py", line 784, in _print_pgf_to_fh
    RendererPgf(self.figure, fh),
  File 
"/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-pac
kages/matplotlib/backends/backend_pgf.py", line 409, in __init__
    self.latexManager = LatexManagerFactory.get_latex_manager()
  File 
"/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-pac
kages/matplotlib/backends/backend_pgf.py", line 223, in get_latex_manager
    new_inst = LatexManager()
  File 
"/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-pac
kages/matplotlib/backends/backend_pgf.py", line 309, in __init__
    raise LatexError("LaTeX returned an error, probably missing font or 
error in preamble:\n%s" % stdout)
LatexError: LaTeX returned an error, probably missing font or error in 
preamble:
This is XeTeX, Version 3.1415926-2.4-0.9998 (TeX Live 2012)
 restricted \write18 enabled.
**entering extended mode
LaTeX2e <2011/06/27>
Babel <v3.8m> and hyphenation patterns for english, dumylang, 
nohyphenation, ge
rman-x-2012-05-30, ngerman-x-2012-05-30, afrikaans, ancientgreek, 
ibycus, arabi
c, armenian, basque, bulgarian, catalan, pinyin, coptic, croatian, 
czech, danis
h, dutch, ukenglish, usenglishmax, esperanto, estonian, ethiopic, farsi, 
finnis
h, french, friulan, galician, german, ngerman, swissgerman, monogreek, 
greek, h
ungarian, icelandic, assamese, bengali, gujarati, hindi, kannada, 
malayalam, ma
rathi, oriya, panjabi, tamil, telugu, indonesian, interlingua, irish, 
italian, 
kurmanji, latin, latvian, lithuanian, mongolian, mongolianlmc, bokmal, 
nynorsk,
 polish, portuguese, romanian, romansh, russian, sanskrit, serbian, 
serbianc, s
lovak, slovenian, spanish, swedish, turkish, turkmen, ukrainian, 
uppersorbian, 
welsh, loaded.

*(/usr/local/texlive/2012/texmf-dist/tex/latex/base/minimal.cls
Document Class: minimal 2001/05/25 Standard LaTeX minimal class
)
(Please type a command or say `\end')
*
*(/usr/local/texlive/2012/texmf-dist/tex/latex/fontspec/fontspec.sty
(/usr/local/texlive/2012/texmf-dist/tex/latex/l3kernel/expl3.sty
(/usr/local/texlive/2012/texmf-dist/tex/latex/l3kernel/l3names.sty
(/usr/local/texlive/2012/texmf-dist/tex/latex/l3kernel/l3bootstrap.sty))
(/usr/local/texlive/2012/texmf-dist/tex/latex/etex-pkg/etex.sty)
(/usr/local/texlive/2012/texmf-dist/tex/latex/graphics/color.sty
(/usr/local/texlive/2012/texmf-dist/tex/latex/latexconfig/color.cfg)
(/usr/local/texlive/2012/texmf-dist/tex/xelatex/xetex-def/xetex.def))
(/usr/local/texlive/2012/texmf-dist/tex/latex/graphics/graphics.sty
(/usr/local/texlive/2012/texmf-dist/tex/latex/graphics/trig.sty)
(/usr/local/texlive/2012/texmf-dist/tex/latex/latexconfig/graphics.cfg))
(/usr/local/texlive/2012/texmf-dist/tex/latex/l3kernel/l3basics.sty)
(/usr/local/texlive/2012/texmf-dist/tex/latex/l3kernel/l3expan.sty)
(/usr/local/texlive/2012/texmf-dist/tex/latex/l3kernel/l3tl.sty)
(/usr/local/texlive/2012/texmf-dist/tex/latex/l3kernel/l3seq.sty)
(/usr/local/texlive/2012/texmf-dist/tex/latex/l3kernel/l3int.sty)
(/usr/local/texlive/2012/texmf-dist/tex/latex/l3kernel/l3quark.sty)
(/usr/local/texlive/2012/texmf-dist/tex/latex/l3kernel/l3prg.sty)
(/usr/local/texlive/2012/texmf-dist/tex/latex/l3kernel/l3clist.sty)
(/usr/local/texlive/2012/texmf-dist/tex/latex/l3kernel/l3token.sty)
(/usr/local/texlive/2012/texmf-dist/tex/latex/l3kernel/l3prop.sty)
(/usr/local/texlive/2012/texmf-dist/tex/latex/l3kernel/l3msg.sty)
(/usr/local/texlive/2012/texmf-dist/tex/latex/l3kernel/l3file.sty)
(/usr/local/texlive/2012/texmf-dist/tex/latex/l3kernel/l3skip.sty)
(/usr/local/texlive/2012/texmf-dist/tex/latex/l3kernel/l3keys.sty)
(/usr/local/texlive/2012/texmf-dist/tex/latex/l3kernel/l3fp.sty)
(/usr/local/texlive/2012/texmf-dist/tex/latex/l3kernel/l3box.sty)
(/usr/local/texlive/2012/texmf-dist/tex/latex/l3kernel/l3coffins.sty)
(/usr/local/texlive/2012/texmf-dist/tex/latex/l3kernel/l3color.sty)
(/usr/local/texlive/2012/texmf-dist/tex/latex/l3kernel/l3luatex.sty))
(/usr/local/texlive/2012/texmf-dist/tex/latex/l3packages/xparse/xparse.st
y)
(/usr/local/texlive/2012/texmf-dist/tex/latex/fontspec/fontspec-patches.s
ty
(/usr/local/texlive/2012/texmf-dist/tex/latex/base/fixltx2e.sty)
*************************************************
* LaTeX warning: "xparse/redefine-command"
* 
* Redefining document command \oldstylenums with arg. spec. 'm' on line 
107.
*************************************************
) 
(/usr/local/texlive/2012/texmf-dist/tex/latex/fontspec/fontspec-xetex.sty
(/usr/local/texlive/2012/texmf-dist/tex/latex/base/fontenc.sty
(/usr/local/texlive/2012/texmf-dist/tex/latex/euenc/eu1enc.def)
(/usr/local/texlive/2012/texmf-dist/tex/latex/euenc/eu1lmr.fd))
(/usr/local/texlive/2012/texmf-dist/tex/xelatex/xunicode/xunicode.sty
(/usr/local/texlive/2012/texmf-dist/tex/latex/tipa/t3enc.def
(/usr/local/texlive/2012/texmf-dist/tex/latex/euenc/eu1lmss.fd))
(/usr/local/texlive/2012/texmf-dist/tex/latex/graphics/graphicx.sty
(/usr/local/texlive/2012/texmf-dist/tex/latex/graphics/keyval.sty)))
(/usr/local/texlive/2012/texmf-dist/tex/latex/fontspec/fontspec.cfg)))

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!
! fontspec error: "font-not-found"
! 
! The font "Bitstream Vera Serif" cannot be found.
! 
! See the fontspec documentation for further information.
! 
! For immediate help type H <return>.
!...............................................  

<*> \setmainfont{Bitstream Vera Serif}

No pages of output.
Transcript written on texput.log.


======================================================================
ERROR: matplotlib.tests.test_backend_pgf.test_mixedmode
----------------------------------------------------------------------
Traceback (most recent call last):
  File 
"/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-pac
kages/nose/case.py", line 197, in runTest
    self.test(*self.arg)
  File 
"/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-pac
kages/matplotlib/tests/test_backend_pgf.py", line 45, in backend_switcher
    result = func(*args, **kwargs)
  File 
"/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-pac
kages/matplotlib/tests/test_backend_pgf.py", line 157, in test_mixedmode
    compare_figure('pgf_mixedmode.pdf')
  File 
"/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-pac
kages/matplotlib/tests/test_backend_pgf.py", line 56, in compare_figure
    plt.savefig(actual)
  File 
"/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-pac
kages/matplotlib/pyplot.py", line 561, in savefig
    return fig.savefig(*args, **kwargs)
  File 
"/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-pac
kages/matplotlib/figure.py", line 1410, in savefig
    self.canvas.print_figure(*args, **kwargs)
  File 
"/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-pac
kages/matplotlib/backend_bases.py", line 2220, in print_figure
    **kwargs)
  File 
"/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-pac
kages/matplotlib/backends/backend_pgf.py", line 864, in print_pdf
    self._print_pdf_to_fh(fh, *args, **kwargs)
  File 
"/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-pac
kages/matplotlib/backends/backend_pgf.py", line 822, in _print_pdf_to_fh
    self.print_pgf(fname_pgf, *args, **kwargs)
  File 
"/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-pac
kages/matplotlib/backends/backend_pgf.py", line 804, in print_pgf
    self._print_pgf_to_fh(fh, *args, **kwargs)
  File 
"/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-pac
kages/matplotlib/backends/backend_pgf.py", line 784, in _print_pgf_to_fh
    RendererPgf(self.figure, fh),
  File 
"/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-pac
kages/matplotlib/backends/backend_pgf.py", line 409, in __init__
    self.latexManager = LatexManagerFactory.get_latex_manager()
  File 
"/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-pac
kages/matplotlib/backends/backend_pgf.py", line 223, in get_latex_manager
    new_inst = LatexManager()
  File 
"/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-pac
kages/matplotlib/backends/backend_pgf.py", line 309, in __init__
    raise LatexError("LaTeX returned an error, probably missing font or 
error in preamble:\n%s" % stdout)
LatexError: LaTeX returned an error, probably missing font or error in 
preamble:
This is XeTeX, Version 3.1415926-2.4-0.9998 (TeX Live 2012)
 restricted \write18 enabled.
**entering extended mode
LaTeX2e <2011/06/27>
Babel <v3.8m> and hyphenation patterns for english, dumylang, 
nohyphenation, ge
rman-x-2012-05-30, ngerman-x-2012-05-30, afrikaans, ancientgreek, 
ibycus, arabi
c, armenian, basque, bulgarian, catalan, pinyin, coptic, croatian, 
czech, danis
h, dutch, ukenglish, usenglishmax, esperanto, estonian, ethiopic, farsi, 
finnis
h, french, friulan, galician, german, ngerman, swissgerman, monogreek, 
greek, h
ungarian, icelandic, assamese, bengali, gujarati, hindi, kannada, 
malayalam, ma
rathi, oriya, panjabi, tamil, telugu, indonesian, interlingua, irish, 
italian, 
kurmanji, latin, latvian, lithuanian, mongolian, mongolianlmc, bokmal, 
nynorsk,
 polish, portuguese, romanian, romansh, russian, sanskrit, serbian, 
serbianc, s
lovak, slovenian, spanish, swedish, turkish, turkmen, ukrainian, 
uppersorbian, 
welsh, loaded.

*(/usr/local/texlive/2012/texmf-dist/tex/latex/base/minimal.cls
Document Class: minimal 2001/05/25 Standard LaTeX minimal class
)
(Please type a command or say `\end')
*
*(/usr/local/texlive/2012/texmf-dist/tex/latex/fontspec/fontspec.sty
(/usr/local/texlive/2012/texmf-dist/tex/latex/l3kernel/expl3.sty
(/usr/local/texlive/2012/texmf-dist/tex/latex/l3kernel/l3names.sty
(/usr/local/texlive/2012/texmf-dist/tex/latex/l3kernel/l3bootstrap.sty))
(/usr/local/texlive/2012/texmf-dist/tex/latex/etex-pkg/etex.sty)
(/usr/local/texlive/2012/texmf-dist/tex/latex/graphics/color.sty
(/usr/local/texlive/2012/texmf-dist/tex/latex/latexconfig/color.cfg)
(/usr/local/texlive/2012/texmf-dist/tex/xelatex/xetex-def/xetex.def))
(/usr/local/texlive/2012/texmf-dist/tex/latex/graphics/graphics.sty
(/usr/local/texlive/2012/texmf-dist/tex/latex/graphics/trig.sty)
(/usr/local/texlive/2012/texmf-dist/tex/latex/latexconfig/graphics.cfg))
(/usr/local/texlive/2012/texmf-dist/tex/latex/l3kernel/l3basics.sty)
(/usr/local/texlive/2012/texmf-dist/tex/latex/l3kernel/l3expan.sty)
(/usr/local/texlive/2012/texmf-dist/tex/latex/l3kernel/l3tl.sty)
(/usr/local/texlive/2012/texmf-dist/tex/latex/l3kernel/l3seq.sty)
(/usr/local/texlive/2012/texmf-dist/tex/latex/l3kernel/l3int.sty)
(/usr/local/texlive/2012/texmf-dist/tex/latex/l3kernel/l3quark.sty)
(/usr/local/texlive/2012/texmf-dist/tex/latex/l3kernel/l3prg.sty)
(/usr/local/texlive/2012/texmf-dist/tex/latex/l3kernel/l3clist.sty)
(/usr/local/texlive/2012/texmf-dist/tex/latex/l3kernel/l3token.sty)
(/usr/local/texlive/2012/texmf-dist/tex/latex/l3kernel/l3prop.sty)
(/usr/local/texlive/2012/texmf-dist/tex/latex/l3kernel/l3msg.sty)
(/usr/local/texlive/2012/texmf-dist/tex/latex/l3kernel/l3file.sty)
(/usr/local/texlive/2012/texmf-dist/tex/latex/l3kernel/l3skip.sty)
(/usr/local/texlive/2012/texmf-dist/tex/latex/l3kernel/l3keys.sty)
(/usr/local/texlive/2012/texmf-dist/tex/latex/l3kernel/l3fp.sty)
(/usr/local/texlive/2012/texmf-dist/tex/latex/l3kernel/l3box.sty)
(/usr/local/texlive/2012/texmf-dist/tex/latex/l3kernel/l3coffins.sty)
(/usr/local/texlive/2012/texmf-dist/tex/latex/l3kernel/l3color.sty)
(/usr/local/texlive/2012/texmf-dist/tex/latex/l3kernel/l3luatex.sty))
(/usr/local/texlive/2012/texmf-dist/tex/latex/l3packages/xparse/xparse.st
y)
(/usr/local/texlive/2012/texmf-dist/tex/latex/fontspec/fontspec-patches.s
ty
(/usr/local/texlive/2012/texmf-dist/tex/latex/base/fixltx2e.sty)
*************************************************
* LaTeX warning: "xparse/redefine-command"
* 
* Redefining document command \oldstylenums with arg. spec. 'm' on line 
107.
*************************************************
) 
(/usr/local/texlive/2012/texmf-dist/tex/latex/fontspec/fontspec-xetex.sty
(/usr/local/texlive/2012/texmf-dist/tex/latex/base/fontenc.sty
(/usr/local/texlive/2012/texmf-dist/tex/latex/euenc/eu1enc.def)
(/usr/local/texlive/2012/texmf-dist/tex/latex/euenc/eu1lmr.fd))
(/usr/local/texlive/2012/texmf-dist/tex/xelatex/xunicode/xunicode.sty
(/usr/local/texlive/2012/texmf-dist/tex/latex/tipa/t3enc.def
(/usr/local/texlive/2012/texmf-dist/tex/latex/euenc/eu1lmss.fd))
(/usr/local/texlive/2012/texmf-dist/tex/latex/graphics/graphicx.sty
(/usr/local/texlive/2012/texmf-dist/tex/latex/graphics/keyval.sty)))
(/usr/local/texlive/2012/texmf-dist/tex/latex/fontspec/fontspec.cfg)))

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!
! fontspec error: "font-not-found"
! 
! The font "Bitstream Vera Serif" cannot be found.
! 
! See the fontspec documentation for further information.
! 
! For immediate help type H <return>.
!...............................................  

<*> \setmainfont{Bitstream Vera Serif}

No pages of output.
Transcript written on texput.log.