This is XeTeX, Version 3.141592653-2.6-0.999993 (TeX Live 2021) (preloaded format=xelatex 2021.11.12)  21 JUN 2022 12:01
entering extended mode
 restricted \write18 enabled.
 %&-line parsing enabled.
**./test.tex
(./test.tex
LaTeX2e <2021-06-01> patch level 1
L3 programming layer <2021-10-18>
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File: size12.clo 2021/02/12 v1.4n Standard LaTeX file (size option)
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Package: keyval 2014/10/28 v1.15 key=value parser (DPC)
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Package: ifvtex 2019/10/25 v1.7 ifvtex legacy package. Use iftex instead.

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Package: iftex 2020/03/06 v1.0d TeX engine tests
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Package: babel 2021/11/08 3.66 The Babel package
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\l@unhyphenated=\language87

(/usr/local/texlive/2021/texmf-dist/tex/generic/babel/xebabel.def
(/usr/local/texlive/2021/texmf-dist/tex/generic/babel/txtbabel.def))
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Language: english 2017/06/06 v3.3r English support from the babel system
Package babel Info: Hyphen rules for 'canadian' set to \l@english
(babel)             (\language0). Reported on input line 102.
Package babel Info: Hyphen rules for 'australian' set to \l@ukenglish
(babel)             (\language21). Reported on input line 105.
Package babel Info: Hyphen rules for 'newzealand' set to \l@ukenglish
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Package: ccfonts 2020/03/25 v1.2 (WaS)
LaTeX Font Info:    Redeclaring symbol font `operators' on input line 80.
LaTeX Font Info:    Overwriting symbol font `operators' in version `normal'
(Font)                  OT1/cmr/m/n --> OT1/ccr/m/n on input line 80.
LaTeX Font Info:    Overwriting symbol font `operators' in version `bold'
(Font)                  OT1/cmr/bx/n --> OT1/ccr/m/n on input line 80.
LaTeX Font Info:    Redeclaring symbol font `letters' on input line 81.
LaTeX Font Info:    Overwriting symbol font `letters' in version `normal'
(Font)                  OML/cmm/m/it --> OML/ccm/m/it on input line 81.
LaTeX Font Info:    Overwriting symbol font `letters' in version `bold'
(Font)                  OML/cmm/b/it --> OML/ccm/m/it on input line 81.
LaTeX Font Info:    Redeclaring symbol font `symbols' on input line 82.
LaTeX Font Info:    Overwriting symbol font `symbols' in version `normal'
(Font)                  OMS/cmsy/m/n --> OMS/ccsy/m/n on input line 82.
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(Font)                  OMS/cmsy/b/n --> OMS/ccsy/m/n on input line 82.
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LaTeX Font Info:    Overwriting symbol font `largesymbols' in version `normal'
(Font)                  OMX/cmex/m/n --> OMX/ccex/m/n on input line 83.
LaTeX Font Info:    Overwriting symbol font `largesymbols' in version `bold'
(Font)                  OMX/cmex/m/n --> OMX/ccex/m/n on input line 83.
LaTeX Font Info:    Redeclaring math alphabet \mathbf on input line 84.
LaTeX Font Info:    Overwriting math alphabet `\mathbf' in version `normal'
(Font)                  OT1/cmr/bx/n --> OT1/ccr/bx/n on input line 84.
LaTeX Font Info:    Overwriting math alphabet `\mathbf' in version `bold'
(Font)                  OT1/cmr/bx/n --> OT1/ccr/bx/n on input line 84.
LaTeX Font Info:    Redeclaring math alphabet \mathit on input line 85.
LaTeX Font Info:    Overwriting math alphabet `\mathit' in version `normal'
(Font)                  OT1/cmr/m/it --> OT1/ccr/m/it on input line 85.
LaTeX Font Info:    Overwriting math alphabet `\mathit' in version `bold'
(Font)                  OT1/cmr/bx/it --> OT1/ccr/m/it on input line 85.
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Package: expl3 2021-10-18 L3 programming layer (loader)

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File: l3backend-xetex.def 2021-10-18 L3 backend support: XeTeX

(|extractbb --version)
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Package: fontspec 2020/02/21 v2.7i Font selection for XeLaTeX and LuaLaTeX

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Package: fontspec-xetex 2020/02/21 v2.7i Font selection for XeLaTeX and LuaLaTe
X
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Package: fontenc 2021/04/29 v2.0v Standard LaTeX package
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(/usr/local/texlive/2021/texmf-dist/tex/latex/fontspec/fontspec.cfg)))

! Package fontspec Error: The font "CMU Concrete" cannot be found.

For immediate help type H <return>.
 ...

l.7 \setsansfont
                {CMU Sans Serif}
? X

Here is how much of TeX's memory you used:
 4200 strings out of 476473
 115257 string characters out of 5816481
 480206 words of memory out of 5000000
 24683 multiletter control sequences out of 15000+600000
 403446 words of font info for 29 fonts, out of 8000000 for 9000
 1348 hyphenation exceptions out of 8191
 73i,0n,81p,254b,116s stack positions out of 5000i,500n,10000p,200000b,80000s
No pages of output.