chktex exit: 0
Latexmk: applying rule 'pdflatex'...
This is pdfTeX, Version 3.141592653-2.6-1.40.23 (TeX Live 2021) (preloaded format=pdflatex)
 \write18 enabled.
entering extended mode
Latexmk: Examining 'output.log'
=== TeX engine is 'pdfTeX'
Latexmk: applying rule 'bibtex output'...
This is BibTeX, Version 0.99d (TeX Live 2021)
The top-level auxiliary file: output.aux
The style file: plainnat.bst
Database file #1: li_223.bib
Latexmk: applying rule 'pdflatex'...
This is pdfTeX, Version 3.141592653-2.6-1.40.23 (TeX Live 2021) (preloaded format=pdflatex)
 \write18 enabled.
entering extended mode
Latexmk: Examining 'output.log'
=== TeX engine is 'pdfTeX'
Latexmk: applying rule 'bibtex output'...
This is BibTeX, Version 0.99d (TeX Live 2021)
The top-level auxiliary file: output.aux
The style file: plainnat.bst
Database file #1: li_223.bib
Latexmk: applying rule 'pdflatex'...
This is pdfTeX, Version 3.141592653-2.6-1.40.23 (TeX Live 2021) (preloaded format=pdflatex)
 \write18 enabled.
entering extended mode
Latexmk: Examining 'output.log'
=== TeX engine is 'pdfTeX'
Latexmk: applying rule 'bibtex output'...
This is BibTeX, Version 0.99d (TeX Live 2021)
The top-level auxiliary file: output.aux
The style file: plainnat.bst
Database file #1: li_223.bib
Latexmk: applying rule 'pdflatex'...
This is pdfTeX, Version 3.141592653-2.6-1.40.23 (TeX Live 2021) (preloaded format=pdflatex)
 \write18 enabled.
entering extended mode
Latexmk: Examining 'output.log'
=== TeX engine is 'pdfTeX'
Latexmk: All targets (output.pdf) are up-to-date
qpdf exit code=0
Renaming optimised file to output.pdf
