Error(s) in re-building vignettes:
--- re-building ‘ipums-bigdata.Rmd’ using rmarkdown
Registered S3 methods overwritten by 'ipumsr':
  method                                 from 
  format.pillar_shaft_haven_labelled_chr haven
  format.pillar_shaft_haven_labelled_num haven
  pillar_shaft.haven_labelled            haven

Attaching package: 'dplyr'

The following objects are masked from 'package:stats':

    filter, lag

The following objects are masked from 'package:base':

    intersect, setdiff, setequal, union

Loading required namespace: biglm
Loading required namespace: DBI
Loading required namespace: RSQLite
Loading required namespace: dbplyr
dyld: lazy symbol binding failed: Symbol not found: ____chkstk_darwin
  Referenced from: /usr/local/bin/pandoc (which was built for Mac OS X 10.15)
  Expected in: /usr/lib/libSystem.B.dylib

dyld: Symbol not found: ____chkstk_darwin
  Referenced from: /usr/local/bin/pandoc (which was built for Mac OS X 10.15)
  Expected in: /usr/lib/libSystem.B.dylib

Error: processing vignette 'ipums-bigdata.Rmd' failed with diagnostics:
pandoc document conversion failed with error 6
--- failed re-building ‘ipums-bigdata.Rmd’

--- re-building ‘ipums-cps.Rmd’ using rmarkdown
dyld: lazy symbol binding failed: Symbol not found: ____chkstk_darwin
  Referenced from: /usr/local/bin/pandoc (which was built for Mac OS X 10.15)
  Expected in: /usr/lib/libSystem.B.dylib

dyld: Symbol not found: ____chkstk_darwin
  Referenced from: /usr/local/bin/pandoc (which was built for Mac OS X 10.15)
  Expected in: /usr/lib/libSystem.B.dylib

Error: processing vignette 'ipums-cps.Rmd' failed with diagnostics:
pandoc document conversion failed with error 6
--- failed re-building ‘ipums-cps.Rmd’

--- re-building ‘ipums-geography.Rmd’ using rmarkdown
dyld: lazy symbol binding failed: Symbol not found: ____chkstk_darwin
  Referenced from: /usr/local/bin/pandoc (which was built for Mac OS X 10.15)
  Expected in: /usr/lib/libSystem.B.dylib

dyld: Symbol not found: ____chkstk_darwin
  Referenced from: /usr/local/bin/pandoc (which was built for Mac OS X 10.15)
  Expected in: /usr/lib/libSystem.B.dylib

Error: processing vignette 'ipums-geography.Rmd' failed with diagnostics:
pandoc document conversion failed with error 6
--- failed re-building ‘ipums-geography.Rmd’

--- re-building ‘ipums-nhgis.Rmd’ using rmarkdown
dyld: lazy symbol binding failed: Symbol not found: ____chkstk_darwin
  Referenced from: /usr/local/bin/pandoc (which was built for Mac OS X 10.15)
  Expected in: /usr/lib/libSystem.B.dylib

dyld: Symbol not found: ____chkstk_darwin
  Referenced from: /usr/local/bin/pandoc (which was built for Mac OS X 10.15)
  Expected in: /usr/lib/libSystem.B.dylib

Error: processing vignette 'ipums-nhgis.Rmd' failed with diagnostics:
pandoc document conversion failed with error 6
--- failed re-building ‘ipums-nhgis.Rmd’

--- re-building ‘ipums-terra.Rmd’ using rmarkdown
dyld: lazy symbol binding failed: Symbol not found: ____chkstk_darwin
  Referenced from: /usr/local/bin/pandoc (which was built for Mac OS X 10.15)
  Expected in: /usr/lib/libSystem.B.dylib

dyld: Symbol not found: ____chkstk_darwin
  Referenced from: /usr/local/bin/pandoc (which was built for Mac OS X 10.15)
  Expected in: /usr/lib/libSystem.B.dylib

Error: processing vignette 'ipums-terra.Rmd' failed with diagnostics:
pandoc document conversion failed with error 6
--- failed re-building ‘ipums-terra.Rmd’

--- re-building ‘ipums.Rmd’ using rmarkdown
dyld: lazy symbol binding failed: Symbol not found: ____chkstk_darwin
  Referenced from: /usr/local/bin/pandoc (which was built for Mac OS X 10.15)
  Expected in: /usr/lib/libSystem.B.dylib

dyld: Symbol not found: ____chkstk_darwin
  Referenced from: /usr/local/bin/pandoc (which was built for Mac OS X 10.15)
  Expected in: /usr/lib/libSystem.B.dylib

Error: processing vignette 'ipums.Rmd' failed with diagnostics:
pandoc document conversion failed with error 6
--- failed re-building ‘ipums.Rmd’

--- re-building ‘value-labels.Rmd’ using rmarkdown
dyld: lazy symbol binding failed: Symbol not found: ____chkstk_darwin
  Referenced from: /usr/local/bin/pandoc (which was built for Mac OS X 10.15)
  Expected in: /usr/lib/libSystem.B.dylib

dyld: Symbol not found: ____chkstk_darwin
  Referenced from: /usr/local/bin/pandoc (which was built for Mac OS X 10.15)
  Expected in: /usr/lib/libSystem.B.dylib

Error: processing vignette 'value-labels.Rmd' failed with diagnostics:
pandoc document conversion failed with error 6
--- failed re-building ‘value-labels.Rmd’

SUMMARY: processing the following files failed:
  ‘ipums-bigdata.Rmd’ ‘ipums-cps.Rmd’ ‘ipums-geography.Rmd’
  ‘ipums-nhgis.Rmd’ ‘ipums-terra.Rmd’ ‘ipums.Rmd’ ‘value-labels.Rmd’

Error: Vignette re-building failed.
Execution halted