Error(s) in re-building vignettes:
Warning: elapsed-time limit of 30 minutes reached for sub-process
--- re-building ‘dm.Rmd’ using rmarkdown
Warning: elapsed-time limit of 30 minutes reached for sub-process
--- re-building ‘howto-dm-db.Rmd’ using rmarkdown
--- re-building ‘howto-dm-df.Rmd’ using rmarkdown
--- finished re-building ‘howto-dm-df.Rmd’

--- re-building ‘howto-dm-theory.Rmd’ using rmarkdown
--- finished re-building ‘howto-dm-theory.Rmd’

--- re-building ‘tech-dm-cdm.Rmd’ using rmarkdown
--- finished re-building ‘tech-dm-cdm.Rmd’

--- re-building ‘tech-dm-class.Rmd’ using rmarkdown
Caching nycflights db at /tmp/Rtmp5trN4S/working_dir/RtmpsXMibf/nycflights13.sqlite
Creating table: airlines
Creating table: airports
Creating table: flights
Creating table: planes
Creating table: weather
Keys could not be queried, use `learn_keys = FALSE` to mute this message.
--- finished re-building ‘tech-dm-class.Rmd’

--- re-building ‘tech-dm-draw.Rmd’ using rmarkdown
--- finished re-building ‘tech-dm-draw.Rmd’

--- re-building ‘tech-dm-filter.Rmd’ using rmarkdown
── [1mAttaching packages[22m ────────────────────────────────── tidyverse 1.3.0 ──
[32m✔[39m [34mggplot2[39m 3.3.2     [32m✔[39m [34mpurrr  [39m 0.3.4
[32m✔[39m [34mtibble [39m 3.0.3     [32m✔[39m [34mdplyr  [39m 1.0.2
[32m✔[39m [34mtidyr  [39m 1.1.1     [32m✔[39m [34mstringr[39m 1.4.0
[32m✔[39m [34mreadr  [39m 1.3.1     [32m✔[39m [34mforcats[39m 0.5.0
── [1mConflicts[22m ───────────────────────────────────── tidyverse_conflicts() ──
[31m✖[39m [34mdplyr[39m::[32mfilter()[39m masks [34mdm[39m::filter(), [34mstats[39m::filter()
[31m✖[39m [34mdplyr[39m::[32mlag()[39m    masks [34mstats[39m::lag()
--- finished re-building ‘tech-dm-filter.Rmd’

--- re-building ‘tech-dm-join.Rmd’ using rmarkdown
── [1mAttaching packages[22m ────────────────────────────────── tidyverse 1.3.0 ──
[32m✔[39m [34mggplot2[39m 3.3.2     [32m✔[39m [34mpurrr  [39m 0.3.4
[32m✔[39m [34mtibble [39m 3.0.3     [32m✔[39m [34mdplyr  [39m 1.0.2
[32m✔[39m [34mtidyr  [39m 1.1.1     [32m✔[39m [34mstringr[39m 1.4.0
[32m✔[39m [34mreadr  [39m 1.3.1     [32m✔[39m [34mforcats[39m 0.5.0
── [1mConflicts[22m ───────────────────────────────────── tidyverse_conflicts() ──
[31m✖[39m [34mdplyr[39m::[32mfilter()[39m masks [34mdm[39m::filter(), [34mstats[39m::filter()
[31m✖[39m [34mdplyr[39m::[32mlag()[39m    masks [34mstats[39m::lag()
--- finished re-building ‘tech-dm-join.Rmd’

--- re-building ‘tech-dm-low-level.Rmd’ using rmarkdown
--- finished re-building ‘tech-dm-low-level.Rmd’

--- re-building ‘tech-dm-naming.Rmd’ using rmarkdown
--- finished re-building ‘tech-dm-naming.Rmd’

--- re-building ‘tech-dm-zoom.Rmd’ using rmarkdown
--- finished re-building ‘tech-dm-zoom.Rmd’

SUMMARY: processing the following files failed:
  ‘dm.Rmd’ ‘howto-dm-db.Rmd’

Error: Vignette re-building failed.
Execution halted