Error(s) in re-building vignettes:
--- re-building 'adaptation_level.Rmd' using rmarkdown
Loading required package: Rcpp

Attaching package: 'dplyr'

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

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    intersect, setdiff, setequal, union

starting worker pid=71308 on localhost:11802 at 15:39:30.440
starting worker pid=23472 on localhost:11802 at 15:39:30.722

SAMPLING FOR MODEL 'linear' NOW (CHAIN 1).
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Quitting from lines 88-90 (adaptation_level.Rmd) 
Error: processing vignette 'adaptation_level.Rmd' failed with diagnostics:
result would be too long a vector
--- failed re-building 'adaptation_level.Rmd'

--- re-building 'afterimages.Rmd' using rmarkdown
Loading required package: Rcpp

********************************************************
Note: As of version 1.0.0, cowplot does not change the
  default ggplot2 theme anymore. To recover the previous
  behavior, execute:
  theme_set(theme_cowplot())
********************************************************


Attaching package: 'dplyr'

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

    filter, lag

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    intersect, setdiff, setequal, union

starting worker pid=49844 on localhost:11019 at 15:40:13.668
starting worker pid=99500 on localhost:11019 at 15:40:13.949

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Warning: Removed 1 rows containing missing values (geom_segment).
--- finished re-building 'afterimages.Rmd'

--- re-building 'flanker.Rmd' using rmarkdown
Loading required package: Rcpp

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

starting worker pid=64996 on localhost:11765 at 15:42:17.497
starting worker pid=43344 on localhost:11765 at 15:42:17.809

SAMPLING FOR MODEL 'reaction_time' NOW (CHAIN 1).
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--- finished re-building 'flanker.Rmd'

--- re-building 'stroop.Rmd' using rmarkdown
Loading required package: Rcpp
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Scale for 'fill' is already present. Adding another scale for 'fill', which will replace the existing scale.
--- finished re-building 'stroop.Rmd'

SUMMARY: processing the following file failed:
  'adaptation_level.Rmd'

Error: Vignette re-building failed.
Execution halted