• using R version 4.0.0 alpha (2020-04-01 r78130)
• using platform: x86_64-apple-darwin17.0 (64-bit)
• using session charset: UTF-8
• checking for file ‘survsup/DESCRIPTION’ ... OK
• this is package ‘survsup’ version ‘0.0.2’
• package encoding: UTF-8
• checking package namespace information ... OK
• checking package dependencies ... OK
• checking if this is a source package ... OK
• checking if there is a namespace ... OK
• checking for executable files ... OK
• checking for hidden files and directories ... OK
• checking for portable file names ... OK
• checking for sufficient/correct file permissions ... OK
• checking whether package ‘survsup’ can be installed ... [4s/5s] OK
• checking installed package size ... OK
• checking package directory ... OK
• checking ‘build’ directory ... OK
• checking DESCRIPTION meta-information ... OK
• checking top-level files ... OK
• checking for left-over files ... OK
• checking index information ... OK
• checking package subdirectories ... OK
• checking R files for non-ASCII characters ... OK
• checking R files for syntax errors ... OK
• checking whether the package can be loaded ... OK
• checking whether the package can be loaded with stated dependencies ... OK
• checking whether the package can be unloaded cleanly ... OK
• checking whether the namespace can be loaded with stated dependencies ... OK
• checking whether the namespace can be unloaded cleanly ... OK
• checking loading without being on the library search path ... OK
• checking dependencies in R code ... NOTE
  Namespaces in Imports field not imported from:
    ‘gridExtra’ ‘stats’ ‘survival’ ‘utils’
    All declared Imports should be used.
• checking S3 generic/method consistency ... OK
• checking replacement functions ... OK
• checking foreign function calls ... OK
• checking R code for possible problems ... [3s/5s] OK
• checking Rd files ... OK
• checking Rd metadata ... OK
• checking Rd cross-references ... OK
• checking for missing documentation entries ... OK
• checking for code/documentation mismatches ... OK
• checking Rd \usage sections ... OK
• checking Rd contents ... OK
• checking for unstated dependencies in examples ... OK
• checking installed files from ‘inst/doc’ ... OK
• checking files in ‘vignettes’ ... OK
• checking examples ... ERROR
  Running examples in ‘survsup-Ex.R’ failed
  The error most likely occurred in:
  
  > ### Name: nar
  > ### Title: Add a numbers at risk table to a Kaplan-Meier plot
  > ### Aliases: nar
  >
  > ### ** Examples
  >
  > library(survsup); library(ggplot2); library(dplyr); library(survival)
  
  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
  
  >
  > retinopathy %>%
  + survfit(Surv(futime, status) ~ trt, data = .) %>%
  + plot_survfit() %>%
  + nar()
  Error in `$<-.data.frame`(`*tmp*`, "y", value = NA_real_) :
    replacement has 1 row, data has 0
  Calls: %>% ... withVisible -> <Anonymous> -> nar -> $<- -> $<-.data.frame
  Execution halted
• checking for unstated dependencies in vignettes ... OK
• checking package vignettes in ‘inst/doc’ ... OK
• checking running R code from vignettes ... [0s/1s] NONE
    ‘survsup_intro.Rmd’ using ‘UTF-8’... [0s/1s] OK
• checking re-building of vignette outputs ... [5s/12s] WARNING
  Error(s) in re-building vignettes:
    ...
  --- re-building ‘survsup_intro.Rmd’ using rmarkdown
  Quitting from lines 92-96 (survsup_intro.Rmd)
  Error: processing vignette 'survsup_intro.Rmd' failed with diagnostics:
  replacement has 1 row, data has 0
  --- failed re-building ‘survsup_intro.Rmd’
  
  SUMMARY: processing the following file failed:
    ‘survsup_intro.Rmd’
  
  Error: Vignette re-building failed.
  Execution halted
  
• checking PDF version of manual ... OK
• DONE
  Status: 1 ERROR, 1 WARNING, 1 NOTE