Running 'ggplot_extraction.R' [10s]
  Running 'trackr-tests.R' [4s]
Running the tests in 'tests/trackr-tests.R' failed.
Complete output:
  > library(trackr)
  Loading required package: histry
  > library(knitr)
  > be = JSONBackend(tempfile())
  > tdb = TrackrDB(backend=be, img_dir = tempdir())
  > defaultTDB(tdb)
  An object of class "TrackrDB"
  Slot "opts":
  An object of class "TrackrOptions"
  Slot "insert_delay":
  [1] 0
  
  Slot "img_dir":
  [1] "D:\\temp\\RtmpOu4m1e"
  
  Slot "img_ext":
  [1] "png"
  
  Slot "backend_opts":
  list()
  
  
  Slot "backend":
  Reference class object of class "JSONBackend"
  Field "docs":
  DocList (0x0)
  Field ".file":
  [1] "D:\\temp\\RtmpOu4m1e\\file4fd014a13170"
  Field "file":
  [1] "D:\\temp\\RtmpOu4m1e\\file4fd014a13170"
  
  > recs = 0
  > sysfil = system.file("test_docs/knitr_test.Rmd", package = "trackr")
  > rmdfil = file.path(tempdir(), "knitr_test.Rmd")
  > file.copy(sysfil, rmdfil)
  [1] TRUE
  > if(rmarkdown::pandoc_available()) {
  +     knit_and_record(rmdfil, verbose = TRUE)
  +     stopifnot(length(findRecords("mtcars")) == 2) ## recvars is 'fit' so that plus report
  +     recs = recs + 2
  + } else {
  +     message("Pandoc not available. Skipping knit_and_record test")
  + }
  
  
  processing file: D:\temp\RtmpOu4m1e/knitr_test.Rmd
  Error in namespaceExport(ns, exports) : 
    undefined exports: %s!=%, %s!==%, %s+%, %s<%, %s<=%, %s==%, %s===%, %s>%, %s>=%, %stri!=%, %stri!==%, %stri+%, %stri<%, %stri<=%, %stri==%, %stri===%, %stri>%, %stri>=%, stri_datetime_add<-, stri_sub<-, stri_subset<-, stri_subset_charclass<-, stri_subset_coll<-, stri_subset_fixed<-, stri_subset_regex<-, stri_c, stri_c_list, stri_cmp, stri_cmp_eq, stri_cmp_equiv, stri_cmp_ge, stri_cmp_gt, stri_cmp_le, stri_cmp_lt, stri_cmp_neq, stri_cmp_nequiv, stri_compare, stri_conv, stri_count, stri_count_boundaries, stri_count_charclass, stri_count_coll, stri_count_fixed, stri_count_regex, stri_count_words, stri_datetime_add, stri_datetime_create, stri_datetime_fields, stri_datetime_format, stri_datetime_fstr, stri_datetime_now, stri_datetime_parse, stri_datetime_symbols, stri_detect, stri_detect_charclass, stri_detect_coll, stri_detect_fixed, stri_detect_regex, stri_dup, stri_duplicated, stri_duplicated_any, stri_enc_detect, stri_enc_detect2, stri_enc_fromutf32, stri_enc_get, stri_enc_inf
  Calls: knit_and_record ... tryCatch -> tryCatchList -> tryCatchOne -> <Anonymous>
  Execution halted