Error(s) in re-building vignettes:
  ...
--- re-building ‘rvest-benchmarks.Rmd’ using rmarkdown
** Processing: /home/hornik/tmp/R.check/r-devel-clang/Work/PKGS/readMDTable.Rcheck/vign_test/readMDTable/vignettes/rvest-benchmarks_files/figure-html/benchmark-1-1.png
864x288 pixels, 8 bits/pixel, 255 colors in palette
Reducing image to 8 bits/pixel, grayscale
Input IDAT size = 10136 bytes
Input file size = 11003 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 8796
  zc = 9  zm = 8  zs = 1  f = 0
  zc = 1  zm = 8  zs = 2  f = 0
  zc = 9  zm = 8  zs = 3  f = 0
  zc = 9  zm = 8  zs = 0  f = 5
  zc = 9  zm = 8  zs = 1  f = 5
  zc = 1  zm = 8  zs = 2  f = 5
  zc = 9  zm = 8  zs = 3  f = 5
                               
Selecting parameters:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 8796

Output IDAT size = 8796 bytes (1340 bytes decrease)
Output file size = 8874 bytes (2129 bytes = 19.35% decrease)

** Processing: /home/hornik/tmp/R.check/r-devel-clang/Work/PKGS/readMDTable.Rcheck/vign_test/readMDTable/vignettes/rvest-benchmarks_files/figure-html/benchmark-2-1.png
864x288 pixels, 8 bits/pixel, 255 colors in palette
Reducing image to 8 bits/pixel, grayscale
Input IDAT size = 10755 bytes
Input file size = 11622 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 9384
  zc = 9  zm = 8  zs = 1  f = 0
  zc = 1  zm = 8  zs = 2  f = 0
  zc = 9  zm = 8  zs = 3  f = 0
  zc = 9  zm = 8  zs = 0  f = 5
  zc = 9  zm = 8  zs = 1  f = 5
  zc = 1  zm = 8  zs = 2  f = 5
  zc = 9  zm = 8  zs = 3  f = 5
                               
Selecting parameters:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 9384

Output IDAT size = 9384 bytes (1371 bytes decrease)
Output file size = 9462 bytes (2160 bytes = 18.59% decrease)


Quitting from rvest-benchmarks.Rmd:78-89 [benchmark-3]
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
<error/rlang_error>
Error in `open.connection()`:
! cannot open the connection
---
Backtrace:
    ▆
 1. └─readr::read_file(mtcars_split_html_url)
 2.   └─readr::datasource(file, skip_empty_rows = FALSE)
 3.     └─readr:::datasource_connection(...)
 4.       └─readr:::read_connection(path)
 5.         ├─base::open(con, "rb")
 6.         └─base::open.connection(con, "rb")
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Error: processing vignette 'rvest-benchmarks.Rmd' failed with diagnostics:
cannot open the connection
--- failed re-building ‘rvest-benchmarks.Rmd’

SUMMARY: processing the following file failed:
  ‘rvest-benchmarks.Rmd’

Error: Vignette re-building failed.
Execution halted