* using log directory ‘/data/gannet/ripley/R/packages/tests-noLD/emuR.Rcheck’
* using R Under development (unstable) (2025-12-07 r89119)
* using platform: x86_64-pc-linux-gnu
* R was compiled by
    gcc (GCC) 15.1.1 20250521 (Red Hat 15.1.1-2)
    GNU Fortran (GCC) 15.1.1 20250521 (Red Hat 15.1.1-2)
* running under: Fedora Linux 42 (Workstation Edition)
* using session charset: UTF-8
* using option ‘--no-stop-on-test-error’
* checking for file ‘emuR/DESCRIPTION’ ... OK
* this is package ‘emuR’ version ‘2.5.2’
* 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 ‘emuR’ can be installed ... [34s/42s] OK
* checking package 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 code 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 whether startup messages can be suppressed ... OK
* checking use of S3 registration ... OK
* checking dependencies in R code ... OK
* checking S3 generic/method consistency ... OK
* checking replacement functions ... OK
* checking foreign function calls ... OK
* checking R code for possible problems ... [73s/88s] OK
* checking Rd files ... OK
* checking Rd metadata ... OK
* checking Rd line widths ... 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 contents of ‘data’ directory ... OK
* checking data for non-ASCII characters ... OK
* checking LazyData ... OK
* checking data for ASCII and uncompressed saves ... OK
* checking examples ... ERROR
Running examples in ‘emuR-Ex.R’ failed
The error most likely occurred in:

> ### Name: buildtrack
> ### Title: Build trackdata objects from the output of by()
> ### Aliases: buildtrack
> ### Keywords: manip
> 
> ### ** Examples
> 
> 
>    #vowlax.fdat is a track data objects of formant of the vowlax segment list
>    #calculate the difference between adjacent formant values
>    p = by(vowlax.fdat[1,2],INDICES=NULL, diff)
Error in r[i1] - r[if (lag < (len <- length(r))) -len:-(len - lag + 1L) else i0] : 
  non-numeric argument to binary operator
Calls: by ... eval -> tapply -> lapply -> FUN -> FUN -> diff.default
Execution halted
* checking for unstated dependencies in ‘tests’ ... OK
* checking tests ...
  Running ‘testthat.R’ [173s/222s]
 [174s/223s] OK
* checking PDF version of manual ... [19s/25s] OK
* checking HTML version of manual ... [22s/32s] OK
* checking for non-standard things in the check directory ... OK
* checking for detritus in the temp directory ... OK
* DONE

Status: 1 ERROR
See
  ‘/data/gannet/ripley/R/packages/tests-noLD/emuR.Rcheck/00check.log’
for details.

Command exited with non-zero status 1
Time 8:19.81, 372.84 + 15.73