failure to find root directory mid-check

[bbolker]

While running revdep_check() on the lme4 package (446 packages, 20 cores, ~3-hour projected run time), I get a sudden stop (1 hour in, after checking 100+ packages) with:

Error: No root directory found in /home/bolker/Documents/R/pkgs/lme4git or its parent directories. Root criterion: contains a file "DESCRIPTION" with contents matching "^Package: "

I was running:

revdep_check("lme4", timeout = as.difftime(45, units = "mins"),
             num_workers = 20)

(lme4 is the package directory, it's directly under the directory listed in the error message)
This isn't a big deal since I can restart, but thought I would report it. (I am simultaneously running revdep_check() on another package on the same machine ... could that be an issue?)

(update: it's failed a couple more times now; I shut down the other revdep_check process in case that was interfering. I've now reduced num_workers to 16 in case that helps with race conditions?)

Session info:

R Under development (unstable) (2023-07-03 r84632)
Platform: x86_64-pc-linux-gnu
Running under: Pop!_OS 22.04 LTS

Matrix products: default
BLAS/LAPACK: /usr/lib/x86_64-linux-gnu/openblas-pthread/libopenblasp-r0.3.20.so;  LAPACK version 3.10.0

locale:
 [1] LC_CTYPE=en_CA.UTF-8       LC_NUMERIC=C              
 [3] LC_TIME=en_CA.UTF-8        LC_COLLATE=en_CA.UTF-8    
 [5] LC_MONETARY=en_CA.UTF-8    LC_MESSAGES=en_CA.UTF-8   
 [7] LC_PAPER=en_CA.UTF-8       LC_NAME=C                 
 [9] LC_ADDRESS=C               LC_TELEPHONE=C            
[11] LC_MEASUREMENT=en_CA.UTF-8 LC_IDENTIFICATION=C       

time zone: America/Toronto
tzcode source: system (glibc)

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base     

other attached packages:
[1] revdepcheck_1.0.0.9001

loaded via a namespace (and not attached):
 [1] rappdirs_0.3.3       utf8_1.2.3           RSQLite_2.3.1       
 [4] hms_1.1.3            digest_0.6.32        magrittr_2.0.3      
 [7] fastmap_1.1.1        blob_1.2.4           jsonlite_1.8.7      
[10] rprojroot_2.0.3      processx_3.8.2       parsedate_1.3.1     
[13] progress_1.2.2       sessioninfo_1.2.2    pkgbuild_1.4.2      
[16] whoami_1.3.0         DBI_1.1.3            rcmdcheck_1.4.0     
[19] rematch2_2.1.2       ps_1.7.5             httr_1.4.6          
[22] fansi_1.0.4          cli_3.6.1            rlang_1.1.1         
[25] crayon_1.5.2         cranlike_1.0.2       bit64_4.0.5         
[28] yaml_2.3.7           remotes_2.4.2        base64enc_0.1-3     
[31] withr_2.5.0          cachem_1.0.8         crancache_0.0.0.9001
[34] tools_4.4.0          gargle_1.5.1         debugme_1.1.0       
[37] memoise_2.0.1        gmailr_2.0.0         curl_5.0.1          
[40] assertthat_0.2.1     vctrs_0.6.3          R6_2.5.1            
[43] lifecycle_1.0.3      fs_1.6.2             bit_4.0.5           
[46] xopen_1.0.0          clisymbols_1.2.0     pkgconfig_2.0.3     
[49] desc_1.4.2           callr_3.7.3          pillar_1.9.0        
[52] glue_1.6.2           xfun_0.39            tibble_3.2.1        
[55] knitr_1.43           compiler_4.4.0       prettyunits_1.1.1