Warning: stack imbalance

[nbenn]

Using code as

set.seed(11)

mat <- matrix(sample(c(0, 1), 5000 * 500, replace = TRUE), nrow = 5000)
mat <- bigmemory::as.big.matrix(mat, type = "double", shared = TRUE)

res <- biglasso::cv.biglasso(
 mat, sample(c(TRUE, FALSE), 5000, replace = TRUE), family = "binomial",
 ncores = 4, nlambda = 50, verbose = TRUE
)

I get

Preprocessing start: 2021-09-20 21:29:25.000
Preprocessing end: 2021-09-20 21:29:25.000

-----------------------------------------------
Lambda 1. Now time: 2021-09-20 21:29:25.000
...
Lambda 49. Now time: 2021-09-20 21:29:27.000
Warning: stack imbalance in '<-', 2 then 21

Any my sessionInfo() is

R version 4.0.2 (2020-06-22)
Platform: x86_64-pc-linux-gnu (64-bit)
Running under: CentOS Linux 7 (Core)

Matrix products: default
BLAS/LAPACK: /cluster/spack/apps/linux-centos7-x86_64/gcc-8.2.0/openblas-0.3.7-aapr6wps44sbmhbedmmigxjk5bhfy5p3/lib/libopenblas_haswell-r0.3.7.so

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

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

loaded via a namespace (and not attached):
[1] bigmemory.sri_0.1.3 bigmemory_4.5.36    compiler_4.0.2     
[4] Matrix_1.2-18       biglasso_1.4.1      parallel_4.0.2     
[7] Rcpp_1.0.7          grid_4.0.2          ncvreg_3.13.0      
[10] lattice_0.20-41    

Happy to share further info if requested!