• using R Under development (unstable) (2026-07-15 r90261)
• using platform: x86_64-pc-linux-gnu
• R was compiled by     Debian clang version 22.1.8 (1+b1)     Debian flang version 22.1.8 (1+b1)
• running under: Debian GNU/Linux forky/sid
• using session charset: UTF-8 * current time: 2026-07-17 00:43:43 UTC
• checking for file ‘ff/DESCRIPTION’ ... OK
• this is package ‘ff’ version ‘4.5.2’
• package encoding: UTF-8
• checking CRAN incoming feasibility ... [2s/3s] OK
• 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 serialization versions ... OK
• checking whether package ‘ff’ can be installed ... OK See the install log for details.
• used C compiler: ‘Debian clang version 22.1.8 (1+b1)’
• used C++ compiler: ‘Debian clang version 22.1.8 (1+b1)’
• checking package directory ... OK
• checking for future file timestamps ... 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 ... [0s/0s] OK
• checking whether the package can be loaded with stated dependencies ... [0s/0s] OK
• checking whether the package can be unloaded cleanly ... [0s/0s] OK
• checking whether the namespace can be loaded with stated dependencies ... [0s/0s] OK
• checking whether the namespace can be unloaded cleanly ... [0s/0s] OK
• checking loading without being on the library search path ... [0s/0s] OK
• checking whether startup messages can be suppressed ... [0s/0s] OK
• checking use of S3 registration ... OK
• checking dependencies in R code ... NOTE Unexported object imported by a ':::' call: ‘bit:::R_bit_as_hi’   See the note in ?`:::` about the use of this operator.
• checking S3 generic/method consistency ... OK
• checking replacement functions ... OK
• checking foreign function calls ... OK
• checking R code for possible problems ... [36s/43s] NOTE Found calls to structure() using deprecated special names:   ff/R/array.R (.Dim: 1)   ff/R/hi.R (.Names: 2)   ff/tests/testthat/test-zero_lengths.R (.Dim: 2, .Dimnames: 2, .Names: 1) '.Dim' should be changed to 'dim'. '.Names' should be changed to 'names'. '.Dimnames' should be changed to 'dimnames'.
• checking Rd files ... [1s/2s] 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 line endings in shell scripts ... OK
• checking line endings in C/C++/Fortran sources/headers ... OK
• checking line endings in Makefiles ... OK
• checking compilation flags in Makevars ... OK
• checking for GNU extensions in Makefiles ... OK
• checking for portable use of $(BLAS_LIBS) and $(LAPACK_LIBS) ... OK
• checking use of PKG_*FLAGS in Makefiles ... OK
• checking use of SHLIB_OPENMP_*FLAGS in Makefiles ... OK
• checking pragmas in C/C++ headers and code ... OK
• checking compilation flags used ... OK
• checking compiled code ... OK
• checking examples ... [12s/14s] OK
• checking for unstated dependencies in ‘tests’ ... OK
• checking tests ... [15s/17s] ERROR   Running ‘testthat.R’ [14s/17s] Running the tests in ‘tests/testthat.R’ failed. Complete output:   > library(testthat)   > test_check("ff")   Loading required package: ff   Loading required package: bit      Attaching package: 'bit'      The following object is masked from 'package:base':          xor      Attaching package ff   - getOption("fftempdir")=="/home/hornik/tmp/scratch/Rtmp5ca9zF/ff"      - getOption("ffextension")=="ff"      - getOption("ffdrop")==TRUE      - getOption("fffinonexit")==TRUE      - getOption("ffpagesize")==65536      - getOption("ffcaching")=="mmnoflush" -- consider "ffeachflush" if your system stalls on large writes      - getOption("ffbatchbytes")==16777216 -- consider a different value for tuning your system      - getOption("ffmaxbytes")==536870912 -- consider a different value for tuning your system         Attaching package: 'ff'      The following objects are masked from 'package:utils':          write.csv, write.csv2      The following objects are masked from 'package:base':          is.factor, is.ordered      Saving _problems/test-zero_lengths-1012.R   Saving _problems/test-zero_lengths-1015.R   Saving _problems/test-zero_lengths-1021.R   Saving _problems/test-zero_lengths-1024.R   Saving _problems/test-zero_lengths-1012.R   Saving _problems/test-zero_lengths-1015.R   Saving _problems/test-zero_lengths-1024.R   Saving _problems/test-zero_lengths-1012.R   Saving _problems/test-zero_lengths-1015.R   Saving _problems/test-zero_lengths-1021.R   Saving _problems/test-zero_lengths-1012.R   Saving _problems/test-zero_lengths-1015.R   Saving _problems/test-zero_lengths-1024.R   Saving _problems/test-zero_lengths-1012.R   Saving _problems/test-zero_lengths-1015.R   Saving _problems/test-zero_lengths-1021.R   [ FAIL 16 | WARN 529 | SKIP 0 | PASS 950 ]      ══ Failed tests ════════════════════════════════════════════════════════════════   ── Failure ('test-zero_lengths.R:1012:5'): lots of stuff related to dims work ──   Expected `ftmp[] <- 1L` to run silently.   Actual noise: warnings.   ── Failure ('test-zero_lengths.R:1015:5'): lots of stuff related to dims work ──   Expected `ftmp[, ] <- 2L` to run silently.   Actual noise: warnings.   ── Failure ('test-zero_lengths.R:1021:5'): lots of stuff related to dims work ──   Expected `ftmp[i, ] <- 0L` to run silently.   Actual noise: warnings.   ── Failure ('test-zero_lengths.R:1024:5'): lots of stuff related to dims work ──   Expected `ftmp[, j] <- 1L` to run silently.   Actual noise: warnings.   ── Failure ('test-zero_lengths.R:1012:5'): lots of stuff related to dims work ──   Expected `ftmp[] <- 1L` to run silently.   Actual noise: warnings.   ── Failure ('test-zero_lengths.R:1015:5'): lots of stuff related to dims work ──   Expected `ftmp[, ] <- 2L` to run silently.   Actual noise: warnings.   ── Failure ('test-zero_lengths.R:1024:5'): lots of stuff related to dims work ──   Expected `ftmp[, j] <- 1L` to run silently.   Actual noise: warnings.   ── Failure ('test-zero_lengths.R:1012:5'): lots of stuff related to dims work ──   Expected `ftmp[] <- 1L` to run silently.   Actual noise: warnings.   ── Failure ('test-zero_lengths.R:1015:5'): lots of stuff related to dims work ──   Expected `ftmp[, ] <- 2L` to run silently.   Actual noise: warnings.   ── Failure ('test-zero_lengths.R:1021:5'): lots of stuff related to dims work ──   Expected `ftmp[i, ] <- 0L` to run silently.   Actual noise: warnings.   ── Failure ('test-zero_lengths.R:1012:5'): lots of stuff related to dims work ──   Expected `ftmp[] <- 1L` to run silently.   Actual noise: warnings.   ── Failure ('test-zero_lengths.R:1015:5'): lots of stuff related to dims work ──   Expected `ftmp[, ] <- 2L` to run silently.   Actual noise: warnings.   ── Failure ('test-zero_lengths.R:1024:5'): lots of stuff related to dims work ──   Expected `ftmp[, j] <- 1L` to run silently.   Actual noise: warnings.   ── Failure ('test-zero_lengths.R:1012:5'): lots of stuff related to dims work ──   Expected `ftmp[] <- 1L` to run silently.   Actual noise: warnings.   ── Failure ('test-zero_lengths.R:1015:5'): lots of stuff related to dims work ──   Expected `ftmp[, ] <- 2L` to run silently.   Actual noise: warnings.   ── Failure ('test-zero_lengths.R:1021:5'): lots of stuff related to dims work ──   Expected `ftmp[i, ] <- 0L` to run silently.   Actual noise: warnings.      [ FAIL 16 | WARN 529 | SKIP 0 | PASS 950 ]   Error:   ! Test failures.   Execution halted
• checking PDF version of manual ... [12s/15s] OK
• checking HTML version of manual ... [14s/23s] OK
• checking for non-standard things in the check directory ... OK
• DONE

Status: 1 ERROR, 2 NOTEs