Bug#1114070: bliss: FTBFS: Fontconfig error: No writable cache directories

[Santiago Vila]

Package: src:bliss
Version: 0.77-3
Severity: serious
Tags: ftbfs forky sid

Dear maintainer:

During a rebuild of all packages in unstable, your package failed to build.

Below you will find how the build ends (probably the most relevant part,
but not necessarily). If required, the full build log is available here:

https://people.debian.org/~sanvila/build-logs/202509/

About the archive rebuild: The build was made on virtual machines from AWS,
using sbuild and a reduced chroot with only build-essential packages.

If you could not reproduce the bug please contact me privately, as I
am willing to provide ssh access to a virtual machine where the bug is
fully reproducible.

If this is really a bug in one of the build-depends, please use
reassign and add an affects on src:bliss, so that this is still
visible in the BTS web page for this package.

Thanks.

--------------------------------------------------------------------------------
[...]
 debian/rules clean
dh clean --builddirectory=_build
   dh_auto_clean -O--builddirectory=_build
   dh_autoreconf_clean -O--builddirectory=_build
   dh_clean -O--builddirectory=_build
 debian/rules binary
dh binary --builddirectory=_build
   dh_update_autotools_config -O--builddirectory=_build
   dh_autoreconf -O--builddirectory=_build
libtoolize: putting auxiliary files in AC_CONFIG_AUX_DIR, 'build-aux'.
libtoolize: copying file 'build-aux/ltmain.sh'
libtoolize: putting macros in AC_CONFIG_MACRO_DIRS, 'm4'.
libtoolize: copying file 'm4/libtool.m4'
libtoolize: copying file 'm4/ltoptions.m4'

[... snipped ...]

Preprocessing /<<PKGBUILDDIR>>/src/stats.hh...
Parsing file /<<PKGBUILDDIR>>/src/stats.hh...
Preprocessing /<<PKGBUILDDIR>>/src/timer.hh...
Parsing file /<<PKGBUILDDIR>>/src/timer.hh...
Preprocessing /<<PKGBUILDDIR>>/src/uintseqhash.cc...
Parsing file /<<PKGBUILDDIR>>/src/uintseqhash.cc...
Preprocessing /<<PKGBUILDDIR>>/src/uintseqhash.hh...
Parsing file /<<PKGBUILDDIR>>/src/uintseqhash.hh...
Preprocessing /<<PKGBUILDDIR>>/src/utils.cc...
Parsing file /<<PKGBUILDDIR>>/src/utils.cc...
Preprocessing /<<PKGBUILDDIR>>/src/utils.hh...
Parsing file /<<PKGBUILDDIR>>/src/utils.hh...
Building macro definition list...
Building group list...
Building directory list...
Building namespace list...
Building file list...
Building class list...
Building concept list...
Computing nesting relations for classes...
Associating documentation with classes...
Associating documentation with concepts...
Associating documentation with modules...
Building example list...
Searching for enumerations...
Searching for documented typedefs...
Searching for members imported via using declarations...
Searching for included using directives...
Searching for documented variables...
Building interface member list...
Building member list...
Searching for friends../<<PKGBUILDDIR>>/src/heap.hh:39: warning: documented symbol 'bool bliss::Heap::@0::operator()' was not declared or defined.
Fontconfig error: No writable cache directories
Fontconfig error: No writable cache directories
Fontconfig error: No writable cache directories
Fontconfig error: No writable cache directories
Fontconfig error: No writable cache directories
Fontconfig error: No writable cache directories
Fontconfig error: No writable cache directories
Fontconfig error: No writable cache directories
Fontconfig error: No writable cache directories
Fontconfig error: No writable cache directories
Fontconfig error: No writable cache directories
Fontconfig error: No writable cache directories
Fontconfig error: No writable cache directories
Fontconfig error: No writable cache directories
Fontconfig error: No writable cache directories
Fontconfig error: No writable cache directories
Fontconfig error: No writable cache directories
Fontconfig error: No writable cache directories
Fontconfig error: No writable cache directories
Fontconfig error: No writable cache directories
Fontconfig error: No writable cache directories
Fontconfig error: No writable cache directories
Fontconfig error: No writable cache directories
Fontconfig error: No writable cache directories
Fontconfig error: No writable cache directories
.
Searching for documented defines...
Computing class inheritance relations...
Computing class usage relations...
Flushing cached template relations that have become invalid...
Computing class relations...
Add enum values to enums...
Searching for member function documentation...
Creating members for template instances...
Building page list...
Search for main page...
Computing page relations...
Determining the scope of groups...
Computing module relations...
Sorting lists...
Determining which enums are documented
Computing member relations...
Building full member lists recursively...
Adding members to member groups.
Computing member references...
Inheriting documentation...
Generating disk names...
Adding source references...
Adding xrefitems...
Sorting member lists...
Setting anonymous enum type...
Computing dependencies between directories...
Generating citations page...
Counting members...
Counting data structures...
Resolving user defined references...
Finding anchors and sections in the documentation...
Transferring function references...
Combining using relations...
Adding members to index pages...
Correcting members for VHDL...
Computing tooltip texts...
Generating style sheet...
Generating search indices...
Generating example documentation...
Generating file sources...
Generating code for file src/abstractgraph.hh...
Generating code for file src/bignum.hh...
Generating code for file src/bliss_C.h...
Generating code for file src/defs.hh...
Generating code for file src/digraph.hh...
Generating code for file src/graph.hh...
Generating code for file src/heap.hh...
Generating code for file src/kqueue.hh...
Generating code for file src/orbit.hh...
Generating code for file src/partition.hh...
Generating code for file src/stats.hh...
Generating code for file src/timer.hh...
Generating code for file src/uintseqhash.hh...
Generating code for file src/utils.hh...
Generating file documentation...
Generating docs for file src/bliss_C.h...
Generating docs for file src/defs.hh...
Generating docs for file src/utils.hh...
Generating page documentation...
Generating docs for page executable...
Generating group documentation...
Generating class documentation...
Generating docs for compound bliss_graph_struct...
Generating docs for compound bliss_stats_struct...
Generating concept documentation...
Generating module documentation...
Generating namespace documentation...
Generating docs for namespace bliss
Generating docs for compound bliss::AbstractGraph...
Generating docs for compound bliss::BigNum...
Generating docs for compound bliss::Digraph...
Generating docs for compound bliss::Graph...
Generating docs for compound bliss::Heap...
Generating docs for compound bliss::KQueue...
Generating docs for compound bliss::Orbit...
Generating docs for compound bliss::Partition...
Generating docs for nested compound bliss::Partition::Cell...
Generating docs for compound bliss::Stats...
Generating docs for compound bliss::Timer...
Generating docs for compound bliss::UintSeqHash...
Generating graph info page...
Generating directory documentation...
Generating index page...
Generating main page...
Generating page index...
Generating topic index...
Generating module index...
Generating module member index...
Generating namespace index...
Generating namespace member index...
Generating concept index...
Generating annotated compound index...
Generating alphabetical compound index...
Generating hierarchical class index...
Generating graphical class hierarchy...
Generating member index...
Generating file index...
Generating file member index...
Generating example index...
finalizing index lists...
writing tag file...
Running plantuml with JAVA...
Running dot...
Generating dot graphs using 3 parallel threads...
Running dot for graph 1/26
Running dot for graph 2/26
Running dot for graph 3/26
Running dot for graph 4/26
Running dot for graph 5/26
Running dot for graph 6/26
Running dot for graph 7/26
Running dot for graph 8/26
Running dot for graph 9/26
Running dot for graph 10/26
Running dot for graph 11/26
Running dot for graph 12/26
Running dot for grFontconfig error: No writable cache directories
Fontconfig error: No writable cache directories
Fontconfig error: No writable cache directories
Fontconfig error: No writable cache directories
Fontconfig error: No writable cache directories
Fontconfig error: No writable cache directories
Fontconfig error: No writable cache directories
Fontconfig error: No writable cache directories
Fontconfig error: No writable cache directories
Fontconfig error: No writable cache directories
Fontconfig error: No writable cache directories
Fontconfig error: No writable cache directories
Fontconfig error: No writable cache directories
Fontconfig error: No writable cache directories
Fontconfig error: No writable cache directories
Fontconfig error: No writable cache directories
Fontconfig error: No writable cache directories
Fontconfig error: No writable cache directories
Fontconfig error: No writable cache directories
Fontconfig error: No writable cache directories
aph 13/26
Running dot for graph 14/26
Running dot for graph 15/26
Running dot for graph 16/26
Running dot for graph 17/26
Running dot for graph 18/26
Running dot for graph 19/26
Running dot for graph 20/26
Running dot for graph 21/26
Running dot for graph 22/26
Running dot for graph 23/26
Running dot for graph 24/26
Running dot for graph 25/26
Running dot for graph 26/26
Patching output file 1/13
Patching output file 2/13
Patching output file 3/13
Patching output file 4/13
Patching output file 5/13
Patching output file 6/13
Patching output file 7/13
Patching output file 8/13
Patching output file 9/13
Patching output file 10/13
Patching output file 11/13
Patching output file 12/13
Patching output file 13/13
type lookup cache used 785/65536 hits=3498 misses=842
symbol lookup cache used 889/65536 hits=3806 misses=889
finished...
cd /<<PKGBUILDDIR>>/_build/DEBIAN/doc/html && { \
	rm -f *.md5 jquery.js ; \
	rdfind -outputname /dev/null -makesymlinks true . ; \
	symlinks -r -c -s -v . ; \
	ln -sf /usr/share/javascript/jquery/jquery.js ; \
	}
Now scanning ".", found 220 files.
Now have 220 files in total.
Removed 0 files due to nonunique device and inode.
Total size is 1381611 bytes or 1 MiB
Removed 170 files due to unique sizes from list. 50 files left.
Now eliminating candidates based on first bytes: removed 20 files from list. 30 files left.
Now eliminating candidates based on last bytes: removed 2 files from list. 28 files left.
Now eliminating candidates based on sha1 checksum: removed 12 files from list. 16 files left.
It seems like you have 16 files that are not unique
Totally, 6 KiB can be reduced.
Now making results file /dev/null
Now making symbolic links. creating 
Making 8 links.
absolute: /<<PKGBUILDDIR>>/_build/DEBIAN/doc/html/search/functions_c.js -> /<<PKGBUILDDIR>>/_build/DEBIAN/doc/html/search/all_f.js
changed:  /<<PKGBUILDDIR>>/_build/DEBIAN/doc/html/search/functions_c.js -> all_f.js
absolute: /<<PKGBUILDDIR>>/_build/DEBIAN/doc/html/search/functions_10.js -> /<<PKGBUILDDIR>>/_build/DEBIAN/doc/html/search/all_14.js
changed:  /<<PKGBUILDDIR>>/_build/DEBIAN/doc/html/search/functions_10.js -> all_14.js
absolute: /<<PKGBUILDDIR>>/_build/DEBIAN/doc/html/search/functions_4.js -> /<<PKGBUILDDIR>>/_build/DEBIAN/doc/html/search/all_5.js
changed:  /<<PKGBUILDDIR>>/_build/DEBIAN/doc/html/search/functions_4.js -> all_5.js
absolute: /<<PKGBUILDDIR>>/_build/DEBIAN/doc/html/search/functions_11.js -> /<<PKGBUILDDIR>>/_build/DEBIAN/doc/html/search/all_15.js
changed:  /<<PKGBUILDDIR>>/_build/DEBIAN/doc/html/search/functions_11.js -> all_15.js
absolute: /<<PKGBUILDDIR>>/_build/DEBIAN/doc/html/search/functions_6.js -> /<<PKGBUILDDIR>>/_build/DEBIAN/doc/html/search/all_8.js
changed:  /<<PKGBUILDDIR>>/_build/DEBIAN/doc/html/search/functions_6.js -> all_8.js
absolute: /<<PKGBUILDDIR>>/_build/DEBIAN/doc/html/search/pages_1.js -> /<<PKGBUILDDIR>>/_build/DEBIAN/doc/html/search/all_4.js
changed:  /<<PKGBUILDDIR>>/_build/DEBIAN/doc/html/search/pages_1.js -> all_4.js
absolute: /<<PKGBUILDDIR>>/_build/DEBIAN/doc/html/search/variables_3.js -> /<<PKGBUILDDIR>>/_build/DEBIAN/doc/html/search/all_13.js
changed:  /<<PKGBUILDDIR>>/_build/DEBIAN/doc/html/search/variables_3.js -> all_13.js
absolute: /<<PKGBUILDDIR>>/_build/DEBIAN/doc/html/search/classes_5.js -> /<<PKGBUILDDIR>>/_build/DEBIAN/doc/html/search/all_7.js
changed:  /<<PKGBUILDDIR>>/_build/DEBIAN/doc/html/search/classes_5.js -> all_7.js
cd /<<PKGBUILDDIR>>/_build/DEBIAN/doc/latex && { \
	make && mv refman.pdf bliss_refman.pdf ; \
	}
make[3]: Entering directory '/<<PKGBUILDDIR>>/_build/DEBIAN/doc/latex'
rm -f *.ps *.dvi *.aux *.toc *.idx *.ind *.ilg *.log *.out *.brf *.blg *.bbl refman.pdf
pdflatex refman
This is pdfTeX, Version 3.141592653-2.6-1.40.28 (TeX Live 2025/Debian) (preloaded format=pdflatex)
 restricted \write18 enabled.
entering extended mode
(./refman.tex
LaTeX2e <2025-06-01> patch level 1
L3 programming layer <2025-07-19>

make[3]: *** [Makefile:12: refman.pdf] Error 1
make[3]: Leaving directory '/<<PKGBUILDDIR>>/_build/DEBIAN/doc/latex'
make[2]: *** [debian/adhoc/Makefile:30: doc] Error 2
make[2]: Leaving directory '/<<PKGBUILDDIR>>'
make[1]: *** [debian/rules:16: override_dh_auto_build-indep] Error 2
make[1]: Leaving directory '/<<PKGBUILDDIR>>'
make: *** [debian/rules:13: binary] Error 2
dpkg-buildpackage: error: debian/rules binary subprocess returned exit status 2
--------------------------------------------------------------------------------