Bug#1096675: gap-guava: ftbfs with GCC-15

[Matthias Klose]

Package: src:gap-guava
Version: 3.19+ds-3
Severity: important
Tags: sid forky
User: debian-gcc at lists.debian.org
Usertags: ftbfs-gcc-15

[This bug is NOT targeted to the upcoming trixie release]

Please keep this issue open in the bug tracker for the package it
was filed for.  If a fix in another package is required, please
file a bug for the other package (or clone), and add a block in this
package. Please keep the issue open until the package can be built in
a follow-up test rebuild.

The package fails to build in a test rebuild on at least amd64 with
gcc-15/g++-15, but succeeds to build with gcc-14/g++-14. The
severity of this report will be raised before the forky release.

The full build log can be found at:
http://qa-logs.debian.net/2025/02/16/amd64exp/gap-guava_3.19+ds-3_unstable_gccexp.log.gz
The last lines of the build log are at the end of this report.

To build with GCC 15, either set CC=gcc-15 CXX=g++-15 explicitly,
or install the gcc, g++, gfortran, ... packages from experimental.

  apt-get -t=experimental install g++ 

GCC 15 now defaults to the C23/C++23 standards, exposing many FTBFS.
Other Common build failures are new warnings resulting in build failures
with -Werror turned on, or new/dropped symbols in Debian symbols files.
For other C/C++ related build failures see the porting guide at
http://gcc.gnu.org/gcc-15/porting_to.html

[...]
cc -o cjrndper -Wl,-z,relro -Wl,-z,now -v cjrndper.o addsgen.o bitmanp.o chbase.o code.o copy.o cstborb.o errmesg.o essentia.o factor.o field.o matrix.o new.o oldcopy.o partn.o permgrp.o permut.o primes.o randgrp.o randschr.o readdes.o readgrp.o readpar.o readper.o readpts.o storage.o token.o util.o 
Using built-in specs.
COLLECT_GCC=cc
COLLECT_LTO_WRAPPER=/usr/libexec/gcc/x86_64-linux-gnu/15/lto-wrapper
OFFLOAD_TARGET_NAMES=nvptx-none:amdgcn-amdhsa
OFFLOAD_TARGET_DEFAULT=1
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Debian 15-20250213-1' --with-bugurl=file:///usr/share/doc/gcc-15/README.Bugs --enable-languages=c,ada,c++,go,d,fortran,objc,obj-c++,m2,rust,cobol --prefix=/usr --with-gcc-major-version-only --program-suffix=-15 --program-prefix=x86_64-linux-gnu- --enable-shared --enable-linker-build-id --libexecdir=/usr/libexec --without-included-gettext --enable-threads=posix --libdir=/usr/lib --enable-nls --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --with-default-libstdcxx-abi=new --enable-libstdcxx-backtrace --enable-gnu-unique-object --disable-vtable-verify --enable-plugin --enable-default-pie --with-system-zlib --enable-libphobos-checking=release --with-target-system-zlib=auto --enable-objc-gc=auto --enable-multiarch --disable-werror --enable-cet --with-arch-32=i686 --with-abi=m64 --with-multilib-list=m32,m64,mx32 --enable-multilib --with-tune=generic --enable-offload-targets=nvptx-none=/build/reproducible-path/gcc-15-15-20250213/debian/tmp-nvptx/usr,amdgcn-amdhsa=/build/reproducible-path/gcc-15-15-20250213/debian/tmp-gcn/usr --enable-offload-defaulted --without-cuda-driver --enable-checking=yes,extra,rtl --build=x86_64-linux-gnu --host=x86_64-linux-gnu --target=x86_64-linux-gnu
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 15.0.1 20250213 (experimental) [master r15-7502-g26baa2c09b3] (Debian 15-20250213-1) 
COMPILER_PATH=/usr/libexec/gcc/x86_64-linux-gnu/15/:/usr/libexec/gcc/x86_64-linux-gnu/15/:/usr/libexec/gcc/x86_64-linux-gnu/:/usr/lib/gcc/x86_64-linux-gnu/15/:/usr/lib/gcc/x86_64-linux-gnu/
LIBRARY_PATH=/usr/lib/gcc/x86_64-linux-gnu/15/:/usr/lib/gcc/x86_64-linux-gnu/15/../../../x86_64-linux-gnu/:/usr/lib/gcc/x86_64-linux-gnu/15/../../../../lib/:/lib/x86_64-linux-gnu/:/lib/../lib/:/usr/lib/x86_64-linux-gnu/:/usr/lib/../lib/:/usr/lib/gcc/x86_64-linux-gnu/15/../../../:/lib/:/usr/lib/
COLLECT_GCC_OPTIONS='-o' 'cjrndper' '-v' '-mtune=generic' '-march=x86-64' '-dumpdir' 'cjrndper.'
 /usr/libexec/gcc/x86_64-linux-gnu/15/collect2 -plugin /usr/libexec/gcc/x86_64-linux-gnu/15/liblto_plugin.so -plugin-opt=/usr/libexec/gcc/x86_64-linux-gnu/15/lto-wrapper -plugin-opt=-fresolution=/tmp/ccP4EwY6.res -plugin-opt=-pass-through=-lgcc -plugin-opt=-pass-through=-lgcc_s -plugin-opt=-pass-through=-lc -plugin-opt=-pass-through=-lgcc -plugin-opt=-pass-through=-lgcc_s --build-id --eh-frame-hdr -m elf_x86_64 --hash-style=gnu --as-needed -dynamic-linker /lib64/ld-linux-x86-64.so.2 -pie -o cjrndper /usr/lib/gcc/x86_64-linux-gnu/15/../../../x86_64-linux-gnu/Scrt1.o /usr/lib/gcc/x86_64-linux-gnu/15/../../../x86_64-linux-gnu/crti.o /usr/lib/gcc/x86_64-linux-gnu/15/crtbeginS.o -L/usr/lib/gcc/x86_64-linux-gnu/15 -L/usr/lib/gcc/x86_64-linux-gnu/15/../../../x86_64-linux-gnu -L/usr/lib/gcc/x86_64-linux-gnu/15/../../../../lib -L/lib/x86_64-linux-gnu -L/lib/../lib -L/usr/lib/x86_64-linux-gnu -L/usr/lib/../lib -L/usr/lib/gcc/x86_64-linux-gnu/15/../../.. -L/lib -L/usr/lib -z relro -z now cjrndper.o addsgen.o bitmanp.o chbase.o code.o copy.o cstborb.o errmesg.o essentia.o factor.o field.o matrix.o new.o oldcopy.o partn.o permgrp.o permut.o primes.o randgrp.o randschr.o readdes.o readgrp.o readpar.o readper.o readpts.o storage.o token.o util.o -lgcc --push-state --as-needed -lgcc_s --pop-state -lc -lgcc --push-state --as-needed -lgcc_s --pop-state /usr/lib/gcc/x86_64-linux-gnu/15/crtendS.o /usr/lib/gcc/x86_64-linux-gnu/15/../../../x86_64-linux-gnu/crtn.o
cc -o orblist -Wl,-z,relro -Wl,-z,now -v orblist.o addsgen.o bitmanp.o chbase.o copy.o cstborb.o errmesg.o essentia.o factor.o new.o oldcopy.o partn.o permgrp.o permut.o primes.o randgrp.o randschr.o readgrp.o readpar.o readpts.o storage.o token.o util.o 
Using built-in specs.
COLLECT_GCC=cc
COLLECT_LTO_WRAPPER=/usr/libexec/gcc/x86_64-linux-gnu/15/lto-wrapper
OFFLOAD_TARGET_NAMES=nvptx-none:amdgcn-amdhsa
OFFLOAD_TARGET_DEFAULT=1
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Debian 15-20250213-1' --with-bugurl=file:///usr/share/doc/gcc-15/README.Bugs --enable-languages=c,ada,c++,go,d,fortran,objc,obj-c++,m2,rust,cobol --prefix=/usr --with-gcc-major-version-only --program-suffix=-15 --program-prefix=x86_64-linux-gnu- --enable-shared --enable-linker-build-id --libexecdir=/usr/libexec --without-included-gettext --enable-threads=posix --libdir=/usr/lib --enable-nls --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --with-default-libstdcxx-abi=new --enable-libstdcxx-backtrace --enable-gnu-unique-object --disable-vtable-verify --enable-plugin --enable-default-pie --with-system-zlib --enable-libphobos-checking=release --with-target-system-zlib=auto --enable-objc-gc=auto --enable-multiarch --disable-werror --enable-cet --with-arch-32=i686 --with-abi=m64 --with-multilib-list=m32,m64,mx32 --enable-multilib --with-tune=generic --enable-offload-targets=nvptx-none=/build/reproducible-path/gcc-15-15-20250213/debian/tmp-nvptx/usr,amdgcn-amdhsa=/build/reproducible-path/gcc-15-15-20250213/debian/tmp-gcn/usr --enable-offload-defaulted --without-cuda-driver --enable-checking=yes,extra,rtl --build=x86_64-linux-gnu --host=x86_64-linux-gnu --target=x86_64-linux-gnu
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 15.0.1 20250213 (experimental) [master r15-7502-g26baa2c09b3] (Debian 15-20250213-1) 
COMPILER_PATH=/usr/libexec/gcc/x86_64-linux-gnu/15/:/usr/libexec/gcc/x86_64-linux-gnu/15/:/usr/libexec/gcc/x86_64-linux-gnu/:/usr/lib/gcc/x86_64-linux-gnu/15/:/usr/lib/gcc/x86_64-linux-gnu/
LIBRARY_PATH=/usr/lib/gcc/x86_64-linux-gnu/15/:/usr/lib/gcc/x86_64-linux-gnu/15/../../../x86_64-linux-gnu/:/usr/lib/gcc/x86_64-linux-gnu/15/../../../../lib/:/lib/x86_64-linux-gnu/:/lib/../lib/:/usr/lib/x86_64-linux-gnu/:/usr/lib/../lib/:/usr/lib/gcc/x86_64-linux-gnu/15/../../../:/lib/:/usr/lib/
COLLECT_GCC_OPTIONS='-o' 'orblist' '-v' '-mtune=generic' '-march=x86-64' '-dumpdir' 'orblist.'
 /usr/libexec/gcc/x86_64-linux-gnu/15/collect2 -plugin /usr/libexec/gcc/x86_64-linux-gnu/15/liblto_plugin.so -plugin-opt=/usr/libexec/gcc/x86_64-linux-gnu/15/lto-wrapper -plugin-opt=-fresolution=/tmp/cc9TfGDr.res -plugin-opt=-pass-through=-lgcc -plugin-opt=-pass-through=-lgcc_s -plugin-opt=-pass-through=-lc -plugin-opt=-pass-through=-lgcc -plugin-opt=-pass-through=-lgcc_s --build-id --eh-frame-hdr -m elf_x86_64 --hash-style=gnu --as-needed -dynamic-linker /lib64/ld-linux-x86-64.so.2 -pie -o orblist /usr/lib/gcc/x86_64-linux-gnu/15/../../../x86_64-linux-gnu/Scrt1.o /usr/lib/gcc/x86_64-linux-gnu/15/../../../x86_64-linux-gnu/crti.o /usr/lib/gcc/x86_64-linux-gnu/15/crtbeginS.o -L/usr/lib/gcc/x86_64-linux-gnu/15 -L/usr/lib/gcc/x86_64-linux-gnu/15/../../../x86_64-linux-gnu -L/usr/lib/gcc/x86_64-linux-gnu/15/../../../../lib -L/lib/x86_64-linux-gnu -L/lib/../lib -L/usr/lib/x86_64-linux-gnu -L/usr/lib/../lib -L/usr/lib/gcc/x86_64-linux-gnu/15/../../.. -L/lib -L/usr/lib -z relro -z now orblist.o addsgen.o bitmanp.o chbase.o copy.o cstborb.o errmesg.o essentia.o factor.o new.o oldcopy.o partn.o permgrp.o permut.o primes.o randgrp.o randschr.o readgrp.o readpar.o readpts.o storage.o token.o util.o -lgcc --push-state --as-needed -lgcc_s --pop-state -lc -lgcc --push-state --as-needed -lgcc_s --pop-state /usr/lib/gcc/x86_64-linux-gnu/15/crtendS.o /usr/lib/gcc/x86_64-linux-gnu/15/../../../x86_64-linux-gnu/crtn.o
COLLECT_GCC_OPTIONS='-o' 'randobj' '-v' '-mtune=generic' '-march=x86-64' '-dumpdir' 'randobj.'
COLLECT_GCC_OPTIONS='-o' 'cjrndper' '-v' '-mtune=generic' '-march=x86-64' '-dumpdir' 'cjrndper.'
COLLECT_GCC_OPTIONS='-o' 'orblist' '-v' '-mtune=generic' '-march=x86-64' '-dumpdir' 'orblist.'
cc -o generate -Wl,-z,relro -Wl,-z,now -v generate.o addsgen.o bitmanp.o chbase.o copy.o cstborb.o errmesg.o essentia.o factor.o inform.o new.o oldcopy.o optsvec.o partn.o permgrp.o permut.o primes.o randgrp.o randschr.o readgrp.o relator.o stcs.o storage.o token.o util.o  
Using built-in specs.
COLLECT_GCC=cc
COLLECT_LTO_WRAPPER=/usr/libexec/gcc/x86_64-linux-gnu/15/lto-wrapper
OFFLOAD_TARGET_NAMES=nvptx-none:amdgcn-amdhsa
OFFLOAD_TARGET_DEFAULT=1
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Debian 15-20250213-1' --with-bugurl=file:///usr/share/doc/gcc-15/README.Bugs --enable-languages=c,ada,c++,go,d,fortran,objc,obj-c++,m2,rust,cobol --prefix=/usr --with-gcc-major-version-only --program-suffix=-15 --program-prefix=x86_64-linux-gnu- --enable-shared --enable-linker-build-id --libexecdir=/usr/libexec --without-included-gettext --enable-threads=posix --libdir=/usr/lib --enable-nls --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --with-default-libstdcxx-abi=new --enable-libstdcxx-backtrace --enable-gnu-unique-object --disable-vtable-verify --enable-plugin --enable-default-pie --with-system-zlib --enable-libphobos-checking=release --with-target-system-zlib=auto --enable-objc-gc=auto --enable-multiarch --disable-werror --enable-cet --with-arch-32=i686 --with-abi=m64 --with-multilib-list=m32,m64,mx32 --enable-multilib --with-tune=generic --enable-offload-targets=nvptx-none=/build/reproducible-path/gcc-15-15-20250213/debian/tmp-nvptx/usr,amdgcn-amdhsa=/build/reproducible-path/gcc-15-15-20250213/debian/tmp-gcn/usr --enable-offload-defaulted --without-cuda-driver --enable-checking=yes,extra,rtl --build=x86_64-linux-gnu --host=x86_64-linux-gnu --target=x86_64-linux-gnu
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 15.0.1 20250213 (experimental) [master r15-7502-g26baa2c09b3] (Debian 15-20250213-1) 
COMPILER_PATH=/usr/libexec/gcc/x86_64-linux-gnu/15/:/usr/libexec/gcc/x86_64-linux-gnu/15/:/usr/libexec/gcc/x86_64-linux-gnu/:/usr/lib/gcc/x86_64-linux-gnu/15/:/usr/lib/gcc/x86_64-linux-gnu/
LIBRARY_PATH=/usr/lib/gcc/x86_64-linux-gnu/15/:/usr/lib/gcc/x86_64-linux-gnu/15/../../../x86_64-linux-gnu/:/usr/lib/gcc/x86_64-linux-gnu/15/../../../../lib/:/lib/x86_64-linux-gnu/:/lib/../lib/:/usr/lib/x86_64-linux-gnu/:/usr/lib/../lib/:/usr/lib/gcc/x86_64-linux-gnu/15/../../../:/lib/:/usr/lib/
COLLECT_GCC_OPTIONS='-o' 'generate' '-v' '-mtune=generic' '-march=x86-64' '-dumpdir' 'generate.'
 /usr/libexec/gcc/x86_64-linux-gnu/15/collect2 -plugin /usr/libexec/gcc/x86_64-linux-gnu/15/liblto_plugin.so -plugin-opt=/usr/libexec/gcc/x86_64-linux-gnu/15/lto-wrapper -plugin-opt=-fresolution=/tmp/ccJLOLlC.res -plugin-opt=-pass-through=-lgcc -plugin-opt=-pass-through=-lgcc_s -plugin-opt=-pass-through=-lc -plugin-opt=-pass-through=-lgcc -plugin-opt=-pass-through=-lgcc_s --build-id --eh-frame-hdr -m elf_x86_64 --hash-style=gnu --as-needed -dynamic-linker /lib64/ld-linux-x86-64.so.2 -pie -o generate /usr/lib/gcc/x86_64-linux-gnu/15/../../../x86_64-linux-gnu/Scrt1.o /usr/lib/gcc/x86_64-linux-gnu/15/../../../x86_64-linux-gnu/crti.o /usr/lib/gcc/x86_64-linux-gnu/15/crtbeginS.o -L/usr/lib/gcc/x86_64-linux-gnu/15 -L/usr/lib/gcc/x86_64-linux-gnu/15/../../../x86_64-linux-gnu -L/usr/lib/gcc/x86_64-linux-gnu/15/../../../../lib -L/lib/x86_64-linux-gnu -L/lib/../lib -L/usr/lib/x86_64-linux-gnu -L/usr/lib/../lib -L/usr/lib/gcc/x86_64-linux-gnu/15/../../.. -L/lib -L/usr/lib -z relro -z now generate.o addsgen.o bitmanp.o chbase.o copy.o cstborb.o errmesg.o essentia.o factor.o inform.o new.o oldcopy.o optsvec.o partn.o permgrp.o permut.o primes.o randgrp.o randschr.o readgrp.o relator.o stcs.o storage.o token.o util.o -lgcc --push-state --as-needed -lgcc_s --pop-state -lc -lgcc --push-state --as-needed -lgcc_s --pop-state /usr/lib/gcc/x86_64-linux-gnu/15/crtendS.o /usr/lib/gcc/x86_64-linux-gnu/15/../../../x86_64-linux-gnu/crtn.o
COLLECT_GCC_OPTIONS='-o' 'generate' '-v' '-mtune=generic' '-march=x86-64' '-dumpdir' 'generate.'
cc -o wtdist -Wl,-z,relro -Wl,-z,now -v wtdist.o bitmanp.o code.o copy.o errmesg.o essentia.o factor.o field.o new.o partn.o permgrp.o permut.o primes.o readdes.o storage.o token.o util.o  
Using built-in specs.
COLLECT_GCC=cc
COLLECT_LTO_WRAPPER=/usr/libexec/gcc/x86_64-linux-gnu/15/lto-wrapper
OFFLOAD_TARGET_NAMES=nvptx-none:amdgcn-amdhsa
OFFLOAD_TARGET_DEFAULT=1
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Debian 15-20250213-1' --with-bugurl=file:///usr/share/doc/gcc-15/README.Bugs --enable-languages=c,ada,c++,go,d,fortran,objc,obj-c++,m2,rust,cobol --prefix=/usr --with-gcc-major-version-only --program-suffix=-15 --program-prefix=x86_64-linux-gnu- --enable-shared --enable-linker-build-id --libexecdir=/usr/libexec --without-included-gettext --enable-threads=posix --libdir=/usr/lib --enable-nls --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --with-default-libstdcxx-abi=new --enable-libstdcxx-backtrace --enable-gnu-unique-object --disable-vtable-verify --enable-plugin --enable-default-pie --with-system-zlib --enable-libphobos-checking=release --with-target-system-zlib=auto --enable-objc-gc=auto --enable-multiarch --disable-werror --enable-cet --with-arch-32=i686 --with-abi=m64 --with-multilib-list=m32,m64,mx32 --enable-multilib --with-tune=generic --enable-offload-targets=nvptx-none=/build/reproducible-path/gcc-15-15-20250213/debian/tmp-nvptx/usr,amdgcn-amdhsa=/build/reproducible-path/gcc-15-15-20250213/debian/tmp-gcn/usr --enable-offload-defaulted --without-cuda-driver --enable-checking=yes,extra,rtl --build=x86_64-linux-gnu --host=x86_64-linux-gnu --target=x86_64-linux-gnu
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 15.0.1 20250213 (experimental) [master r15-7502-g26baa2c09b3] (Debian 15-20250213-1) 
COMPILER_PATH=/usr/libexec/gcc/x86_64-linux-gnu/15/:/usr/libexec/gcc/x86_64-linux-gnu/15/:/usr/libexec/gcc/x86_64-linux-gnu/:/usr/lib/gcc/x86_64-linux-gnu/15/:/usr/lib/gcc/x86_64-linux-gnu/
LIBRARY_PATH=/usr/lib/gcc/x86_64-linux-gnu/15/:/usr/lib/gcc/x86_64-linux-gnu/15/../../../x86_64-linux-gnu/:/usr/lib/gcc/x86_64-linux-gnu/15/../../../../lib/:/lib/x86_64-linux-gnu/:/lib/../lib/:/usr/lib/x86_64-linux-gnu/:/usr/lib/../lib/:/usr/lib/gcc/x86_64-linux-gnu/15/../../../:/lib/:/usr/lib/
COLLECT_GCC_OPTIONS='-o' 'wtdist' '-v' '-mtune=generic' '-march=x86-64' '-dumpdir' 'wtdist.'
 /usr/libexec/gcc/x86_64-linux-gnu/15/collect2 -plugin /usr/libexec/gcc/x86_64-linux-gnu/15/liblto_plugin.so -plugin-opt=/usr/libexec/gcc/x86_64-linux-gnu/15/lto-wrapper -plugin-opt=-fresolution=/tmp/cchYbCdO.res -plugin-opt=-pass-through=-lgcc -plugin-opt=-pass-through=-lgcc_s -plugin-opt=-pass-through=-lc -plugin-opt=-pass-through=-lgcc -plugin-opt=-pass-through=-lgcc_s --build-id --eh-frame-hdr -m elf_x86_64 --hash-style=gnu --as-needed -dynamic-linker /lib64/ld-linux-x86-64.so.2 -pie -o wtdist /usr/lib/gcc/x86_64-linux-gnu/15/../../../x86_64-linux-gnu/Scrt1.o /usr/lib/gcc/x86_64-linux-gnu/15/../../../x86_64-linux-gnu/crti.o /usr/lib/gcc/x86_64-linux-gnu/15/crtbeginS.o -L/usr/lib/gcc/x86_64-linux-gnu/15 -L/usr/lib/gcc/x86_64-linux-gnu/15/../../../x86_64-linux-gnu -L/usr/lib/gcc/x86_64-linux-gnu/15/../../../../lib -L/lib/x86_64-linux-gnu -L/lib/../lib -L/usr/lib/x86_64-linux-gnu -L/usr/lib/../lib -L/usr/lib/gcc/x86_64-linux-gnu/15/../../.. -L/lib -L/usr/lib -z relro -z now wtdist.o bitmanp.o code.o copy.o errmesg.o essentia.o factor.o field.o new.o partn.o permgrp.o permut.o primes.o readdes.o storage.o token.o util.o -lgcc --push-state --as-needed -lgcc_s --pop-state -lc -lgcc --push-state --as-needed -lgcc_s --pop-state /usr/lib/gcc/x86_64-linux-gnu/15/crtendS.o /usr/lib/gcc/x86_64-linux-gnu/15/../../../x86_64-linux-gnu/crtn.o
COLLECT_GCC_OPTIONS='-o' 'wtdist' '-v' '-mtune=generic' '-march=x86-64' '-dumpdir' 'wtdist.'
make[2]: Leaving directory '/build/reproducible-path/gap-guava-3.19+ds/src/leon'
make[1]: Leaving directory '/build/reproducible-path/gap-guava-3.19+ds'
dh_auto_build: error: make -j8 returned exit code 2
make: *** [debian/rules:16: binary] Error 25
dpkg-buildpackage: error: debian/rules binary subprocess returned exit status 2