The build took 00h 00m 46s and was NOT successful.
The program in this build is written in the following languages, according to sloccount:
| SLOC | Language | 
|---|---|
| 7,755 | ansic | 
| 261 | sh | 
| 196 | makefile | 
| 31 | asm | 
| 8,243 | total | 
The process tree of the build process is here.
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Removed vanilla repositories from pacman.conf and added:
        Copied permanent toolchain into container-local sysroot
        /toolchain_root/sysroot  -->  /sysroot/sysroot/toolchain_root/lib  -->  /sysroot/lib/toolchain_root/sbin  -->  /sysroot/sbin/toolchain_root/lib64  -->  /sysroot/lib64/toolchain_root/etc  -->  /sysroot/etc/toolchain_root/share  -->  /sysroot/share/toolchain_root/bin  -->  /sysroot/bin/toolchain_root/var  -->  /sysroot/var/toolchain_root/usr  -->  /sysroot/usr/toolchain_root/glibc-build  -->  /sysroot/glibc-build/toolchain_root/x86_64-pc-linux-gnu  -->  /sysroot/x86_64-pc-linux-gnu/toolchain_root/include  -->  /sysroot/include/toolchain_root/libexec  -->  /sysroot/libexecCMD: sudo -u tuscan PATH=/usr/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin CC=clang CXX=clang++ red makepkg --noextract --syncdeps --skipinteg --skippgpcheck --skipchecksums --noconfirm --nocolor --log --noprogressbar --nocheck
        ==> Making package: efivar 0.23.37.g8740389-1 (Thu Apr 13 17:18:39 UTC 2017)==> Checking runtime dependencies...==> Checking buildtime dependencies...==> WARNING: Using existing $srcdir/ tree==> Starting pkgver()...==> Starting build()...make[1]: Entering directory '/tmp/efivar/src/efivar/src'clang  -I/tmp/efivar/src/efivar/src/include/efivar/ -D_GNU_SOURCE   -L.      -DEFIVAR_BUILD_ENVIRONMENT -o makeguids makeguids.c guid.c -ldl ./makeguids guids.txt guids.bin names.bin \	guid-symbols.c include/efivar/efivar-guids.h33 linesmake -f /tmp/efivar/src/efivar/src/Make.deps deps SOURCES="crc32.c creator.c disk.c gpt.c linux.c loadopt.c dp.c dp-acpi.c dp-hw.c dp-media.c dp-message.c efivarfs.c export.c guid.c guids.S guid-symbols.c lib.c vars.c makeguids.c guid.c include/efivar/efivar.h include/efivar/efiboot.h include/efivar/efiboot-loadopt.h include/efivar/efivar-dp.h include/efivar/efiboot-creator.h include/efivar/efivar-guids.h guid-symbols.c efivar.c"make[2]: Entering directory '/tmp/efivar/src/efivar/src'clang  -I/tmp/efivar/src/efivar/src/include/efivar/ -D_GNU_SOURCE    -MM -MG -MF .crc32.d crc32.cclang  -I/tmp/efivar/src/efivar/src/include/efivar/ -D_GNU_SOURCE    -MM -MG -MF .creator.d creator.cclang  -I/tmp/efivar/src/efivar/src/include/efivar/ -D_GNU_SOURCE    -MM -MG -MF .disk.d disk.cclang  -I/tmp/efivar/src/efivar/src/include/efivar/ -D_GNU_SOURCE    -MM -MG -MF .gpt.d gpt.cclang  -I/tmp/efivar/src/efivar/src/include/efivar/ -D_GNU_SOURCE    -MM -MG -MF .linux.d linux.cclang  -I/tmp/efivar/src/efivar/src/include/efivar/ -D_GNU_SOURCE    -MM -MG -MF .loadopt.d loadopt.cclang  -I/tmp/efivar/src/efivar/src/include/efivar/ -D_GNU_SOURCE    -MM -MG -MF .dp.d dp.cclang  -I/tmp/efivar/src/efivar/src/include/efivar/ -D_GNU_SOURCE    -MM -MG -MF .dp-acpi.d dp-acpi.cclang  -I/tmp/efivar/src/efivar/src/include/efivar/ -D_GNU_SOURCE    -MM -MG -MF .dp-hw.d dp-hw.cclang  -I/tmp/efivar/src/efivar/src/include/efivar/ -D_GNU_SOURCE    -MM -MG -MF .dp-media.d dp-media.cclang  -I/tmp/efivar/src/efivar/src/include/efivar/ -D_GNU_SOURCE    -MM -MG -MF .dp-message.d dp-message.cclang  -I/tmp/efivar/src/efivar/src/include/efivar/ -D_GNU_SOURCE    -MM -MG -MF .efivarfs.d efivarfs.cclang  -I/tmp/efivar/src/efivar/src/include/efivar/ -D_GNU_SOURCE    -MM -MG -MF .export.d export.cclang  -I/tmp/efivar/src/efivar/src/include/efivar/ -D_GNU_SOURCE    -MM -MG -MF .guid.d guid.cclang  -I/tmp/efivar/src/efivar/src/include/efivar/ -D_GNU_SOURCE    -MM -MG -MF .guid-symbols.d guid-symbols.cclang  -I/tmp/efivar/src/efivar/src/include/efivar/ -D_GNU_SOURCE    -MM -MG -MF .lib.d lib.cclang  -I/tmp/efivar/src/efivar/src/include/efivar/ -D_GNU_SOURCE    -MM -MG -MF .vars.d vars.cclang  -I/tmp/efivar/src/efivar/src/include/efivar/ -D_GNU_SOURCE    -MM -MG -MF .makeguids.d makeguids.cclang  -I/tmp/efivar/src/efivar/src/include/efivar/ -D_GNU_SOURCE    -MM -MG -MF .efivar.d efivar.cclang  -I/tmp/efivar/src/efivar/src/include/efivar/ -D_GNU_SOURCE    -MM -MG -MF .guids.d guids.Smake[2]: Leaving directory '/tmp/efivar/src/efivar/src'clang  -I/tmp/efivar/src/efivar/src/include/efivar/ -D_GNU_SOURCE   -fPIC  -c -o dp.o dp.cclang  -I/tmp/efivar/src/efivar/src/include/efivar/ -D_GNU_SOURCE   -fPIC  -c -o dp-acpi.o dp-acpi.cclang  -I/tmp/efivar/src/efivar/src/include/efivar/ -D_GNU_SOURCE   -fPIC  -c -o dp-hw.o dp-hw.cclang  -I/tmp/efivar/src/efivar/src/include/efivar/ -D_GNU_SOURCE   -fPIC  -c -o dp-media.o dp-media.cclang  -I/tmp/efivar/src/efivar/src/include/efivar/ -D_GNU_SOURCE   -fPIC  -c -o dp-message.o dp-message.cclang  -I/tmp/efivar/src/efivar/src/include/efivar/ -D_GNU_SOURCE   -fPIC  -c -o efivarfs.o efivarfs.cefivarfs.c:44:19: warning: duplicate 'const' declaration specifier [-Wduplicate-decl-specifier]static const char const default_efivarfs_path[] = "/sys/firmware/efi/efivars/";                  ^efivarfs.c:46:19: warning: duplicate 'const' declaration specifier [-Wduplicate-decl-specifier]static const char const *                  ^efivarfs.c:62:13: warning: duplicate 'const' declaration specifier [-Wduplicate-decl-specifier]        const char const *path = get_efivarfs_path();                   ^3 warnings generated.clang  -I/tmp/efivar/src/efivar/src/include/efivar/ -D_GNU_SOURCE   -fPIC  -c -o export.o export.cclang  -I/tmp/efivar/src/efivar/src/include/efivar/ -D_GNU_SOURCE   -fPIC  -c -o guid.o guid.cclang  -I/tmp/efivar/src/efivar/src/include/efivar/ -D_GNU_SOURCE   -fPIC  -c -o guids.o guids.Sclang  -I/tmp/efivar/src/efivar/src/include/efivar/ -D_GNU_SOURCE   -fPIC  -c -o guid-symbols.o guid-symbols.cclang  -I/tmp/efivar/src/efivar/src/include/efivar/ -D_GNU_SOURCE   -fPIC  -c -o lib.o lib.cclang  -I/tmp/efivar/src/efivar/src/include/efivar/ -D_GNU_SOURCE   -fPIC  -c -o vars.o vars.cvars.c:35:19: warning: duplicate 'const' declaration specifier [-Wduplicate-decl-specifier]static const char const default_vars_path[] = "/sys/firmware/efi/vars/";                  ^vars.c:37:19: warning: duplicate 'const' declaration specifier [-Wduplicate-decl-specifier]static const char const *                  ^2 warnings generated.clang  -I/tmp/efivar/src/efivar/src/include/efivar/ -D_GNU_SOURCE   -L.       -shared \  -Wl,-soname,libefivar.so.0 \  -Wl,--version-script=libefivar.map \  -o libefivar.so dp.o dp-acpi.o dp-hw.o dp-media.o dp-message.o efivarfs.o export.o guid.o guids.o guid-symbols.o lib.o vars.o -ldl lib.o:(*IND*+0x0): multiple definition of `efi_set_variable'lib.o:lib.c:(.text+0x180): first defined hereclang-3.8: error: linker command failed with exit code 1 (use -v to see invocation)make[1]: *** [/tmp/efivar/src/efivar/Make.rules:20: libefivar.so] Error 1make[1]: Leaving directory '/tmp/efivar/src/efivar/src'make: *** [Makefile:11: all] Error 2==> ERROR: A failure occurred in build().    Aborting...