don't know how to build these paths:
  /nix/store/s894z8xr4w3zpqgmzs0kbqy10h9iz362-grep-riscv64-linux.drv
warning: ignoring the client-specified setting 'store', because it is a restricted setting and you are not a trusted user
platform: riscv64-linux binfmt=false
unpack: /nix/store/crh3qz04z2qpc4drl6vsyxgnkkc6qavg-grep-3.12
untested: riscv64-linux: no binfmt on this builder
setup: autotools
config.cache: cold
debug: 1 files, 682.9 kB
exports: {"name":"grep","includeDirs":[],"libDirs":[],"libs":[],"pkgconfigDirs":[],"aclocalDirs":[],"env":{},"propagate":[]}
jig: cc cached=0/611 (0%) linked=2 no-daemon=609
uncached: no-daemon	-std=gnu23 -c -g -O2 conftest.c
uncached: no-daemon	-std=gnu23 -c -g -O2 conftest.c
uncached: no-daemon	-std=gnu23 -DHAVE_CONFIG_H -I. -I/build/source/./lib -I.. -Wno-cast-qual -Wno-conversion -Wno-float-equal -Wno-sign-compare -Wno-undef -Wno-unused-function -Wno-unused-parameter -Wno-float-conversion -Wimplicit-fallthrough -Wno-pedantic -Wno-tautological-constant-out-of-range-compare -Wno-s
uncached: no-daemon	-std=gnu23 -DHAVE_CONFIG_H -I. -I/build/source/./lib -I.. -Wno-cast-qual -Wno-conversion -Wno-float-equal -Wno-sign-compare -Wno-undef -Wno-unused-function -Wno-unused-parameter -Wno-float-conversion -Wimplicit-fallthrough -Wno-pedantic -Wno-tautological-constant-out-of-range-compare -Wno-s
uncached: no-daemon	-std=gnu23 -DHAVE_CONFIG_H -I. -I/build/source/./lib -I.. -Wno-cast-qual -Wno-conversion -Wno-float-equal -Wno-sign-compare -Wno-undef -Wno-unused-function -Wno-unused-parameter -Wno-float-conversion -Wimplicit-fallthrough -Wno-pedantic -Wno-tautological-constant-out-of-range-compare -Wno-s