D: [iurt_root_command] chroot
Building target platforms: x86_64
Building for target x86_64
sh: line 4: [: -j8: integer expression expected
Installing /home/pterjan/rpmbuild/SRPMS/ocaml-migrate-parsetree-2.4.0-1.mga10.src.rpm
Executing(%mkbuilddir): /bin/sh -e /home/pterjan/rpmbuild/tmp/rpm-tmp.BIvPLR
sh: line 4: [: -j8: integer expression expected
Executing(%prep): /bin/sh -e /home/pterjan/rpmbuild/tmp/rpm-tmp.nNo1iw
+ umask 022
+ cd /home/pterjan/rpmbuild/BUILD/ocaml-migrate-parsetree-2.4.0-build
+ '[' 1 -eq 1 ']'
+ '[' 1 -eq 1 ']'
+ '[' 1 -eq 1 ']'
+ cd /home/pterjan/rpmbuild/BUILD/ocaml-migrate-parsetree-2.4.0-build
+ rm -rf ocaml-migrate-parsetree-2.4.0
+ /usr/lib/rpm/rpmuncompress -x /home/pterjan/rpmbuild/SOURCES/ocaml-migrate-parsetree-2.4.0.tar.gz
+ STATUS=0
+ '[' 0 -ne 0 ']'
+ cd ocaml-migrate-parsetree-2.4.0
+ /usr/bin/chmod -Rf a+rX,u+w,g-w,o-w .
+ RPM_EC=0
++ jobs -p
+ exit 0
sh: line 4: [: -j8: integer expression expected
Executing(%build): /bin/sh -e /home/pterjan/rpmbuild/tmp/rpm-tmp.Jk71ou
+ umask 022
+ cd /home/pterjan/rpmbuild/BUILD/ocaml-migrate-parsetree-2.4.0-build
+ CFLAGS='-O2 -g -pipe -Wformat -Werror=format-security -Wp,-U_FORTIFY_SOURCE,-D_FORTIFY_SOURCE=3 -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -fstack-protector-strong -m64 -fasynchronous-unwind-tables -fstack-clash-protection -fcf-protection=full'
+ export CFLAGS
+ CXXFLAGS='-O2 -g -pipe -Wformat -Werror=format-security -Wp,-U_FORTIFY_SOURCE,-D_FORTIFY_SOURCE=3 -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -fstack-protector-strong -m64 -fasynchronous-unwind-tables -fstack-clash-protection -fcf-protection=full'
+ export CXXFLAGS
+ FFLAGS='-O2 -g -pipe -Wformat -Werror=format-security -Wp,-U_FORTIFY_SOURCE,-D_FORTIFY_SOURCE=3 -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -fstack-protector-strong -m64 -fasynchronous-unwind-tables -fstack-clash-protection -fcf-protection=full '
+ export FFLAGS
+ FCFLAGS='-O2 -g -pipe -Wformat -Werror=format-security -Wp,-U_FORTIFY_SOURCE,-D_FORTIFY_SOURCE=3 -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -fstack-protector-strong -m64 -fasynchronous-unwind-tables -fstack-clash-protection -fcf-protection=full '
+ export FCFLAGS
+ VALAFLAGS=-g
+ export VALAFLAGS
+ RUSTFLAGS='-Copt-level=3 -Cdebuginfo=2 -Ccodegen-units=1 -Cstrip=none --cap-lints=warn'
+ export RUSTFLAGS
+ LDFLAGS='-Wl,--as-needed -Wl,--no-undefined -Wl,-z,relro -Wl,-z,now -Wl,-O1 -Wl,--build-id=sha1 -Wl,--enable-new-dtags -specs=/usr/lib/rpm/redhat/redhat-hardened-ld'
+ export LDFLAGS
+ LT_SYS_LIBRARY_PATH=/usr/lib64:
+ export LT_SYS_LIBRARY_PATH
+ CC=gcc
+ export CC
+ CXX=g++
+ export CXX
+ cd ocaml-migrate-parsetree-2.4.0
+ '[' 1 -eq 1 ']'
+ '[' 1 -eq 1 ']'
+ dune build --release -j48
File "src/dune", lines 7-9, characters 0-93:
7 | (rule
8 |  (targets ast-version)
9 |  (action  (run %{ocaml} %{dep:config/gen.ml} %{ocaml_version})))
(cd _build/default/src && /usr/bin/ocaml config/gen.ml 5.3.0)
Unknown OCaml version 5.3.0
error: Bad exit status from /home/pterjan/rpmbuild/tmp/rpm-tmp.Jk71ou (%build)

RPM build errors:
    Bad exit status from /home/pterjan/rpmbuild/tmp/rpm-tmp.Jk71ou (%build)
I: [iurt_root_command] ERROR: chroot