As reported by AB:
https://autobuilder.yocto.io/builders/nightly-musl/builds/271
(log: https://autobuilder.yocto.io/builders/nightly-musl/builds/271/steps/BuildImages/logs/stdio)

ERROR: lzop-1.03-r0 do_package_write_ipk: Error executing a python function in exec_python_func() autogenerated:

The stack trace of python calls that resulted in this exception/failure was:
File: 'exec_python_func() autogenerated', lineno: 2, function: <module>
     0001:
 *** 0002:do_package_ipk(d)
     0003:
File: '/home/pokybuild/yocto-autobuilder/yocto-worker/nightly-musl/build/meta/classes/package_ipk.bbclass', lineno: 41, function: do_package_ipk
     0037:    if os.access(os.path.join(tmpdir, "stamps", "IPK_PACKAGE_INDEX_CLEAN"), os.R_OK):
     0038:        os.unlink(os.path.join(tmpdir, "stamps", "IPK_PACKAGE_INDEX_CLEAN"))
     0039:
     0040:    for pkg in packages.split():
 *** 0041:        ipk_write_pkg(pkg, d)
     0042:
     0043:    os.chdir(oldcwd)
     0044:}
     0045:
File: '/home/pokybuild/yocto-autobuilder/yocto-worker/nightly-musl/build/meta/classes/package_ipk.bbclass', lineno: 233, function: ipk_write_pkg
     0229:            conffiles.close()
     0230:
     0231:        os.chdir(basedir)
     0232:        subprocess.check_output("PATH=\"%s\" %s %s %s" % (localdata.getVar("PATH"),
 *** 0233:                                                          d.getVar("OPKGBUILDCMD"), pkg, pkgoutdir), shell=True)
     0234:
     0235:        if d.getVar('IPK_SIGN_PACKAGES') == '1':
     0236:            ipkver = "%s-%s" % (d.getVar('PKGV'), d.getVar('PKGR'))
     0237:            ipk_to_sign = "%s/%s_%s_%s.ipk" % (pkgoutdir, pkgname, ipkver, d.getVar('PACKAGE_ARCH'))
File: '/usr/lib/python3.5/subprocess.py', lineno: 626, function: check_output
     0622:        # empty string. That is maintained here for backwards compatibility.
     0623:        kwargs['input'] = '' if kwargs.get('universal_newlines', False) else b''
     0624:
     0625:    return run(*popenargs, stdout=PIPE, timeout=timeout, check=True,
 *** 0626:               **kwargs).stdout
     0627:
     0628:
     0629:class CompletedProcess(object):
     0630:    """A process that has finished running.
File: '/usr/lib/python3.5/subprocess.py', lineno: 708, function: run
     0704:            raise
     0705:        retcode = process.poll()
     0706:        if check and retcode:
     0707:            raise CalledProcessError(retcode, process.args,
 *** 0708:                                     output=stdout, stderr=stderr)
     0709:    return CompletedProcess(process.args, retcode, stdout, stderr)
     0710:
     0711:
     0712:def list2cmdline(seq):
Exception: subprocess.CalledProcessError: Command 'PATH="/home/pokybuild/yocto-autobuilder/yocto-worker/nightly-musl/build/build/tmp/sysroots-uninative/x86_64-linux/usr/bin:/home/pokybuild/yocto-autobuilder/yocto-worker/nightly-musl/build/scripts:/home/pokybuild/yocto-autobuilder/yocto-worker/nightly-musl/build/build/tmp/work/i586-poky-linux-musl/lzop/1.03-r0/recipe-sysroot-native/usr/bin/i586-poky-linux-musl:/home/pokybuild/yocto-autobuilder/yocto-worker/nightly-musl/build/build/tmp/work/i586-poky-linux-musl/lzop/1.03-r0/recipe-sysroot/usr/bin/crossscripts:/home/pokybuild/yocto-autobuilder/yocto-worker/nightly-musl/build/build/tmp/work/i586-poky-linux-musl/lzop/1.03-r0/recipe-sysroot-native/usr/sbin:/home/pokybuild/yocto-autobuilder/yocto-worker/nightly-musl/build/build/tmp/work/i586-poky-linux-musl/lzop/1.03-r0/recipe-sysroot-native/usr/bin:/home/pokybuild/yocto-autobuilder/yocto-worker/nightly-musl/build/build/tmp/work/i586-poky-linux-musl/lzop/1.03-r0/recipe-sysroot-native/sbin:/home/pokybuild/yocto-autobuilder/yocto-worker/nightly-musl/build/build/tmp/work/i586-poky-linux-musl/lzop/1.03-r0/recipe-sysroot-native/bin:/home/pokybuild/yocto-autobuilder/yocto-worker/nightly-musl/build/bitbake/bin:/home/pokybuild/yocto-autobuilder/yocto-worker/nightly-musl/build/build/tmp/hosttools" opkg-build lzop-dbg /home/pokybuild/yocto-autobuilder/yocto-worker/nightly-musl/build/build/tmp/work/i586-poky-linux-musl/lzop/1.03-r0/deploy-ipks/i586' returned non-zero exit status 1

ERROR: lzop-1.03-r0 do_package_write_ipk: Function failed: do_package_ipk