`busybox` and `logd` clash on install over `logread` although CONFIG_BUSYBOX_LOGREAD is not set

In the install step, make clean; make -j1 V=sc bails out with:

Collected errors:
[...]
 * check_data_file_clashes: Package busybox wants to install file /o/build_dir/target-i386_pentium-mmx_musl/root-x86/sbin/logread
	But that file is already provided by package  * logd
 * opkg_install_cmd: Cannot install package busybox.

grep -i logread .config:

# CONFIG_BUSYBOX_DEFAULT_LOGREAD is not set
# CONFIG_BUSYBOX_DEFAULT_FEATURE_LOGREAD_REDUCED_LOCKING is not set
# CONFIG_BUSYBOX_CONFIG_LOGREAD is not set

grep -i logd .config:

CONFIG_DEFAULT_logd=y
# CONFIG_BUSYBOX_DEFAULT_SVLOGD is not set
# CONFIG_BUSYBOX_DEFAULT_KLOGD is not set
# CONFIG_BUSYBOX_DEFAULT_FEATURE_KLOGD_KLOGCTL is not set
# CONFIG_BUSYBOX_DEFAULT_SYSLOGD is not set
# CONFIG_BUSYBOX_DEFAULT_FEATURE_SYSLOGD_DUP is not set
# CONFIG_BUSYBOX_DEFAULT_FEATURE_SYSLOGD_CFG is not set
# CONFIG_BUSYBOX_DEFAULT_FEATURE_SYSLOGD_PRECISE_TIMESTAMPS is not set
CONFIG_BUSYBOX_DEFAULT_FEATURE_SYSLOGD_READ_BUFFER_SIZE=0
# CONFIG_BUSYBOX_CONFIG_SVLOGD is not set
# CONFIG_BUSYBOX_CONFIG_KLOGD is not set
# CONFIG_BUSYBOX_CONFIG_SYSLOGD is not set
CONFIG_PACKAGE_logd=y
# CONFIG_PACKAGE_ulogd is not set

What might be the problem? What else might be needed to diagnose?

OpenWRT 21.02-rc1

Whole .config is here.