The sasl-3.1.2 application can be applied independently of other applications on a full OTP 20 installation.
When upgrading with instruction 'restart_new_emulator', the generated temporary boot file used 'kernelProcess' statements from the old release instead of the new release. This is now corrected.
This correction is needed for upgrade to OTP-21.
Full runtime dependencies of sasl-3.1.2: erts-9.0, kernel-5.3, stdlib-3.4, tools-2.6.14