[MacPorts] #59899: stack @2.1.3_1 fails to install, reports "Failed to checksum stack: xinstall: Unknown user macports"

[MacPorts]

#59899: stack @2.1.3_1 fails to install, reports "Failed to checksum stack:
xinstall: Unknown user macports"
------------------------+--------------------
 Reporter:  codebrewer  |      Owner:  (none)
     Type:  defect      |     Status:  new
 Priority:  Normal      |  Milestone:
Component:  ports       |    Version:  2.6.2
 Keywords:              |       Port:  stack
------------------------+--------------------
 macOS Catalina 10.15.2

 Xcode 11.3 (11C29)

 MacPorts 2.6.2 installed using:

 {{{
 export PATH=/bin:/sbin:/usr/bin:/usr/sbin
 MP_PREFIX=/Users/mark/MacPorts
 ./configure --with-no-root-privileges --prefix=${MP_PREFIX} --with-
 applications-dir=${MP_PREFIX}/Applications --without-startupitems
 --enable-readline --enable-shared
 make
 make install
 }}}

 Attempting to install '''shellcheck''' pulls '''stack''' in as a
 dependency but the '''stack''' installation fails with:

 {{{
 DEBUG: Executing proc-pre-org.macports.checksum-checksum-0
 Error: Failed to checksum stack: xinstall: Unknown user macports
 DEBUG: Error code: NONE
 DEBUG: Backtrace: xinstall: Unknown user macports
     while executing
 "$pre $targetname"
 Error: See
 /Users/mark/MacPorts/var/macports/logs/_Users_mark_MacPorts_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_lang_stack/stack/main.log
 for details.
 }}}

 '''main.log''' from running {{{port -dt install stack}}} attached. {{{dscl
 . list /users}}} confirms the {{{macports}}} user doesn't exist.

 I see the same error on a machine with MacPorts 2.6.2, macOS Mojave
 10.14.6 and Xcode 10.3 (10G8).

 Shout if I can provide any more info!

-- 
Ticket URL: <https://trac.macports.org/ticket/59899>
MacPorts <https://www.macports.org/>
Ports system for macOS