Guix Pull - Device or Resource Busy

["mhrunnels@yahoo.com" via <help-guix@gnu.org>]

Hi All,
I have installed the Guix system using the Guix 1.4 image and the graphical installer.
Following directions in the Guix 1.4 manual, I have tried to run the following command as root from within the newly installed and running system.
# guix pull
This produces the following error message.
# guix pull: error: while setting up the build environment: cannot remove real-root directory: device or resource busy
With that error message, the "guix pull" command fails.
I have also run the "guix pull" command with the following options to ascertain the error.
# guix pull --verbosity=3 --debug=5
However, I have been unable to capture the standard screen output for analysis.  All attempts to direct the output using pipes "|" or redirection ">" have failed.
Note as well that running the "guix install" command for a package produces a very similar error message.
So, with present Linux knowledge, Guix knowledge, the Guix 1.4 manual and various internet searches as resources, I have been unable to resolve this problem.
Any assistance or insight would be appreciated.
MH
PS - My "config.scm" file used to install and run the system is reproduced below.
;; This is an operating system configuration generated;; by the graphical installer.;;;; Once installation is complete, you can learn and modify;; this file to tweak the system configuration, and pass it;; to the 'guix system reconfigure' command to effect your;; changes.
;; Indicate which modules to import to access the variables;; used in this configuration.(use-modules (gnu))(use-service-modules cups desktop networking ssh xorg)
(operating-system  (locale "en_US.utf8")  (timezone "America/New_York")  (keyboard-layout (keyboard-layout "us"))  (host-name "L85")
  ;; The list of user accounts ('root' is implicit).  (users (cons* (user-account                  (name "J37")                  (comment "J37")                  (group "users")                  (home-directory "/home/J37")                  (supplementary-groups '("wheel" "netdev" "audio" "video")))                %base-user-accounts))
  ;; Packages installed system-wide.  Users can also install packages  ;; under their own account: use 'guix search KEYWORD' to search  ;; for packages and 'guix install PACKAGE' to install a package.  (packages (append (list (specification->package "nss-certs"))                    %base-packages))
  ;; Below is the list of system services.  To search for available  ;; services, run 'guix system search KEYWORD' in a terminal.  (services   (append (list (service tor-service-type)                 (service network-manager-service-type)                 (service wpa-supplicant-service-type)                 (service ntp-service-type)                 (service gpm-service-type)                 (service cups-service-type))
           ;; This is the default list of services we           ;; are appending to.           %base-services))
  (bootloader (bootloader-configuration                (bootloader grub-efi-bootloader)                (targets (list "/boot/efi"))                (keyboard-layout keyboard-layout)))
  ;; The list of file systems that get "mounted".  The unique  ;; file system identifiers there ("UUIDs") can be obtained  ;; by running 'blkid' in a terminal.  (file-systems (cons* (file-system                         (mount-point "")                         (device (uuid "BDAA-FF93"                                       'fat16))                         (type "vfat"))                       (file-system                         (mount-point "/")                         (device (uuid                                  "2c7a6854-30fd-44a9-92e5-cb04b834577e"                                  'ext4))                         (type "ext4"))                       (file-system                         (mount-point "/boot/efi")                         (device (uuid "6614-6330"                                       'fat32))                         (type "vfat")) %base-file-systems)))