Computing Guix derivation for 'x86_64-linux'...  
substitute: 
substitute: updating substitutes from 'https://ci.guix.gnu.org'...   0.0%
substitute: updating substitutes from 'https://ci.guix.gnu.org'... 100.0%
substitute: 
substitute: updating substitutes from 'https://bordeaux.guix.gnu.org'...   0.0%
substitute: updating substitutes from 'https://bordeaux.guix.gnu.org'... 100.0%
The following derivations will be built:
   /gnu/store/k6fydh0s6syfh4vlnsj21z3vck2vg7p1-profile.drv
   /gnu/store/fn73y57ch6j1626k7534dvcbwidlbn2b-profile.drv
   /gnu/store/sxv6zqsrymh9r9vamf6a7kq2bmy0nv9w-inferior-script.scm.drv
The following profile hooks will be built:
   /gnu/store/7yf186xrk839zkpwlcdyf2ian3aiv35p-fonts-dir.drv
   /gnu/store/gbnw732zaqxfdqwipzfdjlfv8g7vvz0j-ca-certificate-bundle.drv
   /gnu/store/nxi1235dqbcck0g4zicmrhyhnj4flkqn-info-dir.drv
   /gnu/store/ps587vphqp0yji54lz3c46kysfp7zfmj-guix-package-cache.drv
   /gnu/store/yg5a84zvzi4z4zhm5vz7fb75h81zfz4p-emacs-subdirs.drv
building path(s) `/gnu/store/1cy4a59jim2kxqk9xpds3vsrdhcvsgha-ca-certificate-bundle'
building path(s) `/gnu/store/z0siy7l4fw0dgw6bim7gwqp0ycj2kvhg-emacs-subdirs'
building path(s) `/gnu/store/kcjsny2k4ds387h7i9ccnazxzg9m6fb2-fonts-dir'
building path(s) `/gnu/store/86xh3is1n7063hr8qm98g3r908hly448-info-dir'
building path(s) `/gnu/store/2is3dcyv8bl2yqb699m44bzymikwdrn1-profile'
building path(s) `/gnu/store/5kz5f5z4qk0hv2gbnkf224gghhi1b29i-inferior-script.scm'
building path(s) `/gnu/store/33pzf85pjif326qbalnakkcigrdpkggh-guix-package-cache'
(repl-version 0 1 1)
Generating package cache for '/gnu/store/2is3dcyv8bl2yqb699m44bzymikwdrn1-profile'...
(exception unbound-variable (value #f) (value "Unbound variable: ~S") (value (python-pytorch)) (value #f))
builder for `/gnu/store/ps587vphqp0yji54lz3c46kysfp7zfmj-guix-package-cache.drv' failed to produce output path `/gnu/store/33pzf85pjif326qbalnakkcigrdpkggh-guix-package-cache'
cannot build derivation `/gnu/store/k6fydh0s6syfh4vlnsj21z3vck2vg7p1-profile.drv': 1 dependencies couldn't be built
Backtrace:
In ice-9/boot-9.scm:
  1752:10 12 (with-exception-handler _ _ #:unwind? _ # _)
In unknown file:
          11 (apply-smob/0 #<thunk 7fe1b8654340>)
In ice-9/boot-9.scm:
    724:2 10 (call-with-prompt _ _ #<procedure default-prompt-handle?>)
In ice-9/eval.scm:
    619:8  9 (_ #(#(#<directory (guile-user) 7fe1b8657c80>)))
In cuirass/ui.scm:
   104:10  8 (run-cuirass-command _ . _)
In cuirass/scripts/evaluate.scm:
   107:27  7 (cuirass-evaluate _)
In ice-9/boot-9.scm:
  1752:10  6 (with-exception-handler _ _ #:unwind? _ # _)
In guix/store.scm:
   658:37  5 (thunk)
  2123:25  4 (run-with-store #<store-connection 256.99 7fe1b755bdc0> ?)
In cuirass/scripts/evaluate.scm:
     89:8  3 (_ _)
In guix/store.scm:
  1995:38  2 (_ #<store-connection 256.99 7fe18e9f8370>)
  1421:15  1 (_ #<store-connection 256.99 7fe18e9f8370> _ _)
In ice-9/boot-9.scm:
  1685:16  0 (raise-exception _ #:continuable? _)

ice-9/boot-9.scm:1685:16: In procedure raise-exception:
ERROR:
  1. &store-protocol-error:
      message: "build of `/gnu/store/k6fydh0s6syfh4vlnsj21z3vck2vg7p1-profile.drv' failed"
      status: 1