Computing Guix derivation for 'x86_64-linux'...  
substitute: 
substitute: updating substitutes from 'https://guix.bordeaux.inria.fr'...   0.0%
substitute: updating substitutes from 'https://guix.bordeaux.inria.fr'...  50.0%
substitute: updating substitutes from 'https://guix.bordeaux.inria.fr'... 100.0%
substitute: 
substitute: updating substitutes from 'https://ci.guix.gnu.org'...   0.0%
substitute: updating substitutes from 'https://ci.guix.gnu.org'...  50.0%
substitute: updating substitutes from 'https://ci.guix.gnu.org'... 100.0%
The following derivations will be built:
   /gnu/store/0ixw2fdqvl8nj04ymd275b1bcy1a7cds-profile.drv
   /gnu/store/1yzz864cl0y04ak7fcf4fvfx8vg25scf-guix-past.drv
   /gnu/store/zjwyyyr084l2xflrhd6pc8h1q1bnz1z7-guix-d58c9ca9e.drv
   /gnu/store/1216b6m9irxhcmbxir5690ni7hcbaif3-guix-d58c9ca9e-modules.drv
   /gnu/store/0awih70r0blll8y8zcr571r2a4wq9k2b-guix-system-tests-modules.drv
   /gnu/store/mkcyl0a1bks63bjyz1szr61zg59g11qn-guix-system-tests.drv
   /gnu/store/0dyjg271pjgz0r7xv959afpisyfghn7a-guix-packages-base.drv
   /gnu/store/634s8piq597z2ib1jqigihajyn43ak6b-guix-packages.drv
   /gnu/store/pyz6kxqyizq8342mncckb48gdsy6byhx-guix-cli.drv
   /gnu/store/izja63w5ghywgfwx42dby58i2q3lr1f2-guix-cli-core.drv
   /gnu/store/vh7l62mlckfshq0nmbsz2kawykhv6774-guix-home.drv
   /gnu/store/zmy2nqaradi1cx9fknlhqz5hbq7m17gz-guix-system.drv
   /gnu/store/8czgpg6fpcfw2yphkhdkwy0f0lar4k6m-guix-system-modules.drv
   /gnu/store/9fdmnl6x7mc0mq78wi8yf14yr3vr84b2-guix-cli-core-modules.drv
   /gnu/store/9vpjk207qh2rcfirmdd5rx8j1wf6b2p4-guix-home-modules.drv
   /gnu/store/g61s2d5xwsv8kjlin5ix527in0kf8dw3-guix-packages-base-modules.drv
   /gnu/store/ny9nqnms7n8ra0sg97fx7ywkx40n9xn0-guix-packages-modules.drv
   /gnu/store/szxkbni9xwp3dlbxfckp78p0yvp570i9-guix-cli-modules.drv
   /gnu/store/8cjqi35ryjv8vd8rd9galhkjpirm710d-guix-command.drv
   /gnu/store/cd38zkm7gnpfj1fccdv8waxxi1j6rkhy-guix-module-union.drv
   /gnu/store/qc99n58lsirjb041x67x2p9817r5lhvw-guix-daemon.drv
   /gnu/store/3350jmrmy81gdvyg2rlaycj8hv0rlmk3-profile.drv
   /gnu/store/p2sxysahb31pf9h7zr9rc5phk3dv4yh1-inferior-script.scm.drv
The following profile hooks will be built:
   /gnu/store/i9x4nqnxm95j89c0245fhi5ba578b5wa-ca-certificate-bundle.drv
   /gnu/store/lfar44ibnsg1svzh2blmp5d5wshxgqa4-emacs-subdirs.drv
   /gnu/store/pd7nl3k5ck4agfl1h9srcvj3cclfxd0f-info-dir.drv
   /gnu/store/r9xpfgkd63qlp4q8vcb046cxzh21mjvv-guix-package-cache.drv
   /gnu/store/v3754vbybygrb7mcfnhmnl91wcpk84xx-fonts-dir.drv
waiting for locks or build slots...
building path(s) `/gnu/store/jgfks0dlr9mbs33nn90mqz5g0ahayyf2-guix-past'
(repl-version 0 1 1)
/gnu/store/az5vxkjr07gaqgnnbpc9zz5fg332zhrr-guix-past-972ba34/modules/past/packages/python.scm:466:19: warning: 'texlive-union' is deprecated, use 'texlive-updmap.cfg' instead
past/packages/python.scm:466:19: warning: 'texlive-union' is deprecated, use 'texlive-updmap.cfg' instead
(values (value "/gnu/store/jgfks0dlr9mbs33nn90mqz5g0ahayyf2-guix-past/share/guile/site/3.0"))
building path(s) `/gnu/store/p6gssyiky43mlk39g867sksij3g4983a-ca-certificate-bundle'
building path(s) `/gnu/store/hiafj26grv4im6k80ngdcd80jgwb9yca-emacs-subdirs'
building path(s) `/gnu/store/kkfm3whdhdhzgsgl7lgrp6jy37b8167s-fonts-dir'
Backtrace:
In ice-9/boot-9.scm:
  1752:10 12 (with-exception-handler _ _ #:unwind? _ # _)
In unknown file:
          11 (apply-smob/0 #<thunk 7f07a240b020>)
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) 7f07a2414c80>)))
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)
  2123:24  4 (run-with-store #<store-connection 256.99 7f07a2395b90> ?)
In cuirass/scripts/evaluate.scm:
     89:8  3 (_ _)
In guix/store.scm:
  1995:38  2 (_ #<store-connection 256.99 7f0776edf730>)
  1421:15  1 (_ #<store-connection 256.99 7f0776edf730> _ _)
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: "all build users are currently in use; consider creating additional users and adding them to the `guixbuild' group"
      status: 1