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'...  50.0%
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'...  50.0%
substitute: updating substitutes from 'https://bordeaux.guix.gnu.org'... 100.0%
The following derivations will be built:
   /gnu/store/4mc2wphij4172ck8mwx3bf0wff877py3-profile.drv
   /gnu/store/88kwh6kqh091cdyz49fwjc6ids7fds5y-guix-past.drv
   /gnu/store/cjbl9a40ilgazqcqbfkrdhv75w1nljqp-profile.drv
   /gnu/store/gmqqvr3pmgsrgdf4r2qsg1r9ahv8yzi7-inferior-script.scm.drv
The following profile hooks will be built:
   /gnu/store/bx4hnz6zfpvw18iq6hmmfvsvvsc8dm1x-ca-certificate-bundle.drv
   /gnu/store/d6snmw82gmzw9vbk4a7p5w2jpwxca003-info-dir.drv
   /gnu/store/lkxcn01nlw3gjq3c1hscqp6kx19dkw1s-emacs-subdirs.drv
   /gnu/store/m5bzsxii3fq7dp559lb8gcdcz40lz3ca-fonts-dir.drv
   /gnu/store/sbk2jy7d56zir90lypnv88b0mr6q7np2-guix-package-cache.drv
building path(s) `/gnu/store/gpblpazmcv063lj3687hfr9kmh8f5zgd-guix-past'
(repl-version 0 1 1)
WARNING: (past packages python): `openssl-1.0' imported from both (gnu packages tls) and (past packages tls)
WARNING: (past packages web): `openssl-1.0' imported from both (past packages tls) and (gnu packages tls)
WARNING: (past packages python): `openssl-1.0' imported from both (gnu packages tls) and (past packages tls)
WARNING: (past packages web): `openssl-1.0' imported from both (past packages tls) and (gnu packages tls)
past/packages/statistics.scm:207:5: warning: possibly unbound variable `modify-inputs'
past/packages/statistics.scm:208:7: warning: possibly unbound variable `replace'
past/packages/statistics.scm:208:7: warning: possibly unbound variable `gfortran-7'
(values (value "/gnu/store/gpblpazmcv063lj3687hfr9kmh8f5zgd-guix-past/share/guile/site/3.0"))
building path(s) `/gnu/store/vczi3b5zs7w9mya7brxhjhk9zkag1pg7-ca-certificate-bundle'
building path(s) `/gnu/store/0pscrr4angczarknbcdism989clb1sw6-emacs-subdirs'
building path(s) `/gnu/store/91k6wfgv5s2gsc29aqy3fhcyzhn5cahn-fonts-dir'
building path(s) `/gnu/store/b0h5ym0wqbnd1ygb0kp5fvg2zzci8ar9-info-dir'
building path(s) `/gnu/store/ggqkjkjjp37jks4jyvhanxz2k9ckx021-profile'
building path(s) `/gnu/store/52bk7zfzpcmzg2d7kd090k76gsifg56q-inferior-script.scm'
building path(s) `/gnu/store/5avj4kq6gsvyv4h8wd907wa0ap2wrvid-guix-package-cache'
(repl-version 0 1 1)
Generating package cache for '/gnu/store/ggqkjkjjp37jks4jyvhanxz2k9ckx021-profile'...
guix repl: package 'python' has been superseded by 'python2'
guix repl: package 'python' has been superseded by 'python2'
WARNING: (past packages web): `openssl-1.0' imported from both (past packages tls) and (gnu packages tls)
WARNING: (past packages python): `openssl-1.0' imported from both (gnu packages tls) and (past packages tls)
guix repl: warning: ambiguous package specification `openssl@1.0'
guix repl: warning: choosing openssl@1.0.2u from gnu/packages/tls.scm:426:2
(exception unbound-variable (value #f) (value "Unbound variable: ~S") (value (modify-inputs)) (value #f))
builder for `/gnu/store/sbk2jy7d56zir90lypnv88b0mr6q7np2-guix-package-cache.drv' failed to produce output path `/gnu/store/5avj4kq6gsvyv4h8wd907wa0ap2wrvid-guix-package-cache'
cannot build derivation `/gnu/store/4mc2wphij4172ck8mwx3bf0wff877py3-profile.drv': 1 dependencies couldn't be built
Backtrace:
In ice-9/boot-9.scm:
  1752:10 14 (with-exception-handler _ _ #:unwind? _ # _)
In unknown file:
          13 (apply-smob/0 #<thunk 7effdaea9020>)
In ice-9/boot-9.scm:
    724:2 12 (call-with-prompt _ _ #<procedure default-prompt-handle?>)
In ice-9/eval.scm:
    619:8 11 (_ #(#(#<directory (guile-user) 7effdaeb2c80>)))
In cuirass/ui.scm:
   104:10 10 (run-cuirass-command _ . _)
In ice-9/boot-9.scm:
    152:2  9 (with-fluid* _ _ _)
    152:2  8 (with-fluid* _ _ _)
In ice-9/eval.scm:
   293:34  7 (_ #(#(#(#(#(#(#(#<directory (cuiras?> ?)) ?) ?) ?) ?) ?))
In ice-9/boot-9.scm:
  1752:10  6 (with-exception-handler _ _ #:unwind? _ # _)
In guix/store.scm:
   658:37  5 (thunk)
  2119:24  4 (run-with-store #<store-connection 256.99 7effd15f9230> ?)
In unknown file:
           3 (_ #<procedure 7effaf50d300 at ice-9/eval.scm:330:13 ()> ?)
In guix/store.scm:
  1991:38  2 (_ #<store-connection 256.99 7effb2832550>)
  1417:15  1 (_ #<store-connection 256.99 7effb2832550> _ _)
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/4mc2wphij4172ck8mwx3bf0wff877py3-profile.drv' failed"
      status: 1