bug#25894: another guix system reconfigure /etc/config.scm

[Quiliro]

substitute: updating list of substitutes from 'https://mirror.hydra.gnu.org'... 
substitute: updating list of substitutes from 'https://mirror.hydra.gnu.org'... 
100.0%
substitute: updating list of substitutes from 'https://mirror.hydra.gnu.org'... 
substitute: updating list of substitutes from 'https://mirror.hydra.gnu.org'... 
100.0%
substitute: updating list of substitutes from 'https://mirror.hydra.gnu.org'... 
substitute: updating list of substitutes from 'https://mirror.hydra.gnu.org'... 
substitute: updating list of substitutes from 'https://mirror.hydra.gnu.org'... 
100.0%
substitute: updating list of substitutes from 'https://mirror.hydra.gnu.org'... 
substitute: updating list of substitutes from 'https://mirror.hydra.gnu.org'... 
100.0%
substitute: updating list of substitutes from 'https://mirror.hydra.gnu.org'... 
  0.0%Backtrace:
substitute: In ice-9/boot-9.scm:
substitute:  160: 9 [catch #t #<catch-closure 84e45e0> ...]
substitute: In unknown file:
substitute:    ?: 8 [apply-smob/1 #<catch-closure 84e45e0>]
substitute: In ice-9/boot-9.scm:
substitute:   66: 7 [call-with-prompt prompt0 ...]
substitute: In ice-9/eval.scm:
substitute:  432: 6 [eval # #]
substitute: In ice-9/boot-9.scm:
substitute: 2404: 5 [save-module-excursion #<procedure 84f6c80 at 
ice-9/boot-9.scm:4051:3 ()>]
substitute: 4056: 4 [#<procedure 84f6c80 at ice-9/boot-9.scm:4051:3 ()>]
substitute: 1727: 3 [%start-stack load-stack ...]
substitute: 1732: 2 [#<procedure 84fd570 ()>]
substitute: In unknown file:
substitute:    ?: 1 [primitive-load 
"/gnu/store/c77gfhkmnwjvgmnsafjxf1g9kkpiilbh-guix-0.12.0-4.d9da/bin/.guix-real"]
substitute: In guix/ui.scm:
substitute: 1228: 0 [run-guix-command substitute "--query"]
substitute: 
substitute: guix/ui.scm:1228:8: In procedure run-guix-command:
substitute: guix/ui.scm:1228:8: Bad Read-Header-Line header: #<eof>
substitute: 
guix system: error: build failed: substituter `substitute' died unexpectedly

-- 
Saluton,
Quiliro
0987631031