Updating channel 'nonguix' from Git repository at 'https://github.com/nonguix/nonguix'...
guix pull: warning: pulled channel 'nonguix' from a mirror of https://gitlab.com/nonguix/nonguix, which might be stale
Updating channel 'guix' from Git repository at 'https://git.savannah.gnu.org/git/guix.git'...
Building from these channels:
  guix      https://git.savannah.gnu.org/git/guix.git	ca831df
  nonguix   https://github.com/nonguix/nonguix	3ae6f63
Computing Guix derivation for 'x86_64-linux'...  ..
guix substitute: warning: while fetching https://ci.guix.gnu.org/nar/lzip/mzz11jzk3ag1nzzzdg83kmgysm5faijd-texlive-babel-fixed-59745: server is somewhat slow
guix substitute: warning: try `--no-substitutes' if the problem persists
guix substitute: error: connect*: Connection timed out
Backtrace:
          15 (primitive-load "/gnu/store/5vyp6iikbi82l2sb394bp8hikk8hxfi6-compute-guix-derivation")
In ice-9/eval.scm:
    155:9 14 (_ _)
    159:9 13 (_ #(#(#(#(#(#(#(#(#(#(#(#(#(#(#(#(#<directory (guile-u?> ?) ?) ?) ?) ?) ?) ?) ?) ?) ?) ?) ?) ?) ?) ?) ?))
In ice-9/boot-9.scm:
    152:2 12 (with-fluid* _ _ _)
    152:2 11 (with-fluid* _ _ _)
In ./guix/store.scm:
  2129:24 10 (run-with-store #<store-connection 256.99 7fb3ea222410> #<procedure 7fb3d58c7320 at ./guix/self.scm:12?> ?)
   1966:8  9 (_ #<store-connection 256.99 7fb3ea222410>)
In ./guix/gexp.scm:
   299:22  8 (_ #<store-connection 256.99 7fb3ea222410>)
   1180:2  7 (_ #<store-connection 256.99 7fb3d023d1e0>)
   1046:2  6 (_ #<store-connection 256.99 7fb3d023d1e0>)
    892:4  5 (_ #<store-connection 256.99 7fb3d023d1e0>)
In ./guix/store.scm:
  2014:12  4 (_ #<store-connection 256.99 7fb3d023d1e0>)
  1410:13  3 (map/accumulate-builds #<store-connection 256.99 7fb3d023d1e0> #<procedure 7fb3e02e8e40 at ./guix/stor?> ?)
   1406:5  2 (map/accumulate-builds #<store-connection 256.99 7fb3d023d1e0> #<procedure 7fb3ea5d4750 at ./guix/stor?> ?)
  1421:15  1 (_ #<store-connection 256.99 7fb3d023d1e0> ("/gnu/store/83xdx71808aki3p6xkbv9xdly3nl86wc-texlive-babe?") ?)
  1421:15  0 (loop #f)

./guix/store.scm:1421:15: In procedure loop:
ERROR:
  1. &store-protocol-error:
      message: "some substitutes for the outputs of derivation `/gnu/store/83xdx71808aki3p6xkbv9xdly3nl86wc-texlive-babel-fixed-59745.drv' failed (usually happens due to networking issues); try `--fallback' to build derivation from source "
      status: 1
guix pull: error: You found a bug: the program '/gnu/store/5vyp6iikbi82l2sb394bp8hikk8hxfi6-compute-guix-derivation'
failed to compute the derivation for Guix (version: "ca831dfa09a50201c7588124d67e5c381406b396"; system: "x86_64-linux";
host version: "1.3.0-24.2fb4304"; pull-version: 1).
Please report the COMPLETE output above by email to <bug-guix@gnu.org>.