First "guix pull" after the first time ever succussfull install

substitute: updating substitutes from 'https://ci.guix.gnu.org'... 100.0%
-Backtrace: updating substitutes from 'https://bordeaux.guix.gnu.org'...   0.0%
          16 (primitive-load "/gnu/store/s8l570wfwah4nxhp9qj9n52k1gzgn430-compute-guix-derivation")
In ice-9/eval.scm:
    155:9 15 (_ _)
    159:9 14 (_ #(#(#(#(#(#(#(#(#(#(#(#(#(#(#(#(#<directory (guile-u?> ?) ?) ?) ?) ?) ?) ?) ?) ?) ?) ?) ?) ?) ?) ?) ?))
In ice-9/boot-9.scm:
    152:2 13 (with-fluid* _ _ _)
    152:2 12 (with-fluid* _ _ _)
In guix/store.scm:
  2210:24 11 (run-with-store #<store-connection 256.100 7f11352110a0> #<procedure 7f111caabc80 at guix/self.scm:136?> ?)
   2038:8 10 (_ #<store-connection 256.100 7f11352110a0>)
In guix/gexp.scm:
   300:22  9 (_ #<store-connection 256.100 7f11352110a0>)
   1218:2  8 (_ #<store-connection 256.100 7f11352110a0>)
   1085:2  7 (_ #<store-connection 256.100 7f11352110a0>)
    926:4  6 (_ #<store-connection 256.100 7f11352110a0>)
In guix/store.scm:
  2095:12  5 (_ #<store-connection 256.100 7f11352110a0>)
  1437:13  4 (map/accumulate-builds #<store-connection 256.100 7f11352110a0> #<procedure 7f111eb58be0 at guix/store?> ?)
  1437:13  3 (map/accumulate-builds #<store-connection 256.100 7f11352110a0> #<procedure 7f111209a1c0 at guix/store?> ?)
   1433:5  2 (map/accumulate-builds #<store-connection 256.100 7f11352110a0> #<procedure 7f111243bae0 at guix/store?> ?)
  1449:15  1 (_ #<store-connection 256.100 7f11352110a0> ("/gnu/store/9gya7vrs7p2h6p07clw778l1kiysswss-guix-daem?" ?) ?)
  1449:15  0 (loop #f)

guix/store.scm:1449:15: In procedure loop:
ERROR:
  1. &store-protocol-error:
      message: "`/gnu/store/ac6ymva3ka4gqmjiqsqld068bg1ghgcn-guix-1.4.0-30.790c9ff/bin/guix substitute' died unexpectedly"
      status: 1
guix pull: error: You found a bug: the program '/gnu/store/s8l570wfwah4nxhp9qj9n52k1gzgn430-compute-guix-derivation'
failed to compute the derivation for Guix (version: "db843db3d1b456afc5ca0cbbf9f6f3472dba05ba"; system: "x86_64-linux";
host version: "1.4.0-30.790c9ff"; pull-version: 1).
Please report the COMPLETE output above by email to <bug-[email protected]>.