bug#58309: [BUG Report] found a bug?

[Frank Pursel]

Dutifully reporting the output from today's 'guix pull':

 gnutls-3.7.2-doc  1.0MiB 659KiB/s 00:01 [###############   ]  84.1-Backtrace:
          18 (primitive-load 
"/gnu/store/8b0z5hm1kxha84g367yfshxjf1q4kka2-compute-guix-derivation")
In ice-9/eval.scm:
    155:9 17 (_ _)
    159:9 16 (_ #(#(#(#(#(#(#(#(#(#(#(#(#(#(#(#(#<directory (guile-u?> ?) ?) ?) 
?) ?) ?) ?) ?) ?) ?) ?) ?) ?) ?) ?) ?))
In ice-9/boot-9.scm:
    152:2 15 (with-fluid* _ _ _)
    152:2 14 (with-fluid* _ _ _)
In ./guix/store.scm:
  2165:24 13 (run-with-store #<store-connection 256.99 7fd346645140> 
#<procedure 7fd330be14b0 at ./guix/self.scm:12?> ?)
   1993:8 12 (_ #<store-connection 256.99 7fd346645140>)
In ./guix/gexp.scm:
   300:22 11 (_ #<store-connection 256.99 7fd346645140>)
   1181:2 10 (_ #<store-connection 256.99 7fd32ddcae10>)
   1047:2  9 (_ #<store-connection 256.99 7fd32ddcae10>)
    893:4  8 (_ #<store-connection 256.99 7fd32ddcae10>)
In ./guix/store.scm:
  2050:12  7 (_ #<store-connection 256.99 7fd32ddcae10>)
  1402:13  6 (map/accumulate-builds #<store-connection 256.99 7fd32ddcae10> 
#<procedure 7fd33b44bc80 at ./guix/stor?> ?)
   1398:5  5 (map/accumulate-builds #<store-connection 256.99 7fd32ddcae10> 
#<procedure 7fd32cf8c060 at ./guix/stor?> ?)
  1414:15  4 (_ #<store-connection 256.99 7fd32ddcae10> 
("/gnu/store/b59p3465k0gfhl2zirjsx1n0sh7pnm08-guile-ssh-?" ?) ?)
  1414:15  3 (loop #f)
   708:11  2 (process-stderr #<store-connection 256.99 7fd32ddcae10> _)
In ./guix/serialization.scm:
   102:11  1 (read-int #<input-output: file 10>)
     80:6  0 (get-bytevector-n* #<input-output: file 10> 8)

./guix/serialization.scm:80:6: In procedure get-bytevector-n*:
ERROR:
  1. &nar-error:
      file: #f
      port: #<input-output: file 10>
guix pull: error: You found a bug: the program 
'/gnu/store/8b0z5hm1kxha84g367yfshxjf1q4kka2-compute-guix-derivation'
failed to compute the derivation for Guix (version: 
"be1d561f1a74d158d67623bf037727918781bd96"; system: "x86_64-linux";
host version: "e6777cfa5eb5e9c36eaf7810b42cac0fbcaa367c"; pull-version: 1).
Please report the COMPLETE output above by email to <bug-guix@gnu.org>.