bug#41595: time-machine failure

[Ludovic Courtès]

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$ guix time-machine --commit=ab0ede51c041927a1c35535aec3504f84d7a9751 -- 
environment --ad-hoc hello -- hello
Updating channel 'guix' from Git repository at 
'https://git.savannah.gnu.org/git/guix.git'...
substitute: updating substitutes from 'https://ci.guix.gnu.org'... 100.0%
La jenaj derivoj estos konstruataj:
   /gnu/store/srb3liyzg9483ry5j1sdknkp2irzf6rm-compute-guix-derivation.drv
   /gnu/store/92nj92vkk6galkw0kikxy2fzs9n7rr27-module-import-compiled.drv
   /gnu/store/g14w05zd4lhc4qiqbcmrqznkhh4g9x06-module-import.drv
building /gnu/store/g14w05zd4lhc4qiqbcmrqznkhh4g9x06-module-import.drv...
building 
/gnu/store/92nj92vkk6galkw0kikxy2fzs9n7rr27-module-import-compiled.drv...
building 
/gnu/store/srb3liyzg9483ry5j1sdknkp2irzf6rm-compute-guix-derivation.drv...
;;; WARNING: loading compiled file 
/gnu/store/63819s86xv37kps3v42qsfvw5flsay0z-module-import-compiled/guix/store.go
 failed:
;;; In procedure load-thunk-from-memory: incompatible bytecode kind
;;; WARNING: loading compiled file 
/gnu/store/63819s86xv37kps3v42qsfvw5flsay0z-module-import-compiled/guix/store.go
 failed:
;;; In procedure load-thunk-from-memory: incompatible bytecode kind
;;; WARNING: loading compiled file 
/gnu/store/63819s86xv37kps3v42qsfvw5flsay0z-module-import-compiled/guix/utils.go
 failed:
;;; In procedure load-thunk-from-memory: incompatible bytecode kind
;;; WARNING: loading compiled file 
/gnu/store/63819s86xv37kps3v42qsfvw5flsay0z-module-import-compiled/guix/utils.go
 failed:

[...]

Backtrace:
In ice-9/eval.scm:
   293:34 19 (_ #(#(#(#<directory (guix packages) 7ffa43f1c8c0> ?)) ?))
   293:34 18 (_ #(#(#(#(#<directory (guix packages) 7ffa43?>) ?) ?) ?))
In srfi/srfi-1.scm:
   592:17 17 (map1 (("source" #<origin "mirror://gnu/guile/guil?>) ?))
In ice-9/boot-9.scm:
    829:9 16 (catch srfi-34 #<procedure 7ffa384d1480 at ice-9/eval.?> ?)
In ice-9/eval.scm:
    159:9 15 (_ #(#(#<directory (guix packages) 7ffa43f1c8c0> "s?" ?)))
In ice-9/boot-9.scm:
    152:2 14 (with-fluid* _ _ _)
    152:2 13 (with-fluid* _ _ _)
    152:2 12 (with-fluid* _ _ _)
In unknown file:
          11 (_ #<procedure 7ffa384d5dc0 at ice-9/eval.scm:330:13 ()> ?)
          10 (_ #<procedure 7ffa38544800 at ice-9/eval.scm:330:13 ()> ?)
           9 (_ #<procedure 7ffa38005180 at ice-9/eval.scm:330:13 ()> ?)
           8 (_ #<procedure 7ffa37ce8420 at ice-9/eval.scm:330:13 ()> ?)
           7 (_ #<procedure 7ffa37d21440 at ice-9/eval.scm:330:13 ()> ?)
           6 (_ #<procedure 7ffa37d35340 at ice-9/eval.scm:330:13 ()> ?)
           5 (_ #<procedure 7ffa37d37ca0 at ice-9/eval.scm:330:13 ()> ?)
           4 (_ #<procedure 7ffa37d37c40 at ice-9/eval.scm:330:13 ()> ?)
In ice-9/eval.scm:
   191:27  3 (_ #(#(#<directory (guix store) 7ffa4631f960> #<pr?>) ?))
   196:35  2 (_ #(#(#(#<directory (guix store) 7ffa4631f960> ?) #) #))
   293:34  1 (_ #(#(#(#(#(#(#(#<directory (guix g?>) ?) ?) ?) ?) ?) ?))
In unknown file:
           0 (force #<promise #<procedure 7ffa44951ea0 at ice-9/eval?>)

ERROR: In procedure force:
In procedure canonicalize-path: No such file or directory: "build/utils.scm"
guix time-machine: error: You found a bug: the program 
'/gnu/store/hk4bcnsyb9fzviqh90768ss63q7cpmr2-compute-guix-derivation'
failed to compute the derivation for Guix (version: 
"ab0ede51c041927a1c35535aec3504f84d7a9751"; system: "x86_64-linux";
host version: "9744cc7b4636fafb772c94adb8f05961b5b39f16"; pull-version: 1).
Please report it by email to <bug-guix@gnu.org>.
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