cuirass: Fail to fetch "guix" input.

2020-10-02T11:54:09 fatal: uncaught exception 'misc-error' in 'build' fiber!

2020-10-02T11:54:09 exception arguments: (#f "Attempt to suspend fiber within continuation barrier" () #f)

In ice-9/boot-9.scm:

1731:15 13 (with-exception-handler #<procedure 7f4eb362df60 at ic?> ?)

1736:10 12 (with-exception-handler _ _ #:unwind? _ # _)

152:2 11 (with-fluid* _ _ _)

718:2 10 (call-with-prompt ("break") #<procedure 7f4eb76adb60 a?> ?)

718:2 9 (call-with-prompt ("continue") #<procedure 7f4eb76ad14?> ?)

In ice-9/eval.scm:

619:8 8 (_ #(#(#<directory (guile-user) 7f4eb72d7f00> #<var?> ?)))

In srfi/srfi-1.scm:

634:9 7 (for-each #<procedure 7f4eb3750660 at cuirass/base.scm?> ?)

In ice-9/boot-9.scm:

1731:15 6 (with-exception-handler #<procedure 7f4eb3673ba0 at ic?> ?)

1669:16 5 (raise-exception _ #:continuable? _)

1764:13 4 (_ #<&compound-exception components: (#<&error> #<&orig?>)

In cuirass/utils.scm:

240:8 3 (_ _ . _)

In ice-9/boot-9.scm:

1731:15 2 (with-exception-handler #<procedure 7f4eb7616480 at ic?> ?)

In cuirass/utils.scm:

241:22 1 (_)

In unknown file:

0 (make-stack #t)

ERROR: In procedure make-stack:

Attempt to suspend fiber within continuation barrier

(define manifest

'((#:name . "my-manifest")

(#:load-path-inputs . ("guix"))

(#:package-path-inputs . ())

(#:proc-input . "guix")

(#:proc-file . "build-aux/cuirass/gnu-system.scm")

(#:proc . cuirass-jobs)

(#:proc-args (subset . "all"))

(#:inputs . (((#:name . "guix")

(#:url . "git://git.savannah.gnu.org/guix.git")

(#:load-path . ".")

(#:branch . "master")

(#:no-compile? . #t))

((#:name . "guix2")

(#:url . "git://git.savannah.gnu.org/guix.git")

(#:load-path . ".")

(#:branch . "master")

(#:no-compile? . #t))))

(#:build-outputs . ())))

(list manifest)