bug#43012: Scroll fails to produce expected output directory

[Jesse Gibbons]

Run "guix build scroll" -- after completing all steps it outputs 
"builder for 
`/gnu/store/r35sa0d9fnp22y0jgzk810yyhn8d7lrl-scroll-1.20180421.drv' 
failed to produce output path 
`/gnu/store/1q7aj03p7f0nk7dmdyp3lfscizywdr4m-scroll-1.20180421-static'"

I ran "guix edit scroll" and saw it doesn't do anything fancy with the 
phases or the source. Perhaps there's something wrong with the package's 
install process that needs correction?

See attached log.

guix describe:

Generation 267    Aug 21 2020 10:11:46    (current)
  guix c02398e
    repository URL: https://git.savannah.gnu.org/git/guix.git
    branch: master
    commit: c02398edf43c393b858d57c7b9e4839514f85acb

5sa0d9fnp22y0jgzk810yyhn8d7lrl-scroll-1.20180421.drv.bz2
Description: Binary data