Bug#1050415: Acknowledgement (PermissionError: [Errno 13] Permission denied)

[Mathieu Malaterre <malat@debian.org>]

For reference, creduce seems to be happy with the exact same settings:

 % creduce check.sh testcase.i
===< 150190 >===
running 3 interestingness tests in parallel
===< pass_unifdef :: 0 >===
===< pass_comments :: 0 >===
===< pass_ifs :: 0 >===
===< pass_includes :: 0 >===
===< pass_line_markers :: 0 >===
===< pass_blank :: 0 >===
===< pass_clang_binsrch :: replace-function-def-with-decl >===
(0.1 %, 4263044 bytes)
(0.2 %, 4260250 bytes)
(0.3 %, 4256026 bytes)
(0.4 %, 4252741 bytes)
(0.4 %, 4251437 bytes)
(0.4 %, 4249928 bytes)
(0.5 %, 4248101 bytes)
(0.5 %, 4246010 bytes)
(0.5 %, 4245334 bytes)
(0.6 %, 4244584 bytes)
(0.6 %, 4243457 bytes)
(0.6 %, 4242382 bytes)
(0.6 %, 4241737 bytes)
(0.6 %, 4240846 bytes)
(0.7 %, 4240150 bytes)
(0.7 %, 4239316 bytes)
(0.7 %, 4238448 bytes)
(0.7 %, 4237766 bytes)
(0.7 %, 4237353 bytes)
(0.7 %, 4236623 bytes)
[...]