devel/scons causes segfault in pkg on downgrade

[dstolfa]

When downgrading from FreeBSD ports main to an earlier quarter, e.g. 2020Q4 with devel/scons installed (called scons-py38) and running the downgrade, I get the following behaviour:

root@repropkg:~ # pkg upgrade -f
Updating FreeBSD repository catalogue...
pkg: http://repropkg-build/packages/13x64-old/packagesite.pkg: Not Found
FreeBSD repository is up to date.
All repositories are up to date.
Checking for upgrades (9 candidates):  11%
(null) has no direct installation candidates, change it to scons-py37? [Y/n]: y
Child process pid=1151 terminated abnormally: Segmentation fault

The steps to reproduce are:

(1) Build with poudriere from poudriere ports -c -p main -m git+https -B main (2) pkg install -g 'scons*' from the main branch (3) Build with poudriere from poudriere ports -c -p old -m git+https -B 2020Q4 (4) pkg upgrade -f when the repository is set to install from the old ports tree (2020Q4).

The only port that needs to be built is devel/scons. I have been able to reproduce this both on 13.0-RELEASE and 14-CURRENT.

The commit of main this was tested on is 77fa61df485e30e5fa5f10dff5bac906a89d303b

[Sp1l]

Similar behavior here

# pkg upg -f
Updating myrepo repository catalogue...
myrepo repository is up to date.
All repositories are up to date.
Checking for upgrades (185 candidates):  71%
(null) has no direct installation candidates, change it to libnghttp2? [Y/n]:
Child process pid=63127 terminated abnormally: Segmentation fault

Haven't switched repos, have switched libcrypto to a newer version