you're receiving this canned bug because the package in summary uses the flag -Werror during build, which transforms warnings in errors, and is prone to break software when new GCC releases are added to Gentoo.
Please make sure your package does not use -Werror during build, so that it can be more future-proof for the new GCC releases.
Patched this in bug 262765.
Created attachment 193463 [details]
WTF nstx is masked for removal?!
See bug 262765, it compiles with -D_FORTIFY_SOURCE=2 (default for Gentoo) and nstx-1.1_beta6-r3 works OK for me.
-Werror is not at issue for removal.
-Werror alone is not an issue for removal.
-Werror causing _FORTIFY_SOURCE build failures which are not fixed after nine months is enough of a reason for removal.
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ebuild is fixed.