Version 1.1.4.3+dfsg-1 of r-cran-treespace is marked for autoremoval from testing on Tue 22 Apr 2025. It depends (transitively) on r-cran-vegan, affected by #1099926. You should try to prevent the removal by fixing these RC bugs.
source package has 2 unsatisfiable build dependencies
high
2 binary packages have unsatisfiable dependencies
high
The dependencies of r-cran-treespace=1.1.4.3+dfsg-1 cannot be satisfied in unstable on
amd64, mips64el, s390x, armhf, armel, ppc64el, and i386
because: unsatisfied dependency on libtbb12 (< 2022.0.0-99)