Today, this package builds ok again. Unfortunately, debbisect shows too many changes (see below), and I don't know which which one would be a good candidate for a reassign.
I wonder if this was a side effect of some transition. Thanks. bisection finished successfully last bad timestamp: 20260503T083940Z first good timestamp: 20260503T150742Z the following packages differ between the last bad and first good timestamp: librust-allocator-api2-dev:amd64 0.2.21-1 -> 0.2.21-1+b1 librust-anstream-dev:amd64 0.6.21-1 -> 0.6.21-1+b1 librust-anstyle-parse-dev:amd64 0.2.7-1 -> 0.2.7-1+b1 librust-anstyle-query-dev:amd64 1.1.4-1 -> 1.1.4-1+b1 librust-arbitrary-dev:amd64 1.4.2-1 -> 1.4.2-1+b1 librust-atk-0.18-dev:amd64 0.18.0-2 -> 0.18.0-2+b1 librust-atk-sys-0.18-dev:amd64 0.18.0-3 -> 0.18.0-3+b1 librust-autocfg-dev:amd64 1.5.0-1 -> 1.5.0-1+b1 librust-bytemuck-derive-dev:amd64 1.10.2-2 -> 1.10.2-2+b1 librust-cairo-rs-0.18-dev:amd64 0.18.5-4 -> 0.18.5-4+b1 librust-cairo-sys-rs-0.18-dev:amd64 0.18.2-2 -> 0.18.2-2+b1 librust-cfg-expr-dev:amd64 0.18.0-1 -> 0.18.0-1+b1 librust-cfg-if-dev:amd64 1.0.4-1 -> 1.0.4-1+b1 librust-critical-section-dev:amd64 1.2.0-1 -> 1.2.0-1+b1 librust-crossbeam-deque-dev:amd64 0.8.6-1 -> 0.8.6-1+b1 librust-crossbeam-epoch+std-dev:amd64 0.9.18-1 -> 0.9.18-1+b1 librust-crossbeam-epoch-dev:amd64 0.9.18-1 -> 0.9.18-1+b1 librust-crossbeam-utils-dev:amd64 0.8.21-1 -> 0.8.21-1+b1 librust-derive-arbitrary-dev:amd64 1.4.2-1 -> 1.4.2-1+b1 librust-either-dev:amd64 1.15.0-1 -> 1.15.0-1+b1 librust-erased-serde-dev:amd64 0.3.31-1 -> 0.3.31-1+b1 librust-field-offset-dev:amd64 0.3.6-1 -> 0.3.6-1+b1 librust-foldhash-dev:amd64 0.2.0-2 -> 0.2.0-2+b1 librust-freetype-rs-dev:amd64 0.36.0-2 -> 0.36.0-2+b1 librust-freetype-sys-dev:amd64 0.20.1-1 -> 0.20.1-1+b1 librust-gdk-0.18-dev:amd64 0.18.0-2 -> 0.18.0-2+b1 librust-gdk-pixbuf-0.18-dev:amd64 0.18.5-2 -> 0.18.5-2+b1 librust-gdk-sys-0.18-dev:amd64 0.18.0-2 -> 0.18.0-2+b1 librust-gio-0.18-dev:amd64 0.18.4-4 -> 0.18.4-4+b1 librust-glib-0.18-dev:amd64 0.18.5-6 -> 0.18.5-6+b1 librust-glib-macros-0.18-dev:amd64 0.18.2-2 -> 0.18.2-2+b1 librust-glib-sys-0.18-dev:amd64 0.18.1-3 -> 0.18.1-3+b1 librust-gobject-sys-0.18-dev:amd64 0.18.0-3 -> 0.18.0-3+b1 librust-gtk-0.18-dev:amd64 0.18.1-2 -> 0.18.1-2+b1 librust-gtk-sys-0.18-dev:amd64 0.18.0-2 -> 0.18.0-2+b1 librust-hashbrown-dev:amd64 0.16.1-2 -> 0.16.1-2+b1 librust-heck-dev:amd64 0.5.0-1+really0.5.0-2 -> 0.5.0-1+really0.5.0-2+b1 librust-itoa-dev:amd64 1.0.15-1 -> 1.0.15-1+b1 librust-jobserver-dev:amd64 0.1.32-1 -> 0.1.32-1+b1 librust-libc-dev:amd64 0.2.178-2 -> 0.2.178-2+b1 librust-libhandy-sys-0.11-dev:amd64 0.11.1-2 -> 0.11.1-2+b1 librust-libphosh-sys-dev:amd64 0.0.7-3 -> 0.0.7-3+b1 librust-log-dev:amd64 0.4.29-1 -> 0.4.29-1+b1 ----- End forwarded message -----

