The files
 * /usr/share/cargo/registry/grass_compiler-0.13.4/.cargo-checksum.json
 * /usr/share/cargo/registry/grass_compiler-0.13.4/Cargo.toml
 * /usr/share/cargo/registry/grass_compiler-0.13.4/input.scss
 * /usr/share/cargo/registry/grass_compiler-0.13.4/README.md
 * /usr/share/cargo/registry/grass_compiler-0.13.4/src/ast/args.rs
 * /usr/share/cargo/registry/grass_compiler-0.13.4/src/ast/css.rs
 * /usr/share/cargo/registry/grass_compiler-0.13.4/src/ast/expr.rs
 * /usr/share/cargo/registry/grass_compiler-0.13.4/src/ast/interpolation.rs
 * /usr/share/cargo/registry/grass_compiler-0.13.4/src/ast/media.rs
 * /usr/share/cargo/registry/grass_compiler-0.13.4/src/ast/mixin.rs
 * /usr/share/cargo/registry/grass_compiler-0.13.4/src/ast/mod.rs
 * /usr/share/cargo/registry/grass_compiler-0.13.4/src/ast/stmt.rs
 * /usr/share/cargo/registry/grass_compiler-0.13.4/src/ast/style.rs
 * /usr/share/cargo/registry/grass_compiler-0.13.4/src/ast/unknown.rs
 * /usr/share/cargo/registry/grass_compiler-0.13.4/src/builtin/functions/color/hsl.rs
 * /usr/share/cargo/registry/grass_compiler-0.13.4/src/builtin/functions/color/hwb.rs
 * /usr/share/cargo/registry/grass_compiler-0.13.4/src/builtin/functions/color/mod.rs
 * /usr/share/cargo/registry/grass_compiler-0.13.4/src/builtin/functions/color/opacity.rs
 * /usr/share/cargo/registry/grass_compiler-0.13.4/src/builtin/functions/color/other.rs
 * /usr/share/cargo/registry/grass_compiler-0.13.4/src/builtin/functions/color/rgb.rs
 * /usr/share/cargo/registry/grass_compiler-0.13.4/src/builtin/functions/list.rs
 * /usr/share/cargo/registry/grass_compiler-0.13.4/src/builtin/functions/map.rs
 * /usr/share/cargo/registry/grass_compiler-0.13.4/src/builtin/functions/math.rs
 * /usr/share/cargo/registry/grass_compiler-0.13.4/src/builtin/functions/meta.rs
 * /usr/share/cargo/registry/grass_compiler-0.13.4/src/builtin/functions/mod.rs
 * /usr/share/cargo/registry/grass_compiler-0.13.4/src/builtin/functions/selector.rs
 * /usr/share/cargo/registry/grass_compiler-0.13.4/src/builtin/functions/string.rs
 * /usr/share/cargo/registry/grass_compiler-0.13.4/src/builtin/mod.rs
 * /usr/share/cargo/registry/grass_compiler-0.13.4/src/builtin/modules/color.rs
 * /usr/share/cargo/registry/grass_compiler-0.13.4/src/builtin/modules/list.rs
 * /usr/share/cargo/registry/grass_compiler-0.13.4/src/builtin/modules/map.rs
 * /usr/share/cargo/registry/grass_compiler-0.13.4/src/builtin/modules/math.rs
 * /usr/share/cargo/registry/grass_compiler-0.13.4/src/builtin/modules/meta.rs
 * /usr/share/cargo/registry/grass_compiler-0.13.4/src/builtin/modules/mod.rs
 * /usr/share/cargo/registry/grass_compiler-0.13.4/src/builtin/modules/selector.rs
 * /usr/share/cargo/registry/grass_compiler-0.13.4/src/builtin/modules/string.rs
 * /usr/share/cargo/registry/grass_compiler-0.13.4/src/color/mod.rs
 * /usr/share/cargo/registry/grass_compiler-0.13.4/src/color/name.rs
 * /usr/share/cargo/registry/grass_compiler-0.13.4/src/common.rs
 * /usr/share/cargo/registry/grass_compiler-0.13.4/src/context_flags.rs
 * /usr/share/cargo/registry/grass_compiler-0.13.4/src/error.rs
 * /usr/share/cargo/registry/grass_compiler-0.13.4/src/evaluate/bin_op.rs
 * /usr/share/cargo/registry/grass_compiler-0.13.4/src/evaluate/css_tree.rs
 * /usr/share/cargo/registry/grass_compiler-0.13.4/src/evaluate/env.rs
 * /usr/share/cargo/registry/grass_compiler-0.13.4/src/evaluate/mod.rs
 * /usr/share/cargo/registry/grass_compiler-0.13.4/src/evaluate/scope.rs
 * /usr/share/cargo/registry/grass_compiler-0.13.4/src/evaluate/visitor.rs
 * /usr/share/cargo/registry/grass_compiler-0.13.4/src/fs.rs
 * /usr/share/cargo/registry/grass_compiler-0.13.4/src/interner.rs
 * /usr/share/cargo/registry/grass_compiler-0.13.4/src/lexer.rs
 * /usr/share/cargo/registry/grass_compiler-0.13.4/src/lib.rs
 * /usr/share/cargo/registry/grass_compiler-0.13.4/src/logger.rs
 * /usr/share/cargo/registry/grass_compiler-0.13.4/src/options.rs
 * /usr/share/cargo/registry/grass_compiler-0.13.4/src/parse/at_root_query.rs
 * /usr/share/cargo/registry/grass_compiler-0.13.4/src/parse/base.rs
 * /usr/share/cargo/registry/grass_compiler-0.13.4/src/parse/css.rs
 * /usr/share/cargo/registry/grass_compiler-0.13.4/src/parse/keyframes.rs
 * /usr/share/cargo/registry/grass_compiler-0.13.4/src/parse/media_query.rs
 * /usr/share/cargo/registry/grass_compiler-0.13.4/src/parse/mod.rs
 * /usr/share/cargo/registry/grass_compiler-0.13.4/src/parse/sass.rs
 * /usr/share/cargo/registry/grass_compiler-0.13.4/src/parse/scss.rs
 * /usr/share/cargo/registry/grass_compiler-0.13.4/src/parse/stylesheet.rs
 * /usr/share/cargo/registry/grass_compiler-0.13.4/src/parse/value.rs
 * /usr/share/cargo/registry/grass_compiler-0.13.4/src/selector/attribute.rs
 * /usr/share/cargo/registry/grass_compiler-0.13.4/src/selector/common.rs
 * /usr/share/cargo/registry/grass_compiler-0.13.4/src/selector/complex.rs
 * /usr/share/cargo/registry/grass_compiler-0.13.4/src/selector/compound.rs
 * /usr/share/cargo/registry/grass_compiler-0.13.4/src/selector/extend/extended_selector.rs
 * /usr/share/cargo/registry/grass_compiler-0.13.4/src/selector/extend/extension.rs
 * /usr/share/cargo/registry/grass_compiler-0.13.4/src/selector/extend/functions.rs
 * /usr/share/cargo/registry/grass_compiler-0.13.4/src/selector/extend/merged.rs
 * /usr/share/cargo/registry/grass_compiler-0.13.4/src/selector/extend/mod.rs
 * /usr/share/cargo/registry/grass_compiler-0.13.4/src/selector/extend/rule.rs
 * /usr/share/cargo/registry/grass_compiler-0.13.4/src/selector/list.rs
 * /usr/share/cargo/registry/grass_compiler-0.13.4/src/selector/mod.rs
 * /usr/share/cargo/registry/grass_compiler-0.13.4/src/selector/parse.rs
 * /usr/share/cargo/registry/grass_compiler-0.13.4/src/selector/simple.rs
 * /usr/share/cargo/registry/grass_compiler-0.13.4/src/serializer.rs
 * /usr/share/cargo/registry/grass_compiler-0.13.4/src/unit/conversion.rs
 * /usr/share/cargo/registry/grass_compiler-0.13.4/src/unit/mod.rs
 * /usr/share/cargo/registry/grass_compiler-0.13.4/src/utils/chars.rs
 * /usr/share/cargo/registry/grass_compiler-0.13.4/src/utils/map_view.rs
 * /usr/share/cargo/registry/grass_compiler-0.13.4/src/utils/mod.rs
 * /usr/share/cargo/registry/grass_compiler-0.13.4/src/utils/strings.rs
 * /usr/share/cargo/registry/grass_compiler-0.13.4/src/value/arglist.rs
 * /usr/share/cargo/registry/grass_compiler-0.13.4/src/value/calculation.rs
 * /usr/share/cargo/registry/grass_compiler-0.13.4/src/value/map.rs
 * /usr/share/cargo/registry/grass_compiler-0.13.4/src/value/mod.rs
 * /usr/share/cargo/registry/grass_compiler-0.13.4/src/value/number.rs
 * /usr/share/cargo/registry/grass_compiler-0.13.4/src/value/sass_function.rs
 * /usr/share/cargo/registry/grass_compiler-0.13.4/src/value/sass_number.rs
are contained in the packages
 * librust-grass-compiler-dev/0.13.4-1 as present in unstable
 * librust-grass-dev/0.13.4-2 as present in unstable

These packages can be unpacked concurrently, because there is no
relevant Replaces or Conflicts relation.  Attempting to unpack these
packages concurrently results in an unpack error from dpkg, because none
of the packages installs a diversion for the affected files.

Please determine the appropriate metadata for the mentioned files and
reassign and/or clone the bug to the packages that require changes.
When doing so, please add the other package to the set of affected
packages using "Control: affects -1 + <packagename>" to avoid the filing
of duplicates.

Kind regards

Helmut Grohne

Quoting Helmut Grohne (2026-04-30 07:00:29)
[...]

I dare reassign this bug to librust-grass-compiler-dev, since
librust-grass-dev that virtually provides librust-grass-compiler-dev
was introduced into Debian few days ago and has been in the works for
more than a year (see bug#1093767).

I am sorry for the wasted duplication of efforts, and I dearly
encourage the use of ITP bugreports to signal such preliminary work to
avoid such frustrating situations.

Kind regards,

 - Jonas