Hi,
It works for me:
$ guix build rust
substitute: looking for substitutes on 'https://bordeaux.guix.gnu.org'... 100.0%
106.0 MB will be downloaded:
/gnu/store/6d5sfj7arabn0njyjkllwcjbk79kklhi-rust-1.82.0-cargo
/gnu/store/vfwc2l3cladl5crmgapnris2lpv6zbx7-rust-1.82.0
/gnu/store/manlpmb5zvcv1c49gs13m5alkkvqhcfq-rust-1.82.0-rust-src
/gnu/store/aab1x3n7iic8nm6wq3djap4pdl368m7j-rust-1.82.0-tools
$ find /gnu/store/a8a670gmxlbbkwn9k3jg5fg07nlpiwlr-rust-1.82.0 |grep rust-gdb
/gnu/store/a8a670gmxlbbkwn9k3jg5fg07nlpiwlr-rust-1.82.0/bin/rust-gdbgui
/gnu/store/a8a670gmxlbbkwn9k3jg5fg07nlpiwlr-rust-1.82.0/bin/rust-gdb
$ find /gnu/store/a8a670gmxlbbkwn9k3jg5fg07nlpiwlr-rust-1.82.0 |grep rust-lldb
/gnu/store/a8a670gmxlbbkwn9k3jg5fg07nlpiwlr-rust-1.82.0/bin/rust-lldb
