dh compat 11 phaseout

This is something we could get done easily for trixie. compat 12 is close to 2000 packages so not really doable in time imo.

grep -E "^rust.*11$" debhelper-compat_unstable-packages.csv | cut -d, -f1

• rust-actix-derive
• rust-adler32
• rust-ansi-term
• rust-antidote
• rust-argon2rs
• rust-argparse
• rust-array-macro
• rust-atlatl
• rust-atty
• rust-base32
• rust-bitmaps
• rust-block
• rust-box-drawing
• rust-build-const
• rust-byte-tools
• rust-c2-chacha
• rust-cassowary
• rust-clicolors-control
• rust-cloudabi
• rust-colored-json
• rust-commoncrypto
• rust-commoncrypto-sys
• rust-content-inspector
• rust-core-foundation-sys
• rust-cpp-synom
• rust-cpuid-bool
• rust-crossterm-winapi
• rust-crypto-hash
• rust-cstr-argument
• rust-data-url
• rust-derive-new
• rust-difference
• rust-dirs-sys-next
• rust-discard
• rust-dogged
• rust-ena
• rust-encode-unicode
• rust-encoding
• rust-encoding-index-japanese
• rust-encoding-index-korean
• rust-encoding-index-simpchinese
• rust-encoding-index-singlebyte
• rust-encoding-index-tradchinese
• rust-endian-type
• rust-entities
• rust-enum-primitive
• rust-enum-to-u8-slice-derive
• rust-environment
• rust-epoll
• rust-error-chain
• rust-fake-simd
• rust-foreign-types
• rust-foreign-types-macros
• rust-foreign-types-shared
• rust-fs2
• rust-fsevent-sys
• rust-fuchsia-cprng
• rust-fuchsia-zircon
• rust-fuchsia-zircon-sys
• rust-fxhash
• rust-gettext
• rust-gtk-rs-lgpl-docs
• rust-hash
• rust-heapsize
• rust-hexyl
• rust-hidapi-sys
• rust-hyphenation
• rust-hyphenation-commons
• rust-ident-case
• rust-inflate
• rust-iovec
• rust-ipnetwork
• rust-is-match
• rust-jemalloc-sys
• rust-kvm-ioctls
• rust-libflate
• rust-libnghttp2-sys
• rust-libudev-sys
• rust-linear-map
• rust-lmdb
• rust-locale
• rust-loggerv
• rust-lru-cache
• rust-lua52-sys
• rust-lzw
• rust-mac
• rust-mach-o-sys
• rust-macro-attr
• rust-matches
• rust-md5
• rust-memmap
• rust-mio-named-pipes
• rust-mio-uds
• rust-natord
• rust-nitrocli
• rust-nitrokey-sys
• rust-nitrokey-test
• rust-no-panic
• rust-nodrop
• rust-num-derive
• rust-numtoa
• rust-openssl-probe
• rust-ordermap
• rust-output-vt100
• rust-owning-ref
• rust-pad
• rust-pam-sys
• rust-parity-wasm
• rust-parse-arg
• rust-paste-impl
• rust-pcap-sys
• rust-peeking-take-while
• rust-permutohedron
• rust-pidfile-rs
• rust-pin-utils
• rust-plain
• rust-pledge
• rust-pocket-resources
• rust-podio
• rust-pool
• rust-precomputed-hash
• rust-proc-macro-nested
• rust-proc-quote-impl
• rust-procedural-masquerade
• rust-random
• rust-reduce
• rust-rfc822-sanitizer
• rust-rustc-hash
• rust-rustc-std-workspace-core
• rust-rustc-workspace-hack
• rust-rustdoc-stripper
• rust-safemem
• rust-same-file
• rust-schannel
• rust-scoped-threadpool
• rust-seccomp-sys
• rust-section-testing
• rust-security-framework-sys
• rust-semver-parser
• rust-separator
• rust-serde-urlencoded
• rust-shannon
• rust-shellwords
• rust-simplecss
• rust-sized-chunks
• rust-sourcefile
• rust-starship-module-config-derive
• rust-static-assertions
• rust-std-prelude
• rust-stdweb-derive
• rust-string-cache-shared
• rust-stringprep
• rust-sw-composite
• rust-syn-mid
• rust-synstructure-test-traits
• rust-take
• rust-take-mut
• rust-term-grid
• rust-term-size
• rust-thin-slice
• rust-tinystr
• rust-try-from
• rust-try-or
• rust-umask
• rust-unchecked-index
• rust-unicode-categories
• rust-unicode-vo
• rust-unreachable
• rust-unveil
• rust-unwrap
• rust-urlocator
• rust-utf8-ranges
• rust-vcpkg
• rust-vec-map
• rust-void
• rust-vte-generate-state-changes
• rust-winapi-build
• rust-winapi-i686-pc-windows-gnu
• rust-winapi-x86-64-pc-windows-gnu
• rust-wincolor
• rust-winreg
• rust-winutil
• rust-xmlwriter
• rust-yaml
• rust-zmq-sys

All those need just a source-only upload. CC @jbicha