Merge branch 'ps/ci-rust'

CI improvements to handle the recent Rust integration better.

* ps/ci-rust:
  rust: support for Windows
  ci: verify minimum supported Rust version
  ci: check for common Rust mistakes via Clippy
  rust/varint: add safety comments
  ci: check formatting of our Rust code
  ci: deduplicate calls to `apt-get update`

diff --cc .github/workflows/main.yml
Simple merge

diff --cc Makefile
index 1919d35bf3fb5f7e6d80dd7f2c7ea5d949c66602,366fd173e70c14ec8e9abb5c8d48c45f6706324e..562e637fa062d11d55eec5b0ee9f7a8f40aa8065
--- 1/Makefile
--- 2/Makefile
+++ b/Makefile
@@@ -927,13 -927,23 +927,20 @@@ export PYTHON_PAT
  TEST_SHELL_PATH = $(SHELL_PATH)
  
  LIB_FILE = libgit.a
 -XDIFF_LIB = xdiff/lib.a
 -REFTABLE_LIB = reftable/libreftable.a
+ 
  ifdef DEBUG
- RUST_LIB = target/debug/libgitcore.a
+ RUST_TARGET_DIR = target/debug
  else
- RUST_LIB = target/release/libgitcore.a
+ RUST_TARGET_DIR = target/release
+ endif
+ 
+ ifeq ($(uname_S),Windows)
+ RUST_LIB = $(RUST_TARGET_DIR)/gitcore.lib
+ else
+ RUST_LIB = $(RUST_TARGET_DIR)/libgitcore.a
  endif
  
 -# xdiff and reftable libs may in turn depend on what is in libgit.a
 -GITLIBS = common-main.o $(LIB_FILE) $(XDIFF_LIB) $(REFTABLE_LIB) $(LIB_FILE)
 +GITLIBS = common-main.o $(LIB_FILE)
  EXTLIBS =
  
  GIT_USER_AGENT = git/$(GIT_VERSION)

diff --cc ci/install-dependencies.sh
Simple merge

diff --cc meson.build
Simple merge