rust: Don't use --frozen during build.

If sources are vendored, we get the same effect of using frozen
with a lock file, and the Cargo.lock is generated based
on the vendored sources.

This also removes the need to ship a Cargo.lock.

Fixed out of source builds with vendored sources.

.github/workflows/builds.yml

@@ -145,8 +145,6 @@ jobs:
           name: dist
       - run: tar zxvf ./dist/suricata-*.tar.gz --strip-components=1
       - run: ./configure
-      - name: Check that Rust is using --frozen
-        run: grep -q '^FROZEN' rust/Makefile
       - run: make -j2
       - run: make install
       - run: make install-conf

rust/Makefile.am

@@ -1,5 +1,4 @@
-EXTRA_DIST =	Cargo.lock \
-		src \
+EXTRA_DIST =	src \
 		.cargo/config.in \
 		gen-c-headers.py
 
@@ -7,10 +6,6 @@ if HAVE_CARGO_VENDOR
 EXTRA_DIST +=	vendor
 endif
 
-if HAVE_RUST_VENDOR
-FROZEN = --frozen
-endif
-
 if !DEBUG
 RELEASE = --release
 endif
@@ -33,16 +28,16 @@ if HAVE_PYTHON
 endif
 if HAVE_CYGPATH
 	rustpath=`cygpath -a -t mixed $(abs_top_builddir)`
-	cd $(top_srcdir)/rust && @rustup_home@ \
+	@rustup_home@ \
 		CARGO_HOME="$(CARGO_HOME)" \
 		CARGO_TARGET_DIR="$$rustpath/rust/target" \
-		$(CARGO) build $(RELEASE) $(FROZEN) \
+		$(CARGO) build $(RELEASE) \
 			--features "$(RUST_FEATURES)" $(RUST_TARGET)
 else
-	cd $(top_srcdir)/rust && @rustup_home@ \
+	@rustup_home@ \
 		CARGO_HOME="$(CARGO_HOME)" \
 		CARGO_TARGET_DIR="$(abs_top_builddir)/rust/target" \
-		$(CARGO) build $(RELEASE) $(FROZEN) \
+		$(CARGO) build $(RELEASE) \
 			--features "$(RUST_FEATURES)" $(RUST_TARGET)
 endif
 
@@ -53,12 +48,9 @@ distclean-local: clean-local
 	rm -rf vendor gen Cargo.lock
 
 check:
-	CARGO_HOME="$(CARGO_HOME)" @rustup_home@
-		$(CARGO) test --features "$(RUST_FEATURES)"
-
-Cargo.lock: Cargo.toml
-	CARGO_HOME="$(CARGO_HOME)" @rustup_home@ $(CARGO) \
-		generate-lockfile
+	CARGO_HOME="$(CARGO_HOME)" @rustup_home@ \
+		CARGO_TARGET_DIR="$(abs_top_builddir)/rust/target" \
+		$(CARGO) test $(RELEASE) --features "$(RUST_FEATURES)"
 
 if HAVE_CARGO_VENDOR
 vendor: