Use correct CARGO_HOME in test_rust.sh

Out-of-tree builds could fail to run the rust tests if built in
offline mode.  cargo expects CARGO_HOME to point to the .cargo
directory, not the directory containing .cargo.

Fixes bug 26455; bug not in any released tor.

diff --git a/src/test/test_rust.sh b/src/test/test_rust.sh
index 95ffc2e65976cfd3d2b7ebeea2f4c36d5d08d9e3..c7d0439ad1ff9effefa656d275a643a0eda0eb97 100755 (executable)
--- a/src/test/test_rust.sh
+++ b/src/test/test_rust.sh
@@ -8,7 +8,7 @@ for cargo_toml_dir in "${abs_top_srcdir:-../../..}"/src/rust/*; do
     if [ -e "${cargo_toml_dir}/Cargo.toml" ]; then
        cd "${cargo_toml_dir}" && \
            CARGO_TARGET_DIR="${abs_top_builddir:-../../..}/src/rust/target" \
-           CARGO_HOME="${abs_top_builddir:-../../..}/src/rust" \
+           CARGO_HOME="${abs_top_builddir:-../../..}/src/rust/.cargo" \
            "${CARGO:-cargo}" test --all-features ${CARGO_ONLINE-"--frozen"} \
            ${EXTRA_CARGO_OPTIONS} \
            --manifest-path "${cargo_toml_dir}/Cargo.toml" || exitcode=1