# tests/no_write_on_open.rs runs against one real git repository on disk and several of its tests
# mutate it, so they have to run one at a time. The file has always said so in a comment; this is
# what makes plain `cargo test` obey it, rather than leaving the suite green only for whoever
# remembers to pass `-- --test-threads=1`.
#
# The other suites use a TempDir each and do not care. Serializing them costs well under a second.
[env]
RUST_TEST_THREADS = "1"