test-env-log used with test-case creates test duplicates

[luke-biel]

When I use the latest test-case and test-log (new name of test-env-log) together, I get duplicate copies of each test generated.
I also tried it with what I think were the versions from when this issue was created and have the same problem.

Full example in this gist

#[cfg(test)]
mod tests {
    use test_case::test_case;

    #[test_case(0, 0 ; "the same")]
    #[test_case(0, 1 ; "different")]
    #[test_log::test]
    // #[test_env_log::test]
    fn equality(a: usize, b: usize) {
        log::info!("a: {}", a);
        log::info!("b: {}", b);
        assert_eq!(a, b)
    }
}

Output

running 4 tests
test tests::equality::the_same ... ok
test tests::equality::the_same ... ok
test tests::equality::different ... FAILED
test tests::equality::different ... FAILED

failures:

---- tests::equality::different stdout ----
thread 'tests::equality::different' panicked at 'assertion failed: `(left == right)`
  left: `0`,
 right: `1`', main.rs:18:9
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

---- tests::equality::different stdout ----
thread 'tests::equality::different' panicked at 'assertion failed: `(left == right)`
  left: `0`,
 right: `1`', main.rs:18:9


failures:
    tests::equality::different
    tests::equality::different

test result: FAILED. 2 passed; 2 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s

error: test failed, to rerun pass '--bin main'

Originally posted by @newsch in #69 (comment)