tests/cp/link-heap: lot of "file exists" in the GNU logs

[sylvestre]

Example: https://github.com/uutils/coreutils/actions/runs/7237755485/job/19717789253?pr=5660

2023-12-17T10:31:35.9013578Z 
2023-12-17T10:31:35.9013834Z ERROR: tests/cp/link-heap
2023-12-17T10:31:35.9180181Z =========================
2023-12-17T10:31:35.9183294Z 
2023-12-17T10:31:35.9185844Z mkdir: d00000000000000000000000001e+01: File exists
2023-12-17T10:31:35.9234949Z mkdir: d00000000000000000000000001e+01: File exists
2023-12-17T10:31:35.9242293Z mkdir: d00000000000000000000000001e+01: File exists
2023-12-17T10:31:35.9311379Z mkdir: d00000000000000000000000001e+01: File exists
2023-12-17T10:31:35.9391398Z mkdir: d00000000000000000000000002e+01: File exists
2023-12-17T10:31:35.9397774Z mkdir: d00000000000000000000000002e+01: File exists
2023-12-17T10:31:35.9405854Z mkdir: d00000000000000000000000002e+01: File exists
2023-12-17T10:31:35.9413533Z mkdir: d00000000000000000000000002e+01: File exists
2023-12-17T10:31:35.9421761Z mkdir: d00000000000000000000000002e+01: File exists
2023-12-17T10:31:35.9471905Z mkdir: d00000000000000000000000002e+01: File exists
2023-12-17T10:31:35.9477384Z mkdir: d00000000000000000000000002e+01: File exists
2023-12-17T10:31:35.9483360Z mkdir: d00000000000000000000000002e+01: File exists
2023-12-17T10:31:35.9488448Z mkdir: d00000000000000000000000002e+01: File exists
2023-12-17T10:31:35.9491806Z mkdir: d00000000000000000000000002e+01: File exists
2023-12-17T10:31:35.9494560Z mkdir: d00000000000000000000000003e+01: File exists
2023-12-17T10:31:35.9498676Z mkdir: d00000000000000000000000003e+01: File exists
2023-12-17T10:31:35.9499199Z mkdir: d00000000000000000000000003e+01: File exists
2023-12-17T10:31:35.9505226Z mkdir: d00000000000000000000000003e+01: File exists
2023-12-17T10:31:35.9509164Z mkdir: d00000000000000000000000003e+01: File exists
2023-12-17T10:31:35.9514803Z mkdir: d00000000000000000000000003e+01: File exists
2023-12-17T10:31:35.9521928Z mkdir: d00000000000000000000000003e+01: File exists
2023-12-17T10:31:35.9591529Z mkdir: d00000000000000000000000003e+01: File exists
2023-12-17T10:31:35.9597190Z mkdir: d00000000000000000000000004e+01: File exists
2023-12-17T10:31:35.9605902Z mkdir: d00000000000000000000000004e+01: File exists
2023-12-17T10:31:35.9613570Z mkdir: d00000000000000000000000004e+01: File exists

[cre4ture]

I tried to reproduce the issue. But for me the test is passing. I also checked the CI/CD run for the main branch. It passes there. I guess the issue is already solved and we can close this issue, right?