When using SCCACHE_CLIENT_SIDE the stats report is not properly populated

When using SCCACHE_CLIENT_SIDE Cache hits 516 is reported correctly, but L0 (disk) hit rate and L1 (webdav) hit rate - is not.

For debugging it is useful to have these stats show correctly.

conanfile.py (...): RUN: sccache --stop-server
Stopping sccache server...
Compile requests                        0
Compile requests executed             516
Cache hits                            516
Cache hits (C/C++)                    516
Cache misses                            0
Cache hits rate                    100.00 %
Cache hits rate (C/C++)            100.00 %
Cache timeouts                          0
Cache read errors                       0
Forced recaches                         0
Cache write errors                      0
Cache errors                            0
Compilations                            0
Compilation failures                    0
Non-cacheable compilations              0
Non-cacheable calls                     0
Non-compilation calls                   0
Unsupported compiler calls              0
Average cache write                 0.000 s
Average compiler                    0.000 s
Average cache read hit              0.019 s
Failed distributed compilations         0
Multi-level cache levels                2
  L0 (disk) hits                        0
  L0 (disk) misses                      0
  L0 (disk) hit rate                    -
  L0 (disk) writes                      0
  L0 (disk) write failures              0
  L0 (disk) backfills from              0
  L0 (disk) backfills to                0
  L0 (disk) avg cache write         0.000 s
  L0 (disk) avg cache read hit      0.000 s
  L1 (webdav) hits                      0
  L1 (webdav) misses                    0
  L1 (webdav) hit rate                  -
  L1 (webdav) writes                    0
  L1 (webdav) write failures            0
  L1 (webdav) backfills from            0
  L1 (webdav) backfills to              0
  L1 (webdav) avg cache write       0.000 s
  L1 (webdav) avg cache read hit    0.000 s
Cache location                   Multi-level (2 levels)
  L0 (disk)                      Local disk: "/home/user/.cache/sccache"
  L1 (webdav)                    webdav, name: , prefix: /
Base directories                 /home/user/repos/src/, /home/user/.conan2/
Version (client)                 0.17.1
Cache size                             35 KiB
Max cache size                         10 GiB

Best regards.

Reproduce the reported output with SCCACHE_CLIENT_SIDE and compare the aggregate cache-hit statistics with the per-level L0 and L1 values. Trace the stats-reporting path responsible for these lines and verify the result against the shown multi-level cache configuration. Done means the per-level hit and hit-rate fields reflect the actual cache activity instead of zeroes and dashes.