- update to 4.6.3:
  * Fixed detection of PCH header for concatenated `-include` option (e.g.,
   `-includepch.h` instead of `-include pch.h`).
  * Fixed build with musl when using GCC 12.
  * Disabled the `"Failure to write output file"` when running on a filesystem
   that doesn't support read-only directories.
  * Fixed a race condition that could lead to a crash if a file in the cache is
    removed with unlucky timing, e.g. by another ccache process doing cache
    cleanup.
  * Dependency file rewriting will now always be performed if
    `base_dir`/`CCACHE_BASEDIR` is active. This fixes a problem with the
    dependency file content when Clang is used with `-fsanitize=address`.
  * Fixed handling of error condition for `--hash-file`/`--checksum-file`.
  * Made sure to enable the inode cache only if subsecond `stat` timestamps are
    available.
  * Added a work-around for a Clang bug when writing to a full NFS file system.
  * Made failure writing to the output file increment the "`bad output file`"
    counter instead of "`cache miss`".
  * Fixed false positive cache hits for code constructions similar to
    `__asm__(".incbin" " \"file\"")`.
  * Fixed false success for `-fcolor-diagnostics` probe with GCC. A side effect of
    this is that a compiler type that ccache can't identify from the compiler name
    (such as `/usr/bin/cc` where `cc` is not a symlink) from now on won't produce
    color diagnostics when used via ccache even if the compiler actually is GCC or
    Clang.
  * More cases of invalid secondary storage URLs are now handled gracefully.
  * Fixed the display of maximum cache size in `ccache -s` if it's 0 (=
    unlimited).
  * Removed AsciiDoc markup from help text of `--trim-dir`.
  * The temporary directory is now cleaned up properly even if it's left

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