rusticl: check rustc version for flags requiring newer rustc/clippy

Fixes: 7e74ee07e3 ("rusticl: silence clippy::arc-with-non-send-sync for now")
Signed-off-by: Karol Herbst <kherbst@redhat.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/26780>
(cherry picked from commit 9643671dae)

.pick_status.json

@@ -264,7 +264,7 @@
         "description": "rusticl: check rustc version for flags requiring newer rustc/clippy",
         "nominated": true,
         "nomination_type": 1,
-        "resolution": 0,
+        "resolution": 1,
         "main_sha": null,
         "because_sha": "7e74ee07e3a7aebc46cbd6d724b49790cb9f9c29",
         "notes": null

meson.build

@@ -796,6 +796,7 @@ if with_gallium_rusticl
   endif
 
   add_languages('rust', required: true)
+  rustc = meson.get_compiler('rust')
 
   with_clc = true
 endif

src/gallium/frontends/rusticl/meson.build

@@ -89,10 +89,15 @@ rusticl_args = [
   '-Aclippy::redundant_field_names',
   '-Aclippy::too_many_arguments',
   '-Aclippy::type_complexity',
-  # Needs to be fixed
-  '-Aclippy::arc-with-non-send-sync',
 ]
 
+if rustc.version().version_compare('>=1.72')
+  rusticl_args += [
+    # Needs to be fixed
+    '-Aclippy::arc-with-non-send-sync'
+  ]
+endif
+
 rusticl_gen_args = [
   # can't do anything about it anyway
   '-Aclippy::all',