vector: disable flaky tests

pkgs/tools/misc/vector/default.nix

@@ -53,7 +53,16 @@ rustPlatform.buildRustPackage rec {
   # dev dependency includes httpmock which depends on iashc which depends on curl-sys with http2 feature enabled
   # compilation fails because of a missing http2 include
   doCheck = !stdenv.isDarwin;
-  checkPhase = "TZDIR=${tzdata}/share/zoneinfo cargo test --no-default-features --features ${lib.concatStringsSep "," features} -- --test-threads 1";
+  # healthcheck_grafana_cloud is trying to make a network access
+  # test_stream_errors is flaky on linux-aarch64
+  checkPhase = ''
+    TZDIR=${tzdata}/share/zoneinfo cargo test \
+      --no-default-features \
+      --features ${lib.concatStringsSep "," features} \
+      -- --test-threads 1 \
+      --skip=sinks::loki::tests::healthcheck_grafana_cloud \
+      --skip=kubernetes::api_watcher::tests::test_stream_errors
+  '';
 
   # recent overhauls of DNS support in 0.9 mean that we try to resolve
   # vector.dev during the checkPhase, which obviously isn't going to work.