Rust nightly seems to have broken the thread sanitiser.

Hopefully we can reenable this when
rust-lang/rust#122476 is fixed.

Author: ltratt

.buildbot.sh

@@ -153,12 +153,12 @@ for tracer in $TRACERS; do
       -Z build-std \
       --target x86_64-unknown-linux-gnu
 
-    RUST_TEST_THREADS=1 \
-      RUSTFLAGS="-Z sanitizer=thread" \
-      TSAN_OPTIONS="suppressions=$suppressions_path" \
-      cargo test \
-      -Z build-std \
-      --target x86_64-unknown-linux-gnu
+    # RUST_TEST_THREADS=1 \
+    #   RUSTFLAGS="-Z sanitizer=thread" \
+    #   TSAN_OPTIONS="suppressions=$suppressions_path" \
+    #   cargo test \
+    #   -Z build-std \
+    #   --target x86_64-unknown-linux-gnu
 done
 
 # We now want to test building with `--release`.