diff --git a/components-rs/crashtracker.h b/components-rs/crashtracker.h
index f2682769b6..c5e4464c13 100644
--- a/components-rs/crashtracker.h
+++ b/components-rs/crashtracker.h
@@ -675,7 +675,16 @@ void ddog_crasht_StackTrace_drop(struct ddog_crasht_Handle_StackTrace *trace);
  */
 DDOG_CHECK_RETURN
 struct ddog_VoidResult ddog_crasht_StackTrace_push_frame(struct ddog_crasht_Handle_StackTrace *trace,
-                                                         struct ddog_crasht_Handle_StackFrame *frame);
+                                                         struct ddog_crasht_Handle_StackFrame *frame,
+                                                         bool incomplete);
+
+/**
+ * # Safety
+ * The `stacktrace` can be null, but if non-null it must point to a StackTrace made by this module,
+ * which has not previously been dropped.
+ */
+DDOG_CHECK_RETURN
+struct ddog_VoidResult ddog_crasht_StackTrace_set_complete(struct ddog_crasht_Handle_StackTrace *trace);
 
 /**
  * Demangles the string "name".
diff --git a/components-rs/sidecar.rs b/components-rs/sidecar.rs
index 3b0d0b4409..76110f40b5 100644
--- a/components-rs/sidecar.rs
+++ b/components-rs/sidecar.rs
@@ -120,7 +120,16 @@ pub extern "C" fn ddog_sidecar_connect_php(
                 cfg.log_method = LogMethod::File(str.into());
             }
             #[cfg(not(windows))]
-            { cfg.log_method = LogMethod::File(OsStr::from_bytes(error_path).into()); }
+            {
+                // Paths containing a colon generally are some magic - just log to stderr directly
+                // E.g. "/var/www/html/host:[3]" on a serverless platform
+                // In general, stdio is the only way for having magic paths here.
+                if error_path.contains(&b':') {
+                    cfg.log_method = LogMethod::Stderr;
+                } else {
+                    cfg.log_method = LogMethod::File(OsStr::from_bytes(error_path).into());
+                }
+            }
         }
         #[cfg(windows)]
             let log_level = log_level.to_utf8_lossy().as_ref().into();
diff --git a/libdatadog b/libdatadog
index 8331f61e25..82cb3464c6 160000
--- a/libdatadog
+++ b/libdatadog
@@ -1 +1 @@
-Subproject commit 8331f61e250144cf8297e75bd9a45b4cb463286c
+Subproject commit 82cb3464c68387eb47a57ec9b19ea80f7732d366