fix live-build resolv.conf (#3035)

* fix live-build resolv.conf

* improved debuggability

core/Cargo.lock

@@ -881,6 +881,17 @@ dependencies = [
  "windows-targets 0.52.6",
 ]
 
+[[package]]
+name = "backtrace-on-stack-overflow"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7fd2d70527f3737a1ad17355e260706c1badebabd1fa06a7a053407380df841b"
+dependencies = [
+ "backtrace",
+ "libc",
+ "nix 0.23.2",
+]
+
 [[package]]
 name = "barrage"
 version = "0.2.3"
@@ -4679,6 +4690,19 @@ dependencies = [
  "smallvec",
 ]
 
+[[package]]
+name = "nix"
+version = "0.23.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8f3790c00a0150112de0f4cd161e3d7fc4b2d8a5542ffc35f099a2562aecb35c"
+dependencies = [
+ "bitflags 1.3.2",
+ "cc",
+ "cfg-if",
+ "libc",
+ "memoffset 0.6.5",
+]
+
 [[package]]
 name = "nix"
 version = "0.24.3"
@@ -7276,6 +7300,7 @@ dependencies = [
  "async-trait",
  "axum 0.8.4",
  "backhand",
+ "backtrace-on-stack-overflow",
  "barrage",
  "base32",
  "base64 0.22.1",