roundtripper.go:234: 2026-01-22T05:06:13.215740253Z: Sending Request:
        < GET / HTTP/1.1
        < Host: 172.18.0.205
        < User-Agent: Go-http-client/1.1
        < X-Echo-Set-Header: 
        < Accept-Encoding: gzip
        < 
        < 
        
        
    roundtripper.go:262: 2026-01-22T05:06:15.289475007Z: Received Response:
        < HTTP/1.1 503 Service Unavailable
        < Connection: close
        < Content-Length: 19
        < Content-Type: text/plain
        < Date: Thu, 22 Jan 2026 05:06:14 GMT
        < 
        < no healthy upstream
        
        
    http.go:276: 2026-01-22T05:06:15.289582578Z: Response expectation failed for request: {URL: {Scheme:http Opaque: User: Host:172.18.0.205 Path:/ RawPath: OmitHost:false ForceQuery:false RawQuery: Fragment: RawFragment:}, Host: , Protocol: HTTP, Method: GET, Headers: map[X-Echo-Set-Header:[]], UnfollowRedirect: false, Server: , CertPem: <truncated>, KeyPem: <truncated>}  not ready yet: expected status code to be one of [200], got 503. CRes: &{503 19 HTTP/1.1 map[Content-Length:[19] Content-Type:[text/plain] Date:[Thu, 22 Jan 2026 05:06:14 GMT]] <nil> []} (after 18.447789989s)