Codex gets stuck in an infinite pooling/reuse connection loop (hyper_util) when being spawned as `codex exec` from WITHIN codex

What version of Codex is running?

0.29.0

Which model were you using?

gpt-5

What platform is your computer?

Linux 6.11.0-28-generic x86_64 x86_64

What steps can reproduce the bug?

prompt to codex:
please run this command in the shell: codex exec --skip-git-repo-check "say cheeeeese!"

What is the expected behavior?

use separate connection to api.openai.com

What do you see instead?

2025-09-05T17:51:19.650153Z INFO codex_core::config: cwd not set, using current dir
[2025-09-05T17:51:19] OpenAI Codex v0.23.0 (research preview)
--------
workdir: /home/jan/tmp/codex3
model: gpt-5
provider: openai
approval: never
sandbox: danger-full-access
reasoning effort: high
reasoning summaries: detailed
--------
[2025-09-05T17:51:19] User instructions:
say cheese!
2025-09-05T17:51:19.650597Z DEBUG codex_core::codex: Configuring session: model=gpt-5; provider=ModelProviderInfo { name: "OpenAI", base_url: None, env_key: None, env_key_instructions: None, wire_api: Responses, query_params: None, http_headers: Some({"version": "0.23.0"}), env_http_headers: Some({"OpenAI-Organization": "OPENAI_ORGANIZATION", "OpenAI-Project": "OPENAI_PROJECT"}), request_max_retries: None, stream_max_retries: None, stream_idle_timeout_ms: None, requires_openai_auth: true }
2025-09-05T17:51:19.673266Z DEBUG codex_core::codex: Recording items for conversation: [Message { id: None, role: "user", content: [InputText { text: "<environment_context>\nCurrent working directory: /home/jan/tmp/codex3\nApproval policy: never\nSandbox mode: danger-full-access\nNetwork access: enabled\n</environment_context>" }] }]
2025-09-05T17:51:19.673375Z INFO codex_exec: Codex initialized with event: SessionConfiguredEvent { session_id: a24595d1-daf7-41fe-a637-3686efa79452, model: "gpt-5", history_log_id: 38317665, history_entry_count: 74 }
2025-09-05T17:51:19.673424Z INFO codex_exec: Sent prompt with event ID: 0
2025-09-05T17:51:19.673716Z DEBUG codex_core::codex: Submission sub=Submission { id: "0", op: UserInput { items: [Text { text: "say cheese!" }] } }
2025-09-05T17:51:19.673827Z DEBUG codex_core::codex: Recording items for conversation: [Message { id: None, role: "user", content: [InputText { text: "say cheese!" }] }]
2025-09-05T17:51:19.673847Z DEBUG codex_core::codex: Recording items for conversation: []
2025-09-05T17:51:19.674214Z DEBUG codex_exec: Received event: Event { id: "0", msg: TaskStarted }
2025-09-05T17:51:19.685512Z DEBUG reqwest::connect: starting new connection: https://api.openai.com/
2025-09-05T17:51:19.687786Z DEBUG hyper_util::client::legacy::connect::http: connecting to 172.66.0.243:443
2025-09-05T17:51:19.699708Z DEBUG hyper_util::client::legacy::connect::http: connected to 172.66.0.243:443
2025-09-05T17:51:19.913001Z DEBUG hyper_util::client::legacy::pool: pooling idle connection for ("https", api.openai.com)
2025-09-05T17:51:19.924728Z DEBUG hyper_util::client::legacy::pool: reuse idle connection for ("https", api.openai.com)
2025-09-05T17:51:20.103656Z DEBUG hyper_util::client::legacy::pool: pooling idle connection for ("https", api.openai.com)
2025-09-05T17:51:20.116261Z DEBUG hyper_util::client::legacy::pool: reuse idle connection for ("https", api.openai.com)
2025-09-05T17:51:20.287602Z DEBUG hyper_util::client::legacy::pool: pooling idle connection for ("https", api.openai.com)
2025-09-05T17:51:20.299694Z DEBUG hyper_util::client::legacy::pool: reuse idle connection for ("https", api.openai.com)
2025-09-05T17:51:20.476642Z DEBUG hyper_util::client::legacy::pool: pooling idle connection for ("https", api.openai.com)
2025-09-05T17:51:20.488887Z DEBUG hyper_util::client::legacy::pool: reuse idle connection for ("https", api.openai.com)
2025-09-05T17:51:20.656085Z DEBUG hyper_util::client::legacy::pool: pooling idle connection for ("https", api.openai.com)
2025-09-05T17:51:20.667741Z DEBUG hyper_util::client::legacy::pool: reuse idle connection for ("https", api.openai.com)
2025-09-05T17:51:20.830828Z DEBUG hyper_util::client::legacy::pool: pooling idle connection for ("https", api.openai.com)
2025-09-05T17:51:20.842837Z DEBUG hyper_util::client::legacy::pool: reuse idle connection for ("https", api.openai.com)
2025-09-05T17:51:21.010313Z DEBUG hyper_util::client::legacy::pool: pooling idle connection for ("https", api.openai.com)
2025-09-05T17:51:21.022155Z DEBUG hyper_util::client::legacy::pool: reuse idle connection for ("https", api.openai.com)
2025-09-05T17:51:21.203919Z DEBUG hyper_util::client::legacy::pool: pooling idle connection for ("https", api.openai.com)
2025-09-05T17:51:21.216155Z DEBUG hyper_util::client::legacy::pool: reuse idle connection for ("https", api.openai.com)
2025-09-05T17:51:21.378153Z DEBUG hyper_util::client::legacy::pool: pooling idle connection for ("https", api.openai.com)
2025-09-05T17:51:21.389883Z DEBUG hyper_util::client::legacy::pool: reuse idle connection for ("https", api.openai.com)
2025-09-05T17:51:21.648549Z DEBUG reqwest::connect: starting new connection: https://api.openai.com/
2025-09-05T17:51:21.648794Z DEBUG hyper_util::client::legacy::pool: reuse idle connection for ("https", api.openai.com)
2025-09-05T17:51:21.650954Z DEBUG hyper_util::client::legacy::connect::http: connecting to 162.159.140.245:443
2025-09-05T17:51:21.665848Z DEBUG hyper_util::client::legacy::connect::http: connected to 162.159.140.245:443
2025-09-05T17:51:21.684739Z DEBUG hyper_util::client::legacy::pool: pooling idle connection for ("https", api.openai.com)
2025-09-05T17:51:21.819569Z DEBUG hyper_util::client::legacy::pool: pooling idle connection for ("https", api.openai.com)
2025-09-05T17:51:21.831930Z DEBUG hyper_util::client::legacy::pool: reuse idle connection for ("https", api.openai.com)
2025-09-05T17:51:22.006232Z DEBUG hyper_util::client::legacy::pool: pooling idle connection for ("https", api.openai.com)
2025-09-05T17:51:22.017808Z DEBUG hyper_util::client::legacy::pool: reuse idle connection for ("https", api.openai.com)
2025-09-05T17:51:22.185848Z DEBUG hyper_util::client::legacy::pool: pooling idle connection for ("https", api.openai.com)
2025-09-05T17:51:22.197328Z DEBUG hyper_util::client::legacy::pool: reuse idle connection for ("https", api.openai.com)
2025-09-05T17:51:22.378963Z DEBUG hyper_util::client::legacy::pool: pooling idle connection for ("https", api.openai.com)
2025-09-05T17:51:22.390723Z DEBUG hyper_util::client::legacy::pool: reuse idle connection for ("https", api.openai.com)
2025-09-05T17:51:22.580821Z DEBUG hyper_util::client::legacy::pool: pooling idle connection for ("https", api.openai.com)
2025-09-05T17:51:22.592292Z DEBUG hyper_util::client::legacy::pool: reuse idle connection for ("https", api.openai.com)
2025-09-05T17:51:22.755007Z DEBUG hyper_util::client::legacy::pool: pooling idle connection for ("https", api.openai.com)
2025-09-05T17:51:22.766323Z DEBUG hyper_util::client::legacy::pool: reuse idle connection for ("https", api.openai.com)
2025-09-05T17:51:22.929338Z DEBUG hyper_util::client::legacy::pool: pooling idle connection for ("https", api.openai.com)
2025-09-05T17:51:22.940652Z DEBUG hyper_util::client::legacy::pool: reuse idle connection for ("https", api.openai.com)
2025-09-05T17:51:23.101625Z DEBUG hyper_util::client::legacy::pool: pooling idle connection for ("https", api.openai.com)
2025-09-05T17:51:23.113486Z DEBUG hyper_util::client::legacy::pool: reuse idle connection for ("https", api.openai.com)
2025-09-05T17:51:23.273777Z DEBUG hyper_util::client::legacy::pool: pooling idle connection for ("https", api.openai.com)
2025-09-05T17:51:23.285219Z DEBUG hyper_util::client::legacy::pool: reuse idle connection for ("https", api.openai.com)

Additional information

_No response_