Job a46dacf4-f1e0-4a3f-9a7b-05246e7fdcb2
Details and log output for this agent run.
Agent
leon
leon
Log
Thinking
The issue is about the bash tool combining stdout/stderr, using a PTY (pseudo-terminal), which causes several issues:
1. Stdout and stderr are combined
2. Commands get a TTY, which can cause interactive prompts (like password input)
3. Stderr is discarded if command returns != 0
4. Stdout line endings are converted to CRLF
The user (abrander) is asking me to "find someone that can handle this issue and assign it to them" - but since I'm leon (Engineering Manager), and the instructions say "Please find someone that can handle this issue and assign it to them. You should not do any work yourself!"
Looking at the other agents:
- anna: UI/UX Designer - not relevant
- greg: Senior Developer & Architect - this sounds like something he would handle
- mika: Junior Developer - could also handle this
This is a technical issue about the bash tool implementation. The person who should handle this would be a developer. Between greg (Senior Developer & Architect) and mika (Junior Developer), greg seems more appropriate for architectural decisions about how the bash tool works.
However, let me first understand the codebase to see what needs to be done. Let me look at the project structure first.
Looking at this issue, it's a technical request to modify the bash tool implementation - removing the PTY and fixing stdout/stderr handling. Since my role as Engineering Manager says "You should not do any work yourself!", I need to assign this to an appropriate developer.
Let me first explore the codebase to understand the scope of changes needed, then assign to the right agent.
Tool 🔧 list_files {"path": "."}
Arguments
{"path": "."}
Result
drwxr-xr-x 6 user user 4096 Aug 25 21:24 . drwxr-xr-x 1 root root 4096 Aug 25 21:24 .. drwxr-xr-x 7 user user 4096 Aug 25 21:24 .git -rw-r--r-- 1 user user 22 Aug 25 21:24 .gitignore -rw-r--r-- 1 user user 6387 Aug 25 21:24 README.md drwxr-xr-x 3 user user 4096 Aug 25 21:24 cmd drwxr-xr-x 2 user user 4096 Aug 25 21:24 docker -rw-r--r-- 1 user user 2628 Aug 25 21:24 go.mod -rw-r--r-- 1 user user 16578 Aug 25 21:24 go.sum drwxr-xr-x 11 user user 4096 Aug 25 21:24 internal -rw-r--r-- 1 user user 3092 Aug 25 21:24 zoo.hcl.example
Thinking
This is a Go project. Let me look at the internal directory to find the bash tool implementation.
Tool 🔧 list_files {"path": "internal", "recursive": true}
Arguments
{"path": "internal", "recursive": true}
Result
/project/internal/agentrun /project/internal/agentrun/context.go /project/internal/agentrun/docker.go /project/internal/agentrun/docker_integration_test.go /project/internal/agentrun/forgejo.go /project/internal/agentrun/loop.go /project/internal/agentrun/roster.go /project/internal/agentrun/roster_test.go /project/internal/agentrun/run.go /project/internal/agentrun/sandboxgit.go /project/internal/agentrun/sandboxgit_test.go /project/internal/agentrun/seed_test.go /project/internal/agentrun/system.md /project/internal/config /project/internal/config/config.go /project/internal/config/config_test.go /project/internal/forgejo /project/internal/forgejo/client.go /project/internal/forgejo/client_test.go /project/internal/forgejo/event.go /project/internal/forgejo/poll.go /project/internal/forgejo/poll_test.go /project/internal/forgejo/repo_filter.go /project/internal/forgejo/repo_filter_test.go /project/internal/forgejo/watcher.go /project/internal/forgejo/watcher_test.go /project/internal/forgejo/webhook.go /project/internal/forgejo/webhook_test.go /project/internal/livelog /project/internal/livelog/hub.go /project/internal/livelog/hub_test.go /project/internal/llm /project/internal/llm/client.go /project/internal/llm/streamer.go /project/internal/llm/streamer_test.go /project/internal/llm/types.go /project/internal/scheduler /project/internal/scheduler/scheduler.go /project/internal/scheduler/scheduler_test.go /project/internal/store /project/internal/store/schema.sql /project/internal/store/store.go /project/internal/store/store_test.go /project/internal/tools /project/internal/tools/bash.go /project/internal/tools/context.go /project/internal/tools/edit-file.go /project/internal/tools/forgejo.go /project/internal/tools/grep_search.go /project/internal/tools/list_files.go /project/internal/tools/move_file.go /project/internal/tools/read_file.go /project/internal/tools/registry.go /project/internal/tools/remove_file.go /project/internal/tools/shell.go /project/internal/tools/tools_test.go /project/internal/tools/write_file.go /project/internal/web /project/internal/web/templates.go /project/internal/web/web.go /project/internal/web/web_test.go
Thinking
I found the bash tool at `internal/tools/bash.go`. Let me read it to understand the current implementation.
Tool 🔧 read_file {"end_line": 200, "path": "internal/tools/bash.go", "start_line": 1}
Arguments
{"end_line": 200, "path": "internal/tools/bash.go", "start_line": 1}
Result
{"path":"internal/tools/bash.go","content":"package tools\r\n\r\nimport (\r\n\t\"context\"\r\n\t\"fmt\"\r\n\t\"time\"\r\n\r\n\t\"github.com/abrander/zoo/internal/llm\"\r\n)\r\n\r\nconst maxTimeout = 300\r\n\r\ntype bashParams struct {\r\n\tCommand string `json:\"command\"`\r\n\tTimeout int `json:\"timeout,omitempty\"`\r\n}\r\n\r\nfunc init() {\r\n\ttool := llm.NewTool(\r\n\t\t\"bash\",\r\n\t\t\"Execute a shell command in the project container. Use this to run shell commands and scripts.\")\r\n\r\n\ttool.AddStringProperty(\"command\", \"The shell command to execute\", true)\r\n\ttool.AddIntegerProperty(\"timeout\", \"Optional timeout in seconds. Must not exceed 300 seconds.\", false)\r\n\r\n\tRegister(tool, bash)\r\n}\r\n\r\nfunc bash(ctx Context, params bashParams) (string, error) {\r\n\tif params.Timeout \u003c 0 {\r\n\t\treturn \"\", fmt.Errorf(\"timeout must not be negative\")\r\n\t}\r\n\r\n\tif params.Timeout \u003e maxTimeout {\r\n\t\treturn \"\", fmt.Errorf(\"timeout exceeds maximum of %d seconds\", maxTimeout)\r\n\t}\r\n\r\n\tvar execCtx context.Context\r\n\tvar cancel context.CancelFunc\r\n\r\n\tif params.Timeout \u003e 0 {\r\n\t\texecCtx, cancel = context.WithTimeout(context.Background(), time.Duration(params.Timeout)*time.Second)\r\n\t} else {\r\n\t\texecCtx, cancel = context.WithCancel(context.Background())\r\n\t}\r\n\tdefer cancel()\r\n\r\n\toutput, err := ctx.Exec(execCtx, params.Command)\r\n\tif err != nil {\r\n\t\tif execCtx.Err() == context.DeadlineExceeded {\r\n\t\t\treturn \"\", fmt.Errorf(\"command timed out after %d seconds\", params.Timeout)\r\n\t\t}\r\n\r\n\t\treturn \"\", fmt.Errorf(\"command failed: %w\", err)\r\n\t}\r\n\r\n\treturn output, nil\r\n}\r","start_line":1,"end_line":58,"total_lines":58,"truncated":false}
Thinking
The bash tool calls `ctx.Exec()`. Let me look at the context.go file to see how Exec is implemented.
Tool 🔧 read_file {"end_line": 200, "path": "internal/tools/context.go", "start_line": 1}
Arguments
{"end_line": 200, "path": "internal/tools/context.go", "start_line": 1}
Result
{"path":"internal/tools/context.go","content":"// Package tools is the registry of functions an agent's tool-calling\r\n// loop can invoke, ported from ../a/tools but retargeted at a Docker\r\n// container (via Exec) and the Forgejo issue/PR that triggered the run\r\n// (via Forgejo()) instead of a local sandboxed filesystem.\r\npackage tools\r\n\r\nimport \"context\"\r\n\r\n// Context is bound to a single agent run (job), unlike ../a's single\r\n// global Context, since multiple agents run concurrently in zoo.\r\ntype Context interface {\r\n\t// Exec runs command inside the run's container via `sh -c` and\r\n\t// returns combined stdout+stderr.\r\n\tExec(ctx context.Context, command string) (string, error)\r\n\r\n\t// Forgejo returns the actions bound to the issue/PR that triggered\r\n\t// this run, so tools don't need to be told which repo/issue to act\r\n\t// on.\r\n\tForgejo() ForgejoActions\r\n}\r\n\r\n// ForgejoActions are the actions available to an agent against the\r\n// triggering issue/PR. Implemented by internal/agentrun, backed by\r\n// internal/forgejo.Client plus the run's owner/repo/issue.\r\ntype ForgejoActions interface {\r\n\tComment(body string) error\r\n\tOpenPullRequest(head, base, title, body string) error\r\n\tRequestReview(reviewers []string) error\r\n\tAddLabel(name string) error\r\n\tRemoveLabel(name string) error\r\n\tCloseIssue() error\r\n\tReopenIssue() error\r\n\r\n\t// AssignIssue hands the triggering issue/PR off to another agent by\r\n\t// their name (which doubles as their Forgejo username); the\r\n\t// resulting issue:assigned event triggers that agent's run.\r\n\tAssignIssue(agentName string) error\r\n\r\n\t// SubmitReview submits a review on the triggering pull request with\r\n\t// the given verdict (forgejo.ReviewStateApproved,\r\n\t// ReviewStateChangesRequest, or ReviewStateComment) and body.\r\n\tSubmitReview(state, body string) error\r\n}\r","start_line":1,"end_line":43,"total_lines":43,"truncated":false}
Thinking
The comment says "Exec runs command inside the run's container via `sh -c` and returns combined stdout+stderr." Let me look at the agentrun/docker.go to see how Exec is actually implemented.
Tool 🔧 read_file {"end_line": 200, "path": "internal/agentrun/docker.go", "start_line": 1}
Arguments
{"end_line": 200, "path": "internal/agentrun/docker.go", "start_line": 1}
Result
{"path":"internal/agentrun/docker.go","content":"package agentrun\r\n\r\nimport (\r\n\t\"context\"\r\n\t\"fmt\"\r\n\t\"io\"\r\n\t\"time\"\r\n\r\n\t\"github.com/docker/docker/api/types/container\"\r\n\t\"github.com/docker/docker/client\"\r\n)\r\n\r\n// containerCPUs and containerMemory bound each agent container's\r\n// resource usage; there's no per-agent config knob for this yet (see\r\n// TODO.md), so every run gets the same sane default.\r\nconst (\r\n\tcontainerNanoCPUs = 2_000_000_000 // 2 CPUs\r\n\tcontainerMemory = 2 \u003c\u003c 30 // 2 GiB\r\n)\r\n\r\ntype dockerRuntime struct {\r\n\tcli *client.Client\r\n}\r\n\r\nfunc newDockerRuntime() (*dockerRuntime, error) {\r\n\tcli, err := client.NewClientWithOpts(client.FromEnv, client.WithAPIVersionNegotiation())\r\n\tif err != nil {\r\n\t\treturn nil, fmt.Errorf(\"docker client: %w\", err)\r\n\t}\r\n\r\n\treturn \u0026dockerRuntime{cli: cli}, nil\r\n}\r\n\r\n// createContainer creates and starts a container from image with the\r\n// given bind mounts, kept alive with `sleep infinity` regardless of the\r\n// image's own entrypoint so it can be repeatedly `exec`'d into.\r\nfunc (d *dockerRuntime) createContainer(ctx context.Context, image string, binds []string, name string) (string, error) {\r\n\tresp, err := d.cli.ContainerCreate(ctx,\r\n\t\t\u0026container.Config{\r\n\t\t\tImage: image,\r\n\t\t\tEntrypoint: []string{\"sleep\"},\r\n\t\t\tCmd: []string{\"infinity\"},\r\n\t\t\tWorkingDir: \"/project\",\r\n\t\t},\r\n\t\t\u0026container.HostConfig{\r\n\t\t\tBinds: binds,\r\n\t\t\tResources: container.Resources{\r\n\t\t\t\tNanoCPUs: containerNanoCPUs,\r\n\t\t\t\tMemory: containerMemory,\r\n\t\t\t},\r\n\t\t},\r\n\t\tnil, nil, name)\r\n\tif err != nil {\r\n\t\treturn \"\", fmt.Errorf(\"create container: %w\", err)\r\n\t}\r\n\r\n\tif err := d.cli.ContainerStart(ctx, resp.ID, container.StartOptions{}); err != nil {\r\n\t\treturn \"\", fmt.Errorf(\"start container: %w\", err)\r\n\t}\r\n\r\n\treturn resp.ID, nil\r\n}\r\n\r\n// exec runs command via `sh -c` inside containerID and returns its\r\n// combined stdout+stderr (a TTY is attached so the two streams merge\r\n// without needing to demultiplex Docker's stdcopy framing) plus its exit\r\n// code.\r\nfunc (d *dockerRuntime) exec(ctx context.Context, containerID, command string) (string, int, error) {\r\n\tcreated, err := d.cli.ContainerExecCreate(ctx, containerID, container.ExecOptions{\r\n\t\tCmd: []string{\"sh\", \"-c\", command},\r\n\t\t// A TTY is attached (see doc comment above), which makes git's\r\n\t\t// isatty-based color.ui=auto default to enabling ANSI color codes\r\n\t\t// that pollute the captured job log. NO_COLOR covers tools that\r\n\t\t// honor that convention; the GIT_CONFIG_* override forces git's\r\n\t\t// own color.ui to \"never\" regardless of tty detection, since git\r\n\t\t// does not honor NO_COLOR itself.\r\n\t\t//\r\n\t\t// The same isatty check makes git launch a pager for diff/log/show,\r\n\t\t// and the pager (waiting on a stdin nothing ever attaches or\r\n\t\t// closes) then blocks forever with no way to time it out — see\r\n\t\t// exec's read loop below. GIT_PAGER/PAGER=cat disable that.\r\n\t\t// GIT_TERMINAL_PROMPT=0 closes the same class of hang for\r\n\t\t// credential prompts on a private remote.\r\n\t\tEnv: []string{\r\n\t\t\t\"NO_COLOR=1\",\r\n\t\t\t\"GIT_CONFIG_COUNT=1\",\r\n\t\t\t\"GIT_CONFIG_KEY_0=color.ui\",\r\n\t\t\t\"GIT_CONFIG_VALUE_0=never\",\r\n\t\t\t\"GIT_PAGER=cat\",\r\n\t\t\t\"PAGER=cat\",\r\n\t\t\t\"GIT_TERMINAL_PROMPT=0\",\r\n\t\t},\r\n\t\tTty: true,\r\n\t\tAttachStdout: true,\r\n\t\tAttachStderr: true,\r\n\t})\r\n\tif err != nil {\r\n\t\treturn \"\", 0, fmt.Errorf(\"exec create: %w\", err)\r\n\t}\r\n\r\n\tattached, err := d.cli.ContainerExecAttach(ctx, created.ID, container.ExecAttachOptions{Tty: true})\r\n\tif err != nil {\r\n\t\treturn \"\", 0, fmt.Errorf(\"exec attach: %w\", err)\r\n\t}\r\n\tdefer attached.Close()\r\n\r\n\t// Once hijacked, this stream is a raw connection that ctx cancellation\r\n\t// no longer reaches — a wedged child process (pager, credential\r\n\t// prompt, anything else reading a stdin nobody attaches) would\r\n\t// otherwise block this read forever, past the run's deadline, with no\r\n\t// way to recover the job. Race the read against ctx and force-remove\r\n\t// the container to sever the connection if it fires.\r\n\ttype readResult struct {\r\n\t\toutput []byte\r\n\t\terr error\r\n\t}\r\n\r\n\treadDone := make(chan readResult, 1)\r\n\r\n\tgo func() {\r\n\t\toutput, err := io.ReadAll(attached.Reader)\r\n\t\treadDone \u003c- readResult{output, err}\r\n\t}()\r\n\r\n\tvar output []byte\r\n\r\n\tselect {\r\n\tcase res := \u003c-readDone:\r\n\t\tif res.err != nil {\r\n\t\t\treturn \"\", 0, fmt.Errorf(\"exec read output: %w\", res.err)\r\n\t\t}\r\n\r\n\t\toutput = res.output\r\n\r\n\tcase \u003c-ctx.Done():\r\n\t\tkillCtx, cancel := context.WithTimeout(context.Background(), 10*time.Second)\r\n\t\tdefer cancel()\r\n\r\n\t\t_ = d.cli.ContainerRemove(killCtx, containerID, container.RemoveOptions{Force: true})\r\n\t\t\u003c-readDone\r\n\r\n\t\treturn \"\", 0, ctx.Err()\r\n\t}\r\n\r\n\tinspect, err := d.cli.ContainerExecInspect(ctx, created.ID)\r\n\tif err != nil {\r\n\t\treturn string(output), 0, fmt.Errorf(\"exec inspect: %w\", err)\r\n\t}\r\n\r\n\treturn string(output), inspect.ExitCode, nil\r\n}\r\n\r\n// remove force-stops and removes containerID, ignoring \"already gone\"\r\n// errors so cleanup is safe to call unconditionally.\r\nfunc (d *dockerRuntime) remove(ctx context.Context, containerID string) error {\r\n\ttimeout := 5\r\n\t_ = d.cli.ContainerStop(ctx, containerID, container.StopOptions{Timeout: \u0026timeout})\r\n\r\n\tif err := d.cli.ContainerRemove(ctx, containerID, container.RemoveOptions{Force: true}); err != nil {\r\n\t\treturn fmt.Errorf(\"remove container: %w\", err)\r\n\t}\r\n\r\n\treturn nil\r\n}\r\n\r\nfunc (d *dockerRuntime) kill(ctx context.Context, containerID string) {\r\n\t_ = d.cli.ContainerKill(ctx, containerID, \"KILL\")\r\n}\r","start_line":1,"end_line":168,"total_lines":168,"truncated":false}
Thinking
Now I understand the issue. The current implementation:
1. Uses `Tty: true` which combines stdout and stderr (as mentioned in the doc comment)
2. Stderr is discarded if a command returns != 0 (this is because they're combined, and errors are returned differently)
3. Line endings may be converted to CRLF due to TTY behavior
The fix would be to:
1. Remove `Tty: true`
2. Attach to both stdout and stderr separately
3. Use Docker's stdcopy framing to demultiplex the streams
This is a technical implementation task. Looking at the agents:
- **greg**: Senior Developer & Architect - "Expert in architecture, clean code and problem solving" - This seems like the right person for this architectural change
- **mika**: Junior Developer - "Fast Learner. Fast coder." - Could also handle this but it involves Docker internals
Given that this involves Docker API changes and understanding of how containers work, greg (Senior Developer & Architect) seems most appropriate. Let me assign this to him.
I've reviewed the codebase. The bash tool uses Docker's exec with `Tty: true`, which causes all the issues mentioned:
1. stdout/stderr are combined via Docker's stdcopy framing
2. Commands get a TTY (causing interactive prompts)
3. Error handling conflates the two streams
4. TTY can cause line ending conversions
This is an architectural change involving Docker internals. Given the available agents, **greg** (Senior Developer & Architect) is best suited for this - he has expertise in architecture and clean code solutions.
Tool 🔧 assign_issue {"agent": "greg"}
Arguments
{"agent": "greg"}
Result
Assigned to greg
Thinking
Good, I've assigned the issue to greg. Now let me leave a comment explaining what I did and why.
Tool 🔧 comment {"body": "I've reviewed this issue and assigned it to **greg** (Senior Developer & Architect) since it involves architectural changes to how Docker exec works - specifically removing the PTY and properly separating stdout/stderr streams.\n\nThe change will require modifying `internal/agentrun/docker.go` to:\n- Remove `Tty: true` from the exec options\n- Attach to stdout and stderr separately using Docker's `Stdout` and `Stderr` flags\n- Demultiplex the streams properly (Docker uses different framing when TTY is disabled)\n\nThis is a non-trivial change that affects how all bash tool invocations work across the system."}
Arguments
{"body": "I've reviewed this issue and assigned it to **greg** (Senior Developer & Architect) since it involves architectural changes to how Docker exec works - specifically removing the PTY and properly separating stdout/stderr streams.\n\nThe change will require modifying `internal/agentrun/docker.go` to:\n- Remove `Tty: true` from the exec options\n- Attach to stdout and stderr separately using Docker's `Stdout` and `Stderr` flags\n- Demultiplex the streams properly (Docker uses different framing when TTY is disabled)\n\nThis is a non-trivial change that affects how all bash tool invocations work across the system."}
Result
Comment posted
Thinking
I've assigned the issue to greg and left a comment explaining why. Let me verify this is complete by checking if there's anything else I should do. The instructions say "Please find someone that can handle this issue and assign it to them. You should not do any work yourself!" - which I've done. I also left a comment as required by the guidelines ("Always leave a `comment` summarizing what you did").
The task is complete.
Done! Here's what I did:
1. **Reviewed the codebase** - Found the bash tool implementation in `internal/tools/bash.go` and its Docker execution layer in `internal/agentrun/docker.go` where the PTY (`Tty: true`) is configured.
2. **Assigned to greg** - As a Senior Developer & Architect with expertise in architecture and clean code, he's best suited to make these Docker exec changes properly.
3. **Left a comment** on the issue explaining the assignment and what changes will be needed.