Non-interactive mode crashes with UTF-8 error when any tool is invoked

[beebora]

Checks

• I have searched github.com/aws/amazon-q-developer-cli/issues and there are no duplicates of my issue
• I have run q doctor in the affected terminal session
• I have run q restart and replicated the issue again

Operating system

Linux 6.6.87.2-microsoft-standard-WSL2 - Ubuntu 24.04.2 LTS

Expected behaviour

Command should complete successfully and output results to STDOUT.

Actual behaviour

Application panics with error:

The application panicked (crashed).
Message: called Result::unwrap() on an Err value:
0: stream did not contain valid UTF-8
1: stream did not contain valid UTF-8

Location:
crates/chat-cli/src/cli/chat/input_source.rs:73

Steps to reproduce

1. Run any command with --no-interactive flag that triggers tool usage
2. Example: kiro-cli chat "say your name" --no-interactive
3. Example: kiro-cli chat "search google for alphabet A" --no-interactive

Environment

<This will be visible to anyone. Do not include personal or sensitive information>

[q-details]
version = "1.26.2"
hash = "a8687141fdf1e599719c4da99f88f338aba93537"
date = "2026-02-18T03:14:07.056617Z (8d ago)"
variant = "minimal"

[system-info]
chip = "Intel(R) Core(TM) Ultra 5 125H"
total-cores = 9
memory = "7.62 GB"

[system-info.os.linux]
kernel_version = "6.6.87.2-microsoft-standard-WSL2"
id = "ubuntu"
name = "Ubuntu"
pretty_name = "Ubuntu 24.04.2 LTS"
version_id = "24.04"
version = "24.04.2 LTS (Noble Numbat)"

[environment]
cwd = "/mnt/d/2_Codes/BECON/monitoring-ax"
cli-path = "/mnt/d/2_Codes/BECON/monitoring-ax"
os = "Linux"
shell-path = "/home/USER/.local/bin/kiro-cli-chat"
install-method = "unknown"
in-wsl = true

[env-vars]
DISPLAY = ":0"
PATH = "/home/USER/.local/bin:/home/USER/.nvm/versions/node/v24.13.1/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/usr/lib/wsl/lib:/mnt/c/Program Files/PowerShell/7:/mnt/c/Program Files/Microsoft SDKs/Azure/CLI2/wbin:/mnt/c/Program Files/Zulu/zulu-21/bin/:/mnt/c/windows/system32:/mnt/c/windows:/mnt/c/windows/System32/Wbem:/mnt/c/windows/System32/WindowsPowerShell/v1.0/:/mnt/c/windows/System32/OpenSSH/:/mnt/c/Program Files/Bandizip/:/mnt/c/Program Files/PowerShell/7/:/mnt/c/Program Files/Git/cmd:/mnt/c/Program Files/nodejs/:/mnt/c/Program Files/Rancher Desktop/resources/resources/win32/bin/:/mnt/c/Program Files/Rancher Desktop/resources/resources/win32/docker-cli-plugins/:/mnt/c/Program Files/Rancher Desktop/resources/resources/linux/bin/:/mnt/c/Program Files/Rancher Desktop/resources/resources/linux/docker-cli-plugins/:/mnt/c/Program Files/Amazon/AWSCLIV2/:/mnt/c/Users/User/AppData/Local/Programs/Python/Python313:/mnt/c/Users/User/AppData/Local/Programs/Python/Python313/Scripts:/mnt/c/myData/util/apache-maven-3.9.11/bin:/mnt/c/Program Files/dotnet/:/mnt/c/Program Files/Vim/vim91:/mnt/c/ProgramData/chocolatey/bin:/mnt/c/Program Files (x86)/dotnet/:/mnt/c/Users/User/.local/bin:/mnt/c/Users/User/AppData/Local/Programs/Python/Launcher/:/mnt/c/Users/User/AppData/Local/Microsoft/WindowsApps:/mnt/c/Users/User/AppData/Local/Programs/Microsoft VS Code/bin:/mnt/c/Users/User/AppData/Roaming/npm:/mnt/c/Program Files/JetBrains/IntelliJ IDEA 2025.2/bin:/mnt/c/Program Files (x86)/Nmap:/mnt/d/2_Codes/util:/mnt/c/Users/User/.dotnet/tools:/mnt/c/myData/util/platform-tools:/mnt/c/Users/User/AppData/Local/Programs/Kiro/bin:/snap/bin:/home/USER/.local/bin"
QTERM_SESSION_ID = "d545156d8b1d4755b1efed33dba8cae5"
Q_SET_PARENT_CHECK = "1"
Q_TERM = "1.26.2"
SHELL = "/bin/bash"
TERM = "xterm-256color"