Issue on Azure Pipelines: failed to initialize terrascan 1.7.0

[iquijas]

• terrascan version: 1.7.0
• Operating System: Microsoft Hosted Agents for Azure Pipelines (Ubuntu 18.04 LTS)

### Description

As part of my pipeline definition, I install the latest terrascan version (1.7.0) in the agent and proceed to execute terrascan init & scan. Installation goes smoothly, but when terrascan init is executed the command crashes and the task is marked as error.

The only way I avoided this behavior is to install terrascan version 1.5.0 or earlier.

Thanks for your help/advice, Regards
Ignacio

### What I Did

In my pipeline I execute the following commands:

curl --location https://github.com/accurics/terrascan/releases/download/v1.7.0/terrascan_1.7.0_Linux_x86_64.tar.gz --output terrascan.tar.gz
tar -xf terrascan.tar.gz terrascan && rm terrascan.tar.gz
sudo install terrascan /usr/local/bin && rm terrascan
terrascan init -l debug

Terrascan init command fails, and the following error is generated:

2021-06-14T19:27:14.289Z debug cli/register.go:50 TERRASCAN_CONFIG:
2021-06-14T19:27:14.289Z debug config/config-reader.go:56 no config file specified
2021-06-14T19:27:14.289Z debug utils/policy.go:43 absolute rego_subdir path, /home/vsts/work/1/s/jumpbox/pkg/policies/opa/rego, does not fall under base repo path's /home/vsts/.terrascan directory structure
2021-06-14T19:27:14.289Z debug utils/policy.go:44 appending rego_subdir path: pkg/policies/opa/rego to the policy base path: /home/vsts/.terrascan. checking ...
2021-06-14T19:27:14.289Z debug config/global.go:118 global config loaded
2021-06-14T19:27:14.289Z debug initialize/run.go:39 initializing terrascan
2021-06-14T19:27:14.488Z debug initialize/run.go:68 downloading policies
2021-06-14T19:27:14.488Z debug initialize/run.go:70 base directory path : /home/vsts/.terrascan
2021-06-14T19:27:14.488Z debug initialize/run.go:71 policy directory path : /home/vsts/.terrascan/pkg/policies/opa/rego
2021-06-14T19:27:14.488Z debug initialize/run.go:72 policy repo url : https://github.com/accurics/terrascan.git
2021-06-14T19:27:14.488Z debug initialize/run.go:73 policy repo git branch : master
2021-06-14T19:27:14.488Z debug initialize/run.go:77 cloning terrascan repo at /home/vsts/.terrascan
fatal error: unexpected signal during runtime execution
[signal SIGSEGV: segmentation violation code=0x1 addr=0x63 pc=0x7f37a3db1448]

runtime stack:
runtime.throw(0x2c37ad2, 0x2a)
/usr/lib/go-1.15/src/runtime/panic.go:1116 +0x72
runtime.sigpanic()
/usr/lib/go-1.15/src/runtime/signal_unix.go:726 +0x4ac

[kanchwala-yusuf]

Hey @iquijas ,

Thanks for reporting this issue.

This issue looks similar to #835 .

One of our community members has also suggested a workaround for this:
#835 (comment)

Also, we are working on this and trying to figure out a solution for this problem.

[iquijas]

Thank you @kanchwala-yusuf ! I will look into that workaround!

[kanchwala-yusuf]

On digging a bit into this issue, it seems like an issue because of CGO. We have enabled CGO in terrascan due to a certain package dependency, have raised a #906 for fixing this issue.