[Bug] SyntaxError: Unexpected end of JSON input

[dadadan23]

Describe the bug
In our Azure DevOps Pipeline, we are trying to specify the path to an externalized GitVersion.yaml which is in the Resources repo we also use for ADO templates.

When we specify the configFilePath to the yaml, we receive the error:
##[error]SyntaxError: Unexpected end of JSON input

I can confirm the file is physically available in the working directory and also the GitVersion.yaml works on my local macbook without issues.

We are running on a self-managed linux vm

Expected Behavior

We would expect the extension to be able to take the input for the location where the configuration file is located, read it, and use it during the pipeline duration.

Actual Behavior

We receive an error:
##[error]SyntaxError: Unexpected end of JSON input

Full log output of task:

starting: Execute GitVersion
==============================================================================
Task         : Execute GitVersion Task
Description  : Easy Semantic Versioning (http://semver.org) for projects using Git
Version      : 0.9.9
Author       : GitTools Contributors
Help         : See the [documentation](https://gitversion.net/docs/) for help
==============================================================================
Command: dotnet-gitversion /home/azureado/agent/_work/6/s /output json /output buildserver /config /home/azureado/agent/_work/6/s/ado-templates/vars/GitVersion.yml
/home/azureado/agent/_work/_tool/GitVersion.Tool/5.6.9/x64/dotnet-gitversion /home/azureado/agent/_work/6/s /output json /output buildserver /config /home/azureado/agent/_work/6/s/ado-templates/vars/GitVersion.yml
Cannot find the .git directory
INFO [05/13/21 19:24:29:60] Working directory: /home/azureado/agent/_work/6/s
INFO [05/13/21 19:24:29:64] Done writing 
##[error]SyntaxError: Unexpected end of JSON input
Finishing: Execute GitVersion

Possible Fix

The only workaround we have is to commit the GitVersion.yaml directly into the repo being built.
So far, have not found any way to get an external file to read successfully

Steps to Reproduce

- stage: DetermineVersion
  jobs:
  - job: ExecuteGitVersion
    workspace:
      clean: all
    steps:
      - checkout: self
      - checkout: templates
      - task: gitversion/setup@0
        inputs:
          versionSpec: '5.6.x'
      - task: gitversion/execute@0
        displayName: Execute GitVersion
        name: Version
        inputs:
          useConfigFile: true
          configFilePath: '$(Build.SourcesDirectory)/$(reponame)/GitVersion.yml' 

The contents of GitVersion.yaml:
branches:
  main:
    regex: ^master$|^main$
    mode: ContinuousDelivery
    tag: ''
    increment: Patch
    prevent-increment-of-merged-branch-version: true
    track-merge-target: false
    tracks-release-branches: true
    is-release-branch: false
  release:
    regex: ^releases?[/-]
    mode: ContinuousDelivery
    tag: ''
    increment: Patch
    prevent-increment-of-merged-branch-version: true
    track-merge-target: false
    tracks-release-branches: false
    is-release-branch: true
    pre-release-weight: 1000
  feature:
    regex: ^features?[/-]
    mode: ContinuousDelivery
    tag: useBranchName
    increment: Inherit
    prevent-increment-of-merged-branch-version: false
    track-merge-target: false
    tracks-release-branches: false
    is-release-branch: false
  pull-request:
    regex: ^(pull|pull\-requests|pr)[/-]
    mode: ContinuousDelivery
    tag: PullRequest
    increment: Inherit
    prevent-increment-of-merged-branch-version: false
    tag-number-pattern: '[/-](?<number>\d+)[-/]'
    track-merge-target: false
    tracks-release-branches: false
    is-release-branch: false
  hotfix:
    regex: ^hotfix(es)?[/-]
    mode: ContinuousDelivery
    tag: beta
    increment: Patch
    prevent-increment-of-merged-branch-version: false
    track-merge-target: false
    tracks-release-branches: false
    is-release-branch: false
  support:
    regex: ^support[/-]
    mode: ContinuousDelivery
    tag: ''
    increment: Patch
    prevent-increment-of-merged-branch-version: true
    track-merge-target: false
    tracks-release-branches: false
    is-release-branch: false
  develop:
    regex: ^dev(elop)?(ment)?$
    mode: ContinuousDeployment
    tag: unstable
    increment: Minor
    prevent-increment-of-merged-branch-version: false
    track-merge-target: true
    tracks-release-branches: true
    is-release-branch: false

Context

We are trying to tune gitversion to provide semantic versions differently than the plugin defaults, so we can control the versioning increment as desired by our organization. Without this, we are getting alpha and beta tags on our releases, which is not desired.

Your Environment

• Version Used:
  GitVersion Task version: 0.9.9, GitVersion.Tool 5.6.9 x64

ADO agent version 2.184.2
Linux, CentOS 7

[asbjornu]

Perhaps related to #2567.

[cytron201]

I am having exactly the same issue. Cannot find the .git directory and Unexpected end of JSON.

I've narrowed it down to be because of using the following in the pipeline for the job that calculates version:
- checkout: none
persistCredentials: "true"

Of course by not checking out, it wont even sync to a git repository, so the .git folder stays empty. The reason it was working sometimes and not others for us, was because some of our Azure DevOps agents still had the workspace mapped from a previous build of the same repository (pre breaking changes), therefore meaning the .git folder was already present.

[xsurfer]

I am facing the same issue. Any idea how to solve it or troubleshoot it? Thanks

UPDATE - I manage to solve it: an existing release branch had wrong name (v1.0.0.0). I deleted the branch and the task run successfully

[SphenicPaul]

I've hit a similar, error message today - Possible workaround (if related) is to fix/specify the versionSpec to a working version (e.g. 5.9.0) as mentioned in #3007. This seems to have resolved this error for me in the short term.

[astro-phage]

Version 5.9.0 didn't work for me with self-hosted agents. Version 5.10.1 does work for me. See also [Bug] Version 5.10 is causing "SyntaxError: Unexpected end of JSON input" error

Example azure-pipelines.yml

steps:
  - task: gitversion/setup@0
    inputs:
      versionSpec: '5.10.1'

[arefworks]

Im using version 5.10.3 and im getting the same issue

   at LibGit2Sharp.Core.LazyGroup`1.Dependent`2.Evaluate() in /_/LibGit2Sharp/Core/LazyGroup.cs:line 80
   at LibGit2Sharp.Core.LazyGroup`1.Dependent`2.get_Value() in /_/LibGit2Sharp/Core/LazyGroup.cs:line 73
   at LibGit2Sharp.Commit.get_Committer() in /_/LibGit2Sharp/Commit.cs:line 87
   at GitVersion.Commit..ctor(Commit innerCommit) in D:\a\GitVersion\GitVersion\src\GitVersion.LibGit2Sharp\Git\Commit.cs:line 17
   at GitVersion.Commit.<>c.<.ctor>b__3_0(Commit parent) in D:\a\GitVersion\GitVersion\src\GitVersion.LibGit2Sharp\Git\Commit.cs:line 16
   at System.Linq.Enumerable.SelectEnumerableIterator`2.MoveNext()
   at System.Linq.Enumerable.Count[TSource](IEnumerable`1 source)
   at GitVersion.Configuration.BranchConfigurationCalculator.InheritBranchConfiguration(Int32 recursions, IBranch targetBranch, BranchConfig branchConfiguration, ICommit currentCommit, Config configuration, IList`1 excludedInheritBranches) in D:\a\GitVersion\GitVersion\src\GitVersion.Core\Configuration\BranchConfigurationCalculator.cs:line 77
   at GitVersion.Configuration.BranchConfigurationCalculator.GetBranchConfigurationInternal(Int32 recursions, IBranch targetBranch, ICommit currentCommit, Config configuration, IList`1 excludedInheritBranches) in D:\a\GitVersion\GitVersion\src\GitVersion.Core\Configuration\BranchConfigurationCalculator.cs:line 54
   at GitVersion.Configuration.BranchConfigurationCalculator.GetBranchConfiguration(IBranch targetBranch, ICommit currentCommit, Config configuration, IList`1 excludedInheritBranches) in D:\a\GitVersion\GitVersion\src\GitVersion.Core\Configuration\BranchConfigurationCalculator.cs:line 28
   at GitVersion.GitVersionContextFactory.Create(GitVersionOptions gitVersionOptions) in D:\a\GitVersion\GitVersion\src\GitVersion.Core\Core\GitVersionContextFactory.cs:line 39
   at GitVersion.GitVersionCoreModule.<>c__DisplayClass0_0.<RegisterTypes>b__1() in D:\a\GitVersion\GitVersion\src\GitVersion.Core\GitVersionCoreModule.cs:line 37
   at System.Lazy`1.ViaFactory(LazyThreadSafetyMode mode)
   at System.Lazy`1.ExecutionAndPublication(LazyHelper executionAndPublication, Boolean useDefaultConstructor)
   at System.Lazy`1.CreateValue()
   at System.Lazy`1.get_Value()
   at GitVersion.VersionCalculation.NextVersionCalculator.get_context() in D:\a\GitVersion\GitVersion\src\GitVersion.Core\VersionCalculation\NextVersionCalculator.cs:line 15
   at GitVersion.VersionCalculation.NextVersionCalculator.FindVersion() in D:\a\GitVersion\GitVersion\src\GitVersion.Core\VersionCalculation\NextVersionCalculator.cs:line 30
   at GitVersion.GitVersionCalculateTool.CalculateVersionVariables() in D:\a\GitVersion\GitVersion\src\GitVersion.Core\Core\GitVersionCalculateTool.cs:line 52
   at GitVersion.GitVersionExecutor.RunGitVersionTool(GitVersionOptions gitVersionOptions) in D:\a\GitVersion\GitVersion\src\GitVersion.App\GitVersionExecutor.cs:line 66
  INFO [09/10/22 6:14:52:39] Attempting to show the current git graph (please include in issue): 
  INFO [09/10/22 6:14:52:39] Showing max of 100 commits
  INFO [09/10/22 6:14:52:42] * 334fe5b 8 minutes ago  (grafted, HEAD -> feature/NL-8-stroybook-pipeline-AK, origin/334fe5b27bd62651df8e3471cfa9d5967f770f86, 334fe5b27bd62651df8e3471cfa9d5967f770f86)

  INFO [09/10/22 6:14:52:44] Done writing 
##[error]SyntaxError: Unexpected end of JSON input

[SphenicPaul]

I've hit this issue again today on GitVersion v5.9.0 and also tried v5.10.3 (and an older v5.7.0) - All hit the Unexpected end of JSON input error.

Oddly, I've only hit this issue on a couple of repos that I've created today in Azure DevOps Services - Other builds that were using GitVersion v5.9.0 were working OK and have been for a while since my previous post in this thread.

Given that it only seemed to be impacting the new repos and the error message also seemed to state that it couldn't find the initial/first commit, I'd been able to create a new repo in Azure DevOps, initialize it locally/offline then push a commit back to the remote, Azure DevOps repo - I noted that GitVersion did work sucessfully in the build on the initial/single commit, but then failed once a second commit was added to the master branch.

I'm not clear how to resolve this for these new repos at present, and am unclear why this isn't also impacting the older/existing repos that use the same build templates that make use of the same version of GitVersion (existing repos/builds work on v5.9.0 and v5.10.3, but new repos fail on both).

I can only think it's something in GitVersion potentially not supporting a later/newer version of Git, perhaps (I'm now using Git 2.37.2.windows.2 locally and Azure DevOps, hosted build pool is using Git 2.37.3), but possibly steming/caused from/by the initial creation/initialization of the repo, rather than something post-creation...not sure?!

Any help/suggestions would be appreciated.

Build Log Following 2nd Commit, using v5.10.3 (Checkout task):

2022-09-10T14:02:54.9289360Z ##[section]Starting: Checkout aa.TestTerraformRepo2@master to s
2022-09-10T14:02:54.9294503Z ==============================================================================
2022-09-10T14:02:54.9294768Z Task         : Get sources
2022-09-10T14:02:54.9295033Z Description  : Get sources from a repository. Supports Git, TfsVC, and SVN repositories.
2022-09-10T14:02:54.9295292Z Version      : 1.0.0
2022-09-10T14:02:54.9295457Z Author       : Microsoft
2022-09-10T14:02:54.9296147Z Help         : [More Information](https://go.microsoft.com/fwlink/?LinkId=798199)
2022-09-10T14:02:54.9296456Z ==============================================================================
2022-09-10T14:02:55.3693861Z Syncing repository: aa.TestTerraformRepo2 (Git)
2022-09-10T14:02:56.0678276Z ##[command]git version
2022-09-10T14:02:56.4330181Z git version 2.37.3
2022-09-10T14:02:56.4352679Z ##[command]git lfs version
2022-09-10T14:02:57.2709054Z git-lfs/3.2.0 (GitHub; linux amd64; go 1.18.2)
2022-09-10T14:02:57.2879136Z ##[command]git init "/home/vsts/work/1/s"
2022-09-10T14:02:57.3318932Z hint: Using 'master' as the name for the initial branch. This default branch name
2022-09-10T14:02:57.3331177Z hint: is subject to change. To configure the initial branch name to use in all
2022-09-10T14:02:57.3331763Z hint: of your new repositories, which will suppress this warning, call:
2022-09-10T14:02:57.3332144Z hint: 
2022-09-10T14:02:57.3332831Z hint: 	git config --global init.defaultBranch <name>
2022-09-10T14:02:57.3333212Z hint: 
2022-09-10T14:02:57.3333764Z hint: Names commonly chosen instead of 'master' are 'main', 'trunk' and
2022-09-10T14:02:57.3334422Z hint: 'development'. The just-created branch can be renamed via this command:
2022-09-10T14:02:57.3334813Z hint: 
2022-09-10T14:02:57.3335230Z hint: 	git branch -m <name>
2022-09-10T14:02:57.3335587Z Initialized empty Git repository in /home/vsts/work/1/s/.git/
2022-09-10T14:02:57.3367991Z ##[command]git remote add origin https://someorg@dev.azure.com/someorg/SomeOrg.Dev/_git/aa.TestTerraformRepo2
2022-09-10T14:02:57.3503322Z ##[command]git config gc.auto 0
2022-09-10T14:02:57.3520763Z ##[command]git config --get-all http.https://someorg@dev.azure.com/someorg/SomeOrg.Dev/_git/aa.TestTerraformRepo2.extraheader
2022-09-10T14:02:57.3790357Z ##[command]git config --get-all http.extraheader
2022-09-10T14:02:57.3821510Z ##[command]git config --get-regexp .*extraheader
2022-09-10T14:02:57.3852342Z ##[command]git config --get-all http.proxy
2022-09-10T14:02:57.3889571Z ##[command]git config http.version HTTP/1.1
2022-09-10T14:02:57.3958095Z ##[command]git --config-env=http.extraheader=env_var_http.extraheader fetch --force --tags --prune --prune-tags --progress --no-recurse-submodules origin --depth=1 +0cc23883b1010cb85e812b8c326e74e2916411ad:refs/remotes/origin/0cc23883b1010cb85e812b8c326e74e2916411ad
2022-09-10T14:02:57.8616701Z remote: Azure Repos        
2022-09-10T14:02:57.8618812Z remote: 
2022-09-10T14:02:57.8619995Z remote: Found 5 objects to send. (32 ms)        
2022-09-10T14:02:57.8629558Z From https://dev.azure.com/someorg/SomeOrg.Dev/_git/aa.TestTerraformRepo2
2022-09-10T14:02:57.8646139Z  * [new ref]         0cc23883b1010cb85e812b8c326e74e2916411ad -> origin/0cc23883b1010cb85e812b8c326e74e2916411ad
2022-09-10T14:02:57.9091663Z ##[command]git --config-env=http.extraheader=env_var_http.extraheader fetch --force --tags --prune --prune-tags --progress --no-recurse-submodules origin --depth=1 +0cc23883b1010cb85e812b8c326e74e2916411ad
2022-09-10T14:02:58.1470408Z remote: Azure Repos        
2022-09-10T14:02:58.1470889Z remote: 
2022-09-10T14:02:58.1471495Z remote: Found 0 objects to send. (17 ms)        
2022-09-10T14:02:58.1472301Z From https://dev.azure.com/someorg/SomeOrg.Dev/_git/aa.TestTerraformRepo2
2022-09-10T14:02:58.1490381Z  * branch            0cc23883b1010cb85e812b8c326e74e2916411ad -> FETCH_HEAD
2022-09-10T14:02:58.1878613Z ##[command]git checkout --progress --force refs/remotes/origin/0cc23883b1010cb85e812b8c326e74e2916411ad
2022-09-10T14:02:58.1884276Z Note: switching to 'refs/remotes/origin/0cc23883b1010cb85e812b8c326e74e2916411ad'.
2022-09-10T14:02:58.1885089Z 
2022-09-10T14:02:58.1885546Z You are in 'detached HEAD' state. You can look around, make experimental
2022-09-10T14:02:58.1885935Z changes and commit them, and you can discard any commits you make in this
2022-09-10T14:02:58.1886302Z state without impacting any branches by switching back to a branch.
2022-09-10T14:02:58.1886481Z 
2022-09-10T14:02:58.1886747Z If you want to create a new branch to retain commits you create, you may
2022-09-10T14:02:58.1887263Z do so (now or later) by using -c with the switch command. Example:
2022-09-10T14:02:58.1887429Z 
2022-09-10T14:02:58.1887782Z   git switch -c <new-branch-name>
2022-09-10T14:02:58.1888000Z 
2022-09-10T14:02:58.1888225Z Or undo this operation with:
2022-09-10T14:02:58.1888343Z 
2022-09-10T14:02:58.1888657Z   git switch -
2022-09-10T14:02:58.1888755Z 
2022-09-10T14:02:58.1889046Z Turn off this advice by setting config variable advice.detachedHead to false
2022-09-10T14:02:58.1889235Z 
2022-09-10T14:02:58.1889454Z HEAD is now at 0cc2388 Added test.txt
2022-09-10T14:02:58.1891714Z ##[command]git config http.https://someorg@dev.azure.com/someorg/SomeOrg.Dev/_git/aa.TestTerraformRepo2.extraheader "AUTHORIZATION: placeholder_7ffda57e-e055-407e-86b5-ea409f4f5a30"
2022-09-10T14:02:58.1935769Z ##[section]Finishing: Checkout aa.TestTerraformRepo2@master to s

Build Log Following 2nd Commit (same build as above), using v5.10.3 (GitVersion task - FAILS):

2022-09-10T14:03:06.1222692Z ##[section]Starting: GitVersion - Execute
2022-09-10T14:03:06.1229837Z ==============================================================================
2022-09-10T14:03:06.1230122Z Task         : Execute GitVersion Task
2022-09-10T14:03:06.1230406Z Description  : Easy Semantic Versioning (http://semver.org) for projects using Git
2022-09-10T14:03:06.1230649Z Version      : 0.9.13
2022-09-10T14:03:06.1230850Z Author       : GitTools Contributors
2022-09-10T14:03:06.1231130Z Help         : See the [documentation](https://gitversion.net/docs/) for help
2022-09-10T14:03:06.1231439Z ==============================================================================
2022-09-10T14:03:06.3102197Z Command: dotnet-gitversion /home/vsts/work/1/s /output json /output buildserver
2022-09-10T14:03:06.3116117Z [command]/opt/hostedtoolcache/GitVersion.Tool/5.10.3/x64/dotnet-gitversion /home/vsts/work/1/s /output json /output buildserver
2022-09-10T14:03:06.7903847Z   ERROR [09/10/22 14:03:06:72] An unexpected error occurred:
2022-09-10T14:03:06.7904836Z INFO [09/10/22 14:03:06:52] Working directory: /home/vsts/work/1/s
2022-09-10T14:03:06.7907111Z GitVersion.GitVersionException: Cannot find commit 0cc2388 Added test.txt. Please ensure that the repository is an unshallow clone with `git fetch --unshallow`.
2022-09-10T14:03:06.7907691Z INFO [09/10/22 14:03:06:55] Project root is: /home/vsts/work/1/s/
2022-09-10T14:03:06.7909283Z  ---> LibGit2Sharp.NotFoundException: object not found - no match for id (1e277a5031a279ff45d9acd8d0f132083a17523f)
2022-09-10T14:03:06.7909758Z INFO [09/10/22 14:03:06:55] DotGit directory is: /home/vsts/work/1/s/.git
2022-09-10T14:03:06.7910979Z    at LibGit2Sharp.Core.Ensure.HandleError(Int32 result) in /_/LibGit2Sharp/Core/Ensure.cs:line 154
2022-09-10T14:03:06.7911720Z INFO [09/10/22 14:03:06:55] Branch from build environment: refs/heads/master
2022-09-10T14:03:06.7912925Z    at LibGit2Sharp.Core.Ensure.ZeroResult(Int32 result) in /_/LibGit2Sharp/Core/Ensure.cs:line 172
2022-09-10T14:03:06.7913657Z INFO [09/10/22 14:03:06:55] Begin: Normalizing git directory for branch 'refs/heads/master'
2022-09-10T14:03:06.7914972Z    at LibGit2Sharp.Core.Proxy.git_revwalk_next(RevWalkerHandle walker) in /_/LibGit2Sharp/Core/Proxy.cs:line 2774
2022-09-10T14:03:06.7915789Z   INFO [09/10/22 14:03:06:58] One remote found (origin -> 'https://someorg@dev.azure.com/someorg/SomeOrg.Dev/_git/aa.TestTerraformRepo2').
2022-09-10T14:03:06.7917090Z    at LibGit2Sharp.CommitLog.CommitEnumerator.MoveNext() in /_/LibGit2Sharp/CommitLog.cs:line 140
2022-09-10T14:03:06.7917794Z   INFO [09/10/22 14:03:06:58] Skipping fetching, if GitVersion does not calculate your version as expected you might need to allow fetching or use dynamic repositories
2022-09-10T14:03:06.7918892Z   INFO [09/10/22 14:03:06:59] Creating local branch master
2022-09-10T14:03:06.7919467Z    at System.Linq.Enumerable.SelectEnumerableIterator`2.MoveNext()
2022-09-10T14:03:06.7920408Z   INFO [09/10/22 14:03:06:61] Creating local branch from remote tracking 'refs/remotes/origin/0cc23883b1010cb85e812b8c326e74e2916411ad'.
2022-09-10T14:03:06.7921666Z    at System.Linq.Enumerable.TryGetFirst[TSource](IEnumerable`1 source, Func`2 predicate, Boolean& found)
2022-09-10T14:03:06.7922341Z   INFO [09/10/22 14:03:06:62] HEAD points at branch 'refs/heads/master'.
2022-09-10T14:03:06.7923525Z    at System.Linq.Enumerable.First[TSource](IEnumerable`1 source, Func`2 predicate)
2022-09-10T14:03:06.7924234Z   INFO [09/10/22 14:03:06:62] End: Normalizing git directory for branch 'refs/heads/master' (Took: 77.91ms)
2022-09-10T14:03:06.7925527Z    at GitVersion.RepositoryStore.GetBaseVersionSource(ICommit currentBranchTip) in D:\a\GitVersion\GitVersion\src\GitVersion.Core\Core\RepositoryStore.cs:line 67
2022-09-10T14:03:06.7926094Z   INFO [09/10/22 14:03:06:63] Begin: Loading version variables from disk cache
2022-09-10T14:03:06.7927310Z    --- End of inner exception stack trace ---
2022-09-10T14:03:06.7927845Z     INFO [09/10/22 14:03:06:63] Cache file /home/vsts/work/1/s/.git/gitversion_cache/7EBCF5AFDF2C95AD6C84E0A4628038FD07FFD924.yml not found.
2022-09-10T14:03:06.7929002Z   INFO [09/10/22 14:03:06:63] End: Loading version variables from disk cache (Took: 0.34ms)
2022-09-10T14:03:06.7929584Z   INFO [09/10/22 14:03:06:64] Using latest commit on specified branch
2022-09-10T14:03:06.7930053Z   INFO [09/10/22 14:03:06:67] Running against branch: master (0cc2388 Added test.txt)
2022-09-10T14:03:06.7930508Z   INFO [09/10/22 14:03:06:67] Begin: Calculating base versions
2022-09-10T14:03:06.7931004Z   INFO [09/10/22 14:03:06:69] End: Calculating base versions (Took: 17.91ms)
2022-09-10T14:03:06.7931441Z   INFO [09/10/22 14:03:06:72] Attempting to show the current git graph (please include in issue): 
2022-09-10T14:03:06.7931915Z   INFO [09/10/22 14:03:06:72] Showing max of 100 commits
2022-09-10T14:03:06.7933054Z   INFO [09/10/22 14:03:06:76] * 0cc2388 39 seconds ago  (grafted, HEAD -> master, origin/0cc23883b1010cb85e812b8c326e74e2916411ad, 0cc23883b1010cb85e812b8c326e74e2916411ad)
2022-09-10T14:03:06.7933449Z 
2022-09-10T14:03:06.7933929Z INFO [09/10/22 14:03:06:47] Applicable build agent found: 'AzurePipelines'.
2022-09-10T14:03:06.7934386Z INFO [09/10/22 14:03:06:52] Working directory: /home/vsts/work/1/s
2022-09-10T14:03:06.7934803Z INFO [09/10/22 14:03:06:55] Project root is: /home/vsts/work/1/s/
2022-09-10T14:03:06.7935225Z INFO [09/10/22 14:03:06:55] DotGit directory is: /home/vsts/work/1/s/.git
2022-09-10T14:03:06.7935624Z INFO [09/10/22 14:03:06:55] Branch from build environment: refs/heads/master
2022-09-10T14:03:06.7936273Z INFO [09/10/22 14:03:06:55] Begin: Normalizing git directory for branch 'refs/heads/master'
2022-09-10T14:03:06.7937082Z   INFO [09/10/22 14:03:06:58] One remote found (origin -> 'https://someorg@dev.azure.com/someorg/SomeOrg.Dev/_git/aa.TestTerraformRepo2').
2022-09-10T14:03:06.7937981Z   INFO [09/10/22 14:03:06:58] Skipping fetching, if GitVersion does not calculate your version as expected you might need to allow fetching or use dynamic repositories
2022-09-10T14:03:06.7938539Z   INFO [09/10/22 14:03:06:59] Creating local branch master
2022-09-10T14:03:06.7939289Z   INFO [09/10/22 14:03:06:61] Creating local branch from remote tracking 'refs/remotes/origin/0cc23883b1010cb85e812b8c326e74e2916411ad'.
2022-09-10T14:03:06.7939939Z   INFO [09/10/22 14:03:06:62] HEAD points at branch 'refs/heads/master'.
2022-09-10T14:03:06.7940611Z   INFO [09/10/22 14:03:06:62] End: Normalizing git directory for branch 'refs/heads/master' (Took: 77.91ms)
2022-09-10T14:03:06.7941107Z   INFO [09/10/22 14:03:06:63] Begin: Loading version variables from disk cache
2022-09-10T14:03:06.7941651Z     INFO [09/10/22 14:03:06:63] Cache file /home/vsts/work/1/s/.git/gitversion_cache/7EBCF5AFDF2C95AD6C84E0A4628038FD07FFD924.yml not found.
2022-09-10T14:03:06.7942218Z   INFO [09/10/22 14:03:06:63] End: Loading version variables from disk cache (Took: 0.34ms)
2022-09-10T14:03:06.7942629Z   INFO [09/10/22 14:03:06:64] Using latest commit on specified branch
2022-09-10T14:03:06.7943117Z   INFO [09/10/22 14:03:06:67] Running against branch: master (0cc2388 Added test.txt)
2022-09-10T14:03:06.7943800Z    at GitVersion.RepositoryStore.GetBaseVersionSource(ICommit currentBranchTip) in D:\a\GitVersion\GitVersion\src\GitVersion.Core\Core\RepositoryStore.cs:line 71
2022-09-10T14:03:06.7947233Z    at GitVersion.VersionCalculation.FallbackVersionStrategy.GetVersions()+MoveNext() in D:\a\GitVersion\GitVersion\src\GitVersion.Core\VersionCalculation\BaseVersionCalculators\FallbackVersionStrategy.cs:line 23
2022-09-10T14:03:06.7948246Z    at GitVersion.VersionCalculation.BaseVersionCalculator.GetBaseVersions(IVersionStrategy strategy)+MoveNext() in D:\a\GitVersion\GitVersion\src\GitVersion.Core\VersionCalculation\BaseVersionCalculator.cs:line 102
2022-09-10T14:03:06.7948939Z    at System.Collections.Generic.List`1..ctor(IEnumerable`1 collection)
2022-09-10T14:03:06.7949561Z    at GitVersion.VersionCalculation.BaseVersionCalculator.GetBaseVersion() in D:\a\GitVersion\GitVersion\src\GitVersion.Core\VersionCalculation\BaseVersionCalculator.cs:line 31
2022-09-10T14:03:06.7950456Z    at GitVersion.VersionCalculation.NextVersionCalculator.FindVersion() in D:\a\GitVersion\GitVersion\src\GitVersion.Core\VersionCalculation\NextVersionCalculator.cs:line 52
2022-09-10T14:03:06.7951596Z    at GitVersion.GitVersionCalculateTool.CalculateVersionVariables() in D:\a\GitVersion\GitVersion\src\GitVersion.Core\Core\GitVersionCalculateTool.cs:line 52
2022-09-10T14:03:06.7952361Z    at GitVersion.GitVersionExecutor.RunGitVersionTool(GitVersionOptions gitVersionOptions) in D:\a\GitVersion\GitVersion\src\GitVersion.App\GitVersionExecutor.cs:line 66
2022-09-10T14:03:06.7952994Z   INFO [09/10/22 14:03:06:67] Begin: Calculating base versions
2022-09-10T14:03:06.7953454Z   INFO [09/10/22 14:03:06:69] End: Calculating base versions (Took: 17.91ms)
2022-09-10T14:03:06.7953890Z   ERROR [09/10/22 14:03:06:72] An unexpected error occurred:
2022-09-10T14:03:06.7954734Z GitVersion.GitVersionException: Cannot find commit 0cc2388 Added test.txt. Please ensure that the repository is an unshallow clone with `git fetch --unshallow`.
2022-09-10T14:03:06.7955584Z  ---> LibGit2Sharp.NotFoundException: object not found - no match for id (1e277a5031a279ff45d9acd8d0f132083a17523f)
2022-09-10T14:03:06.7956141Z    at LibGit2Sharp.Core.Ensure.HandleError(Int32 result) in /_/LibGit2Sharp/Core/Ensure.cs:line 154
2022-09-10T14:03:06.7956809Z    at LibGit2Sharp.Core.Ensure.ZeroResult(Int32 result) in /_/LibGit2Sharp/Core/Ensure.cs:line 172
2022-09-10T14:03:06.7957360Z    at LibGit2Sharp.Core.Proxy.git_revwalk_next(RevWalkerHandle walker) in /_/LibGit2Sharp/Core/Proxy.cs:line 2774
2022-09-10T14:03:06.7958825Z    at LibGit2Sharp.CommitLog.CommitEnumerator.MoveNext() in /_/LibGit2Sharp/CommitLog.cs:line 140
2022-09-10T14:03:06.7959526Z    at System.Linq.Enumerable.SelectEnumerableIterator`2.MoveNext()
2022-09-10T14:03:06.7960701Z    at System.Linq.Enumerable.TryGetFirst[TSource](IEnumerable`1 source, Func`2 predicate, Boolean& found)
2022-09-10T14:03:06.7961223Z    at System.Linq.Enumerable.First[TSource](IEnumerable`1 source, Func`2 predicate)
2022-09-10T14:03:06.7961803Z    at GitVersion.RepositoryStore.GetBaseVersionSource(ICommit currentBranchTip) in D:\a\GitVersion\GitVersion\src\GitVersion.Core\Core\RepositoryStore.cs:line 67
2022-09-10T14:03:06.7962548Z    --- End of inner exception stack trace ---
2022-09-10T14:03:06.7963097Z    at GitVersion.RepositoryStore.GetBaseVersionSource(ICommit currentBranchTip) in D:\a\GitVersion\GitVersion\src\GitVersion.Core\Core\RepositoryStore.cs:line 71
2022-09-10T14:03:06.7963935Z    at GitVersion.VersionCalculation.FallbackVersionStrategy.GetVersions()+MoveNext() in D:\a\GitVersion\GitVersion\src\GitVersion.Core\VersionCalculation\BaseVersionCalculators\FallbackVersionStrategy.cs:line 23
2022-09-10T14:03:06.7964867Z    at GitVersion.VersionCalculation.BaseVersionCalculator.GetBaseVersions(IVersionStrategy strategy)+MoveNext() in D:\a\GitVersion\GitVersion\src\GitVersion.Core\VersionCalculation\BaseVersionCalculator.cs:line 102
2022-09-10T14:03:06.7965562Z    at System.Collections.Generic.List`1..ctor(IEnumerable`1 collection)
2022-09-10T14:03:06.7966221Z    at GitVersion.VersionCalculation.BaseVersionCalculator.GetBaseVersion() in D:\a\GitVersion\GitVersion\src\GitVersion.Core\VersionCalculation\BaseVersionCalculator.cs:line 31
2022-09-10T14:03:06.7967030Z    at GitVersion.VersionCalculation.NextVersionCalculator.FindVersion() in D:\a\GitVersion\GitVersion\src\GitVersion.Core\VersionCalculation\NextVersionCalculator.cs:line 52
2022-09-10T14:03:06.7967758Z    at GitVersion.GitVersionCalculateTool.CalculateVersionVariables() in D:\a\GitVersion\GitVersion\src\GitVersion.Core\Core\GitVersionCalculateTool.cs:line 52
2022-09-10T14:03:06.7968520Z    at GitVersion.GitVersionExecutor.RunGitVersionTool(GitVersionOptions gitVersionOptions) in D:\a\GitVersion\GitVersion\src\GitVersion.App\GitVersionExecutor.cs:line 66
2022-09-10T14:03:06.7969152Z   INFO [09/10/22 14:03:06:72] Attempting to show the current git graph (please include in issue): 
2022-09-10T14:03:06.7969685Z   INFO [09/10/22 14:03:06:72] Showing max of 100 commits
2022-09-10T14:03:06.7970530Z   INFO [09/10/22 14:03:06:76] * 0cc2388 39 seconds ago  (grafted, HEAD -> master, origin/0cc23883b1010cb85e812b8c326e74e2916411ad, 0cc23883b1010cb85e812b8c326e74e2916411ad)
2022-09-10T14:03:06.7970872Z 
2022-09-10T14:03:06.7971167Z   INFO [09/10/22 14:03:06:78] Done writing 
2022-09-10T14:03:06.7999606Z ##[error]SyntaxError: Unexpected end of JSON input
2022-09-10T14:03:06.8011342Z ##[section]Finishing: GitVersion - Execute
``

[asbjornu]

@SphenicPaul, the argument --depth=1 makes the repository being cloned a shallow clone, which will cause GitVersion to crash. When GitVersion crashes and outputs an exception instead of valid JSON, the AzDO Task and GitHub Action will mask the error by instead throwing the Unexpected end of JSON input error. Please see #3091 (comment) for how to do a full clone in AzDO.

[SphenicPaul]

Thanks @asbjornu - that link and solution has been able to resolve/workaround the problem I was hitting.

Much appreciated.