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Building in batchmode after deleting a file completes the build successfully, but logs an error about the missing file

Build Pipeline


How to reproduce:
1. Open user-submitted project (Empty_Project_removefile)
2. Build the project
3. Close the project and delete the ClassToBeRemoved.cs and its meta file from Assets/TestAsm folder
4. Build the project in batchmode with the following arguments: -batchmode -quit -executeMethod BuildScript.BuildFromCommandLine
5. Once the build completes successfully check the Editor.log

Expected result: no errors are logged
Actual result: error CS2001: Source file `Assets/TestAsm/ClassToBeRemoved.cs' could not be found is logged

Reproducible with: 2018.3.0a6, 2018.4.10f1, 2019.2.8f1, 2019.3.0b5, 2020.1.0a7
Not reproducible with: 2017.4.32f1, 2018.3.0a5

  1. Response avatar

    Resolution Note:

    The only part that fails is the initial compile attempt. Later in the log, but before it calls into the user code, the asset database refreshes the assets and detects the deleted file, triggers a recompile which does succeed. Then continues on to build successfully. The log shows the recompile with the following lines:

    Refresh: trashing asset cf3ece5c714b9b943a973f5cd27039e5
    - Starting compile Library/ScriptAssemblies/TestAsm.dll
    - Finished compile Library/ScriptAssemblies/TestAsm.dll

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