Crash when a file cannot be read

[scovetta]

Describe the bug
Here is a stack trace:

2020-02-28T06:27:16 1 ERROR - Runtime error: The file cannot be accessed by the system. : 'C:\users\scovetta\source\repos\x\venv\bin\python'    at System.IO.FileStream.ValidateFileHandle(SafeFileHandle fileHandle)
   at System.IO.FileStream.CreateFileOpenHandle(FileMode mode, FileShare share, FileOptions options)
   at System.IO.FileStream..ctor(String path, FileMode mode, FileAccess access, FileShare share, Int32 bufferSize, FileOptions options)
   at System.IO.FileStream..ctor(String path, FileMode mode, FileAccess access, FileShare share, Int32 bufferSize)
   at System.IO.File.ReadAllBytes(String path)
   at MultiExtractor.MiniMagic.DetectFileType(String filename)
   at Microsoft.AppInspector.AnalyzeCommand.Run()
   at Microsoft.AppInspector.Program.RunAnalyzeCommand(AnalyzeCommandOptions opts)
   at Microsoft.AppInspector.Program.<>c.<Main>b__6_0(AnalyzeCommandOptions opts)
   at CommandLine.ParserResultExtensions.MapResult[T1,T2,T3,T4,T5,TResult](ParserResult`1 result, Func`2 parsedFunc1, Func`2 parsedFunc2, Func`2 parsedFunc3, Func`2 parsedFunc4, Func`2 parsedFunc5, Func`2 notParsedFunc)
   at Microsoft.AppInspector.Program.Main(String[] args)

That file may be open, in which case for that or any other similar error, I'd expect the app to fail gracefully.

To Reproduce
Steps to reproduce the behavior:

1. Go to '...'
2. Click on '....'
3. Scroll down to '....'
4. See error

Expected behavior
I should get a warning about the file not being analyzable.

Desktop (please complete the following information):

• OS: [e.g. iOS] - Windows 10
• Browser [e.g. chrome, safari] n/a
• Version [e.g. 22] 1.0.27

Additional context
I happened to try