more details on errors

[samuelcolvin]

to investigate #167.

DO NOT MERGE

[codecov]

Codecov Report

Merging #171 (4eecdcb) into main (57fbbe1) will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##              main      #171   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            6         6           
  Lines          375       375           
  Branches        79        79           
=========================================
  Hits           375       375           

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[samuelcolvin]

From this I've found the error details are:

_rust_notify.WatchfilesRustInternalError: Error creating watcher: Function not implemented (os error 38) - Error { kind: Io(Os { code: 38, kind: Unsupported, message: "Function not implemented" }), paths: [] }`

Can now catch this 🐛