Use local worker to support julia 1.6 and Windows

test/Logging.jl

@@ -211,49 +211,17 @@ using Pluto.WorkspaceManager: poll
     cleanup(🍭, notebook)
 
     @testset "Logging error fallback" begin
-        # This testset needs a separate server session to capture the process stderr (which
-        # is different from the notebook stderr)
+        # This testset needs to use a local worker to capture the worker stderr (which is
+        # different from the notebook stderr)
         🍍 = ServerSession()
+        🍍.options.evaluation.workspace_use_distributed = false
 
-        msg = if true
-            # Alternative 1: use a remote worker and capture stderr using redirect_stderr.
-            # The reason we cannot use the same session as above is that a Malt.Worker's
-            # stderr is bound to the local stderr when the worker is instantiated, which
-            # happens at the first call to update_run! with a given session and notebook.
-            # Since update_run! has been called several times above, the existing worker's
-            # stderr is already bound to the local TTY, and redirect_stderr won't change
-            # that. We need a new session such that we can instantiate a new worker within
-            # the redirect_stderr block. (An alternative would be to move this testset to
-            # the top of the file such that it gets the first call to update_run!, but it
-            # seems like a bad idea to have tests that may pass or fail depending on the
-            # order of the testsets.)
-            #
-            # This argument is specific to Malt. Distributed relays stderr differently.
-            🍍.options.evaluation.workspace_use_distributed = true
-
-            pipe = Pipe()
-            redirect_stderr(pipe) do
-                update_run!(🍍, notebook, notebook.cells[27:29])
-            end
-            t = Threads.@spawn read(pipe, String)
-            close(pipe)
-            fetch(t)
-        else
-            # Alternative 2: use a local worker and capture stderr using
-            # PlutoRunner.redirect_original_stderr. This avoids the complications due to
-            # stderr relaying between processes and Malt implementation details, but
-            # requires using a bespoke redirection function from PlutoRunner rather than
-            # Base.redirect_stderr.
-            🍍.options.evaluation.workspace_use_distributed = false
-
-            io = IOBuffer()
-            PlutoRunner.redirect_original_stderr(io) do
-                update_run!(🍍, notebook, notebook.cells[27:29])
-            end
-            msg_ = String(take!(io))
-            close(io)
-            msg_
+        io = IOBuffer()
+        PlutoRunner.redirect_original_stderr(io) do
+            update_run!(🍍, notebook, notebook.cells[27:29])
         end
+        msg = String(take!(io))
+        close(io)
 
         @test notebook.cells[27] |> noerror
         @test notebook.cells[28] |> noerror