Fix Core/Downgrade test failures: add using Dates, fix stdout capture

Project.toml

@@ -25,7 +25,7 @@ YAML = "ddb6d928-2868-570f-bddf-ab3f9cf99eb6"
 ExplicitImports = "1"
 HTTP = "1"
 JET = "0.9, 0.10, 0.11"
-JSON3 = "1"
+JSON3 = "1.1"
 JuliaFormatter = "2"
 LocalRegistry = "0.5"
 SafeTestsets = "0.0.1, 0.1, 1"

src/import_timing_analysis.jl

@@ -69,18 +69,22 @@ function analyze_import_timing_in_process(repo_path::String, package_name::Strin
 
             # Capture timing data in a structured way
             timing_data = []
-            raw_output = IOBuffer()
-
-            # Redirect stdout to capture the timing output
-            original_stdout = stdout
-            redirect_stdout(raw_output) do
-                # Run with time imports flag
-                Base.eval(Main, :(using InteractiveUtils))
-                Base.eval(Main, :(@time_imports using \$(Symbol("$package_name"))))
+
+            # Redirect stdout to a temporary file to capture the timing output.
+            # `redirect_stdout` accepts a file IOStream (not an IOBuffer), so we
+            # write to a temp file and read it back.
+            timing_capture_file = tempname()
+            open(timing_capture_file, "w") do capture_io
+                redirect_stdout(capture_io) do
+                    # Run with time imports flag
+                    Base.eval(Main, :(using InteractiveUtils))
+                    Base.eval(Main, :(@time_imports using \$(Symbol("$package_name"))))
+                end
             end
-            
+
             # Process the captured output
-            raw_str = String(take!(raw_output))
+            raw_str = read(timing_capture_file, String)
+            rm(timing_capture_file; force = true)
             lines = split(raw_str, '\n')
 
             for line in lines

test/import_timing_analysis_tests.jl

@@ -1,5 +1,6 @@
 using OrgMaintenanceScripts
 using Test
+using Dates
 
 @testset "Import Timing Analysis Tests" begin
     # Create a simple test package structure

test/invalidation_analysis_tests.jl

@@ -1,5 +1,6 @@
 using OrgMaintenanceScripts
 using Test
+using Dates
 
 @testset "Invalidation Analysis Tests" begin
     # Create a simple test package structure