revertme: dummy test failure and error

(cherry picked from commit 90dd34f)

Author: IanButterworth

stdlib/Dates/test/accessors.jl

@@ -5,6 +5,7 @@ module AccessorsTest
 using Dates
 using Test
 
+@test false
 @testset "yearmonthday/yearmonth/monthday" begin
     # yearmonthday is the opposite of totaldays
     # taking Rata Die Day # and returning proleptic Gregorian date

stdlib/Markdown/test/runtests.jl

@@ -4,6 +4,8 @@ using Test, Markdown, StyledStrings
 import Markdown: MD, Paragraph, Header, Italic, Bold, LineBreak, insert_hlines, plain, term, html, rst, Table, Code, LaTeX, Footnote
 import Base: show
 
+@test error("dummy error")
+
 # Basics
 # Equality is checked by making sure the HTML output is
 # the same – the structure itself may be different.

test/runtests.jl

@@ -78,7 +78,7 @@ limited_worker_rss && move_to_node1("Distributed")
 
 # Move LinearAlgebra and Pkg tests to the front, because they take a while, so we might
 # as well get them all started early.
-for prependme in ["LinearAlgebra", "Pkg"]
+for prependme in ["LinearAlgebra", "Pkg", "Dates", "Markdown"]
     prependme_test_ids = findall(x->occursin(prependme, x), tests)
     prependme_tests = tests[prependme_test_ids]
     deleteat!(tests, prependme_test_ids)