single-thread all --sysimage-native-code=no tests

Author: IanButterworth

test/cmdlineargs.jl

@@ -1080,13 +1080,18 @@ run(pipeline(devnull, `$(joinpath(Sys.BINDIR, Base.julia_exename())) --lisp`, de
 let exename = `$(Base.julia_cmd()) --startup-file=no`
     @test readchomp(`$exename --sysimage-native-code=yes -E
         "Bool(Base.JLOptions().use_sysimage_native_code)"`) == "true"
-    @test readchomp(`$exename --sysimage-native-code=no -E
+    # TODO: Make this safe in the presence of two single-thread threadpools
+    # see https://github.com/JuliaLang/julia/issues/57198
+    @test readchomp(`$exename --sysimage-native-code=no -t1,0 -E
         "Bool(Base.JLOptions().use_sysimage_native_code)"`) == "false"
 end
 
 # backtrace contains line number info (esp. on windows #17179)
 for precomp in ("yes", "no")
-    succ, out, bt = readchomperrors(`$(Base.julia_cmd()) --startup-file=no --sysimage-native-code=$precomp -E 'sqrt(-2)'`)
+    # TODO: Make this safe in the presence of two single-thread threadpools
+    # see https://github.com/JuliaLang/julia/issues/57198
+    threads = precomp == "no" ? `-t1,0` : ``
+    succ, out, bt = readchomperrors(`$(Base.julia_cmd()) $threads --startup-file=no --sysimage-native-code=$precomp -E 'sqrt(-2)'`)
     @test !succ
     @test out == ""
     @test occursin(r"\.jl:(\d+)", bt)