test: make errorshow test more robust

test/errorshow.jl

@@ -728,7 +728,7 @@ end
 
 # Test that implementation detail of include() is hidden from the user by default
 let bt = try
- include("testhelpers/include_error.jl")
+ @noinline include("testhelpers/include_error.jl")
  catch
  catch_backtrace()
  end
@@ -740,7 +740,7 @@ end
 # Test backtrace printing
 module B
  module C
- f(x; y=2.0) = error()
+ @noinline f(x; y=2.0) = error()
  end
  module D
  import ..C: f
@@ -749,7 +749,8 @@ module B
 end
 
 @testset "backtrace" begin
- bt = try B.D.g()
+ bt = try
+ B.D.g()
  catch
  catch_backtrace()
  end
@@ -777,15 +778,17 @@ if Sys.isapple() || (Sys.islinux() && Sys.ARCH === :x86_64)
  pair_repeater_b() = pair_repeater_a()
 
  @testset "repeated stack frames" begin
- let bt = try single_repeater()
+ let bt = try
+ single_repeater()
  catch
  catch_backtrace()
  end
  bt_str = sprint(Base.show_backtrace, bt)
  @test occursin(r"repeats \d+ times", bt_str)
  end
 
- let bt = try pair_repeater_a()
+ let bt = try
+ pair_repeater_a()
  catch
  catch_backtrace()
  end