$ set PERL_ENCODE_DEBUG=999

$ perl -e " use Devel::Modlist; use open qw/ :std :encoding(utf8) /; use Test::Exception;  "
Encode::utf8 XS on at C:/perl/5.14.1/lib/MSWin32-x86-multi-thread/Encode.pm line 298.
Bareword "xception" not allowed while "strict subs" in use at C:/perl/site/5.14.1/lib/Test/Exception.pm line 4.
Compilation failed in require at -e line 1.
BEGIN failed--compilation aborted at -e line 1.

$ perl -e " use Devel::Modlist; use open qw/ :std :encoding(UTF-8) /; use Test::Exception;  "
Encode::utf8 XS on at C:/perl/5.14.1/lib/MSWin32-x86-multi-thread/Encode.pm line 298.
eval "utf-8-strict" at C:/perl/5.14.1/lib/MSWin32-x86-multi-thread/Encode/Alias.pm line 32.
(?^i:\bUTF-8$), utf-8-strict at C:/perl/5.14.1/lib/MSWin32-x86-multi-thread/Encode/Alias.pm line 45.
find_alias(Encode, UTF-8)->name = utf-8-strict at C:/perl/5.14.1/lib/MSWin32-x86-multi-thread/Encode/Alias.pm line 75.
find_alias(Encode, UTF-8)->name = utf-8-strict at C:/perl/5.14.1/lib/MSWin32-x86-multi-thread/Encode/Alias.pm line 75.

$ perl -e " use Devel::Modlist; use Test::Exception;  use open qw/ :std :encoding(UTF-8) /; "
Encode::utf8 XS on at C:/perl/5.14.1/lib/MSWin32-x86-multi-thread/Encode.pm line 298.
eval "utf-8-strict" at C:/perl/5.14.1/lib/MSWin32-x86-multi-thread/Encode/Alias.pm line 32.
(?^i:\bUTF-8$), utf-8-strict at C:/perl/5.14.1/lib/MSWin32-x86-multi-thread/Encode/Alias.pm line 45.
find_alias(Encode, UTF-8)->name = utf-8-strict at C:/perl/5.14.1/lib/MSWin32-x86-multi-thread/Encode/Alias.pm line 75.
find_alias(Encode, UTF-8)->name = utf-8-strict at C:/perl/5.14.1/lib/MSWin32-x86-multi-thread/Encode/Alias.pm line 75.

$ perl -e " use Devel::Modlist; use Test::Exception;  use open qw/ :std :encoding(utf8) /; "
Encode::utf8 XS on at C:/perl/5.14.1/lib/MSWin32-x86-multi-thread/Encode.pm line 298.
Config
Encode                 2.47
Encode::Alias          2.16
Encode::Config         2.05
Encode::Encoding       2.05
Exporter               5.66
Exporter::Heavy        5.66
PerlIO                 1.07
PerlIO::encoding       0.14
Sub::Uplevel           0.24
Test::Builder          0.98
Test::Exception        0.31
XSLoader               0.15
base                   2.18
bytes                  1.04
constant               1.21
open                   1.08
vars                   1.02
warnings               1.12
warnings::register     1.02