D:\>perl -wE "binmode STDOUT, 'utf8'; use open IO => 'raw'"
D:\>perl -wE "say for PerlIO::get_layers(STDOUT)"
unix
crlf

D:\>perl -wE "use open ':utf8';"       # OK
D:\>perl -wE "use open 'utf8';"        # OK
D:\>perl -wE "use open 'encoding(ASCII)';"     # OK
D:\>perl -wE "use open ':encoding(ASCII)';"    # OK
D:\>perl -wE "use open ':std';"        # OK

D:\>perl -MPerlIO -wE "use open 'std';"
Unknown PerlIO layer class 'std' (need IN, OUT or IO) at -e line 1.
BEGIN failed--compilation aborted at -e line 1.