unexpected smask type <</Type /Mask/S /Luminosity/G 13 0 R>>

[victorinno]

Hi there, I'm trying to use this library to read a pdf, but for some reason it just doesn't work because of this mask.

Here ir the following error:

thread 'main' panicked at 'unexpected smask type <</Type /Mask/S /Luminosity/G 13 0 R>>', .cargo\registry\src\github.com-1ecc6299db9ec823\pdf-extract-0.6.2\src\lib.rs:1190:24 stack backtrace: 0: backtrace::backtrace::trace_unsynchronized at .cargo\registry\src\github.com-1ecc6299db9ec823\backtrace-0.3.46\src\backtrace\mod.rs:66 1: std::sys_common::backtrace::_print_fmt at /rustc/5c1f21c3b82297671ad3ae1e8c942d2ca92e84f2\/src\libstd\sys_common\backtrace.rs:78 2: std::sys_common::backtrace::_print::{{impl}}::fmt at /rustc/5c1f21c3b82297671ad3ae1e8c942d2ca92e84f2\/src\libstd\sys_common\backtrace.rs:59 3: core::fmt::write at /rustc/5c1f21c3b82297671ad3ae1e8c942d2ca92e84f2\/src\libcore\fmt\mod.rs:1076 4: std::io::Write::write_fmt at /rustc/5c1f21c3b82297671ad3ae1e8c942d2ca92e84f2\/src\libstd\io\mod.rs:1537 5: std::sys_common::backtrace::_print at /rustc/5c1f21c3b82297671ad3ae1e8c942d2ca92e84f2\/src\libstd\sys_common\backtrace.rs:62 6: std::sys_common::backtrace::print at /rustc/5c1f21c3b82297671ad3ae1e8c942d2ca92e84f2\/src\libstd\sys_common\backtrace.rs:49 7: std::panicking::default_hook::{{closure}} at /rustc/5c1f21c3b82297671ad3ae1e8c942d2ca92e84f2\/src\libstd\panicking.rs:198 8: std::panicking::default_hook at /rustc/5c1f21c3b82297671ad3ae1e8c942d2ca92e84f2\/src\libstd\panicking.rs:218 9: std::panicking::rust_panic_with_hook at /rustc/5c1f21c3b82297671ad3ae1e8c942d2ca92e84f2\/src\libstd\panicking.rs:486 10: std::panicking::begin_panic_handler at /rustc/5c1f21c3b82297671ad3ae1e8c942d2ca92e84f2\/src\libstd\panicking.rs:388 11: std::panicking::begin_panic_fmt at /rustc/5c1f21c3b82297671ad3ae1e8c942d2ca92e84f2\/src\libstd\panicking.rs:342 12: pdf_extract::applystate at C:\Users\rotc.cargo\registry\src\github.com-1ecc6299db9ec823\pdf-extract-0.6.2\src\lib.rs:1190 13: pdf_extract::Processor::processstream at C:\Users\rotc.cargo\registry\src\github.com-1ecc6299db9ec823\pdf-extract-0.6.2\src\lib.rs:1561 14: pdf_extract::outputdoc at C:\Users\rotc.cargo\registry\src\github.com-1ecc6299db9ec823\pdf-extract-0.6.2\src\lib.rs:2028 15: pdf_extract::extracttext<std::path::PathBuf*> at C:\Users\rotc.cargo\registry\src\github.com-1ecc6299db9ec823\pdf-extract-0.6.2\src\lib.rs:1989 16: contador_palavras::read_pdf at .\src\main.rs:32 17: contador_palavras::main at .\src\main.rs:53 18: std::rt::langstart::{{closure}}<core::result::Result<(), exitfailure::ExitFailure>> at C:\Users\rotc.rustup\toolchains\stable-x86_64-pc-windows-msvc\lib\rustlib\src\rust\src\libstd\rt.rs:67 19: std::rt::lang_start_internal::{{closure}} at /rustc/5c1f21c3b82297671ad3ae1e8c942d2ca92e84f2\/src\libstd\rt.rs:52 20: std::panicking::try::do_call at /rustc/5c1f21c3b82297671ad3ae1e8c942d2ca92e84f2\/src\libstd\panicking.rs:297 21: std::panicking::try at /rustc/5c1f21c3b82297671ad3ae1e8c942d2ca92e84f2\/src\libstd\panicking.rs:274 22: std::panic::catch_unwind at /rustc/5c1f21c3b82297671ad3ae1e8c942d2ca92e84f2\/src\libstd\panic.rs:394 23: std::rt::lang_start_internal at /rustc/5c1f21c3b82297671ad3ae1e8c942d2ca92e84f2\/src\libstd\rt.rs:51 24: std::rt::lang_start<core::result::Result<(), exitfailure::ExitFailure>> at .rustup\toolchains\stable-x86_64-pc-windows-msvc\lib\rustlib\src\rust\src\libstd\rt.rs:67 25: main 26: invoke_main at d:\A01_work\6\s\src\vctools\crt\vcstartup\src\startup\exe_common.inl:78 27: __scrt_common_main_seh at d:\A01_work\6\s\src\vctools\crt\vcstartup\src\startup\exe_common.inl:288 28: BaseThreadInitThunk 29: RtlUserThreadStart