Unclear error while using gpu context

I've compiled ffmpeg and decord using steps I provided here - https://github.com/dmlc/decord/issues/89#issuecomment-670334699. It works like it is supposed to with cpu context, but when I'm trying to use gpu context - I see this error message (I'm running it in jupyter inside docker):
```bash
DECORDErrorTraceback (most recent call last)
in
----> 1 vr = VideoReader("F33QOm9Iws0-0.mp4", ctx=gpu(1))

~/.local/lib/python3.6/site-packages/decord-0.4.0-py3.6.egg/decord/video_reader.py in __init__(self, uri, ctx, width, height, num_threads)
43 else:
44 self._handle = _CAPI_VideoReaderGetVideoReader(
---> 45 uri, ctx.device_type, ctx.device_id, width, height, num_threads, 0)
46 if self._handle is None:
47 raise RuntimeError("Error reading " + uri + "...")

~/.local/lib/python3.6/site-packages/decord-0.4.0-py3.6.egg/decord/_ffi/_ctypes/function.py in __call__(self, *args)
173 check_call(_LIB.DECORDFuncCall(
174 self.handle, values, tcodes, ctypes.c_int(num_args),
--> 175 ctypes.byref(ret_val), ctypes.byref(ret_tcode)))
176 _ = temp_args
177 _ = args

~/.local/lib/python3.6/site-packages/decord-0.4.0-py3.6.egg/decord/_ffi/base.py in check_call(ret)
61 """
62 if ret != 0:
---> 63 raise DECORDError(py_str(_LIB.DECORDGetLastError()))
64
65

DECORDError: [22:29:43] /root/decord/src/video/nvcodec/cuda_parser.h:39: CUDAError: cuvidCreateVideoParser(&parser_, &parser_info_) failed with error:
```

And this is what appears in docker logs:
```
[06:52:04] /root/decord/src/video/nvcodec/cuda_threaded_decoder.cc:36: Using device: GeForce GTX 1060 3GB
[06:52:04] /root/decord/src/video/nvcodec/cuda_threaded_decoder.cc:56: Kernel module version 450.51, so using our own stream.
```
The code I'm using is pretty simple:
```python
vr = VideoReader("F33QOm9Iws0-0.mp4", ctx=gpu(1))
```
`ffmpeg -version`:
```bash
ffmpeg version N-98652-g7031a7b Copyright (c) 2000-2020 the FFmpeg developers
built with gcc 7 (Ubuntu 7.5.0-3ubuntu1~18.04)
configuration: --prefix=/root/ffmpeg_build --pkg-config-flags=--static --extra-cflags=-I/root/ffmpeg_build/include --extra-ldflags=-L/root/ffmpeg_build/lib --extra-libs='-lpthread -lm' --bindir=/root/bin --enable-cuda-nvcc --enable-cuvid --enable-nvenc --enable-nonfree --enable-libnpp --extra-cflags=-I/usr/local/cuda/include --extra-ldflags=-L/usr/local/cuda/lib64 --enable-gpl --enable-gnutls --enable-libaom --enable-libass --enable-libfdk-aac --enable-libfreetype --enable-libmp3lame --enable-libopus --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265 --enable-nonfree
libavutil 56. 58.100 / 56. 58.100
libavcodec 58. 99.100 / 58. 99.100
libavformat 58. 49.100 / 58. 49.100
libavdevice 58. 11.101 / 58. 11.101
libavfilter 7. 87.100 / 7. 87.100
libswscale 5. 8.100 / 5. 8.100
libswresample 3. 8.100 / 3. 8.100
libpostproc 55. 8.100 / 55. 8.100
```
`nvidia-smi`:
```bash
+-----------------------------------------------------------------------------+
| NVIDIA-SMI 450.51.05 Driver Version: 450.51.05 CUDA Version: 11.0 |
|-------------------------------+----------------------+----------------------+
| GPU Name Persistence-M| Bus-Id Disp.A | Volatile Uncorr. ECC |
| Fan Temp Perf Pwr:Usage/Cap| Memory-Usage | GPU-Util Compute M. |
| | | MIG M. |
|===============================+======================+======================|
| 0 GeForce GTX 106... On | 00000000:01:00.0 Off | N/A |
| 39% 58C P0 40W / 120W | 1376MiB / 3019MiB | 35% Default |
| | | N/A |
+-------------------------------+----------------------+----------------------+
| 1 GeForce GTX 106... On | 00000000:02:00.0 Off | N/A |
| 0% 48C P8 10W / 120W | 12MiB / 3019MiB | 1% Default |
| | | N/A |
+-------------------------------+----------------------+----------------------+
| 2 GeForce GTX 106... On | 00000000:04:00.0 Off | N/A |
| 0% 36C P8 5W / 120W | 12MiB / 3019MiB | 0% Default |
| | | N/A |
+-------------------------------+----------------------+----------------------+
| 3 GeForce GTX 106... On | 00000000:05:00.0 Off | N/A |
| 0% 40C P8 4W / 120W | 12MiB / 3019MiB | 0% Default |
| | | N/A |
+-------------------------------+----------------------+----------------------+

+-----------------------------------------------------------------------------+
| Processes: |
| GPU GI CI PID Type Process name GPU Memory |
| ID ID Usage |
|=============================================================================|
+-----------------------------------------------------------------------------+
```
decord version (built ftom the latest master with `cmake .. -DUSE_CUDA=ON`) - `0.4.0`