This test has never passed. For reference, ETC1 support was added to the Intel drivers on commit 8dc074cd92dfc2.

The test fails with the following output:

Mesa: User error: GL_INVALID_OPERATION in glTexImage2D(format = GL_RGB, internalFormat = GL_ETC1_RGB8_OES)
Mesa: User error: GL_INVALID_VALUE in glCopyTexImage2D(internalFormat)
Mesa: User error: GL_INVALID_OPERATION in glTexSubImage2D
Mesa: User error: GL_INVALID_OPERATION in glCopyTexSubImage2D(undefined texture level: 0)
Mesa: User error: GL_INVALID_VALUE in glCompressedTexSubImage2D
Unexpected GL error: GL_INVALID_OPERATION 0x502
(Error at /home/chad/proj/linux/graphics/v/master/src/piglit/tests/spec/oes_compressed_etc1_rgb8_texture/oes_compressed_etc1_rgb8_texture-basic.c:54)
Expected GL error: GL_INVALID_VALUE 0x501
Unexpected GL error: GL_INVALID_VALUE 0x501
(Error at /home/chad/proj/linux/graphics/v/master/src/piglit/tests/spec/oes_compressed_etc1_rgb8_texture/oes_compressed_etc1_rgb8_texture-basic.c:69)
Expected GL error: GL_INVALID_OPERATION 0x502
PIGLIT: {'result': 'fail' }