Improved truncation diagnostics

[pacman82]

No description provided.

[coveralls]

Pull Request Test Coverage Report for Build e16ee971bf92dc72d9263b848715287d962785fd

• 43 of 70 (61.43%) changed or added relevant lines in 7 files are covered.
• 6 unchanged lines in 3 files lost coverage.
• Overall coverage decreased (-0.3%) to 84.016%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
odbc-api/src/buffers/any_buffer.rs	1	2	50.0%
odbc-api/src/buffers/text_column.rs	10	11	90.91%
odbc-api/src/buffers/columnar.rs	2	5	40.0%
odbc-api/src/cursor.rs	21	25	84.0%
odbc-api/src/buffers/bin_column.rs	0	6	0.0%
odbc-api/src/buffers/indicator.rs	0	6	0.0%
odbcsv/src/main.rs	9	15	60.0%

Files with Coverage Reduction	New Missed Lines	%
odbc-api/src/buffers/bin_column.rs	1	70.76%
odbc-api/src/buffers/columnar.rs	1	85.26%
odbcsv/src/main.rs	4	86.29%

Totals
Change from base Build b904ff01f8101d885b60552a8e14d312993fc705:	-0.3%
Covered Lines:	4431
Relevant Lines:	5274

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💛 - Coveralls