Debugging Rust in 2026
Blog post from JetBrains
Rust debugging remains less widely adopted than print-based troubleshooting, with a 2026 survey finding that 53.2% of users do not use debuggers and 81.3% consider prints easier or faster, although debugger use has risen from 36% in 2021 to 46.8%. Using a faulty Graham scan convex-hull implementation as an example, the discussion compares print statements such as `println!` and `dbg!`, command-line tools including rust-gdb and rust-lldb, and RustRover’s graphical debugging interface to locate an incorrect distance comparison that sorted same-angle points in the wrong order. Print debugging is presented as accessible but repetitive because it requires source edits and recompilation, while debuggers allow direct inspection of program state but require familiarity with breakpoints and commands. RustRover combines Cargo, tests, analysis, and GDB/LLDB debugging, with Rust-specific support for evaluating expressions through MIR, and its 2026.3 MCP server can also let AI agents run tests, set breakpoints, inspect values, and suggest fixes.
| Trend | Post Mentions | Total Month Mentions | Posts | Companies | MoM |
|---|---|---|---|---|---|
| MCP | 5 | 4,439 | 399 | 125 | -63% |
| Observability | 1 | 936 | 190 | 77 | -70% |
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