Key improvements:

• MSVC: MSBuild support improvements, forward slash output dir handling, better /Fo argument parsing
• GCC/Clang: Assembly language support, C preprocessor output support, pipe flag ignoring, improved save-temps detection
• Fixed Clang -parallel-jobs hashing and added -fexperimental-assignment-tracking support
• New architecture support: Added RISC-V 64 (riscv64) support
• Distributed compilation: Now prints hostname info for remote jobs that failed; improved compiler
  package handling with /etc/ld.so.conf.d
• Nix support: Added Nix flake with installation documentation
• Added benchmarking infrastructure with CodSpeed

What's Changed

• deps: update blake3 by @ognevny in #2472
• chore: update to env_logger 0.11 by @tottoto in #2471
• Configuration.md - note logging env variables by @Andrej730 in #2480
• Update directories to 6.0 by @musicinmybrain in #2486
• Use generator in CMAKE_MSVC_DEBUG_INFORMATION_FORMAT in README by @Andrej730 in #2479
• chore: update to itertools 0.14 by @tottoto in #2487
• chore: drop tower dependency by @tottoto in #2488
• msvc: handle '/FoRelease' command-line argument by @jimis in #2482
• docs: bump MSRV to 1.85.0 by @deckstose in #2498
• Clippy fixes by @kornelski in #2490
• Fix build on macOS which doesn't have separate 32-bit dirent by @kornelski in #2492
• Avoid unreliable assert_cmd::cargo::cargo_bin by @kornelski in #2489
• chore: switch once_cell crate to standard library by @tottoto in #2499
• no check cfg by @etaloof in #2507
• Fix new warnings in CI by @kornelski in #2513
• fix: make aarch64-pc-windows-msvc also zip not tar.gz by @burhankhanzada in #2514
• feat: Add riscv64 support by @ffgan in #2512
• cuda: try to unbreak the ci by @sylvestre in #2515
• Print hostname info for remote jobs that ran, but failed by @ahartmetz in #2511
• chore: update to fs-err 3 by @tottoto in #2501
• Switch from the unmaintained daemonize crate to a maintained fork by @decathorpe in #2500
• add a nix flake by @TroyKomodo in #2518
• Support clang -fexperimental-assignment-tracking option by @avikivity in #2517
• docs: add installation steps for nix by @TroyKomodo in #2523
• fix: don't hash -parallel-jobs in Clang by @GZGavinZhao in #2529
• Fix failing test_rlib_dep_reader_call for omit CARGO_HOME by @Felixoid in #2527
• Add CanBeConcatenated to ArgInfo::cmp by @2over12 in #2506
• MSVC: support forward slash as an output dir marker by @AJIOB in #2535
• Improve save-temps gcc flags detection by @AJIOB in #2540
• Add GCC pipe flag ignoring support by @AJIOB in #2539
• Add support for C preprocessor output by @AJIOB in #2538
• dedup some code by @sylvestre in #2543
• add benchmarks by @sylvestre in #2530
• Assembly language support by @AJIOB in #2545
• Add /etc/ld.so.conf.d (if present) to compiler package by @ahartmetz in #2546
• add high level benchmarks by @sylvestre in #2547
• codspeed: evaluate the memory benchmarking by @sylvestre in #2548
• build(deps): bump rsa from 0.9.6 to 0.9.10 by @dependabot[bot] in #2542
• chore: update to gzp 2 by @tottoto in #2502
• msvc: fix detect_showincludes_prefix with MSBuild by @AJIOB in #2544
• sccache: prepare a new release by @sylvestre in #2550
• github action: fix the syntax - fails in the ci by @sylvestre in #2553

New Contributors

• @Andrej730 made their first contribution in #2480
• @musicinmybrain made their first contribution in #2486
• @deckstose made their first contribution in #2498
• @etaloof made their first contribution in #2507
• @burhankhanzada made their first contribution in #2514
• @ffgan made their first contribution in #2512
• @decathorpe made their first contribution in #2500
• @TroyKomodo made their first contribution in #2518
• @avikivity made their first contribution in #2517
• @Felixoid made their first contribution in #2527
• @2over12 made their first contribution in #2506

Full Changelog: v0.12.0...v0.13.0