Update dependency sccache to v0.17.0 - #108

v0.17.0

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sccache 0.17.0

Summary

sccache 0.17.0 is a significant release: it introduces a new client-side architecture.

Until now, every compilation was handed off to the long-lived sccache server, which did the cache
lookup and ran the compiler. In client-side mode, the client process does that work itself - the
server is only consulted for the shared state it owns (compiler info, dist client, stats). This
removes a round-trip and the server-side bottleneck, and gives noticeably better results on
developer workstations.

Client-side mode is opt-in for now: enable it with the SCCACHE_CLIENT_SIDE environment variable
(or the client_side_mode config key). See docs/Architecture.md
for the details.

Other highlights:

• Response files: gcc/clang builds using quoted @response files are now cached and
  distributed correctly (#​2755, #​2772), and Rust @argfile arguments are supported (#​2782).
• Distributed compilation: compile tasks and their subprocesses are now aborted when a client
  disconnects, instead of running to completion on the build server (#​2761, #​2774). The
  ToolchainPackager cfg gate was fixed so the dist code builds on ppc64le and s390x (#​2749).
• S3 SSE-KMS: server-side encryption with KMS keys is now supported (#​2770).
• Diagnostics: gcc color diagnostics now behave the same way as rustc's (#​2758).
• Preprocessor correctness: -ivfsoverlay is treated as a preprocessor-only argument (#​2767).

Welcome to 4 new contributors!

Client-side mode

• Initial client-side implementation by @​glandium in #​2735
• doc: document client-side and direct modes in Architecture.md by @​sylvestre in #​2752

Features

• gcc/clang: cache and distribute builds using quoted @​response files by @​avikivity in #​2755
• Add support for arg files in Rust by @​ranger-ross in #​2782
• feat: support S3 SSE-KMS by @​jpadilla in #​2770
• Make gcc diagnostics color output work the same as for rustc by @​jwidauer in #​2758
• Abort compile tasks and associated subprocesses when a client disconnects by @​trxcllnt in #​2761

Fixes

• Fix ToolchainPackager cfg gate to build on ppc64le/s390x by @​cryptomilk in #​2749
• treat -ivfsoverlay as a preprocessor-only argument by @​glandium in #​2767
• gcc: refine response-file tokenizer visibility and whitespace handling by @​sylvestre in #​2772
• Fix description of Unix socket-based Redis connection by @​Toorero in #​2769

Cleanup

• Simplify the code from pr #​2761 by @​sylvestre in #​2774
• tests: pin libc in the dist test crate by @​sylvestre in #​2784
• Release 0.17.0 by @​sylvestre in #​2783

New Contributors

• @​jwidauer made their first contribution in #​2758
• @​jpadilla made their first contribution in #​2770
• @​ranger-ross made their first contribution in #​2782
• @​Toorero made their first contribution in #​2769

Full Changelog: mozilla/sccache@v0.16.0...v0.17.0

v0.16.0

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sccache 0.16.0

Summary

sccache 0.16.0 is a smaller, stabilizing release on top of 0.15.0's multi-tier caching work, with a few new capabilities:

• Read-only backends: Any storage backend can now be marked read-only, not just a select few (#​2705).
• Remote execution on aarch64: Distributed/remote execution now works on Linux aarch64, including fixes for ldd output parsing and toolchain packaging on non-x86_64 Linux (#​2668).
• CUDA: nvcc's --dependency-output argument is now handled (#​2708).
• Resilience: Fall back to a direct cache write when tempfile creation on the same filesystem fails (#​2369), and give a meaningful error when a multi-level chain references a backend that wasn't compiled in (#​2695).
• Client efficiency: The client and dist-client now use a single-threaded tokio runtime, avoiding a thread explosion when many short-lived clients run on many-core hosts (#​2704).
• Correctness: Strip SCCACHE_BASEDIRS from escaped-backslash paths on Windows (#​2736), ignore empty-set environment values in config (#​2639), and avoid the sccache wrapper when resolving the real compiler (#​2720).
• Security/logging: JWT keys and cert digests are now base64-encoded in logs (#​2712), plus general logging improvements (#​2734).

Welcome to 4 new contributors!

Features

• feat: all backends support making them as read-only by @​AJIOB in #​2705
• Enable RE on Linux-aarch64 by @​malfet in #​2668
• feat(nvcc): support argument: --dependency-output by @​ZRHann in #​2708
• feat: avoid sccache wrapper when resolving compiler by @​iTrooz in #​2720
• Fall back to direct cache write if tempfile creation on the same fs fails by @​myzhang1029 in #​2369
• Don't wait depfiles for gcc/clang preprocessed inputs by @​AJIOB in #​2665

Fixes

• fix: strip SCCACHE_BASEDIRS from escaped-backslash paths on Windows by @​rconde01 in #​2736
• fix: ignore empty-set environment values for config by @​AJIOB in #​2639
• fix: handle disabled cache backend features in multilevel chain by @​cryptomilk in #​2695
• fix: use single-threaded tokio runtime in sccache (dist-)client by @​AJIOB in #​2704
• fix: add newline when printing dist-status to stdout by @​iTrooz in #​2710

Logging

• chore: encode jwt key and cert digest with base64 in logs by @​iTrooz in #​2712
• Slightly improve logging by @​glandium in #​2734

Cleanup

• chore: make clippy happy by @​AJIOB in #​2727
• Extract new_client_runtime() helper to DRY up client runtime creation by @​sylvestre in #​2744

New Contributors

• @​ZRHann made their first contribution in #​2708
• @​myzhang1029 made their first contribution in #​2369
• @​malfet made their first contribution in #​2668
• @​rconde01 made their first contribution in #​2736

Full Changelog: mozilla/sccache@v0.15.0...v0.16.0