Update dependency sccache to v0.16.0

[github-actions]

This PR contains the following updates:

Package	Update	Change
sccache	minor	0.15.0 → 0.16.0

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Release Notes

mozilla/sccache (sccache)

v0.16.0

Compare Source

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

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Updates the Rust toolchain tools list by bumping the sccache tool version.

Changes:

• Bumped sccache from 0.15.0 to 0.16.0 in tools-cargo.json

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