feat: Implement cache storage check

[Xuanwo]

Signed-off-by: Xuanwo github@xuanwo.io

This PR will add storage check during start.

Demo Show

Start server without s3 ak/sk

:( SCCACHE_START_SERVER=1 SCCACHE_NO_DAEMON=1 SCCACHE_BUCKET=test ./target/debug/sccache                  
sccache: error: cache storage failed to read: ObjectPermissionDenied (permanent) at read => S3Error { code: "AccessDenied", message: "Access Denied", resource: "", request_id: "46RYHDRAN8WD64XW" }

Context:
    response: Parts { status: 403, version: HTTP/1.1, headers: {"x-amz-request-id": "46RYHDRAN8WD64XW", "x-amz-id-2": "R9ldSWAQSbbTSYOowzLoJD0dRgRWbcS0wYV0ibbb+4yVok+oYEmvB+F8+2g05KWvXnGYK8poafw=", "content-type": "application/xml", "transfer-encoding": "chunked", "date": "Mon, 02 Jan 2023 04:48:47 GMT", "server": "AmazonS3"} }
    service: s3
    path: .sccache_check
    range: 0-

Start with rustc wrapper also works:

:( RUSTC_WRAPPER=/home/xuanwo/Code/mozilla/sccache/target/debug/sccache SCCACHE_BUCKET=test CARGO_INCREMENTAL=false SCCACHE_LOG=debug SCCACHE_ERROR_LOG=/tmp/sccache_log.txt cargo build                 
error: failed to run `rustc` to learn about target-specific information

Caused by:
  process didn't exit successfully: `/home/xuanwo/Code/mozilla/sccache/target/debug/sccache rustc - --crate-name ___ --print=file-names -C link-arg=-fuse-ld=/usr/bin/mold --crate-type bin --crate-type rlib --crate-type dylib --crate-type cdylib --crate-type staticlib --crate-type proc-macro --print=sysroot --print=cfg` (exit status: 2)
  --- stderr
  [2023-01-02T12:05:01Z DEBUG sccache::config] Attempting to read config file at "/home/xuanwo/.config/sccache/config"
  [2023-01-02T12:05:01Z DEBUG sccache::config] Couldn't open config file: No such file or directory (os error 2)
  [2023-01-02T12:05:01Z DEBUG sccache::config] Attempting to read config file at "/home/xuanwo/.config/sccache/config"
  [2023-01-02T12:05:01Z DEBUG sccache::config] Couldn't open config file: No such file or directory (os error 2)
  sccache: error: Server startup failed: cache storage failed to read: ObjectPermissionDenied (permanent) at read => S3Error { code: "AccessDenied", message: "Access Denied", resource: "", request_id: "1V54QP0EPZQ5J3A7" }

  Context:
      response: Parts { status: 403, version: HTTP/1.1, headers: {"x-amz-request-id": "1V54QP0EPZQ5J3A7", "x-amz-id-2": "YRQ+E3KrYscCNKSrajVyQU0JT8hxEvdgzBhbHB4OK4Y+m15W6HVFko3NDBaMxIFQRFm/QVl/C+I=", "content-type": "application/xml", "transfer-encoding": "chunked", "date": "Mon, 02 Jan 2023 12:05:03 GMT", "server": "AmazonS3"} }
      service: s3
      path: .sccache_check
      range: 0-

Affected Issues

• Close proposal: Exit with error message if storage is misconfigured #1512
• Fix Fail compiles on misconfigured S3 bucket #45
• Fix s3 backend silently stopped working after 0.3.1 when AWS region isn't defined #1508
• Fix Silently fails to write GCS cache #1384
• Fix With S3 storage backend, it would be very helpful to print a descriptive error instead of silently timing out when AWS_ACCESS_KEY_ID/AWS_SECRET_ACCESS_KEY are missing/incorrect #1173
• Fix Don't silently swallow forbidden AWS GET requests (sscache S3 always cache miss) #225

[codecov-commenter]

Codecov Report

Base: 30.09% // Head: 30.46% // Increases project coverage by +0.37% 🎉

Coverage data is based on head (60d2a91) compared to base (dd418ab).
Patch coverage: 29.33% of modified lines in pull request are covered.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1519      +/-   ##
==========================================
+ Coverage   30.09%   30.46%   +0.37%     
==========================================
  Files          47       48       +1     
  Lines       16643    16703      +60     
  Branches     7907     7931      +24     
==========================================
+ Hits         5008     5089      +81     
+ Misses       6315     6206     -109     
- Partials     5320     5408      +88     

Impacted Files	Coverage Δ
tests/sccache_cargo.rs	34.21% <ø> (+1.26%)	⬆️
src/cache/cache.rs	39.53% <15.00%> (+0.87%)	⬆️
src/server.rs	31.68% <28.57%> (-0.04%)	⬇️
tests/sccache_args.rs	36.58% <36.58%> (ø)
src/mock_command.rs	52.05% <0.00%> (-0.38%)	⬇️
src/compiler/args.rs	61.19% <0.00%> (-0.36%)	⬇️
src/compiler/gcc.rs	55.37% <0.00%> (-0.21%)	⬇️
src/compiler/msvc.rs	43.29% <0.00%> (-0.14%)	⬇️
src/compiler/rust.rs	33.46% <0.00%> (ø)
src/compiler/compiler.rs	35.66% <0.00%> (ø)
... and 10 more

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