message: Align x86_64 target to x86_64-unknown-none
  The only remaining difference is the llvm-target.
diff: {
  "arch": "x86_64",
  + "code-model": "kernel",
  "cpu": "x86-64",
  "data-layout": "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128",
  "disable-redzone": true,
  "max-atomic-width": 64,
  "panic-strategy": "abort",
  "position-independent-executables": true,
  - "pre-link-args": {
  - "ld.lld": [
  - "--build-id",
  - "--hash-style=gnu",
  - "--Bstatic"
  - ]
  - },
  + "relro-level": "full",
  "stack-probes": {
  "kind": "call"
  },
  