Reduce dependencies.

Author: cjgillot

Cargo.lock

@@ -3581,27 +3581,18 @@ name = "rustc_crate"
 version = "0.0.0"
 dependencies = [
  "bitflags",
- "chalk-ir",
- "measureme",
- "polonius-engine",
- "rustc-rayon-core",
- "rustc_apfloat",
- "rustc_arena",
  "rustc_ast",
  "rustc_attr",
  "rustc_data_structures",
  "rustc_errors",
  "rustc_feature",
  "rustc_hir",
- "rustc_index",
  "rustc_macros",
- "rustc_query_system",
  "rustc_serialize",
  "rustc_session",
  "rustc_span",
  "rustc_target",
  "smallvec 1.4.2",
- "tracing",
 ]
 
 [[package]]

compiler/rustc_crate/Cargo.toml

@@ -8,25 +8,16 @@ edition = "2018"
 doctest = false
 
 [dependencies]
-rustc_arena = { path = "../rustc_arena" }
 bitflags = "1.2.1"
-tracing = "0.1"
-rustc-rayon-core = "0.3.0"
-polonius-engine = "0.12.0"
-rustc_apfloat = { path = "../rustc_apfloat" }
+smallvec = { version = "1.0", features = ["union", "may_dangle"] }
+rustc_ast = { path = "../rustc_ast" }
 rustc_attr = { path = "../rustc_attr" }
+rustc_data_structures = { path = "../rustc_data_structures" }
+rustc_errors = { path = "../rustc_errors" }
 rustc_feature = { path = "../rustc_feature" }
 rustc_hir = { path = "../rustc_hir" }
-rustc_target = { path = "../rustc_target" }
 rustc_macros = { path = "../rustc_macros" }
-rustc_data_structures = { path = "../rustc_data_structures" }
-rustc_query_system = { path = "../rustc_query_system" }
-rustc_errors = { path = "../rustc_errors" }
-rustc_index = { path = "../rustc_index" }
 rustc_serialize = { path = "../rustc_serialize" }
-rustc_ast = { path = "../rustc_ast" }
-rustc_span = { path = "../rustc_span" }
-chalk-ir = "0.36.0"
-smallvec = { version = "1.0", features = ["union", "may_dangle"] }
-measureme = "9.0.0"
 rustc_session = { path = "../rustc_session" }
+rustc_span = { path = "../rustc_span" }
+rustc_target = { path = "../rustc_target" }