Upgrade env_logger to 0.7

Author: mati865

Cargo.lock

@@ -534,7 +534,7 @@ name = "compiletest"
 version = "0.0.0"
 dependencies = [
  "diff",
- "env_logger 0.6.2",
+ "env_logger 0.7.0",
  "getopts",
  "lazy_static 1.3.0",
  "libc",
@@ -3420,7 +3420,7 @@ dependencies = [
 name = "rustc_driver"
 version = "0.0.0"
 dependencies = [
- "env_logger 0.6.2",
+ "env_logger 0.7.0",
  "graphviz",
  "lazy_static 1.3.0",
  "log",

src/librustc_driver/Cargo.toml

@@ -13,7 +13,7 @@ crate-type = ["dylib"]
 graphviz = { path = "../libgraphviz" }
 lazy_static = "1.0"
 log = "0.4"
-env_logger = { version = "0.6", default-features = false }
+env_logger = { version = "0.7", default-features = false }
 rustc = { path = "../librustc" }
 rustc_target = { path = "../librustc_target" }
 rustc_ast_borrowck = { path = "../librustc_ast_borrowck" }

src/tools/compiletest/Cargo.toml

@@ -6,7 +6,7 @@ edition = "2018"
 
 [dependencies]
 diff = "0.1.10"
-env_logger = { version = "0.6", default-features = false }
+env_logger = { version = "0.7", default-features = false }
 getopts = "0.2"
 log = "0.4"
 regex = "1.0"