Auto merge of #25739 - servo:rustup, r=paulrouget

Upgrade to rustc 1.43.0-nightly (5d04ce67f 2020-02-13)

~This Nightly doesn’t have rustfmt, so merging this PR is blocked on https://github.com/rust-lang/rust/issues/68917 and upgrading to a Nightly with the fix.~

Fixes #25550

Cargo.lock

@@ -3658,7 +3658,6 @@ dependencies = [
  "log",
  "malloc_size_of",
  "malloc_size_of_derive",
- "matches",
  "mime",
  "mime_guess",
  "msg",
@@ -4836,9 +4835,6 @@ dependencies = [
 [[package]]
 name = "script_plugins"
 version = "0.0.1"
-dependencies = [
- "matches",
-]
 
 [[package]]
 name = "script_plugins_tests"
@@ -4907,7 +4903,6 @@ dependencies = [
  "derive_more 0.99.2",
  "fxhash",
  "log",
- "matches",
  "phf",
  "phf_codegen",
  "precomputed-hash",
@@ -5653,7 +5648,6 @@ dependencies = [
  "log",
  "malloc_size_of",
  "malloc_size_of_derive",
- "matches",
  "new_debug_unreachable",
  "num-derive",
  "num-integer",