update stacker to 0.1.9 to unbreak build on OpenBSD

Author: semarie

Cargo.lock

@@ -4778,9 +4778,9 @@ checksum = "ffbc596e092fe5f598b12ef46cc03754085ac2f4d8c739ad61c4ae266cc3b3fa"
 
 [[package]]
 name = "stacker"
-version = "0.1.8"
+version = "0.1.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "32c2467b8abbb417e4e62fd62229719b9c9d77714a7fa989f1afad16ba9c9743"
+checksum = "72dd941b456e1c006d6b9f27c526d5b69281288aeea8cba82c19d3843d8ccdd2"
 dependencies = [
  "cc",
  "cfg-if",

src/librustc_data_structures/Cargo.toml

@@ -28,7 +28,7 @@ rustc_index = { path = "../librustc_index", package = "rustc_index" }
 bitflags = "1.2.1"
 measureme = "0.7.1"
 libc = "0.2"
-stacker = "0.1.6"
+stacker = "0.1.9"
 
 [dependencies.parking_lot]
 version = "0.10"