Initialize env_logger for our *.wast tests

Cargo.lock

@@ -2211,6 +2211,7 @@ name = "wasmtime-cli"
 version = "0.16.0"
 dependencies = [
  "anyhow",
+ "env_logger 0.7.1",
  "faerie",
  "file-per-thread-logger",
  "filecheck",

Cargo.toml

@@ -42,6 +42,7 @@ rayon = "1.2.1"
 humantime = "1.3.0"
 
 [dev-dependencies]
+env_logger = "0.7.1"
 filecheck = "0.5.0"
 more-asserts = "0.2.1"
 tempfile = "3.1.0"

build.rs

@@ -155,6 +155,7 @@ fn write_testsuite_tests(
         writeln!(out, "#[ignore]")?;
     }
     writeln!(out, "fn r#{}() {{", &testname)?;
+    writeln!(out, "    let _ = env_logger::try_init();")?;
     writeln!(
         out,
         "    crate::wast::run_wast(r#\"{}\"#, crate::wast::Strategy::{}).unwrap();",