Use i686-unknown-linux-gnu target

Author: 0xPoe

tests/testsuite/doc.rs

@@ -779,7 +779,7 @@ fn doc_target() {
 
 #[cargo_test]
 fn doc_target_and_open() {
-    const TARGET: &str = "arm-unknown-linux-gnueabihf";
+    const TARGET: &str = "i686-unknown-linux-gnu";
 
     let p = project()
         .file(
@@ -1355,7 +1355,7 @@ fn doc_workspace_open_first_one_built_for_host() {
                 [package]
                 name = "bar"
                 version = "0.1.0"
-                forced-target = "arm-unknown-linux-gnueabihf"
+                forced-target = "i686-unknown-linux-gnu"
             "#,
         )
         .file("bar/src/lib.rs", "")
@@ -1373,7 +1373,7 @@ fn doc_workspace_open_first_one_built_for_host() {
 
 #[cargo_test(nightly, reason = "-Zper-package-target is unstable")]
 fn doc_workspace_open_first_one_when_no_one_built_for_host() {
-    const TARGET: &str = "arm-unknown-linux-gnueabihf";
+    const TARGET: &str = "i686-unknown-linux-gnu";
 
     let p = project()
         .file(