diff --git a/tests/testsuite/doc.rs b/tests/testsuite/doc.rs
index 1cfa9684879..5912c1f7270 100644
--- a/tests/testsuite/doc.rs
+++ b/tests/testsuite/doc.rs
@@ -1141,7 +1141,6 @@ fn doc_edition() {
         .file(
             "Cargo.toml",
             r#"
-            cargo-features = ["edition"]
             [package]
             name = "foo"
             version = "0.0.1"
@@ -1153,12 +1152,10 @@ fn doc_edition() {
         .build();
 
     p.cargo("doc -v")
-        .masquerade_as_nightly_cargo()
         .with_stderr_contains("[RUNNING] `rustdoc [..]--edition=2018[..]")
         .run();
 
     p.cargo("test -v")
-        .masquerade_as_nightly_cargo()
         .with_stderr_contains("[RUNNING] `rustdoc [..]--edition=2018[..]")
         .run();
 }
@@ -1169,7 +1166,6 @@ fn doc_target_edition() {
         .file(
             "Cargo.toml",
             r#"
-            cargo-features = ["edition"]
             [package]
             name = "foo"
             version = "0.0.1"
@@ -1183,12 +1179,10 @@ fn doc_target_edition() {
         .build();
 
     p.cargo("doc -v")
-        .masquerade_as_nightly_cargo()
         .with_stderr_contains("[RUNNING] `rustdoc [..]--edition=2018[..]")
         .run();
 
     p.cargo("test -v")
-        .masquerade_as_nightly_cargo()
         .with_stderr_contains("[RUNNING] `rustdoc [..]--edition=2018[..]")
         .run();
 }
diff --git a/tests/testsuite/edition.rs b/tests/testsuite/edition.rs
index 69f45c421f0..65bd628c2d2 100644
--- a/tests/testsuite/edition.rs
+++ b/tests/testsuite/edition.rs
@@ -28,5 +28,5 @@ fn edition_works_for_build_script() {
         .file("a/src/lib.rs", "pub fn foo() {}")
         .build();
 
-    p.cargo("build -v").masquerade_as_nightly_cargo().run();
+    p.cargo("build -v").run();
 }
diff --git a/tests/testsuite/fix.rs b/tests/testsuite/fix.rs
index ff38c21cdd7..ace4a70bbc8 100644
--- a/tests/testsuite/fix.rs
+++ b/tests/testsuite/fix.rs
@@ -930,9 +930,7 @@ fn fix_idioms() {
 fn idioms_2015_ok() {
     let p = project().file("src/lib.rs", "").build();
 
-    p.cargo("fix --edition-idioms --allow-no-vcs")
-        .masquerade_as_nightly_cargo()
-        .run();
+    p.cargo("fix --edition-idioms --allow-no-vcs").run();
 }
 
 #[test]
diff --git a/tests/testsuite/install.rs b/tests/testsuite/install.rs
index e3fb49d1224..70217fc15e2 100644
--- a/tests/testsuite/install.rs
+++ b/tests/testsuite/install.rs
@@ -780,8 +780,6 @@ fn installs_from_cwd_with_2018_warnings() {
         .file(
             "Cargo.toml",
             r#"
-            cargo-features = ["edition"]
-
             [package]
             name = "foo"
             version = "0.1.0"
@@ -793,7 +791,6 @@ fn installs_from_cwd_with_2018_warnings() {
         .build();
 
     p.cargo("install")
-        .masquerade_as_nightly_cargo()
         .with_status(101)
         .with_stderr_contains(
             "error: Using `cargo install` to install the binaries for the \
diff --git a/tests/testsuite/metadata.rs b/tests/testsuite/metadata.rs
index 33b3022200d..1ab66704b55 100644
--- a/tests/testsuite/metadata.rs
+++ b/tests/testsuite/metadata.rs
@@ -1208,8 +1208,6 @@ fn package_edition_2018() {
         .file(
             "Cargo.toml",
             r#"
-            cargo-features = ["edition"]
-
             [package]
             name = "foo"
             version = "0.1.0"
@@ -1219,7 +1217,6 @@ fn package_edition_2018() {
         )
         .build();
     p.cargo("metadata")
-        .masquerade_as_nightly_cargo()
         .with_json(
             r#"
         {
@@ -1291,8 +1288,6 @@ fn target_edition_2018() {
         .file(
             "Cargo.toml",
             r#"
-            cargo-features = ["edition"]
-
             [package]
             name = "foo"
             version = "0.1.0"
@@ -1305,7 +1300,6 @@ fn target_edition_2018() {
         )
         .build();
     p.cargo("metadata")
-        .masquerade_as_nightly_cargo()
         .with_json(
             r#"
         {
@@ -1389,8 +1383,6 @@ fn rename_dependency() {
         .file(
             "Cargo.toml",
             r#"
-            cargo-features = ["rename-dependency"]
-
             [project]
             name = "foo"
             version = "0.0.1"
@@ -1405,7 +1397,6 @@ fn rename_dependency() {
         .build();
 
     p.cargo("metadata")
-        .masquerade_as_nightly_cargo()
         .with_json(
             r#"
 {
diff --git a/tests/testsuite/package.rs b/tests/testsuite/package.rs
index 64a2e051b1a..46a5061f7e7 100644
--- a/tests/testsuite/package.rs
+++ b/tests/testsuite/package.rs
@@ -795,9 +795,7 @@ fn generated_manifest() {
         .file("bar/src/lib.rs", "")
         .build();
 
-    p.cargo("package --no-verify")
-        .masquerade_as_nightly_cargo()
-        .run();
+    p.cargo("package --no-verify").run();
 
     let f = File::open(&p.root().join("target/package/foo-0.0.1.crate")).unwrap();
     let rewritten_toml = format!(
@@ -949,11 +947,6 @@ fn test_edition() {
         .build();
 
     p.cargo("build -v")
-        .masquerade_as_nightly_cargo()
-        .without_status() // passes on nightly, fails on stable, b/c --edition is nightly-only
-        // --edition is still in flux and we're not passing -Zunstable-options
-        // from Cargo so it will probably error. Only partially match the output
-        // until stuff stabilizes
         .with_stderr_contains(
             "\
 [COMPILING] foo v0.0.1 ([..])
@@ -1086,9 +1079,7 @@ fn package_with_select_features() {
         )
         .build();
 
-    p.cargo("package --features required")
-        .masquerade_as_nightly_cargo()
-        .run();
+    p.cargo("package --features required").run();
 }
 
 #[test]
@@ -1117,9 +1108,7 @@ fn package_with_all_features() {
         )
         .build();
 
-    p.cargo("package --all-features")
-        .masquerade_as_nightly_cargo()
-        .run();
+    p.cargo("package --all-features").run();
 }
 
 #[test]
@@ -1149,7 +1138,6 @@ fn package_no_default_features() {
         .build();
 
     p.cargo("package --no-default-features")
-        .masquerade_as_nightly_cargo()
         .with_stderr_contains("error: This crate requires `required` feature!")
         .with_status(101)
         .run();
diff --git a/tests/testsuite/rename_deps.rs b/tests/testsuite/rename_deps.rs
index 30556efebe8..3547b32d09d 100644
--- a/tests/testsuite/rename_deps.rs
+++ b/tests/testsuite/rename_deps.rs
@@ -122,7 +122,7 @@ fn lots_of_names() {
         .file("foo/src/lib.rs", "pub fn foo4() {}")
         .build();
 
-    p.cargo("build -v").masquerade_as_nightly_cargo().run();
+    p.cargo("build -v").run();
 }
 
 #[test]