test: migrate testsuite precise_pre_release to snapbox

tests/testsuite/precise_pre_release.rs

@@ -1,8 +1,6 @@
 //! Tests for selecting pre-release versions with `update --precise`.
 
-#![allow(deprecated)]
-
-use cargo_test_support::project;
+use cargo_test_support::{project, str};
 
 #[cargo_test]
 fn requires_nightly_cargo() {
@@ -29,16 +27,17 @@ fn requires_nightly_cargo() {
         .with_status(101)
         // This error is suffering from #12579 but still demonstrates that updating to
         // a pre-release does not work on stable
-        .with_stderr(
-            r#"[UPDATING] `dummy-registry` index
+        .with_stderr_data(str![[r#"
+[UPDATING] `dummy-registry` index
 [ERROR] failed to select a version for the requirement `my-dependency = "^0.1.1"`
 candidate versions found which didn't match: 0.1.2-pre.0
 location searched: `dummy-registry` index (which is replacing registry `crates-io`)
 required by package `package v0.0.0 ([ROOT]/foo)`
 if you are looking for the prerelease package it needs to be specified explicitly
     my-dependency = { version = "0.1.2-pre.0" }
-perhaps a crate was updated and forgotten to be re-vendored?"#,
-        )
+perhaps a crate was updated and forgotten to be re-vendored?
+
+"#]])
         .run()
 }
 
@@ -65,11 +64,11 @@ fn update_pre_release() {
 
     p.cargo("update my-dependency --precise 0.1.2-pre.0 -Zunstable-options")
         .masquerade_as_nightly_cargo(&["precise-pre-release"])
-        .with_stderr(
-            r#"[UPDATING] `dummy-registry` index
+        .with_stderr_data(str![[r#"
+[UPDATING] `dummy-registry` index
 [UPDATING] my-dependency v0.1.1 -> v0.1.2-pre.0
-"#,
-        )
+
+"#]])
         .run();
     let lockfile = p.read_lockfile();
     assert!(lockfile.contains("\nname = \"my-dependency\"\nversion = \"0.1.2-pre.0\""));
@@ -98,20 +97,20 @@ fn update_pre_release_differ() {
 
     p.cargo("update -p my-dependency --precise 0.1.2-pre.0 -Zunstable-options")
         .masquerade_as_nightly_cargo(&["precise-pre-release"])
-        .with_stderr(
-            r#"[UPDATING] `dummy-registry` index
+        .with_stderr_data(str![[r#"
+[UPDATING] `dummy-registry` index
 [DOWNGRADING] my-dependency v0.1.2 -> v0.1.2-pre.0
-"#,
-        )
+
+"#]])
         .run();
 
     p.cargo("update -p my-dependency --precise 0.1.2-pre.1 -Zunstable-options")
         .masquerade_as_nightly_cargo(&["precise-pre-release"])
-        .with_stderr(
-            r#"[UPDATING] `dummy-registry` index
+        .with_stderr_data(str![[r#"
+[UPDATING] `dummy-registry` index
 [UPDATING] my-dependency v0.1.2-pre.0 -> v0.1.2-pre.1
-"#,
-        )
+
+"#]])
         .run();
 
     let lockfile = p.read_lockfile();