fix(test): Reduce over-prescription to the caller

tests/testsuite/build_script.rs

@@ -12,7 +12,6 @@ use cargo_test_support::{
 };
 use cargo_test_support::{rustc_host, sleep_ms, slow_cpu_multiplier, symlink_supported};
 use cargo_util::paths::{self, remove_dir_all};
-use snapbox::data::Inline;
 use std::env;
 use std::fs;
 use std::io;
@@ -4562,7 +4561,7 @@ fn rename_with_link_search_path_cross() {
     );
 }
 
-fn _rename_with_link_search_path(cross: bool, expected: Inline) {
+fn _rename_with_link_search_path(cross: bool, expected: impl IntoData) {
     let target_arg = if cross {
         format!(" --target={}", cross_compile::alternate())
     } else {

tests/testsuite/fix_n_times.rs

@@ -15,7 +15,7 @@
 //! up, and verifying the results.
 
 use cargo_test_support::{basic_manifest, paths, project, str, tools, Execs};
-use snapbox::data::Inline;
+use snapbox::IntoData;
 use std::path::PathBuf;
 use std::sync::{Mutex, OnceLock};
 
@@ -59,7 +59,7 @@ enum Step {
 fn expect_fix_runs_rustc_n_times(
     sequence: &[Step],
     extra_execs: impl FnOnce(&mut Execs),
-    expected_stderr: Inline,
+    expected_stderr: impl IntoData,
     expected_lib_rs: &str,
 ) {
     let rustc = rustc_for_cargo_fix();