Bump MSRV to 1.88

Author: smoelius

cargo-dylint/tests/ci.rs

@@ -615,7 +615,6 @@ fn markdown_link_check() {
     }
 }
 
-#[ignore = "disabled until `dylint` package switches to edition 2024"]
 #[test]
 fn msrv() {
     for package in &METADATA.packages {

cargo-dylint/tests/integration/package_options.rs

@@ -26,7 +26,7 @@ use tempfile::tempdir;
 // smoelius: `[email protected]` (2024-12-16) requires rustc 1.81.
 // smoelius: `[email protected]` and several other packages require rustc 1.82.
 // smoelius: Edition 2024 was stabilized with Rust 1.85.
-const RUST_VERSION: &str = "1.86.0";
+const RUST_VERSION: &str = "1.88.0";
 
 #[test]
 fn new_package() {

dylint/Cargo.toml

@@ -7,7 +7,7 @@ description = "A tool for running Rust lints from dynamic libraries"
 edition = "2021"
 license = "MIT OR Apache-2.0"
 repository = "https://github.com/trailofbits/dylint"
-rust-version = "1.81"
+rust-version = "1.88"
 
 [dependencies]
 anstyle = { workspace = true }

dylint/src/driver_builder.rs

@@ -2,12 +2,12 @@ use crate::{error::warn, opts};
 use anyhow::{Context, Result, anyhow, ensure};
 use cargo_metadata::MetadataCommand;
 use dylint_internal::{
-    CommandExt, driver as dylint_driver, env, home,
+    CommandExt, driver as dylint_driver, env,
     rustup::{SanitizeEnvironment, toolchain_path},
 };
 use semver::Version;
 use std::{
-    env::consts,
+    env::{consts, home_dir},
     fs::{copy, create_dir_all, rename, write},
     path::{Path, PathBuf},
 };
@@ -97,7 +97,7 @@ fn dylint_drivers() -> Result<PathBuf> {
         ensure!(dylint_drivers.is_dir());
         Ok(dylint_drivers.to_path_buf())
     } else {
-        let home = home::home_dir().ok_or_else(|| anyhow!("Could not find HOME directory"))?;
+        let home = home_dir().ok_or_else(|| anyhow!("Could not find HOME directory"))?;
         let dylint_drivers = Path::new(&home).join(".dylint_drivers");
         if !dylint_drivers.is_dir() {
             create_dir_all(&dylint_drivers).with_context(|| {

examples/general/abs_home_path/src/lib.rs

@@ -6,13 +6,15 @@ extern crate rustc_hir;
 extern crate rustc_span;
 
 use clippy_utils::{diagnostics::span_lint, is_in_test};
-use dylint_internal::home;
 use once_cell::unsync::OnceCell;
 use rustc_ast::ast::LitKind;
 use rustc_hir::{Expr, ExprKind};
 use rustc_lint::{LateContext, LateLintPass, LintContext};
 use rustc_span::Span;
-use std::path::{Path, PathBuf};
+use std::{
+    env::home_dir,
+    path::{Path, PathBuf},
+};
 
 dylint_linting::impl_late_lint! {
     /// ### What it does
@@ -84,7 +86,7 @@ impl<'tcx> LateLintPass<'tcx> for AbsHomePath {
             && path.is_absolute()
             && self
                 .home
-                .get_or_init(home::home_dir)
+                .get_or_init(home_dir)
                 .as_ref()
                 .is_some_and(|dir| path.starts_with(dir))
         {
@@ -114,7 +116,7 @@ fn ui() {
 
     // smoelius: On GitHub, `dylint` is stored on the D drive, not in the user's home directory on
     // the C drive.
-    if let Some(home) = home::home_dir()
+    if let Some(home) = home_dir()
         && !Path::new(env!("CARGO_MANIFEST_DIR")).starts_with(home)
     {
         #[expect(clippy::explicit_write)]
@@ -189,7 +191,7 @@ fn context_allowance() {
     ];
 
     // Skip tests if repository is not stored in the user's home directory
-    if let Some(home) = home::home_dir()
+    if let Some(home) = home_dir()
         && !Path::new(env!("CARGO_MANIFEST_DIR")).starts_with(home)
     {
         #[expect(clippy::explicit_write)]

expensive/tests/boundary_toolchains.rs

@@ -22,9 +22,10 @@ const BOUNDARIES: &[(&str, &str)] = &[
     // https://github.com/rust-lang/rust/commit/0abc6c6e9859bc6915ddc76d484117ff626481c6
     // smoelius: 2025-05-15 is skipped because there is no release for that date.
     ("nightly-2025-05-14", "nightly-2025-05-16"),
+    // smoelius: `libloading-0.9.0` rustc 1.88.
     // https://github.com/rust-lang/rust/pull/135880
     // https://github.com/rust-lang/rust/commit/7d31ae7f351b4aa0fcb47d1d22e04c275bef0653
-    ("nightly-2025-01-24", "nightly-2025-01-25"),
+    // ("nightly-2025-01-24", "nightly-2025-01-25"),
     // smoelius: `[email protected]` and `[email protected]` require rustc 1.86.
     // nightly-2024-03-17 is Rust 1.85.
     // https://github.com/rust-lang/rust/pull/133567

internal/src/home.rs

@@ -1,26 +1,10 @@
-use crate::env;
-use std::path::PathBuf;
+use std::{env, path::PathBuf};
 
 #[must_use]
 pub fn cargo_home() -> Option<PathBuf> {
-    if let Ok(cargo_home) = env::var(env::CARGO_HOME) {
+    if let Ok(cargo_home) = env::var(crate::env::CARGO_HOME) {
         Some(PathBuf::from(cargo_home))
     } else {
-        home_dir().map(|path| path.join(".cargo"))
+        env::home_dir().map(|path| path.join(".cargo"))
     }
 }
-
-// smoelius: https://github.com/rust-lang/cargo/commit/014378f8c07bec557b6c6608e5baf0761a12d504
-#[rustversion::before(1.86)]
-pub use home::home_dir;
-
-#[rustversion::since(1.86)]
-#[must_use]
-pub fn home_dir() -> Option<PathBuf> {
-    // smoelius: The `deprecated` attribute hasn't been removed yet:
-    // https://github.com/rust-lang/rust/pull/132515#discussion_r1829715262
-    // smoelius: The attribute is removed in Rust's master branch:
-    // https://github.com/rust-lang/rust/commit/2c752bcf559975995eb8086a7fa6a7f9b5ba0de8
-    #[allow(deprecated)]
-    std::env::home_dir()
-}