chore: Update to toml v0.6, toml_edit v0.18

`toml` replaces `toml_edit::easy`, using `toml_edit` as its parser.

Cargo.toml

@@ -64,7 +64,8 @@ tar = { version = "0.4.38", default-features = false }
 tempfile = "3.0"
 termcolor = "1.1"
 time = { version = "0.3", features = ["parsing", "formatting"]}
-toml_edit =  { version = "0.15.0", features = ["serde", "easy", "perf"] }
+toml_edit = "0.18.0"
+toml = "0.6.0"
 unicode-xid = "0.2.0"
 url = "2.2.2"
 walkdir = "2.2"

benches/capture/src/main.rs

@@ -8,7 +8,6 @@ use flate2::{Compression, GzBuilder};
 use std::fs;
 use std::path::{Path, PathBuf};
 use std::process::Command;
-use toml_edit::easy as toml;
 
 fn main() {
     let force = std::env::args().any(|arg| arg == "-f");

crates/cargo-test-support/Cargo.toml

@@ -25,7 +25,7 @@ serde = { version = "1.0.123", features = ["derive"] }
 serde_json = "1.0"
 tar = { version = "0.4.38", default-features = false }
 termcolor = "1.1.2"
-toml_edit = { version = "0.15.0", features = ["serde", "easy", "perf"] }
+toml = "0.6.0"
 url = "2.2.2"
 
 [target.'cfg(windows)'.dependencies]

crates/cargo-test-support/src/registry.rs

@@ -1391,10 +1391,13 @@ impl Package {
         let mut manifest = String::new();
 
         if !self.cargo_features.is_empty() {
-            manifest.push_str(&format!(
-                "cargo-features = {}\n\n",
-                toml_edit::ser::to_item(&self.cargo_features).unwrap()
-            ));
+            let mut features = String::new();
+            serde::Serialize::serialize(
+                &self.cargo_features,
+                toml::ser::ValueSerializer::new(&mut features),
+            )
+            .unwrap();
+            manifest.push_str(&format!("cargo-features = {}\n\n", features));
         }
 
         manifest.push_str(&format!(

src/cargo/core/manifest.rs

@@ -9,7 +9,6 @@ use anyhow::Context as _;
 use semver::Version;
 use serde::ser;
 use serde::Serialize;
-use toml_edit::easy as toml;
 use url::Url;
 
 use crate::core::compiler::rustdoc::RustdocScrapeExamples;

src/cargo/core/package.rs

@@ -16,7 +16,6 @@ use lazycell::LazyCell;
 use log::{debug, warn};
 use semver::Version;
 use serde::Serialize;
-use toml_edit::easy as toml;
 
 use crate::core::compiler::{CompileKind, RustcTargetData};
 use crate::core::dependency::DepKind;

src/cargo/core/workspace.rs

@@ -8,7 +8,6 @@ use anyhow::{anyhow, bail, Context as _};
 use glob::glob;
 use itertools::Itertools;
 use log::debug;
-use toml_edit::easy as toml;
 use url::Url;
 
 use crate::core::compiler::Unit;

src/cargo/ops/cargo_config.rs

@@ -137,7 +137,8 @@ fn print_toml(config: &Config, opts: &GetOptions<'_>, key: &ConfigKey, cv: &CV)
                     drop_println!(
                         config,
                         "    {}, # {}",
-                        toml_edit::ser::to_item(&val).unwrap(),
+                        serde::Serialize::serialize(val, toml_edit::ser::ValueSerializer::new())
+                            .unwrap(),
                         def
                     );
                 }

src/cargo/ops/cargo_new.rs

@@ -12,7 +12,6 @@ use std::io::{BufRead, BufReader, ErrorKind};
 use std::path::{Path, PathBuf};
 use std::str::FromStr;
 use std::{fmt, slice};
-use toml_edit::easy as toml;
 
 #[derive(Clone, Copy, Debug, PartialEq)]
 pub enum VersionControl {

src/cargo/ops/cargo_output_metadata.rs

@@ -11,7 +11,6 @@ use cargo_platform::Platform;
 use serde::Serialize;
 use std::collections::BTreeMap;
 use std::path::PathBuf;
-use toml_edit::easy as toml;
 
 const VERSION: u32 = 1;
 

src/cargo/ops/common_for_install_and_uninstall.rs

@@ -9,7 +9,6 @@ use std::task::Poll;
 use anyhow::{bail, format_err, Context as _};
 use ops::FilterRule;
 use serde::{Deserialize, Serialize};
-use toml_edit::easy as toml;
 
 use crate::core::compiler::{DirtyReason, Freshness};
 use crate::core::Target;

src/cargo/ops/lockfile.rs

@@ -6,7 +6,6 @@ use crate::util::toml as cargo_toml;
 use crate::util::Filesystem;
 
 use anyhow::Context as _;
-use toml_edit::easy as toml;
 
 pub fn load_pkg_lockfile(ws: &Workspace<'_>) -> CargoResult<Option<Resolve>> {
     if !ws.root().join("Cargo.lock").exists() {
@@ -21,7 +20,7 @@ pub fn load_pkg_lockfile(ws: &Workspace<'_>) -> CargoResult<Option<Resolve>> {
         .with_context(|| format!("failed to read file: {}", f.path().display()))?;
 
     let resolve = (|| -> CargoResult<Option<Resolve>> {
-        let resolve: toml::Value = cargo_toml::parse(&s, f.path(), ws.config())?;
+        let resolve: toml::Table = cargo_toml::parse_document(&s, f.path(), ws.config())?;
         let v: resolver::EncodableResolve = resolve.try_into()?;
         Ok(Some(v.into_resolve(&s, ws)?))
     })()
@@ -101,7 +100,7 @@ fn resolve_to_string_orig(
 }
 
 fn serialize_resolve(resolve: &Resolve, orig: Option<&str>) -> String {
-    let toml = toml_edit::ser::to_item(resolve).unwrap();
+    let toml = toml::Table::try_from(resolve).unwrap();
 
     let mut out = String::new();
 
@@ -140,7 +139,7 @@ fn serialize_resolve(resolve: &Resolve, orig: Option<&str>) -> String {
 
     let deps = toml["package"].as_array().unwrap();
     for dep in deps {
-        let dep = dep.as_inline_table().unwrap();
+        let dep = dep.as_table().unwrap();
 
         out.push_str("[[package]]\n");
         emit_package(dep, &mut out);
@@ -150,7 +149,7 @@ fn serialize_resolve(resolve: &Resolve, orig: Option<&str>) -> String {
         let list = patch["unused"].as_array().unwrap();
         for entry in list {
             out.push_str("[[patch.unused]]\n");
-            emit_package(entry.as_inline_table().unwrap(), &mut out);
+            emit_package(entry.as_table().unwrap(), &mut out);
             out.push('\n');
         }
     }
@@ -160,11 +159,11 @@ fn serialize_resolve(resolve: &Resolve, orig: Option<&str>) -> String {
         //    (which `toml_edit::Table::to_string` only shows)
         // 2. We need to ensure all children tables have `metadata.` prefix
         let meta_table = meta
-            .clone()
-            .into_table()
-            .expect("validation ensures this is a table");
-        let mut meta_doc = toml_edit::Document::new();
-        meta_doc["metadata"] = toml_edit::Item::Table(meta_table);
+            .as_table()
+            .expect("validation ensures this is a table")
+            .clone();
+        let mut meta_doc = toml::Table::new();
+        meta_doc.insert("metadata".to_owned(), toml::Value::Table(meta_table));
 
         out.push_str(&meta_doc.to_string());
     }
@@ -200,7 +199,7 @@ fn are_equal_lockfiles(orig: &str, current: &str, ws: &Workspace<'_>) -> bool {
     orig.lines().eq(current.lines())
 }
 
-fn emit_package(dep: &toml_edit::InlineTable, out: &mut String) {
+fn emit_package(dep: &toml::Table, out: &mut String) {
     out.push_str(&format!("name = {}\n", &dep["name"]));
     out.push_str(&format!("version = {}\n", &dep["version"]));
 

src/cargo/ops/vendor.rs

@@ -14,7 +14,6 @@ use std::ffi::OsStr;
 use std::fs::{self, File, OpenOptions};
 use std::io::{Read, Write};
 use std::path::{Path, PathBuf};
-use toml_edit::easy as toml;
 
 pub struct VendorOptions<'a> {
     pub no_delete: bool,

src/cargo/util/config/key.rs

@@ -111,6 +111,6 @@ fn escape_key_part<'a>(part: &'a str) -> Cow<'a, str> {
         Cow::Borrowed(part)
     } else {
         // This is a bit messy, but toml doesn't expose a function to do this.
-        Cow::Owned(toml_edit::Value::from(part).to_string())
+        Cow::Owned(toml::Value::from(part).to_string())
     }
 }

src/cargo/util/config/mod.rs

@@ -79,8 +79,9 @@ use anyhow::{anyhow, bail, format_err, Context as _};
 use cargo_util::paths;
 use curl::easy::Easy;
 use lazycell::LazyCell;
+use serde::de::IntoDeserializer as _;
 use serde::Deserialize;
-use toml_edit::{easy as toml, Item};
+use toml_edit::Item;
 use url::Url;
 
 mod de;
@@ -903,17 +904,11 @@ impl Config {
         let def = Definition::Environment(key.as_env_key().to_string());
         if self.cli_unstable().advanced_env && env_val.starts_with('[') && env_val.ends_with(']') {
             // Parse an environment string as a TOML array.
-            let toml_s = format!("value={}", env_val);
-            let toml_v: toml::Value = toml::de::from_str(&toml_s).map_err(|e| {
-                ConfigError::new(format!("could not parse TOML list: {}", e), def.clone())
-            })?;
-            let values = toml_v
-                .as_table()
-                .unwrap()
-                .get("value")
-                .unwrap()
-                .as_array()
-                .expect("env var was not array");
+            let toml_v = toml::Value::deserialize(toml::de::ValueDeserializer::new(&env_val))
+                .map_err(|e| {
+                    ConfigError::new(format!("could not parse TOML list: {}", e), def.clone())
+                })?;
+            let values = toml_v.as_array().expect("env var was not array");
             for value in values {
                 // TODO: support other types.
                 let s = value.as_str().ok_or_else(|| {
@@ -1188,14 +1183,14 @@ impl Config {
         }
         let contents = fs::read_to_string(path)
             .with_context(|| format!("failed to read configuration file `{}`", path.display()))?;
-        let toml = cargo_toml::parse(&contents, path, self).with_context(|| {
+        let toml = cargo_toml::parse_document(&contents, path, self).with_context(|| {
             format!("could not parse TOML configuration in `{}`", path.display())
         })?;
         let def = match why_load {
             WhyLoad::Cli => Definition::Cli(Some(path.into())),
             WhyLoad::FileDiscovery => Definition::Path(path.into()),
         };
-        let value = CV::from_toml(def, toml).with_context(|| {
+        let value = CV::from_toml(def, toml::Value::Table(toml)).with_context(|| {
             format!(
                 "failed to load TOML configuration from `{}`",
                 path.display()
@@ -1310,8 +1305,10 @@ impl Config {
                     format!("failed to parse value from --config argument `{arg}` as a dotted key expression")
                 })?;
                 fn non_empty_decor(d: &toml_edit::Decor) -> bool {
-                    d.prefix().map_or(false, |p| !p.trim().is_empty())
-                        || d.suffix().map_or(false, |s| !s.trim().is_empty())
+                    d.prefix()
+                        .map_or(false, |p| !p.as_str().unwrap_or_default().trim().is_empty())
+                        || d.suffix()
+                            .map_or(false, |s| !s.as_str().unwrap_or_default().trim().is_empty())
                 }
                 let ok = {
                     let mut got_to_value = false;
@@ -1371,9 +1368,10 @@ impl Config {
                     );
                 }
 
-                let toml_v: toml::Value = toml::from_document(doc).with_context(|| {
-                    format!("failed to parse value from --config argument `{arg}`")
-                })?;
+                let toml_v: toml::Value = toml::Value::deserialize(doc.into_deserializer())
+                    .with_context(|| {
+                        format!("failed to parse value from --config argument `{arg}`")
+                    })?;
 
                 if toml_v
                     .get("registry")
@@ -2172,14 +2170,12 @@ pub fn save_credentials(
         )
     })?;
 
-    let mut toml = cargo_toml::parse(&contents, file.path(), cfg)?;
+    let mut toml = cargo_toml::parse_document(&contents, file.path(), cfg)?;
 
     // Move the old token location to the new one.
-    if let Some(token) = toml.as_table_mut().unwrap().remove("token") {
+    if let Some(token) = toml.remove("token") {
         let map = HashMap::from([("token".to_string(), token)]);
-        toml.as_table_mut()
-            .unwrap()
-            .insert("registry".into(), map.into());
+        toml.insert("registry".into(), map.into());
     }
 
     if let Some(token) = token {
@@ -2226,17 +2222,16 @@ pub fn save_credentials(
         };
 
         if registry.is_some() {
-            if let Some(table) = toml.as_table_mut().unwrap().remove("registries") {
+            if let Some(table) = toml.remove("registries") {
                 let v = CV::from_toml(path_def, table)?;
                 value.merge(v, false)?;
             }
         }
-        toml.as_table_mut().unwrap().insert(key, value.into_toml());
+        toml.insert(key, value.into_toml());
     } else {
         // logout
-        let table = toml.as_table_mut().unwrap();
         if let Some(registry) = registry {
-            if let Some(registries) = table.get_mut("registries") {
+            if let Some(registries) = toml.get_mut("registries") {
                 if let Some(reg) = registries.get_mut(registry) {
                     let rtable = reg.as_table_mut().ok_or_else(|| {
                         format_err!("expected `[registries.{}]` to be a table", registry)
@@ -2246,7 +2241,7 @@ pub fn save_credentials(
                     rtable.remove("secret-key-subject");
                 }
             }
-        } else if let Some(registry) = table.get_mut("registry") {
+        } else if let Some(registry) = toml.get_mut("registry") {
             let reg_table = registry
                 .as_table_mut()
                 .ok_or_else(|| format_err!("expected `[registry]` to be a table"))?;

src/cargo/util/config/target.rs

@@ -4,7 +4,6 @@ use crate::util::CargoResult;
 use serde::Deserialize;
 use std::collections::{BTreeMap, HashMap};
 use std::path::PathBuf;
-use toml_edit::easy as toml;
 
 /// Config definition of a `[target.'cfg(…)']` table.
 ///

src/cargo/util/toml/mod.rs

@@ -13,9 +13,9 @@ use lazycell::LazyCell;
 use log::{debug, trace};
 use semver::{self, VersionReq};
 use serde::de;
+use serde::de::IntoDeserializer as _;
 use serde::ser;
 use serde::{Deserialize, Serialize};
-use toml_edit::easy as toml;
 use url::Url;
 
 use crate::core::compiler::{CompileKind, CompileTarget};
@@ -36,9 +36,6 @@ use crate::util::{
 mod targets;
 use self::targets::targets;
 
-pub use toml_edit::de::Error as TomlDeError;
-pub use toml_edit::TomlError as TomlEditError;
-
 /// Loads a `Cargo.toml` from a file on disk.
 ///
 /// This could result in a real or virtual manifest being returned.
@@ -90,21 +87,16 @@ pub fn read_manifest_from_str(
     // Provide a helpful error message for a common user error.
     if let Some(package) = toml.get("package").or_else(|| toml.get("project")) {
         if let Some(feats) = package.get("cargo-features") {
-            let mut feats = feats.clone();
-            if let Some(value) = feats.as_value_mut() {
-                // Only keep formatting inside of the `[]` and not formatting around it
-                value.decor_mut().clear();
-            }
             bail!(
                 "cargo-features = {} was found in the wrong location: it \
                  should be set at the top of Cargo.toml before any tables",
-                feats.to_string()
+                feats
             );
         }
     }
 
     let mut unused = BTreeSet::new();
-    let manifest: TomlManifest = serde_ignored::deserialize(toml, |path| {
+    let manifest: TomlManifest = serde_ignored::deserialize(toml.into_deserializer(), |path| {
         let mut key = String::new();
         stringify(&mut key, &path);
         unused.insert(key);
@@ -186,23 +178,7 @@ pub fn read_manifest_from_str(
     }
 }
 
-/// Attempts to parse a string into a [`toml::Value`]. This is not specific to any
-/// particular kind of TOML file.
-///
-/// The purpose of this wrapper is to detect invalid TOML which was previously
-/// accepted and display a warning to the user in that case. The `file` and `config`
-/// parameters are only used by this fallback path.
-pub fn parse(toml: &str, _file: &Path, _config: &Config) -> CargoResult<toml::Value> {
-    // At the moment, no compatibility checks are needed.
-    toml.parse()
-        .map_err(|e| anyhow::Error::from(e).context("could not parse input as TOML"))
-}
-
-pub fn parse_document(
-    toml: &str,
-    _file: &Path,
-    _config: &Config,
-) -> CargoResult<toml_edit::Document> {
+pub fn parse_document(toml: &str, _file: &Path, _config: &Config) -> CargoResult<toml::Table> {
     // At the moment, no compatibility checks are needed.
     toml.parse()
         .map_err(|e| anyhow::Error::from(e).context("could not parse input as TOML"))