diff --git a/Cargo.lock b/Cargo.lock
index b7597b853b2..83385e44827 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -394,7 +394,7 @@ dependencies = [
  "libc",
  "serde",
  "serde_json",
- "thiserror",
+ "thiserror 1.0.69",
  "time",
  "windows-sys 0.52.0",
 ]
@@ -512,7 +512,7 @@ dependencies = [
  "serde",
  "serde-untagged",
  "serde-value",
- "thiserror",
+ "thiserror 1.0.69",
  "toml 0.8.16",
  "unicode-xid",
  "url",
@@ -520,16 +520,16 @@ dependencies = [
 
 [[package]]
 name = "cargo_metadata"
-version = "0.19.0"
+version = "0.19.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "afc309ed89476c8957c50fb818f56fe894db857866c3e163335faa91dc34eb85"
+checksum = "8769706aad5d996120af43197bf46ef6ad0fda35216b4505f926a365a232d924"
 dependencies = [
  "camino",
  "cargo-platform",
  "semver",
  "serde",
  "serde_json",
- "thiserror",
+ "thiserror 2.0.4",
 ]
 
 [[package]]
@@ -786,7 +786,7 @@ dependencies = [
  "percent-encoding",
  "serde",
  "serde_json",
- "thiserror",
+ "thiserror 1.0.69",
  "url",
 ]
 
@@ -999,7 +999,7 @@ dependencies = [
  "console",
  "shell-words",
  "tempfile",
- "thiserror",
+ "thiserror 1.0.69",
  "zeroize",
 ]
 
@@ -1418,7 +1418,7 @@ dependencies = [
  "once_cell",
  "prodash",
  "smallvec",
- "thiserror",
+ "thiserror 1.0.69",
 ]
 
 [[package]]
@@ -1431,7 +1431,7 @@ dependencies = [
  "gix-date",
  "gix-utils",
  "itoa",
- "thiserror",
+ "thiserror 1.0.69",
  "winnow",
 ]
 
@@ -1448,7 +1448,7 @@ dependencies = [
  "gix-trace",
  "kstring",
  "smallvec",
- "thiserror",
+ "thiserror 1.0.69",
  "unicode-bom",
 ]
 
@@ -1458,7 +1458,7 @@ version = "0.2.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a371db66cbd4e13f0ed9dc4c0fea712d7276805fccc877f77e96374d317e87ae"
 dependencies = [
- "thiserror",
+ "thiserror 1.0.69",
 ]
 
 [[package]]
@@ -1467,7 +1467,7 @@ version = "0.4.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "45c8751169961ba7640b513c3b24af61aa962c967aaf04116734975cd5af0c52"
 dependencies = [
- "thiserror",
+ "thiserror 1.0.69",
 ]
 
 [[package]]
@@ -1493,7 +1493,7 @@ dependencies = [
  "gix-features",
  "gix-hash",
  "memmap2",
- "thiserror",
+ "thiserror 1.0.69",
 ]
 
 [[package]]
@@ -1512,7 +1512,7 @@ dependencies = [
  "memchr",
  "once_cell",
  "smallvec",
- "thiserror",
+ "thiserror 1.0.69",
  "unicode-bom",
  "winnow",
 ]
@@ -1527,7 +1527,7 @@ dependencies = [
  "bstr",
  "gix-path",
  "libc",
- "thiserror",
+ "thiserror 1.0.69",
 ]
 
 [[package]]
@@ -1544,7 +1544,7 @@ dependencies = [
  "gix-sec",
  "gix-trace",
  "gix-url",
- "thiserror",
+ "thiserror 1.0.69",
 ]
 
 [[package]]
@@ -1555,7 +1555,7 @@ checksum = "9eed6931f21491ee0aeb922751bd7ec97b4b2fe8fbfedcb678e2a2dce5f3b8c0"
 dependencies = [
  "bstr",
  "itoa",
- "thiserror",
+ "thiserror 1.0.69",
  "time",
 ]
 
@@ -1568,7 +1568,7 @@ dependencies = [
  "bstr",
  "gix-hash",
  "gix-object",
- "thiserror",
+ "thiserror 1.0.69",
 ]
 
 [[package]]
@@ -1588,7 +1588,7 @@ dependencies = [
  "gix-trace",
  "gix-utils",
  "gix-worktree",
- "thiserror",
+ "thiserror 1.0.69",
 ]
 
 [[package]]
@@ -1604,7 +1604,7 @@ dependencies = [
  "gix-path",
  "gix-ref",
  "gix-sec",
- "thiserror",
+ "thiserror 1.0.69",
 ]
 
 [[package]]
@@ -1625,7 +1625,7 @@ dependencies = [
  "parking_lot",
  "prodash",
  "sha1_smol",
- "thiserror",
+ "thiserror 1.0.69",
  "walkdir",
 ]
 
@@ -1647,7 +1647,7 @@ dependencies = [
  "gix-trace",
  "gix-utils",
  "smallvec",
- "thiserror",
+ "thiserror 1.0.69",
 ]
 
 [[package]]
@@ -1680,7 +1680,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f93d7df7366121b5018f947a04d37f034717e113dcf9ccd85c34b58e57a74d5e"
 dependencies = [
  "faster-hex",
- "thiserror",
+ "thiserror 1.0.69",
 ]
 
 [[package]]
@@ -1732,7 +1732,7 @@ dependencies = [
  "memmap2",
  "rustix",
  "smallvec",
- "thiserror",
+ "thiserror 1.0.69",
 ]
 
 [[package]]
@@ -1743,7 +1743,7 @@ checksum = "e3bc7fe297f1f4614774989c00ec8b1add59571dc9b024b4c00acb7dedd4e19d"
 dependencies = [
  "gix-tempfile",
  "gix-utils",
- "thiserror",
+ "thiserror 1.0.69",
 ]
 
 [[package]]
@@ -1770,7 +1770,7 @@ dependencies = [
  "gix-object",
  "gix-revwalk",
  "smallvec",
- "thiserror",
+ "thiserror 1.0.69",
 ]
 
 [[package]]
@@ -1788,7 +1788,7 @@ dependencies = [
  "gix-validate",
  "itoa",
  "smallvec",
- "thiserror",
+ "thiserror 1.0.69",
  "winnow",
 ]
 
@@ -1809,7 +1809,7 @@ dependencies = [
  "gix-quote",
  "parking_lot",
  "tempfile",
- "thiserror",
+ "thiserror 1.0.69",
 ]
 
 [[package]]
@@ -1829,7 +1829,7 @@ dependencies = [
  "memmap2",
  "parking_lot",
  "smallvec",
- "thiserror",
+ "thiserror 1.0.69",
 ]
 
 [[package]]
@@ -1841,7 +1841,7 @@ dependencies = [
  "bstr",
  "faster-hex",
  "gix-trace",
- "thiserror",
+ "thiserror 1.0.69",
 ]
 
 [[package]]
@@ -1853,7 +1853,7 @@ dependencies = [
  "bstr",
  "faster-hex",
  "gix-trace",
- "thiserror",
+ "thiserror 1.0.69",
 ]
 
 [[package]]
@@ -1866,7 +1866,7 @@ dependencies = [
  "gix-trace",
  "home",
  "once_cell",
- "thiserror",
+ "thiserror 1.0.69",
 ]
 
 [[package]]
@@ -1881,7 +1881,7 @@ dependencies = [
  "gix-config-value",
  "gix-glob",
  "gix-path",
- "thiserror",
+ "thiserror 1.0.69",
 ]
 
 [[package]]
@@ -1894,7 +1894,7 @@ dependencies = [
  "gix-config-value",
  "parking_lot",
  "rustix",
- "thiserror",
+ "thiserror 1.0.69",
 ]
 
 [[package]]
@@ -1911,7 +1911,7 @@ dependencies = [
  "gix-transport",
  "gix-utils",
  "maybe-async",
- "thiserror",
+ "thiserror 1.0.69",
  "winnow",
 ]
 
@@ -1923,7 +1923,7 @@ checksum = "cbff4f9b9ea3fa7a25a70ee62f545143abef624ac6aa5884344e70c8b0a1d9ff"
 dependencies = [
  "bstr",
  "gix-utils",
- "thiserror",
+ "thiserror 1.0.69",
 ]
 
 [[package]]
@@ -1943,7 +1943,7 @@ dependencies = [
  "gix-utils",
  "gix-validate",
  "memmap2",
- "thiserror",
+ "thiserror 1.0.69",
  "winnow",
 ]
 
@@ -1958,7 +1958,7 @@ dependencies = [
  "gix-revision",
  "gix-validate",
  "smallvec",
- "thiserror",
+ "thiserror 1.0.69",
 ]
 
 [[package]]
@@ -1972,7 +1972,7 @@ dependencies = [
  "gix-hash",
  "gix-object",
  "gix-revwalk",
- "thiserror",
+ "thiserror 1.0.69",
 ]
 
 [[package]]
@@ -1987,7 +1987,7 @@ dependencies = [
  "gix-hashtable",
  "gix-object",
  "smallvec",
- "thiserror",
+ "thiserror 1.0.69",
 ]
 
 [[package]]
@@ -2014,7 +2014,7 @@ dependencies = [
  "gix-pathspec",
  "gix-refspec",
  "gix-url",
- "thiserror",
+ "thiserror 1.0.69",
 ]
 
 [[package]]
@@ -2052,7 +2052,7 @@ dependencies = [
  "gix-quote",
  "gix-sec",
  "gix-url",
- "thiserror",
+ "thiserror 1.0.69",
 ]
 
 [[package]]
@@ -2069,7 +2069,7 @@ dependencies = [
  "gix-object",
  "gix-revwalk",
  "smallvec",
- "thiserror",
+ "thiserror 1.0.69",
 ]
 
 [[package]]
@@ -2082,7 +2082,7 @@ dependencies = [
  "gix-features",
  "gix-path",
  "home",
- "thiserror",
+ "thiserror 1.0.69",
  "url",
 ]
 
@@ -2104,7 +2104,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "82c27dd34a49b1addf193c92070bcbf3beaf6e10f16a78544de6372e146a0acf"
 dependencies = [
  "bstr",
- "thiserror",
+ "thiserror 1.0.69",
 ]
 
 [[package]]
@@ -2742,7 +2742,7 @@ checksum = "4edc8853320c2a0dab800fbda86253c8938f6ea88510dc92c5f1ed20e794afc1"
 dependencies = [
  "cfg-if",
  "miette-derive",
- "thiserror",
+ "thiserror 1.0.69",
  "unicode-width",
 ]
 
@@ -3407,7 +3407,7 @@ checksum = "4cef0c817217c330b3ef879e06455d726c1cffc800eaf7734d3b4ac63213636b"
 dependencies = [
  "serde",
  "serde_json",
- "thiserror",
+ "thiserror 1.0.69",
  "tracing",
 ]
 
@@ -3930,7 +3930,16 @@ version = "1.0.69"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b6aaf5339b578ea85b50e080feb250a3e8ae8cfcdff9a461c9ec2904bc923f52"
 dependencies = [
- "thiserror-impl",
+ "thiserror-impl 1.0.69",
+]
+
+[[package]]
+name = "thiserror"
+version = "2.0.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2f49a1853cf82743e3b7950f77e0f4d622ca36cf4317cba00c767838bac8d490"
+dependencies = [
+ "thiserror-impl 2.0.4",
 ]
 
 [[package]]
@@ -3944,6 +3953,17 @@ dependencies = [
  "syn 2.0.90",
 ]
 
+[[package]]
+name = "thiserror-impl"
+version = "2.0.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8381894bb3efe0c4acac3ded651301ceee58a15d47c2e34885ed1908ad667061"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.90",
+]
+
 [[package]]
 name = "thread_local"
 version = "1.1.7"
diff --git a/guppy/Cargo.toml b/guppy/Cargo.toml
index 219df0bf529..62591ebea38 100644
--- a/guppy/Cargo.toml
+++ b/guppy/Cargo.toml
@@ -31,7 +31,7 @@ maintenance = { status = "actively-developed" }
 [dependencies]
 ahash.workspace = true
 camino = "1.1.7"
-cargo_metadata = "0.19.0"
+cargo_metadata = "0.19.1"
 cfg-if = "1.0.0"
 debug-ignore = "1.0.5"
 guppy-summaries = { version = "0.7.1", path = "../guppy-summaries", optional = true }
diff --git a/guppy/src/graph/build.rs b/guppy/src/graph/build.rs
index 802a6872af8..4a8cb065fa4 100644
--- a/guppy/src/graph/build.rs
+++ b/guppy/src/graph/build.rs
@@ -590,7 +590,7 @@ impl<'a> BuildTargets<'a> {
         let mut target_kinds = target
             .kind
             .into_iter()
-            .map(target_kind_to_string)
+            .map(|kind| kind.to_string())
             .collect::<Vec<_>>();
         let target_name = target.name.into_boxed_str();
         // Store crate types as strings to avoid exposing cargo_metadata in the
@@ -599,7 +599,7 @@ impl<'a> BuildTargets<'a> {
             target
                 .crate_types
                 .into_iter()
-                .map(crate_type_to_string)
+                .map(|ct| ct.to_string())
                 .collect::<Vec<_>>(),
         );
 
@@ -705,44 +705,6 @@ impl<'a> BuildTargets<'a> {
     }
 }
 
-fn crate_type_to_string(ct: CrateType) -> String {
-    match ct {
-        CrateType::Bin => "bin".to_string(),
-        CrateType::CDyLib => "cdylib".to_string(),
-        CrateType::DyLib => "dylib".to_string(),
-        CrateType::Lib => "lib".to_string(),
-        CrateType::ProcMacro => "proc-macro".to_string(),
-        CrateType::RLib => "rlib".to_string(),
-        CrateType::StaticLib => "staticlib".to_string(),
-        CrateType::Unknown(s) => s,
-        _ => panic!(
-            "unknown crate type -- this impl should have been \
-             replaced with https://github.com/oli-obk/cargo_metadata/issues/275"
-        ),
-    }
-}
-
-fn target_kind_to_string(tk: TargetKind) -> String {
-    match tk {
-        TargetKind::Bench => "bench".to_string(),
-        TargetKind::Bin => "bin".to_string(),
-        TargetKind::CustomBuild => "custom-build".to_string(),
-        TargetKind::CDyLib => "cdylib".to_string(),
-        TargetKind::DyLib => "dylib".to_string(),
-        TargetKind::Example => "example".to_string(),
-        TargetKind::Lib => "lib".to_string(),
-        TargetKind::ProcMacro => "proc-macro".to_string(),
-        TargetKind::RLib => "rlib".to_string(),
-        TargetKind::StaticLib => "staticlib".to_string(),
-        TargetKind::Test => "test".to_string(),
-        TargetKind::Unknown(s) => s,
-        _ => panic!(
-            "unknown target kind {tk:?} -- this impl should have been \
-             replaced with https://github.com/oli-obk/cargo_metadata/issues/275"
-        ),
-    }
-}
-
 struct DependencyResolver<'g> {
     from_id: &'g PackageId,