Update dev-dependencies to thiserror v2

.github/workflows/ci.yml

@@ -63,9 +63,9 @@ jobs:
         with:
           toolchain: ${{matrix.rust}}
           components: rust-src
-      - run: cargo check
-      - run: cargo check --no-default-features
-      - run: cargo check --features backtrace
+      - run: cargo check --manifest-path tests/crate/Cargo.toml
+      - run: cargo check --manifest-path tests/crate/Cargo.toml --no-default-features
+      - run: cargo check --manifest-path tests/crate/Cargo.toml --features backtrace
         if: matrix.rust != '1.65.0' && matrix.rust != '1.52.0' && matrix.rust != '1.51.0' && matrix.rust != '1.50.0' && matrix.rust != '1.39.0'
 
   minimal:

Cargo.toml

@@ -26,7 +26,7 @@ backtrace = { version = "0.3.51", optional = true }
 futures = { version = "0.3", default-features = false }
 rustversion = "1.0.6"
 syn = { version = "2.0", features = ["full"] }
-thiserror = "1.0.45"
+thiserror = "2"
 trybuild = { version = "1.0.66", features = ["diff"] }
 
 [lib]

tests/crate/Cargo.toml

@@ -0,0 +1,17 @@
+[package]
+name = "anyhow_test"
+version = "0.0.0"
+authors = ["David Tolnay <[email protected]>"]
+edition = "2018"
+publish = false
+
+[lib]
+path = "test.rs"
+
+[dependencies]
+anyhow = { path = "../..", default-features = false }
+
+[features]
+default = ["std"]
+std = ["anyhow/std"]
+backtrace = ["anyhow/backtrace"]

tests/crate/test.rs

@@ -0,0 +1,3 @@
+#![no_std]
+
+pub use anyhow::*;