Vendor dependencies

Let's see how I like this workflow.

vendor/thiserror/tests/test_backtrace.rs

@@ -0,0 +1,297 @@
+#![cfg_attr(
+    thiserror_nightly_testing,
+    feature(error_generic_member_access, provide_any)
+)]
+
+use thiserror::Error;
+
+#[derive(Error, Debug)]
+#[error("...")]
+pub struct Inner;
+
+#[cfg(thiserror_nightly_testing)]
+#[derive(Error, Debug)]
+#[error("...")]
+pub struct InnerBacktrace {
+    backtrace: std::backtrace::Backtrace,
+}
+
+#[cfg(thiserror_nightly_testing)]
+pub mod structs {
+    use super::{Inner, InnerBacktrace};
+    use std::any;
+    use std::backtrace::Backtrace;
+    use std::error::Error;
+    use std::sync::Arc;
+    use thiserror::Error;
+
+    #[derive(Error, Debug)]
+    #[error("...")]
+    pub struct PlainBacktrace {
+        backtrace: Backtrace,
+    }
+
+    #[derive(Error, Debug)]
+    #[error("...")]
+    pub struct ExplicitBacktrace {
+        #[backtrace]
+        backtrace: Backtrace,
+    }
+
+    #[derive(Error, Debug)]
+    #[error("...")]
+    pub struct OptBacktrace {
+        #[backtrace]
+        backtrace: Option<Backtrace>,
+    }
+
+    #[derive(Error, Debug)]
+    #[error("...")]
+    pub struct ArcBacktrace {
+        #[backtrace]
+        backtrace: Arc<Backtrace>,
+    }
+
+    #[derive(Error, Debug)]
+    #[error("...")]
+    pub struct BacktraceFrom {
+        #[from]
+        source: Inner,
+        #[backtrace]
+        backtrace: Backtrace,
+    }
+
+    #[derive(Error, Debug)]
+    #[error("...")]
+    pub struct CombinedBacktraceFrom {
+        #[from]
+        #[backtrace]
+        source: InnerBacktrace,
+    }
+
+    #[derive(Error, Debug)]
+    #[error("...")]
+    pub struct OptBacktraceFrom {
+        #[from]
+        source: Inner,
+        #[backtrace]
+        backtrace: Option<Backtrace>,
+    }
+
+    #[derive(Error, Debug)]
+    #[error("...")]
+    pub struct ArcBacktraceFrom {
+        #[from]
+        source: Inner,
+        #[backtrace]
+        backtrace: Arc<Backtrace>,
+    }
+
+    #[derive(Error, Debug)]
+    #[error("...")]
+    pub struct AnyhowBacktrace {
+        #[backtrace]
+        source: anyhow::Error,
+    }
+
+    #[derive(Error, Debug)]
+    #[error("...")]
+    pub struct BoxDynErrorBacktrace {
+        #[backtrace]
+        source: Box<dyn Error>,
+    }
+
+    #[test]
+    fn test_backtrace() {
+        let error = PlainBacktrace {
+            backtrace: Backtrace::capture(),
+        };
+        assert!(any::request_ref::<Backtrace>(&error).is_some());
+
+        let error = ExplicitBacktrace {
+            backtrace: Backtrace::capture(),
+        };
+        assert!(any::request_ref::<Backtrace>(&error).is_some());
+
+        let error = OptBacktrace {
+            backtrace: Some(Backtrace::capture()),
+        };
+        assert!(any::request_ref::<Backtrace>(&error).is_some());
+
+        let error = ArcBacktrace {
+            backtrace: Arc::new(Backtrace::capture()),
+        };
+        assert!(any::request_ref::<Backtrace>(&error).is_some());
+
+        let error = BacktraceFrom::from(Inner);
+        assert!(any::request_ref::<Backtrace>(&error).is_some());
+
+        let error = CombinedBacktraceFrom::from(InnerBacktrace {
+            backtrace: Backtrace::capture(),
+        });
+        assert!(any::request_ref::<Backtrace>(&error).is_some());
+
+        let error = OptBacktraceFrom::from(Inner);
+        assert!(any::request_ref::<Backtrace>(&error).is_some());
+
+        let error = ArcBacktraceFrom::from(Inner);
+        assert!(any::request_ref::<Backtrace>(&error).is_some());
+
+        let error = AnyhowBacktrace {
+            source: anyhow::Error::msg("..."),
+        };
+        assert!(any::request_ref::<Backtrace>(&error).is_some());
+
+        let error = BoxDynErrorBacktrace {
+            source: Box::new(PlainBacktrace {
+                backtrace: Backtrace::capture(),
+            }),
+        };
+        assert!(any::request_ref::<Backtrace>(&error).is_some());
+    }
+
+    // https://github.com/dtolnay/thiserror/issues/185 -- std::error::Error and
+    // std::any::Provide both have a method called 'provide', so directly
+    // calling it from generated code could be ambiguous.
+    #[test]
+    fn test_provide_name_collision() {
+        use std::any::Provider;
+
+        #[derive(Error, Debug)]
+        #[error("...")]
+        struct MyError {
+            #[source]
+            #[backtrace]
+            x: std::io::Error,
+        }
+
+        let _: dyn Error;
+        let _: dyn Provider;
+    }
+}
+
+#[cfg(thiserror_nightly_testing)]
+pub mod enums {
+    use super::{Inner, InnerBacktrace};
+    use std::any;
+    use std::backtrace::Backtrace;
+    use std::sync::Arc;
+    use thiserror::Error;
+
+    #[derive(Error, Debug)]
+    pub enum PlainBacktrace {
+        #[error("...")]
+        Test { backtrace: Backtrace },
+    }
+
+    #[derive(Error, Debug)]
+    pub enum ExplicitBacktrace {
+        #[error("...")]
+        Test {
+            #[backtrace]
+            backtrace: Backtrace,
+        },
+    }
+
+    #[derive(Error, Debug)]
+    pub enum OptBacktrace {
+        #[error("...")]
+        Test {
+            #[backtrace]
+            backtrace: Option<Backtrace>,
+        },
+    }
+
+    #[derive(Error, Debug)]
+    pub enum ArcBacktrace {
+        #[error("...")]
+        Test {
+            #[backtrace]
+            backtrace: Arc<Backtrace>,
+        },
+    }
+
+    #[derive(Error, Debug)]
+    pub enum BacktraceFrom {
+        #[error("...")]
+        Test {
+            #[from]
+            source: Inner,
+            #[backtrace]
+            backtrace: Backtrace,
+        },
+    }
+
+    #[derive(Error, Debug)]
+    pub enum CombinedBacktraceFrom {
+        #[error("...")]
+        Test {
+            #[from]
+            #[backtrace]
+            source: InnerBacktrace,
+        },
+    }
+
+    #[derive(Error, Debug)]
+    pub enum OptBacktraceFrom {
+        #[error("...")]
+        Test {
+            #[from]
+            source: Inner,
+            #[backtrace]
+            backtrace: Option<Backtrace>,
+        },
+    }
+
+    #[derive(Error, Debug)]
+    pub enum ArcBacktraceFrom {
+        #[error("...")]
+        Test {
+            #[from]
+            source: Inner,
+            #[backtrace]
+            backtrace: Arc<Backtrace>,
+        },
+    }
+
+    #[test]
+    fn test_backtrace() {
+        let error = PlainBacktrace::Test {
+            backtrace: Backtrace::capture(),
+        };
+        assert!(any::request_ref::<Backtrace>(&error).is_some());
+
+        let error = ExplicitBacktrace::Test {
+            backtrace: Backtrace::capture(),
+        };
+        assert!(any::request_ref::<Backtrace>(&error).is_some());
+
+        let error = OptBacktrace::Test {
+            backtrace: Some(Backtrace::capture()),
+        };
+        assert!(any::request_ref::<Backtrace>(&error).is_some());
+
+        let error = ArcBacktrace::Test {
+            backtrace: Arc::new(Backtrace::capture()),
+        };
+        assert!(any::request_ref::<Backtrace>(&error).is_some());
+
+        let error = BacktraceFrom::from(Inner);
+        assert!(any::request_ref::<Backtrace>(&error).is_some());
+
+        let error = CombinedBacktraceFrom::from(InnerBacktrace {
+            backtrace: Backtrace::capture(),
+        });
+        assert!(any::request_ref::<Backtrace>(&error).is_some());
+
+        let error = OptBacktraceFrom::from(Inner);
+        assert!(any::request_ref::<Backtrace>(&error).is_some());
+
+        let error = ArcBacktraceFrom::from(Inner);
+        assert!(any::request_ref::<Backtrace>(&error).is_some());
+    }
+}
+
+#[test]
+#[cfg_attr(not(thiserror_nightly_testing), ignore)]
+fn test_backtrace() {}