v1.0.69

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• Documentation improvements

v1.0.68

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• Opt out of -Zrustdoc-scrape-examples on docs.rs for now

v1.0.67

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• Improve the backtrace captured when context() is used on an Option (#​280)

v1.0.66

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• Reduce unhelpful backtrace frames in backtraces captured during a context call (#​279)

v1.0.65

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• impl Provider for anyhow::Error

v1.0.64

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• Correctly propagate Backtrace when using #[source] anyhow::Error with thiserror crate (#​231)

v1.0.63

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• Expose backtraces via the new "generic member access" API on the Error trait (https://github.com/rust-lang/rust/issues/99301, https://github.com/rust-lang/rust/issues/96024)

v1.0.62

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• Fix extra rebuilding when interleaving command-line cargo invocations with IDE builds (#​261)

v1.0.61

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• Work around rust-analyzer builds poisoning all subsequent command-line cargo builds (#​252)

v1.0.60

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• Propagate --target to rustc invocation when deciding about backtrace support (#​249, thanks @​RalfJung)

v1.0.59

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• Update crates.io metadata to include no-std category

v1.0.58

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• Fix some broken links in documentation

v1.0.57

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• Remove a log4rs-specific workaround from bail! macro implementation

v1.0.56

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• Add must_use warning when an Error created by anyhow! is not used, perhaps because the programmer meant to write bail! instead (#​229)

v1.0.55

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• Documentation improvements

v1.0.54

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• Construct more helpful error message from ensure! when the expression involves a negative literal const generic as the first generic argument of a method call (#​224)

v1.0.53

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• Retrigger docs.rs build to work around rustdoc regression (https://github.com/rust-lang/rust/issues/92331)

v1.0.52

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• Reduce overhead of backtrace capture in the case that backtraces are not enabled (#​212)

v1.0.51

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• Show doc for Ok fn

v1.0.50

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• Recognize more types of expressions in ensure! macro (#​199, #​200, #​202, #​203, #​204, #​205, #​206)

v1.0.49

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• Add a function anyhow::Ok(v) equivalent to Ok::<_, anyhow::Error>(v) (#​192)

v1.0.48

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• Include a Debug rendering of lhs and rhs in ensure! messages (#​193, #​194, #​195, #​196, #​197, #​198)

Example:

```rust
ensure!(flags.len() <= 40);
```

```rust
ensure!(kind == Kind::File);
```

Before:

```console
Condition failed: `flags.len() <= 40`
Condition failed: `kind == Kind::File`
```

After:

```console
Condition failed: `flags.len() <= 40` (99 vs 40)
Condition failed: `kind == Kind::File` (Symlink vs File)
```

v1.0.47

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• Fixes for implicit format args support

v1.0.46

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• Support for implicit format args to match println and other std macros (https://rust-lang.github.io/rfcs/2795-format-args-implicit-identifiers.html)

  let var = ...;
  let error = anyhow!("interpolate {var}");  // equivalent to anyhow!("interpolate {var}", var=var)

• Detect missing fmt arguments at compile time: anyhow!("{} not found") (#​55)

• Reduce occurrence of "future cannot be shared between threads safely" in async code using anyhow macros (#​186)

v1.0.45

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• Fix non-compilable macro expansion if downstream crate calls anyhow!, ensure!, or bail! with format args and is built with #![no_std] or #![no_implicit_prelude] (#​177)

v1.0.44

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• Mark error constructors cold to help LLVM optimize code paths not leading to error (#​166, thanks @​stepancheg)

v1.0.43

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• Take -Zallow-features restrictions from Cargo configuration file into account on sufficiently new versions of nightly Cargo (#​157, thanks @​jonhoo)

v1.0.42

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• Enable Android's automated tooling to pull in test coverage improvements

v1.0.41

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• Disallow incompatible old versions of backtrace crate (#​155, thanks @​jfirebaugh)

v1.0.40

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• Reduce memory footprint of errors on Rust versions 1.51+ (#​145)

v1.0.39

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• Add an opt-in implementation of Error::backtrace on stable compilers based on the backtrace crate (#​143)

  [dependencies]
  anyhow = { version = "1.0", features = ["backtrace"] }

v1.0.38

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• Support using anyhow::Error in code executed by Miri (#​134, thanks @​thomcc)

v1.0.37

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• Improve compiler diagnostic on calling macro with a temporary value (#​133)

v1.0.36

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• Make anyhow::Error ABI compatible with void* for round tripping through a C FFI (#​132)

v1.0.35

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• Support 1-argument use of ensure! (#​126)

  ensure!(depth <= MAX_DEPTH);
  // error msg on a false condition would be "Condition failed: `depth <= MAX_DEPTH`"

v1.0.34

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• Fix semicolon use in bail! macro in preparation for https://github.com/rust-lang/rust/pull/78685 (#​120)

v1.0.33

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• Clarify documentation of anyhow!, bail!, ensure! macros (#​114)

v1.0.32

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• Add impl From<anyhow::Error> for Box<dyn Error + Send + 'static> (#​103)

v1.0.31

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• Restore "Stack backtrace" header label above the backtrace in {:?} representation (#​92)

v1.0.30

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• Hide an error message that appears when building with cargo rustc -vv (#​91, thanks @​eoger)

v1.0.29

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• Documentation improvements