Update faerie, remove usage of failure (#591)

This commit removes the usage of the `failure` crate and finishes up the
final pieces of the migration to `std::error::Error` and `anyhow`. The
`faerie` crate was updated to pull in its migration from `failure` to
`anyhow` as well.

crates/debug/src/transform/attr.rs

@@ -5,7 +5,7 @@ use super::unit::PendingDieRef;
 use super::{DebugInputContext, Reader, TransformError};
 use crate::HashMap;
 use alloc::vec::Vec;
-use failure::Error;
+use anyhow::Error;
 use gimli::{
     write, AttributeValue, DebugLineOffset, DebugStr, DebuggingInformationEntry, UnitOffset,
 };

crates/debug/src/transform/expression.rs

@@ -1,12 +1,12 @@
 use super::address_transform::AddressTransform;
 use crate::{HashMap, HashSet};
 use alloc::vec::Vec;
+use anyhow::Error;
 use cranelift_codegen::ir::{StackSlots, ValueLabel, ValueLoc};
 use cranelift_codegen::isa::RegUnit;
 use cranelift_codegen::ValueLabelsRanges;
 use cranelift_entity::EntityRef;
 use cranelift_wasm::{get_vmctx_value_label, DefinedFuncIndex};
-use failure::Error;
 use gimli::{self, write, Expression, Operation, Reader, ReaderOffset, Register, X86_64};
 use more_asserts::{assert_le, assert_lt};
 

crates/debug/src/transform/line_program.rs

@@ -3,9 +3,9 @@ use super::attr::clone_attr_string;
 use super::{Reader, TransformError};
 use alloc::collections::BTreeMap;
 use alloc::vec::Vec;
+use anyhow::Error;
 use core::iter::FromIterator;
 use cranelift_entity::EntityRef;
-use failure::Error;
 use gimli::{
     write, DebugLine, DebugLineOffset, DebugStr, DebuggingInformationEntry, LineEncoding, Unit,
 };

crates/debug/src/transform/mod.rs

@@ -1,7 +1,7 @@
 use crate::gc::build_dependencies;
 use crate::{DebugInfoData, HashSet};
+use anyhow::Error;
 use cranelift_codegen::isa::TargetFrontendConfig;
-use failure::Error;
 use gimli::{
     write, DebugAddr, DebugAddrBase, DebugLine, DebugStr, LocationLists, RangeLists,
     UnitSectionOffset,

crates/debug/src/transform/range_info_builder.rs

@@ -1,9 +1,9 @@
 use super::address_transform::AddressTransform;
 use super::{DebugInputContext, Reader};
 use alloc::vec::Vec;
+use anyhow::Error;
 use cranelift_entity::EntityRef;
 use cranelift_wasm::DefinedFuncIndex;
-use failure::Error;
 use gimli::{write, AttributeValue, DebuggingInformationEntry, RangeListsOffset};
 use more_asserts::assert_lt;
 

crates/debug/src/transform/simulate.rs

@@ -5,9 +5,9 @@ use crate::read_debuginfo::WasmFileInfo;
 use crate::{HashMap, HashSet};
 use alloc::string::String;
 use alloc::vec::Vec;
+use anyhow::Error;
 use cranelift_entity::EntityRef;
 use cranelift_wasm::get_vmctx_value_label;
-use failure::Error;
 use gimli::write;
 use gimli::{self, LineEncoding};
 use std::path::PathBuf;

crates/debug/src/transform/unit.rs

@@ -7,8 +7,8 @@ use super::utils::{add_internal_types, append_vmctx_info, get_function_frame_inf
 use super::{DebugInputContext, Reader, TransformError};
 use crate::{HashMap, HashSet};
 use alloc::{string::String, vec::Vec};
+use anyhow::Error;
 use cranelift_entity::EntityRef;
-use failure::Error;
 use gimli::write;
 use gimli::{AttributeValue, DebuggingInformationEntry, Unit, UnitOffset};
 use wasmtime_environ::{ModuleVmctxInfo, ValueLabelsRanges};

crates/debug/src/transform/utils.rs

@@ -1,8 +1,8 @@
 use super::address_transform::AddressTransform;
 use super::expression::{CompiledExpression, FunctionFrameInfo};
 use alloc::vec::Vec;
+use anyhow::Error;
 use cranelift_wasm::DefinedFuncIndex;
-use failure::Error;
 use gimli::write;
 use wasmtime_environ::{ModuleVmctxInfo, ValueLabelsRanges};