exa failing to build on macOS

[mikemadden42]

I'm having issues getting exa to build out of the master branch.

• The exact exa commit you are building (git rev-parse --short HEAD)

$ git rev-parse --short HEAD
dc5c42a

• The version of rustc you are compiling it with (rustc --version)

$ rustc --version
rustc 1.54.0 (a178d0322 2021-07-26)

• Your operating system and hardware platform

$ sw_vers 
ProductName:	macOS
ProductVersion:	11.5.1
BuildVersion:	20G80

• The Rust build target (the exact output of rustc --print cfg)

$ rustc --print cfg
debug_assertions
target_arch="x86_64"
target_endian="little"
target_env=""
target_family="unix"
target_feature="fxsr"
target_feature="sse"
target_feature="sse2"
target_feature="sse3"
target_feature="ssse3"
target_os="macos"
target_pointer_width="64"
target_vendor="apple"
unix

If you are seeing compilation errors, please include the output of the build process.

   Compiling cc v1.0.67
   Compiling zoneinfo_compiled v0.5.1
   Compiling idna v0.2.3
   Compiling exa v0.10.1 (/Users/hulk/rust2/exa)
   Compiling libz-sys v1.1.2
   Compiling libgit2-sys v0.12.19+1.1.0
   Compiling url v2.2.1
   Compiling git2 v0.13.18
error[E0495]: cannot infer an appropriate lifetime due to conflicting requirements
  --> /Users/hulk/.cargo/registry/src/jackfan.us.kg-1ecc6299db9ec823/git2-0.13.18/src/attr.rs:74:15
   |
74 |         match (self, other) {
   |               ^^^^^^^^^^^^^
   |
note: first, the lifetime cannot outlive the anonymous lifetime defined on the method body at 73:26...
  --> /Users/hulk/.cargo/registry/src/jackfan.us.kg-1ecc6299db9ec823/git2-0.13.18/src/attr.rs:73:26
   |
73 |     fn eq(&self, other: &AttrValue<'_>) -> bool {
   |                          ^^^^^^^^^^^^^
note: ...so that the types are compatible
  --> /Users/hulk/.cargo/registry/src/jackfan.us.kg-1ecc6299db9ec823/git2-0.13.18/src/attr.rs:74:15
   |
74 |         match (self, other) {
   |               ^^^^^^^^^^^^^
   = note: expected `(&AttrValue<'_>, &AttrValue<'_>)`
              found `(&AttrValue<'_>, &AttrValue<'_>)`
note: but, the lifetime must be valid for the lifetime `'_` as defined on the impl at 72:30...
  --> /Users/hulk/.cargo/registry/src/jackfan.us.kg-1ecc6299db9ec823/git2-0.13.18/src/attr.rs:72:30
   |
72 | impl PartialEq for AttrValue<'_> {
   |                              ^^
note: ...so that the types are compatible
  --> /Users/hulk/.cargo/registry/src/jackfan.us.kg-1ecc6299db9ec823/git2-0.13.18/src/attr.rs:79:16
   |
79 |             | (Self::Bytes(bytes), AttrValue::String(string)) => string.as_bytes() == *bytes,
   |                ^^^^^^^^^^^^^^^^^^
   = note: expected `AttrValue<'_>`
              found `AttrValue<'_>`

error: aborting due to previous error

For more information about this error, try `rustc --explain E0495`.
error: could not compile `git2`

To learn more, run the command again with --verbose.

---

[j-tai]

Fixed by #920