Panic at unwrap if docs were built using CARGO_BUILD_TARGET #38
Description
If CARGO_BUILD_TARGET (or any other method of specifying a non-default target) is set, the docs get placed in target/<target>/doc/<package> rather than target/doc/<package>.
The current cargo installable version of cargo-deadlinks (as of a few minutes ago) panics when it encounters this and you haven't manually specified --dir.
thread 'main' panicked at 'called `Result::unwrap()` on an `Err` value: Os { code: 2, kind: NotFound, message: "No such file or directory" }', src/libcore/result.rs:1009:5
stack backtrace:
0: std::sys::unix::backtrace::tracing::imp::unwind_backtrace
at src/libstd/sys/unix/backtrace/tracing/gcc_s.rs:49
1: std::sys_common::backtrace::_print
at src/libstd/sys_common/backtrace.rs:71
2: std::panicking::default_hook::{{closure}}
at src/libstd/sys_common/backtrace.rs:59
at src/libstd/panicking.rs:211
3: std::panicking::default_hook
at src/libstd/panicking.rs:227
4: std::panicking::rust_panic_with_hook
at src/libstd/panicking.rs:491
5: std::panicking::continue_panic_fmt
at src/libstd/panicking.rs:398
6: rust_begin_unwind
at src/libstd/panicking.rs:325
7: core::panicking::panic_fmt
at src/libcore/panicking.rs:95
8: core::result::unwrap_failed
9: cargo_deadlinks::main
10: std::rt::lang_start::{{closure}}
11: std::panicking::try::do_call
at src/libstd/rt.rs:59
at src/libstd/panicking.rs:310
12: __rust_maybe_catch_panic
at src/libpanic_unwind/lib.rs:102
13: std::rt::lang_start_internal
at src/libstd/panicking.rs:289
at src/libstd/panic.rs:398
at src/libstd/rt.rs:58
14: main
15: __libc_start_main
16: <unknown>
Instead, it should do two things:
- Check for and take
CARGO_BUILD_TARGETinto account. - Exit gracefully if it can't find the docs.