Panic when given a log file with a single line

[AndydeCleyre]

$ tspin --version
tspin 4.0.0
$ uname
Linux
$ printf '%s\n' 'one line' >test.log
$ tspin test.log  # return code: 101
The application panicked (crashed).
Message:  Could not receive EOF signal from oneshot channel: RecvError(())
Location: /home/andy/.cargo/registry/src/index.crates.io-6f17d22bba15001f/tailspin-4.0.0/src/main.rs:54

Backtrace omitted. Run with RUST_BACKTRACE=1 environment variable to display it.
Run with RUST_BACKTRACE=full to include source snippets.
$ <test.log tspin
one line
$ printf '%s\n' 'two lines' >>test.log
$ tspin test.log
one line
two lines

[bensadeh]

Thanks for reporting, as well as clear instruction on how to reproduce.