chore: replace atty with is-terminal (#59)

atty can potentially segfault on windows: https://rustsec.org/advisories/RUSTSEC-2021-0145.html

Author: conradludgate

Cargo.toml

@@ -12,7 +12,7 @@ readme = "README.md"
 tracing-core = "0.1"
 tracing-subscriber = { version = "0.3", default-features = false, features = ["registry", "fmt", "std"] }
 nu-ansi-term = "0.46.0"
-atty = "0.2"
+is-terminal = "0.4.7"
 tracing-log = { version = "0.1", optional = true }
 time = { version = "0.3.20", optional = true, features = ["formatting", "local-offset"] }
 

src/lib.rs

@@ -4,6 +4,7 @@ pub mod time;
 use crate::time::FormatTime;
 use format::{Buffers, ColorLevel, Config, FmtEvent, SpanMode};
 
+use is_terminal::IsTerminal;
 use nu_ansi_term::{Color, Style};
 use std::{
     fmt::{self, Write as _},
@@ -65,7 +66,7 @@ impl Default for HierarchicalLayer {
 
 impl HierarchicalLayer<fn() -> io::Stderr> {
     pub fn new(indent_amount: usize) -> Self {
-        let ansi = atty::is(atty::Stream::Stderr);
+        let ansi = io::stderr().is_terminal();
         let config = Config {
             ansi,
             indent_amount,