Replace term with termcolor

Cargo.toml

@@ -27,6 +27,7 @@ no-self-update = []
 # Sorted by alphabetic order
 [dependencies]
 anyhow = "1.0.31"
+atty = "0.2"
 cfg-if = "1.0"
 chrono = "0.4"
 clap = "2"
@@ -57,8 +58,7 @@ sharded-slab = "0.1.1"
 strsim = "0.10"
 tar = "0.4.26"
 tempfile = "3.1"
-# FIXME(issue #1818, #1826, and friends)
-term = "=0.5.1"
+termcolor = "1.1"
 thiserror = "1.0"
 threadpool = "1"
 toml = "0.5"

src/cli/download_tracker.rs

@@ -3,7 +3,7 @@ use std::fmt;
 use std::io::Write;
 use std::time::{Duration, Instant};
 
-use term::Terminal;
+use term2::Terminal;
 
 use super::term2;
 use crate::dist::Notification as In;

src/cli/rustup_mode.rs

@@ -10,8 +10,7 @@ use clap::{App, AppSettings, Arg, ArgGroup, ArgMatches, Shell, SubCommand};
 
 use super::help::*;
 use super::self_update;
-use super::term2;
-use super::term2::Terminal;
+use super::term2::{self, Terminal};
 use super::topical_doc;
 use super::{
     common,
@@ -1196,7 +1195,7 @@ fn show(cfg: &Cfg) -> Result<utils::ExitCode> {
 
     fn print_header<E>(t: &mut term2::StdoutTerminal, s: &str) -> std::result::Result<(), E>
     where
-        E: From<term::Error> + From<std::io::Error>,
+        E: From<std::io::Error>,
     {
         t.attr(term2::Attr::Bold)?;
         writeln!(t, "{}", s)?;