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[INFO] [stderr]     Checking ch08-ui v0.1.0 (/opt/rustwide/workdir/ch08-ui)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch07-damage/src/damage_system.rs:18:14
[INFO] [stdout]    |
[INFO] [stdout] 18 |         for (mut stats, damage) in (&mut stats, &damage).join() {
[INFO] [stdout]    |              ----^^^^^
[INFO] [stdout]    |              |
[INFO] [stdout]    |              help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking ch11-loadsave v0.1.0 (/opt/rustwide/workdir/ch11-loadsave)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch07-damage/src/monster_ai_system.rs:40:22
[INFO] [stdout]    |
[INFO] [stdout] 40 |         for (entity, mut viewshed, _monster, mut pos) in
[INFO] [stdout]    |                      ----^^^^^^^^
[INFO] [stdout]    |                      |
[INFO] [stdout]    |                      help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch07-damage/src/monster_ai_system.rs:40:46
[INFO] [stdout]    |
[INFO] [stdout] 40 |         for (entity, mut viewshed, _monster, mut pos) in
[INFO] [stdout]    |                                              ----^^^
[INFO] [stdout]    |                                              |
[INFO] [stdout]    |                                              help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking ch04-newmap v0.1.0 (/opt/rustwide/workdir/ch04-newmap)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch07-damage/src/damage_system.rs:18:14
[INFO] [stdout]    |
[INFO] [stdout] 18 |         for (mut stats, damage) in (&mut stats, &damage).join() {
[INFO] [stdout]    |              ----^^^^^
[INFO] [stdout]    |              |
[INFO] [stdout]    |              help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch07-damage/src/monster_ai_system.rs:40:22
[INFO] [stdout]    |
[INFO] [stdout] 40 |         for (entity, mut viewshed, _monster, mut pos) in
[INFO] [stdout]    |                      ----^^^^^^^^
[INFO] [stdout]    |                      |
[INFO] [stdout]    |                      help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch07-damage/src/monster_ai_system.rs:40:46
[INFO] [stdout]    |
[INFO] [stdout] 40 |         for (entity, mut viewshed, _monster, mut pos) in
[INFO] [stdout]    |                                              ----^^^
[INFO] [stdout]    |                                              |
[INFO] [stdout]    |                                              help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch08-ui/src/damage_system.rs:18:14
[INFO] [stdout]    |
[INFO] [stdout] 18 |         for (mut stats, damage) in (&mut stats, &damage).join() {
[INFO] [stdout]    |              ----^^^^^
[INFO] [stdout]    |              |
[INFO] [stdout]    |              help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch08-ui/src/monster_ai_system.rs:40:22
[INFO] [stdout]    |
[INFO] [stdout] 40 |         for (entity, mut viewshed, _monster, mut pos) in
[INFO] [stdout]    |                      ----^^^^^^^^
[INFO] [stdout]    |                      |
[INFO] [stdout]    |                      help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch08-ui/src/monster_ai_system.rs:40:46
[INFO] [stdout]    |
[INFO] [stdout] 40 |         for (entity, mut viewshed, _monster, mut pos) in
[INFO] [stdout]    |                                              ----^^^
[INFO] [stdout]    |                                              |
[INFO] [stdout]    |                                              help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking ch06-monsters v0.1.0 (/opt/rustwide/workdir/ch06-monsters)
[INFO] [stderr]     Checking ch20-magicmapping v0.1.0 (/opt/rustwide/workdir/ch20-magicmapping)
[INFO] [stderr]     Checking ch21-rexmenu v0.1.0 (/opt/rustwide/workdir/ch21-rexmenu)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch10-ranged/src/damage_system.rs:18:14
[INFO] [stdout]    |
[INFO] [stdout] 18 |         for (mut stats, damage) in (&mut stats, &damage).join() {
[INFO] [stdout]    |              ----^^^^^
[INFO] [stdout]    |              |
[INFO] [stdout]    |              help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch10-ranged/src/monster_ai_system.rs:42:22
[INFO] [stdout]    |
[INFO] [stdout] 42 |         for (entity, mut viewshed, _monster, mut pos) in
[INFO] [stdout]    |                      ----^^^^^^^^
[INFO] [stdout]    |                      |
[INFO] [stdout]    |                      help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch10-ranged/src/monster_ai_system.rs:42:46
[INFO] [stdout]    |
[INFO] [stdout] 42 |         for (entity, mut viewshed, _monster, mut pos) in
[INFO] [stdout]    |                                              ----^^^
[INFO] [stdout]    |                                              |
[INFO] [stdout]    |                                              help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking ch09-items v0.1.0 (/opt/rustwide/workdir/ch09-items)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch10-ranged/src/damage_system.rs:18:14
[INFO] [stdout]    |
[INFO] [stdout] 18 |         for (mut stats, damage) in (&mut stats, &damage).join() {
[INFO] [stdout]    |              ----^^^^^
[INFO] [stdout]    |              |
[INFO] [stdout]    |              help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch10-ranged/src/monster_ai_system.rs:42:22
[INFO] [stdout]    |
[INFO] [stdout] 42 |         for (entity, mut viewshed, _monster, mut pos) in
[INFO] [stdout]    |                      ----^^^^^^^^
[INFO] [stdout]    |                      |
[INFO] [stdout]    |                      help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch10-ranged/src/monster_ai_system.rs:42:46
[INFO] [stdout]    |
[INFO] [stdout] 42 |         for (entity, mut viewshed, _monster, mut pos) in
[INFO] [stdout]    |                                              ----^^^
[INFO] [stdout]    |                                              |
[INFO] [stdout]    |                                              help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch08-ui/src/damage_system.rs:18:14
[INFO] [stdout]    |
[INFO] [stdout] 18 |         for (mut stats, damage) in (&mut stats, &damage).join() {
[INFO] [stdout]    |              ----^^^^^
[INFO] [stdout]    |              |
[INFO] [stdout]    |              help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch09-items/src/damage_system.rs:18:14
[INFO] [stdout]    |
[INFO] [stdout] 18 |         for (mut stats, damage) in (&mut stats, &damage).join() {
[INFO] [stdout]    |              ----^^^^^
[INFO] [stdout]    |              |
[INFO] [stdout]    |              help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch08-ui/src/monster_ai_system.rs:40:22
[INFO] [stdout]    |
[INFO] [stdout] 40 |         for (entity, mut viewshed, _monster, mut pos) in
[INFO] [stdout]    |                      ----^^^^^^^^
[INFO] [stdout]    |                      |
[INFO] [stdout]    |                      help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch08-ui/src/monster_ai_system.rs:40:46
[INFO] [stdout]    |
[INFO] [stdout] 40 |         for (entity, mut viewshed, _monster, mut pos) in
[INFO] [stdout]    |                                              ----^^^
[INFO] [stdout]    |                                              |
[INFO] [stdout]    |                                              help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch22-simpletraps/src/monster_ai_system.rs:46:22
[INFO] [stdout]    |
[INFO] [stdout] 46 |         for (entity, mut viewshed, _monster, mut pos) in
[INFO] [stdout]    |                      ----^^^^^^^^
[INFO] [stdout]    |                      |
[INFO] [stdout]    |                      help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch22-simpletraps/src/monster_ai_system.rs:46:46
[INFO] [stdout]    |
[INFO] [stdout] 46 |         for (entity, mut viewshed, _monster, mut pos) in
[INFO] [stdout]    |                                              ----^^^
[INFO] [stdout]    |                                              |
[INFO] [stdout]    |                                              help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch09-items/src/monster_ai_system.rs:40:22
[INFO] [stdout]    |
[INFO] [stdout] 40 |         for (entity, mut viewshed, _monster, mut pos) in
[INFO] [stdout]    |                      ----^^^^^^^^
[INFO] [stdout]    |                      |
[INFO] [stdout]    |                      help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch09-items/src/monster_ai_system.rs:40:46
[INFO] [stdout]    |
[INFO] [stdout] 40 |         for (entity, mut viewshed, _monster, mut pos) in
[INFO] [stdout]    |                                              ----^^^
[INFO] [stdout]    |                                              |
[INFO] [stdout]    |                                              help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch22-simpletraps/src/damage_system.rs:20:22
[INFO] [stdout]    |
[INFO] [stdout] 20 |         for (entity, mut stats, damage) in (&entities, &mut stats, &damage).join() {
[INFO] [stdout]    |                      ----^^^^^
[INFO] [stdout]    |                      |
[INFO] [stdout]    |                      help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch22-simpletraps/src/monster_ai_system.rs:46:22
[INFO] [stdout]    |
[INFO] [stdout] 46 |         for (entity, mut viewshed, _monster, mut pos) in
[INFO] [stdout]    |                      ----^^^^^^^^
[INFO] [stdout]    |                      |
[INFO] [stdout]    |                      help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch22-simpletraps/src/monster_ai_system.rs:46:46
[INFO] [stdout]    |
[INFO] [stdout] 46 |         for (entity, mut viewshed, _monster, mut pos) in
[INFO] [stdout]    |                                              ----^^^
[INFO] [stdout]    |                                              |
[INFO] [stdout]    |                                              help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch22-simpletraps/src/damage_system.rs:20:22
[INFO] [stdout]    |
[INFO] [stdout] 20 |         for (entity, mut stats, damage) in (&entities, &mut stats, &damage).join() {
[INFO] [stdout]    |                      ----^^^^^
[INFO] [stdout]    |                      |
[INFO] [stdout]    |                      help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch22-simpletraps/src/hunger_system.rs:20:22
[INFO] [stdout]    |
[INFO] [stdout] 20 |         for (entity, mut clock) in (&entities, &mut hunger_clock).join() {
[INFO] [stdout]    |                      ----^^^^^
[INFO] [stdout]    |                      |
[INFO] [stdout]    |                      help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch22-simpletraps/src/particle_system.rs:62:22
[INFO] [stdout]    |
[INFO] [stdout] 62 |         for (entity, mut particle) in (&entities, &mut particles).join() {
[INFO] [stdout]    |                      ----^^^^^^^^
[INFO] [stdout]    |                      |
[INFO] [stdout]    |                      help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch22-simpletraps/src/hunger_system.rs:20:22
[INFO] [stdout]    |
[INFO] [stdout] 20 |         for (entity, mut clock) in (&entities, &mut hunger_clock).join() {
[INFO] [stdout]    |                      ----^^^^^
[INFO] [stdout]    |                      |
[INFO] [stdout]    |                      help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch22-simpletraps/src/particle_system.rs:62:22
[INFO] [stdout]    |
[INFO] [stdout] 62 |         for (entity, mut particle) in (&entities, &mut particles).join() {
[INFO] [stdout]    |                      ----^^^^^^^^
[INFO] [stdout]    |                      |
[INFO] [stdout]    |                      help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch11-loadsave/src/monster_ai_system.rs:42:22
[INFO] [stdout]    |
[INFO] [stdout] 42 |         for (entity, mut viewshed, _monster, mut pos) in
[INFO] [stdout]    |                      ----^^^^^^^^
[INFO] [stdout]    |                      |
[INFO] [stdout]    |                      help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch11-loadsave/src/monster_ai_system.rs:42:46
[INFO] [stdout]    |
[INFO] [stdout] 42 |         for (entity, mut viewshed, _monster, mut pos) in
[INFO] [stdout]    |                                              ----^^^
[INFO] [stdout]    |                                              |
[INFO] [stdout]    |                                              help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch11-loadsave/src/damage_system.rs:18:14
[INFO] [stdout]    |
[INFO] [stdout] 18 |         for (mut stats, damage) in (&mut stats, &damage).join() {
[INFO] [stdout]    |              ----^^^^^
[INFO] [stdout]    |              |
[INFO] [stdout]    |              help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch21-rexmenu/src/monster_ai_system.rs:44:22
[INFO] [stdout]    |
[INFO] [stdout] 44 |         for (entity, mut viewshed, _monster, mut pos) in
[INFO] [stdout]    |                      ----^^^^^^^^
[INFO] [stdout]    |                      |
[INFO] [stdout]    |                      help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch21-rexmenu/src/monster_ai_system.rs:44:46
[INFO] [stdout]    |
[INFO] [stdout] 44 |         for (entity, mut viewshed, _monster, mut pos) in
[INFO] [stdout]    |                                              ----^^^
[INFO] [stdout]    |                                              |
[INFO] [stdout]    |                                              help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch21-rexmenu/src/damage_system.rs:20:22
[INFO] [stdout]    |
[INFO] [stdout] 20 |         for (entity, mut stats, damage) in (&entities, &mut stats, &damage).join() {
[INFO] [stdout]    |                      ----^^^^^
[INFO] [stdout]    |                      |
[INFO] [stdout]    |                      help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking ch17-blood v0.1.0 (/opt/rustwide/workdir/ch17-blood)
[INFO] [stderr]     Checking ch16-nicewalls v0.1.0 (/opt/rustwide/workdir/ch16-nicewalls)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch13-difficulty/src/monster_ai_system.rs:42:22
[INFO] [stdout]    |
[INFO] [stdout] 42 |         for (entity, mut viewshed, _monster, mut pos) in
[INFO] [stdout]    |                      ----^^^^^^^^
[INFO] [stdout]    |                      |
[INFO] [stdout]    |                      help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch13-difficulty/src/monster_ai_system.rs:42:46
[INFO] [stdout]    |
[INFO] [stdout] 42 |         for (entity, mut viewshed, _monster, mut pos) in
[INFO] [stdout]    |                                              ----^^^
[INFO] [stdout]    |                                              |
[INFO] [stdout]    |                                              help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch14-gear/src/monster_ai_system.rs:42:22
[INFO] [stdout]    |
[INFO] [stdout] 42 |         for (entity, mut viewshed, _monster, mut pos) in
[INFO] [stdout]    |                      ----^^^^^^^^
[INFO] [stdout]    |                      |
[INFO] [stdout]    |                      help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch14-gear/src/monster_ai_system.rs:42:46
[INFO] [stdout]    |
[INFO] [stdout] 42 |         for (entity, mut viewshed, _monster, mut pos) in
[INFO] [stdout]    |                                              ----^^^
[INFO] [stdout]    |                                              |
[INFO] [stdout]    |                                              help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch14-gear/src/damage_system.rs:17:14
[INFO] [stdout]    |
[INFO] [stdout] 17 |         for (mut stats, damage) in (&mut stats, &damage).join() {
[INFO] [stdout]    |              ----^^^^^
[INFO] [stdout]    |              |
[INFO] [stdout]    |              help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch12-delvingdeeper/src/monster_ai_system.rs:42:22
[INFO] [stdout]    |
[INFO] [stdout] 42 |         for (entity, mut viewshed, _monster, mut pos) in
[INFO] [stdout]    |                      ----^^^^^^^^
[INFO] [stdout]    |                      |
[INFO] [stdout]    |                      help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch12-delvingdeeper/src/monster_ai_system.rs:42:46
[INFO] [stdout]    |
[INFO] [stdout] 42 |         for (entity, mut viewshed, _monster, mut pos) in
[INFO] [stdout]    |                                              ----^^^
[INFO] [stdout]    |                                              |
[INFO] [stdout]    |                                              help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch12-delvingdeeper/src/damage_system.rs:18:14
[INFO] [stdout]    |
[INFO] [stdout] 18 |         for (mut stats, damage) in (&mut stats, &damage).join() {
[INFO] [stdout]    |              ----^^^^^
[INFO] [stdout]    |              |
[INFO] [stdout]    |              help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch13-difficulty/src/damage_system.rs:18:14
[INFO] [stdout]    |
[INFO] [stdout] 18 |         for (mut stats, damage) in (&mut stats, &damage).join() {
[INFO] [stdout]    |              ----^^^^^
[INFO] [stdout]    |              |
[INFO] [stdout]    |              help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch09-items/src/damage_system.rs:18:14
[INFO] [stdout]    |
[INFO] [stdout] 18 |         for (mut stats, damage) in (&mut stats, &damage).join() {
[INFO] [stdout]    |              ----^^^^^
[INFO] [stdout]    |              |
[INFO] [stdout]    |              help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch14-gear/src/monster_ai_system.rs:42:22
[INFO] [stdout]    |
[INFO] [stdout] 42 |         for (entity, mut viewshed, _monster, mut pos) in
[INFO] [stdout]    |                      ----^^^^^^^^
[INFO] [stdout]    |                      |
[INFO] [stdout]    |                      help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch14-gear/src/monster_ai_system.rs:42:46
[INFO] [stdout]    |
[INFO] [stdout] 42 |         for (entity, mut viewshed, _monster, mut pos) in
[INFO] [stdout]    |                                              ----^^^
[INFO] [stdout]    |                                              |
[INFO] [stdout]    |                                              help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch14-gear/src/damage_system.rs:17:14
[INFO] [stdout]    |
[INFO] [stdout] 17 |         for (mut stats, damage) in (&mut stats, &damage).join() {
[INFO] [stdout]    |              ----^^^^^
[INFO] [stdout]    |              |
[INFO] [stdout]    |              help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking ch02-helloecs v0.1.0 (/opt/rustwide/workdir/ch02-helloecs)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch21-rexmenu/src/hunger_system.rs:20:22
[INFO] [stdout]    |
[INFO] [stdout] 20 |         for (entity, mut clock) in (&entities, &mut hunger_clock).join() {
[INFO] [stdout]    |                      ----^^^^^
[INFO] [stdout]    |                      |
[INFO] [stdout]    |                      help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch21-rexmenu/src/particle_system.rs:62:22
[INFO] [stdout]    |
[INFO] [stdout] 62 |         for (entity, mut particle) in (&entities, &mut particles).join() {
[INFO] [stdout]    |                      ----^^^^^^^^
[INFO] [stdout]    |                      |
[INFO] [stdout]    |                      help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch09-items/src/monster_ai_system.rs:40:22
[INFO] [stdout]    |
[INFO] [stdout] 40 |         for (entity, mut viewshed, _monster, mut pos) in
[INFO] [stdout]    |                      ----^^^^^^^^
[INFO] [stdout]    |                      |
[INFO] [stdout]    |                      help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch09-items/src/monster_ai_system.rs:40:46
[INFO] [stdout]    |
[INFO] [stdout] 40 |         for (entity, mut viewshed, _monster, mut pos) in
[INFO] [stdout]    |                                              ----^^^
[INFO] [stdout]    |                                              |
[INFO] [stdout]    |                                              help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch18-particles/src/monster_ai_system.rs:44:22
[INFO] [stdout]    |
[INFO] [stdout] 44 |         for (entity, mut viewshed, _monster, mut pos) in
[INFO] [stdout]    |                      ----^^^^^^^^
[INFO] [stdout]    |                      |
[INFO] [stdout]    |                      help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch18-particles/src/monster_ai_system.rs:44:46
[INFO] [stdout]    |
[INFO] [stdout] 44 |         for (entity, mut viewshed, _monster, mut pos) in
[INFO] [stdout]    |                                              ----^^^
[INFO] [stdout]    |                                              |
[INFO] [stdout]    |                                              help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch19-food/src/monster_ai_system.rs:44:22
[INFO] [stdout]    |
[INFO] [stdout] 44 |         for (entity, mut viewshed, _monster, mut pos) in
[INFO] [stdout]    |                      ----^^^^^^^^
[INFO] [stdout]    |                      |
[INFO] [stdout]    |                      help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch19-food/src/monster_ai_system.rs:44:46
[INFO] [stdout]    |
[INFO] [stdout] 44 |         for (entity, mut viewshed, _monster, mut pos) in
[INFO] [stdout]    |                                              ----^^^
[INFO] [stdout]    |                                              |
[INFO] [stdout]    |                                              help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch18-particles/src/damage_system.rs:20:22
[INFO] [stdout]    |
[INFO] [stdout] 20 |         for (entity, mut stats, damage) in (&entities, &mut stats, &damage).join() {
[INFO] [stdout]    |                      ----^^^^^
[INFO] [stdout]    |                      |
[INFO] [stdout]    |                      help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch19-food/src/damage_system.rs:20:22
[INFO] [stdout]    |
[INFO] [stdout] 20 |         for (entity, mut stats, damage) in (&entities, &mut stats, &damage).join() {
[INFO] [stdout]    |                      ----^^^^^
[INFO] [stdout]    |                      |
[INFO] [stdout]    |                      help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch13-difficulty/src/monster_ai_system.rs:42:22
[INFO] [stdout]    |
[INFO] [stdout] 42 |         for (entity, mut viewshed, _monster, mut pos) in
[INFO] [stdout]    |                      ----^^^^^^^^
[INFO] [stdout]    |                      |
[INFO] [stdout]    |                      help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch13-difficulty/src/monster_ai_system.rs:42:46
[INFO] [stdout]    |
[INFO] [stdout] 42 |         for (entity, mut viewshed, _monster, mut pos) in
[INFO] [stdout]    |                                              ----^^^
[INFO] [stdout]    |                                              |
[INFO] [stdout]    |                                              help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch13-difficulty/src/damage_system.rs:18:14
[INFO] [stdout]    |
[INFO] [stdout] 18 |         for (mut stats, damage) in (&mut stats, &damage).join() {
[INFO] [stdout]    |              ----^^^^^
[INFO] [stdout]    |              |
[INFO] [stdout]    |              help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch18-particles/src/monster_ai_system.rs:44:22
[INFO] [stdout]    |
[INFO] [stdout] 44 |         for (entity, mut viewshed, _monster, mut pos) in
[INFO] [stdout]    |                      ----^^^^^^^^
[INFO] [stdout]    |                      |
[INFO] [stdout]    |                      help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch18-particles/src/monster_ai_system.rs:44:46
[INFO] [stdout]    |
[INFO] [stdout] 44 |         for (entity, mut viewshed, _monster, mut pos) in
[INFO] [stdout]    |                                              ----^^^
[INFO] [stdout]    |                                              |
[INFO] [stdout]    |                                              help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch20-magicmapping/src/monster_ai_system.rs:44:22
[INFO] [stdout]    |
[INFO] [stdout] 44 |         for (entity, mut viewshed, _monster, mut pos) in
[INFO] [stdout]    |                      ----^^^^^^^^
[INFO] [stdout]    |                      |
[INFO] [stdout]    |                      help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch20-magicmapping/src/monster_ai_system.rs:44:46
[INFO] [stdout]    |
[INFO] [stdout] 44 |         for (entity, mut viewshed, _monster, mut pos) in
[INFO] [stdout]    |                                              ----^^^
[INFO] [stdout]    |                                              |
[INFO] [stdout]    |                                              help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch18-particles/src/damage_system.rs:20:22
[INFO] [stdout]    |
[INFO] [stdout] 20 |         for (entity, mut stats, damage) in (&entities, &mut stats, &damage).join() {
[INFO] [stdout]    |                      ----^^^^^
[INFO] [stdout]    |                      |
[INFO] [stdout]    |                      help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch18-particles/src/particle_system.rs:62:22
[INFO] [stdout]    |
[INFO] [stdout] 62 |         for (entity, mut particle) in (&entities, &mut particles).join() {
[INFO] [stdout]    |                      ----^^^^^^^^
[INFO] [stdout]    |                      |
[INFO] [stdout]    |                      help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch20-magicmapping/src/damage_system.rs:20:22
[INFO] [stdout]    |
[INFO] [stdout] 20 |         for (entity, mut stats, damage) in (&entities, &mut stats, &damage).join() {
[INFO] [stdout]    |                      ----^^^^^
[INFO] [stdout]    |                      |
[INFO] [stdout]    |                      help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch19-food/src/hunger_system.rs:20:22
[INFO] [stdout]    |
[INFO] [stdout] 20 |         for (entity, mut clock) in (&entities, &mut hunger_clock).join() {
[INFO] [stdout]    |                      ----^^^^^
[INFO] [stdout]    |                      |
[INFO] [stdout]    |                      help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch19-food/src/particle_system.rs:62:22
[INFO] [stdout]    |
[INFO] [stdout] 62 |         for (entity, mut particle) in (&entities, &mut particles).join() {
[INFO] [stdout]    |                      ----^^^^^^^^
[INFO] [stdout]    |                      |
[INFO] [stdout]    |                      help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch20-magicmapping/src/monster_ai_system.rs:44:22
[INFO] [stdout]    |
[INFO] [stdout] 44 |         for (entity, mut viewshed, _monster, mut pos) in
[INFO] [stdout]    |                      ----^^^^^^^^
[INFO] [stdout]    |                      |
[INFO] [stdout]    |                      help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch20-magicmapping/src/monster_ai_system.rs:44:46
[INFO] [stdout]    |
[INFO] [stdout] 44 |         for (entity, mut viewshed, _monster, mut pos) in
[INFO] [stdout]    |                                              ----^^^
[INFO] [stdout]    |                                              |
[INFO] [stdout]    |                                              help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch18-particles/src/particle_system.rs:62:22
[INFO] [stdout]    |
[INFO] [stdout] 62 |         for (entity, mut particle) in (&entities, &mut particles).join() {
[INFO] [stdout]    |                      ----^^^^^^^^
[INFO] [stdout]    |                      |
[INFO] [stdout]    |                      help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch20-magicmapping/src/damage_system.rs:20:22
[INFO] [stdout]    |
[INFO] [stdout] 20 |         for (entity, mut stats, damage) in (&entities, &mut stats, &damage).join() {
[INFO] [stdout]    |                      ----^^^^^
[INFO] [stdout]    |                      |
[INFO] [stdout]    |                      help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch20-magicmapping/src/hunger_system.rs:20:22
[INFO] [stdout]    |
[INFO] [stdout] 20 |         for (entity, mut clock) in (&entities, &mut hunger_clock).join() {
[INFO] [stdout]    |                      ----^^^^^
[INFO] [stdout]    |                      |
[INFO] [stdout]    |                      help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch20-magicmapping/src/particle_system.rs:62:22
[INFO] [stdout]    |
[INFO] [stdout] 62 |         for (entity, mut particle) in (&entities, &mut particles).join() {
[INFO] [stdout]    |                      ----^^^^^^^^
[INFO] [stdout]    |                      |
[INFO] [stdout]    |                      help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch20-magicmapping/src/hunger_system.rs:20:22
[INFO] [stdout]    |
[INFO] [stdout] 20 |         for (entity, mut clock) in (&entities, &mut hunger_clock).join() {
[INFO] [stdout]    |                      ----^^^^^
[INFO] [stdout]    |                      |
[INFO] [stdout]    |                      help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch20-magicmapping/src/particle_system.rs:62:22
[INFO] [stdout]    |
[INFO] [stdout] 62 |         for (entity, mut particle) in (&entities, &mut particles).join() {
[INFO] [stdout]    |                      ----^^^^^^^^
[INFO] [stdout]    |                      |
[INFO] [stdout]    |                      help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch21-rexmenu/src/monster_ai_system.rs:44:22
[INFO] [stdout]    |
[INFO] [stdout] 44 |         for (entity, mut viewshed, _monster, mut pos) in
[INFO] [stdout]    |                      ----^^^^^^^^
[INFO] [stdout]    |                      |
[INFO] [stdout]    |                      help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch21-rexmenu/src/monster_ai_system.rs:44:46
[INFO] [stdout]    |
[INFO] [stdout] 44 |         for (entity, mut viewshed, _monster, mut pos) in
[INFO] [stdout]    |                                              ----^^^
[INFO] [stdout]    |                                              |
[INFO] [stdout]    |                                              help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch21-rexmenu/src/damage_system.rs:20:22
[INFO] [stdout]    |
[INFO] [stdout] 20 |         for (entity, mut stats, damage) in (&entities, &mut stats, &damage).join() {
[INFO] [stdout]    |                      ----^^^^^
[INFO] [stdout]    |                      |
[INFO] [stdout]    |                      help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch17-blood/src/monster_ai_system.rs:42:22
[INFO] [stdout]    |
[INFO] [stdout] 42 |         for (entity, mut viewshed, _monster, mut pos) in
[INFO] [stdout]    |                      ----^^^^^^^^
[INFO] [stdout]    |                      |
[INFO] [stdout]    |                      help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch17-blood/src/monster_ai_system.rs:42:46
[INFO] [stdout]    |
[INFO] [stdout] 42 |         for (entity, mut viewshed, _monster, mut pos) in
[INFO] [stdout]    |                                              ----^^^
[INFO] [stdout]    |                                              |
[INFO] [stdout]    |                                              help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch17-blood/src/damage_system.rs:20:22
[INFO] [stdout]    |
[INFO] [stdout] 20 |         for (entity, mut stats, damage) in (&entities, &mut stats, &damage).join() {
[INFO] [stdout]    |                      ----^^^^^
[INFO] [stdout]    |                      |
[INFO] [stdout]    |                      help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch21-rexmenu/src/hunger_system.rs:20:22
[INFO] [stdout]    |
[INFO] [stdout] 20 |         for (entity, mut clock) in (&entities, &mut hunger_clock).join() {
[INFO] [stdout]    |                      ----^^^^^
[INFO] [stdout]    |                      |
[INFO] [stdout]    |                      help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch21-rexmenu/src/particle_system.rs:62:22
[INFO] [stdout]    |
[INFO] [stdout] 62 |         for (entity, mut particle) in (&entities, &mut particles).join() {
[INFO] [stdout]    |                      ----^^^^^^^^
[INFO] [stdout]    |                      |
[INFO] [stdout]    |                      help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch16-nicewalls/src/monster_ai_system.rs:42:22
[INFO] [stdout]    |
[INFO] [stdout] 42 |         for (entity, mut viewshed, _monster, mut pos) in
[INFO] [stdout]    |                      ----^^^^^^^^
[INFO] [stdout]    |                      |
[INFO] [stdout]    |                      help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch16-nicewalls/src/monster_ai_system.rs:42:46
[INFO] [stdout]    |
[INFO] [stdout] 42 |         for (entity, mut viewshed, _monster, mut pos) in
[INFO] [stdout]    |                                              ----^^^
[INFO] [stdout]    |                                              |
[INFO] [stdout]    |                                              help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch16-nicewalls/src/damage_system.rs:17:14
[INFO] [stdout]    |
[INFO] [stdout] 17 |         for (mut stats, damage) in (&mut stats, &damage).join() {
[INFO] [stdout]    |              ----^^^^^
[INFO] [stdout]    |              |
[INFO] [stdout]    |              help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch16-nicewalls/src/monster_ai_system.rs:42:22
[INFO] [stdout]    |
[INFO] [stdout] 42 |         for (entity, mut viewshed, _monster, mut pos) in
[INFO] [stdout]    |                      ----^^^^^^^^
[INFO] [stdout]    |                      |
[INFO] [stdout]    |                      help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch16-nicewalls/src/monster_ai_system.rs:42:46
[INFO] [stdout]    |
[INFO] [stdout] 42 |         for (entity, mut viewshed, _monster, mut pos) in
[INFO] [stdout]    |                                              ----^^^
[INFO] [stdout]    |                                              |
[INFO] [stdout]    |                                              help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch16-nicewalls/src/damage_system.rs:17:14
[INFO] [stdout]    |
[INFO] [stdout] 17 |         for (mut stats, damage) in (&mut stats, &damage).join() {
[INFO] [stdout]    |              ----^^^^^
[INFO] [stdout]    |              |
[INFO] [stdout]    |              help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch12-delvingdeeper/src/monster_ai_system.rs:42:22
[INFO] [stdout]    |
[INFO] [stdout] 42 |         for (entity, mut viewshed, _monster, mut pos) in
[INFO] [stdout]    |                      ----^^^^^^^^
[INFO] [stdout]    |                      |
[INFO] [stdout]    |                      help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch12-delvingdeeper/src/monster_ai_system.rs:42:46
[INFO] [stdout]    |
[INFO] [stdout] 42 |         for (entity, mut viewshed, _monster, mut pos) in
[INFO] [stdout]    |                                              ----^^^
[INFO] [stdout]    |                                              |
[INFO] [stdout]    |                                              help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch12-delvingdeeper/src/damage_system.rs:18:14
[INFO] [stdout]    |
[INFO] [stdout] 18 |         for (mut stats, damage) in (&mut stats, &damage).join() {
[INFO] [stdout]    |              ----^^^^^
[INFO] [stdout]    |              |
[INFO] [stdout]    |              help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch19-food/src/monster_ai_system.rs:44:22
[INFO] [stdout]    |
[INFO] [stdout] 44 |         for (entity, mut viewshed, _monster, mut pos) in
[INFO] [stdout]    |                      ----^^^^^^^^
[INFO] [stdout]    |                      |
[INFO] [stdout]    |                      help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch19-food/src/monster_ai_system.rs:44:46
[INFO] [stdout]    |
[INFO] [stdout] 44 |         for (entity, mut viewshed, _monster, mut pos) in
[INFO] [stdout]    |                                              ----^^^
[INFO] [stdout]    |                                              |
[INFO] [stdout]    |                                              help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch19-food/src/damage_system.rs:20:22
[INFO] [stdout]    |
[INFO] [stdout] 20 |         for (entity, mut stats, damage) in (&entities, &mut stats, &damage).join() {
[INFO] [stdout]    |                      ----^^^^^
[INFO] [stdout]    |                      |
[INFO] [stdout]    |                      help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch19-food/src/hunger_system.rs:20:22
[INFO] [stdout]    |
[INFO] [stdout] 20 |         for (entity, mut clock) in (&entities, &mut hunger_clock).join() {
[INFO] [stdout]    |                      ----^^^^^
[INFO] [stdout]    |                      |
[INFO] [stdout]    |                      help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch19-food/src/particle_system.rs:62:22
[INFO] [stdout]    |
[INFO] [stdout] 62 |         for (entity, mut particle) in (&entities, &mut particles).join() {
[INFO] [stdout]    |                      ----^^^^^^^^
[INFO] [stdout]    |                      |
[INFO] [stdout]    |                      help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch17-blood/src/monster_ai_system.rs:42:22
[INFO] [stdout]    |
[INFO] [stdout] 42 |         for (entity, mut viewshed, _monster, mut pos) in
[INFO] [stdout]    |                      ----^^^^^^^^
[INFO] [stdout]    |                      |
[INFO] [stdout]    |                      help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch17-blood/src/monster_ai_system.rs:42:46
[INFO] [stdout]    |
[INFO] [stdout] 42 |         for (entity, mut viewshed, _monster, mut pos) in
[INFO] [stdout]    |                                              ----^^^
[INFO] [stdout]    |                                              |
[INFO] [stdout]    |                                              help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch17-blood/src/damage_system.rs:20:22
[INFO] [stdout]    |
[INFO] [stdout] 20 |         for (entity, mut stats, damage) in (&entities, &mut stats, &damage).join() {
[INFO] [stdout]    |                      ----^^^^^
[INFO] [stdout]    |                      |
[INFO] [stdout]    |                      help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch11-loadsave/src/monster_ai_system.rs:42:22
[INFO] [stdout]    |
[INFO] [stdout] 42 |         for (entity, mut viewshed, _monster, mut pos) in
[INFO] [stdout]    |                      ----^^^^^^^^
[INFO] [stdout]    |                      |
[INFO] [stdout]    |                      help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch11-loadsave/src/monster_ai_system.rs:42:46
[INFO] [stdout]    |
[INFO] [stdout] 42 |         for (entity, mut viewshed, _monster, mut pos) in
[INFO] [stdout]    |                                              ----^^^
[INFO] [stdout]    |                                              |
[INFO] [stdout]    |                                              help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> ch11-loadsave/src/damage_system.rs:18:14
[INFO] [stdout]    |
[INFO] [stdout] 18 |         for (mut stats, damage) in (&mut stats, &damage).join() {
[INFO] [stdout]    |              ----^^^^^
[INFO] [stdout]    |              |
[INFO] [stdout]    |              help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 20s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: nom v5.1.2, nom v6.1.2
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 4`
[INFO] running `Command { std: "docker" "inspect" "3860d14298be09c3862737ae0fb17d00a0634f75d7531b86c23b18e799c2dce1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3860d14298be09c3862737ae0fb17d00a0634f75d7531b86c23b18e799c2dce1", kill_on_drop: false }`
[INFO] [stdout] 3860d14298be09c3862737ae0fb17d00a0634f75d7531b86c23b18e799c2dce1
