Dec 17 18:52:02.144 INFO checking neosam/textgame against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 17 18:52:02.144 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-7/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/gh/neosam/textgame:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+0b8c5828f68d7b2840b81fa51239346dc97fef5a-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 17 18:52:02.358 INFO [stdout] 9546d4d4c5958e18e2ef2cc8e81b11849963b8e33c15332bea00b2e53456f539
Dec 17 18:52:02.359 INFO running `"docker" "start" "-a" "9546d4d4c5958e18e2ef2cc8e81b11849963b8e33c15332bea00b2e53456f539"`
Dec 17 18:52:02.909 INFO [stderr]    Compiling unicode-xid v0.0.3
Dec 17 18:52:02.909 INFO [stderr]     Checking serde v0.8.19
Dec 17 18:52:03.197 INFO [stderr]    Compiling syn v0.10.3
Dec 17 18:52:07.792 INFO [stderr]    Compiling serde_codegen_internals v0.11.1
Dec 17 18:52:09.556 INFO [stderr]     Checking serde_json v0.8.4
Dec 17 18:52:09.629 INFO [stderr]    Compiling serde_codegen v0.8.19
Dec 17 18:52:12.680 INFO [stderr]    Compiling serde_derive v0.8.19
Dec 17 18:52:13.752 INFO [stderr]     Checking textgametest v0.1.0 (/opt/crater/workdir)
Dec 17 18:52:14.124 INFO [stderr] warning: unnecessary parentheses around function argument
Dec 17 18:52:14.125 INFO [stderr]   --> src/terminal.rs:59:23
Dec 17 18:52:14.125 INFO [stderr]    |
Dec 17 18:52:14.125 INFO [stderr] 59 |             return Ok((false))
Dec 17 18:52:14.125 INFO [stderr]    |                       ^^^^^^^ help: remove these parentheses
Dec 17 18:52:14.126 INFO [stderr]    |
Dec 17 18:52:14.126 INFO [stderr]    = note: #[warn(unused_parens)] on by default
Dec 17 18:52:14.126 INFO [stderr] 
Dec 17 18:52:14.348 INFO [stderr] warning: unnecessary parentheses around function argument
Dec 17 18:52:14.348 INFO [stderr]   --> src/terminal.rs:59:23
Dec 17 18:52:14.348 INFO [stderr]    |
Dec 17 18:52:14.348 INFO [stderr] 59 |             return Ok((false))
Dec 17 18:52:14.348 INFO [stderr]    |                       ^^^^^^^ help: remove these parentheses
Dec 17 18:52:14.348 INFO [stderr]    |
Dec 17 18:52:14.348 INFO [stderr]    = note: #[warn(unused_parens)] on by default
Dec 17 18:52:14.348 INFO [stderr] 
Dec 17 18:52:14.901 INFO [stderr] warning: variable does not need to be mutable
Dec 17 18:52:14.901 INFO [stderr]   --> src/main.rs:30:13
Dec 17 18:52:14.901 INFO [stderr]    |
Dec 17 18:52:14.901 INFO [stderr] 30 |         let mut game_room = game.room_mut(room_ref);
Dec 17 18:52:14.901 INFO [stderr]    |             ----^^^^^^^^^
Dec 17 18:52:14.901 INFO [stderr]    |             |
Dec 17 18:52:14.901 INFO [stderr]    |             help: remove this `mut`
Dec 17 18:52:14.901 INFO [stderr]    |
Dec 17 18:52:14.901 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 17 18:52:14.901 INFO [stderr] 
Dec 17 18:52:15.110 INFO [stderr] warning: variable does not need to be mutable
Dec 17 18:52:15.110 INFO [stderr]   --> src/game.rs:54:13
Dec 17 18:52:15.110 INFO [stderr]    |
Dec 17 18:52:15.110 INFO [stderr] 54 |         let mut to_room = self.room_mut(to_room_key);
Dec 17 18:52:15.111 INFO [stderr]    |             ----^^^^^^^
Dec 17 18:52:15.111 INFO [stderr]    |             |
Dec 17 18:52:15.111 INFO [stderr]    |             help: remove this `mut`
Dec 17 18:52:15.111 INFO [stderr] 
Dec 17 18:52:15.144 INFO [stderr] warning: variable does not need to be mutable
Dec 17 18:52:15.144 INFO [stderr]    --> src/terminal.rs:114:15
Dec 17 18:52:15.144 INFO [stderr]     |
Dec 17 18:52:15.144 INFO [stderr] 114 |     Box::new(|mut game| {
Dec 17 18:52:15.144 INFO [stderr]     |               ----^^^^
Dec 17 18:52:15.144 INFO [stderr]     |               |
Dec 17 18:52:15.144 INFO [stderr]     |               help: remove this `mut`
Dec 17 18:52:15.144 INFO [stderr] 
Dec 17 18:52:15.146 INFO [stderr] warning: variable does not need to be mutable
Dec 17 18:52:15.146 INFO [stderr]    --> src/terminal.rs:126:15
Dec 17 18:52:15.146 INFO [stderr]     |
Dec 17 18:52:15.146 INFO [stderr] 126 |     Box::new(|mut game| {
Dec 17 18:52:15.146 INFO [stderr]     |               ----^^^^
Dec 17 18:52:15.146 INFO [stderr]     |               |
Dec 17 18:52:15.147 INFO [stderr]     |               help: remove this `mut`
Dec 17 18:52:15.147 INFO [stderr] 
Dec 17 18:52:15.149 INFO [stderr] warning: variable does not need to be mutable
Dec 17 18:52:15.149 INFO [stderr]    --> src/terminal.rs:134:15
Dec 17 18:52:15.149 INFO [stderr]     |
Dec 17 18:52:15.150 INFO [stderr] 134 |     Box::new(|mut game| {
Dec 17 18:52:15.150 INFO [stderr]     |               ----^^^^
Dec 17 18:52:15.150 INFO [stderr]     |               |
Dec 17 18:52:15.150 INFO [stderr]     |               help: remove this `mut`
Dec 17 18:52:15.151 INFO [stderr] 
Dec 17 18:52:15.156 INFO [stderr] warning: variable does not need to be mutable
Dec 17 18:52:15.157 INFO [stderr]    --> src/terminal.rs:150:15
Dec 17 18:52:15.157 INFO [stderr]     |
Dec 17 18:52:15.157 INFO [stderr] 150 |     Box::new(|mut game| {
Dec 17 18:52:15.157 INFO [stderr]     |               ----^^^^
Dec 17 18:52:15.158 INFO [stderr]     |               |
Dec 17 18:52:15.158 INFO [stderr]     |               help: remove this `mut`
Dec 17 18:52:15.158 INFO [stderr] 
Dec 17 18:52:15.160 INFO [stderr] warning: variable does not need to be mutable
Dec 17 18:52:15.160 INFO [stderr]    --> src/terminal.rs:161:15
Dec 17 18:52:15.160 INFO [stderr]     |
Dec 17 18:52:15.160 INFO [stderr] 161 |     Box::new(|mut game| {
Dec 17 18:52:15.161 INFO [stderr]     |               ----^^^^
Dec 17 18:52:15.161 INFO [stderr]     |               |
Dec 17 18:52:15.161 INFO [stderr]     |               help: remove this `mut`
Dec 17 18:52:15.161 INFO [stderr] 
Dec 17 18:52:15.165 INFO [stderr] warning: variable does not need to be mutable
Dec 17 18:52:15.165 INFO [stderr]    --> src/terminal.rs:173:15
Dec 17 18:52:15.165 INFO [stderr]     |
Dec 17 18:52:15.166 INFO [stderr] 173 |     Box::new(|mut game| {
Dec 17 18:52:15.166 INFO [stderr]     |               ----^^^^
Dec 17 18:52:15.166 INFO [stderr]     |               |
Dec 17 18:52:15.166 INFO [stderr]     |               help: remove this `mut`
Dec 17 18:52:15.167 INFO [stderr] 
Dec 17 18:52:15.167 INFO [stderr] warning: variable does not need to be mutable
Dec 17 18:52:15.167 INFO [stderr]    --> src/terminal.rs:176:13
Dec 17 18:52:15.167 INFO [stderr]     |
Dec 17 18:52:15.168 INFO [stderr] 176 |         let mut room = game.player_room_mut();
Dec 17 18:52:15.168 INFO [stderr]     |             ----^^^^
Dec 17 18:52:15.168 INFO [stderr]     |             |
Dec 17 18:52:15.168 INFO [stderr]     |             help: remove this `mut`
Dec 17 18:52:15.169 INFO [stderr] 
Dec 17 18:52:15.171 INFO [stderr] warning: variable does not need to be mutable
Dec 17 18:52:15.171 INFO [stderr]    --> src/terminal.rs:190:15
Dec 17 18:52:15.172 INFO [stderr]     |
Dec 17 18:52:15.172 INFO [stderr] 190 |     Box::new(|mut game| {
Dec 17 18:52:15.172 INFO [stderr]     |               ----^^^^
Dec 17 18:52:15.172 INFO [stderr]     |               |
Dec 17 18:52:15.173 INFO [stderr]     |               help: remove this `mut`
Dec 17 18:52:15.173 INFO [stderr] 
Dec 17 18:52:15.173 INFO [stderr] warning: variable does not need to be mutable
Dec 17 18:52:15.173 INFO [stderr]    --> src/terminal.rs:196:13
Dec 17 18:52:15.174 INFO [stderr]     |
Dec 17 18:52:15.174 INFO [stderr] 196 |         let mut room = game.player_room_mut();
Dec 17 18:52:15.174 INFO [stderr]     |             ----^^^^
Dec 17 18:52:15.175 INFO [stderr]     |             |
Dec 17 18:52:15.175 INFO [stderr]     |             help: remove this `mut`
Dec 17 18:52:15.175 INFO [stderr] 
Dec 17 18:52:15.195 INFO [stderr] warning: type alias is never used: `GameResult`
Dec 17 18:52:15.195 INFO [stderr]   --> src/gameerror.rs:25:1
Dec 17 18:52:15.195 INFO [stderr]    |
Dec 17 18:52:15.195 INFO [stderr] 25 | type GameResult<T> = result::Result<T, GameError>;
Dec 17 18:52:15.196 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 18:52:15.196 INFO [stderr]    |
Dec 17 18:52:15.196 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 17 18:52:15.197 INFO [stderr] 
Dec 17 18:52:15.197 INFO [stderr] warning: the feature `proc_macro` has been stable since 1.29.0 and no longer requires an attribute to enable
Dec 17 18:52:15.198 INFO [stderr]  --> src/main.rs:1:12
Dec 17 18:52:15.198 INFO [stderr]   |
Dec 17 18:52:15.198 INFO [stderr] 1 | #![feature(proc_macro)]
Dec 17 18:52:15.198 INFO [stderr]   |            ^^^^^^^^^^
Dec 17 18:52:15.199 INFO [stderr]   |
Dec 17 18:52:15.199 INFO [stderr]   = note: #[warn(stable_features)] on by default
Dec 17 18:52:15.199 INFO [stderr] 
Dec 17 18:52:15.200 INFO [stderr] warning: the feature `conservative_impl_trait` has been stable since 1.26.0 and no longer requires an attribute to enable
Dec 17 18:52:15.200 INFO [stderr]  --> src/main.rs:2:12
Dec 17 18:52:15.200 INFO [stderr]   |
Dec 17 18:52:15.200 INFO [stderr] 2 | #![feature(conservative_impl_trait)]
Dec 17 18:52:15.201 INFO [stderr]   |            ^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 18:52:15.201 INFO [stderr] 
Dec 17 18:52:15.482 INFO [stderr] warning: variable does not need to be mutable
Dec 17 18:52:15.482 INFO [stderr]   --> src/main.rs:30:13
Dec 17 18:52:15.482 INFO [stderr]    |
Dec 17 18:52:15.482 INFO [stderr] 30 |         let mut game_room = game.room_mut(room_ref);
Dec 17 18:52:15.482 INFO [stderr]    |             ----^^^^^^^^^
Dec 17 18:52:15.483 INFO [stderr]    |             |
Dec 17 18:52:15.483 INFO [stderr]    |             help: remove this `mut`
Dec 17 18:52:15.483 INFO [stderr]    |
Dec 17 18:52:15.483 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 17 18:52:15.483 INFO [stderr] 
Dec 17 18:52:15.658 INFO [stderr] warning: variable does not need to be mutable
Dec 17 18:52:15.658 INFO [stderr]   --> src/game.rs:54:13
Dec 17 18:52:15.659 INFO [stderr]    |
Dec 17 18:52:15.659 INFO [stderr] 54 |         let mut to_room = self.room_mut(to_room_key);
Dec 17 18:52:15.659 INFO [stderr]    |             ----^^^^^^^
Dec 17 18:52:15.659 INFO [stderr]    |             |
Dec 17 18:52:15.660 INFO [stderr]    |             help: remove this `mut`
Dec 17 18:52:15.660 INFO [stderr] 
Dec 17 18:52:15.677 INFO [stderr] warning: variable does not need to be mutable
Dec 17 18:52:15.677 INFO [stderr]    --> src/terminal.rs:114:15
Dec 17 18:52:15.677 INFO [stderr]     |
Dec 17 18:52:15.678 INFO [stderr] 114 |     Box::new(|mut game| {
Dec 17 18:52:15.678 INFO [stderr]     |               ----^^^^
Dec 17 18:52:15.678 INFO [stderr]     |               |
Dec 17 18:52:15.678 INFO [stderr]     |               help: remove this `mut`
Dec 17 18:52:15.679 INFO [stderr] 
Dec 17 18:52:15.680 INFO [stderr] warning: variable does not need to be mutable
Dec 17 18:52:15.680 INFO [stderr]    --> src/terminal.rs:126:15
Dec 17 18:52:15.680 INFO [stderr]     |
Dec 17 18:52:15.680 INFO [stderr] 126 |     Box::new(|mut game| {
Dec 17 18:52:15.680 INFO [stderr]     |               ----^^^^
Dec 17 18:52:15.680 INFO [stderr]     |               |
Dec 17 18:52:15.680 INFO [stderr]     |               help: remove this `mut`
Dec 17 18:52:15.680 INFO [stderr] 
Dec 17 18:52:15.685 INFO [stderr] warning: variable does not need to be mutable
Dec 17 18:52:15.685 INFO [stderr]    --> src/terminal.rs:134:15
Dec 17 18:52:15.686 INFO [stderr]     |
Dec 17 18:52:15.686 INFO [stderr] 134 |     Box::new(|mut game| {
Dec 17 18:52:15.686 INFO [stderr]     |               ----^^^^
Dec 17 18:52:15.687 INFO [stderr]     |               |
Dec 17 18:52:15.687 INFO [stderr]     |               help: remove this `mut`
Dec 17 18:52:15.687 INFO [stderr] 
Dec 17 18:52:15.687 INFO [stderr] warning: variable does not need to be mutable
Dec 17 18:52:15.687 INFO [stderr]    --> src/terminal.rs:150:15
Dec 17 18:52:15.687 INFO [stderr]     |
Dec 17 18:52:15.687 INFO [stderr] 150 |     Box::new(|mut game| {
Dec 17 18:52:15.687 INFO [stderr]     |               ----^^^^
Dec 17 18:52:15.687 INFO [stderr]     |               |
Dec 17 18:52:15.687 INFO [stderr]     |               help: remove this `mut`
Dec 17 18:52:15.687 INFO [stderr] 
Dec 17 18:52:15.688 INFO [stderr] warning: variable does not need to be mutable
Dec 17 18:52:15.688 INFO [stderr]    --> src/terminal.rs:161:15
Dec 17 18:52:15.688 INFO [stderr]     |
Dec 17 18:52:15.689 INFO [stderr] 161 |     Box::new(|mut game| {
Dec 17 18:52:15.689 INFO [stderr]     |               ----^^^^
Dec 17 18:52:15.689 INFO [stderr]     |               |
Dec 17 18:52:15.696 INFO [stderr]     |               help: remove this `mut`
Dec 17 18:52:15.696 INFO [stderr] 
Dec 17 18:52:15.696 INFO [stderr] warning: variable does not need to be mutable
Dec 17 18:52:15.696 INFO [stderr]    --> src/terminal.rs:173:15
Dec 17 18:52:15.696 INFO [stderr]     |
Dec 17 18:52:15.696 INFO [stderr] 173 |     Box::new(|mut game| {
Dec 17 18:52:15.696 INFO [stderr]     |               ----^^^^
Dec 17 18:52:15.696 INFO [stderr]     |               |
Dec 17 18:52:15.696 INFO [stderr]     |               help: remove this `mut`
Dec 17 18:52:15.696 INFO [stderr] 
Dec 17 18:52:15.696 INFO [stderr] warning: variable does not need to be mutable
Dec 17 18:52:15.696 INFO [stderr]    --> src/terminal.rs:176:13
Dec 17 18:52:15.696 INFO [stderr]     |
Dec 17 18:52:15.696 INFO [stderr] 176 |         let mut room = game.player_room_mut();
Dec 17 18:52:15.696 INFO [stderr]     |             ----^^^^
Dec 17 18:52:15.696 INFO [stderr]     |             |
Dec 17 18:52:15.696 INFO [stderr]     |             help: remove this `mut`
Dec 17 18:52:15.696 INFO [stderr] 
Dec 17 18:52:15.697 INFO [stderr] warning: variable does not need to be mutable
Dec 17 18:52:15.697 INFO [stderr]    --> src/terminal.rs:190:15
Dec 17 18:52:15.697 INFO [stderr]     |
Dec 17 18:52:15.697 INFO [stderr] 190 |     Box::new(|mut game| {
Dec 17 18:52:15.697 INFO [stderr]     |               ----^^^^
Dec 17 18:52:15.697 INFO [stderr]     |               |
Dec 17 18:52:15.697 INFO [stderr]     |               help: remove this `mut`
Dec 17 18:52:15.697 INFO [stderr] 
Dec 17 18:52:15.697 INFO [stderr] warning: variable does not need to be mutable
Dec 17 18:52:15.697 INFO [stderr]    --> src/terminal.rs:196:13
Dec 17 18:52:15.697 INFO [stderr]     |
Dec 17 18:52:15.697 INFO [stderr] 196 |         let mut room = game.player_room_mut();
Dec 17 18:52:15.697 INFO [stderr]     |             ----^^^^
Dec 17 18:52:15.697 INFO [stderr]     |             |
Dec 17 18:52:15.697 INFO [stderr]     |             help: remove this `mut`
Dec 17 18:52:15.697 INFO [stderr] 
Dec 17 18:52:15.708 INFO [stderr] warning: type alias is never used: `GameResult`
Dec 17 18:52:15.708 INFO [stderr]   --> src/gameerror.rs:25:1
Dec 17 18:52:15.708 INFO [stderr]    |
Dec 17 18:52:15.708 INFO [stderr] 25 | type GameResult<T> = result::Result<T, GameError>;
Dec 17 18:52:15.708 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 18:52:15.708 INFO [stderr]    |
Dec 17 18:52:15.708 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 17 18:52:15.708 INFO [stderr] 
Dec 17 18:52:15.708 INFO [stderr] warning: the feature `proc_macro` has been stable since 1.29.0 and no longer requires an attribute to enable
Dec 17 18:52:15.708 INFO [stderr]  --> src/main.rs:1:12
Dec 17 18:52:15.708 INFO [stderr]   |
Dec 17 18:52:15.708 INFO [stderr] 1 | #![feature(proc_macro)]
Dec 17 18:52:15.708 INFO [stderr]   |            ^^^^^^^^^^
Dec 17 18:52:15.708 INFO [stderr]   |
Dec 17 18:52:15.708 INFO [stderr]   = note: #[warn(stable_features)] on by default
Dec 17 18:52:15.708 INFO [stderr] 
Dec 17 18:52:15.708 INFO [stderr] warning: the feature `conservative_impl_trait` has been stable since 1.26.0 and no longer requires an attribute to enable
Dec 17 18:52:15.708 INFO [stderr]  --> src/main.rs:2:12
Dec 17 18:52:15.708 INFO [stderr]   |
Dec 17 18:52:15.708 INFO [stderr] 2 | #![feature(conservative_impl_trait)]
Dec 17 18:52:15.708 INFO [stderr]   |            ^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 18:52:15.708 INFO [stderr] 
Dec 17 18:52:15.772 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.89s
Dec 17 18:52:34.214 INFO running `"docker" "inspect" "9546d4d4c5958e18e2ef2cc8e81b11849963b8e33c15332bea00b2e53456f539"`
Dec 17 18:52:34.295 INFO running `"docker" "rm" "-f" "9546d4d4c5958e18e2ef2cc8e81b11849963b8e33c15332bea00b2e53456f539"`
Dec 17 18:52:34.405 INFO [stdout] 9546d4d4c5958e18e2ef2cc8e81b11849963b8e33c15332bea00b2e53456f539