Dec 19 11:56:30.254 INFO checking neosam/textgame against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 11:56:30.254 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-5/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/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" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 11:56:30.492 INFO [stdout] 68e5acdc98faeda33aa4b2e17c0f80d7acdfe01ba5d3d2f6bf6644b03c7e4102
Dec 19 11:56:30.553 INFO running `"docker" "start" "-a" "68e5acdc98faeda33aa4b2e17c0f80d7acdfe01ba5d3d2f6bf6644b03c7e4102"`
Dec 19 11:56:31.166 INFO [stderr]    Compiling quote v0.3.10
Dec 19 11:56:31.166 INFO [stderr]     Checking serde v0.8.19
Dec 19 11:56:31.876 INFO [stderr]    Compiling syn v0.10.3
Dec 19 11:56:36.500 INFO [stderr]    Compiling serde_codegen_internals v0.11.1
Dec 19 11:56:38.146 INFO [stderr]    Compiling serde_codegen v0.8.19
Dec 19 11:56:38.761 INFO [stderr]     Checking serde_json v0.8.4
Dec 19 11:56:41.246 INFO [stderr]    Compiling serde_derive v0.8.19
Dec 19 11:56:42.198 INFO [stderr]     Checking textgametest v0.1.0 (/opt/crater/workdir)
Dec 19 11:56:42.466 INFO [stderr] warning: unnecessary parentheses around function argument
Dec 19 11:56:42.466 INFO [stderr]   --> src/terminal.rs:59:23
Dec 19 11:56:42.466 INFO [stderr]    |
Dec 19 11:56:42.466 INFO [stderr] 59 |             return Ok((false))
Dec 19 11:56:42.466 INFO [stderr]    |                       ^^^^^^^ help: remove these parentheses
Dec 19 11:56:42.466 INFO [stderr]    |
Dec 19 11:56:42.466 INFO [stderr]    = note: #[warn(unused_parens)] on by default
Dec 19 11:56:42.466 INFO [stderr] 
Dec 19 11:56:42.490 INFO [stderr] warning: unnecessary parentheses around function argument
Dec 19 11:56:42.490 INFO [stderr]   --> src/terminal.rs:59:23
Dec 19 11:56:42.490 INFO [stderr]    |
Dec 19 11:56:42.491 INFO [stderr] 59 |             return Ok((false))
Dec 19 11:56:42.491 INFO [stderr]    |                       ^^^^^^^ help: remove these parentheses
Dec 19 11:56:42.491 INFO [stderr]    |
Dec 19 11:56:42.491 INFO [stderr]    = note: #[warn(unused_parens)] on by default
Dec 19 11:56:42.491 INFO [stderr] 
Dec 19 11:56:42.820 INFO [stderr] warning: variable does not need to be mutable
Dec 19 11:56:42.820 INFO [stderr]   --> src/main.rs:30:13
Dec 19 11:56:42.820 INFO [stderr]    |
Dec 19 11:56:42.820 INFO [stderr] 30 |         let mut game_room = game.room_mut(room_ref);
Dec 19 11:56:42.820 INFO [stderr]    |             ----^^^^^^^^^
Dec 19 11:56:42.820 INFO [stderr]    |             |
Dec 19 11:56:42.820 INFO [stderr]    |             help: remove this `mut`
Dec 19 11:56:42.820 INFO [stderr]    |
Dec 19 11:56:42.820 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 19 11:56:42.820 INFO [stderr] 
Dec 19 11:56:42.944 INFO [stderr] warning: variable does not need to be mutable
Dec 19 11:56:42.944 INFO [stderr]   --> src/main.rs:30:13
Dec 19 11:56:42.944 INFO [stderr]    |
Dec 19 11:56:42.944 INFO [stderr] 30 |         let mut game_room = game.room_mut(room_ref);
Dec 19 11:56:42.944 INFO [stderr]    |             ----^^^^^^^^^
Dec 19 11:56:42.944 INFO [stderr]    |             |
Dec 19 11:56:42.944 INFO [stderr]    |             help: remove this `mut`
Dec 19 11:56:42.944 INFO [stderr]    |
Dec 19 11:56:42.944 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 19 11:56:42.944 INFO [stderr] 
Dec 19 11:56:42.968 INFO [stderr] warning: variable does not need to be mutable
Dec 19 11:56:42.968 INFO [stderr]   --> src/game.rs:54:13
Dec 19 11:56:42.968 INFO [stderr]    |
Dec 19 11:56:42.968 INFO [stderr] 54 |         let mut to_room = self.room_mut(to_room_key);
Dec 19 11:56:42.968 INFO [stderr]    |             ----^^^^^^^
Dec 19 11:56:42.968 INFO [stderr]    |             |
Dec 19 11:56:42.968 INFO [stderr]    |             help: remove this `mut`
Dec 19 11:56:42.968 INFO [stderr] 
Dec 19 11:56:42.987 INFO [stderr] warning: variable does not need to be mutable
Dec 19 11:56:42.987 INFO [stderr]    --> src/terminal.rs:114:15
Dec 19 11:56:42.987 INFO [stderr]     |
Dec 19 11:56:42.987 INFO [stderr] 114 |     Box::new(|mut game| {
Dec 19 11:56:42.987 INFO [stderr]     |               ----^^^^
Dec 19 11:56:42.987 INFO [stderr]     |               |
Dec 19 11:56:42.987 INFO [stderr]     |               help: remove this `mut`
Dec 19 11:56:42.987 INFO [stderr] 
Dec 19 11:56:42.988 INFO [stderr] warning: variable does not need to be mutable
Dec 19 11:56:42.989 INFO [stderr]    --> src/terminal.rs:126:15
Dec 19 11:56:42.989 INFO [stderr]     |
Dec 19 11:56:42.989 INFO [stderr] 126 |     Box::new(|mut game| {
Dec 19 11:56:42.989 INFO [stderr]     |               ----^^^^
Dec 19 11:56:42.989 INFO [stderr]     |               |
Dec 19 11:56:42.989 INFO [stderr]     |               help: remove this `mut`
Dec 19 11:56:42.989 INFO [stderr] 
Dec 19 11:56:42.991 INFO [stderr] warning: variable does not need to be mutable
Dec 19 11:56:42.991 INFO [stderr]    --> src/terminal.rs:134:15
Dec 19 11:56:42.991 INFO [stderr]     |
Dec 19 11:56:42.991 INFO [stderr] 134 |     Box::new(|mut game| {
Dec 19 11:56:42.991 INFO [stderr]     |               ----^^^^
Dec 19 11:56:42.991 INFO [stderr]     |               |
Dec 19 11:56:42.991 INFO [stderr]     |               help: remove this `mut`
Dec 19 11:56:42.991 INFO [stderr] 
Dec 19 11:56:42.992 INFO [stderr] warning: variable does not need to be mutable
Dec 19 11:56:42.992 INFO [stderr]    --> src/terminal.rs:150:15
Dec 19 11:56:42.992 INFO [stderr]     |
Dec 19 11:56:42.992 INFO [stderr] 150 |     Box::new(|mut game| {
Dec 19 11:56:42.993 INFO [stderr]     |               ----^^^^
Dec 19 11:56:42.993 INFO [stderr]     |               |
Dec 19 11:56:42.993 INFO [stderr]     |               help: remove this `mut`
Dec 19 11:56:42.993 INFO [stderr] 
Dec 19 11:56:42.994 INFO [stderr] warning: variable does not need to be mutable
Dec 19 11:56:42.994 INFO [stderr]    --> src/terminal.rs:161:15
Dec 19 11:56:42.994 INFO [stderr]     |
Dec 19 11:56:42.994 INFO [stderr] 161 |     Box::new(|mut game| {
Dec 19 11:56:42.994 INFO [stderr]     |               ----^^^^
Dec 19 11:56:42.994 INFO [stderr]     |               |
Dec 19 11:56:42.994 INFO [stderr]     |               help: remove this `mut`
Dec 19 11:56:42.994 INFO [stderr] 
Dec 19 11:56:42.997 INFO [stderr] warning: variable does not need to be mutable
Dec 19 11:56:42.997 INFO [stderr]    --> src/terminal.rs:173:15
Dec 19 11:56:42.997 INFO [stderr]     |
Dec 19 11:56:42.997 INFO [stderr] 173 |     Box::new(|mut game| {
Dec 19 11:56:42.997 INFO [stderr]     |               ----^^^^
Dec 19 11:56:42.997 INFO [stderr]     |               |
Dec 19 11:56:42.997 INFO [stderr]     |               help: remove this `mut`
Dec 19 11:56:42.997 INFO [stderr] 
Dec 19 11:56:42.997 INFO [stderr] warning: variable does not need to be mutable
Dec 19 11:56:42.997 INFO [stderr]    --> src/terminal.rs:176:13
Dec 19 11:56:42.997 INFO [stderr]     |
Dec 19 11:56:42.997 INFO [stderr] 176 |         let mut room = game.player_room_mut();
Dec 19 11:56:42.997 INFO [stderr]     |             ----^^^^
Dec 19 11:56:42.997 INFO [stderr]     |             |
Dec 19 11:56:42.997 INFO [stderr]     |             help: remove this `mut`
Dec 19 11:56:42.997 INFO [stderr] 
Dec 19 11:56:42.999 INFO [stderr] warning: variable does not need to be mutable
Dec 19 11:56:42.999 INFO [stderr]    --> src/terminal.rs:190:15
Dec 19 11:56:42.999 INFO [stderr]     |
Dec 19 11:56:42.999 INFO [stderr] 190 |     Box::new(|mut game| {
Dec 19 11:56:42.999 INFO [stderr]     |               ----^^^^
Dec 19 11:56:42.999 INFO [stderr]     |               |
Dec 19 11:56:42.999 INFO [stderr]     |               help: remove this `mut`
Dec 19 11:56:42.999 INFO [stderr] 
Dec 19 11:56:42.999 INFO [stderr] warning: variable does not need to be mutable
Dec 19 11:56:42.999 INFO [stderr]    --> src/terminal.rs:196:13
Dec 19 11:56:42.999 INFO [stderr]     |
Dec 19 11:56:42.999 INFO [stderr] 196 |         let mut room = game.player_room_mut();
Dec 19 11:56:42.999 INFO [stderr]     |             ----^^^^
Dec 19 11:56:42.999 INFO [stderr]     |             |
Dec 19 11:56:42.999 INFO [stderr]     |             help: remove this `mut`
Dec 19 11:56:42.999 INFO [stderr] 
Dec 19 11:56:43.027 INFO [stderr] warning: type alias is never used: `GameResult`
Dec 19 11:56:43.027 INFO [stderr]   --> src/gameerror.rs:25:1
Dec 19 11:56:43.027 INFO [stderr]    |
Dec 19 11:56:43.027 INFO [stderr] 25 | type GameResult<T> = result::Result<T, GameError>;
Dec 19 11:56:43.027 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 11:56:43.027 INFO [stderr]    |
Dec 19 11:56:43.027 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 19 11:56:43.027 INFO [stderr] 
Dec 19 11:56:43.027 INFO [stderr] warning: the feature `proc_macro` has been stable since 1.29.0 and no longer requires an attribute to enable
Dec 19 11:56:43.027 INFO [stderr]  --> src/main.rs:1:12
Dec 19 11:56:43.027 INFO [stderr]   |
Dec 19 11:56:43.027 INFO [stderr] 1 | #![feature(proc_macro)]
Dec 19 11:56:43.027 INFO [stderr]   |            ^^^^^^^^^^
Dec 19 11:56:43.027 INFO [stderr]   |
Dec 19 11:56:43.027 INFO [stderr]   = note: #[warn(stable_features)] on by default
Dec 19 11:56:43.027 INFO [stderr] 
Dec 19 11:56:43.027 INFO [stderr] warning: the feature `conservative_impl_trait` has been stable since 1.26.0 and no longer requires an attribute to enable
Dec 19 11:56:43.027 INFO [stderr]  --> src/main.rs:2:12
Dec 19 11:56:43.027 INFO [stderr]   |
Dec 19 11:56:43.027 INFO [stderr] 2 | #![feature(conservative_impl_trait)]
Dec 19 11:56:43.027 INFO [stderr]   |            ^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 11:56:43.027 INFO [stderr] 
Dec 19 11:56:43.095 INFO [stderr] warning: variable does not need to be mutable
Dec 19 11:56:43.095 INFO [stderr]   --> src/game.rs:54:13
Dec 19 11:56:43.095 INFO [stderr]    |
Dec 19 11:56:43.095 INFO [stderr] 54 |         let mut to_room = self.room_mut(to_room_key);
Dec 19 11:56:43.095 INFO [stderr]    |             ----^^^^^^^
Dec 19 11:56:43.095 INFO [stderr]    |             |
Dec 19 11:56:43.095 INFO [stderr]    |             help: remove this `mut`
Dec 19 11:56:43.095 INFO [stderr] 
Dec 19 11:56:43.107 INFO [stderr] warning: variable does not need to be mutable
Dec 19 11:56:43.107 INFO [stderr]    --> src/terminal.rs:114:15
Dec 19 11:56:43.107 INFO [stderr]     |
Dec 19 11:56:43.107 INFO [stderr] 114 |     Box::new(|mut game| {
Dec 19 11:56:43.107 INFO [stderr]     |               ----^^^^
Dec 19 11:56:43.107 INFO [stderr]     |               |
Dec 19 11:56:43.107 INFO [stderr]     |               help: remove this `mut`
Dec 19 11:56:43.107 INFO [stderr] 
Dec 19 11:56:43.108 INFO [stderr] warning: variable does not need to be mutable
Dec 19 11:56:43.108 INFO [stderr]    --> src/terminal.rs:126:15
Dec 19 11:56:43.108 INFO [stderr]     |
Dec 19 11:56:43.108 INFO [stderr] 126 |     Box::new(|mut game| {
Dec 19 11:56:43.108 INFO [stderr]     |               ----^^^^
Dec 19 11:56:43.108 INFO [stderr]     |               |
Dec 19 11:56:43.108 INFO [stderr]     |               help: remove this `mut`
Dec 19 11:56:43.108 INFO [stderr] 
Dec 19 11:56:43.110 INFO [stderr] warning: variable does not need to be mutable
Dec 19 11:56:43.110 INFO [stderr]    --> src/terminal.rs:134:15
Dec 19 11:56:43.110 INFO [stderr]     |
Dec 19 11:56:43.110 INFO [stderr] 134 |     Box::new(|mut game| {
Dec 19 11:56:43.110 INFO [stderr]     |               ----^^^^
Dec 19 11:56:43.110 INFO [stderr]     |               |
Dec 19 11:56:43.110 INFO [stderr]     |               help: remove this `mut`
Dec 19 11:56:43.110 INFO [stderr] 
Dec 19 11:56:43.111 INFO [stderr] warning: variable does not need to be mutable
Dec 19 11:56:43.111 INFO [stderr]    --> src/terminal.rs:150:15
Dec 19 11:56:43.111 INFO [stderr]     |
Dec 19 11:56:43.111 INFO [stderr] 150 |     Box::new(|mut game| {
Dec 19 11:56:43.111 INFO [stderr]     |               ----^^^^
Dec 19 11:56:43.111 INFO [stderr]     |               |
Dec 19 11:56:43.111 INFO [stderr]     |               help: remove this `mut`
Dec 19 11:56:43.111 INFO [stderr] 
Dec 19 11:56:43.112 INFO [stderr] warning: variable does not need to be mutable
Dec 19 11:56:43.112 INFO [stderr]    --> src/terminal.rs:161:15
Dec 19 11:56:43.112 INFO [stderr]     |
Dec 19 11:56:43.112 INFO [stderr] 161 |     Box::new(|mut game| {
Dec 19 11:56:43.112 INFO [stderr]     |               ----^^^^
Dec 19 11:56:43.112 INFO [stderr]     |               |
Dec 19 11:56:43.112 INFO [stderr]     |               help: remove this `mut`
Dec 19 11:56:43.112 INFO [stderr] 
Dec 19 11:56:43.115 INFO [stderr] warning: variable does not need to be mutable
Dec 19 11:56:43.115 INFO [stderr]    --> src/terminal.rs:173:15
Dec 19 11:56:43.115 INFO [stderr]     |
Dec 19 11:56:43.115 INFO [stderr] 173 |     Box::new(|mut game| {
Dec 19 11:56:43.115 INFO [stderr]     |               ----^^^^
Dec 19 11:56:43.115 INFO [stderr]     |               |
Dec 19 11:56:43.115 INFO [stderr]     |               help: remove this `mut`
Dec 19 11:56:43.115 INFO [stderr] 
Dec 19 11:56:43.115 INFO [stderr] warning: variable does not need to be mutable
Dec 19 11:56:43.115 INFO [stderr]    --> src/terminal.rs:176:13
Dec 19 11:56:43.115 INFO [stderr]     |
Dec 19 11:56:43.115 INFO [stderr] 176 |         let mut room = game.player_room_mut();
Dec 19 11:56:43.115 INFO [stderr]     |             ----^^^^
Dec 19 11:56:43.115 INFO [stderr]     |             |
Dec 19 11:56:43.115 INFO [stderr]     |             help: remove this `mut`
Dec 19 11:56:43.115 INFO [stderr] 
Dec 19 11:56:43.131 INFO [stderr] warning: variable does not need to be mutable
Dec 19 11:56:43.131 INFO [stderr]    --> src/terminal.rs:190:15
Dec 19 11:56:43.131 INFO [stderr]     |
Dec 19 11:56:43.131 INFO [stderr] 190 |     Box::new(|mut game| {
Dec 19 11:56:43.131 INFO [stderr]     |               ----^^^^
Dec 19 11:56:43.131 INFO [stderr]     |               |
Dec 19 11:56:43.131 INFO [stderr]     |               help: remove this `mut`
Dec 19 11:56:43.131 INFO [stderr] 
Dec 19 11:56:43.131 INFO [stderr] warning: variable does not need to be mutable
Dec 19 11:56:43.131 INFO [stderr]    --> src/terminal.rs:196:13
Dec 19 11:56:43.131 INFO [stderr]     |
Dec 19 11:56:43.131 INFO [stderr] 196 |         let mut room = game.player_room_mut();
Dec 19 11:56:43.131 INFO [stderr]     |             ----^^^^
Dec 19 11:56:43.131 INFO [stderr]     |             |
Dec 19 11:56:43.131 INFO [stderr]     |             help: remove this `mut`
Dec 19 11:56:43.132 INFO [stderr] 
Dec 19 11:56:43.132 INFO [stderr] warning: type alias is never used: `GameResult`
Dec 19 11:56:43.132 INFO [stderr]   --> src/gameerror.rs:25:1
Dec 19 11:56:43.132 INFO [stderr]    |
Dec 19 11:56:43.132 INFO [stderr] 25 | type GameResult<T> = result::Result<T, GameError>;
Dec 19 11:56:43.132 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 11:56:43.132 INFO [stderr]    |
Dec 19 11:56:43.132 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 19 11:56:43.132 INFO [stderr] 
Dec 19 11:56:43.132 INFO [stderr] warning: the feature `proc_macro` has been stable since 1.29.0 and no longer requires an attribute to enable
Dec 19 11:56:43.132 INFO [stderr]  --> src/main.rs:1:12
Dec 19 11:56:43.132 INFO [stderr]   |
Dec 19 11:56:43.132 INFO [stderr] 1 | #![feature(proc_macro)]
Dec 19 11:56:43.132 INFO [stderr]   |            ^^^^^^^^^^
Dec 19 11:56:43.132 INFO [stderr]   |
Dec 19 11:56:43.132 INFO [stderr]   = note: #[warn(stable_features)] on by default
Dec 19 11:56:43.132 INFO [stderr] 
Dec 19 11:56:43.132 INFO [stderr] warning: the feature `conservative_impl_trait` has been stable since 1.26.0 and no longer requires an attribute to enable
Dec 19 11:56:43.132 INFO [stderr]  --> src/main.rs:2:12
Dec 19 11:56:43.132 INFO [stderr]   |
Dec 19 11:56:43.132 INFO [stderr] 2 | #![feature(conservative_impl_trait)]
Dec 19 11:56:43.132 INFO [stderr]   |            ^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 11:56:43.132 INFO [stderr] 
Dec 19 11:56:43.152 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.03s
Dec 19 11:56:49.107 INFO running `"docker" "inspect" "68e5acdc98faeda33aa4b2e17c0f80d7acdfe01ba5d3d2f6bf6644b03c7e4102"`
Dec 19 11:56:49.204 INFO running `"docker" "rm" "-f" "68e5acdc98faeda33aa4b2e17c0f80d7acdfe01ba5d3d2f6bf6644b03c7e4102"`
Dec 19 11:56:49.334 INFO [stdout] 68e5acdc98faeda33aa4b2e17c0f80d7acdfe01ba5d3d2f6bf6644b03c7e4102