[INFO] updating cached repository https://github.com/cis198-2016s/hw05
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 30ebb61cb9054cc9f775aabc2c9d6811e481e2a0
[INFO] checking cis198-2016s/hw05 against try#e4dba30b9b475d8750370c4dfb49b6541990904d for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcis198-2016s%2Fhw05" "/workspace/builds/worker-7/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/cis198-2016s/hw05 on toolchain e4dba30b9b475d8750370c4dfb49b6541990904d
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/cis198-2016s/hw05
[INFO] finished tweaking git repo https://github.com/cis198-2016s/hw05
[INFO] tweaked toml for git repo https://github.com/cis198-2016s/hw05 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/cis198-2016s/hw05 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /workspace/builds/worker-7/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag.
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 994cfde78df5f5629a0a1e584d982170032884052906d30aaa210d9777376bd2
[INFO] running `"docker" "start" "-a" "994cfde78df5f5629a0a1e584d982170032884052906d30aaa210d9777376bd2"`
[INFO] [stderr]     Checking rustc-serialize v0.3.24
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking hw05 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/game/board.rs:22:32
[INFO] [stderr]    |
[INFO] [stderr] 22 |         let board_json: Json = try!(Json::from_reader(reader).map_err(|_| "Unable to create JSON reader".to_string()));
[INFO] [stderr]    |                                ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/game/board.rs:24:9
[INFO] [stderr]    |
[INFO] [stderr] 24 |         try!(board.parse_rooms(&board_json).map_err(|_| "Unable to parse rooms".to_string()));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/game/board.rs:25:9
[INFO] [stderr]    |
[INFO] [stderr] 25 |         try!(board.parse_halls(&board_json).map_err(|_| "Unable to parse halls".to_string()));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/game/board.rs:33:33
[INFO] [stderr]    |
[INFO] [stderr] 33 |         let json_rooms: &Json = try!(rooms_opt.ok_or("Unable to parse rooms".to_string()));
[INFO] [stderr]    |                                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/game/board.rs:36:33
[INFO] [stderr]    |
[INFO] [stderr] 36 |         let rooms: &Vec<Json> = try!(json_rooms.as_array().ok_or("Unable to parse name".to_string()));
[INFO] [stderr]    |                                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/game/board.rs:41:36
[INFO] [stderr]    |
[INFO] [stderr] 41 |             let json_name: &Json = try!(name_opt.ok_or("Unable to parse name".to_string()));
[INFO] [stderr]    |                                    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/game/board.rs:42:30
[INFO] [stderr]    |
[INFO] [stderr] 42 |             let name: &str = try!(json_name.as_string().ok_or("Unable to parse name".to_string()));
[INFO] [stderr]    |                              ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/game/board.rs:46:38
[INFO] [stderr]    |
[INFO] [stderr] 46 |             let json_curios: &Json = try!(curios_opt.ok_or("Unable to parse curio".to_string()));
[INFO] [stderr]    |                                      ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/game/board.rs:47:26
[INFO] [stderr]    |
[INFO] [stderr] 47 |             let n: u64 = try!(json_curios.as_u64().ok_or("Unable to parse curio".to_string()));
[INFO] [stderr]    |                          ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/game/board.rs:53:21
[INFO] [stderr]    |
[INFO] [stderr] 53 |                     try!(json_wumpus.as_boolean().ok_or("Unable to parse Wumpus".to_string()))
[INFO] [stderr]    |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/game/board.rs:68:33
[INFO] [stderr]    |
[INFO] [stderr] 68 |         let json_halls: &Json = try!(halls_opt.ok_or("Unable to parse halls".to_string()));
[INFO] [stderr]    |                                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/game/board.rs:71:33
[INFO] [stderr]    |
[INFO] [stderr] 71 |         let halls: &Vec<Json> = try!(json_halls.as_array().ok_or("Unable to parse halls".to_string()));
[INFO] [stderr]    |                                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/game/board.rs:73:33
[INFO] [stderr]    |
[INFO] [stderr] 73 |             let h: &Vec<Json> = try!(h.as_array().ok_or("Unable to parse halls".to_string()));
[INFO] [stderr]    |                                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/ui.rs:57:15
[INFO] [stderr]    |
[INFO] [stderr] 57 |     let cmd = try!(tokens.next().ok_or(Error::Parse));
[INFO] [stderr]    |               ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/ui.rs:59:20
[INFO] [stderr]    |
[INFO] [stderr] 59 |         let room = try!(tokens.next().ok_or(Error::Parse));
[INFO] [stderr]    |                    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/ui.rs:62:20
[INFO] [stderr]    |
[INFO] [stderr] 62 |         let room = try!(tokens.next().ok_or(Error::Parse));
[INFO] [stderr]    |                    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/game/board.rs:19:37
[INFO] [stderr]    |
[INFO] [stderr] 19 |     pub fn build_board(reader: &mut Read) -> Result<Board> {
[INFO] [stderr]    |                                     ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::cell::RefCell`
[INFO] [stderr]  --> src/game/room.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::cell::RefCell;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::mem`
[INFO] [stderr]  --> src/game/room.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::mem;
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/game/board.rs:22:32
[INFO] [stderr]    |
[INFO] [stderr] 22 |         let board_json: Json = try!(Json::from_reader(reader).map_err(|_| "Unable to create JSON reader".to_string()));
[INFO] [stderr]    |                                ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/game/board.rs:24:9
[INFO] [stderr]    |
[INFO] [stderr] 24 |         try!(board.parse_rooms(&board_json).map_err(|_| "Unable to parse rooms".to_string()));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/game/board.rs:25:9
[INFO] [stderr]    |
[INFO] [stderr] 25 |         try!(board.parse_halls(&board_json).map_err(|_| "Unable to parse halls".to_string()));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/game/board.rs:33:33
[INFO] [stderr]    |
[INFO] [stderr] 33 |         let json_rooms: &Json = try!(rooms_opt.ok_or("Unable to parse rooms".to_string()));
[INFO] [stderr]    |                                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/game/board.rs:36:33
[INFO] [stderr]    |
[INFO] [stderr] 36 |         let rooms: &Vec<Json> = try!(json_rooms.as_array().ok_or("Unable to parse name".to_string()));
[INFO] [stderr]    |                                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/game/board.rs:41:36
[INFO] [stderr]    |
[INFO] [stderr] 41 |             let json_name: &Json = try!(name_opt.ok_or("Unable to parse name".to_string()));
[INFO] [stderr]    |                                    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/game/board.rs:42:30
[INFO] [stderr]    |
[INFO] [stderr] 42 |             let name: &str = try!(json_name.as_string().ok_or("Unable to parse name".to_string()));
[INFO] [stderr]    |                              ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/game/board.rs:46:38
[INFO] [stderr]    |
[INFO] [stderr] 46 |             let json_curios: &Json = try!(curios_opt.ok_or("Unable to parse curio".to_string()));
[INFO] [stderr]    |                                      ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/game/board.rs:47:26
[INFO] [stderr]    |
[INFO] [stderr] 47 |             let n: u64 = try!(json_curios.as_u64().ok_or("Unable to parse curio".to_string()));
[INFO] [stderr]    |                          ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/game/board.rs:53:21
[INFO] [stderr]    |
[INFO] [stderr] 53 |                     try!(json_wumpus.as_boolean().ok_or("Unable to parse Wumpus".to_string()))
[INFO] [stderr]    |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/game/board.rs:68:33
[INFO] [stderr]    |
[INFO] [stderr] 68 |         let json_halls: &Json = try!(halls_opt.ok_or("Unable to parse halls".to_string()));
[INFO] [stderr]    |                                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/game/board.rs:71:33
[INFO] [stderr]    |
[INFO] [stderr] 71 |         let halls: &Vec<Json> = try!(json_halls.as_array().ok_or("Unable to parse halls".to_string()));
[INFO] [stderr]    |                                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/game/board.rs:73:33
[INFO] [stderr]    |
[INFO] [stderr] 73 |             let h: &Vec<Json> = try!(h.as_array().ok_or("Unable to parse halls".to_string()));
[INFO] [stderr]    |                                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/ui.rs:57:15
[INFO] [stderr]    |
[INFO] [stderr] 57 |     let cmd = try!(tokens.next().ok_or(Error::Parse));
[INFO] [stderr]    |               ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/ui.rs:59:20
[INFO] [stderr]    |
[INFO] [stderr] 59 |         let room = try!(tokens.next().ok_or(Error::Parse));
[INFO] [stderr]    |                    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/ui.rs:62:20
[INFO] [stderr]    |
[INFO] [stderr] 62 |         let room = try!(tokens.next().ok_or(Error::Parse));
[INFO] [stderr]    |                    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/game/board.rs:19:37
[INFO] [stderr]    |
[INFO] [stderr] 19 |     pub fn build_board(reader: &mut Read) -> Result<Board> {
[INFO] [stderr]    |                                     ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::cell::RefCell`
[INFO] [stderr]  --> src/game/room.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::cell::RefCell;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::mem`
[INFO] [stderr]  --> src/game/room.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::mem;
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable statement
[INFO] [stderr]   --> src/game/board.rs:81:13
[INFO] [stderr]    |
[INFO] [stderr] 78 |             unimplemented!();
[INFO] [stderr]    |             ----------------- any code following this expression is unreachable
[INFO] [stderr] ...
[INFO] [stderr] 81 |             unimplemented!();
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `name`
[INFO] [stderr]   --> src/game/board.rs:42:17
[INFO] [stderr]    |
[INFO] [stderr] 42 |             let name: &str = try!(json_name.as_string().ok_or("Unable to parse name".to_string()));
[INFO] [stderr]    |                 ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `curios`
[INFO] [stderr]   --> src/game/board.rs:48:17
[INFO] [stderr]    |
[INFO] [stderr] 48 |             let curios: Vec<Curio> = Curio::generate_n(n as usize);
[INFO] [stderr]    |                 ^^^^^^ help: if this is intentional, prefix it with an underscore: `_curios`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `wumpus`
[INFO] [stderr]   --> src/game/board.rs:51:17
[INFO] [stderr]    |
[INFO] [stderr] 51 |             let wumpus: bool = {
[INFO] [stderr]    |                 ^^^^^^ help: if this is intentional, prefix it with an underscore: `_wumpus`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `hall`
[INFO] [stderr]   --> src/game/board.rs:75:17
[INFO] [stderr]    |
[INFO] [stderr] 75 |             let mut hall = Hall::new();
[INFO] [stderr]    |                 ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_hall`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `room`
[INFO] [stderr]   --> src/game/hall.rs:18:25
[INFO] [stderr]    |
[INFO] [stderr] 18 |     pub fn other(&self, room: &Room) -> Rc<RefCell<Room>> {
[INFO] [stderr]    |                         ^^^^ help: if this is intentional, prefix it with an underscore: `_room`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `cmd`
[INFO] [stderr]   --> src/game/player.rs:62:27
[INFO] [stderr]    |
[INFO] [stderr] 62 |     pub fn act(&mut self, cmd: Command) -> Result<(), ()> {
[INFO] [stderr]    |                           ^^^ help: if this is intentional, prefix it with an underscore: `_cmd`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `room`
[INFO] [stderr]   --> src/game/player.rs:67:25
[INFO] [stderr]    |
[INFO] [stderr] 67 |     fn find_room(&self, room: String) -> Result<Rc<RefCell<Room>>, ()> {
[INFO] [stderr]    |                         ^^^^ help: if this is intentional, prefix it with an underscore: `_room`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/game/board.rs:75:17
[INFO] [stderr]    |
[INFO] [stderr] 75 |             let mut hall = Hall::new();
[INFO] [stderr]    |                 ----^^^^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable statement
[INFO] [stderr]   --> src/game/board.rs:81:13
[INFO] [stderr]    |
[INFO] [stderr] 78 |             unimplemented!();
[INFO] [stderr]    |             ----------------- any code following this expression is unreachable
[INFO] [stderr] ...
[INFO] [stderr] 81 |             unimplemented!();
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `won`
[INFO] [stderr]   --> src/game/player.rs:20:5
[INFO] [stderr]    |
[INFO] [stderr] 20 |     won: bool,
[INFO] [stderr]    |     ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `find_room`
[INFO] [stderr]   --> src/game/player.rs:67:5
[INFO] [stderr]    |
[INFO] [stderr] 67 |     fn find_room(&self, room: String) -> Result<Rc<RefCell<Room>>, ()> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `name`
[INFO] [stderr]   --> src/game/board.rs:42:17
[INFO] [stderr]    |
[INFO] [stderr] 42 |             let name: &str = try!(json_name.as_string().ok_or("Unable to parse name".to_string()));
[INFO] [stderr]    |                 ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `curios`
[INFO] [stderr]   --> src/game/board.rs:48:17
[INFO] [stderr]    |
[INFO] [stderr] 48 |             let curios: Vec<Curio> = Curio::generate_n(n as usize);
[INFO] [stderr]    |                 ^^^^^^ help: if this is intentional, prefix it with an underscore: `_curios`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `wumpus`
[INFO] [stderr]   --> src/game/board.rs:51:17
[INFO] [stderr]    |
[INFO] [stderr] 51 |             let wumpus: bool = {
[INFO] [stderr]    |                 ^^^^^^ help: if this is intentional, prefix it with an underscore: `_wumpus`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `hall`
[INFO] [stderr]   --> src/game/board.rs:75:17
[INFO] [stderr]    |
[INFO] [stderr] 75 |             let mut hall = Hall::new();
[INFO] [stderr]    |                 ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_hall`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `room`
[INFO] [stderr]   --> src/game/hall.rs:18:25
[INFO] [stderr]    |
[INFO] [stderr] 18 |     pub fn other(&self, room: &Room) -> Rc<RefCell<Room>> {
[INFO] [stderr]    |                         ^^^^ help: if this is intentional, prefix it with an underscore: `_room`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `cmd`
[INFO] [stderr]   --> src/game/player.rs:62:27
[INFO] [stderr]    |
[INFO] [stderr] 62 |     pub fn act(&mut self, cmd: Command) -> Result<(), ()> {
[INFO] [stderr]    |                           ^^^ help: if this is intentional, prefix it with an underscore: `_cmd`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `room`
[INFO] [stderr]   --> src/game/player.rs:67:25
[INFO] [stderr]    |
[INFO] [stderr] 67 |     fn find_room(&self, room: String) -> Result<Rc<RefCell<Room>>, ()> {
[INFO] [stderr]    |                         ^^^^ help: if this is intentional, prefix it with an underscore: `_room`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/game/board.rs:75:17
[INFO] [stderr]    |
[INFO] [stderr] 75 |             let mut hall = Hall::new();
[INFO] [stderr]    |                 ----^^^^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `won`
[INFO] [stderr]   --> src/game/player.rs:20:5
[INFO] [stderr]    |
[INFO] [stderr] 20 |     won: bool,
[INFO] [stderr]    |     ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `find_room`
[INFO] [stderr]   --> src/game/player.rs:67:5
[INFO] [stderr]    |
[INFO] [stderr] 67 |     fn find_room(&self, room: String) -> Result<Rc<RefCell<Room>>, ()> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 30 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 30 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.91s
[INFO] running `"docker" "inspect" "994cfde78df5f5629a0a1e584d982170032884052906d30aaa210d9777376bd2"`
[INFO] running `"docker" "rm" "-f" "994cfde78df5f5629a0a1e584d982170032884052906d30aaa210d9777376bd2"`
[INFO] [stdout] 994cfde78df5f5629a0a1e584d982170032884052906d30aaa210d9777376bd2