[INFO] updating cached repository moritayasuaki/mahj
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/moritayasuaki/mahj
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/moritayasuaki/mahj" "work/ex/pr-57745/sources/master#f613dc138b4012cf3d2eb40718fbcc7cf0a34039/gh/moritayasuaki/mahj"`
[INFO] [stderr] Cloning into 'work/ex/pr-57745/sources/master#f613dc138b4012cf3d2eb40718fbcc7cf0a34039/gh/moritayasuaki/mahj'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/moritayasuaki/mahj" "work/ex/pr-57745/sources/try#29640c57b5f92febba0e40c50cb863c9a7ede51d/gh/moritayasuaki/mahj"`
[INFO] [stderr] Cloning into 'work/ex/pr-57745/sources/try#29640c57b5f92febba0e40c50cb863c9a7ede51d/gh/moritayasuaki/mahj'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 1fedb186262eade0780773910a582e3bba62f450
[INFO] sha for GitHub repo moritayasuaki/mahj: 1fedb186262eade0780773910a582e3bba62f450
[INFO] validating manifest of moritayasuaki/mahj on toolchain master#f613dc138b4012cf3d2eb40718fbcc7cf0a34039
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+f613dc138b4012cf3d2eb40718fbcc7cf0a34039-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of moritayasuaki/mahj on toolchain try#29640c57b5f92febba0e40c50cb863c9a7ede51d
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+29640c57b5f92febba0e40c50cb863c9a7ede51d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing moritayasuaki/mahj
[INFO] finished frobbing moritayasuaki/mahj
[INFO] frobbed toml for moritayasuaki/mahj written to work/ex/pr-57745/sources/master#f613dc138b4012cf3d2eb40718fbcc7cf0a34039/gh/moritayasuaki/mahj/Cargo.toml
[INFO] started frobbing moritayasuaki/mahj
[INFO] finished frobbing moritayasuaki/mahj
[INFO] frobbed toml for moritayasuaki/mahj written to work/ex/pr-57745/sources/try#29640c57b5f92febba0e40c50cb863c9a7ede51d/gh/moritayasuaki/mahj/Cargo.toml
[INFO] crate moritayasuaki/mahj has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+f613dc138b4012cf3d2eb40718fbcc7cf0a34039-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+29640c57b5f92febba0e40c50cb863c9a7ede51d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking moritayasuaki/mahj against master#f613dc138b4012cf3d2eb40718fbcc7cf0a34039 for pr-57745
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57745/worker-2/master#f613dc138b4012cf3d2eb40718fbcc7cf0a34039:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57745/sources/master#f613dc138b4012cf3d2eb40718fbcc7cf0a34039/gh/moritayasuaki/mahj:/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" "+f613dc138b4012cf3d2eb40718fbcc7cf0a34039-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] b1a9f95702f6bd268b12070ebbaa4bf011e33db0a66e860f1ee47f1abdf214e4
[INFO] running `"docker" "start" "-a" "b1a9f95702f6bd268b12070ebbaa4bf011e33db0a66e860f1ee47f1abdf214e4"`
[INFO] [stderr]     Checking futures-await-await-macro v0.1.1
[INFO] [stderr]    Compiling syn v0.14.9
[INFO] [stderr]    Compiling synstructure v0.9.0
[INFO] [stderr]    Compiling futures-await-async-macro v0.1.4
[INFO] [stderr]    Compiling failure_derive v0.1.2
[INFO] [stderr]     Checking futures-await v0.1.1
[INFO] [stderr]     Checking failure v0.1.2
[INFO] [stderr]     Checking mahj v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std`
[INFO] [stderr]  --> src/table.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std;
[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/table.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::mem;
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std`
[INFO] [stderr]  --> src/game.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use std;
[INFO] [stderr]   |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `BufRead`
[INFO] [stderr]  --> src/game.rs:9:15
[INFO] [stderr]   |
[INFO] [stderr] 9 | use std::io::{BufRead, Write};
[INFO] [stderr]   |               ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std`
[INFO] [stderr]  --> src/table.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std;
[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/table.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::mem;
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std`
[INFO] [stderr]  --> src/game.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use std;
[INFO] [stderr]   |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `BufRead`
[INFO] [stderr]  --> src/game.rs:9:15
[INFO] [stderr]   |
[INFO] [stderr] 9 | use std::io::{BufRead, Write};
[INFO] [stderr]   |               ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `s`
[INFO] [stderr]    --> src/game.rs:241:17
[INFO] [stderr]     |
[INFO] [stderr] 241 |         let mut s = String::new();
[INFO] [stderr]     |                 ^ help: consider using `_s` instead
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `riichi`
[INFO] [stderr]    --> src/game.rs:332:37
[INFO] [stderr]     |
[INFO] [stderr] 332 |             Choice::Discard{figure, riichi} => {
[INFO] [stderr]     |                                     ^^^^^^ help: try ignoring the field: `riichi: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `riichi`
[INFO] [stderr]    --> src/game.rs:339:36
[INFO] [stderr]     |
[INFO] [stderr] 339 |             Choice::DrawAndDiscard{riichi} => {
[INFO] [stderr]     |                                    ^^^^^^ help: try ignoring the field: `riichi: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]    --> src/game.rs:352:33
[INFO] [stderr]     |
[INFO] [stderr] 352 |                 if let Some((t, i)) = self.adding_kong_extract(figure) {
[INFO] [stderr]     |                                 ^ help: consider using `_i` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `ts`
[INFO] [stderr]    --> src/game.rs:356:29
[INFO] [stderr]     |
[INFO] [stderr] 356 |                 if let Some(ts) = self.land.extract_set(Set::from_shape_figure(Shape::KONG, figure)) {
[INFO] [stderr]     |                             ^^ help: consider using `_ts` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `t`
[INFO] [stderr]    --> src/game.rs:359:29
[INFO] [stderr]     |
[INFO] [stderr] 359 |                 if let Some(t) = self.land.extract(figure) {
[INFO] [stderr]     |                             ^ help: consider using `_t` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `expose`
[INFO] [stderr]    --> src/game.rs:399:43
[INFO] [stderr]     |
[INFO] [stderr] 399 |     pub fn replace(&mut self, seat: Wind, expose: bool) -> Result<Step, failure::Error> {
[INFO] [stderr]     |                                           ^^^^^^ help: consider using `_expose` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `seat`
[INFO] [stderr]    --> src/game.rs:458:31
[INFO] [stderr]     |
[INFO] [stderr] 458 |     pub fn discard(&mut self, seat: Wind) -> Result<Step, failure::Error> {
[INFO] [stderr]     |                               ^^^^ help: consider using `_seat` instead
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/game.rs:241:13
[INFO] [stderr]     |
[INFO] [stderr] 241 |         let mut s = String::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: method is never used: `is_empty`
[INFO] [stderr]    --> src/tile.rs:188:5
[INFO] [stderr]     |
[INFO] [stderr] 188 |     pub fn is_empty(&self) -> bool {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `clear`
[INFO] [stderr]    --> src/tile.rs:194:5
[INFO] [stderr]     |
[INFO] [stderr] 194 |     pub fn clear(&mut self) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]    --> src/tile.rs:436:5
[INFO] [stderr]     |
[INFO] [stderr] 436 |     pub fn new() -> Self {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_empty`
[INFO] [stderr]    --> src/tile.rs:439:5
[INFO] [stderr]     |
[INFO] [stderr] 439 |     pub fn is_empty(&self) -> bool {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `count`
[INFO] [stderr]    --> src/tile.rs:442:5
[INFO] [stderr]     |
[INFO] [stderr] 442 |     pub fn count(&self) -> usize {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `next`
[INFO] [stderr]    --> src/tile.rs:445:5
[INFO] [stderr]     |
[INFO] [stderr] 445 |     pub fn next(&mut self) -> Option<Suit> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `SuitTiles`
[INFO] [stderr]    --> src/tile.rs:457:1
[INFO] [stderr]     |
[INFO] [stderr] 457 | pub struct SuitTiles(u64);
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `raw`
[INFO] [stderr]    --> src/tile.rs:460:5
[INFO] [stderr]     |
[INFO] [stderr] 460 |     pub fn raw(self) -> usize {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `from_raw`
[INFO] [stderr]    --> src/tile.rs:463:5
[INFO] [stderr]     |
[INFO] [stderr] 463 |     pub fn from_raw(raw: usize) -> Self {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]    --> src/tile.rs:466:5
[INFO] [stderr]     |
[INFO] [stderr] 466 |     pub fn new() -> Self {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_empty`
[INFO] [stderr]    --> src/tile.rs:469:5
[INFO] [stderr]     |
[INFO] [stderr] 469 |     pub fn is_empty(&self) -> bool {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `suit`
[INFO] [stderr]    --> src/tile.rs:472:5
[INFO] [stderr]     |
[INFO] [stderr] 472 |     pub fn suit(&self) -> Suit {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `singleton`
[INFO] [stderr]    --> src/tile.rs:475:5
[INFO] [stderr]     |
[INFO] [stderr] 475 |     pub fn singleton(tile: Tile) -> Self {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `payment`
[INFO] [stderr]   --> src/game.rs:28:5
[INFO] [stderr]    |
[INFO] [stderr] 28 |     pub fn payment(&mut self, payer: usize, receiver: usize, points: isize) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `sticks`
[INFO] [stderr]   --> src/game.rs:39:5
[INFO] [stderr]    |
[INFO] [stderr] 39 |     sticks: &'a mut Sticks,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `round`
[INFO] [stderr]   --> src/game.rs:40:5
[INFO] [stderr]    |
[INFO] [stderr] 40 |     round: Wind,
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `dice`
[INFO] [stderr]   --> src/game.rs:41:5
[INFO] [stderr]    |
[INFO] [stderr] 41 |     dice: Dice,
[INFO] [stderr]    |     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `run_match`
[INFO] [stderr]   --> src/game.rs:72:5
[INFO] [stderr]    |
[INFO] [stderr] 72 |     pub fn run_match(&mut self) -> Result<[isize; 4], failure::Error> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `run_eastmatch`
[INFO] [stderr]   --> src/game.rs:94:5
[INFO] [stderr]    |
[INFO] [stderr] 94 |     pub fn run_eastmatch(&mut self) -> Result<[isize; 4], failure::Error> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `shuffle`
[INFO] [stderr]   --> src/dice.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     pub fn shuffle(&mut self) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/game.rs:233:9
[INFO] [stderr]     |
[INFO] [stderr] 233 |         writeln!(player, "{}家 ツモ番", self.wind.show());
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/game.rs:235:13
[INFO] [stderr]     |
[INFO] [stderr] 235 |             write!(player, "{}", tile.figure().show());
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/game.rs:237:9
[INFO] [stderr]     |
[INFO] [stderr] 237 |         writeln!(player, " {}", drawn.figure().show());
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/game.rs:245:9
[INFO] [stderr]     |
[INFO] [stderr] 245 |         writeln!(player, "{}家 鳴き番", s.show());
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/game.rs:247:13
[INFO] [stderr]     |
[INFO] [stderr] 247 |             write!(player, "{}家河", o.show());
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/game.rs:249:17
[INFO] [stderr]     |
[INFO] [stderr] 249 |                 write!(player, "{}", d.tile().figure().show());
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/game.rs:251:13
[INFO] [stderr]     |
[INFO] [stderr] 251 |             writeln!(player, "");
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/game.rs:253:9
[INFO] [stderr]     |
[INFO] [stderr] 253 |         write!(player, "{}家河", s.show());
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/game.rs:255:13
[INFO] [stderr]     |
[INFO] [stderr] 255 |             write!(player, "{}", d.tile().figure().show());
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/game.rs:257:9
[INFO] [stderr]     |
[INFO] [stderr] 257 |         writeln!(player, "");
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/game.rs:260:13
[INFO] [stderr]     |
[INFO] [stderr] 260 |             write!(player, "{}", tile.figure().show());
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/game.rs:262:9
[INFO] [stderr]     |
[INFO] [stderr] 262 |         writeln!(player, "");
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `s`
[INFO] [stderr]    --> src/game.rs:241:17
[INFO] [stderr]     |
[INFO] [stderr] 241 |         let mut s = String::new();
[INFO] [stderr]     |                 ^ help: consider using `_s` instead
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `riichi`
[INFO] [stderr]    --> src/game.rs:332:37
[INFO] [stderr]     |
[INFO] [stderr] 332 |             Choice::Discard{figure, riichi} => {
[INFO] [stderr]     |                                     ^^^^^^ help: try ignoring the field: `riichi: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `riichi`
[INFO] [stderr]    --> src/game.rs:339:36
[INFO] [stderr]     |
[INFO] [stderr] 339 |             Choice::DrawAndDiscard{riichi} => {
[INFO] [stderr]     |                                    ^^^^^^ help: try ignoring the field: `riichi: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]    --> src/game.rs:352:33
[INFO] [stderr]     |
[INFO] [stderr] 352 |                 if let Some((t, i)) = self.adding_kong_extract(figure) {
[INFO] [stderr]     |                                 ^ help: consider using `_i` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `ts`
[INFO] [stderr]    --> src/game.rs:356:29
[INFO] [stderr]     |
[INFO] [stderr] 356 |                 if let Some(ts) = self.land.extract_set(Set::from_shape_figure(Shape::KONG, figure)) {
[INFO] [stderr]     |                             ^^ help: consider using `_ts` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `t`
[INFO] [stderr]    --> src/game.rs:359:29
[INFO] [stderr]     |
[INFO] [stderr] 359 |                 if let Some(t) = self.land.extract(figure) {
[INFO] [stderr]     |                             ^ help: consider using `_t` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `expose`
[INFO] [stderr]    --> src/game.rs:399:43
[INFO] [stderr]     |
[INFO] [stderr] 399 |     pub fn replace(&mut self, seat: Wind, expose: bool) -> Result<Step, failure::Error> {
[INFO] [stderr]     |                                           ^^^^^^ help: consider using `_expose` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `seat`
[INFO] [stderr]    --> src/game.rs:458:31
[INFO] [stderr]     |
[INFO] [stderr] 458 |     pub fn discard(&mut self, seat: Wind) -> Result<Step, failure::Error> {
[INFO] [stderr]     |                               ^^^^ help: consider using `_seat` instead
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/game.rs:241:13
[INFO] [stderr]     |
[INFO] [stderr] 241 |         let mut s = String::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: method is never used: `is_empty`
[INFO] [stderr]    --> src/tile.rs:188:5
[INFO] [stderr]     |
[INFO] [stderr] 188 |     pub fn is_empty(&self) -> bool {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `clear`
[INFO] [stderr]    --> src/tile.rs:194:5
[INFO] [stderr]     |
[INFO] [stderr] 194 |     pub fn clear(&mut self) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]    --> src/tile.rs:436:5
[INFO] [stderr]     |
[INFO] [stderr] 436 |     pub fn new() -> Self {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_empty`
[INFO] [stderr]    --> src/tile.rs:439:5
[INFO] [stderr]     |
[INFO] [stderr] 439 |     pub fn is_empty(&self) -> bool {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `count`
[INFO] [stderr]    --> src/tile.rs:442:5
[INFO] [stderr]     |
[INFO] [stderr] 442 |     pub fn count(&self) -> usize {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `next`
[INFO] [stderr]    --> src/tile.rs:445:5
[INFO] [stderr]     |
[INFO] [stderr] 445 |     pub fn next(&mut self) -> Option<Suit> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `SuitTiles`
[INFO] [stderr]    --> src/tile.rs:457:1
[INFO] [stderr]     |
[INFO] [stderr] 457 | pub struct SuitTiles(u64);
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `raw`
[INFO] [stderr]    --> src/tile.rs:460:5
[INFO] [stderr]     |
[INFO] [stderr] 460 |     pub fn raw(self) -> usize {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `from_raw`
[INFO] [stderr]    --> src/tile.rs:463:5
[INFO] [stderr]     |
[INFO] [stderr] 463 |     pub fn from_raw(raw: usize) -> Self {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]    --> src/tile.rs:466:5
[INFO] [stderr]     |
[INFO] [stderr] 466 |     pub fn new() -> Self {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_empty`
[INFO] [stderr]    --> src/tile.rs:469:5
[INFO] [stderr]     |
[INFO] [stderr] 469 |     pub fn is_empty(&self) -> bool {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `suit`
[INFO] [stderr]    --> src/tile.rs:472:5
[INFO] [stderr]     |
[INFO] [stderr] 472 |     pub fn suit(&self) -> Suit {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `singleton`
[INFO] [stderr]    --> src/tile.rs:475:5
[INFO] [stderr]     |
[INFO] [stderr] 475 |     pub fn singleton(tile: Tile) -> Self {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `payment`
[INFO] [stderr]   --> src/game.rs:28:5
[INFO] [stderr]    |
[INFO] [stderr] 28 |     pub fn payment(&mut self, payer: usize, receiver: usize, points: isize) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `sticks`
[INFO] [stderr]   --> src/game.rs:39:5
[INFO] [stderr]    |
[INFO] [stderr] 39 |     sticks: &'a mut Sticks,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `round`
[INFO] [stderr]   --> src/game.rs:40:5
[INFO] [stderr]    |
[INFO] [stderr] 40 |     round: Wind,
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `dice`
[INFO] [stderr]   --> src/game.rs:41:5
[INFO] [stderr]    |
[INFO] [stderr] 41 |     dice: Dice,
[INFO] [stderr]    |     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `run_match`
[INFO] [stderr]   --> src/game.rs:72:5
[INFO] [stderr]    |
[INFO] [stderr] 72 |     pub fn run_match(&mut self) -> Result<[isize; 4], failure::Error> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `run_eastmatch`
[INFO] [stderr]   --> src/game.rs:94:5
[INFO] [stderr]    |
[INFO] [stderr] 94 |     pub fn run_eastmatch(&mut self) -> Result<[isize; 4], failure::Error> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `shuffle`
[INFO] [stderr]   --> src/dice.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     pub fn shuffle(&mut self) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/game.rs:233:9
[INFO] [stderr]     |
[INFO] [stderr] 233 |         writeln!(player, "{}家 ツモ番", self.wind.show());
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/game.rs:235:13
[INFO] [stderr]     |
[INFO] [stderr] 235 |             write!(player, "{}", tile.figure().show());
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/game.rs:237:9
[INFO] [stderr]     |
[INFO] [stderr] 237 |         writeln!(player, " {}", drawn.figure().show());
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/game.rs:245:9
[INFO] [stderr]     |
[INFO] [stderr] 245 |         writeln!(player, "{}家 鳴き番", s.show());
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/game.rs:247:13
[INFO] [stderr]     |
[INFO] [stderr] 247 |             write!(player, "{}家河", o.show());
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/game.rs:249:17
[INFO] [stderr]     |
[INFO] [stderr] 249 |                 write!(player, "{}", d.tile().figure().show());
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/game.rs:251:13
[INFO] [stderr]     |
[INFO] [stderr] 251 |             writeln!(player, "");
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/game.rs:253:9
[INFO] [stderr]     |
[INFO] [stderr] 253 |         write!(player, "{}家河", s.show());
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/game.rs:255:13
[INFO] [stderr]     |
[INFO] [stderr] 255 |             write!(player, "{}", d.tile().figure().show());
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/game.rs:257:9
[INFO] [stderr]     |
[INFO] [stderr] 257 |         writeln!(player, "");
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/game.rs:260:13
[INFO] [stderr]     |
[INFO] [stderr] 260 |             write!(player, "{}", tile.figure().show());
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/game.rs:262:9
[INFO] [stderr]     |
[INFO] [stderr] 262 |         writeln!(player, "");
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 39.27s
[INFO] running `"docker" "inspect" "b1a9f95702f6bd268b12070ebbaa4bf011e33db0a66e860f1ee47f1abdf214e4"`
[INFO] running `"docker" "rm" "-f" "b1a9f95702f6bd268b12070ebbaa4bf011e33db0a66e860f1ee47f1abdf214e4"`
[INFO] [stdout] b1a9f95702f6bd268b12070ebbaa4bf011e33db0a66e860f1ee47f1abdf214e4