[INFO] cloning repository https://github.com/BlueyNeilo/mahjong-online-server
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/BlueyNeilo/mahjong-online-server" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBlueyNeilo%2Fmahjong-online-server", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBlueyNeilo%2Fmahjong-online-server'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d85aa26783fd176abdab1f8c2c01ad1c1bc0b305
[INFO] checking BlueyNeilo/mahjong-online-server against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBlueyNeilo%2Fmahjong-online-server" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/BlueyNeilo/mahjong-online-server on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/BlueyNeilo/mahjong-online-server
[INFO] finished tweaking git repo https://github.com/BlueyNeilo/mahjong-online-server
[INFO] tweaked toml for git repo https://github.com/BlueyNeilo/mahjong-online-server written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/BlueyNeilo/mahjong-online-server already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating git repository `https://github.com/carllerche/mio`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded lazycell v0.5.1
[INFO] [stderr]   Downloaded cfg-if v0.1.2
[INFO] [stderr]   Downloaded fuchsia-zircon v0.2.1
[INFO] [stderr]   Downloaded iovec v0.1.1
[INFO] [stderr]   Downloaded net2 v0.2.31
[INFO] [stderr]   Downloaded log v0.3.8
[INFO] [stderr]   Downloaded fuchsia-zircon-sys v0.2.0
[INFO] [stderr]   Downloaded libc v0.2.33
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a32329779761df7f97c6bd9a0c8ad68f53457fc4c6dbf609104419442a947704
[INFO] running `Command { std: "docker" "start" "-a" "a32329779761df7f97c6bd9a0c8ad68f53457fc4c6dbf609104419442a947704", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a32329779761df7f97c6bd9a0c8ad68f53457fc4c6dbf609104419442a947704", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a32329779761df7f97c6bd9a0c8ad68f53457fc4c6dbf609104419442a947704", kill_on_drop: false }`
[INFO] [stdout] a32329779761df7f97c6bd9a0c8ad68f53457fc4c6dbf609104419442a947704
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3dab61852cea80fa816872e523365dbfcb92c2f250c16c6364f82dd8aa822dfb
[INFO] running `Command { std: "docker" "start" "-a" "3dab61852cea80fa816872e523365dbfcb92c2f250c16c6364f82dd8aa822dfb", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.33
[INFO] [stderr]     Checking cfg-if v0.1.2
[INFO] [stderr]     Checking log v0.3.8
[INFO] [stderr]     Checking lazycell v0.5.1
[INFO] [stderr]     Checking slab v0.3.0
[INFO] [stderr]     Checking net2 v0.2.31
[INFO] [stderr]     Checking iovec v0.1.1
[INFO] [stderr]     Checking mio v0.6.11 (https://github.com/carllerche/mio#0da987e2)
[INFO] [stderr]     Checking mahjong-online-server v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `spectating` is never read
[INFO] [stdout]   --> src/main.rs:45:5
[INFO] [stdout]    |
[INFO] [stdout] 43 | struct PlayerConnection {
[INFO] [stdout]    |        ---------------- field in this struct
[INFO] [stdout] 44 |     connected: bool,
[INFO] [stdout] 45 |     spectating: bool,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `PlayerConnection` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `send` and `recieve` are never used
[INFO] [stdout]   --> src/main.rs:61:8
[INFO] [stdout]    |
[INFO] [stdout] 50 | impl PlayerConnection {
[INFO] [stdout]    | --------------------- associated functions in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 61 |     fn send() {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 64 |     fn recieve() {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Red`, `Green`, and `White` are never constructed
[INFO] [stdout]  --> src/mahjong_tiles.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | enum Dragons {
[INFO] [stdout]   |      ------- variants in this enum
[INFO] [stdout] 5 |     Red,
[INFO] [stdout]   |     ^^^
[INFO] [stdout] 6 |     Green,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 7 |     White
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `spectating` is never read
[INFO] [stdout]   --> src/main.rs:45:5
[INFO] [stdout]    |
[INFO] [stdout] 43 | struct PlayerConnection {
[INFO] [stdout]    |        ---------------- field in this struct
[INFO] [stdout] 44 |     connected: bool,
[INFO] [stdout] 45 |     spectating: bool,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `PlayerConnection` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `send` and `recieve` are never used
[INFO] [stdout]   --> src/main.rs:61:8
[INFO] [stdout]    |
[INFO] [stdout] 50 | impl PlayerConnection {
[INFO] [stdout]    | --------------------- associated functions in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 61 |     fn send() {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 64 |     fn recieve() {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Red`, `Green`, and `White` are never constructed
[INFO] [stdout]  --> src/mahjong_tiles.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | enum Dragons {
[INFO] [stdout]   |      ------- variants in this enum
[INFO] [stdout] 5 |     Red,
[INFO] [stdout]   |     ^^^
[INFO] [stdout] 6 |     Green,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 7 |     White
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `North`, `South`, `East`, and `West` are never constructed
[INFO] [stdout]   --> src/mahjong_tiles.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 9  | enum Winds {
[INFO] [stdout]    |      ----- variants in this enum
[INFO] [stdout] 10 |     North,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 11 |     South,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 12 |     East,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 13 |     West
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Dot`, `Bamboo`, and `Character` are never constructed
[INFO] [stdout]   --> src/mahjong_tiles.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | enum SimpleSuit {
[INFO] [stdout]    |      ---------- variants in this enum
[INFO] [stdout] 17 |     Dot,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 18 |     Bamboo,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 19 |     Character,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Wind` and `Dragon` are never constructed
[INFO] [stdout]   --> src/mahjong_tiles.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 22 | enum HonourSuit {
[INFO] [stdout]    |      ---------- variants in this enum
[INFO] [stdout] 23 |     Wind,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 24 |     Dragon,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Wind` and `Dragon` are never constructed
[INFO] [stdout]   --> src/mahjong_tiles.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 27 | enum HonourValue {
[INFO] [stdout]    |      ----------- variants in this enum
[INFO] [stdout] 28 |     Wind(Winds),
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 29 |     Dragon(Dragons),
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Tile` is never used
[INFO] [stdout]   --> src/mahjong_tiles.rs:34:7
[INFO] [stdout]    |
[INFO] [stdout] 34 | trait Tile {
[INFO] [stdout]    |       ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `SimpleTile` is never constructed
[INFO] [stdout]   --> src/mahjong_tiles.rs:40:8
[INFO] [stdout]    |
[INFO] [stdout] 40 | struct SimpleTile {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `HonourTile` is never constructed
[INFO] [stdout]   --> src/mahjong_tiles.rs:45:8
[INFO] [stdout]    |
[INFO] [stdout] 45 | struct HonourTile {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `FlowerTile` is never constructed
[INFO] [stdout]   --> src/mahjong_tiles.rs:50:8
[INFO] [stdout]    |
[INFO] [stdout] 50 | struct FlowerTile {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `North`, `South`, `East`, and `West` are never constructed
[INFO] [stdout]   --> src/mahjong_tiles.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 9  | enum Winds {
[INFO] [stdout]    |      ----- variants in this enum
[INFO] [stdout] 10 |     North,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 11 |     South,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 12 |     East,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 13 |     West
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Dot`, `Bamboo`, and `Character` are never constructed
[INFO] [stdout]   --> src/mahjong_tiles.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | enum SimpleSuit {
[INFO] [stdout]    |      ---------- variants in this enum
[INFO] [stdout] 17 |     Dot,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 18 |     Bamboo,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 19 |     Character,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Wind` and `Dragon` are never constructed
[INFO] [stdout]   --> src/mahjong_tiles.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 22 | enum HonourSuit {
[INFO] [stdout]    |      ---------- variants in this enum
[INFO] [stdout] 23 |     Wind,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 24 |     Dragon,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Wind` and `Dragon` are never constructed
[INFO] [stdout]   --> src/mahjong_tiles.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 27 | enum HonourValue {
[INFO] [stdout]    |      ----------- variants in this enum
[INFO] [stdout] 28 |     Wind(Winds),
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 29 |     Dragon(Dragons),
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Tile` is never used
[INFO] [stdout]   --> src/mahjong_tiles.rs:34:7
[INFO] [stdout]    |
[INFO] [stdout] 34 | trait Tile {
[INFO] [stdout]    |       ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `SimpleTile` is never constructed
[INFO] [stdout]   --> src/mahjong_tiles.rs:40:8
[INFO] [stdout]    |
[INFO] [stdout] 40 | struct SimpleTile {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `HonourTile` is never constructed
[INFO] [stdout]   --> src/mahjong_tiles.rs:45:8
[INFO] [stdout]    |
[INFO] [stdout] 45 | struct HonourTile {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `FlowerTile` is never constructed
[INFO] [stdout]   --> src/mahjong_tiles.rs:50:8
[INFO] [stdout]    |
[INFO] [stdout] 50 | struct FlowerTile {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.95s
[INFO] running `Command { std: "docker" "inspect" "3dab61852cea80fa816872e523365dbfcb92c2f250c16c6364f82dd8aa822dfb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3dab61852cea80fa816872e523365dbfcb92c2f250c16c6364f82dd8aa822dfb", kill_on_drop: false }`
[INFO] [stdout] 3dab61852cea80fa816872e523365dbfcb92c2f250c16c6364f82dd8aa822dfb