[INFO] cloning repository https://github.com/mtwtkman/nc2
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mtwtkman/nc2" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmtwtkman%2Fnc2", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmtwtkman%2Fnc2'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e7bc9d7092295ade3b2a56fbdf22c331bb90c84e
[INFO] checking mtwtkman/nc2 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmtwtkman%2Fnc2" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mtwtkman/nc2 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/mtwtkman/nc2
[INFO] finished tweaking git repo https://github.com/mtwtkman/nc2
[INFO] tweaked toml for git repo https://github.com/mtwtkman/nc2 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/mtwtkman/nc2 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] b7f00ee80f17a63728cba12fccf2021392ebdd6186883e9adb6546b11d9de277
[INFO] running `Command { std: "docker" "start" "-a" "b7f00ee80f17a63728cba12fccf2021392ebdd6186883e9adb6546b11d9de277", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b7f00ee80f17a63728cba12fccf2021392ebdd6186883e9adb6546b11d9de277", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b7f00ee80f17a63728cba12fccf2021392ebdd6186883e9adb6546b11d9de277", kill_on_drop: false }`
[INFO] [stdout] b7f00ee80f17a63728cba12fccf2021392ebdd6186883e9adb6546b11d9de277
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 9289e9024a612d55a64771fead0c1614581692f968d523bb15fb87ead2f1cc90
[INFO] running `Command { std: "docker" "start" "-a" "9289e9024a612d55a64771fead0c1614581692f968d523bb15fb87ead2f1cc90", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.74
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]    Compiling bumpalo v3.7.0
[INFO] [stderr]    Compiling wasm-bindgen v0.2.74
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling libc v0.2.97
[INFO] [stderr]    Compiling wee_alloc v0.4.5
[INFO] [stderr]     Checking memory_units v0.4.0
[INFO] [stderr]     Checking engine v0.1.0 (/opt/rustwide/workdir/engine)
[INFO] [stdout] warning: method `is_occupied_by` is never used
[INFO] [stdout]   --> engine/src/board.rs:90:19
[INFO] [stdout]    |
[INFO] [stdout] 18 | impl Board {
[INFO] [stdout]    | ---------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 90 |     pub(crate) fn is_occupied_by(&self, position: &Position, player: &Player) -> bool {
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `is_moveable` is never used
[INFO] [stdout]    --> engine/src/board.rs:220:19
[INFO] [stdout]     |
[INFO] [stdout] 219 | impl DestinationState {
[INFO] [stdout]     | --------------------- method in this implementation
[INFO] [stdout] 220 |     pub(crate) fn is_moveable(&self) -> bool {
[INFO] [stdout]     |                   ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `moveable_directions` is never used
[INFO] [stdout]    --> engine/src/board.rs:329:19
[INFO] [stdout]     |
[INFO] [stdout] 277 | impl MovingRange {
[INFO] [stdout]     | ---------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 329 |     pub(crate) fn moveable_directions(&self) -> BTreeSet<Direction> {
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `is_left_edge`, `is_right_edge`, and `is_middle` are never used
[INFO] [stdout]   --> engine/src/position.rs:72:8
[INFO] [stdout]    |
[INFO] [stdout] 71 | impl Column {
[INFO] [stdout]    | ----------- methods in this implementation
[INFO] [stdout] 72 |     fn is_left_edge(&self) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 76 |     fn is_right_edge(&self) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 80 |     fn is_middle(&self) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple methods are never used
[INFO] [stdout]    --> engine/src/position.rs:185:19
[INFO] [stdout]     |
[INFO] [stdout] 126 | impl Position {
[INFO] [stdout]     | ------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 185 |     pub(crate) fn is_left_edge_top(&self) -> bool {
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 189 |     pub(crate) fn is_left_edge_bottom(&self) -> bool {
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 193 |     pub(crate) fn is_right_edge_top(&self) -> bool {
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 197 |     pub(crate) fn is_right_edge_bottom(&self) -> bool {
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 201 |     pub(crate) fn is_right_edge_middle_row(&self) -> bool {
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 205 |     pub(crate) fn is_left_edge_middle_row(&self) -> bool {
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 209 |     pub(crate) fn is_middle_column_top(&self) -> bool {
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 213 |     pub(crate) fn is_middle_column_bottom(&self) -> bool {
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `is_occupied_by` is never used
[INFO] [stdout]   --> engine/src/board.rs:90:19
[INFO] [stdout]    |
[INFO] [stdout] 18 | impl Board {
[INFO] [stdout]    | ---------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 90 |     pub(crate) fn is_occupied_by(&self, position: &Position, player: &Player) -> bool {
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.74
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.74
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.74
[INFO] [stderr]     Checking js-sys v0.3.51
[INFO] [stderr]     Checking web-sys v0.3.51
[INFO] [stderr]     Checking wasm v0.1.0 (/opt/rustwide/workdir/wasm)
[INFO] [stdout] warning: unused imports: `Action`, `Column`, `Position`, `Row`, `board::Direction`
[INFO] [stdout]  --> wasm/src/lib.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 |     board::Direction,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 3 |     position::{Column, Position, Row},
[INFO] [stdout]   |                ^^^^^^  ^^^^^^^^  ^^^
[INFO] [stdout] 4 |     Action, Game,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Action`, `Column`, `Position`, `Row`, `board::Direction`
[INFO] [stdout]  --> wasm/src/lib.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 |     board::Direction,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 3 |     position::{Column, Position, Row},
[INFO] [stdout]   |                ^^^^^^  ^^^^^^^^  ^^^
[INFO] [stdout] 4 |     Action, Game,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `game` and `history` are never read
[INFO] [stdout]   --> wasm/src/lib.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | struct Battle {
[INFO] [stdout]    |        ------ fields in this struct
[INFO] [stdout] 13 |     game: Game,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 14 |     history: Vec<Game>,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `display_board` are never used
[INFO] [stdout]   --> wasm/src/lib.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout] 18 | impl Battle {
[INFO] [stdout]    | ----------- associated items in this implementation
[INFO] [stdout] 19 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 25 |     pub fn display_board(&self) -> String {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `game` and `history` are never read
[INFO] [stdout]   --> wasm/src/lib.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | struct Battle {
[INFO] [stdout]    |        ------ fields in this struct
[INFO] [stdout] 13 |     game: Game,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 14 |     history: Vec<Game>,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `display_board` are never used
[INFO] [stdout]   --> wasm/src/lib.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout] 18 | impl Battle {
[INFO] [stdout]    | ----------- associated items in this implementation
[INFO] [stdout] 19 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 25 |     pub fn display_board(&self) -> String {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 11.51s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: wasm-bindgen v0.2.74
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 3`
[INFO] running `Command { std: "docker" "inspect" "9289e9024a612d55a64771fead0c1614581692f968d523bb15fb87ead2f1cc90", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9289e9024a612d55a64771fead0c1614581692f968d523bb15fb87ead2f1cc90", kill_on_drop: false }`
[INFO] [stdout] 9289e9024a612d55a64771fead0c1614581692f968d523bb15fb87ead2f1cc90