[INFO] cloning repository https://github.com/ede1998/sweepers
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ede1998/sweepers" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fede1998%2Fsweepers", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fede1998%2Fsweepers'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1c1774f10b3dac7fd38726d19106a4b861a20068
[INFO] testing ede1998/sweepers against master#b70888601af92f6cdc0364abab3446e418b91d36 for pr-86479
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fede1998%2Fsweepers" "/workspace/builds/worker-14/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ede1998/sweepers on toolchain b70888601af92f6cdc0364abab3446e418b91d36
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ede1998/sweepers
[INFO] finished tweaking git repo https://github.com/ede1998/sweepers
[INFO] tweaked toml for git repo https://github.com/ede1998/sweepers written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/ede1998/sweepers already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] ddb3bf4c3c200b96e40b07c8d2754b16815ee54eaee03589fc37ab1049e215fb
[INFO] running `Command { std: "docker" "start" "-a" "ddb3bf4c3c200b96e40b07c8d2754b16815ee54eaee03589fc37ab1049e215fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ddb3bf4c3c200b96e40b07c8d2754b16815ee54eaee03589fc37ab1049e215fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ddb3bf4c3c200b96e40b07c8d2754b16815ee54eaee03589fc37ab1049e215fb", kill_on_drop: false }`
[INFO] [stdout] ddb3bf4c3c200b96e40b07c8d2754b16815ee54eaee03589fc37ab1049e215fb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6b94bccbccf89c59140f52d3ed8fb8d653bbfac6de226085ab9887ad4d7bbc48
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "6b94bccbccf89c59140f52d3ed8fb8d653bbfac6de226085ab9887ad4d7bbc48", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.97
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]    Compiling unicode-width v0.1.8
[INFO] [stderr]    Compiling ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling vec_map v0.8.2
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling termion v1.5.6
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]    Compiling custom_debug_derive v0.5.0
[INFO] [stderr]    Compiling sweepers v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `parent_fact`
[INFO] [stdout]    --> src/solver.rs:291:62
[INFO] [stdout]     |
[INFO] [stdout] 291 |     fn derived_one(iteration: usize, produced_by: &dyn Rule, parent_fact: &Fact) -> Self {
[INFO] [stdout]     |                                                              ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_parent_fact`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `parent_fact_1`
[INFO] [stdout]    --> src/solver.rs:304:9
[INFO] [stdout]     |
[INFO] [stdout] 304 |         parent_fact_1: &Fact,
[INFO] [stdout]     |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_parent_fact_1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `parent_fact_2`
[INFO] [stdout]    --> src/solver.rs:305:9
[INFO] [stdout]     |
[INFO] [stdout] 305 |         parent_fact_2: &Fact,
[INFO] [stdout]     |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_parent_fact_2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `with_area`
[INFO] [stdout]   --> src/core/area.rs:24:12
[INFO] [stdout]    |
[INFO] [stdout] 24 |     pub fn with_area(width: usize, height: usize, area: Vec<T>) -> Self {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `loc_iter`
[INFO] [stdout]   --> src/core/area.rs:56:12
[INFO] [stdout]    |
[INFO] [stdout] 56 |     pub fn loc_iter(&self) -> impl Iterator<Item = (Location, &T)> {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Mark`
[INFO] [stdout]   --> src/core/command.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 29 |     Mark,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Unmark`
[INFO] [stdout]   --> src/core/command.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 30 |     Unmark,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_win`
[INFO] [stdout]   --> src/core/game_state.rs:55:12
[INFO] [stdout]    |
[INFO] [stdout] 55 |     pub fn is_win(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated constant is never used: `INVALID`
[INFO] [stdout]    --> src/core/location.rs:114:5
[INFO] [stdout]     |
[INFO] [stdout] 114 | /     pub const INVALID: Location = Location {
[INFO] [stdout] 115 | |         x: Bounded::Invalid,
[INFO] [stdout] 116 | |         y: Bounded::Invalid,
[INFO] [stdout] 117 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `try_mv`
[INFO] [stdout]    --> src/core/location.rs:195:12
[INFO] [stdout]     |
[INFO] [stdout] 195 |     pub fn try_mv(self, d: Direction) -> Self {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `as_mut_revealed`
[INFO] [stdout]   --> src/core/mine_field.rs:60:12
[INFO] [stdout]    |
[INFO] [stdout] 60 |     pub fn as_mut_revealed(&mut self) -> Option<&mut usize> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `as_revealed`
[INFO] [stdout]   --> src/core/mine_field.rs:68:12
[INFO] [stdout]    |
[INFO] [stdout] 68 |     pub fn as_revealed(&self) -> Option<&usize> {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `with_generator`
[INFO] [stdout]    --> src/core/mine_field.rs:137:12
[INFO] [stdout]     |
[INFO] [stdout] 137 |     pub fn with_generator(params: Parameters, generator: Box<dyn MinefieldGenerator>) -> Self {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new_active_game`
[INFO] [stdout]    --> src/core/mine_field.rs:156:12
[INFO] [stdout]     |
[INFO] [stdout] 156 |     pub fn new_active_game(grid: &str) -> Self {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `unreveal`
[INFO] [stdout]    --> src/core/mine_field.rs:289:12
[INFO] [stdout]     |
[INFO] [stdout] 289 |     pub fn unreveal(&mut self, location: Location) -> Option<State> {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `draw_single`
[INFO] [stdout]    --> src/frontend/terminal.rs:264:12
[INFO] [stdout]     |
[INFO] [stdout] 264 |     pub fn draw_single(&mut self, location: Location, state: &State) {
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `base`
[INFO] [stdout]    --> src/solver.rs:271:8
[INFO] [stdout]     |
[INFO] [stdout] 271 |     fn base(base_location: Location, produced_by: &dyn Rule) -> Self {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `base_all`
[INFO] [stdout]    --> src/solver.rs:281:8
[INFO] [stdout]     |
[INFO] [stdout] 281 |     fn base_all(produced_by: &dyn Rule) -> Self {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `serialize`
[INFO] [stdout]    --> src/solver.rs:409:8
[INFO] [stdout]     |
[INFO] [stdout] 409 |     fn serialize(&self) -> String {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `seed`
[INFO] [stdout]    --> src/solver.rs:448:8
[INFO] [stdout]     |
[INFO] [stdout] 448 |     fn seed(mf: &Minefield) -> Self {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `add`
[INFO] [stdout]    --> src/solver.rs:488:8
[INFO] [stdout]     |
[INFO] [stdout] 488 |     fn add<I: IntoIterator<Item = Fact>>(&mut self, container: I) -> bool {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `guaranteed_safe_locations`
[INFO] [stdout]    --> src/solver.rs:494:8
[INFO] [stdout]     |
[INFO] [stdout] 494 |     fn guaranteed_safe_locations(&self) -> HashSet<Location> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `guaranteed_mines`
[INFO] [stdout]    --> src/solver.rs:502:8
[INFO] [stdout]     |
[INFO] [stdout] 502 |     fn guaranteed_mines(&self) -> HashSet<Location> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `solve`
[INFO] [stdout]    --> src/solver.rs:510:8
[INFO] [stdout]     |
[INFO] [stdout] 510 |     fn solve(mf: &Minefield) -> (HashSet<Location>, HashSet<Location>) {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `solve_dump`
[INFO] [stdout]    --> src/solver.rs:513:8
[INFO] [stdout]     |
[INFO] [stdout] 513 |     fn solve_dump(
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `dump`
[INFO] [stdout]    --> src/solver.rs:549:8
[INFO] [stdout]     |
[INFO] [stdout] 549 |     fn dump(&self, path: &Path) -> std::io::Result<()> {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 26 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 38.79s
[INFO] running `Command { std: "docker" "inspect" "6b94bccbccf89c59140f52d3ed8fb8d653bbfac6de226085ab9887ad4d7bbc48", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6b94bccbccf89c59140f52d3ed8fb8d653bbfac6de226085ab9887ad4d7bbc48", kill_on_drop: false }`
[INFO] [stdout] 6b94bccbccf89c59140f52d3ed8fb8d653bbfac6de226085ab9887ad4d7bbc48
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d9af3430665a17aa74065786f4ed398c3a9494d7f4188353cf7d40c0db3f3270
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "d9af3430665a17aa74065786f4ed398c3a9494d7f4188353cf7d40c0db3f3270", kill_on_drop: false }`
[INFO] [stderr]    Compiling sweepers v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `parent_fact`
[INFO] [stdout]    --> src/solver.rs:291:62
[INFO] [stdout]     |
[INFO] [stdout] 291 |     fn derived_one(iteration: usize, produced_by: &dyn Rule, parent_fact: &Fact) -> Self {
[INFO] [stdout]     |                                                              ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_parent_fact`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `parent_fact_1`
[INFO] [stdout]    --> src/solver.rs:304:9
[INFO] [stdout]     |
[INFO] [stdout] 304 |         parent_fact_1: &Fact,
[INFO] [stdout]     |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_parent_fact_1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `parent_fact_2`
[INFO] [stdout]    --> src/solver.rs:305:9
[INFO] [stdout]     |
[INFO] [stdout] 305 |         parent_fact_2: &Fact,
[INFO] [stdout]     |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_parent_fact_2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Mark`
[INFO] [stdout]   --> src/core/command.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 29 |     Mark,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Unmark`
[INFO] [stdout]   --> src/core/command.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 30 |     Unmark,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_win`
[INFO] [stdout]   --> src/core/game_state.rs:55:12
[INFO] [stdout]    |
[INFO] [stdout] 55 |     pub fn is_win(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `try_mv`
[INFO] [stdout]    --> src/core/location.rs:195:12
[INFO] [stdout]     |
[INFO] [stdout] 195 |     pub fn try_mv(self, d: Direction) -> Self {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `as_mut_revealed`
[INFO] [stdout]   --> src/core/mine_field.rs:60:12
[INFO] [stdout]    |
[INFO] [stdout] 60 |     pub fn as_mut_revealed(&mut self) -> Option<&mut usize> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `with_generator`
[INFO] [stdout]    --> src/core/mine_field.rs:137:12
[INFO] [stdout]     |
[INFO] [stdout] 137 |     pub fn with_generator(params: Parameters, generator: Box<dyn MinefieldGenerator>) -> Self {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `unreveal`
[INFO] [stdout]    --> src/core/mine_field.rs:289:12
[INFO] [stdout]     |
[INFO] [stdout] 289 |     pub fn unreveal(&mut self, location: Location) -> Option<State> {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `draw_single`
[INFO] [stdout]    --> src/frontend/terminal.rs:264:12
[INFO] [stdout]     |
[INFO] [stdout] 264 |     pub fn draw_single(&mut self, location: Location, state: &State) {
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `solve`
[INFO] [stdout]    --> src/solver.rs:510:8
[INFO] [stdout]     |
[INFO] [stdout] 510 |     fn solve(mf: &Minefield) -> (HashSet<Location>, HashSet<Location>) {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 4.57s
[INFO] running `Command { std: "docker" "inspect" "d9af3430665a17aa74065786f4ed398c3a9494d7f4188353cf7d40c0db3f3270", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d9af3430665a17aa74065786f4ed398c3a9494d7f4188353cf7d40c0db3f3270", kill_on_drop: false }`
[INFO] [stdout] d9af3430665a17aa74065786f4ed398c3a9494d7f4188353cf7d40c0db3f3270
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] c4106432bdd4d6c44b567be295190f835d6c27e3d7108ff95523266f3c49d536
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "c4106432bdd4d6c44b567be295190f835d6c27e3d7108ff95523266f3c49d536", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `parent_fact`
[INFO] [stderr]    --> src/solver.rs:291:62
[INFO] [stderr]     |
[INFO] [stderr] 291 |     fn derived_one(iteration: usize, produced_by: &dyn Rule, parent_fact: &Fact) -> Self {
[INFO] [stderr]     |                                                              ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_parent_fact`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `parent_fact_1`
[INFO] [stderr]    --> src/solver.rs:304:9
[INFO] [stderr]     |
[INFO] [stderr] 304 |         parent_fact_1: &Fact,
[INFO] [stderr]     |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_parent_fact_1`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `parent_fact_2`
[INFO] [stderr]    --> src/solver.rs:305:9
[INFO] [stderr]     |
[INFO] [stderr] 305 |         parent_fact_2: &Fact,
[INFO] [stderr]     |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_parent_fact_2`
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Mark`
[INFO] [stderr]   --> src/core/command.rs:29:5
[INFO] [stderr]    |
[INFO] [stderr] 29 |     Mark,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Unmark`
[INFO] [stderr]   --> src/core/command.rs:30:5
[INFO] [stderr]    |
[INFO] [stderr] 30 |     Unmark,
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `is_win`
[INFO] [stderr]   --> src/core/game_state.rs:55:12
[INFO] [stderr]    |
[INFO] [stderr] 55 |     pub fn is_win(&self) -> bool {
[INFO] [stderr]    |            ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `try_mv`
[INFO] [stderr]    --> src/core/location.rs:195:12
[INFO] [stderr]     |
[INFO] [stderr] 195 |     pub fn try_mv(self, d: Direction) -> Self {
[INFO] [stderr]     |            ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `as_mut_revealed`
[INFO] [stderr]   --> src/core/mine_field.rs:60:12
[INFO] [stderr]    |
[INFO] [stderr] 60 |     pub fn as_mut_revealed(&mut self) -> Option<&mut usize> {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `with_generator`
[INFO] [stderr]    --> src/core/mine_field.rs:137:12
[INFO] [stderr]     |
[INFO] [stderr] 137 |     pub fn with_generator(params: Parameters, generator: Box<dyn MinefieldGenerator>) -> Self {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `unreveal`
[INFO] [stderr]    --> src/core/mine_field.rs:289:12
[INFO] [stderr]     |
[INFO] [stderr] 289 |     pub fn unreveal(&mut self, location: Location) -> Option<State> {
[INFO] [stderr]     |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `draw_single`
[INFO] [stderr]    --> src/frontend/terminal.rs:264:12
[INFO] [stderr]     |
[INFO] [stderr] 264 |     pub fn draw_single(&mut self, location: Location, state: &State) {
[INFO] [stderr]     |            ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `solve`
[INFO] [stderr]    --> src/solver.rs:510:8
[INFO] [stderr]     |
[INFO] [stderr] 510 |     fn solve(mf: &Minefield) -> (HashSet<Location>, HashSet<Location>) {
[INFO] [stderr]     |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `sweepers` (bin "sweepers" test) generated 12 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/sweepers-04dce9ce3dd15735)
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test core::mine_field::tests::make_active_game ... ok
[INFO] [stdout] test solver::tests::one_fact_mine_deduction ... ok
[INFO] [stdout] test generator::tests::location_skipper_maps_indices_correctly ... ok
[INFO] [stdout] test solver::tests::seed ... ok
[INFO] [stdout] test solver::tests::two_fact_safe_deduction ... ok
[INFO] [stdout] test solver::tests::two_fact_mine_and_safe_deduction ... ok
[INFO] [stdout] test solver::tests::cross_deduction has been running for over 60 seconds
[INFO] [stdout] test solver::tests::cross_deduction ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 83.19s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "c4106432bdd4d6c44b567be295190f835d6c27e3d7108ff95523266f3c49d536", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c4106432bdd4d6c44b567be295190f835d6c27e3d7108ff95523266f3c49d536", kill_on_drop: false }`
[INFO] [stdout] c4106432bdd4d6c44b567be295190f835d6c27e3d7108ff95523266f3c49d536