[INFO] cloning repository https://github.com/whyowisp/dungeoncrawler
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/whyowisp/dungeoncrawler" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwhyowisp%2Fdungeoncrawler", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwhyowisp%2Fdungeoncrawler'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6a08318e44d63d4f2b25ffe62de1fe5f8cb36154
[INFO] checking whyowisp/dungeoncrawler against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwhyowisp%2Fdungeoncrawler" "/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/whyowisp/dungeoncrawler on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/whyowisp/dungeoncrawler
[INFO] finished tweaking git repo https://github.com/whyowisp/dungeoncrawler
[INFO] tweaked toml for git repo https://github.com/whyowisp/dungeoncrawler written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/whyowisp/dungeoncrawler 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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "start" "-a" "299ab6a857e6377a686bd125b9c6a7750dda50870a8004f6c4f3666b7a871656", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "299ab6a857e6377a686bd125b9c6a7750dda50870a8004f6c4f3666b7a871656", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "299ab6a857e6377a686bd125b9c6a7750dda50870a8004f6c4f3666b7a871656", kill_on_drop: false }`
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[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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "start" "-a" "df0db4cfbedcb207f51a4d44eb11e150a2ebbf4b9992ef9f3abd587908610dfa", kill_on_drop: false }`
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[INFO] [stderr]     Checking regex v1.5.4
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[INFO] [stderr]     Checking wayland-egl v0.28.6
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[INFO] [stderr]     Checking bracket-terminal v0.8.5
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[INFO] [stdout] warning: unused import: `crate::map_builder::*`
[INFO] [stdout]   --> src/main.rs:10:13
[INFO] [stdout]    |
[INFO] [stdout] 10 |     pub use crate::map_builder::*;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::map_builder::*`
[INFO] [stdout]   --> src/main.rs:10:13
[INFO] [stdout]    |
[INFO] [stdout] 10 |     pub use crate::map_builder::*;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Wall` is never constructed
[INFO] [stdout]  --> src/map.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub enum TileType {
[INFO] [stdout]   |          -------- variant in this enum
[INFO] [stdout] 6 |     Wall,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `TileType` has a derived impl for the trait `Clone`, 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: variant `Wall` is never constructed
[INFO] [stdout]  --> src/map.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub enum TileType {
[INFO] [stdout]   |          -------- variant in this enum
[INFO] [stdout] 6 |     Wall,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `TileType` has a derived impl for the trait `Clone`, 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: method `try_idx` is never used
[INFO] [stdout]   --> src/map.rs:32:12
[INFO] [stdout]    |
[INFO] [stdout] 18 | impl Map {
[INFO] [stdout]    | -------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 32 |     pub fn try_idx(&self, point : Point) -> Option<usize> {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `NUM_ROOMS` is never used
[INFO] [stdout]  --> src/map_builder.rs:2:7
[INFO] [stdout]   |
[INFO] [stdout] 2 | const NUM_ROOMS: usize = 20;
[INFO] [stdout]   |       ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `try_idx` is never used
[INFO] [stdout]   --> src/map.rs:32:12
[INFO] [stdout]    |
[INFO] [stdout] 18 | impl Map {
[INFO] [stdout]    | -------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 32 |     pub fn try_idx(&self, point : Point) -> Option<usize> {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MapBuilder` is never constructed
[INFO] [stdout]  --> src/map_builder.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct MapBuilder {
[INFO] [stdout]   |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `NUM_ROOMS` is never used
[INFO] [stdout]  --> src/map_builder.rs:2:7
[INFO] [stdout]   |
[INFO] [stdout] 2 | const NUM_ROOMS: usize = 20;
[INFO] [stdout]   |       ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MapBuilder` is never constructed
[INFO] [stdout]  --> src/map_builder.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct MapBuilder {
[INFO] [stdout]   |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `apply_horizontal_tunnel`, `apply_vertical_tunnel`, `build_corridors`, `build_random_rooms`, and `fill` are never used
[INFO] [stdout]   --> src/map_builder.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl MapBuilder {
[INFO] [stdout]    | --------------- associated items in this implementation
[INFO] [stdout] 11 |     pub fn new(rng: &mut RandomNumberGenerator) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 23 |     fn apply_horizontal_tunnel(&mut self, x1:i32, x2:i32, y:i32) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 31 |     fn apply_vertical_tunnel(&mut self, y1:i32, y2:i32, x:i32) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 39 |     fn build_corridors(&mut self, rng: &mut RandomNumberGenerator) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 56 |     fn build_random_rooms(&mut self, rng : &mut RandomNumberGenerator) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 84 |     fn fill (&mut self, tile : TileType) {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `apply_horizontal_tunnel`, `apply_vertical_tunnel`, `build_corridors`, `build_random_rooms`, and `fill` are never used
[INFO] [stdout]   --> src/map_builder.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl MapBuilder {
[INFO] [stdout]    | --------------- associated items in this implementation
[INFO] [stdout] 11 |     pub fn new(rng: &mut RandomNumberGenerator) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 23 |     fn apply_horizontal_tunnel(&mut self, x1:i32, x2:i32, y:i32) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 31 |     fn apply_vertical_tunnel(&mut self, y1:i32, y2:i32, x:i32) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 39 |     fn build_corridors(&mut self, rng: &mut RandomNumberGenerator) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 56 |     fn build_random_rooms(&mut self, rng : &mut RandomNumberGenerator) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 84 |     fn fill (&mut self, tile : TileType) {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 12.14s
[INFO] running `Command { std: "docker" "inspect" "df0db4cfbedcb207f51a4d44eb11e150a2ebbf4b9992ef9f3abd587908610dfa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "df0db4cfbedcb207f51a4d44eb11e150a2ebbf4b9992ef9f3abd587908610dfa", kill_on_drop: false }`
[INFO] [stdout] df0db4cfbedcb207f51a4d44eb11e150a2ebbf4b9992ef9f3abd587908610dfa