[INFO] cloning repository https://github.com/davidalmarinho/snake-game-rust [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/davidalmarinho/snake-game-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdavidalmarinho%2Fsnake-game-rust", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdavidalmarinho%2Fsnake-game-rust'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] aa0cc825e3c3d5334c23efc0b0389ac326fa65a6 [INFO] checking davidalmarinho/snake-game-rust against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdavidalmarinho%2Fsnake-game-rust" "/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/davidalmarinho/snake-game-rust 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/davidalmarinho/snake-game-rust [INFO] finished tweaking git repo https://github.com/davidalmarinho/snake-game-rust [INFO] tweaked toml for git repo https://github.com/davidalmarinho/snake-game-rust written to /workspace/builds/worker-5-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/davidalmarinho/snake-game-rust 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] 4eaf16f1772f2dbc0fc323d5f7ef8bb1b22d106fc10d32badd79bdd8f865a2fd [INFO] running `Command { std: "docker" "start" "-a" "4eaf16f1772f2dbc0fc323d5f7ef8bb1b22d106fc10d32badd79bdd8f865a2fd", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "4eaf16f1772f2dbc0fc323d5f7ef8bb1b22d106fc10d32badd79bdd8f865a2fd", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "4eaf16f1772f2dbc0fc323d5f7ef8bb1b22d106fc10d32badd79bdd8f865a2fd", kill_on_drop: false }` [INFO] [stdout] 4eaf16f1772f2dbc0fc323d5f7ef8bb1b22d106fc10d32badd79bdd8f865a2fd [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] 8e253c1f06be8bee990db161b67accf82afd895aae0f73ea8ca75b38ffe754e8 [INFO] running `Command { std: "docker" "start" "-a" "8e253c1f06be8bee990db161b67accf82afd895aae0f73ea8ca75b38ffe754e8", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.139 [INFO] [stderr] Checking getrandom v0.2.8 [INFO] [stderr] Checking termios v0.3.3 [INFO] [stderr] Checking rand_core v0.6.4 [INFO] [stderr] Checking rand_chacha v0.3.1 [INFO] [stderr] Checking rand v0.8.5 [INFO] [stderr] Checking key_gen v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused variable: `i` [INFO] [stdout] --> src/main.rs:140:9 [INFO] [stdout] | [INFO] [stdout] 140 | for i in 0..number_of_rocks { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `i` [INFO] [stdout] --> src/main.rs:140:9 [INFO] [stdout] | [INFO] [stdout] 140 | for i in 0..number_of_rocks { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable `last_play` is assigned to, but never used [INFO] [stdout] --> src/main.rs:180:13 [INFO] [stdout] | [INFO] [stdout] 180 | let mut last_play: char = cur_play; [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: consider using `_last_play` instead [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `last_play` is never read [INFO] [stdout] --> src/main.rs:198:25 [INFO] [stdout] | [INFO] [stdout] 198 | last_play = cur_play; [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable `last_play` is assigned to, but never used [INFO] [stdout] --> src/main.rs:180:13 [INFO] [stdout] | [INFO] [stdout] 180 | let mut last_play: char = cur_play; [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: consider using `_last_play` instead [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `last_play` is never read [INFO] [stdout] --> src/main.rs:198:25 [INFO] [stdout] | [INFO] [stdout] 198 | last_play = cur_play; [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.09s [INFO] running `Command { std: "docker" "inspect" "8e253c1f06be8bee990db161b67accf82afd895aae0f73ea8ca75b38ffe754e8", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "8e253c1f06be8bee990db161b67accf82afd895aae0f73ea8ca75b38ffe754e8", kill_on_drop: false }` [INFO] [stdout] 8e253c1f06be8bee990db161b67accf82afd895aae0f73ea8ca75b38ffe754e8 [INFO] checking davidalmarinho/snake-game-rust against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdavidalmarinho%2Fsnake-game-rust" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/davidalmarinho/snake-game-rust on toolchain 2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/davidalmarinho/snake-game-rust [INFO] finished tweaking git repo https://github.com/davidalmarinho/snake-game-rust [INFO] tweaked toml for git repo https://github.com/davidalmarinho/snake-game-rust written to /workspace/builds/worker-5-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/davidalmarinho/snake-game-rust 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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 2241cc824dedc01093873052e3d16037407367ca80d9ab96da7a6108abc873a8 [INFO] running `Command { std: "docker" "start" "-a" "2241cc824dedc01093873052e3d16037407367ca80d9ab96da7a6108abc873a8", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "2241cc824dedc01093873052e3d16037407367ca80d9ab96da7a6108abc873a8", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "2241cc824dedc01093873052e3d16037407367ca80d9ab96da7a6108abc873a8", kill_on_drop: false }` [INFO] [stdout] 2241cc824dedc01093873052e3d16037407367ca80d9ab96da7a6108abc873a8 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 863d538a82e4b4c7f63ee51d19f67d35249875c4aa22904537b6ca3221e64d6d [INFO] running `Command { std: "docker" "start" "-a" "863d538a82e4b4c7f63ee51d19f67d35249875c4aa22904537b6ca3221e64d6d", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.139 [INFO] [stderr] Checking getrandom v0.2.8 [INFO] [stderr] Checking termios v0.3.3 [INFO] [stderr] Checking rand_core v0.6.4 [INFO] [stderr] Checking rand_chacha v0.3.1 [INFO] [stderr] Checking rand v0.8.5 [INFO] [stderr] Checking key_gen v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused variable: `i` [INFO] [stdout] --> src/main.rs:140:9 [INFO] [stdout] | [INFO] [stdout] 140 | for i in 0..number_of_rocks { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable `last_play` is assigned to, but never used [INFO] [stdout] --> src/main.rs:180:13 [INFO] [stdout] | [INFO] [stdout] 180 | let mut last_play: char = cur_play; [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: consider using `_last_play` instead [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `last_play` is never read [INFO] [stdout] --> src/main.rs:198:25 [INFO] [stdout] | [INFO] [stdout] 198 | last_play = cur_play; [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `i` [INFO] [stdout] --> src/main.rs:140:9 [INFO] [stdout] | [INFO] [stdout] 140 | for i in 0..number_of_rocks { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable `last_play` is assigned to, but never used [INFO] [stdout] --> src/main.rs:180:13 [INFO] [stdout] | [INFO] [stdout] 180 | let mut last_play: char = cur_play; [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: consider using `_last_play` instead [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `last_play` is never read [INFO] [stdout] --> src/main.rs:198:25 [INFO] [stdout] | [INFO] [stdout] 198 | last_play = cur_play; [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.87s [INFO] running `Command { std: "docker" "inspect" "863d538a82e4b4c7f63ee51d19f67d35249875c4aa22904537b6ca3221e64d6d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "863d538a82e4b4c7f63ee51d19f67d35249875c4aa22904537b6ca3221e64d6d", kill_on_drop: false }` [INFO] [stdout] 863d538a82e4b4c7f63ee51d19f67d35249875c4aa22904537b6ca3221e64d6d