[INFO] cloning repository https://github.com/gregorholzmann/rust-playground [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/gregorholzmann/rust-playground" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgregorholzmann%2Frust-playground", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgregorholzmann%2Frust-playground'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 6e44145369c9374ccf0e294cbae2934d301387e2 [INFO] checking gregorholzmann/rust-playground against master#b2f1ccf524a3a4cf9c34545167cc23b659cf1cbd for pr-155501 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgregorholzmann%2Frust-playground" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/gregorholzmann/rust-playground [INFO] finished tweaking git repo https://github.com/gregorholzmann/rust-playground [INFO] tweaked toml for git repo https://github.com/gregorholzmann/rust-playground written to /workspace/builds/worker-4-tc1/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/gregorholzmann/rust-playground on toolchain b2f1ccf524a3a4cf9c34545167cc23b659cf1cbd [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b2f1ccf524a3a4cf9c34545167cc23b659cf1cbd" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/gregorholzmann/rust-playground 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" "+b2f1ccf524a3a4cf9c34545167cc23b659cf1cbd" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] warning: `package.edition` is unspecified, defaulting to `2015` while the latest is `2024` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded rand v0.3.15 [INFO] [stderr] Downloaded libc v0.2.26 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+b2f1ccf524a3a4cf9c34545167cc23b659cf1cbd" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] f6a2d3cf1ee1d33cfdaf8fc30bb9d023ca2b6b7fdd79a4e4216eda40de73e0b7 [INFO] running `Command { std: "docker" "start" "-a" "f6a2d3cf1ee1d33cfdaf8fc30bb9d023ca2b6b7fdd79a4e4216eda40de73e0b7", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "f6a2d3cf1ee1d33cfdaf8fc30bb9d023ca2b6b7fdd79a4e4216eda40de73e0b7", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f6a2d3cf1ee1d33cfdaf8fc30bb9d023ca2b6b7fdd79a4e4216eda40de73e0b7", kill_on_drop: false }` [INFO] [stdout] f6a2d3cf1ee1d33cfdaf8fc30bb9d023ca2b6b7fdd79a4e4216eda40de73e0b7 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+b2f1ccf524a3a4cf9c34545167cc23b659cf1cbd" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 45465d773dec9816b6d8165ca33b203dee3f241d5deed96d4adaf021a7fe58f6 [INFO] running `Command { std: "docker" "start" "-a" "45465d773dec9816b6d8165ca33b203dee3f241d5deed96d4adaf021a7fe58f6", kill_on_drop: false }` [INFO] [stderr] warning: `package.edition` is unspecified, defaulting to `2015` while the latest is `2024` [INFO] [stderr] Checking libc v0.2.26 [INFO] [stderr] Checking rand v0.3.15 [INFO] [stderr] Checking rust-playground v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: value assigned to `num_value` is never read [INFO] [stdout] --> src/main.rs:25:37 [INFO] [stdout] | [INFO] [stdout] 25 | let mut num_value: u8 = 0; [INFO] [stdout] | ^ this value is reassigned later and never used [INFO] [stdout] ... [INFO] [stdout] 29 | num_value = card.value.parse::().unwrap(); [INFO] [stdout] | --------------------------------------------- `num_value` is overwritten here before the previous value is read [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `x` [INFO] [stdout] --> src/main.rs:86:9 [INFO] [stdout] | [INFO] [stdout] 86 | for x in 0..number_of_cards { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_x` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:101:51 [INFO] [stdout] | [INFO] [stdout] 101 | fn end_game(player_hand: Hand, dealer_hand: Hand, mut deck: &mut Vec) { [INFO] [stdout] | ----^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `num_value` is never read [INFO] [stdout] --> src/main.rs:25:37 [INFO] [stdout] | [INFO] [stdout] 25 | let mut num_value: u8 = 0; [INFO] [stdout] | ^ this value is reassigned later and never used [INFO] [stdout] ... [INFO] [stdout] 29 | num_value = card.value.parse::().unwrap(); [INFO] [stdout] | --------------------------------------------- `num_value` is overwritten here before the previous value is read [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `x` [INFO] [stdout] --> src/main.rs:86:9 [INFO] [stdout] | [INFO] [stdout] 86 | for x in 0..number_of_cards { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_x` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:101:51 [INFO] [stdout] | [INFO] [stdout] 101 | fn end_game(player_hand: Hand, dealer_hand: Hand, mut deck: &mut Vec) { [INFO] [stdout] | ----^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.58s [INFO] running `Command { std: "docker" "inspect" "45465d773dec9816b6d8165ca33b203dee3f241d5deed96d4adaf021a7fe58f6", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "45465d773dec9816b6d8165ca33b203dee3f241d5deed96d4adaf021a7fe58f6", kill_on_drop: false }` [INFO] [stdout] 45465d773dec9816b6d8165ca33b203dee3f241d5deed96d4adaf021a7fe58f6