[INFO] cloning repository https://github.com/Incorrectish/autograder [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Incorrectish/autograder" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FIncorrectish%2Fautograder", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FIncorrectish%2Fautograder'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] da5e99ced6a750bdf6a0a844947e9a1a13a7ed9c [INFO] checking Incorrectish/autograder against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FIncorrectish%2Fautograder" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/Incorrectish/autograder 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/Incorrectish/autograder [INFO] finished tweaking git repo https://github.com/Incorrectish/autograder [INFO] tweaked toml for git repo https://github.com/Incorrectish/autograder written to /workspace/builds/worker-4-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/Incorrectish/autograder 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] [stderr] Downloading crates ... [INFO] [stderr] Downloaded signal-hook v0.3.14 [INFO] [stderr] Downloaded async-process v1.6.0 [INFO] [stderr] Downloaded futures-io v0.3.25 [INFO] [stderr] Downloaded async-io v1.12.0 [INFO] [stderr] Downloaded concurrent-queue v2.0.0 [INFO] [stderr] Downloaded polling v2.5.2 [INFO] [stderr] Downloaded futures-core v0.3.25 [INFO] [stderr] Downloaded async-task v4.3.0 [INFO] [stderr] Downloaded blocking v1.3.0 [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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 674530923aa32913d5336f1029f8617462eba72219b6f01164bc652aff0771e3 [INFO] running `Command { std: "docker" "start" "-a" "674530923aa32913d5336f1029f8617462eba72219b6f01164bc652aff0771e3", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "674530923aa32913d5336f1029f8617462eba72219b6f01164bc652aff0771e3", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "674530923aa32913d5336f1029f8617462eba72219b6f01164bc652aff0771e3", kill_on_drop: false }` [INFO] [stdout] 674530923aa32913d5336f1029f8617462eba72219b6f01164bc652aff0771e3 [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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 6d580b90db99e49e7a7ba1c41fd62874a2490f387ceaad5abeccc851ddae14c4 [INFO] running `Command { std: "docker" "start" "-a" "6d580b90db99e49e7a7ba1c41fd62874a2490f387ceaad5abeccc851ddae14c4", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.139 [INFO] [stderr] Compiling futures-core v0.3.25 [INFO] [stderr] Compiling crossbeam-utils v0.8.14 [INFO] [stderr] Compiling polling v2.5.2 [INFO] [stderr] Checking parking v2.0.0 [INFO] [stderr] Checking futures-io v0.3.25 [INFO] [stderr] Checking waker-fn v1.1.0 [INFO] [stderr] Checking fastrand v1.8.0 [INFO] [stderr] Compiling async-io v1.12.0 [INFO] [stderr] Compiling signal-hook v0.3.14 [INFO] [stderr] Compiling async-process v1.6.0 [INFO] [stderr] Checking futures-lite v1.12.0 [INFO] [stderr] Checking concurrent-queue v2.0.0 [INFO] [stderr] Checking socket2 v0.4.7 [INFO] [stderr] Checking signal-hook-registry v1.4.0 [INFO] [stderr] Checking async-lock v2.6.0 [INFO] [stderr] Checking connect_4_test v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: irrefutable `if let` pattern [INFO] [stdout] --> src/main.rs:51:8 [INFO] [stdout] | [INFO] [stdout] 51 | if let [ref mut score0, ref mut score1, ref mut score2, ref mut score3, ref mut score4] = [INFO] [stdout] | ________^ [INFO] [stdout] 52 | | scores [INFO] [stdout] | |______________^ [INFO] [stdout] | [INFO] [stdout] = note: this pattern will always match, so the `if let` is useless [INFO] [stdout] = help: consider replacing the `if let` with a `let` [INFO] [stdout] = note: `#[warn(irrefutable_let_patterns)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: constant `UNIVERSAL_OFFSET` is never used [INFO] [stdout] --> src/main.rs:9:7 [INFO] [stdout] | [INFO] [stdout] 9 | const UNIVERSAL_OFFSET: usize = 0; [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: constant `P2_WIN_TEST_MOVES_3` is never used [INFO] [stdout] --> src/main.rs:25:7 [INFO] [stdout] | [INFO] [stdout] 25 | const P2_WIN_TEST_MOVES_3: [usize; 34] = [ [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `debug_board` is never used [INFO] [stdout] --> src/main.rs:180:4 [INFO] [stdout] | [INFO] [stdout] 180 | fn debug_board(board: &[[&str; 7]; 6]) { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `matches` is never used [INFO] [stdout] --> src/main.rs:192:4 [INFO] [stdout] | [INFO] [stdout] 192 | fn matches(buffer: &[String; LINES_OF_OUTPUT], board: &[[&str; 7]; 6]) -> bool { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `debug` is never used [INFO] [stdout] --> src/main.rs:218:4 [INFO] [stdout] | [INFO] [stdout] 218 | fn debug(buffer: &[String; LINES_OF_OUTPUT]) { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `count_matches` is never used [INFO] [stdout] --> src/main.rs:225:4 [INFO] [stdout] | [INFO] [stdout] 225 | fn count_matches(buffer: &str, substring: &str) -> usize { [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:105:13 [INFO] [stdout] | [INFO] [stdout] 105 | stdout_reader.read_line(&mut buffer[output_line]).await; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 105 | let _ = stdout_reader.read_line(&mut buffer[output_line]).await; [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:118:9 [INFO] [stdout] | [INFO] [stdout] 118 | / stdin [INFO] [stdout] 119 | | .write_all(format!("{}\n", input[i] - INPUT_OFFSET).as_bytes()) [INFO] [stdout] 120 | | .await; [INFO] [stdout] | |__________________^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 118 | let _ = stdin [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:129:9 [INFO] [stdout] | [INFO] [stdout] 129 | stdout_reader.read_line(&mut buffer[output_line]).await; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 129 | let _ = stdout_reader.read_line(&mut buffer[output_line]).await; [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 10 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: irrefutable `if let` pattern [INFO] [stdout] --> src/main.rs:51:8 [INFO] [stdout] | [INFO] [stdout] 51 | if let [ref mut score0, ref mut score1, ref mut score2, ref mut score3, ref mut score4] = [INFO] [stdout] | ________^ [INFO] [stdout] 52 | | scores [INFO] [stdout] | |______________^ [INFO] [stdout] | [INFO] [stdout] = note: this pattern will always match, so the `if let` is useless [INFO] [stdout] = help: consider replacing the `if let` with a `let` [INFO] [stdout] = note: `#[warn(irrefutable_let_patterns)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: constant `UNIVERSAL_OFFSET` is never used [INFO] [stdout] --> src/main.rs:9:7 [INFO] [stdout] | [INFO] [stdout] 9 | const UNIVERSAL_OFFSET: usize = 0; [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: constant `P2_WIN_TEST_MOVES_3` is never used [INFO] [stdout] --> src/main.rs:25:7 [INFO] [stdout] | [INFO] [stdout] 25 | const P2_WIN_TEST_MOVES_3: [usize; 34] = [ [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `debug_board` is never used [INFO] [stdout] --> src/main.rs:180:4 [INFO] [stdout] | [INFO] [stdout] 180 | fn debug_board(board: &[[&str; 7]; 6]) { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `matches` is never used [INFO] [stdout] --> src/main.rs:192:4 [INFO] [stdout] | [INFO] [stdout] 192 | fn matches(buffer: &[String; LINES_OF_OUTPUT], board: &[[&str; 7]; 6]) -> bool { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `debug` is never used [INFO] [stdout] --> src/main.rs:218:4 [INFO] [stdout] | [INFO] [stdout] 218 | fn debug(buffer: &[String; LINES_OF_OUTPUT]) { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `count_matches` is never used [INFO] [stdout] --> src/main.rs:225:4 [INFO] [stdout] | [INFO] [stdout] 225 | fn count_matches(buffer: &str, substring: &str) -> usize { [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:105:13 [INFO] [stdout] | [INFO] [stdout] 105 | stdout_reader.read_line(&mut buffer[output_line]).await; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 105 | let _ = stdout_reader.read_line(&mut buffer[output_line]).await; [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:118:9 [INFO] [stdout] | [INFO] [stdout] 118 | / stdin [INFO] [stdout] 119 | | .write_all(format!("{}\n", input[i] - INPUT_OFFSET).as_bytes()) [INFO] [stdout] 120 | | .await; [INFO] [stdout] | |__________________^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 118 | let _ = stdin [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:129:9 [INFO] [stdout] | [INFO] [stdout] 129 | stdout_reader.read_line(&mut buffer[output_line]).await; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 129 | let _ = stdout_reader.read_line(&mut buffer[output_line]).await; [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 10 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.20s [INFO] running `Command { std: "docker" "inspect" "6d580b90db99e49e7a7ba1c41fd62874a2490f387ceaad5abeccc851ddae14c4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "6d580b90db99e49e7a7ba1c41fd62874a2490f387ceaad5abeccc851ddae14c4", kill_on_drop: false }` [INFO] [stdout] 6d580b90db99e49e7a7ba1c41fd62874a2490f387ceaad5abeccc851ddae14c4