[INFO] cloning repository https://github.com/akgvn/graderr
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/akgvn/graderr" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fakgvn%2Fgraderr", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fakgvn%2Fgraderr'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d22e6b425b3fc995de241fdb8c32d0592d69aa1c
[INFO] checking akgvn/graderr against beta for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fakgvn%2Fgraderr" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/akgvn/graderr on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/akgvn/graderr
[INFO] finished tweaking git repo https://github.com/akgvn/graderr
[INFO] tweaked toml for git repo https://github.com/akgvn/graderr written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/akgvn/graderr already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 023ff86f76cb86c30d28d4ec197855058207f2bf25252340149ee6adefcdc9f1
[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" "023ff86f76cb86c30d28d4ec197855058207f2bf25252340149ee6adefcdc9f1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "023ff86f76cb86c30d28d4ec197855058207f2bf25252340149ee6adefcdc9f1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "023ff86f76cb86c30d28d4ec197855058207f2bf25252340149ee6adefcdc9f1", kill_on_drop: false }`
[INFO] [stdout] 023ff86f76cb86c30d28d4ec197855058207f2bf25252340149ee6adefcdc9f1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b9cdd54ba004006ed41578ec3de0cf8242c3eff12bfe9de7d87b22cfe1a3a207
[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" "b9cdd54ba004006ed41578ec3de0cf8242c3eff12bfe9de7d87b22cfe1a3a207", kill_on_drop: false }`
[INFO] [stderr]     Checking grades v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/main.rs:100:5
[INFO] [stdout]     |
[INFO] [stdout] 99  |     todo!();
[INFO] [stdout]     |     -------- any code following this expression is unreachable
[INFO] [stdout] 100 |     (ac, ag)
[INFO] [stdout]     |     ^^^^^^^^ unreachable expression
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ac`
[INFO] [stdout]   --> src/main.rs:93:9
[INFO] [stdout]    |
[INFO] [stdout] 93 |     let ac: u32; // additional credits can be 3 or 4
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_ac`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ag`
[INFO] [stdout]   --> src/main.rs:94:9
[INFO] [stdout]    |
[INFO] [stdout] 94 |     let ag: f32; // additional grades can be [0, 0.5, 1, ..., 3, 3.5, 4] (from FF to AA)
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_ag`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `left_hand_side`
[INFO] [stdout]   --> src/main.rs:96:9
[INFO] [stdout]    |
[INFO] [stdout] 96 |     let left_hand_side = gpa * tot_creds as f32;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_left_hand_side`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `right_hand_constant`
[INFO] [stdout]   --> src/main.rs:97:9
[INFO] [stdout]    |
[INFO] [stdout] 97 |     let right_hand_constant = goal * tot_creds as f32;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_right_hand_constant`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/main.rs:100:5
[INFO] [stdout]     |
[INFO] [stdout] 99  |     todo!();
[INFO] [stdout]     |     -------- any code following this expression is unreachable
[INFO] [stdout] 100 |     (ac, ag)
[INFO] [stdout]     |     ^^^^^^^^ unreachable expression
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ac`
[INFO] [stdout]   --> src/main.rs:93:9
[INFO] [stdout]    |
[INFO] [stdout] 93 |     let ac: u32; // additional credits can be 3 or 4
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_ac`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ag`
[INFO] [stdout]   --> src/main.rs:94:9
[INFO] [stdout]    |
[INFO] [stdout] 94 |     let ag: f32; // additional grades can be [0, 0.5, 1, ..., 3, 3.5, 4] (from FF to AA)
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_ag`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `left_hand_side`
[INFO] [stdout]   --> src/main.rs:96:9
[INFO] [stdout]    |
[INFO] [stdout] 96 |     let left_hand_side = gpa * tot_creds as f32;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_left_hand_side`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `right_hand_constant`
[INFO] [stdout]   --> src/main.rs:97:9
[INFO] [stdout]    |
[INFO] [stdout] 97 |     let right_hand_constant = goal * tot_creds as f32;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_right_hand_constant`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.47s
[INFO] running `Command { std: "docker" "inspect" "b9cdd54ba004006ed41578ec3de0cf8242c3eff12bfe9de7d87b22cfe1a3a207", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b9cdd54ba004006ed41578ec3de0cf8242c3eff12bfe9de7d87b22cfe1a3a207", kill_on_drop: false }`
[INFO] [stdout] b9cdd54ba004006ed41578ec3de0cf8242c3eff12bfe9de7d87b22cfe1a3a207