[INFO] cloning repository https://github.com/PhiDung-hub/Grind75-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/PhiDung-hub/Grind75-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPhiDung-hub%2FGrind75-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPhiDung-hub%2FGrind75-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e14110697e5102454c2fb66391a725df120a43c5
[INFO] checking PhiDung-hub/Grind75-rs against master#22572d0994593197593e2a1b7b18d720a9a349a7 for pr-126452-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPhiDung-hub%2FGrind75-rs" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/PhiDung-hub/Grind75-rs on toolchain 22572d0994593197593e2a1b7b18d720a9a349a7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/PhiDung-hub/Grind75-rs
[INFO] finished tweaking git repo https://github.com/PhiDung-hub/Grind75-rs
[INFO] tweaked toml for git repo https://github.com/PhiDung-hub/Grind75-rs written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/PhiDung-hub/Grind75-rs 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" "+22572d0994593197593e2a1b7b18d720a9a349a7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e1724b86647ac4951def61b12b8c3900551412e389fa9f2a0f98669dff8957f4
[INFO] running `Command { std: "docker" "start" "-a" "e1724b86647ac4951def61b12b8c3900551412e389fa9f2a0f98669dff8957f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e1724b86647ac4951def61b12b8c3900551412e389fa9f2a0f98669dff8957f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e1724b86647ac4951def61b12b8c3900551412e389fa9f2a0f98669dff8957f4", kill_on_drop: false }`
[INFO] [stdout] e1724b86647ac4951def61b12b8c3900551412e389fa9f2a0f98669dff8957f4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6ae82269df2e80ad407c1a5a0e139464061d9b2a94ebea3070db452b633a60f3
[INFO] running `Command { std: "docker" "start" "-a" "6ae82269df2e80ad407c1a5a0e139464061d9b2a94ebea3070db452b633a60f3", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.144
[INFO] [stderr]    Compiling crossbeam-utils v0.8.15
[INFO] [stderr]    Compiling memoffset v0.8.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.14
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling rayon-core v1.11.0
[INFO] [stderr]    Compiling num-bigint v0.4.3
[INFO] [stderr]     Checking regex-syntax v0.7.1
[INFO] [stderr]     Checking either v1.8.1
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking scoped_threadpool v0.1.9
[INFO] [stderr]     Checking crossbeam-channel v0.5.8
[INFO] [stderr]     Checking crossbeam-deque v0.8.3
[INFO] [stderr]     Checking getrandom v0.2.10
[INFO] [stderr]     Checking num_cpus v1.15.0
[INFO] [stderr]     Checking aho-corasick v1.0.1
[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 rayon v1.7.0
[INFO] [stderr]     Checking regex v1.8.1
[INFO] [stderr]     Checking algo_practise v1.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]   --> src/grind75/week6/extra_meeting_room_assignment.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     todo!();
[INFO] [stdout]    |     ------- any code following this expression is unreachable
[INFO] [stdout] 15 |     let mut to_be_assigned = BinaryHeap::new();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]   --> src/grind75/week6/extra_meeting_room_assignment.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     todo!();
[INFO] [stdout]    |     ------- any code following this expression is unreachable
[INFO] [stdout] 15 |     let mut to_be_assigned = BinaryHeap::new();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.64s
[INFO] running `Command { std: "docker" "inspect" "6ae82269df2e80ad407c1a5a0e139464061d9b2a94ebea3070db452b633a60f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6ae82269df2e80ad407c1a5a0e139464061d9b2a94ebea3070db452b633a60f3", kill_on_drop: false }`
[INFO] [stdout] 6ae82269df2e80ad407c1a5a0e139464061d9b2a94ebea3070db452b633a60f3
[INFO] checking PhiDung-hub/Grind75-rs against try#6289438dbad80b1a0029c66dd3f6abf57c2c51be for pr-126452-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPhiDung-hub%2FGrind75-rs" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/PhiDung-hub/Grind75-rs on toolchain 6289438dbad80b1a0029c66dd3f6abf57c2c51be
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/PhiDung-hub/Grind75-rs
[INFO] finished tweaking git repo https://github.com/PhiDung-hub/Grind75-rs
[INFO] tweaked toml for git repo https://github.com/PhiDung-hub/Grind75-rs written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/PhiDung-hub/Grind75-rs 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" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 36227a55e3656115f535c827fdce19a78d2798d4569a078348545953b6ac51cf
[INFO] running `Command { std: "docker" "start" "-a" "36227a55e3656115f535c827fdce19a78d2798d4569a078348545953b6ac51cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "36227a55e3656115f535c827fdce19a78d2798d4569a078348545953b6ac51cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "36227a55e3656115f535c827fdce19a78d2798d4569a078348545953b6ac51cf", kill_on_drop: false }`
[INFO] [stdout] 36227a55e3656115f535c827fdce19a78d2798d4569a078348545953b6ac51cf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 647b05a90029a487ee906e35833f33567409cc3fe7bca3864de88e3e8b8a74a3
[INFO] running `Command { std: "docker" "start" "-a" "647b05a90029a487ee906e35833f33567409cc3fe7bca3864de88e3e8b8a74a3", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.144
[INFO] [stderr]    Compiling crossbeam-utils v0.8.15
[INFO] [stderr]    Compiling memoffset v0.8.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.14
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling rayon-core v1.11.0
[INFO] [stderr]    Compiling num-bigint v0.4.3
[INFO] [stderr]     Checking regex-syntax v0.7.1
[INFO] [stderr]     Checking either v1.8.1
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking scoped_threadpool v0.1.9
[INFO] [stderr]     Checking crossbeam-channel v0.5.8
[INFO] [stderr]     Checking crossbeam-deque v0.8.3
[INFO] [stderr]     Checking getrandom v0.2.10
[INFO] [stderr]     Checking num_cpus v1.15.0
[INFO] [stderr]     Checking aho-corasick v1.0.1
[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 rayon v1.7.0
[INFO] [stderr]     Checking regex v1.8.1
[INFO] [stderr]     Checking algo_practise v1.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]   --> src/grind75/week6/extra_meeting_room_assignment.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     todo!();
[INFO] [stdout]    |     ------- any code following this expression is unreachable
[INFO] [stdout] 15 |     let mut to_be_assigned = BinaryHeap::new();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]   --> src/grind75/week6/extra_meeting_room_assignment.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     todo!();
[INFO] [stdout]    |     ------- any code following this expression is unreachable
[INFO] [stdout] 15 |     let mut to_be_assigned = BinaryHeap::new();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.52s
[INFO] running `Command { std: "docker" "inspect" "647b05a90029a487ee906e35833f33567409cc3fe7bca3864de88e3e8b8a74a3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "647b05a90029a487ee906e35833f33567409cc3fe7bca3864de88e3e8b8a74a3", kill_on_drop: false }`
[INFO] [stdout] 647b05a90029a487ee906e35833f33567409cc3fe7bca3864de88e3e8b8a74a3