[INFO] cloning repository https://github.com/ryosukeeeee/rust_rdbms_scratch
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ryosukeeeee/rust_rdbms_scratch" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fryosukeeeee%2Frust_rdbms_scratch", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fryosukeeeee%2Frust_rdbms_scratch'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 98e53fe3065b2dd8f2f595b369e2ac25e9c3237c
[INFO] checking ryosukeeeee/rust_rdbms_scratch against master#507271bc119683008ec719ecee48814e8ac86c65 for pr-146440
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fryosukeeeee%2Frust_rdbms_scratch" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/ryosukeeeee/rust_rdbms_scratch
[INFO] finished tweaking git repo https://github.com/ryosukeeeee/rust_rdbms_scratch
[INFO] tweaked toml for git repo https://github.com/ryosukeeeee/rust_rdbms_scratch written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/ryosukeeeee/rust_rdbms_scratch on toolchain 507271bc119683008ec719ecee48814e8ac86c65
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+507271bc119683008ec719ecee48814e8ac86c65" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/ryosukeeeee/rust_rdbms_scratch 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" "+507271bc119683008ec719ecee48814e8ac86c65" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded syn v1.0.71
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+507271bc119683008ec719ecee48814e8ac86c65" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b2d8faaa14c8520a58407d3a50dae5305d7f7a42b5e861774f7af8dbbfcd801e
[INFO] running `Command { std: "docker" "start" "-a" "b2d8faaa14c8520a58407d3a50dae5305d7f7a42b5e861774f7af8dbbfcd801e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b2d8faaa14c8520a58407d3a50dae5305d7f7a42b5e861774f7af8dbbfcd801e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b2d8faaa14c8520a58407d3a50dae5305d7f7a42b5e861774f7af8dbbfcd801e", kill_on_drop: false }`
[INFO] [stdout] b2d8faaa14c8520a58407d3a50dae5305d7f7a42b5e861774f7af8dbbfcd801e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+507271bc119683008ec719ecee48814e8ac86c65" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5163b13e9b579d0053a01d14c6b17721c2ddaa95757ad10728fce913625b46e5
[INFO] running `Command { std: "docker" "start" "-a" "5163b13e9b579d0053a01d14c6b17721c2ddaa95757ad10728fce913625b46e5", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.71
[INFO] [stderr]    Compiling thiserror-impl v1.0.24
[INFO] [stderr]     Checking thiserror v1.0.24
[INFO] [stderr]     Checking rust_rdbms_practice v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `usage_count` and `buffer` are never read
[INFO] [stdout]   --> src/buffer.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub struct Frame {
[INFO] [stdout]    |            ----- fields in this struct
[INFO] [stdout] 26 |     usage_count: u64,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 27 |     buffer: Rc<Buffer>,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `next_victim_id` is never read
[INFO] [stdout]   --> src/buffer.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub struct BufferPool {
[INFO] [stdout]    |            ---------- field in this struct
[INFO] [stdout] 30 |     buffers: Vec<Frame>,
[INFO] [stdout] 31 |     next_victim_id: BufferId,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `size`, `evict`, and `increment_id` are never used
[INFO] [stdout]   --> src/buffer.rs:35:8
[INFO] [stdout]    |
[INFO] [stdout] 34 | impl BufferPool {
[INFO] [stdout]    | --------------- methods in this implementation
[INFO] [stdout] 35 |     fn size(&self) -> usize {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 39 |     fn evict(&mut self) -> Option<BufferId> {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 65 |     fn increment_id(&self, buffer_id: BufferId) -> BufferId {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `disk`, `pool`, and `page_table` are never read
[INFO] [stdout]   --> src/buffer.rs:85:5
[INFO] [stdout]    |
[INFO] [stdout] 84 | pub struct BufferPoolManager {
[INFO] [stdout]    |            ----------------- fields in this struct
[INFO] [stdout] 85 |     disk: DiskManager,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 86 |     pool: BufferPool,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 87 |     page_table: HashMap<PageId, BufferId>,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `fetch_page` is never used
[INFO] [stdout]   --> src/buffer.rs:91:8
[INFO] [stdout]    |
[INFO] [stdout] 90 | impl BufferPoolManager {
[INFO] [stdout]    | ---------------------- method in this implementation
[INFO] [stdout] 91 |     fn fetch_page(&mut self, page_id: PageId) -> Result<Rc<Buffer>, Error> {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `usage_count` and `buffer` are never read
[INFO] [stdout]   --> src/buffer.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub struct Frame {
[INFO] [stdout]    |            ----- fields in this struct
[INFO] [stdout] 26 |     usage_count: u64,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 27 |     buffer: Rc<Buffer>,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `next_victim_id` is never read
[INFO] [stdout]   --> src/buffer.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub struct BufferPool {
[INFO] [stdout]    |            ---------- field in this struct
[INFO] [stdout] 30 |     buffers: Vec<Frame>,
[INFO] [stdout] 31 |     next_victim_id: BufferId,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `size`, `evict`, and `increment_id` are never used
[INFO] [stdout]   --> src/buffer.rs:35:8
[INFO] [stdout]    |
[INFO] [stdout] 34 | impl BufferPool {
[INFO] [stdout]    | --------------- methods in this implementation
[INFO] [stdout] 35 |     fn size(&self) -> usize {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 39 |     fn evict(&mut self) -> Option<BufferId> {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 65 |     fn increment_id(&self, buffer_id: BufferId) -> BufferId {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `disk`, `pool`, and `page_table` are never read
[INFO] [stdout]   --> src/buffer.rs:85:5
[INFO] [stdout]    |
[INFO] [stdout] 84 | pub struct BufferPoolManager {
[INFO] [stdout]    |            ----------------- fields in this struct
[INFO] [stdout] 85 |     disk: DiskManager,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 86 |     pool: BufferPool,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 87 |     page_table: HashMap<PageId, BufferId>,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `fetch_page` is never used
[INFO] [stdout]   --> src/buffer.rs:91:8
[INFO] [stdout]    |
[INFO] [stdout] 90 | impl BufferPoolManager {
[INFO] [stdout]    | ---------------------- method in this implementation
[INFO] [stdout] 91 |     fn fetch_page(&mut self, page_id: PageId) -> Result<Rc<Buffer>, Error> {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.80s
[INFO] running `Command { std: "docker" "inspect" "5163b13e9b579d0053a01d14c6b17721c2ddaa95757ad10728fce913625b46e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5163b13e9b579d0053a01d14c6b17721c2ddaa95757ad10728fce913625b46e5", kill_on_drop: false }`
[INFO] [stdout] 5163b13e9b579d0053a01d14c6b17721c2ddaa95757ad10728fce913625b46e5
