[INFO] cloning repository https://github.com/tk3fftk/rust-mini-rdbms
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tk3fftk/rust-mini-rdbms" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftk3fftk%2Frust-mini-rdbms", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftk3fftk%2Frust-mini-rdbms'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4c84cb16c8a6ad0f368b5b7881a5f2f108c7bf44
[INFO] checking tk3fftk/rust-mini-rdbms against 1.95.0 for pr-155915
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftk3fftk%2Frust-mini-rdbms" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/tk3fftk/rust-mini-rdbms
[INFO] finished tweaking git repo https://github.com/tk3fftk/rust-mini-rdbms
[INFO] tweaked toml for git repo https://github.com/tk3fftk/rust-mini-rdbms written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/tk3fftk/rust-mini-rdbms on toolchain 1.95.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/tk3fftk/rust-mini-rdbms 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" "+1.95.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+1.95.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 802ef874034622dba591ab67adbc37141aa6e2abf888e0b877fc7e3ff1d88eba
[INFO] running `Command { std: "docker" "start" "-a" "802ef874034622dba591ab67adbc37141aa6e2abf888e0b877fc7e3ff1d88eba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "802ef874034622dba591ab67adbc37141aa6e2abf888e0b877fc7e3ff1d88eba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "802ef874034622dba591ab67adbc37141aa6e2abf888e0b877fc7e3ff1d88eba", kill_on_drop: false }`
[INFO] [stdout] 802ef874034622dba591ab67adbc37141aa6e2abf888e0b877fc7e3ff1d88eba
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+1.95.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] aaaa488733c85dd366a22e264228f3dc8a5ab004195c6515a9ae19be9e6aaaf3
[INFO] running `Command { std: "docker" "start" "-a" "aaaa488733c85dd366a22e264228f3dc8a5ab004195c6515a9ae19be9e6aaaf3", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-ident v1.0.6
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling thiserror v1.0.38
[INFO] [stderr]    Compiling proc-macro2 v1.0.51
[INFO] [stderr]    Compiling quote v1.0.23
[INFO] [stderr]    Compiling thiserror-impl v1.0.38
[INFO] [stderr]     Checking rust_mini_rdbms v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Error`
[INFO] [stdout]  --> src/main.rs:4:15
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::io::{Error, Read, Seek, SeekFrom, Write};
[INFO] [stdout]   |               ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (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:222:9
[INFO] [stdout]     |
[INFO] [stdout] 222 |     let mut bufmgr = BufferPoolManager::new(disk, pool);
[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: unused variable: `bufmgr`
[INFO] [stdout]    --> src/main.rs:222:9
[INFO] [stdout]     |
[INFO] [stdout] 222 |     let mut bufmgr = BufferPoolManager::new(disk, pool);
[INFO] [stdout]     |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_bufmgr`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `usage_count` and `buffer` are never read
[INFO] [stdout]   --> src/main.rs:97:5
[INFO] [stdout]    |
[INFO] [stdout] 96 | pub struct Frame {
[INFO] [stdout]    |            ----- fields in this struct
[INFO] [stdout] 97 |     usage_count: u64,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 98 |     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/main.rs:102:5
[INFO] [stdout]     |
[INFO] [stdout] 100 | pub struct BufferPool {
[INFO] [stdout]     |            ---------- field in this struct
[INFO] [stdout] 101 |     buffers: Vec<Frame>,
[INFO] [stdout] 102 |     next_victim_id: BufferId,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `evict`, `increment_id`, and `size` are never used
[INFO] [stdout]    --> src/main.rs:116:8
[INFO] [stdout]     |
[INFO] [stdout] 105 | impl BufferPool {
[INFO] [stdout]     | --------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 116 |     fn evict(&mut self) -> Option<BufferId> {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 142 |     fn increment_id(&self, buffer_id: BufferId) -> BufferId {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 146 |     fn size(&self) -> usize {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `disk`, `pool`, and `page_table` are never read
[INFO] [stdout]    --> src/main.rs:166:5
[INFO] [stdout]     |
[INFO] [stdout] 165 | pub struct BufferPoolManager {
[INFO] [stdout]     |            ----------------- fields in this struct
[INFO] [stdout] 166 |     disk: DiskManager,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout] 167 |     pool: BufferPool,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout] 168 |     page_table: HashMap<PageId, BufferId>,
[INFO] [stdout]     |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `fetch_page` is never used
[INFO] [stdout]    --> src/main.rs:181:8
[INFO] [stdout]     |
[INFO] [stdout] 171 | impl BufferPoolManager {
[INFO] [stdout]     | ---------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 181 |     fn fetch_page(&mut self, page_id: PageId) -> Result<Rc<Buffer>, MyError> {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `prev_page_id` and `next_page_id` are never read
[INFO] [stdout]    --> src/main.rs:214:5
[INFO] [stdout]     |
[INFO] [stdout] 213 | pub struct Header {
[INFO] [stdout]     |            ------ fields in this struct
[INFO] [stdout] 214 |     prev_page_id: PageId,
[INFO] [stdout]     |     ^^^^^^^^^^^^
[INFO] [stdout] 215 |     next_page_id: PageId,
[INFO] [stdout]     |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Error`
[INFO] [stdout]  --> src/main.rs:4:15
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::io::{Error, Read, Seek, SeekFrom, Write};
[INFO] [stdout]   |               ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (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:222:9
[INFO] [stdout]     |
[INFO] [stdout] 222 |     let mut bufmgr = BufferPoolManager::new(disk, pool);
[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: unused variable: `bufmgr`
[INFO] [stdout]    --> src/main.rs:222:9
[INFO] [stdout]     |
[INFO] [stdout] 222 |     let mut bufmgr = BufferPoolManager::new(disk, pool);
[INFO] [stdout]     |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_bufmgr`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `usage_count` and `buffer` are never read
[INFO] [stdout]   --> src/main.rs:97:5
[INFO] [stdout]    |
[INFO] [stdout] 96 | pub struct Frame {
[INFO] [stdout]    |            ----- fields in this struct
[INFO] [stdout] 97 |     usage_count: u64,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 98 |     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/main.rs:102:5
[INFO] [stdout]     |
[INFO] [stdout] 100 | pub struct BufferPool {
[INFO] [stdout]     |            ---------- field in this struct
[INFO] [stdout] 101 |     buffers: Vec<Frame>,
[INFO] [stdout] 102 |     next_victim_id: BufferId,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `evict`, `increment_id`, and `size` are never used
[INFO] [stdout]    --> src/main.rs:116:8
[INFO] [stdout]     |
[INFO] [stdout] 105 | impl BufferPool {
[INFO] [stdout]     | --------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 116 |     fn evict(&mut self) -> Option<BufferId> {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 142 |     fn increment_id(&self, buffer_id: BufferId) -> BufferId {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 146 |     fn size(&self) -> usize {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `disk`, `pool`, and `page_table` are never read
[INFO] [stdout]    --> src/main.rs:166:5
[INFO] [stdout]     |
[INFO] [stdout] 165 | pub struct BufferPoolManager {
[INFO] [stdout]     |            ----------------- fields in this struct
[INFO] [stdout] 166 |     disk: DiskManager,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout] 167 |     pool: BufferPool,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout] 168 |     page_table: HashMap<PageId, BufferId>,
[INFO] [stdout]     |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `fetch_page` is never used
[INFO] [stdout]    --> src/main.rs:181:8
[INFO] [stdout]     |
[INFO] [stdout] 171 | impl BufferPoolManager {
[INFO] [stdout]     | ---------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 181 |     fn fetch_page(&mut self, page_id: PageId) -> Result<Rc<Buffer>, MyError> {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `prev_page_id` and `next_page_id` are never read
[INFO] [stdout]    --> src/main.rs:214:5
[INFO] [stdout]     |
[INFO] [stdout] 213 | pub struct Header {
[INFO] [stdout]     |            ------ fields in this struct
[INFO] [stdout] 214 |     prev_page_id: PageId,
[INFO] [stdout]     |     ^^^^^^^^^^^^
[INFO] [stdout] 215 |     next_page_id: PageId,
[INFO] [stdout]     |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.03s
[INFO] running `Command { std: "docker" "inspect" "aaaa488733c85dd366a22e264228f3dc8a5ab004195c6515a9ae19be9e6aaaf3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aaaa488733c85dd366a22e264228f3dc8a5ab004195c6515a9ae19be9e6aaaf3", kill_on_drop: false }`
[INFO] [stdout] aaaa488733c85dd366a22e264228f3dc8a5ab004195c6515a9ae19be9e6aaaf3
