[INFO] cloning repository https://github.com/beersonthewall/TurtleDB
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/beersonthewall/TurtleDB" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbeersonthewall%2FTurtleDB", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbeersonthewall%2FTurtleDB'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 03283635198b08f205af62880fcd7c3a6e628124
[INFO] checking beersonthewall/TurtleDB against master#33fdb797f59421c7bbecaa4588ed5d7a31a9494a for pr-87190-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbeersonthewall%2FTurtleDB" "/workspace/builds/worker-50/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-50/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/beersonthewall/TurtleDB on toolchain 33fdb797f59421c7bbecaa4588ed5d7a31a9494a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/beersonthewall/TurtleDB
[INFO] finished tweaking git repo https://github.com/beersonthewall/TurtleDB
[INFO] tweaked toml for git repo https://github.com/beersonthewall/TurtleDB written to /workspace/builds/worker-50/source/Cargo.toml
[INFO] crate git repo https://github.com/beersonthewall/TurtleDB already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-50/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-50/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a4b5fd0eb6c43f7df46900d9c67a740d35599374c5b8ffa62e4b2ecaa99dc0aa
[INFO] running `Command { std: "docker" "start" "-a" "a4b5fd0eb6c43f7df46900d9c67a740d35599374c5b8ffa62e4b2ecaa99dc0aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a4b5fd0eb6c43f7df46900d9c67a740d35599374c5b8ffa62e4b2ecaa99dc0aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a4b5fd0eb6c43f7df46900d9c67a740d35599374c5b8ffa62e4b2ecaa99dc0aa", kill_on_drop: false }`
[INFO] [stdout] a4b5fd0eb6c43f7df46900d9c67a740d35599374c5b8ffa62e4b2ecaa99dc0aa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-50/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-50/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f758827cf8c788e9682b3b2b5b7489e9fe773af403ee9d9988020de99cc919c9
[INFO] running `Command { std: "docker" "start" "-a" "f758827cf8c788e9682b3b2b5b7489e9fe773af403ee9d9988020de99cc919c9", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking TurtleDB v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lib.rs:11:13
[INFO] [stdout]    |
[INFO] [stdout] 11 |         let mut storage_engine = StorageEngine::new();
[INFO] [stdout]    |             ----^^^^^^^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `files`
[INFO] [stdout]   --> src/storage/disk.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     files: RwLock<HashMap<FileKey, Mutex<File>>>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `counter`
[INFO] [stdout]   --> src/storage/disk.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     counter: AtomicUsize,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `read_block`
[INFO] [stdout]   --> src/storage/disk.rs:28:31
[INFO] [stdout]    |
[INFO] [stdout] 28 |     pub(in crate::storage) fn read_block(
[INFO] [stdout]    |                               ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `write_block`
[INFO] [stdout]   --> src/storage/disk.rs:48:31
[INFO] [stdout]    |
[INFO] [stdout] 48 |     pub(in crate::storage) fn write_block(
[INFO] [stdout]    |                               ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `open_file`
[INFO] [stdout]   --> src/storage/disk.rs:68:12
[INFO] [stdout]    |
[INFO] [stdout] 68 |     pub fn open_file(&mut self, filename: PathBuf) -> Result<FileKey> {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `blocks`
[INFO] [stdout]  --> src/storage/pool.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     blocks: Vec<Block>,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_free_block`
[INFO] [stdout]   --> src/storage/pool.rs:21:31
[INFO] [stdout]    |
[INFO] [stdout] 21 |     pub(in crate::storage) fn get_free_block(&mut self) -> Option<Block> {
[INFO] [stdout]    |                               ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `free_block`
[INFO] [stdout]   --> src/storage/pool.rs:25:31
[INFO] [stdout]    |
[INFO] [stdout] 25 |     pub(in crate::storage) fn free_block(&mut self, block: Block) {
[INFO] [stdout]    |                               ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `PageId`
[INFO] [stdout]   --> src/storage/mod.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub type PageId = u64;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `buffer_pool`
[INFO] [stdout]   --> src/storage/mod.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 |     buffer_pool: BufferPool,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `disk_manager`
[INFO] [stdout]   --> src/storage/mod.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     disk_manager: DiskManager,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `init_data_directory`
[INFO] [stdout]   --> src/storage/mod.rs:35:12
[INFO] [stdout]    |
[INFO] [stdout] 35 |     pub fn init_data_directory(&mut self, data_dir: PathBuf) -> FileKey {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `storage`
[INFO] [stdout]  --> src/lib.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     storage: StorageEngine,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lib.rs:11:13
[INFO] [stdout]    |
[INFO] [stdout] 11 |         let mut storage_engine = StorageEngine::new();
[INFO] [stdout]    |             ----^^^^^^^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 14 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `files`
[INFO] [stdout]   --> src/storage/disk.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     files: RwLock<HashMap<FileKey, Mutex<File>>>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `counter`
[INFO] [stdout]   --> src/storage/disk.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     counter: AtomicUsize,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `read_block`
[INFO] [stdout]   --> src/storage/disk.rs:28:31
[INFO] [stdout]    |
[INFO] [stdout] 28 |     pub(in crate::storage) fn read_block(
[INFO] [stdout]    |                               ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `write_block`
[INFO] [stdout]   --> src/storage/disk.rs:48:31
[INFO] [stdout]    |
[INFO] [stdout] 48 |     pub(in crate::storage) fn write_block(
[INFO] [stdout]    |                               ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `open_file`
[INFO] [stdout]   --> src/storage/disk.rs:68:12
[INFO] [stdout]    |
[INFO] [stdout] 68 |     pub fn open_file(&mut self, filename: PathBuf) -> Result<FileKey> {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `blocks`
[INFO] [stdout]  --> src/storage/pool.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     blocks: Vec<Block>,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_free_block`
[INFO] [stdout]   --> src/storage/pool.rs:21:31
[INFO] [stdout]    |
[INFO] [stdout] 21 |     pub(in crate::storage) fn get_free_block(&mut self) -> Option<Block> {
[INFO] [stdout]    |                               ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `free_block`
[INFO] [stdout]   --> src/storage/pool.rs:25:31
[INFO] [stdout]    |
[INFO] [stdout] 25 |     pub(in crate::storage) fn free_block(&mut self, block: Block) {
[INFO] [stdout]    |                               ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `PageId`
[INFO] [stdout]   --> src/storage/mod.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub type PageId = u64;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `buffer_pool`
[INFO] [stdout]   --> src/storage/mod.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 |     buffer_pool: BufferPool,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `disk_manager`
[INFO] [stdout]   --> src/storage/mod.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     disk_manager: DiskManager,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `init_data_directory`
[INFO] [stdout]   --> src/storage/mod.rs:35:12
[INFO] [stdout]    |
[INFO] [stdout] 35 |     pub fn init_data_directory(&mut self, data_dir: PathBuf) -> FileKey {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `storage`
[INFO] [stdout]  --> src/lib.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     storage: StorageEngine,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.78s
[INFO] [stdout] warning: 14 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "f758827cf8c788e9682b3b2b5b7489e9fe773af403ee9d9988020de99cc919c9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f758827cf8c788e9682b3b2b5b7489e9fe773af403ee9d9988020de99cc919c9", kill_on_drop: false }`
[INFO] [stdout] f758827cf8c788e9682b3b2b5b7489e9fe773af403ee9d9988020de99cc919c9