[INFO] cloning repository https://github.com/nannany/didactic-funicular
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/nannany/didactic-funicular" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnannany%2Fdidactic-funicular", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnannany%2Fdidactic-funicular'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 78ac7f18013776b48011dbdfd3181076afbcbabe
[INFO] testing nannany/didactic-funicular against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnannany%2Fdidactic-funicular" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/nannany/didactic-funicular on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/nannany/didactic-funicular
[INFO] finished tweaking git repo https://github.com/nannany/didactic-funicular
[INFO] tweaked toml for git repo https://github.com/nannany/didactic-funicular written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/nannany/didactic-funicular already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded zerocopy v0.6.1
[INFO] [stderr]   Downloaded zerocopy-derive v0.3.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 1bad098ed87121f33bf7617e576ae9c41dd2d533e1f355b65a50a072764e4d44
[INFO] running `Command { std: "docker" "start" "-a" "1bad098ed87121f33bf7617e576ae9c41dd2d533e1f355b65a50a072764e4d44", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1bad098ed87121f33bf7617e576ae9c41dd2d533e1f355b65a50a072764e4d44", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1bad098ed87121f33bf7617e576ae9c41dd2d533e1f355b65a50a072764e4d44", kill_on_drop: false }`
[INFO] [stdout] 1bad098ed87121f33bf7617e576ae9c41dd2d533e1f355b65a50a072764e4d44
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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=warn" "-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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] edaaeaeee36aba0dd377721fc54459b9ed2e3e591bb8a9cd3503d22ec8a223fb
[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" "edaaeaeee36aba0dd377721fc54459b9ed2e3e591bb8a9cd3503d22ec8a223fb", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.86
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]    Compiling anyhow v1.0.55
[INFO] [stderr]    Compiling byteorder v1.4.3
[INFO] [stderr]    Compiling synstructure v0.12.6
[INFO] [stderr]    Compiling serde_derive v1.0.136
[INFO] [stderr]    Compiling zerocopy-derive v0.3.1
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]    Compiling zerocopy v0.6.1
[INFO] [stderr]    Compiling thiserror v1.0.30
[INFO] [stderr]    Compiling bincode v1.3.3
[INFO] [stderr]    Compiling didactic-funicular v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct is never constructed: `DiskManager`
[INFO] [stdout]   --> src/disk.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct DiskManager {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `valid`
[INFO] [stdout]   --> src/disk.rs:21:12
[INFO] [stdout]    |
[INFO] [stdout] 21 |     pub fn valid(self) -> Option<PageId> {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `to_u64`
[INFO] [stdout]   --> src/disk.rs:28:12
[INFO] [stdout]    |
[INFO] [stdout] 28 |     pub fn to_u64(self) -> u64 {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/disk.rs:53:12
[INFO] [stdout]    |
[INFO] [stdout] 53 |     pub fn new(heap_file: File) -> io::Result<Self> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `open`
[INFO] [stdout]   --> src/disk.rs:62:12
[INFO] [stdout]    |
[INFO] [stdout] 62 |     pub fn open(heap_file_path: impl AsRef<Path>) -> io::Result<Self> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `allocate_page`
[INFO] [stdout]   --> src/disk.rs:71:12
[INFO] [stdout]    |
[INFO] [stdout] 71 |     pub fn allocate_page(&mut self) -> PageId {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `read_page_data`
[INFO] [stdout]   --> src/disk.rs:78:12
[INFO] [stdout]    |
[INFO] [stdout] 78 |     pub fn read_page_data(&mut self, page_id: PageId, data: &mut [u8]) -> io::Result<()> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `write_page_data`
[INFO] [stdout]   --> src/disk.rs:87:12
[INFO] [stdout]    |
[INFO] [stdout] 87 |     pub fn write_page_data(&mut self, page_id: PageId, data: &mut [u8]) -> io::Result<()> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `sync`
[INFO] [stdout]   --> src/disk.rs:96:12
[INFO] [stdout]    |
[INFO] [stdout] 96 |     pub fn sync(&mut self) -> io::Result<()> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `NoFreeBuffer`
[INFO] [stdout]   --> src/buffer.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     NoFreeBuffer,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `Error` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/buffer.rs:9:10
[INFO] [stdout]    |
[INFO] [stdout] 9  | #[derive(Debug, thiserror::Error)]
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `usage_count`
[INFO] [stdout]   --> src/buffer.rs:41:5
[INFO] [stdout]    |
[INFO] [stdout] 41 |     usage_count: u64,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `Frame` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/buffer.rs:39:10
[INFO] [stdout]    |
[INFO] [stdout] 39 | #[derive(Debug, Default)]
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `buffer`
[INFO] [stdout]   --> src/buffer.rs:42:5
[INFO] [stdout]    |
[INFO] [stdout] 42 |     buffer: Rc<Buffer>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `Frame` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/buffer.rs:39:10
[INFO] [stdout]    |
[INFO] [stdout] 39 | #[derive(Debug, Default)]
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `next_victim_id`
[INFO] [stdout]   --> src/buffer.rs:47:5
[INFO] [stdout]    |
[INFO] [stdout] 47 |     next_victim_id: BufferId,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/buffer.rs:51:12
[INFO] [stdout]    |
[INFO] [stdout] 51 |     pub fn new(pool_size: usize) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `size`
[INFO] [stdout]   --> src/buffer.rs:61:8
[INFO] [stdout]    |
[INFO] [stdout] 61 |     fn size(&self) -> usize {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `evict`
[INFO] [stdout]   --> src/buffer.rs:65:8
[INFO] [stdout]    |
[INFO] [stdout] 65 |     fn evict(&mut self) -> Option<BufferId> {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `increment_id`
[INFO] [stdout]   --> src/buffer.rs:91:8
[INFO] [stdout]    |
[INFO] [stdout] 91 |     fn increment_id(&self, buffer_id: BufferId) -> BufferId {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `BufferPoolManager`
[INFO] [stdout]    --> src/buffer.rs:110:12
[INFO] [stdout]     |
[INFO] [stdout] 110 | pub struct BufferPoolManager {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> src/buffer.rs:117:12
[INFO] [stdout]     |
[INFO] [stdout] 117 |     pub fn new(disk: DiskManager, pool: BufferPool) -> Self {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `fetch_page`
[INFO] [stdout]    --> src/buffer.rs:122:12
[INFO] [stdout]     |
[INFO] [stdout] 122 |     pub fn fetch_page(&mut self, page_id: PageId) -> Result<Rc<Buffer>, Error> {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `create_page`
[INFO] [stdout]    --> src/buffer.rs:149:12
[INFO] [stdout]     |
[INFO] [stdout] 149 |     pub fn create_page(&mut self) -> Result<Rc<Buffer>, Error> {
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `flush`
[INFO] [stdout]    --> src/buffer.rs:172:12
[INFO] [stdout]     |
[INFO] [stdout] 172 |     pub fn flush(&mut self) -> Result<(), Error> {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 22 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 43.01s
[INFO] running `Command { std: "docker" "inspect" "edaaeaeee36aba0dd377721fc54459b9ed2e3e591bb8a9cd3503d22ec8a223fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "edaaeaeee36aba0dd377721fc54459b9ed2e3e591bb8a9cd3503d22ec8a223fb", kill_on_drop: false }`
[INFO] [stdout] edaaeaeee36aba0dd377721fc54459b9ed2e3e591bb8a9cd3503d22ec8a223fb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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=warn" "-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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6e48fe78cc6002be85ce90e358c56cf2ecaf0614390e29b832265b0bf61b47b4
[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" "6e48fe78cc6002be85ce90e358c56cf2ecaf0614390e29b832265b0bf61b47b4", kill_on_drop: false }`
[INFO] [stderr]    Compiling typenum v1.15.0
[INFO] [stderr]    Compiling cpufeatures v0.2.2
[INFO] [stderr]    Compiling generic-array v0.14.5
[INFO] [stderr]    Compiling block-buffer v0.9.0
[INFO] [stderr]    Compiling digest v0.9.0
[INFO] [stderr]    Compiling sha-1 v0.9.8
[INFO] [stderr]    Compiling md-5 v0.9.1
[INFO] [stderr]    Compiling didactic-funicular v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved import `tempfile`
[INFO] [stdout]    --> src/btree.rs:286:9
[INFO] [stdout]     |
[INFO] [stdout] 286 |     use tempfile::tempfile;
[INFO] [stdout]     |         ^^^^^^^^ use of undeclared crate or module `tempfile`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `DiskManager`
[INFO] [stdout]   --> src/disk.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct DiskManager {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `valid`
[INFO] [stdout]   --> src/disk.rs:21:12
[INFO] [stdout]    |
[INFO] [stdout] 21 |     pub fn valid(self) -> Option<PageId> {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `to_u64`
[INFO] [stdout]   --> src/disk.rs:28:12
[INFO] [stdout]    |
[INFO] [stdout] 28 |     pub fn to_u64(self) -> u64 {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/disk.rs:53:12
[INFO] [stdout]    |
[INFO] [stdout] 53 |     pub fn new(heap_file: File) -> io::Result<Self> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `open`
[INFO] [stdout]   --> src/disk.rs:62:12
[INFO] [stdout]    |
[INFO] [stdout] 62 |     pub fn open(heap_file_path: impl AsRef<Path>) -> io::Result<Self> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `allocate_page`
[INFO] [stdout]   --> src/disk.rs:71:12
[INFO] [stdout]    |
[INFO] [stdout] 71 |     pub fn allocate_page(&mut self) -> PageId {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `read_page_data`
[INFO] [stdout]   --> src/disk.rs:78:12
[INFO] [stdout]    |
[INFO] [stdout] 78 |     pub fn read_page_data(&mut self, page_id: PageId, data: &mut [u8]) -> io::Result<()> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `write_page_data`
[INFO] [stdout]   --> src/disk.rs:87:12
[INFO] [stdout]    |
[INFO] [stdout] 87 |     pub fn write_page_data(&mut self, page_id: PageId, data: &mut [u8]) -> io::Result<()> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `sync`
[INFO] [stdout]   --> src/disk.rs:96:12
[INFO] [stdout]    |
[INFO] [stdout] 96 |     pub fn sync(&mut self) -> io::Result<()> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `NoFreeBuffer`
[INFO] [stdout]   --> src/buffer.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     NoFreeBuffer,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `Error` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/buffer.rs:9:10
[INFO] [stdout]    |
[INFO] [stdout] 9  | #[derive(Debug, thiserror::Error)]
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `usage_count`
[INFO] [stdout]   --> src/buffer.rs:41:5
[INFO] [stdout]    |
[INFO] [stdout] 41 |     usage_count: u64,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `Frame` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/buffer.rs:39:10
[INFO] [stdout]    |
[INFO] [stdout] 39 | #[derive(Debug, Default)]
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `buffer`
[INFO] [stdout]   --> src/buffer.rs:42:5
[INFO] [stdout]    |
[INFO] [stdout] 42 |     buffer: Rc<Buffer>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `Frame` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/buffer.rs:39:10
[INFO] [stdout]    |
[INFO] [stdout] 39 | #[derive(Debug, Default)]
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `next_victim_id`
[INFO] [stdout]   --> src/buffer.rs:47:5
[INFO] [stdout]    |
[INFO] [stdout] 47 |     next_victim_id: BufferId,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/buffer.rs:51:12
[INFO] [stdout]    |
[INFO] [stdout] 51 |     pub fn new(pool_size: usize) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `size`
[INFO] [stdout]   --> src/buffer.rs:61:8
[INFO] [stdout]    |
[INFO] [stdout] 61 |     fn size(&self) -> usize {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `evict`
[INFO] [stdout]   --> src/buffer.rs:65:8
[INFO] [stdout]    |
[INFO] [stdout] 65 |     fn evict(&mut self) -> Option<BufferId> {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `increment_id`
[INFO] [stdout]   --> src/buffer.rs:91:8
[INFO] [stdout]    |
[INFO] [stdout] 91 |     fn increment_id(&self, buffer_id: BufferId) -> BufferId {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `BufferPoolManager`
[INFO] [stdout]    --> src/buffer.rs:110:12
[INFO] [stdout]     |
[INFO] [stdout] 110 | pub struct BufferPoolManager {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> src/buffer.rs:117:12
[INFO] [stdout]     |
[INFO] [stdout] 117 |     pub fn new(disk: DiskManager, pool: BufferPool) -> Self {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `fetch_page`
[INFO] [stdout]    --> src/buffer.rs:122:12
[INFO] [stdout]     |
[INFO] [stdout] 122 |     pub fn fetch_page(&mut self, page_id: PageId) -> Result<Rc<Buffer>, Error> {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `create_page`
[INFO] [stdout]    --> src/buffer.rs:149:12
[INFO] [stdout]     |
[INFO] [stdout] 149 |     pub fn create_page(&mut self) -> Result<Rc<Buffer>, Error> {
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `flush`
[INFO] [stdout]    --> src/buffer.rs:172:12
[INFO] [stdout]     |
[INFO] [stdout] 172 |     pub fn flush(&mut self) -> Result<(), Error> {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `didactic-funicular` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: 22 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "6e48fe78cc6002be85ce90e358c56cf2ecaf0614390e29b832265b0bf61b47b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6e48fe78cc6002be85ce90e358c56cf2ecaf0614390e29b832265b0bf61b47b4", kill_on_drop: false }`
[INFO] [stdout] 6e48fe78cc6002be85ce90e358c56cf2ecaf0614390e29b832265b0bf61b47b4