[INFO] cloning repository https://github.com/uuhan/cloyster
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/uuhan/cloyster" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fuuhan%2Fcloyster", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fuuhan%2Fcloyster'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4d3cab5ba1dd4ceca79fd586a1851c9f6e0ba30a
[INFO] testing uuhan/cloyster against 1.76.0 for beta-1.77-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fuuhan%2Fcloyster" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/uuhan/cloyster on toolchain 1.76.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.76.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/uuhan/cloyster
[INFO] finished tweaking git repo https://github.com/uuhan/cloyster
[INFO] tweaked toml for git repo https://github.com/uuhan/cloyster written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/uuhan/cloyster 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" "+1.76.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded serde_derive v1.0.133
[INFO] [stderr]   Downloaded serde v1.0.133
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[INFO] [stderr]   Downloaded abyss-promise v0.1.1
[INFO] [stderr]   Downloaded rand_xoshiro v0.4.0
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.76.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 38c146606eeb02d8e31f28b9410648112163b516be39fa19216a5f6d61200d39
[INFO] running `Command { std: "docker" "start" "-a" "38c146606eeb02d8e31f28b9410648112163b516be39fa19216a5f6d61200d39", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "38c146606eeb02d8e31f28b9410648112163b516be39fa19216a5f6d61200d39", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "38c146606eeb02d8e31f28b9410648112163b516be39fa19216a5f6d61200d39", kill_on_drop: false }`
[INFO] [stdout] 38c146606eeb02d8e31f28b9410648112163b516be39fa19216a5f6d61200d39
[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=warn" "-e" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.76.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9550a7f2274b888bed2edc2e530608bbf9c843d99eabfaaa8bb9e4fc4bd9e3e9
[INFO] running `Command { std: "docker" "start" "-a" "9550a7f2274b888bed2edc2e530608bbf9c843d99eabfaaa8bb9e4fc4bd9e3e9", kill_on_drop: false }`
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[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling typenum v1.15.0
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling syn v1.0.84
[INFO] [stderr]    Compiling libc v0.2.112
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]    Compiling serde_derive v1.0.133
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling parking_lot_core v0.8.5
[INFO] [stderr]    Compiling generic-array v0.14.4
[INFO] [stderr]    Compiling instant v0.1.12
[INFO] [stderr]    Compiling serde v1.0.133
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling cc v1.0.72
[INFO] [stderr]    Compiling smallvec v1.7.0
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling quote v1.0.14
[INFO] [stderr]    Compiling im v15.0.0
[INFO] [stderr]    Compiling lock_api v0.4.5
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.5
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling crc32fast v1.3.0
[INFO] [stderr]    Compiling parking_lot v0.11.2
[INFO] [stderr]    Compiling rand_xoshiro v0.4.0
[INFO] [stderr]    Compiling crossbeam-channel v0.5.1
[INFO] [stderr]    Compiling byteorder v1.4.3
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[INFO] [stderr]    Compiling once_cell v1.9.0
[INFO] [stderr]    Compiling constant_time_eq v0.1.5
[INFO] [stderr]    Compiling blake3 v1.2.0
[INFO] [stderr]    Compiling compare v0.1.0
[INFO] [stderr]    Compiling arrayvec v0.7.2
[INFO] [stderr]    Compiling binary-heap-plus v0.4.1
[INFO] [stderr]    Compiling abyss-promise v0.1.1
[INFO] [stderr]    Compiling digest v0.9.0
[INFO] [stderr]    Compiling fxhash v0.2.1
[INFO] [stderr]    Compiling fs2 v0.4.3
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling sized-chunks v0.6.5
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]    Compiling thiserror v1.0.30
[INFO] [stderr]    Compiling bincode v1.3.3
[INFO] [stderr]    Compiling cloyster v0.1.0-alpha.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `Condvar`, `Mutex`
[INFO] [stdout]   --> src/lib.rs:28:27
[INFO] [stdout]    |
[INFO] [stdout] 28 |     pub use parking_lot::{Condvar, Mutex, RwLock};
[INFO] [stdout]    |                           ^^^^^^^  ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `AtomicI64`
[INFO] [stdout]   --> src/lib.rs:43:25
[INFO] [stdout]    |
[INFO] [stdout] 43 |             AtomicBool, AtomicI64, AtomicI64 as AtomicLsn, AtomicU64, AtomicUsize,
[INFO] [stdout]    |                         ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `DoublyLinkedList`, `Item`
[INFO] [stdout]  --> src/pagecache/ds/mod.rs:8:11
[INFO] [stdout]   |
[INFO] [stdout] 8 |     dll::{DoublyLinkedList, Item},
[INFO] [stdout]   |           ^^^^^^^^^^^^^^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::sync::atomic::AtomicU64::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/pagecache/iobuf.rs:861:31
[INFO] [stdout]     |
[INFO] [stdout] 861 |         let res = self.header.compare_and_swap(old, new, SeqCst);
[INFO] [stdout]     |                               ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `node`
[INFO] [stdout]   --> src/ds/dll.rs:70:13
[INFO] [stdout]    |
[INFO] [stdout] 70 |         let node = Node::new(item);
[INFO] [stdout]    |             ^^^^ help: if this is intentional, prefix it with an underscore: `_node`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `remove` are never used
[INFO] [stdout]   --> src/ds/dll.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl<Item> Node<Item> {
[INFO] [stdout]    | --------------------- associated items in this implementation
[INFO] [stdout] 11 |     pub fn new(item: Item) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 19 |     pub fn remove(&mut self) {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `push_head`, `push_tail`, and `len` are never used
[INFO] [stdout]   --> src/ds/dll.rs:57:12
[INFO] [stdout]    |
[INFO] [stdout] 56 | impl<Item> DoublyLinkedList<Item> {
[INFO] [stdout]    | --------------------------------- methods in this implementation
[INFO] [stdout] 57 |     pub fn push_head(&mut self, item: Item) -> *mut Node<Item> {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 68 |     pub fn push_tail(&mut self, item: Item) -> *mut Node<Item> {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 75 |     pub fn len(&self) -> usize {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `CasResult` is never used
[INFO] [stdout]  --> src/ds/stack.rs:6:6
[INFO] [stdout]   |
[INFO] [stdout] 6 | type CasResult<'g, T> = Either<Shared<'g, Node<T>>, (Shared<'g, Node<T>>, Owned<Node<T>>)>;
[INFO] [stdout]   |      ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `head`, `push`, `cas`, and `cap` are never used
[INFO] [stdout]    --> src/ds/stack.rs:68:12
[INFO] [stdout]     |
[INFO] [stdout] 66  | impl<T: Clone + Send + Sync + 'static> Stack<T> {
[INFO] [stdout]     | ----------------------------------------------- methods in this implementation
[INFO] [stdout] 67  |     /// return current head pointer of the stack
[INFO] [stdout] 68  |     pub fn head<'g>(&self, guard: &'g Guard) -> Shared<'g, Node<T>> {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 72  |     pub fn push(&self, inner: T) {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 105 |     pub fn cas<'g>(
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 131 |     pub fn cap<'g>(
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `guard` is never read
[INFO] [stdout]   --> src/iter.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 7  | pub struct Iter {
[INFO] [stdout]    |            ---- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 13 |     guard: Guard,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `try_lock` are never used
[INFO] [stdout]   --> src/lock.rs:23:18
[INFO] [stdout]    |
[INFO] [stdout] 21 | impl<T> FastLock<T> {
[INFO] [stdout]    | ------------------- associated items in this implementation
[INFO] [stdout] 22 |     #[cfg(not(loom))]
[INFO] [stdout] 23 |     pub const fn new(inner: T) -> FastLock<T> {
[INFO] [stdout]    |                  ^^^
[INFO] [stdout] ...
[INFO] [stdout] 38 |     pub fn try_lock(&self) -> Option<FastLockGuard<'_, T>> {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `pop` is never used
[INFO] [stdout]    --> src/pagecache/ds/stack.rs:111:8
[INFO] [stdout]     |
[INFO] [stdout] 85  | impl<T: Clone + Send + Sync + 'static> Stack<T> {
[INFO] [stdout]     | ----------------------------------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 111 |     fn pop(&self, guard: &Guard) -> Option<T> {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Vec::<T, A>::split_off` that must be used
[INFO] [stdout]    --> src/pagecache/config.rs:403:9
[INFO] [stdout]     |
[INFO] [stdout] 403 |         buf.split_off(len - 4);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: use `.truncate()` if you don't need the other half
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 403 |         let _ = buf.split_off(len - 4);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Vec::<T, A>::split_off` that must be used
[INFO] [stdout]    --> src/pagecache/snapshot.rs:200:5
[INFO] [stdout]     |
[INFO] [stdout] 200 |     buf.split_off(len - 12);
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: use `.truncate()` if you don't need the other half
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 200 |     let _ = buf.split_off(len - 12);
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 14 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.82s
[INFO] running `Command { std: "docker" "inspect" "9550a7f2274b888bed2edc2e530608bbf9c843d99eabfaaa8bb9e4fc4bd9e3e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9550a7f2274b888bed2edc2e530608bbf9c843d99eabfaaa8bb9e4fc4bd9e3e9", kill_on_drop: false }`
[INFO] [stdout] 9550a7f2274b888bed2edc2e530608bbf9c843d99eabfaaa8bb9e4fc4bd9e3e9
[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=warn" "-e" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.76.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f7509174c3d6d800bd08e8e0e1f9d62e4baeb14fb3b0367890287f361c20baa4
[INFO] running `Command { std: "docker" "start" "-a" "f7509174c3d6d800bd08e8e0e1f9d62e4baeb14fb3b0367890287f361c20baa4", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling ppv-lite86 v0.2.16
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling humantime v2.1.0
[INFO] [stderr]    Compiling termcolor v1.1.2
[INFO] [stdout] warning: unused imports: `Condvar`, `Mutex`
[INFO] [stdout]   --> src/lib.rs:28:27
[INFO] [stdout]    |
[INFO] [stdout] 28 |     pub use parking_lot::{Condvar, Mutex, RwLock};
[INFO] [stdout]    |                           ^^^^^^^  ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `AtomicI64`
[INFO] [stdout]   --> src/lib.rs:43:25
[INFO] [stdout]    |
[INFO] [stdout] 43 |             AtomicBool, AtomicI64, AtomicI64 as AtomicLsn, AtomicU64, AtomicUsize,
[INFO] [stdout]    |                         ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `DoublyLinkedList`, `Item`
[INFO] [stdout]  --> src/pagecache/ds/mod.rs:8:11
[INFO] [stdout]   |
[INFO] [stdout] 8 |     dll::{DoublyLinkedList, Item},
[INFO] [stdout]   |           ^^^^^^^^^^^^^^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::sync::atomic::AtomicU64::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/pagecache/iobuf.rs:861:31
[INFO] [stdout]     |
[INFO] [stdout] 861 |         let res = self.header.compare_and_swap(old, new, SeqCst);
[INFO] [stdout]     |                               ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `node`
[INFO] [stdout]   --> src/ds/dll.rs:70:13
[INFO] [stdout]    |
[INFO] [stdout] 70 |         let node = Node::new(item);
[INFO] [stdout]    |             ^^^^ help: if this is intentional, prefix it with an underscore: `_node`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `remove` are never used
[INFO] [stdout]   --> src/ds/dll.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl<Item> Node<Item> {
[INFO] [stdout]    | --------------------- associated items in this implementation
[INFO] [stdout] 11 |     pub fn new(item: Item) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 19 |     pub fn remove(&mut self) {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `push_head`, `push_tail`, and `len` are never used
[INFO] [stdout]   --> src/ds/dll.rs:57:12
[INFO] [stdout]    |
[INFO] [stdout] 56 | impl<Item> DoublyLinkedList<Item> {
[INFO] [stdout]    | --------------------------------- methods in this implementation
[INFO] [stdout] 57 |     pub fn push_head(&mut self, item: Item) -> *mut Node<Item> {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 68 |     pub fn push_tail(&mut self, item: Item) -> *mut Node<Item> {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 75 |     pub fn len(&self) -> usize {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `CasResult` is never used
[INFO] [stdout]  --> src/ds/stack.rs:6:6
[INFO] [stdout]   |
[INFO] [stdout] 6 | type CasResult<'g, T> = Either<Shared<'g, Node<T>>, (Shared<'g, Node<T>>, Owned<Node<T>>)>;
[INFO] [stdout]   |      ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `head`, `push`, `cas`, and `cap` are never used
[INFO] [stdout]    --> src/ds/stack.rs:68:12
[INFO] [stdout]     |
[INFO] [stdout] 66  | impl<T: Clone + Send + Sync + 'static> Stack<T> {
[INFO] [stdout]     | ----------------------------------------------- methods in this implementation
[INFO] [stdout] 67  |     /// return current head pointer of the stack
[INFO] [stdout] 68  |     pub fn head<'g>(&self, guard: &'g Guard) -> Shared<'g, Node<T>> {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 72  |     pub fn push(&self, inner: T) {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 105 |     pub fn cas<'g>(
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 131 |     pub fn cap<'g>(
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `guard` is never read
[INFO] [stdout]   --> src/iter.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 7  | pub struct Iter {
[INFO] [stdout]    |            ---- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 13 |     guard: Guard,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `try_lock` are never used
[INFO] [stdout]   --> src/lock.rs:23:18
[INFO] [stdout]    |
[INFO] [stdout] 21 | impl<T> FastLock<T> {
[INFO] [stdout]    | ------------------- associated items in this implementation
[INFO] [stdout] 22 |     #[cfg(not(loom))]
[INFO] [stdout] 23 |     pub const fn new(inner: T) -> FastLock<T> {
[INFO] [stdout]    |                  ^^^
[INFO] [stdout] ...
[INFO] [stdout] 38 |     pub fn try_lock(&self) -> Option<FastLockGuard<'_, T>> {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `pop` is never used
[INFO] [stdout]    --> src/pagecache/ds/stack.rs:111:8
[INFO] [stdout]     |
[INFO] [stdout] 85  | impl<T: Clone + Send + Sync + 'static> Stack<T> {
[INFO] [stdout]     | ----------------------------------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 111 |     fn pop(&self, guard: &Guard) -> Option<T> {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Vec::<T, A>::split_off` that must be used
[INFO] [stdout]    --> src/pagecache/config.rs:403:9
[INFO] [stdout]     |
[INFO] [stdout] 403 |         buf.split_off(len - 4);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: use `.truncate()` if you don't need the other half
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 403 |         let _ = buf.split_off(len - 4);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Vec::<T, A>::split_off` that must be used
[INFO] [stdout]    --> src/pagecache/snapshot.rs:200:5
[INFO] [stdout]     |
[INFO] [stdout] 200 |     buf.split_off(len - 12);
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: use `.truncate()` if you don't need the other half
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 200 |     let _ = buf.split_off(len - 12);
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 14 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]    Compiling regex v1.5.4
[INFO] [stderr]    Compiling env_logger v0.9.0
[INFO] [stderr]    Compiling cloyster v0.1.0-alpha.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Config`
[INFO] [stdout]  --> examples/demo.rs:1:38
[INFO] [stdout]   |
[INFO] [stdout] 1 | use cloyster::pagecache::{self, pin, Config, Materializer};
[INFO] [stdout]   |                                      ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `key` is never read
[INFO] [stdout]   --> examples/demo.rs:38:9
[INFO] [stdout]    |
[INFO] [stdout] 38 |         key = pc
[INFO] [stdout]    |         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `key`
[INFO] [stdout]   --> examples/demo.rs:49:18
[INFO] [stdout]    |
[INFO] [stdout] 49 |         let (mut key, page, size_on_disk) = pc.get(id, &guard).unwrap().unwrap();
[INFO] [stdout]    |                  ^^^ help: if this is intentional, prefix it with an underscore: `_key`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `size_on_disk`
[INFO] [stdout]   --> examples/demo.rs:49:29
[INFO] [stdout]    |
[INFO] [stdout] 49 |         let (mut key, page, size_on_disk) = pc.get(id, &guard).unwrap().unwrap();
[INFO] [stdout]    |                             ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_size_on_disk`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> examples/demo.rs:49:14
[INFO] [stdout]    |
[INFO] [stdout] 49 |         let (mut key, page, size_on_disk) = pc.get(id, &guard).unwrap().unwrap();
[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: unused imports: `Condvar`, `Mutex`
[INFO] [stdout]   --> src/lib.rs:28:27
[INFO] [stdout]    |
[INFO] [stdout] 28 |     pub use parking_lot::{Condvar, Mutex, RwLock};
[INFO] [stdout]    |                           ^^^^^^^  ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `AtomicI64`
[INFO] [stdout]   --> src/lib.rs:43:25
[INFO] [stdout]    |
[INFO] [stdout] 43 |             AtomicBool, AtomicI64, AtomicI64 as AtomicLsn, AtomicU64, AtomicUsize,
[INFO] [stdout]    |                         ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `DoublyLinkedList`, `Item`
[INFO] [stdout]  --> src/pagecache/ds/mod.rs:8:11
[INFO] [stdout]   |
[INFO] [stdout] 8 |     dll::{DoublyLinkedList, Item},
[INFO] [stdout]   |           ^^^^^^^^^^^^^^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::sync::atomic::AtomicU64::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/pagecache/iobuf.rs:861:31
[INFO] [stdout]     |
[INFO] [stdout] 861 |         let res = self.header.compare_and_swap(old, new, SeqCst);
[INFO] [stdout]     |                               ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `node`
[INFO] [stdout]   --> src/ds/dll.rs:70:13
[INFO] [stdout]    |
[INFO] [stdout] 70 |         let node = Node::new(item);
[INFO] [stdout]    |             ^^^^ help: if this is intentional, prefix it with an underscore: `_node`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `remove` are never used
[INFO] [stdout]   --> src/ds/dll.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl<Item> Node<Item> {
[INFO] [stdout]    | --------------------- associated items in this implementation
[INFO] [stdout] 11 |     pub fn new(item: Item) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 19 |     pub fn remove(&mut self) {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `push_head`, `push_tail`, and `len` are never used
[INFO] [stdout]   --> src/ds/dll.rs:57:12
[INFO] [stdout]    |
[INFO] [stdout] 56 | impl<Item> DoublyLinkedList<Item> {
[INFO] [stdout]    | --------------------------------- methods in this implementation
[INFO] [stdout] 57 |     pub fn push_head(&mut self, item: Item) -> *mut Node<Item> {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 68 |     pub fn push_tail(&mut self, item: Item) -> *mut Node<Item> {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 75 |     pub fn len(&self) -> usize {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `CasResult` is never used
[INFO] [stdout]  --> src/ds/stack.rs:6:6
[INFO] [stdout]   |
[INFO] [stdout] 6 | type CasResult<'g, T> = Either<Shared<'g, Node<T>>, (Shared<'g, Node<T>>, Owned<Node<T>>)>;
[INFO] [stdout]   |      ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `head`, `push`, `cas`, and `cap` are never used
[INFO] [stdout]    --> src/ds/stack.rs:68:12
[INFO] [stdout]     |
[INFO] [stdout] 66  | impl<T: Clone + Send + Sync + 'static> Stack<T> {
[INFO] [stdout]     | ----------------------------------------------- methods in this implementation
[INFO] [stdout] 67  |     /// return current head pointer of the stack
[INFO] [stdout] 68  |     pub fn head<'g>(&self, guard: &'g Guard) -> Shared<'g, Node<T>> {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 72  |     pub fn push(&self, inner: T) {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 105 |     pub fn cas<'g>(
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 131 |     pub fn cap<'g>(
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `guard` is never read
[INFO] [stdout]   --> src/iter.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 7  | pub struct Iter {
[INFO] [stdout]    |            ---- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 13 |     guard: Guard,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `try_lock` are never used
[INFO] [stdout]   --> src/lock.rs:23:18
[INFO] [stdout]    |
[INFO] [stdout] 21 | impl<T> FastLock<T> {
[INFO] [stdout]    | ------------------- associated items in this implementation
[INFO] [stdout] 22 |     #[cfg(not(loom))]
[INFO] [stdout] 23 |     pub const fn new(inner: T) -> FastLock<T> {
[INFO] [stdout]    |                  ^^^
[INFO] [stdout] ...
[INFO] [stdout] 38 |     pub fn try_lock(&self) -> Option<FastLockGuard<'_, T>> {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Vec::<T, A>::split_off` that must be used
[INFO] [stdout]    --> src/pagecache/config.rs:403:9
[INFO] [stdout]     |
[INFO] [stdout] 403 |         buf.split_off(len - 4);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: use `.truncate()` if you don't need the other half
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 403 |         let _ = buf.split_off(len - 4);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Vec::<T, A>::split_off` that must be used
[INFO] [stdout]    --> src/pagecache/snapshot.rs:200:5
[INFO] [stdout]     |
[INFO] [stdout] 200 |     buf.split_off(len - 12);
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: use `.truncate()` if you don't need the other half
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 200 |     let _ = buf.split_off(len - 12);
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 4.40s
[INFO] running `Command { std: "docker" "inspect" "f7509174c3d6d800bd08e8e0e1f9d62e4baeb14fb3b0367890287f361c20baa4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f7509174c3d6d800bd08e8e0e1f9d62e4baeb14fb3b0367890287f361c20baa4", kill_on_drop: false }`
[INFO] [stdout] f7509174c3d6d800bd08e8e0e1f9d62e4baeb14fb3b0367890287f361c20baa4
[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=warn" "-e" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.76.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] a9c02d92e5e3fb55b924b49d50b8ae917cd741b40c979b111a931cc52656d723
[INFO] running `Command { std: "docker" "start" "-a" "a9c02d92e5e3fb55b924b49d50b8ae917cd741b40c979b111a931cc52656d723", kill_on_drop: false }`
[INFO] [stderr] warning: unused imports: `Condvar`, `Mutex`
[INFO] [stderr]   --> src/lib.rs:28:27
[INFO] [stderr]    |
[INFO] [stderr] 28 |     pub use parking_lot::{Condvar, Mutex, RwLock};
[INFO] [stderr]    |                           ^^^^^^^  ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `AtomicI64`
[INFO] [stderr]   --> src/lib.rs:43:25
[INFO] [stderr]    |
[INFO] [stderr] 43 |             AtomicBool, AtomicI64, AtomicI64 as AtomicLsn, AtomicU64, AtomicUsize,
[INFO] [stderr]    |                         ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `DoublyLinkedList`, `Item`
[INFO] [stderr]  --> src/pagecache/ds/mod.rs:8:11
[INFO] [stderr]   |
[INFO] [stderr] 8 |     dll::{DoublyLinkedList, Item},
[INFO] [stderr]   |           ^^^^^^^^^^^^^^^^  ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated method `std::sync::atomic::AtomicU64::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stderr]    --> src/pagecache/iobuf.rs:861:31
[INFO] [stderr]     |
[INFO] [stderr] 861 |         let res = self.header.compare_and_swap(old, new, SeqCst);
[INFO] [stderr]     |                               ^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `node`
[INFO] [stderr]   --> src/ds/dll.rs:70:13
[INFO] [stderr]    |
[INFO] [stderr] 70 |         let node = Node::new(item);
[INFO] [stderr]    |             ^^^^ help: if this is intentional, prefix it with an underscore: `_node`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated items `new` and `remove` are never used
[INFO] [stderr]   --> src/ds/dll.rs:11:12
[INFO] [stderr]    |
[INFO] [stderr] 10 | impl<Item> Node<Item> {
[INFO] [stderr]    | --------------------- associated items in this implementation
[INFO] [stderr] 11 |     pub fn new(item: Item) -> Self {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] ...
[INFO] [stderr] 19 |     pub fn remove(&mut self) {
[INFO] [stderr]    |            ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: methods `push_head`, `push_tail`, and `len` are never used
[INFO] [stderr]   --> src/ds/dll.rs:57:12
[INFO] [stderr]    |
[INFO] [stderr] 56 | impl<Item> DoublyLinkedList<Item> {
[INFO] [stderr]    | --------------------------------- methods in this implementation
[INFO] [stderr] 57 |     pub fn push_head(&mut self, item: Item) -> *mut Node<Item> {
[INFO] [stderr]    |            ^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 68 |     pub fn push_tail(&mut self, item: Item) -> *mut Node<Item> {
[INFO] [stderr]    |            ^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 75 |     pub fn len(&self) -> usize {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type alias `CasResult` is never used
[INFO] [stderr]  --> src/ds/stack.rs:6:6
[INFO] [stderr]   |
[INFO] [stderr] 6 | type CasResult<'g, T> = Either<Shared<'g, Node<T>>, (Shared<'g, Node<T>>, Owned<Node<T>>)>;
[INFO] [stderr]   |      ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: methods `head`, `push`, `cas`, and `cap` are never used
[INFO] [stderr]    --> src/ds/stack.rs:68:12
[INFO] [stderr]     |
[INFO] [stderr] 66  | impl<T: Clone + Send + Sync + 'static> Stack<T> {
[INFO] [stderr]     | ----------------------------------------------- methods in this implementation
[INFO] [stderr] 67  |     /// return current head pointer of the stack
[INFO] [stderr] 68  |     pub fn head<'g>(&self, guard: &'g Guard) -> Shared<'g, Node<T>> {
[INFO] [stderr]     |            ^^^^
[INFO] [stderr] ...
[INFO] [stderr] 72  |     pub fn push(&self, inner: T) {
[INFO] [stderr]     |            ^^^^
[INFO] [stderr] ...
[INFO] [stderr] 105 |     pub fn cas<'g>(
[INFO] [stderr]     |            ^^^
[INFO] [stderr] ...
[INFO] [stderr] 131 |     pub fn cap<'g>(
[INFO] [stderr]     |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field `guard` is never read
[INFO] [stderr]   --> src/iter.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 7  | pub struct Iter {
[INFO] [stderr]    |            ---- field in this struct
[INFO] [stderr] ...
[INFO] [stderr] 13 |     guard: Guard,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated items `new` and `try_lock` are never used
[INFO] [stderr]   --> src/lock.rs:23:18
[INFO] [stderr]    |
[INFO] [stderr] 21 | impl<T> FastLock<T> {
[INFO] [stderr]    | ------------------- associated items in this implementation
[INFO] [stderr] 22 |     #[cfg(not(loom))]
[INFO] [stderr] 23 |     pub const fn new(inner: T) -> FastLock<T> {
[INFO] [stderr]    |                  ^^^
[INFO] [stderr] ...
[INFO] [stderr] 38 |     pub fn try_lock(&self) -> Option<FastLockGuard<'_, T>> {
[INFO] [stderr]    |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method `pop` is never used
[INFO] [stderr]    --> src/pagecache/ds/stack.rs:111:8
[INFO] [stderr]     |
[INFO] [stderr] 85  | impl<T: Clone + Send + Sync + 'static> Stack<T> {
[INFO] [stderr]     | ----------------------------------------------- method in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 111 |     fn pop(&self, guard: &Guard) -> Option<T> {
[INFO] [stderr]     |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `Vec::<T, A>::split_off` that must be used
[INFO] [stderr]    --> src/pagecache/config.rs:403:9
[INFO] [stderr]     |
[INFO] [stderr] 403 |         buf.split_off(len - 4);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: use `.truncate()` if you don't need the other half
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 403 |         let _ = buf.split_off(len - 4);
[INFO] [stderr]     |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `Vec::<T, A>::split_off` that must be used
[INFO] [stderr]    --> src/pagecache/snapshot.rs:200:5
[INFO] [stderr]     |
[INFO] [stderr] 200 |     buf.split_off(len - 12);
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: use `.truncate()` if you don't need the other half
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 200 |     let _ = buf.split_off(len - 12);
[INFO] [stderr]     |     +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: `cloyster` (lib) generated 14 warnings (run `cargo fix --lib -p cloyster` to apply 4 suggestions)
[INFO] [stderr] warning: unused import: `Config`
[INFO] [stderr]  --> examples/demo.rs:1:38
[INFO] [stderr]   |
[INFO] [stderr] 1 | use cloyster::pagecache::{self, pin, Config, Materializer};
[INFO] [stderr]   |                                      ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `key` is never read
[INFO] [stderr]   --> examples/demo.rs:38:9
[INFO] [stderr]    |
[INFO] [stderr] 38 |         key = pc
[INFO] [stderr]    |         ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `key`
[INFO] [stderr]   --> examples/demo.rs:49:18
[INFO] [stderr]    |
[INFO] [stderr] 49 |         let (mut key, page, size_on_disk) = pc.get(id, &guard).unwrap().unwrap();
[INFO] [stderr]    |                  ^^^ help: if this is intentional, prefix it with an underscore: `_key`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `size_on_disk`
[INFO] [stderr]   --> examples/demo.rs:49:29
[INFO] [stderr]    |
[INFO] [stderr] 49 |         let (mut key, page, size_on_disk) = pc.get(id, &guard).unwrap().unwrap();
[INFO] [stderr]    |                             ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_size_on_disk`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> examples/demo.rs:49:14
[INFO] [stderr]    |
[INFO] [stderr] 49 |         let (mut key, page, size_on_disk) = pc.get(id, &guard).unwrap().unwrap();
[INFO] [stderr]    |              ----^^^
[INFO] [stderr]    |              |
[INFO] [stderr]    |              help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `cloyster` (example "demo") generated 5 warnings (run `cargo fix --example "demo"` to apply 4 suggestions)
[INFO] [stderr] warning: `cloyster` (lib test) generated 13 warnings (13 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/cloyster-8a36d8e21d556a37)
[INFO] [stdout] 
[INFO] [stdout] running 10 tests
[INFO] [stdout] test pagecache::ds::dll::test_dll ... ok
[INFO] [stdout] test pagecache::ds::pagetable::test_split_fanout ... ok
[INFO] [stdout] test pagecache::ds::pagetable::basic_functionality ... ok
[INFO] [stdout] test pagecache::ds::stack::tests::basic_functionality ... ok
[INFO] [stdout] test tree::tests::test_block_persistence ... FAILED
[INFO] [stdout] test tree::tests::test_block_range ... ok
[INFO] [stdout] test tree::tests::test_block_scan_prefix ... ok
[INFO] [stdout] test tree::tests::test_block_insert_get ... ok
[INFO] [stdout] test tree::tests::test_open_block ... ok
[INFO] [stdout] test tree::tests::test_block_iter_count ... ok
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- tree::tests::test_block_persistence stdout ----
[INFO] [stdout] thread 'tree::tests::test_block_persistence' panicked at src/pagecache/config.rs:155:13:
[INFO] [stdout] open file at "./cloyster.db/db": IO error: Read-only file system (os error 30)
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x55e73cb26b66 - std::backtrace_rs::backtrace::libunwind::trace::hbee8a7973eeb6c93
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/../../backtrace/src/backtrace/libunwind.rs:104:5
[INFO] [stdout]    1:     0x55e73cb26b66 - std::backtrace_rs::backtrace::trace_unsynchronized::hc8ac75eea3aa6899
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stdout]    2:     0x55e73cb26b66 - std::sys_common::backtrace::_print_fmt::hc7f3e3b5298b1083
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:68:5
[INFO] [stdout]    3:     0x55e73cb26b66 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hbb235daedd7c6190
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:44:22
[INFO] [stdout]    4:     0x55e73cb51710 - core::fmt::rt::Argument::fmt::h76c38a80d925a410
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/fmt/rt.rs:142:9
[INFO] [stdout]    5:     0x55e73cb51710 - core::fmt::write::h3ed6aeaa977c8e45
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/fmt/mod.rs:1120:17
[INFO] [stdout]    6:     0x55e73cb23ddf - std::io::Write::write_fmt::h1299aa7741865f2b
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/io/mod.rs:1810:15
[INFO] [stdout]    7:     0x55e73cb26944 - std::sys_common::backtrace::_print::h5d645a07e0fcfdbb
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:47:5
[INFO] [stdout]    8:     0x55e73cb26944 - std::sys_common::backtrace::print::h85035a511aafe7a8
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:34:9
[INFO] [stdout]    9:     0x55e73cb286b7 - std::panicking::default_hook::{{closure}}::hcce8cea212785a25
[INFO] [stdout]   10:     0x55e73cb2839d - std::panicking::default_hook::hf5fcb0f213fe709a
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:289:9
[INFO] [stdout]   11:     0x55e73ca78357 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h60265c2dfa87ee34
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/alloc/src/boxed.rs:2029:9
[INFO] [stdout]   12:     0x55e73ca78357 - test::test_main::{{closure}}::h77865bd3127078c6
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/test/src/lib.rs:138:21
[INFO] [stdout]   13:     0x55e73cb28cd6 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hbc5ccf4eb663e1e5
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/alloc/src/boxed.rs:2029:9
[INFO] [stdout]   14:     0x55e73cb28cd6 - std::panicking::rust_panic_with_hook::h095fccf1dc9379ee
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:783:13
[INFO] [stdout]   15:     0x55e73cb28a22 - std::panicking::begin_panic_handler::{{closure}}::h032ba12139b353db
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:657:13
[INFO] [stdout]   16:     0x55e73cb27066 - std::sys_common::backtrace::__rust_end_short_backtrace::h9259bc2ff8fd0f76
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:171:18
[INFO] [stdout]   17:     0x55e73cb28780 - rust_begin_unwind
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:645:5
[INFO] [stdout]   18:     0x55e73c8ff915 - core::panicking::panic_fmt::h784f20a50eaab275
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/panicking.rs:72:14
[INFO] [stdout]   19:     0x55e73c9a2696 - cloyster::pagecache::config::ConfigBuilder::build::{{closure}}::h02bb8a643dbca628
[INFO] [stdout]                                at /opt/rustwide/workdir/src/pagecache/config.rs:155:13
[INFO] [stdout]   20:     0x55e73ca1fff3 - core::result::Result<T,E>::unwrap_or_else::h2ec766c3e1d221b5
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/result.rs:1426:23
[INFO] [stdout]   21:     0x55e73c9a23c4 - cloyster::pagecache::config::ConfigBuilder::build::hd2d00a1a01279e9e
[INFO] [stdout]                                at /opt/rustwide/workdir/src/pagecache/config.rs:154:20
[INFO] [stdout]   22:     0x55e73c94e30d - cloyster::context::Context::new::hb2a8cf3495258993
[INFO] [stdout]                                at /opt/rustwide/workdir/src/context.rs:27:13
[INFO] [stdout]   23:     0x55e73c99f0f5 - cloyster::database::Database::open::h59a15dd44ef8a4f9
[INFO] [stdout]                                at /opt/rustwide/workdir/src/database.rs:25:23
[INFO] [stdout]   24:     0x55e73c9ab70e - cloyster::tree::tests::test_block_persistence::ha68aafc7dd659739
[INFO] [stdout]                                at /opt/rustwide/workdir/src/tree.rs:277:18
[INFO] [stdout]   25:     0x55e73c9ab6a7 - cloyster::tree::tests::test_block_persistence::{{closure}}::hbdd9269cf76cb42b
[INFO] [stdout]                                at /opt/rustwide/workdir/src/tree.rs:276:32
[INFO] [stdout]   26:     0x55e73ca339f6 - core::ops::function::FnOnce::call_once::h66468b7acc582220
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   27:     0x55e73ca7dc2f - core::ops::function::FnOnce::call_once::h8dc6907944022cf6
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   28:     0x55e73ca7dc2f - test::__rust_begin_short_backtrace::haae1a87433f1efb3
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/test/src/lib.rs:627:18
[INFO] [stdout]   29:     0x55e73ca7c9b1 - test::run_test_in_process::{{closure}}::h8c7decfa7c14e152
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/test/src/lib.rs:650:60
[INFO] [stdout]   30:     0x55e73ca7c9b1 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h19e6ff056d9d21e9
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   31:     0x55e73ca7c9b1 - std::panicking::try::do_call::h89c848fcaa37c035
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:552:40
[INFO] [stdout]   32:     0x55e73ca7c9b1 - std::panicking::try::h57ab3dc74e2839b8
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:516:19
[INFO] [stdout]   33:     0x55e73ca7c9b1 - std::panic::catch_unwind::hfb6a1b1abc120fb9
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panic.rs:142:14
[INFO] [stdout]   34:     0x55e73ca7c9b1 - test::run_test_in_process::h5ae2f9875edd562d
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/test/src/lib.rs:650:27
[INFO] [stdout]   35:     0x55e73ca7c9b1 - test::run_test::{{closure}}::h35d7300d8928a067
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/test/src/lib.rs:573:43
[INFO] [stdout]   36:     0x55e73ca43ce6 - test::run_test::{{closure}}::h7525ced405d23d1b
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/test/src/lib.rs:601:41
[INFO] [stdout]   37:     0x55e73ca43ce6 - std::sys_common::backtrace::__rust_begin_short_backtrace::h4e7db78ce05afad8
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:155:18
[INFO] [stdout]   38:     0x55e73ca48d47 - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::hcfbcb64f1a1b3482
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/thread/mod.rs:529:17
[INFO] [stdout]   39:     0x55e73ca48d47 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h9d89c5c4108bd689
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   40:     0x55e73ca48d47 - std::panicking::try::do_call::h8a4869bc94ec50c9
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:552:40
[INFO] [stdout]   41:     0x55e73ca48d47 - std::panicking::try::h9a576f20ff81ac30
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:516:19
[INFO] [stdout]   42:     0x55e73ca48d47 - std::panic::catch_unwind::hbcb4e3f860ef9830
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panic.rs:142:14
[INFO] [stdout]   43:     0x55e73ca48d47 - std::thread::Builder::spawn_unchecked_::{{closure}}::h93c79a6be1505948
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/thread/mod.rs:528:30
[INFO] [stdout]   44:     0x55e73ca48d47 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h426d96740c81bdaf
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   45:     0x55e73cb2e8a5 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h12de4fc57affb195
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/alloc/src/boxed.rs:2015:9
[INFO] [stdout]   46:     0x55e73cb2e8a5 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h3c619f45059d5cf1
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/alloc/src/boxed.rs:2015:9
[INFO] [stdout]   47:     0x55e73cb2e8a5 - std::sys::unix::thread::Thread::new::thread_start::hbac657605e4b7389
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys/unix/thread.rs:108:17
[INFO] [stdout]   48:     0x7f7f2e485ac3 - <unknown>
[INFO] [stdout]   49:     0x7f7f2e516bf4 - __clone
[INFO] [stdout]   50:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     tree::tests::test_block_persistence
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 9 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.05s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass `--lib`
[INFO] running `Command { std: "docker" "inspect" "a9c02d92e5e3fb55b924b49d50b8ae917cd741b40c979b111a931cc52656d723", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a9c02d92e5e3fb55b924b49d50b8ae917cd741b40c979b111a931cc52656d723", kill_on_drop: false }`
[INFO] [stdout] a9c02d92e5e3fb55b924b49d50b8ae917cd741b40c979b111a931cc52656d723
[INFO] testing uuhan/cloyster against beta-2024-02-10 for beta-1.77-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fuuhan%2Fcloyster" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/uuhan/cloyster on toolchain beta-2024-02-10
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2024-02-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/uuhan/cloyster
[INFO] finished tweaking git repo https://github.com/uuhan/cloyster
[INFO] tweaked toml for git repo https://github.com/uuhan/cloyster written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/uuhan/cloyster 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" "+beta-2024-02-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2024-02-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0baff4432a09cf35a4e4ca4887ac3b1c554bf35be48209a0e5c7530885cb3665
[INFO] running `Command { std: "docker" "start" "-a" "0baff4432a09cf35a4e4ca4887ac3b1c554bf35be48209a0e5c7530885cb3665", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0baff4432a09cf35a4e4ca4887ac3b1c554bf35be48209a0e5c7530885cb3665", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0baff4432a09cf35a4e4ca4887ac3b1c554bf35be48209a0e5c7530885cb3665", kill_on_drop: false }`
[INFO] [stdout] 0baff4432a09cf35a4e4ca4887ac3b1c554bf35be48209a0e5c7530885cb3665
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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=warn" "-e" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2024-02-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cc8708734f8b4646af1a6eb9c0c1e1d6312c1eb9083f76651545c5100639e373
[INFO] running `Command { std: "docker" "start" "-a" "cc8708734f8b4646af1a6eb9c0c1e1d6312c1eb9083f76651545c5100639e373", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling typenum v1.15.0
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.84
[INFO] [stderr]    Compiling libc v0.2.112
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]    Compiling serde_derive v1.0.133
[INFO] [stderr]    Compiling parking_lot_core v0.8.5
[INFO] [stderr]    Compiling generic-array v0.14.4
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling instant v0.1.12
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling serde v1.0.133
[INFO] [stderr]    Compiling cc v1.0.72
[INFO] [stderr]    Compiling smallvec v1.7.0
[INFO] [stderr]    Compiling im v15.0.0
[INFO] [stderr]    Compiling quote v1.0.14
[INFO] [stderr]    Compiling lock_api v0.4.5
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.5
[INFO] [stderr]    Compiling crc32fast v1.3.0
[INFO] [stderr]    Compiling rand_xoshiro v0.4.0
[INFO] [stderr]    Compiling crossbeam-channel v0.5.1
[INFO] [stderr]    Compiling parking_lot v0.11.2
[INFO] [stderr]    Compiling arrayvec v0.7.2
[INFO] [stderr]    Compiling compare v0.1.0
[INFO] [stderr]    Compiling constant_time_eq v0.1.5
[INFO] [stderr]    Compiling bitmaps v2.1.0
[INFO] [stderr]    Compiling once_cell v1.9.0
[INFO] [stderr]    Compiling byteorder v1.4.3
[INFO] [stderr]    Compiling arrayref v0.3.6
[INFO] [stderr]    Compiling abyss-promise v0.1.1
[INFO] [stderr]    Compiling blake3 v1.2.0
[INFO] [stderr]    Compiling binary-heap-plus v0.4.1
[INFO] [stderr]    Compiling fxhash v0.2.1
[INFO] [stderr]    Compiling digest v0.9.0
[INFO] [stderr]    Compiling fs2 v0.4.3
[INFO] [stderr]    Compiling sized-chunks v0.6.5
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]    Compiling thiserror v1.0.30
[INFO] [stderr]    Compiling bincode v1.3.3
[INFO] [stderr]    Compiling cloyster v0.1.0-alpha.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `Condvar`, `Mutex`
[INFO] [stdout]   --> src/lib.rs:28:27
[INFO] [stdout]    |
[INFO] [stdout] 28 |     pub use parking_lot::{Condvar, Mutex, RwLock};
[INFO] [stdout]    |                           ^^^^^^^  ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `AtomicI64`
[INFO] [stdout]   --> src/lib.rs:43:25
[INFO] [stdout]    |
[INFO] [stdout] 43 |             AtomicBool, AtomicI64, AtomicI64 as AtomicLsn, AtomicU64, AtomicUsize,
[INFO] [stdout]    |                         ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `DoublyLinkedList`, `Item`
[INFO] [stdout]  --> src/pagecache/ds/mod.rs:8:11
[INFO] [stdout]   |
[INFO] [stdout] 8 |     dll::{DoublyLinkedList, Item},
[INFO] [stdout]   |           ^^^^^^^^^^^^^^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::sync::atomic::AtomicU64::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/pagecache/iobuf.rs:861:31
[INFO] [stdout]     |
[INFO] [stdout] 861 |         let res = self.header.compare_and_swap(old, new, SeqCst);
[INFO] [stdout]     |                               ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `node`
[INFO] [stdout]   --> src/ds/dll.rs:70:13
[INFO] [stdout]    |
[INFO] [stdout] 70 |         let node = Node::new(item);
[INFO] [stdout]    |             ^^^^ help: if this is intentional, prefix it with an underscore: `_node`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `remove` are never used
[INFO] [stdout]   --> src/ds/dll.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl<Item> Node<Item> {
[INFO] [stdout]    | --------------------- associated items in this implementation
[INFO] [stdout] 11 |     pub fn new(item: Item) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 19 |     pub fn remove(&mut self) {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `push_head`, `push_tail`, and `len` are never used
[INFO] [stdout]   --> src/ds/dll.rs:57:12
[INFO] [stdout]    |
[INFO] [stdout] 56 | impl<Item> DoublyLinkedList<Item> {
[INFO] [stdout]    | --------------------------------- methods in this implementation
[INFO] [stdout] 57 |     pub fn push_head(&mut self, item: Item) -> *mut Node<Item> {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 68 |     pub fn push_tail(&mut self, item: Item) -> *mut Node<Item> {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 75 |     pub fn len(&self) -> usize {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `CasResult` is never used
[INFO] [stdout]  --> src/ds/stack.rs:6:6
[INFO] [stdout]   |
[INFO] [stdout] 6 | type CasResult<'g, T> = Either<Shared<'g, Node<T>>, (Shared<'g, Node<T>>, Owned<Node<T>>)>;
[INFO] [stdout]   |      ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `head`, `push`, `cas`, and `cap` are never used
[INFO] [stdout]    --> src/ds/stack.rs:68:12
[INFO] [stdout]     |
[INFO] [stdout] 66  | impl<T: Clone + Send + Sync + 'static> Stack<T> {
[INFO] [stdout]     | ----------------------------------------------- methods in this implementation
[INFO] [stdout] 67  |     /// return current head pointer of the stack
[INFO] [stdout] 68  |     pub fn head<'g>(&self, guard: &'g Guard) -> Shared<'g, Node<T>> {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 72  |     pub fn push(&self, inner: T) {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 105 |     pub fn cas<'g>(
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 131 |     pub fn cap<'g>(
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `guard` is never read
[INFO] [stdout]   --> src/iter.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 7  | pub struct Iter {
[INFO] [stdout]    |            ---- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 13 |     guard: Guard,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `try_lock` are never used
[INFO] [stdout]   --> src/lock.rs:23:18
[INFO] [stdout]    |
[INFO] [stdout] 21 | impl<T> FastLock<T> {
[INFO] [stdout]    | ------------------- associated items in this implementation
[INFO] [stdout] 22 |     #[cfg(not(loom))]
[INFO] [stdout] 23 |     pub const fn new(inner: T) -> FastLock<T> {
[INFO] [stdout]    |                  ^^^
[INFO] [stdout] ...
[INFO] [stdout] 38 |     pub fn try_lock(&self) -> Option<FastLockGuard<'_, T>> {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `pop` is never used
[INFO] [stdout]    --> src/pagecache/ds/stack.rs:111:8
[INFO] [stdout]     |
[INFO] [stdout] 85  | impl<T: Clone + Send + Sync + 'static> Stack<T> {
[INFO] [stdout]     | ----------------------------------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 111 |     fn pop(&self, guard: &Guard) -> Option<T> {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Vec::<T, A>::split_off` that must be used
[INFO] [stdout]    --> src/pagecache/config.rs:403:9
[INFO] [stdout]     |
[INFO] [stdout] 403 |         buf.split_off(len - 4);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: use `.truncate()` if you don't need the other half
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 403 |         let _ = buf.split_off(len - 4);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Vec::<T, A>::split_off` that must be used
[INFO] [stdout]    --> src/pagecache/snapshot.rs:200:5
[INFO] [stdout]     |
[INFO] [stdout] 200 |     buf.split_off(len - 12);
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: use `.truncate()` if you don't need the other half
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 200 |     let _ = buf.split_off(len - 12);
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 14 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.61s
[INFO] running `Command { std: "docker" "inspect" "cc8708734f8b4646af1a6eb9c0c1e1d6312c1eb9083f76651545c5100639e373", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cc8708734f8b4646af1a6eb9c0c1e1d6312c1eb9083f76651545c5100639e373", kill_on_drop: false }`
[INFO] [stdout] cc8708734f8b4646af1a6eb9c0c1e1d6312c1eb9083f76651545c5100639e373
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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=warn" "-e" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2024-02-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7821c1d1cad7bfd416615679ff7fd6dae1f5d1bed9546b3ef2f61a0261d7da96
[INFO] running `Command { std: "docker" "start" "-a" "7821c1d1cad7bfd416615679ff7fd6dae1f5d1bed9546b3ef2f61a0261d7da96", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling ppv-lite86 v0.2.16
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling humantime v2.1.0
[INFO] [stderr]    Compiling termcolor v1.1.2
[INFO] [stdout] warning: unused imports: `Condvar`, `Mutex`
[INFO] [stdout]   --> src/lib.rs:28:27
[INFO] [stdout]    |
[INFO] [stdout] 28 |     pub use parking_lot::{Condvar, Mutex, RwLock};
[INFO] [stdout]    |                           ^^^^^^^  ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `AtomicI64`
[INFO] [stdout]   --> src/lib.rs:43:25
[INFO] [stdout]    |
[INFO] [stdout] 43 |             AtomicBool, AtomicI64, AtomicI64 as AtomicLsn, AtomicU64, AtomicUsize,
[INFO] [stdout]    |                         ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `DoublyLinkedList`, `Item`
[INFO] [stdout]  --> src/pagecache/ds/mod.rs:8:11
[INFO] [stdout]   |
[INFO] [stdout] 8 |     dll::{DoublyLinkedList, Item},
[INFO] [stdout]   |           ^^^^^^^^^^^^^^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::sync::atomic::AtomicU64::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/pagecache/iobuf.rs:861:31
[INFO] [stdout]     |
[INFO] [stdout] 861 |         let res = self.header.compare_and_swap(old, new, SeqCst);
[INFO] [stdout]     |                               ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `node`
[INFO] [stdout]   --> src/ds/dll.rs:70:13
[INFO] [stdout]    |
[INFO] [stdout] 70 |         let node = Node::new(item);
[INFO] [stdout]    |             ^^^^ help: if this is intentional, prefix it with an underscore: `_node`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `remove` are never used
[INFO] [stdout]   --> src/ds/dll.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl<Item> Node<Item> {
[INFO] [stdout]    | --------------------- associated items in this implementation
[INFO] [stdout] 11 |     pub fn new(item: Item) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 19 |     pub fn remove(&mut self) {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `push_head`, `push_tail`, and `len` are never used
[INFO] [stdout]   --> src/ds/dll.rs:57:12
[INFO] [stdout]    |
[INFO] [stdout] 56 | impl<Item> DoublyLinkedList<Item> {
[INFO] [stdout]    | --------------------------------- methods in this implementation
[INFO] [stdout] 57 |     pub fn push_head(&mut self, item: Item) -> *mut Node<Item> {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 68 |     pub fn push_tail(&mut self, item: Item) -> *mut Node<Item> {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 75 |     pub fn len(&self) -> usize {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `CasResult` is never used
[INFO] [stdout]  --> src/ds/stack.rs:6:6
[INFO] [stdout]   |
[INFO] [stdout] 6 | type CasResult<'g, T> = Either<Shared<'g, Node<T>>, (Shared<'g, Node<T>>, Owned<Node<T>>)>;
[INFO] [stdout]   |      ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `head`, `push`, `cas`, and `cap` are never used
[INFO] [stdout]    --> src/ds/stack.rs:68:12
[INFO] [stdout]     |
[INFO] [stdout] 66  | impl<T: Clone + Send + Sync + 'static> Stack<T> {
[INFO] [stdout]     | ----------------------------------------------- methods in this implementation
[INFO] [stdout] 67  |     /// return current head pointer of the stack
[INFO] [stdout] 68  |     pub fn head<'g>(&self, guard: &'g Guard) -> Shared<'g, Node<T>> {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 72  |     pub fn push(&self, inner: T) {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 105 |     pub fn cas<'g>(
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 131 |     pub fn cap<'g>(
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `guard` is never read
[INFO] [stdout]   --> src/iter.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 7  | pub struct Iter {
[INFO] [stdout]    |            ---- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 13 |     guard: Guard,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `try_lock` are never used
[INFO] [stdout]   --> src/lock.rs:23:18
[INFO] [stdout]    |
[INFO] [stdout] 21 | impl<T> FastLock<T> {
[INFO] [stdout]    | ------------------- associated items in this implementation
[INFO] [stdout] 22 |     #[cfg(not(loom))]
[INFO] [stdout] 23 |     pub const fn new(inner: T) -> FastLock<T> {
[INFO] [stdout]    |                  ^^^
[INFO] [stdout] ...
[INFO] [stdout] 38 |     pub fn try_lock(&self) -> Option<FastLockGuard<'_, T>> {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `pop` is never used
[INFO] [stdout]    --> src/pagecache/ds/stack.rs:111:8
[INFO] [stdout]     |
[INFO] [stdout] 85  | impl<T: Clone + Send + Sync + 'static> Stack<T> {
[INFO] [stdout]     | ----------------------------------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 111 |     fn pop(&self, guard: &Guard) -> Option<T> {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Vec::<T, A>::split_off` that must be used
[INFO] [stdout]    --> src/pagecache/config.rs:403:9
[INFO] [stdout]     |
[INFO] [stdout] 403 |         buf.split_off(len - 4);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: use `.truncate()` if you don't need the other half
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 403 |         let _ = buf.split_off(len - 4);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Vec::<T, A>::split_off` that must be used
[INFO] [stdout]    --> src/pagecache/snapshot.rs:200:5
[INFO] [stdout]     |
[INFO] [stdout] 200 |     buf.split_off(len - 12);
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: use `.truncate()` if you don't need the other half
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 200 |     let _ = buf.split_off(len - 12);
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 14 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]    Compiling regex v1.5.4
[INFO] [stderr]    Compiling env_logger v0.9.0
[INFO] [stderr]    Compiling cloyster v0.1.0-alpha.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Config`
[INFO] [stdout]  --> examples/demo.rs:1:38
[INFO] [stdout]   |
[INFO] [stdout] 1 | use cloyster::pagecache::{self, pin, Config, Materializer};
[INFO] [stdout]   |                                      ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `key` is never read
[INFO] [stdout]   --> examples/demo.rs:38:9
[INFO] [stdout]    |
[INFO] [stdout] 38 |         key = pc
[INFO] [stdout]    |         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `key`
[INFO] [stdout]   --> examples/demo.rs:49:18
[INFO] [stdout]    |
[INFO] [stdout] 49 |         let (mut key, page, size_on_disk) = pc.get(id, &guard).unwrap().unwrap();
[INFO] [stdout]    |                  ^^^ help: if this is intentional, prefix it with an underscore: `_key`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `size_on_disk`
[INFO] [stdout]   --> examples/demo.rs:49:29
[INFO] [stdout]    |
[INFO] [stdout] 49 |         let (mut key, page, size_on_disk) = pc.get(id, &guard).unwrap().unwrap();
[INFO] [stdout]    |                             ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_size_on_disk`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> examples/demo.rs:49:14
[INFO] [stdout]    |
[INFO] [stdout] 49 |         let (mut key, page, size_on_disk) = pc.get(id, &guard).unwrap().unwrap();
[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: unused imports: `Condvar`, `Mutex`
[INFO] [stdout]   --> src/lib.rs:28:27
[INFO] [stdout]    |
[INFO] [stdout] 28 |     pub use parking_lot::{Condvar, Mutex, RwLock};
[INFO] [stdout]    |                           ^^^^^^^  ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `AtomicI64`
[INFO] [stdout]   --> src/lib.rs:43:25
[INFO] [stdout]    |
[INFO] [stdout] 43 |             AtomicBool, AtomicI64, AtomicI64 as AtomicLsn, AtomicU64, AtomicUsize,
[INFO] [stdout]    |                         ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `DoublyLinkedList`, `Item`
[INFO] [stdout]  --> src/pagecache/ds/mod.rs:8:11
[INFO] [stdout]   |
[INFO] [stdout] 8 |     dll::{DoublyLinkedList, Item},
[INFO] [stdout]   |           ^^^^^^^^^^^^^^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::sync::atomic::AtomicU64::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/pagecache/iobuf.rs:861:31
[INFO] [stdout]     |
[INFO] [stdout] 861 |         let res = self.header.compare_and_swap(old, new, SeqCst);
[INFO] [stdout]     |                               ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `node`
[INFO] [stdout]   --> src/ds/dll.rs:70:13
[INFO] [stdout]    |
[INFO] [stdout] 70 |         let node = Node::new(item);
[INFO] [stdout]    |             ^^^^ help: if this is intentional, prefix it with an underscore: `_node`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `remove` are never used
[INFO] [stdout]   --> src/ds/dll.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl<Item> Node<Item> {
[INFO] [stdout]    | --------------------- associated items in this implementation
[INFO] [stdout] 11 |     pub fn new(item: Item) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 19 |     pub fn remove(&mut self) {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `push_head`, `push_tail`, and `len` are never used
[INFO] [stdout]   --> src/ds/dll.rs:57:12
[INFO] [stdout]    |
[INFO] [stdout] 56 | impl<Item> DoublyLinkedList<Item> {
[INFO] [stdout]    | --------------------------------- methods in this implementation
[INFO] [stdout] 57 |     pub fn push_head(&mut self, item: Item) -> *mut Node<Item> {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 68 |     pub fn push_tail(&mut self, item: Item) -> *mut Node<Item> {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 75 |     pub fn len(&self) -> usize {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `CasResult` is never used
[INFO] [stdout]  --> src/ds/stack.rs:6:6
[INFO] [stdout]   |
[INFO] [stdout] 6 | type CasResult<'g, T> = Either<Shared<'g, Node<T>>, (Shared<'g, Node<T>>, Owned<Node<T>>)>;
[INFO] [stdout]   |      ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `head`, `push`, `cas`, and `cap` are never used
[INFO] [stdout]    --> src/ds/stack.rs:68:12
[INFO] [stdout]     |
[INFO] [stdout] 66  | impl<T: Clone + Send + Sync + 'static> Stack<T> {
[INFO] [stdout]     | ----------------------------------------------- methods in this implementation
[INFO] [stdout] 67  |     /// return current head pointer of the stack
[INFO] [stdout] 68  |     pub fn head<'g>(&self, guard: &'g Guard) -> Shared<'g, Node<T>> {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 72  |     pub fn push(&self, inner: T) {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 105 |     pub fn cas<'g>(
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 131 |     pub fn cap<'g>(
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `guard` is never read
[INFO] [stdout]   --> src/iter.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 7  | pub struct Iter {
[INFO] [stdout]    |            ---- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 13 |     guard: Guard,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `try_lock` are never used
[INFO] [stdout]   --> src/lock.rs:23:18
[INFO] [stdout]    |
[INFO] [stdout] 21 | impl<T> FastLock<T> {
[INFO] [stdout]    | ------------------- associated items in this implementation
[INFO] [stdout] 22 |     #[cfg(not(loom))]
[INFO] [stdout] 23 |     pub const fn new(inner: T) -> FastLock<T> {
[INFO] [stdout]    |                  ^^^
[INFO] [stdout] ...
[INFO] [stdout] 38 |     pub fn try_lock(&self) -> Option<FastLockGuard<'_, T>> {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Vec::<T, A>::split_off` that must be used
[INFO] [stdout]    --> src/pagecache/config.rs:403:9
[INFO] [stdout]     |
[INFO] [stdout] 403 |         buf.split_off(len - 4);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: use `.truncate()` if you don't need the other half
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 403 |         let _ = buf.split_off(len - 4);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Vec::<T, A>::split_off` that must be used
[INFO] [stdout]    --> src/pagecache/snapshot.rs:200:5
[INFO] [stdout]     |
[INFO] [stdout] 200 |     buf.split_off(len - 12);
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: use `.truncate()` if you don't need the other half
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 200 |     let _ = buf.split_off(len - 12);
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 4.53s
[INFO] running `Command { std: "docker" "inspect" "7821c1d1cad7bfd416615679ff7fd6dae1f5d1bed9546b3ef2f61a0261d7da96", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7821c1d1cad7bfd416615679ff7fd6dae1f5d1bed9546b3ef2f61a0261d7da96", kill_on_drop: false }`
[INFO] [stdout] 7821c1d1cad7bfd416615679ff7fd6dae1f5d1bed9546b3ef2f61a0261d7da96
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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=warn" "-e" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2024-02-10" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 284e32cd70dea7f5198a3c11ec2e08bc8a9072cb60e0f6034485c45f4be560ce
[INFO] running `Command { std: "docker" "start" "-a" "284e32cd70dea7f5198a3c11ec2e08bc8a9072cb60e0f6034485c45f4be560ce", kill_on_drop: false }`
[INFO] [stderr] warning: unused imports: `Condvar`, `Mutex`
[INFO] [stderr]   --> src/lib.rs:28:27
[INFO] [stderr]    |
[INFO] [stderr] 28 |     pub use parking_lot::{Condvar, Mutex, RwLock};
[INFO] [stderr]    |                           ^^^^^^^  ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `AtomicI64`
[INFO] [stderr]   --> src/lib.rs:43:25
[INFO] [stderr]    |
[INFO] [stderr] 43 |             AtomicBool, AtomicI64, AtomicI64 as AtomicLsn, AtomicU64, AtomicUsize,
[INFO] [stderr]    |                         ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `DoublyLinkedList`, `Item`
[INFO] [stderr]  --> src/pagecache/ds/mod.rs:8:11
[INFO] [stderr]   |
[INFO] [stderr] 8 |     dll::{DoublyLinkedList, Item},
[INFO] [stderr]   |           ^^^^^^^^^^^^^^^^  ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated method `std::sync::atomic::AtomicU64::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stderr]    --> src/pagecache/iobuf.rs:861:31
[INFO] [stderr]     |
[INFO] [stderr] 861 |         let res = self.header.compare_and_swap(old, new, SeqCst);
[INFO] [stderr]     |                               ^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `node`
[INFO] [stderr]   --> src/ds/dll.rs:70:13
[INFO] [stderr]    |
[INFO] [stderr] 70 |         let node = Node::new(item);
[INFO] [stderr]    |             ^^^^ help: if this is intentional, prefix it with an underscore: `_node`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated items `new` and `remove` are never used
[INFO] [stderr]   --> src/ds/dll.rs:11:12
[INFO] [stderr]    |
[INFO] [stderr] 10 | impl<Item> Node<Item> {
[INFO] [stderr]    | --------------------- associated items in this implementation
[INFO] [stderr] 11 |     pub fn new(item: Item) -> Self {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] ...
[INFO] [stderr] 19 |     pub fn remove(&mut self) {
[INFO] [stderr]    |            ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: methods `push_head`, `push_tail`, and `len` are never used
[INFO] [stderr]   --> src/ds/dll.rs:57:12
[INFO] [stderr]    |
[INFO] [stderr] 56 | impl<Item> DoublyLinkedList<Item> {
[INFO] [stderr]    | --------------------------------- methods in this implementation
[INFO] [stderr] 57 |     pub fn push_head(&mut self, item: Item) -> *mut Node<Item> {
[INFO] [stderr]    |            ^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 68 |     pub fn push_tail(&mut self, item: Item) -> *mut Node<Item> {
[INFO] [stderr]    |            ^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 75 |     pub fn len(&self) -> usize {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type alias `CasResult` is never used
[INFO] [stderr]  --> src/ds/stack.rs:6:6
[INFO] [stderr]   |
[INFO] [stderr] 6 | type CasResult<'g, T> = Either<Shared<'g, Node<T>>, (Shared<'g, Node<T>>, Owned<Node<T>>)>;
[INFO] [stderr]   |      ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: methods `head`, `push`, `cas`, and `cap` are never used
[INFO] [stderr]    --> src/ds/stack.rs:68:12
[INFO] [stderr]     |
[INFO] [stderr] 66  | impl<T: Clone + Send + Sync + 'static> Stack<T> {
[INFO] [stderr]     | ----------------------------------------------- methods in this implementation
[INFO] [stderr] 67  |     /// return current head pointer of the stack
[INFO] [stderr] 68  |     pub fn head<'g>(&self, guard: &'g Guard) -> Shared<'g, Node<T>> {
[INFO] [stderr]     |            ^^^^
[INFO] [stderr] ...
[INFO] [stderr] 72  |     pub fn push(&self, inner: T) {
[INFO] [stderr]     |            ^^^^
[INFO] [stderr] ...
[INFO] [stderr] 105 |     pub fn cas<'g>(
[INFO] [stderr]     |            ^^^
[INFO] [stderr] ...
[INFO] [stderr] 131 |     pub fn cap<'g>(
[INFO] [stderr]     |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field `guard` is never read
[INFO] [stderr]   --> src/iter.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 7  | pub struct Iter {
[INFO] [stderr]    |            ---- field in this struct
[INFO] [stderr] ...
[INFO] [stderr] 13 |     guard: Guard,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated items `new` and `try_lock` are never used
[INFO] [stderr]   --> src/lock.rs:23:18
[INFO] [stderr]    |
[INFO] [stderr] 21 | impl<T> FastLock<T> {
[INFO] [stderr]    | ------------------- associated items in this implementation
[INFO] [stderr] 22 |     #[cfg(not(loom))]
[INFO] [stderr] 23 |     pub const fn new(inner: T) -> FastLock<T> {
[INFO] [stderr]    |                  ^^^
[INFO] [stderr] ...
[INFO] [stderr] 38 |     pub fn try_lock(&self) -> Option<FastLockGuard<'_, T>> {
[INFO] [stderr]    |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method `pop` is never used
[INFO] [stderr]    --> src/pagecache/ds/stack.rs:111:8
[INFO] [stderr]     |
[INFO] [stderr] 85  | impl<T: Clone + Send + Sync + 'static> Stack<T> {
[INFO] [stderr]     | ----------------------------------------------- method in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 111 |     fn pop(&self, guard: &Guard) -> Option<T> {
[INFO] [stderr]     |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `Vec::<T, A>::split_off` that must be used
[INFO] [stderr]    --> src/pagecache/config.rs:403:9
[INFO] [stderr]     |
[INFO] [stderr] 403 |         buf.split_off(len - 4);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: use `.truncate()` if you don't need the other half
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 403 |         let _ = buf.split_off(len - 4);
[INFO] [stderr]     |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `Vec::<T, A>::split_off` that must be used
[INFO] [stderr]    --> src/pagecache/snapshot.rs:200:5
[INFO] [stderr]     |
[INFO] [stderr] 200 |     buf.split_off(len - 12);
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: use `.truncate()` if you don't need the other half
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 200 |     let _ = buf.split_off(len - 12);
[INFO] [stderr]     |     +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: `cloyster` (lib) generated 14 warnings (run `cargo fix --lib -p cloyster` to apply 4 suggestions)
[INFO] [stderr] warning: unused import: `Config`
[INFO] [stderr]  --> examples/demo.rs:1:38
[INFO] [stderr]   |
[INFO] [stderr] 1 | use cloyster::pagecache::{self, pin, Config, Materializer};
[INFO] [stderr]   |                                      ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `key` is never read
[INFO] [stderr]   --> examples/demo.rs:38:9
[INFO] [stderr]    |
[INFO] [stderr] 38 |         key = pc
[INFO] [stderr]    |         ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `key`
[INFO] [stderr]   --> examples/demo.rs:49:18
[INFO] [stderr]    |
[INFO] [stderr] 49 |         let (mut key, page, size_on_disk) = pc.get(id, &guard).unwrap().unwrap();
[INFO] [stderr]    |                  ^^^ help: if this is intentional, prefix it with an underscore: `_key`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `size_on_disk`
[INFO] [stderr]   --> examples/demo.rs:49:29
[INFO] [stderr]    |
[INFO] [stderr] 49 |         let (mut key, page, size_on_disk) = pc.get(id, &guard).unwrap().unwrap();
[INFO] [stderr]    |                             ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_size_on_disk`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> examples/demo.rs:49:14
[INFO] [stderr]    |
[INFO] [stderr] 49 |         let (mut key, page, size_on_disk) = pc.get(id, &guard).unwrap().unwrap();
[INFO] [stderr]    |              ----^^^
[INFO] [stderr]    |              |
[INFO] [stderr]    |              help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `cloyster` (lib test) generated 13 warnings (13 duplicates)
[INFO] [stderr] warning: `cloyster` (example "demo") generated 5 warnings (run `cargo fix --example "demo"` to apply 4 suggestions)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/cloyster-d55780051f63e984)
[INFO] [stdout] 
[INFO] [stdout] running 10 tests
[INFO] [stdout] test pagecache::ds::dll::test_dll ... ok
[INFO] [stdout] test pagecache::ds::pagetable::test_split_fanout ... ok
[INFO] [stdout] test pagecache::ds::pagetable::basic_functionality ... ok
[INFO] [stdout] test pagecache::ds::stack::tests::basic_functionality ... ok
[INFO] [stdout] test tree::tests::test_block_persistence ... FAILED
[INFO] [stdout] test tree::tests::test_block_scan_prefix ... ok
[INFO] [stdout] test tree::tests::test_block_range ... ok
[INFO] [stdout] test tree::tests::test_block_insert_get ... ok
[INFO] [stdout] test tree::tests::test_block_iter_count ... ok
[INFO] [stdout] test tree::tests::test_open_block ... ok
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- tree::tests::test_block_persistence stdout ----
[INFO] [stdout] thread 'tree::tests::test_block_persistence' panicked at src/pagecache/config.rs:155:13:
[INFO] [stdout] open file at "./cloyster.db/db": IO error: Read-only file system (os error 30)
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x56139ec953e6 - std::backtrace_rs::backtrace::libunwind::trace::h140b6deb6a45c671
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/std/src/../../backtrace/src/backtrace/libunwind.rs:104:5
[INFO] [stdout]    1:     0x56139ec953e6 - std::backtrace_rs::backtrace::trace_unsynchronized::h8450d7e4e9219aed
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stdout]    2:     0x56139ec953e6 - std::sys_common::backtrace::_print_fmt::hbd28e5e6c6fc3a3f
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/std/src/sys_common/backtrace.rs:68:5
[INFO] [stdout]    3:     0x56139ec953e6 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hb058f285768cf98e
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/std/src/sys_common/backtrace.rs:44:22
[INFO] [stdout]    4:     0x56139ecbfe00 - core::fmt::rt::Argument::fmt::h87dec7a95127da24
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/core/src/fmt/rt.rs:142:9
[INFO] [stdout]    5:     0x56139ecbfe00 - core::fmt::write::h873f89a91a4832db
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/core/src/fmt/mod.rs:1120:17
[INFO] [stdout]    6:     0x56139ec9245f - std::io::Write::write_fmt::h90f651e9e694a4bb
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/std/src/io/mod.rs:1846:15
[INFO] [stdout]    7:     0x56139ec951c4 - std::sys_common::backtrace::_print::h7719d1529d9a9e13
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/std/src/sys_common/backtrace.rs:47:5
[INFO] [stdout]    8:     0x56139ec951c4 - std::sys_common::backtrace::print::haa3afbd0e7947108
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/std/src/sys_common/backtrace.rs:34:9
[INFO] [stdout]    9:     0x56139ec96f37 - std::panicking::default_hook::{{closure}}::h10e3de2ec0eaff22
[INFO] [stdout]   10:     0x56139ec96c1d - std::panicking::default_hook::hbdc1b1b7fe073dab
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/std/src/panicking.rs:289:9
[INFO] [stdout]   11:     0x56139ebe70d7 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h20f7887d7cd0a330
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/alloc/src/boxed.rs:2029:9
[INFO] [stdout]   12:     0x56139ebe70d7 - test::test_main::{{closure}}::hc125a615957b5cb1
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/test/src/lib.rs:138:21
[INFO] [stdout]   13:     0x56139ec97556 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h8c19e0590f8443c4
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/alloc/src/boxed.rs:2029:9
[INFO] [stdout]   14:     0x56139ec97556 - std::panicking::rust_panic_with_hook::hb81692602460473d
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/std/src/panicking.rs:785:13
[INFO] [stdout]   15:     0x56139ec972a2 - std::panicking::begin_panic_handler::{{closure}}::h2470593aa2678e9c
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/std/src/panicking.rs:659:13
[INFO] [stdout]   16:     0x56139ec958e6 - std::sys_common::backtrace::__rust_end_short_backtrace::h560bb50225b0562b
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/std/src/sys_common/backtrace.rs:171:18
[INFO] [stdout]   17:     0x56139ec96ff4 - rust_begin_unwind
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/std/src/panicking.rs:647:5
[INFO] [stdout]   18:     0x56139ea683a5 - core::panicking::panic_fmt::h29b6f262f6458dc3
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/core/src/panicking.rs:72:14
[INFO] [stdout]   19:     0x56139eb47696 - cloyster::pagecache::config::ConfigBuilder::build::{{closure}}::hd84d1f2feb36b365
[INFO] [stdout]                                at /opt/rustwide/workdir/src/pagecache/config.rs:155:13
[INFO] [stdout]   20:     0x56139eb95093 - core::result::Result<T,E>::unwrap_or_else::hc7ca2955531eb80d
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/core/src/result.rs:1426:23
[INFO] [stdout]   21:     0x56139eb473c0 - cloyster::pagecache::config::ConfigBuilder::build::h8c6be9ab8247f610
[INFO] [stdout]                                at /opt/rustwide/workdir/src/pagecache/config.rs:154:20
[INFO] [stdout]   22:     0x56139eab473d - cloyster::context::Context::new::h872f89d2854f0f22
[INFO] [stdout]                                at /opt/rustwide/workdir/src/context.rs:27:13
[INFO] [stdout]   23:     0x56139eb43e15 - cloyster::database::Database::open::h5b1e1543c90768a1
[INFO] [stdout]                                at /opt/rustwide/workdir/src/database.rs:25:23
[INFO] [stdout]   24:     0x56139eb51344 - cloyster::tree::tests::test_block_persistence::hc70b34582d506f36
[INFO] [stdout]                                at /opt/rustwide/workdir/src/tree.rs:277:18
[INFO] [stdout]   25:     0x56139eb512d7 - cloyster::tree::tests::test_block_persistence::{{closure}}::h13be100d14337506
[INFO] [stdout]                                at /opt/rustwide/workdir/src/tree.rs:276:32
[INFO] [stdout]   26:     0x56139eb62606 - core::ops::function::FnOnce::call_once::h10283d3907c61900
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   27:     0x56139ebecccf - core::ops::function::FnOnce::call_once::h692fe6f34484199f
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   28:     0x56139ebecccf - test::__rust_begin_short_backtrace::h48b62e76bd60e2de
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/test/src/lib.rs:621:18
[INFO] [stdout]   29:     0x56139ebebaf1 - test::run_test_in_process::{{closure}}::h1c68597526ef43db
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/test/src/lib.rs:644:60
[INFO] [stdout]   30:     0x56139ebebaf1 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hcae98092997f976b
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   31:     0x56139ebebaf1 - std::panicking::try::do_call::h8d1548c2f5bb535a
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/std/src/panicking.rs:554:40
[INFO] [stdout]   32:     0x56139ebebaf1 - std::panicking::try::hbb7a2054f484688e
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/std/src/panicking.rs:518:19
[INFO] [stdout]   33:     0x56139ebebaf1 - std::panic::catch_unwind::h696d12d9d80497c2
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/std/src/panic.rs:142:14
[INFO] [stdout]   34:     0x56139ebebaf1 - test::run_test_in_process::h053367a7217c825b
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/test/src/lib.rs:644:27
[INFO] [stdout]   35:     0x56139ebebaf1 - test::run_test::{{closure}}::hfa524e9fabcba78e
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/test/src/lib.rs:567:43
[INFO] [stdout]   36:     0x56139ebb2f56 - test::run_test::{{closure}}::h2c4d0bb741ef7f9f
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/test/src/lib.rs:595:41
[INFO] [stdout]   37:     0x56139ebb2f56 - std::sys_common::backtrace::__rust_begin_short_backtrace::h0d2c708415550075
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/std/src/sys_common/backtrace.rs:155:18
[INFO] [stdout]   38:     0x56139ebb7f17 - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h76e2635840d7293f
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/std/src/thread/mod.rs:529:17
[INFO] [stdout]   39:     0x56139ebb7f17 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::haa640b67a810a214
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   40:     0x56139ebb7f17 - std::panicking::try::do_call::h41892e3bc2807ab5
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/std/src/panicking.rs:554:40
[INFO] [stdout]   41:     0x56139ebb7f17 - std::panicking::try::h861a16d180681c80
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/std/src/panicking.rs:518:19
[INFO] [stdout]   42:     0x56139ebb7f17 - std::panic::catch_unwind::h8195f9064b1509fa
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/std/src/panic.rs:142:14
[INFO] [stdout]   43:     0x56139ebb7f17 - std::thread::Builder::spawn_unchecked_::{{closure}}::h73cc419da1217371
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/std/src/thread/mod.rs:528:30
[INFO] [stdout]   44:     0x56139ebb7f17 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h79dc6499ff073b09
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   45:     0x56139ec9ca45 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::ha718e8cdc51a5182
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/alloc/src/boxed.rs:2015:9
[INFO] [stdout]   46:     0x56139ec9ca45 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h86072abc877c5474
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/alloc/src/boxed.rs:2015:9
[INFO] [stdout]   47:     0x56139ec9ca45 - std::sys::pal::unix::thread::Thread::new::thread_start::hac4056197c365894
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/std/src/sys/pal/unix/thread.rs:108:17
[INFO] [stdout]   48:     0x7fda1f670ac3 - <unknown>
[INFO] [stdout]   49:     0x7fda1f701bf4 - __clone
[INFO] [stdout]   50:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     tree::tests::test_block_persistence
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 9 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.05s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass `--lib`
[INFO] running `Command { std: "docker" "inspect" "284e32cd70dea7f5198a3c11ec2e08bc8a9072cb60e0f6034485c45f4be560ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "284e32cd70dea7f5198a3c11ec2e08bc8a9072cb60e0f6034485c45f4be560ce", kill_on_drop: false }`
[INFO] [stdout] 284e32cd70dea7f5198a3c11ec2e08bc8a9072cb60e0f6034485c45f4be560ce
