[INFO] fetching crate cloyster 0.1.0-alpha.0...
[INFO] checking cloyster-0.1.0-alpha.0 against master#e59540968e0c6fc3c37d92a639b83fc8fcee5e81 for pr-114559
[INFO] extracting crate cloyster 0.1.0-alpha.0 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate cloyster 0.1.0-alpha.0 on toolchain e59540968e0c6fc3c37d92a639b83fc8fcee5e81
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e59540968e0c6fc3c37d92a639b83fc8fcee5e81" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cloyster 0.1.0-alpha.0
[INFO] finished tweaking crates.io crate cloyster 0.1.0-alpha.0
[INFO] tweaked toml for crates.io crate cloyster 0.1.0-alpha.0 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate crates.io crate cloyster 0.1.0-alpha.0 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" "+e59540968e0c6fc3c37d92a639b83fc8fcee5e81" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:5c16f4e6c37141f9fef0bc86f7a492d732943053e42aab8461035881e3f53823" "/opt/rustwide/cargo-home/bin/cargo" "+e59540968e0c6fc3c37d92a639b83fc8fcee5e81" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 46afd009f1f505628ab736acbb499a64dbf3ec2174f9185a1b0a0b7d73e8bb0b
[INFO] running `Command { std: "docker" "start" "-a" "46afd009f1f505628ab736acbb499a64dbf3ec2174f9185a1b0a0b7d73e8bb0b", kill_on_drop: false }`
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[INFO] [stderr]    Compiling thiserror-impl v1.0.30
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[INFO] [stderr]     Checking cloyster v0.1.0-alpha.0 (/opt/rustwide/workdir)
[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:819:31
[INFO] [stdout]     |
[INFO] [stdout] 819 |         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: 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:819:31
[INFO] [stdout]     |
[INFO] [stdout] 819 |         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:62:13
[INFO] [stdout]    |
[INFO] [stdout] 62 |         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: unused variable: `node`
[INFO] [stdout]   --> src/ds/dll.rs:62:13
[INFO] [stdout]    |
[INFO] [stdout] 62 |         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] 15 |     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:49:12
[INFO] [stdout]    |
[INFO] [stdout] 48 | impl<Item> DoublyLinkedList<Item> {
[INFO] [stdout]    | --------------------------------- methods in this implementation
[INFO] [stdout] 49 |     pub fn push_head(&mut self, item: Item) -> *mut Node<Item> {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 60 |     pub fn push_tail(&mut self, item: Item) -> *mut Node<Item> {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 67 |     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:66:12
[INFO] [stdout]     |
[INFO] [stdout] 64  | impl<T: Clone + Send + Sync + 'static> Stack<T> {
[INFO] [stdout]     | ----------------------------------------------- methods in this implementation
[INFO] [stdout] 65  |     /// return current head pointer of the stack
[INFO] [stdout] 66  |     pub fn head<'g>(&self, guard: &'g Guard) -> Shared<'g, Node<T>> {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 70  |     pub fn push(&self, inner: T) {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 100 |     pub fn cas<'g>(
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 126 |     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] 32 |     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:102:8
[INFO] [stdout]     |
[INFO] [stdout] 83  | impl<T: Clone + Send + Sync + 'static> Stack<T> {
[INFO] [stdout]     | ----------------------------------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 102 |     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:385:9
[INFO] [stdout]     |
[INFO] [stdout] 385 |         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] 385 |         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:192:5
[INFO] [stdout]     |
[INFO] [stdout] 192 |     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] 192 |     let _ = buf.split_off(len - 12);
[INFO] [stdout]     |     +++++++
[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] 15 |     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:49:12
[INFO] [stdout]    |
[INFO] [stdout] 48 | impl<Item> DoublyLinkedList<Item> {
[INFO] [stdout]    | --------------------------------- methods in this implementation
[INFO] [stdout] 49 |     pub fn push_head(&mut self, item: Item) -> *mut Node<Item> {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 60 |     pub fn push_tail(&mut self, item: Item) -> *mut Node<Item> {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 67 |     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:66:12
[INFO] [stdout]     |
[INFO] [stdout] 64  | impl<T: Clone + Send + Sync + 'static> Stack<T> {
[INFO] [stdout]     | ----------------------------------------------- methods in this implementation
[INFO] [stdout] 65  |     /// return current head pointer of the stack
[INFO] [stdout] 66  |     pub fn head<'g>(&self, guard: &'g Guard) -> Shared<'g, Node<T>> {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 70  |     pub fn push(&self, inner: T) {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 100 |     pub fn cas<'g>(
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 126 |     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] 32 |     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:385:9
[INFO] [stdout]     |
[INFO] [stdout] 385 |         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] 385 |         let _ = buf.split_off(len - 4);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 11 warnings emitted
[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:192:5
[INFO] [stdout]     |
[INFO] [stdout] 192 |     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] 192 |     let _ = buf.split_off(len - 12);
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Config`
[INFO] [stdout]  --> examples/demo.rs:2:38
[INFO] [stdout]   |
[INFO] [stdout] 2 | 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:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |         key = pc.link(id, key, TestState("c".to_owned()), &guard).unwrap().unwrap();
[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:41:18
[INFO] [stdout]    |
[INFO] [stdout] 41 |         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:41:29
[INFO] [stdout]    |
[INFO] [stdout] 41 |         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:41:14
[INFO] [stdout]    |
[INFO] [stdout] 41 |         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: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.50s
[INFO] running `Command { std: "docker" "inspect" "27cb1fe7fde661500a463e91ac3e2e7c2acf38893f8c0761b45854936afec5ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "27cb1fe7fde661500a463e91ac3e2e7c2acf38893f8c0761b45854936afec5ff", kill_on_drop: false }`
[INFO] [stdout] 27cb1fe7fde661500a463e91ac3e2e7c2acf38893f8c0761b45854936afec5ff
