[INFO] cloning repository https://github.com/djpatra/rust-experiments
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/djpatra/rust-experiments" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdjpatra%2Frust-experiments", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdjpatra%2Frust-experiments'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ddefce0eba4917906f77e46c999f856e442fb4df
[INFO] checking djpatra/rust-experiments against try#a2a6e871b05c7b8ecc9a3c8a20db1f39e995e399 for pr-145770
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdjpatra%2Frust-experiments" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/djpatra/rust-experiments
[INFO] finished tweaking git repo https://github.com/djpatra/rust-experiments
[INFO] tweaked toml for git repo https://github.com/djpatra/rust-experiments written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/djpatra/rust-experiments on toolchain a2a6e871b05c7b8ecc9a3c8a20db1f39e995e399
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a2a6e871b05c7b8ecc9a3c8a20db1f39e995e399" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/djpatra/rust-experiments 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" "+a2a6e871b05c7b8ecc9a3c8a20db1f39e995e399" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+a2a6e871b05c7b8ecc9a3c8a20db1f39e995e399" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dd1b8ba8df55360fb30ca8525ed84e309413d56f42cce3230d7448290092b336
[INFO] running `Command { std: "docker" "start" "-a" "dd1b8ba8df55360fb30ca8525ed84e309413d56f42cce3230d7448290092b336", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dd1b8ba8df55360fb30ca8525ed84e309413d56f42cce3230d7448290092b336", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dd1b8ba8df55360fb30ca8525ed84e309413d56f42cce3230d7448290092b336", kill_on_drop: false }`
[INFO] [stdout] dd1b8ba8df55360fb30ca8525ed84e309413d56f42cce3230d7448290092b336
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+a2a6e871b05c7b8ecc9a3c8a20db1f39e995e399" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0e1840ee68427663632f044f2a435f8f58aefaeac64ffb4de338d6f634c658bc
[INFO] running `Command { std: "docker" "start" "-a" "0e1840ee68427663632f044f2a435f8f58aefaeac64ffb4de338d6f634c658bc", kill_on_drop: false }`
[INFO] [stderr]    Compiling crossbeam-utils v0.8.21
[INFO] [stderr]    Compiling rayon-core v1.12.1
[INFO] [stderr]     Checking either v1.15.0
[INFO] [stderr]     Checking crossbeam-epoch v0.9.18
[INFO] [stderr]     Checking crossbeam-deque v0.8.6
[INFO] [stderr]     Checking rayon v1.10.0
[INFO] [stderr]     Checking ds v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: type `node_type` should have an upper camel case name
[INFO] [stdout]   --> src/deep_copy.rs:18:6
[INFO] [stdout]    |
[INFO] [stdout] 18 | type node_type = Rc<RefCell<Node>>;
[INFO] [stdout]    |      ^^^^^^^^^ help: convert the identifier to upper camel case: `NodeType`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]   --> src/quick_sort.rs:35:9
[INFO] [stdout]    |
[INFO] [stdout] 35 |     let s = v.as_mut_ptr();
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `simple_pivot` is never used
[INFO] [stdout]  --> src/quick_sort.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn simple_pivot<T: PartialOrd>(v: &mut[T]) -> usize {
[INFO] [stdout]   |    ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `simple_quick_sort` is never used
[INFO] [stdout]   --> src/quick_sort.rs:15:4
[INFO] [stdout]    |
[INFO] [stdout] 15 | fn simple_quick_sort<T: PartialOrd>(v: &mut [T]) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `RawSend` is never constructed
[INFO] [stdout]   --> src/quick_sort.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 26 | struct RawSend<T>(*mut [T]);
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `threaded_quick_sort` is never used
[INFO] [stdout]   --> src/quick_sort.rs:30:4
[INFO] [stdout]    |
[INFO] [stdout] 30 | fn threaded_quick_sort<T: 'static + PartialOrd + Send>(v: &mut [T]) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Link` is never used
[INFO] [stdout]  --> src/lru_cache.rs:3:6
[INFO] [stdout]   |
[INFO] [stdout] 3 | type Link = *mut Node;
[INFO] [stdout]   |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Node` is never constructed
[INFO] [stdout]  --> src/lru_cache.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | struct Node {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Dll` is never constructed
[INFO] [stdout]   --> src/lru_cache.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | struct Dll {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `LruCache` is never constructed
[INFO] [stdout]   --> src/lru_cache.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 19 | struct LruCache {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `push_front`, `remove`, and `pop_tail` are never used
[INFO] [stdout]   --> src/lru_cache.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 24 | impl Dll {
[INFO] [stdout]    | -------- associated items in this implementation
[INFO] [stdout] 25 |     fn new(capacity: i32) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 51 |     fn push_front(&mut self, node: Link) {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 63 |     fn remove(&mut self, node: Link) {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 72 |     fn pop_tail(&mut self) -> Link {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `get`, and `put` are never used
[INFO] [stdout]    --> src/lru_cache.rs:83:8
[INFO] [stdout]     |
[INFO] [stdout] 81  | impl LruCache {
[INFO] [stdout]     | ------------- associated items in this implementation
[INFO] [stdout] 82  |
[INFO] [stdout] 83  |     fn new(capacity: i32) -> Self {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 90  |     fn get(&mut self, key: i32) -> i32 {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 102 |     fn put(&mut self, key: i32, value: i32) {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Node` is never constructed
[INFO] [stdout]  --> src/deep_copy.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | struct Node {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/deep_copy.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 9  | impl Node {
[INFO] [stdout]    | --------- associated function in this implementation
[INFO] [stdout] 10 |     fn new(val: i32) -> Rc<RefCell<Self>> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `node_type` is never used
[INFO] [stdout]   --> src/deep_copy.rs:18:6
[INFO] [stdout]    |
[INFO] [stdout] 18 | type node_type = Rc<RefCell<Node>>;
[INFO] [stdout]    |      ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `clone` is never used
[INFO] [stdout]   --> src/deep_copy.rs:20:4
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn clone(root: Rc<RefCell<Node>>) -> Rc<RefCell<Node>> {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Box::<T>::from_raw` that must be used
[INFO] [stdout]    --> src/lru_cache.rs:107:21
[INFO] [stdout]     |
[INFO] [stdout] 107 |                     Box::from_raw(evict_node);
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: call `drop(Box::from_raw(ptr))` if you intend to drop the `Box`
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 107 |                     let _ = Box::from_raw(evict_node);
[INFO] [stdout]     |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `node_type` should have an upper camel case name
[INFO] [stdout]   --> src/deep_copy.rs:18:6
[INFO] [stdout]    |
[INFO] [stdout] 18 | type node_type = Rc<RefCell<Node>>;
[INFO] [stdout]    |      ^^^^^^^^^ help: convert the identifier to upper camel case: `NodeType`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]   --> src/quick_sort.rs:35:9
[INFO] [stdout]    |
[INFO] [stdout] 35 |     let s = v.as_mut_ptr();
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `simple_pivot` is never used
[INFO] [stdout]  --> src/quick_sort.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn simple_pivot<T: PartialOrd>(v: &mut[T]) -> usize {
[INFO] [stdout]   |    ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `simple_quick_sort` is never used
[INFO] [stdout]   --> src/quick_sort.rs:15:4
[INFO] [stdout]    |
[INFO] [stdout] 15 | fn simple_quick_sort<T: PartialOrd>(v: &mut [T]) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `RawSend` is never constructed
[INFO] [stdout]   --> src/quick_sort.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 26 | struct RawSend<T>(*mut [T]);
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `threaded_quick_sort` is never used
[INFO] [stdout]   --> src/quick_sort.rs:30:4
[INFO] [stdout]    |
[INFO] [stdout] 30 | fn threaded_quick_sort<T: 'static + PartialOrd + Send>(v: &mut [T]) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Link` is never used
[INFO] [stdout]  --> src/lru_cache.rs:3:6
[INFO] [stdout]   |
[INFO] [stdout] 3 | type Link = *mut Node;
[INFO] [stdout]   |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Node` is never constructed
[INFO] [stdout]  --> src/lru_cache.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | struct Node {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Dll` is never constructed
[INFO] [stdout]   --> src/lru_cache.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | struct Dll {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `LruCache` is never constructed
[INFO] [stdout]   --> src/lru_cache.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 19 | struct LruCache {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `push_front`, `remove`, and `pop_tail` are never used
[INFO] [stdout]   --> src/lru_cache.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 24 | impl Dll {
[INFO] [stdout]    | -------- associated items in this implementation
[INFO] [stdout] 25 |     fn new(capacity: i32) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 51 |     fn push_front(&mut self, node: Link) {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 63 |     fn remove(&mut self, node: Link) {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 72 |     fn pop_tail(&mut self) -> Link {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `get`, and `put` are never used
[INFO] [stdout]    --> src/lru_cache.rs:83:8
[INFO] [stdout]     |
[INFO] [stdout] 81  | impl LruCache {
[INFO] [stdout]     | ------------- associated items in this implementation
[INFO] [stdout] 82  |
[INFO] [stdout] 83  |     fn new(capacity: i32) -> Self {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 90  |     fn get(&mut self, key: i32) -> i32 {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 102 |     fn put(&mut self, key: i32, value: i32) {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Node` is never constructed
[INFO] [stdout]  --> src/deep_copy.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | struct Node {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/deep_copy.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 9  | impl Node {
[INFO] [stdout]    | --------- associated function in this implementation
[INFO] [stdout] 10 |     fn new(val: i32) -> Rc<RefCell<Self>> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `node_type` is never used
[INFO] [stdout]   --> src/deep_copy.rs:18:6
[INFO] [stdout]    |
[INFO] [stdout] 18 | type node_type = Rc<RefCell<Node>>;
[INFO] [stdout]    |      ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `clone` is never used
[INFO] [stdout]   --> src/deep_copy.rs:20:4
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn clone(root: Rc<RefCell<Node>>) -> Rc<RefCell<Node>> {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Box::<T>::from_raw` that must be used
[INFO] [stdout]    --> src/lru_cache.rs:107:21
[INFO] [stdout]     |
[INFO] [stdout] 107 |                     Box::from_raw(evict_node);
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: call `drop(Box::from_raw(ptr))` if you intend to drop the `Box`
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 107 |                     let _ = Box::from_raw(evict_node);
[INFO] [stdout]     |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.63s
[INFO] running `Command { std: "docker" "inspect" "0e1840ee68427663632f044f2a435f8f58aefaeac64ffb4de338d6f634c658bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0e1840ee68427663632f044f2a435f8f58aefaeac64ffb4de338d6f634c658bc", kill_on_drop: false }`
[INFO] [stdout] 0e1840ee68427663632f044f2a435f8f58aefaeac64ffb4de338d6f634c658bc
