[INFO] cloning repository https://github.com/styladev/lfu-fast
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/styladev/lfu-fast" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstyladev%2Flfu-fast", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstyladev%2Flfu-fast'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3a7191c8754ed065c273601fb60ab5f3b2d1b2b4
[INFO] checking styladev/lfu-fast against master#33fdb797f59421c7bbecaa4588ed5d7a31a9494a for pr-87190-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstyladev%2Flfu-fast" "/workspace/builds/worker-53/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-53/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/styladev/lfu-fast on toolchain 33fdb797f59421c7bbecaa4588ed5d7a31a9494a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/styladev/lfu-fast
[INFO] finished tweaking git repo https://github.com/styladev/lfu-fast
[INFO] tweaked toml for git repo https://github.com/styladev/lfu-fast written to /workspace/builds/worker-53/source/Cargo.toml
[INFO] crate git repo https://github.com/styladev/lfu-fast already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] eb48ada6c1b7d77315db6631d79b6ac6cb6d7e49ea615f68e38fa6ea787ff1e6
[INFO] running `Command { std: "docker" "start" "-a" "eb48ada6c1b7d77315db6631d79b6ac6cb6d7e49ea615f68e38fa6ea787ff1e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "eb48ada6c1b7d77315db6631d79b6ac6cb6d7e49ea615f68e38fa6ea787ff1e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eb48ada6c1b7d77315db6631d79b6ac6cb6d7e49ea615f68e38fa6ea787ff1e6", kill_on_drop: false }`
[INFO] [stdout] eb48ada6c1b7d77315db6631d79b6ac6cb6d7e49ea615f68e38fa6ea787ff1e6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 78b0712cc5c27f649aaabf88dda22a4aff5bb37bf6fe5d5155f71bb62283eddf
[INFO] running `Command { std: "docker" "start" "-a" "78b0712cc5c27f649aaabf88dda22a4aff5bb37bf6fe5d5155f71bb62283eddf", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.74
[INFO] [stderr]    Compiling bumpalo v3.2.0
[INFO] [stderr]    Compiling wee_alloc v0.4.5
[INFO] [stderr]     Checking once_cell v1.8.0
[INFO] [stderr]    Compiling wasm-bindgen v0.2.74
[INFO] [stderr]     Checking memory_units v0.4.0
[INFO] [stderr]    Compiling ahash v0.7.4
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking hashbrown v0.11.2
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.74
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.74
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.74
[INFO] [stderr]     Checking lfu v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `core::iter::repeat`
[INFO] [stdout]   --> src/lib.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | use core::iter::repeat;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::iter::repeat`
[INFO] [stdout]   --> src/lib.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | use core::iter::repeat;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: private type `Lfu` in public interface (error E0446)
[INFO] [stdout]    --> src/lib.rs:209:1
[INFO] [stdout]     |
[INFO] [stdout] 209 | #[wasm_bindgen]
[INFO] [stdout]     | ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(private_in_public)]` on by default
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
[INFO] [stdout]     = note: this warning originates in the attribute macro `wasm_bindgen::prelude::__wasm_bindgen_class_marker` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `heap`
[INFO] [stdout]   --> src/lib.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 |     heap: Vec<(T, usize)>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `indices`
[INFO] [stdout]   --> src/lib.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 |     indices: HashMap<T, usize>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `max_size`
[INFO] [stdout]   --> src/lib.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 25 |     max_size: usize,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `num_items`
[INFO] [stdout]   --> src/lib.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 26 |     num_items: usize,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/lib.rs:30:8
[INFO] [stdout]    |
[INFO] [stdout] 30 |     fn new(capacity: usize) -> LfuInner<T> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `clear`
[INFO] [stdout]   --> src/lib.rs:40:12
[INFO] [stdout]    |
[INFO] [stdout] 40 |     pub fn clear(&mut self) {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `refer`
[INFO] [stdout]   --> src/lib.rs:47:12
[INFO] [stdout]    |
[INFO] [stdout] 47 |     pub fn refer(&mut self, val: T) -> Option<T> {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `insert`
[INFO] [stdout]   --> src/lib.rs:65:8
[INFO] [stdout]    |
[INFO] [stdout] 65 |     fn insert(&mut self, val: &T) -> Option<T> {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `increment`
[INFO] [stdout]    --> src/lib.rs:143:8
[INFO] [stdout]     |
[INFO] [stdout] 143 |     fn increment(&mut self, index: usize) {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `heapify`
[INFO] [stdout]    --> src/lib.rs:154:8
[INFO] [stdout]     |
[INFO] [stdout] 154 |     fn heapify(&mut self, index: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `lfu`
[INFO] [stdout]    --> src/lib.rs:206:5
[INFO] [stdout]     |
[INFO] [stdout] 206 |     lfu: LfuInner<String>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> src/lib.rs:212:12
[INFO] [stdout]     |
[INFO] [stdout] 212 |     pub fn new(capacity: u32) -> Lfu {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `clear`
[INFO] [stdout]    --> src/lib.rs:218:12
[INFO] [stdout]     |
[INFO] [stdout] 218 |     pub fn clear(&mut self) {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: private type `Lfu` in public interface (error E0446)
[INFO] [stdout]    --> src/lib.rs:209:1
[INFO] [stdout]     |
[INFO] [stdout] 209 | #[wasm_bindgen]
[INFO] [stdout]     | ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(private_in_public)]` on by default
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
[INFO] [stdout]     = note: this warning originates in the attribute macro `wasm_bindgen::prelude::__wasm_bindgen_class_marker` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `refer`
[INFO] [stdout]    --> src/lib.rs:222:12
[INFO] [stdout]     |
[INFO] [stdout] 222 |     pub fn refer(&mut self, val: String) -> Option<String> {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `heap`
[INFO] [stdout]   --> src/lib.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 |     heap: Vec<(T, usize)>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `indices`
[INFO] [stdout]   --> src/lib.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 |     indices: HashMap<T, usize>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `max_size`
[INFO] [stdout]   --> src/lib.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 25 |     max_size: usize,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `num_items`
[INFO] [stdout]   --> src/lib.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 26 |     num_items: usize,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/lib.rs:30:8
[INFO] [stdout]    |
[INFO] [stdout] 30 |     fn new(capacity: usize) -> LfuInner<T> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `clear`
[INFO] [stdout]   --> src/lib.rs:40:12
[INFO] [stdout]    |
[INFO] [stdout] 40 |     pub fn clear(&mut self) {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `refer`
[INFO] [stdout]   --> src/lib.rs:47:12
[INFO] [stdout]    |
[INFO] [stdout] 47 |     pub fn refer(&mut self, val: T) -> Option<T> {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `insert`
[INFO] [stdout]   --> src/lib.rs:65:8
[INFO] [stdout]    |
[INFO] [stdout] 65 |     fn insert(&mut self, val: &T) -> Option<T> {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `increment`
[INFO] [stdout]    --> src/lib.rs:143:8
[INFO] [stdout]     |
[INFO] [stdout] 143 |     fn increment(&mut self, index: usize) {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `heapify`
[INFO] [stdout]    --> src/lib.rs:154:8
[INFO] [stdout]     |
[INFO] [stdout] 154 |     fn heapify(&mut self, index: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `lfu`
[INFO] [stdout]    --> src/lib.rs:206:5
[INFO] [stdout]     |
[INFO] [stdout] 206 |     lfu: LfuInner<String>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> src/lib.rs:212:12
[INFO] [stdout]     |
[INFO] [stdout] 212 |     pub fn new(capacity: u32) -> Lfu {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `clear`
[INFO] [stdout]    --> src/lib.rs:218:12
[INFO] [stdout]     |
[INFO] [stdout] 218 |     pub fn clear(&mut self) {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `refer`
[INFO] [stdout]    --> src/lib.rs:222:12
[INFO] [stdout]     |
[INFO] [stdout] 222 |     pub fn refer(&mut self, val: String) -> Option<String> {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 16 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 16 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 24.70s
[INFO] running `Command { std: "docker" "inspect" "78b0712cc5c27f649aaabf88dda22a4aff5bb37bf6fe5d5155f71bb62283eddf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "78b0712cc5c27f649aaabf88dda22a4aff5bb37bf6fe5d5155f71bb62283eddf", kill_on_drop: false }`
[INFO] [stdout] 78b0712cc5c27f649aaabf88dda22a4aff5bb37bf6fe5d5155f71bb62283eddf