[INFO] fetching crate bitcoin-cuckoo-cache 0.1.16-alpha.0...
[INFO] checking bitcoin-cuckoo-cache-0.1.16-alpha.0 against master#5518eaa946291f00471af8b254b2a1715f234882 for pr-120393
[INFO] extracting crate bitcoin-cuckoo-cache 0.1.16-alpha.0 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate bitcoin-cuckoo-cache 0.1.16-alpha.0 on toolchain 5518eaa946291f00471af8b254b2a1715f234882
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5518eaa946291f00471af8b254b2a1715f234882" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate bitcoin-cuckoo-cache 0.1.16-alpha.0
[INFO] finished tweaking crates.io crate bitcoin-cuckoo-cache 0.1.16-alpha.0
[INFO] tweaked toml for crates.io crate bitcoin-cuckoo-cache 0.1.16-alpha.0 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5518eaa946291f00471af8b254b2a1715f234882" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5518eaa946291f00471af8b254b2a1715f234882" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+5518eaa946291f00471af8b254b2a1715f234882" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d262d4ad559dc830760ed2ff9c785944ba805012933ad3df26cb507ba368f43a
[INFO] running `Command { std: "docker" "start" "-a" "d262d4ad559dc830760ed2ff9c785944ba805012933ad3df26cb507ba368f43a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d262d4ad559dc830760ed2ff9c785944ba805012933ad3df26cb507ba368f43a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d262d4ad559dc830760ed2ff9c785944ba805012933ad3df26cb507ba368f43a", kill_on_drop: false }`
[INFO] [stdout] d262d4ad559dc830760ed2ff9c785944ba805012933ad3df26cb507ba368f43a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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=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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+5518eaa946291f00471af8b254b2a1715f234882" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 10fe977fbab34664902ea82b68e9ebe929817af46b71bdfc95c30e53a0049873
[INFO] running `Command { std: "docker" "start" "-a" "10fe977fbab34664902ea82b68e9ebe929817af46b71bdfc95c30e53a0049873", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.152
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling memchr v2.7.1
[INFO] [stderr]    Compiling regex-syntax v0.8.2
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling serde v1.0.196
[INFO] [stderr]    Compiling unicode-xid v0.2.4
[INFO] [stderr]    Compiling log v0.4.20
[INFO] [stderr]    Compiling either v1.9.0
[INFO] [stderr]    Compiling pkg-config v0.3.29
[INFO] [stderr]    Compiling termcolor v1.4.1
[INFO] [stderr]    Compiling ahash v0.7.7
[INFO] [stderr]    Compiling num-traits v0.2.17
[INFO] [stderr]    Compiling crossbeam-utils v0.8.19
[INFO] [stderr]    Compiling syn v2.0.48
[INFO] [stderr]    Compiling gimli v0.28.1
[INFO] [stderr]    Compiling adler v1.0.2
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling miniz_oxide v0.7.1
[INFO] [stderr]    Compiling rustc-demangle v0.1.23
[INFO] [stderr]    Compiling serde_json v1.0.113
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]    Compiling ryu v1.0.16
[INFO] [stderr]    Compiling term v0.4.6
[INFO] [stderr]    Compiling itoa v1.0.10
[INFO] [stderr]    Compiling aho-corasick v1.1.2
[INFO] [stderr]    Compiling object v0.32.2
[INFO] [stderr]    Compiling itertools v0.8.2
[INFO] [stderr]    Compiling dunce v1.0.4
[INFO] [stderr]    Compiling shell-words v0.1.0
[INFO] [stderr]    Compiling pathdiff v0.1.0
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling glob v0.3.1
[INFO] [stderr]    Compiling quick-error v1.2.3
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling term-painter v0.2.4
[INFO] [stderr]    Compiling humantime v1.3.0
[INFO] [stderr]    Compiling rustix v0.38.30
[INFO] [stderr]    Compiling os_str_bytes v6.6.1
[INFO] [stderr]    Compiling linux-raw-sys v0.4.13
[INFO] [stderr]    Compiling bitflags v2.4.2
[INFO] [stderr]    Compiling minimal-lexical v0.2.1
[INFO] [stderr]    Compiling clap_lex v0.2.4
[INFO] [stderr]    Compiling libloading v0.8.1
[INFO] [stderr]    Compiling clang-sys v1.7.0
[INFO] [stderr]    Compiling textwrap v0.16.0
[INFO] [stderr]    Compiling home v0.5.9
[INFO] [stderr]    Compiling ppv-lite86 v0.2.17
[INFO] [stderr]    Compiling humantime v2.1.0
[INFO] [stderr]    Compiling bindgen v0.60.1
[INFO] [stderr]    Compiling nom v7.1.3
[INFO] [stderr]    Compiling strsim v0.10.0
[INFO] [stderr]    Compiling num-bigint v0.4.4
[INFO] [stderr]    Compiling byteorder v1.5.0
[INFO] [stderr]    Compiling lazycell v1.3.0
[INFO] [stderr]    Compiling shlex v1.3.0
[INFO] [stderr]    Compiling rustc-hash v1.1.0
[INFO] [stderr]    Compiling peeking_take_while v0.1.2
[INFO] [stderr]     Checking getrandom v0.2.12
[INFO] [stderr]    Compiling num-rational v0.4.1
[INFO] [stderr]    Compiling num-iter v0.1.43
[INFO] [stderr]    Compiling siphasher v0.3.11
[INFO] [stderr]    Compiling parking_lot_core v0.9.9
[INFO] [stderr]    Compiling priority-queue v1.3.2
[INFO] [stderr]    Compiling cc v1.0.83
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling regex-automata v0.4.5
[INFO] [stderr]    Compiling num_cpus v1.16.0
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling hashbrown v0.12.3
[INFO] [stderr]    Compiling phf_shared v0.10.0
[INFO] [stderr]    Compiling addr2line v0.21.0
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling thiserror v1.0.56
[INFO] [stderr]    Compiling clap v3.2.25
[INFO] [stderr]    Compiling which v4.4.2
[INFO] [stderr]    Compiling backtrace v0.3.69
[INFO] [stderr]    Compiling sqlite3-src v0.2.12
[INFO] [stderr]    Compiling openssl-sys v0.9.99
[INFO] [stderr]    Compiling libc-stdhandle v0.1.0
[INFO] [stderr]    Compiling cexpr v0.6.0
[INFO] [stderr]    Compiling phf_generator v0.10.0
[INFO] [stderr]    Compiling cpp_common v0.5.9
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.18
[INFO] [stderr]    Compiling cpp_core v0.6.0
[INFO] [stderr]    Compiling powerfmt v0.2.0
[INFO] [stderr]    Compiling sqlite3-sys v0.12.0
[INFO] [stderr]    Compiling smallvec v1.13.1
[INFO] [stderr]    Compiling scopeguard v1.2.0
[INFO] [stderr]    Compiling lock_api v0.4.11
[INFO] [stderr]    Compiling crossbeam-deque v0.8.5
[INFO] [stderr]    Compiling num-complex v0.4.4
[INFO] [stderr]    Compiling crossbeam-queue v0.3.11
[INFO] [stderr]    Compiling crossbeam-channel v0.5.11
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling raw-cpuid v10.7.0
[INFO] [stderr]    Compiling poison v0.1.0
[INFO] [stderr]    Compiling static_assertions v1.1.0
[INFO] [stderr]    Compiling indoc v1.0.9
[INFO] [stderr]    Compiling time-core v0.1.2
[INFO] [stderr]    Compiling shared-mutex v0.3.1
[INFO] [stderr]    Compiling nix v0.24.3
[INFO] [stderr]    Compiling parking_lot v0.12.1
[INFO] [stderr]    Compiling sqlite3 v0.24.0
[INFO] [stderr]    Compiling crossbeam v0.8.4
[INFO] [stderr]    Compiling synstructure v0.12.6
[INFO] [stderr]    Compiling regex v1.10.3
[INFO] [stderr]    Compiling sqlite v0.25.3
[INFO] [stderr]    Compiling num v0.4.1
[INFO] [stderr]    Compiling env_logger v0.7.1
[INFO] [stderr]    Compiling cpp_build v0.5.9
[INFO] [stderr]    Compiling env_logger v0.9.3
[INFO] [stderr]    Compiling fs2 v0.4.3
[INFO] [stderr]    Compiling errno v0.2.8
[INFO] [stderr]    Compiling socket2 v0.4.10
[INFO] [stderr]    Compiling pnet_sys v0.31.0
[INFO] [stderr]    Compiling atomic v0.5.3
[INFO] [stderr]    Compiling quanta v0.9.3
[INFO] [stderr]    Compiling winapi v0.2.8
[INFO] [stderr]    Compiling time-point v0.1.1
[INFO] [stderr]    Compiling integer-encoding v3.0.4
[INFO] [stderr]    Compiling bitset v0.1.2
[INFO] [stderr]    Compiling atomic-take v1.1.0
[INFO] [stderr]    Compiling comparator v0.3.0
[INFO] [stderr]    Compiling const-default v1.0.0
[INFO] [stderr]    Compiling maplit v1.0.2
[INFO] [stderr]    Compiling atomic_float v0.1.0
[INFO] [stderr]    Compiling multiset v0.0.5
[INFO] [stderr]    Compiling float-ord v0.3.2
[INFO] [stderr]    Compiling same-file v1.0.6
[INFO] [stderr]    Compiling cfg_aliases v0.1.1
[INFO] [stderr]    Compiling serde_derive v1.0.196
[INFO] [stderr]    Compiling cpp_macros v0.5.9
[INFO] [stderr]    Compiling thiserror-impl v1.0.56
[INFO] [stderr]    Compiling qttypes v0.2.11
[INFO] [stderr]    Compiling qmetaobject v0.2.10
[INFO] [stderr]    Compiling qt_macros v0.1.1
[INFO] [stderr]    Compiling qmetaobject_impl v0.2.10
[INFO] [stderr]    Compiling phf_macros v0.10.0
[INFO] [stderr]    Compiling modular-bitfield-impl v0.11.2
[INFO] [stderr]    Compiling derivative v2.2.0
[INFO] [stderr]    Compiling delegate v0.7.0
[INFO] [stderr]    Compiling try-catch v0.2.2
[INFO] [stderr]    Compiling cpp v0.5.9
[INFO] [stderr]    Compiling failure v0.1.8
[INFO] [stderr]    Compiling phf v0.10.1
[INFO] [stderr]    Compiling modular-bitfield v0.11.2
[INFO] [stderr]    Compiling libevent-sys v0.2.6
[INFO] [stderr]     Checking deranged v0.3.11
[INFO] [stderr]     Checking multimap v0.8.3
[INFO] [stderr]     Checking tinyvec v1.6.0
[INFO] [stderr]     Checking serde-big-array v0.4.1
[INFO] [stderr]    Compiling bincode v1.3.3
[INFO] [stderr]    Compiling toml v0.4.10
[INFO] [stderr]     Checking time v0.3.31
[INFO] [stderr]    Compiling ritual_common v0.4.0
[INFO] [stderr]     Checking libevent v0.1.0
[INFO] [stderr]    Compiling qt_ritual_common v0.4.0
[INFO] [stderr]    Compiling ritual_build v0.4.0
[INFO] [stderr]    Compiling qt_ritual_build v0.5.0
[INFO] [stderr]    Compiling qt_core v0.5.0
[INFO] [stderr]    Compiling qt_gui v0.5.0
[INFO] [stderr]     Checking bitcoin-imports v0.1.16-alpha.0
[INFO] [stderr]    Compiling bitcoin-cfg v0.1.16-alpha.0
[INFO] [stderr]    Compiling bitcoin-cuckoo-cache v0.1.16-alpha.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/cuckoocache.rs:266:44
[INFO] [stdout]     |
[INFO] [stdout] 266 |     #[inline] pub fn compute_hashes(&self, e: &Element) -> [u32; 8] {
[INFO] [stdout]     |                                            ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]    --> src/cuckoocache.rs:312:41
[INFO] [stdout]     |
[INFO] [stdout] 312 |     #[inline] pub fn allow_erase(&self, n: u32)  {
[INFO] [stdout]     |                                         ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]    --> src/cuckoocache.rs:333:41
[INFO] [stdout]     |
[INFO] [stdout] 333 |     #[inline] pub fn please_keep(&self, n: u32)  {
[INFO] [stdout]     |                                         ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `new_size`
[INFO] [stdout]    --> src/cuckoocache.rs:411:29
[INFO] [stdout]     |
[INFO] [stdout] 411 |     pub fn setup(&mut self, new_size: u32) -> u32 {
[INFO] [stdout]     |                             ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_new_size`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `bytes`
[INFO] [stdout]    --> src/cuckoocache.rs:456:35
[INFO] [stdout]     |
[INFO] [stdout] 456 |     pub fn setup_bytes(&mut self, bytes: usize) -> u32 {
[INFO] [stdout]     |                                   ^^^^^ help: if this is intentional, prefix it with an underscore: `_bytes`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/cuckoocache.rs:496:40
[INFO] [stdout]     |
[INFO] [stdout] 496 |     #[inline] pub fn insert(&mut self, e: Element)  {
[INFO] [stdout]     |                                        ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/cuckoocache.rs:593:9
[INFO] [stdout]     |
[INFO] [stdout] 593 |         e:     &Element,
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `erase`
[INFO] [stdout]    --> src/cuckoocache.rs:594:9
[INFO] [stdout]     |
[INFO] [stdout] 594 |         erase: bool) -> bool {
[INFO] [stdout]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_erase`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `size`
[INFO] [stdout]   --> src/bit_packed_atomic_flags.rs:49:16
[INFO] [stdout]    |
[INFO] [stdout] 49 |     pub fn new(size: u32) -> Self {
[INFO] [stdout]    |                ^^^^ help: if this is intentional, prefix it with an underscore: `_size`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]   --> src/bit_packed_atomic_flags.rs:78:39
[INFO] [stdout]    |
[INFO] [stdout] 78 |     #[inline] pub fn setup(&mut self, b: u32)  {
[INFO] [stdout]    |                                       ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]   --> src/bit_packed_atomic_flags.rs:99:41
[INFO] [stdout]    |
[INFO] [stdout] 99 |     #[inline] pub fn bit_set(&mut self, s: u32)  {
[INFO] [stdout]    |                                         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]    --> src/bit_packed_atomic_flags.rs:120:43
[INFO] [stdout]     |
[INFO] [stdout] 120 |     #[inline] pub fn bit_unset(&mut self, s: u32)  {
[INFO] [stdout]     |                                           ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]    --> src/bit_packed_atomic_flags.rs:144:40
[INFO] [stdout]     |
[INFO] [stdout] 144 |     #[inline] pub fn bit_is_set(&self, s: u32) -> bool {
[INFO] [stdout]     |                                        ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple fields are never read
[INFO] [stdout]    --> src/cuckoocache.rs:86:5
[INFO] [stdout]     |
[INFO] [stdout] 80  | pub struct Cache<Element,Hash> {
[INFO] [stdout]     |            ----- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 86  |     table:                   Vec<Element>,
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 93  |     size:                    u32,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 102 |     collection_flags:        RefCell<BitPackedAtomicFlags>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 112 |     epoch_flags:             RefCell<Vec<bool>>,
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 124 |     epoch_heuristic_counter: u32,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 141 |     epoch_size:              u32,
[INFO] [stdout]     |     ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 150 |     depth_limit:             u8,
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 159 |     hash_function:           Hash,
[INFO] [stdout]     |     ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `mem` is never read
[INFO] [stdout]   --> src/bit_packed_atomic_flags.rs:27:5
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub struct BitPackedAtomicFlags {
[INFO] [stdout]    |            -------------------- field in this struct
[INFO] [stdout] 27 |     mem: Box<Rc<[AtomicU8]>>,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/cuckoocache.rs:266:44
[INFO] [stdout]     |
[INFO] [stdout] 266 |     #[inline] pub fn compute_hashes(&self, e: &Element) -> [u32; 8] {
[INFO] [stdout]     |                                            ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]    --> src/cuckoocache.rs:312:41
[INFO] [stdout]     |
[INFO] [stdout] 312 |     #[inline] pub fn allow_erase(&self, n: u32)  {
[INFO] [stdout]     |                                         ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]    --> src/cuckoocache.rs:333:41
[INFO] [stdout]     |
[INFO] [stdout] 333 |     #[inline] pub fn please_keep(&self, n: u32)  {
[INFO] [stdout]     |                                         ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `new_size`
[INFO] [stdout]    --> src/cuckoocache.rs:411:29
[INFO] [stdout]     |
[INFO] [stdout] 411 |     pub fn setup(&mut self, new_size: u32) -> u32 {
[INFO] [stdout]     |                             ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_new_size`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `bytes`
[INFO] [stdout]    --> src/cuckoocache.rs:456:35
[INFO] [stdout]     |
[INFO] [stdout] 456 |     pub fn setup_bytes(&mut self, bytes: usize) -> u32 {
[INFO] [stdout]     |                                   ^^^^^ help: if this is intentional, prefix it with an underscore: `_bytes`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/cuckoocache.rs:496:40
[INFO] [stdout]     |
[INFO] [stdout] 496 |     #[inline] pub fn insert(&mut self, e: Element)  {
[INFO] [stdout]     |                                        ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/cuckoocache.rs:593:9
[INFO] [stdout]     |
[INFO] [stdout] 593 |         e:     &Element,
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `erase`
[INFO] [stdout]    --> src/cuckoocache.rs:594:9
[INFO] [stdout]     |
[INFO] [stdout] 594 |         erase: bool) -> bool {
[INFO] [stdout]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_erase`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `size`
[INFO] [stdout]   --> src/bit_packed_atomic_flags.rs:49:16
[INFO] [stdout]    |
[INFO] [stdout] 49 |     pub fn new(size: u32) -> Self {
[INFO] [stdout]    |                ^^^^ help: if this is intentional, prefix it with an underscore: `_size`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]   --> src/bit_packed_atomic_flags.rs:78:39
[INFO] [stdout]    |
[INFO] [stdout] 78 |     #[inline] pub fn setup(&mut self, b: u32)  {
[INFO] [stdout]    |                                       ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]   --> src/bit_packed_atomic_flags.rs:99:41
[INFO] [stdout]    |
[INFO] [stdout] 99 |     #[inline] pub fn bit_set(&mut self, s: u32)  {
[INFO] [stdout]    |                                         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]    --> src/bit_packed_atomic_flags.rs:120:43
[INFO] [stdout]     |
[INFO] [stdout] 120 |     #[inline] pub fn bit_unset(&mut self, s: u32)  {
[INFO] [stdout]     |                                           ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]    --> src/bit_packed_atomic_flags.rs:144:40
[INFO] [stdout]     |
[INFO] [stdout] 144 |     #[inline] pub fn bit_is_set(&self, s: u32) -> bool {
[INFO] [stdout]     |                                        ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple fields are never read
[INFO] [stdout]    --> src/cuckoocache.rs:86:5
[INFO] [stdout]     |
[INFO] [stdout] 80  | pub struct Cache<Element,Hash> {
[INFO] [stdout]     |            ----- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 86  |     table:                   Vec<Element>,
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 93  |     size:                    u32,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 102 |     collection_flags:        RefCell<BitPackedAtomicFlags>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 112 |     epoch_flags:             RefCell<Vec<bool>>,
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 124 |     epoch_heuristic_counter: u32,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 141 |     epoch_size:              u32,
[INFO] [stdout]     |     ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 150 |     depth_limit:             u8,
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 159 |     hash_function:           Hash,
[INFO] [stdout]     |     ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `mem` is never read
[INFO] [stdout]   --> src/bit_packed_atomic_flags.rs:27:5
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub struct BitPackedAtomicFlags {
[INFO] [stdout]    |            -------------------- field in this struct
[INFO] [stdout] 27 |     mem: Box<Rc<[AtomicU8]>>,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 15 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 15 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 12s
[INFO] running `Command { std: "docker" "inspect" "10fe977fbab34664902ea82b68e9ebe929817af46b71bdfc95c30e53a0049873", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "10fe977fbab34664902ea82b68e9ebe929817af46b71bdfc95c30e53a0049873", kill_on_drop: false }`
[INFO] [stdout] 10fe977fbab34664902ea82b68e9ebe929817af46b71bdfc95c30e53a0049873
