[INFO] fetching crate hash-trie 0.4.0...
[INFO] checking hash-trie-0.4.0 against master#642c19bfc3a5c1de985bf5d0cc8207ac9d22708a for pr-148577
[INFO] extracting crate hash-trie 0.4.0 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate hash-trie 0.4.0
[INFO] finished tweaking crates.io crate hash-trie 0.4.0
[INFO] tweaked toml for crates.io crate hash-trie 0.4.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate hash-trie 0.4.0 on toolchain 642c19bfc3a5c1de985bf5d0cc8207ac9d22708a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate hash-trie 0.4.0 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" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded memoffset v0.6.3
[INFO] [stderr]   Downloaded crossbeam-epoch v0.9.4
[INFO] [stderr]   Downloaded crossbeam-utils v0.8.4
[INFO] [stderr]   Downloaded im v15.0.0
[INFO] [stderr]   Downloaded libc v0.2.94
[INFO] [stderr]   Downloaded rand_xoshiro v0.4.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c7373460b5fdc9ad823ab930c9d70f94750e9ee18c06f509db3cec36a9ceb536
[INFO] running `Command { std: "docker" "start" "-a" "c7373460b5fdc9ad823ab930c9d70f94750e9ee18c06f509db3cec36a9ceb536", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c7373460b5fdc9ad823ab930c9d70f94750e9ee18c06f509db3cec36a9ceb536", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c7373460b5fdc9ad823ab930c9d70f94750e9ee18c06f509db3cec36a9ceb536", kill_on_drop: false }`
[INFO] [stdout] c7373460b5fdc9ad823ab930c9d70f94750e9ee18c06f509db3cec36a9ceb536
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a52fda3a7ce0bafbdfb0d2ee2ab4c9aeafb04838f2bc171cb262c4ed512b7ef6
[INFO] running `Command { std: "docker" "start" "-a" "a52fda3a7ce0bafbdfb0d2ee2ab4c9aeafb04838f2bc171cb262c4ed512b7ef6", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.94
[INFO] [stderr]    Compiling typenum v1.13.0
[INFO] [stderr]    Compiling getrandom v0.2.2
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]     Checking hash-trie v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]    --> src/bit_indexed_array.rs:163:5
[INFO] [stdout]     |
[INFO] [stdout] 163 |     #[must_use]
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout]     |
[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]     = help: `#[must_use]` can be applied to data types, foreign functions, functions, inherent methods, provided trait methods, required trait methods, traits, and unions
[INFO] [stdout]     = note: `#[warn(unused_attributes)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]    --> src/bit_indexed_array.rs:168:5
[INFO] [stdout]     |
[INFO] [stdout] 168 |     #[must_use]
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout]     |
[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]     = help: `#[must_use]` can be applied to data types, foreign functions, functions, inherent methods, provided trait methods, required trait methods, traits, and unions
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]    --> src/bit_indexed_array.rs:188:5
[INFO] [stdout]     |
[INFO] [stdout] 188 |     #[must_use]
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout]     |
[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]     = help: `#[must_use]` can be applied to data types, foreign functions, functions, inherent methods, provided trait methods, required trait methods, traits, and unions
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]    --> src/bit_indexed_array.rs:193:5
[INFO] [stdout]     |
[INFO] [stdout] 193 |     #[must_use]
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout]     |
[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]     = help: `#[must_use]` can be applied to data types, foreign functions, functions, inherent methods, provided trait methods, required trait methods, traits, and unions
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]    --> src/bit_indexed_array.rs:217:5
[INFO] [stdout]     |
[INFO] [stdout] 217 |     #[must_use]
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout]     |
[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]     = help: `#[must_use]` can be applied to data types, foreign functions, functions, inherent methods, provided trait methods, required trait methods, traits, and unions
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]    --> src/bit_indexed_array.rs:222:5
[INFO] [stdout]     |
[INFO] [stdout] 222 |     #[must_use]
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout]     |
[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]     = help: `#[must_use]` can be applied to data types, foreign functions, functions, inherent methods, provided trait methods, required trait methods, traits, and unions
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]    --> src/bit_indexed_array.rs:245:5
[INFO] [stdout]     |
[INFO] [stdout] 245 |     #[must_use]
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout]     |
[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]     = help: `#[must_use]` can be applied to data types, foreign functions, functions, inherent methods, provided trait methods, required trait methods, traits, and unions
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]    --> src/bit_indexed_array.rs:250:5
[INFO] [stdout]     |
[INFO] [stdout] 250 |     #[must_use]
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout]     |
[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]     = help: `#[must_use]` can be applied to data types, foreign functions, functions, inherent methods, provided trait methods, required trait methods, traits, and unions
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking rand_xoshiro v0.4.0
[INFO] [stderr]    Compiling im v15.0.0
[INFO] [stderr]     Checking rand_core v0.6.2
[INFO] [stderr]     Checking rand_chacha v0.3.0
[INFO] [stderr]     Checking rand v0.8.3
[INFO] [stdout] warning: methods `inserted_bit_index`, `updated_bit_index`, and `removed_bit_index` are never used
[INFO] [stdout]   --> src/bit_indexed_array.rs:43:8
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub(crate) trait BitIndexedArray<B, V: Clone, E: Clone>: 'static {
[INFO] [stdout]    |                  --------------- methods in this trait
[INFO] [stdout] ...
[INFO] [stdout] 43 |     fn inserted_bit_index(&self, index: usize, value: Cow<V>, extra: Cow<E>) -> Result<Box<dyn BitIndexedArray::<B, V, E>>, BitError>;
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 44 |     fn updated(&self, bit: B, value: Cow<V>, extra: Cow<E>) -> Result<Box<dyn BitIndexedArray::<B, V, E>>, BitError>;
[INFO] [stdout] 45 |     fn updated_bit_index(&self, index: usize, value: Cow<V>, extra: Cow<E>) -> Result<Box<dyn BitIndexedArray::<B, V, E>>, BitError>;
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 46 |     fn removed(&self, bit: B, extra: Cow<E>) -> Result<Box<dyn BitIndexedArray::<B, V, E>>, BitError>;
[INFO] [stdout] 47 |     fn removed_bit_index(&self, index: usize, extra: Cow<E>) -> Result<Box<dyn BitIndexedArray::<B, V, E>>, BitError>;
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/bit_indexed_array.rs:135:13
[INFO] [stdout]     |
[INFO] [stdout] 135 |     fn iter(&self) -> core::slice::Iter<V> {
[INFO] [stdout]     |             ^^^^^     ^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |             |
[INFO] [stdout]     |             the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 135 |     fn iter(&self) -> core::slice::Iter<'_, V> {
[INFO] [stdout]     |                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/bit_indexed_array.rs:139:17
[INFO] [stdout]     |
[INFO] [stdout] 139 |     fn iter_mut(&mut self) -> core::slice::IterMut<V> {
[INFO] [stdout]     |                 ^^^^^^^^^     ^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 139 |     fn iter_mut(&mut self) -> core::slice::IterMut<'_, V> {
[INFO] [stdout]     |                                                    +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/node/mnode.rs:22:32
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pub(crate) fn find<L: Key>(&self, key: &L, flag: Option<Flag<H, F>>) -> FindResult<K, V>
[INFO] [stdout]    |                                ^^^^^ the lifetime is elided here            ^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pub(crate) fn find<L: Key>(&self, key: &L, flag: Option<Flag<H, F>>) -> FindResult<'_, K, V>
[INFO] [stdout]    |                                                                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/node/mnode.rs:33:56
[INFO] [stdout]    |
[INFO] [stdout] 33 | ...>, W: Into<V>>(&self, key: L, value: W, flag: Option<Flag<H, F>>, replace: bool) -> InsertResult<H, F, K, V, M>
[INFO] [stdout]    |                   ^^^^^ the lifetime is elided here                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 33 |     pub(crate) fn insert<L: Key + Into<K>, W: Into<V>>(&self, key: L, value: W, flag: Option<Flag<H, F>>, replace: bool) -> InsertResult<'_, H, F, K, V, M>
[INFO] [stdout]    |                                                                                                                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/node/mnode.rs:46:34
[INFO] [stdout]    |
[INFO] [stdout] 46 | ...emove<L: Key>(&self, key: &L, flag: Option<Flag<H, F>>) -> RemoveResult<H, F, K, V, M> where K: PartialEq<L>, M: HasherBv<H, L> {
[INFO] [stdout]    |                  ^^^^^ the lifetime is elided here            ^^^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 46 |     pub(crate) fn remove<L: Key>(&self, key: &L, flag: Option<Flag<H, F>>) -> RemoveResult<'_, H, F, K, V, M> where K: PartialEq<L>, M: HasherBv<H, L> {
[INFO] [stdout]    |                                                                                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/node/snode.rs:42:124
[INFO] [stdout]    |
[INFO] [stdout] 42 | ...>>(this: &Arc<SNode<K, V>>, key: L, value: W, key_flag: Option<Flag<H, F>>, replace: bool) -> InsertResult<H, F, K, V, M>
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^ the lifetime is elided here                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 42 | pub(super) fn insert<H: Hashword, F: Flagword<H>, K: Key, V: Value, L: Key + Into<K>, W: Into<V>, M: HasherBv<H, K>>(this: &Arc<SNode<K, V>>, key: L, value: W, key_flag: Option<Flag<H, F>>, replace: bool) -> InsertResult<'_, H, F, K, V, M>
[INFO] [stdout]    |                                                                                                                                                                                                                              +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking bitmaps v2.1.0
[INFO] [stderr]     Checking sized-chunks v0.6.5
[INFO] [stdout] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]    --> src/bit_indexed_array.rs:163:5
[INFO] [stdout]     |
[INFO] [stdout] 163 |     #[must_use]
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout]     |
[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]     = help: `#[must_use]` can be applied to data types, foreign functions, functions, inherent methods, provided trait methods, required trait methods, traits, and unions
[INFO] [stdout]     = note: `#[warn(unused_attributes)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]    --> src/bit_indexed_array.rs:168:5
[INFO] [stdout]     |
[INFO] [stdout] 168 |     #[must_use]
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout]     |
[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]     = help: `#[must_use]` can be applied to data types, foreign functions, functions, inherent methods, provided trait methods, required trait methods, traits, and unions
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]    --> src/bit_indexed_array.rs:188:5
[INFO] [stdout]     |
[INFO] [stdout] 188 |     #[must_use]
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout]     |
[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]     = help: `#[must_use]` can be applied to data types, foreign functions, functions, inherent methods, provided trait methods, required trait methods, traits, and unions
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]    --> src/bit_indexed_array.rs:193:5
[INFO] [stdout]     |
[INFO] [stdout] 193 |     #[must_use]
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout]     |
[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]     = help: `#[must_use]` can be applied to data types, foreign functions, functions, inherent methods, provided trait methods, required trait methods, traits, and unions
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]    --> src/bit_indexed_array.rs:217:5
[INFO] [stdout]     |
[INFO] [stdout] 217 |     #[must_use]
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout]     |
[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]     = help: `#[must_use]` can be applied to data types, foreign functions, functions, inherent methods, provided trait methods, required trait methods, traits, and unions
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]    --> src/bit_indexed_array.rs:222:5
[INFO] [stdout]     |
[INFO] [stdout] 222 |     #[must_use]
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout]     |
[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]     = help: `#[must_use]` can be applied to data types, foreign functions, functions, inherent methods, provided trait methods, required trait methods, traits, and unions
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]    --> src/bit_indexed_array.rs:245:5
[INFO] [stdout]     |
[INFO] [stdout] 245 |     #[must_use]
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout]     |
[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]     = help: `#[must_use]` can be applied to data types, foreign functions, functions, inherent methods, provided trait methods, required trait methods, traits, and unions
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]    --> src/bit_indexed_array.rs:250:5
[INFO] [stdout]     |
[INFO] [stdout] 250 |     #[must_use]
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout]     |
[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]     = help: `#[must_use]` can be applied to data types, foreign functions, functions, inherent methods, provided trait methods, required trait methods, traits, and unions
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `inserted_bit_index` and `removed_bit_index` are never used
[INFO] [stdout]   --> src/bit_indexed_array.rs:43:8
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub(crate) trait BitIndexedArray<B, V: Clone, E: Clone>: 'static {
[INFO] [stdout]    |                  --------------- methods in this trait
[INFO] [stdout] ...
[INFO] [stdout] 43 |     fn inserted_bit_index(&self, index: usize, value: Cow<V>, extra: Cow<E>) -> Result<Box<dyn BitIndexedArray::<B, V, E>>, BitError>;
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 47 |     fn removed_bit_index(&self, index: usize, extra: Cow<E>) -> Result<Box<dyn BitIndexedArray::<B, V, E>>, BitError>;
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/bit_indexed_array.rs:135:13
[INFO] [stdout]     |
[INFO] [stdout] 135 |     fn iter(&self) -> core::slice::Iter<V> {
[INFO] [stdout]     |             ^^^^^     ^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |             |
[INFO] [stdout]     |             the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 135 |     fn iter(&self) -> core::slice::Iter<'_, V> {
[INFO] [stdout]     |                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/bit_indexed_array.rs:139:17
[INFO] [stdout]     |
[INFO] [stdout] 139 |     fn iter_mut(&mut self) -> core::slice::IterMut<V> {
[INFO] [stdout]     |                 ^^^^^^^^^     ^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 139 |     fn iter_mut(&mut self) -> core::slice::IterMut<'_, V> {
[INFO] [stdout]     |                                                    +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/node/mnode.rs:22:32
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pub(crate) fn find<L: Key>(&self, key: &L, flag: Option<Flag<H, F>>) -> FindResult<K, V>
[INFO] [stdout]    |                                ^^^^^ the lifetime is elided here            ^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pub(crate) fn find<L: Key>(&self, key: &L, flag: Option<Flag<H, F>>) -> FindResult<'_, K, V>
[INFO] [stdout]    |                                                                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/node/mnode.rs:33:56
[INFO] [stdout]    |
[INFO] [stdout] 33 | ...>, W: Into<V>>(&self, key: L, value: W, flag: Option<Flag<H, F>>, replace: bool) -> InsertResult<H, F, K, V, M>
[INFO] [stdout]    |                   ^^^^^ the lifetime is elided here                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 33 |     pub(crate) fn insert<L: Key + Into<K>, W: Into<V>>(&self, key: L, value: W, flag: Option<Flag<H, F>>, replace: bool) -> InsertResult<'_, H, F, K, V, M>
[INFO] [stdout]    |                                                                                                                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/node/mnode.rs:46:34
[INFO] [stdout]    |
[INFO] [stdout] 46 | ...emove<L: Key>(&self, key: &L, flag: Option<Flag<H, F>>) -> RemoveResult<H, F, K, V, M> where K: PartialEq<L>, M: HasherBv<H, L> {
[INFO] [stdout]    |                  ^^^^^ the lifetime is elided here            ^^^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 46 |     pub(crate) fn remove<L: Key>(&self, key: &L, flag: Option<Flag<H, F>>) -> RemoveResult<'_, H, F, K, V, M> where K: PartialEq<L>, M: HasherBv<H, L> {
[INFO] [stdout]    |                                                                                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/node/snode.rs:42:124
[INFO] [stdout]    |
[INFO] [stdout] 42 | ...>>(this: &Arc<SNode<K, V>>, key: L, value: W, key_flag: Option<Flag<H, F>>, replace: bool) -> InsertResult<H, F, K, V, M>
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^ the lifetime is elided here                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 42 | pub(super) fn insert<H: Hashword, F: Flagword<H>, K: Key, V: Value, L: Key + Into<K>, W: Into<V>, M: HasherBv<H, K>>(this: &Arc<SNode<K, V>>, key: L, value: W, key_flag: Option<Flag<H, F>>, replace: bool) -> InsertResult<'_, H, F, K, V, M>
[INFO] [stdout]    |                                                                                                                                                                                                                              +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.13s
[INFO] running `Command { std: "docker" "inspect" "a52fda3a7ce0bafbdfb0d2ee2ab4c9aeafb04838f2bc171cb262c4ed512b7ef6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a52fda3a7ce0bafbdfb0d2ee2ab4c9aeafb04838f2bc171cb262c4ed512b7ef6", kill_on_drop: false }`
[INFO] [stdout] a52fda3a7ce0bafbdfb0d2ee2ab4c9aeafb04838f2bc171cb262c4ed512b7ef6
