[INFO] fetching crate polodb_bson 2.0.0...
[INFO] checking polodb_bson-2.0.0 against 5c543b0b8c73c7b72bc8284ced4fb22ead15734d for pr-160186
[INFO] extracting crate polodb_bson 2.0.0 into /workspace/builds/worker-1-tc1/source
[INFO] started tweaking crates.io crate polodb_bson 2.0.0
[INFO] finished tweaking crates.io crate polodb_bson 2.0.0
[INFO] tweaked toml for crates.io crate polodb_bson 2.0.0 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate polodb_bson 2.0.0 on toolchain 5c543b0b8c73c7b72bc8284ced4fb22ead15734d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5c543b0b8c73c7b72bc8284ced4fb22ead15734d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5c543b0b8c73c7b72bc8284ced4fb22ead15734d" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 12 packages to highest compatible versions
[INFO] [stderr]       Adding getrandom v0.2.17 (available: v0.4.3)
[INFO] [stderr]       Adding hashbrown v0.11.2 (available: v0.17.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5c543b0b8c73c7b72bc8284ced4fb22ead15734d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 4ba714b21e1562c046fa00f78f1afa2dbd2a0fd61e43b85922946ae5e95f6910
[INFO] running `Command { std: "docker" "start" "4ba714b21e1562c046fa00f78f1afa2dbd2a0fd61e43b85922946ae5e95f6910", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4ba714b21e1562c046fa00f78f1afa2dbd2a0fd61e43b85922946ae5e95f6910", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "4ba714b21e1562c046fa00f78f1afa2dbd2a0fd61e43b85922946ae5e95f6910" "/opt/rustwide/cargo-home/bin/cargo" "+5c543b0b8c73c7b72bc8284ced4fb22ead15734d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4ba714b21e1562c046fa00f78f1afa2dbd2a0fd61e43b85922946ae5e95f6910", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "4ba714b21e1562c046fa00f78f1afa2dbd2a0fd61e43b85922946ae5e95f6910" "/opt/rustwide/cargo-home/bin/cargo" "+5c543b0b8c73c7b72bc8284ced4fb22ead15734d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.191
[INFO] [stderr]    Compiling ahash v0.7.8
[INFO] [stderr]     Checking once_cell v1.21.4
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]     Checking rmp v0.8.15
[INFO] [stderr]     Checking getrandom v0.2.17
[INFO] [stderr]     Checking hashbrown v0.11.2
[INFO] [stderr]     Checking polodb_bson v2.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unexpected `cfg` condition value: `clippy`
[INFO] [stdout]  --> linked_hash_map/mod.rs:2:13
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![cfg_attr(feature = "clippy", feature(plugin))]
[INFO] [stdout]   |             ^^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]   |
[INFO] [stdout]   = note: no expected values for `feature`
[INFO] [stdout]   = help: consider adding `clippy` as a feature in `Cargo.toml`
[INFO] [stdout]   = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]   = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `clippy`
[INFO] [stdout]  --> linked_hash_map/mod.rs:3:13
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![cfg_attr(feature = "clippy", plugin(clippy))]
[INFO] [stdout]   |             ^^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]   |
[INFO] [stdout]   = note: no expected values for `feature`
[INFO] [stdout]   = help: consider adding `clippy` as a feature in `Cargo.toml`
[INFO] [stdout]   = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `clippy`
[INFO] [stdout]  --> linked_hash_map/mod.rs:4:13
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![cfg_attr(feature = "clippy", deny(clippy))]
[INFO] [stdout]   |             ^^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]   |
[INFO] [stdout]   = note: no expected values for `feature`
[INFO] [stdout]   = help: consider adding `clippy` as a feature in `Cargo.toml`
[INFO] [stdout]   = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `nightly`
[INFO] [stdout]     --> linked_hash_map/mod.rs:1268:11
[INFO] [stdout]      |
[INFO] [stdout] 1268 | #[cfg(all(feature = "nightly", test))]
[INFO] [stdout]      |           ^^^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]      |
[INFO] [stdout]      = note: no expected values for `feature`
[INFO] [stdout]      = help: consider adding `nightly` as a feature in `Cargo.toml`
[INFO] [stdout]      = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `clippy`
[INFO] [stdout]  --> linked_hash_map/mod.rs:2:13
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![cfg_attr(feature = "clippy", feature(plugin))]
[INFO] [stdout]   |             ^^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]   |
[INFO] [stdout]   = note: no expected values for `feature`
[INFO] [stdout]   = help: consider adding `clippy` as a feature in `Cargo.toml`
[INFO] [stdout]   = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]   = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `clippy`
[INFO] [stdout]  --> linked_hash_map/mod.rs:3:13
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![cfg_attr(feature = "clippy", plugin(clippy))]
[INFO] [stdout]   |             ^^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]   |
[INFO] [stdout]   = note: no expected values for `feature`
[INFO] [stdout]   = help: consider adding `clippy` as a feature in `Cargo.toml`
[INFO] [stdout]   = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `clippy`
[INFO] [stdout]  --> linked_hash_map/mod.rs:4:13
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![cfg_attr(feature = "clippy", deny(clippy))]
[INFO] [stdout]   |             ^^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]   |
[INFO] [stdout]   = note: no expected values for `feature`
[INFO] [stdout]   = help: consider adding `clippy` as a feature in `Cargo.toml`
[INFO] [stdout]   = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `nightly`
[INFO] [stdout]     --> linked_hash_map/mod.rs:1268:11
[INFO] [stdout]      |
[INFO] [stdout] 1268 | #[cfg(all(feature = "nightly", test))]
[INFO] [stdout]      |           ^^^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]      |
[INFO] [stdout]      = note: no expected values for `feature`
[INFO] [stdout]      = help: consider adding `nightly` as a feature in `Cargo.toml`
[INFO] [stdout]      = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `core::num::<impl u32>::max_value`: replaced by the `MAX` associated constant on this type
[INFO] [stdout]    --> object_id.rs:138:33
[INFO] [stdout]     |
[INFO] [stdout] 138 |         if self.counter == u32::max_value() {
[INFO] [stdout]     |                                 ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `core::num::<impl u32>::max_value`: replaced by the `MAX` associated constant on this type
[INFO] [stdout]    --> object_id.rs:138:33
[INFO] [stdout]     |
[INFO] [stdout] 138 |         if self.counter == u32::max_value() {
[INFO] [stdout]     |                                 ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> document.rs:359:17
[INFO] [stdout]     |
[INFO] [stdout] 359 |     pub fn iter(&self) -> Iter<String, Value> {
[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] 359 |     pub fn iter(&self) -> Iter<'_, String, Value> {
[INFO] [stdout]     |                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> array.rs:47:17
[INFO] [stdout]    |
[INFO] [stdout] 47 |     pub fn iter(&self) -> Iter {
[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] 47 |     pub fn iter(&self) -> Iter<'_> {
[INFO] [stdout]    |                               ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Box::<T>::from_raw` that must be used
[INFO] [stdout]    --> linked_hash_map/mod.rs:115:13
[INFO] [stdout]     |
[INFO] [stdout] 115 |             Box::from_raw(cur);
[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)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _unused = ...` to ignore the resulting value without dropping it immediately
[INFO] [stdout]     |
[INFO] [stdout] 115 |             let _unused = Box::from_raw(cur);
[INFO] [stdout]     |             +++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> linked_hash_map/mod.rs:199:18
[INFO] [stdout]     |
[INFO] [stdout] 199 |     pub fn entry(&mut self, k: K) -> Entry<K, V, S> {
[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] 199 |     pub fn entry(&mut self, k: K) -> Entry<'_, K, V, S> {
[INFO] [stdout]     |                                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> linked_hash_map/mod.rs:238:20
[INFO] [stdout]     |
[INFO] [stdout] 238 |     pub fn entries(&mut self) -> Entries<K, V, S> {
[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] 238 |     pub fn entries(&mut self) -> Entries<'_, K, V, S> {
[INFO] [stdout]     |                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> linked_hash_map/mod.rs:567:17
[INFO] [stdout]     |
[INFO] [stdout] 567 |     pub fn iter(&self) -> Iter<K, 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] 567 |     pub fn iter(&self) -> Iter<'_, K, V> {
[INFO] [stdout]     |                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> linked_hash_map/mod.rs:601:21
[INFO] [stdout]     |
[INFO] [stdout] 601 |     pub fn iter_mut(&mut self) -> IterMut<K, 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] 601 |     pub fn iter_mut(&mut self) -> IterMut<'_, K, V> {
[INFO] [stdout]     |                                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> linked_hash_map/mod.rs:632:17
[INFO] [stdout]     |
[INFO] [stdout] 632 |     pub fn keys(&self) -> Keys<K, 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] 632 |     pub fn keys(&self) -> Keys<'_, K, V> {
[INFO] [stdout]     |                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> linked_hash_map/mod.rs:653:19
[INFO] [stdout]     |
[INFO] [stdout] 653 |     pub fn values(&self) -> Values<K, 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] 653 |     pub fn values(&self) -> Values<'_, K, V> {
[INFO] [stdout]     |                                    +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Box::<T>::from_raw` that must be used
[INFO] [stdout]     --> linked_hash_map/mod.rs:1017:17
[INFO] [stdout]      |
[INFO] [stdout] 1017 |                 Box::from_raw(self.tail);
[INFO] [stdout]      |                 ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: call `drop(Box::from_raw(ptr))` if you intend to drop the `Box`
[INFO] [stdout] help: use `let _unused = ...` to ignore the resulting value without dropping it immediately
[INFO] [stdout]      |
[INFO] [stdout] 1017 |                 let _unused = Box::from_raw(self.tail);
[INFO] [stdout]      |                 +++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> document.rs:359:17
[INFO] [stdout]     |
[INFO] [stdout] 359 |     pub fn iter(&self) -> Iter<String, Value> {
[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] 359 |     pub fn iter(&self) -> Iter<'_, String, Value> {
[INFO] [stdout]     |                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> array.rs:47:17
[INFO] [stdout]    |
[INFO] [stdout] 47 |     pub fn iter(&self) -> Iter {
[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] 47 |     pub fn iter(&self) -> Iter<'_> {
[INFO] [stdout]    |                               ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Box::<T>::from_raw` that must be used
[INFO] [stdout]    --> linked_hash_map/mod.rs:115:13
[INFO] [stdout]     |
[INFO] [stdout] 115 |             Box::from_raw(cur);
[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)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _unused = ...` to ignore the resulting value without dropping it immediately
[INFO] [stdout]     |
[INFO] [stdout] 115 |             let _unused = Box::from_raw(cur);
[INFO] [stdout]     |             +++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> linked_hash_map/mod.rs:199:18
[INFO] [stdout]     |
[INFO] [stdout] 199 |     pub fn entry(&mut self, k: K) -> Entry<K, V, S> {
[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] 199 |     pub fn entry(&mut self, k: K) -> Entry<'_, K, V, S> {
[INFO] [stdout]     |                                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> linked_hash_map/mod.rs:238:20
[INFO] [stdout]     |
[INFO] [stdout] 238 |     pub fn entries(&mut self) -> Entries<K, V, S> {
[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] 238 |     pub fn entries(&mut self) -> Entries<'_, K, V, S> {
[INFO] [stdout]     |                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> linked_hash_map/mod.rs:567:17
[INFO] [stdout]     |
[INFO] [stdout] 567 |     pub fn iter(&self) -> Iter<K, 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] 567 |     pub fn iter(&self) -> Iter<'_, K, V> {
[INFO] [stdout]     |                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> linked_hash_map/mod.rs:601:21
[INFO] [stdout]     |
[INFO] [stdout] 601 |     pub fn iter_mut(&mut self) -> IterMut<K, 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] 601 |     pub fn iter_mut(&mut self) -> IterMut<'_, K, V> {
[INFO] [stdout]     |                                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> linked_hash_map/mod.rs:632:17
[INFO] [stdout]     |
[INFO] [stdout] 632 |     pub fn keys(&self) -> Keys<K, 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] 632 |     pub fn keys(&self) -> Keys<'_, K, V> {
[INFO] [stdout]     |                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> linked_hash_map/mod.rs:653:19
[INFO] [stdout]     |
[INFO] [stdout] 653 |     pub fn values(&self) -> Values<K, 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] 653 |     pub fn values(&self) -> Values<'_, K, V> {
[INFO] [stdout]     |                                    +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Box::<T>::from_raw` that must be used
[INFO] [stdout]     --> linked_hash_map/mod.rs:1017:17
[INFO] [stdout]      |
[INFO] [stdout] 1017 |                 Box::from_raw(self.tail);
[INFO] [stdout]      |                 ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: call `drop(Box::from_raw(ptr))` if you intend to drop the `Box`
[INFO] [stdout] help: use `let _unused = ...` to ignore the resulting value without dropping it immediately
[INFO] [stdout]      |
[INFO] [stdout] 1017 |                 let _unused = Box::from_raw(self.tail);
[INFO] [stdout]      |                 +++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.78s
[INFO] running `Command { std: "docker" "inspect" "4ba714b21e1562c046fa00f78f1afa2dbd2a0fd61e43b85922946ae5e95f6910", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4ba714b21e1562c046fa00f78f1afa2dbd2a0fd61e43b85922946ae5e95f6910", kill_on_drop: false }`
[INFO] [stdout] 4ba714b21e1562c046fa00f78f1afa2dbd2a0fd61e43b85922946ae5e95f6910
