[INFO] fetching crate rs-collections 0.1.9...
[INFO] linting rs-collections-0.1.9 against nightly for clippy-nonminimal_bool-denied
[INFO] extracting crate rs-collections 0.1.9 into /workspace/builds/worker-5-tc1/source
[INFO] started tweaking crates.io crate rs-collections 0.1.9
[INFO] finished tweaking crates.io crate rs-collections 0.1.9
[INFO] tweaked toml for crates.io crate rs-collections 0.1.9 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate rs-collections 0.1.9 on toolchain nightly
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+nightly" "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" "+nightly" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 4 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+nightly" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rs-mem v0.2.6
[INFO] [stderr]   Downloaded rs-ctypes v0.1.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+nightly" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a4ff7f074041766e2b4044059ea8ce23c19c62bf1cf8af9cf8a8636e49a2b783
[INFO] running `Command { std: "docker" "start" "-a" "a4ff7f074041766e2b4044059ea8ce23c19c62bf1cf8af9cf8a8636e49a2b783", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a4ff7f074041766e2b4044059ea8ce23c19c62bf1cf8af9cf8a8636e49a2b783", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a4ff7f074041766e2b4044059ea8ce23c19c62bf1cf8af9cf8a8636e49a2b783", kill_on_drop: false }`
[INFO] [stdout] a4ff7f074041766e2b4044059ea8ce23c19c62bf1cf8af9cf8a8636e49a2b783
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+nightly" "clippy" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4b1b8be5b94e513100c9b0cbe26b2ed733656f71708f130562ddc8ed83ab974f
[INFO] running `Command { std: "docker" "start" "-a" "4b1b8be5b94e513100c9b0cbe26b2ed733656f71708f130562ddc8ed83ab974f", kill_on_drop: false }`
[INFO] [stderr]     Checking rs-ctypes v0.1.1
[INFO] [stderr]     Checking rs-mem v0.2.6
[INFO] [stderr]     Checking rs-collections v0.1.9 (/opt/rustwide/workdir)
[INFO] [stdout] warning: empty line after outer attribute
[INFO] [stdout]   --> src/lib.rs:31:1
[INFO] [stdout]    |
[INFO] [stdout] 31 | / #[allow(improper_ctypes)]
[INFO] [stdout] 32 | |
[INFO] [stdout]    | |_^
[INFO] [stdout] 33 |   pub mod hash;
[INFO] [stdout]    |   ------------ the attribute applies to this module
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#empty_line_after_outer_attr
[INFO] [stdout]    = note: `#[warn(clippy::empty_line_after_outer_attr)]` on by default
[INFO] [stdout]    = help: if the empty line is unintentional, remove it
[INFO] [stdout] help: if the attribute should apply to the crate use an inner attribute
[INFO] [stdout]    |
[INFO] [stdout] 31 | #![allow(improper_ctypes)]
[INFO] [stdout]    |  +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: redundant field names in struct initialization
[INFO] [stdout]   --> src/string.rs:80:17
[INFO] [stdout]    |
[INFO] [stdout] 80 |         Split { v: v, idx: 0 }
[INFO] [stdout]    |                 ^^^^ help: replace it with: `v`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stdout]    = note: `#[warn(clippy::redundant_field_names)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: empty line after outer attribute
[INFO] [stdout]   --> src/lib.rs:31:1
[INFO] [stdout]    |
[INFO] [stdout] 31 | / #[allow(improper_ctypes)]
[INFO] [stdout] 32 | |
[INFO] [stdout]    | |_^
[INFO] [stdout] 33 |   pub mod hash;
[INFO] [stdout]    |   ------------ the attribute applies to this module
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#empty_line_after_outer_attr
[INFO] [stdout]    = note: `#[warn(clippy::empty_line_after_outer_attr)]` on by default
[INFO] [stdout]    = help: if the empty line is unintentional, remove it
[INFO] [stdout] help: if the attribute should apply to the crate use an inner attribute
[INFO] [stdout]    |
[INFO] [stdout] 31 | #![allow(improper_ctypes)]
[INFO] [stdout]    |  +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: redundant field names in struct initialization
[INFO] [stdout]   --> src/string.rs:80:17
[INFO] [stdout]    |
[INFO] [stdout] 80 |         Split { v: v, idx: 0 }
[INFO] [stdout]    |                 ^^^^ help: replace it with: `v`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stdout]    = note: `#[warn(clippy::redundant_field_names)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/hashmap.rs:84:17
[INFO] [stdout]    |
[INFO] [stdout] 84 |             let mut e = &mut entries[index as usize];
[INFO] [stdout]    |                 ----^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this operation has no effect
[INFO] [stdout]   --> src/hash.rs:55:25
[INFO] [stdout]    |
[INFO] [stdout] 55 |         let mut k = key[i + 0] as u64;
[INFO] [stdout]    |                         ^^^^^ help: consider reducing it to: `i`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#identity_op
[INFO] [stdout]    = note: `#[warn(clippy::identity_op)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: you should consider adding a `Default` implementation for `Vec<T>`
[INFO] [stdout]   --> src/vec.rs:56:5
[INFO] [stdout]    |
[INFO] [stdout] 56 | /     pub fn new() -> Self {
[INFO] [stdout] 57 | |         Self {
[INFO] [stdout] 58 | |             elements: ptr::null_mut(),
[INFO] [stdout] 59 | |             count   : 0,
[INFO] [stdout] ...  |
[INFO] [stdout] 62 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#new_without_default
[INFO] [stdout]    = note: `#[warn(clippy::new_without_default)]` on by default
[INFO] [stdout] help: try adding this
[INFO] [stdout]    |
[INFO] [stdout] 44 + impl<T> Default for Vec<T> {
[INFO] [stdout] 45 +     fn default() -> Self {
[INFO] [stdout] 46 +         Self::new()
[INFO] [stdout] 47 +     }
[INFO] [stdout] 48 + }
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Vec` has a public `len` method, but no `is_empty` method
[INFO] [stdout]   --> src/vec.rs:70:5
[INFO] [stdout]    |
[INFO] [stdout] 70 |     pub fn len(&self) -> usize { self.count }
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_without_is_empty
[INFO] [stdout]    = note: `#[warn(clippy::len_without_is_empty)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of `offset` with a `usize` casted to an `isize`
[INFO] [stdout]   --> src/vec.rs:79:34
[INFO] [stdout]    |
[INFO] [stdout] 79 |                 let v = unsafe { old_ptr.offset(i as isize).read() };    // v = old[i];
[INFO] [stdout]    |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_offset_with_cast
[INFO] [stdout]    = note: `#[warn(clippy::ptr_offset_with_cast)]` on by default
[INFO] [stdout] help: use `add` instead
[INFO] [stdout]    |
[INFO] [stdout] 79 -                 let v = unsafe { old_ptr.offset(i as isize).read() };    // v = old[i];
[INFO] [stdout] 79 +                 let v = unsafe { old_ptr.add(i).read() };    // v = old[i];
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of `offset` with a `usize` casted to an `isize`
[INFO] [stdout]   --> src/vec.rs:80:26
[INFO] [stdout]    |
[INFO] [stdout] 80 |                 unsafe { new_ptr.offset(i as isize).write(v) };          // new[i] = v;
[INFO] [stdout]    |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_offset_with_cast
[INFO] [stdout] help: use `add` instead
[INFO] [stdout]    |
[INFO] [stdout] 80 -                 unsafe { new_ptr.offset(i as isize).write(v) };          // new[i] = v;
[INFO] [stdout] 80 +                 unsafe { new_ptr.add(i).write(v) };          // new[i] = v;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of `offset` with a `usize` casted to an `isize`
[INFO] [stdout]   --> src/vec.rs:87:18
[INFO] [stdout]    |
[INFO] [stdout] 87 |         unsafe { self.elements.offset(self.count as isize).write(t) };
[INFO] [stdout]    |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_offset_with_cast
[INFO] [stdout] help: use `add` instead
[INFO] [stdout]    |
[INFO] [stdout] 87 -         unsafe { self.elements.offset(self.count as isize).write(t) };
[INFO] [stdout] 87 +         unsafe { self.elements.add(self.count).write(t) };
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/hashmap.rs:84:17
[INFO] [stdout]    |
[INFO] [stdout] 84 |             let mut e = &mut entries[index as usize];
[INFO] [stdout]    |                 ----^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the loop variable `i` is only used to index `arr`
[INFO] [stdout]    --> src/vec.rs:115:18
[INFO] [stdout]     |
[INFO] [stdout] 115 |         for i in 0..self.count {
[INFO] [stdout]     |                  ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stdout]     = note: `#[warn(clippy::needless_range_loop)]` on by default
[INFO] [stdout] help: consider using an iterator
[INFO] [stdout]     |
[INFO] [stdout] 115 -         for i in 0..self.count {
[INFO] [stdout] 115 +         for <item> in arr.iter().take(self.count) {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `.into_iter()` call is equivalent to `.iter()` and will not consume the `slice`
[INFO] [stdout]    --> src/vec.rs:122:13
[INFO] [stdout]     |
[INFO] [stdout] 122 |         arr.into_iter()
[INFO] [stdout]     |             ^^^^^^^^^ help: call directly: `iter`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#into_iter_on_ref
[INFO] [stdout]     = note: `#[warn(clippy::into_iter_on_ref)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `.into_iter()` call is equivalent to `.iter()` and will not consume the `slice`
[INFO] [stdout]    --> src/vec.rs:136:25
[INFO] [stdout]     |
[INFO] [stdout] 136 |         self.as_slice().into_iter()
[INFO] [stdout]     |                         ^^^^^^^^^ help: call directly: `iter`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#into_iter_on_ref
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `.into_iter()` call is equivalent to `.iter_mut()` and will not consume the `slice`
[INFO] [stdout]    --> src/vec.rs:140:29
[INFO] [stdout]     |
[INFO] [stdout] 140 |         self.as_mut_slice().into_iter()
[INFO] [stdout]     |                             ^^^^^^^^^ help: call directly: `iter_mut`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#into_iter_on_ref
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this loop could be written as a `while let` loop
[INFO] [stdout]    --> src/vec.rs:170:9
[INFO] [stdout]     |
[INFO] [stdout] 170 | /         loop {
[INFO] [stdout] 171 | |             match it.next() {
[INFO] [stdout] 172 | |                 Some(r) => v.push(r),
[INFO] [stdout] 173 | |                 None => break,
[INFO] [stdout] 174 | |             }
[INFO] [stdout] 175 | |         }
[INFO] [stdout]     | |_________^ help: try: `while let Some(r) = it.next() { .. }`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#while_let_loop
[INFO] [stdout]     = note: `#[warn(clippy::while_let_loop)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `clone` on type `T` which implements the `Copy` trait
[INFO] [stdout]    --> src/vec.rs:188:23
[INFO] [stdout]     |
[INFO] [stdout] 188 |             self.push(e.clone());
[INFO] [stdout]     |                       ^^^^^^^^^ help: try dereferencing it: `*e`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stdout]     = note: `#[warn(clippy::clone_on_copy)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: you should consider adding a `Default` implementation for `HashMap<K, V>`
[INFO] [stdout]   --> src/hashmap.rs:53:5
[INFO] [stdout]    |
[INFO] [stdout] 53 | /     pub fn new() -> Self {
[INFO] [stdout] 54 | |         Self {
[INFO] [stdout] 55 | |             table   : Unique::new(ptr::null_mut()),
[INFO] [stdout] 56 | |             count   : 0,
[INFO] [stdout] ...  |
[INFO] [stdout] 59 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#new_without_default
[INFO] [stdout] help: try adding this
[INFO] [stdout]    |
[INFO] [stdout] 52 + impl<K: Hash + PartialEq, V> Default for HashMap<K, V> {
[INFO] [stdout] 53 +     fn default() -> Self {
[INFO] [stdout] 54 +         Self::new()
[INFO] [stdout] 55 +     }
[INFO] [stdout] 56 + }
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]    --> src/hashmap.rs:210:23
[INFO] [stdout]     |
[INFO] [stdout] 210 |                   if ! ((index <= original_index && original_index < empty_index)
[INFO] [stdout]     |  _______________________^
[INFO] [stdout] 211 | |                     || (original_index < empty_index && empty_index < index)
[INFO] [stdout]     | |____________________________________________________________________________^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout]     = note: `#[warn(clippy::nonminimal_bool)]` on by default
[INFO] [stdout] help: try
[INFO] [stdout]     |
[INFO] [stdout] 210 -                 if ! ((index <= original_index && original_index < empty_index)
[INFO] [stdout] 211 -                     || (original_index < empty_index && empty_index < index)
[INFO] [stdout] 210 +                 if ! (!(original_index >= empty_index || index > original_index && empty_index >= index)
[INFO] [stdout]     |
[INFO] [stdout] 210 -                 if ! ((index <= original_index && original_index < empty_index)
[INFO] [stdout] 211 -                     || (original_index < empty_index && empty_index < index)
[INFO] [stdout] 210 +                 if ! ((empty_index < index || index <= original_index) && original_index < empty_index
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: you should consider adding a `Default` implementation for `String`
[INFO] [stdout]   --> src/string.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     pub fn new() -> Self { Self { data: Vec::new() } }
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#new_without_default
[INFO] [stdout] help: try adding this
[INFO] [stdout]    |
[INFO] [stdout] 12 + impl Default for String {
[INFO] [stdout] 13 +     fn default() -> Self {
[INFO] [stdout] 14 +         Self::new()
[INFO] [stdout] 15 +     }
[INFO] [stdout] 16 + }
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this operation has no effect
[INFO] [stdout]   --> src/hash.rs:55:25
[INFO] [stdout]    |
[INFO] [stdout] 55 |         let mut k = key[i + 0] as u64;
[INFO] [stdout]    |                         ^^^^^ help: consider reducing it to: `i`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#identity_op
[INFO] [stdout]    = note: `#[warn(clippy::identity_op)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `String` has a public `len` method, but no `is_empty` method
[INFO] [stdout]   --> src/string.rs:45:5
[INFO] [stdout]    |
[INFO] [stdout] 45 |     pub fn len(&self) -> usize { self.data.len() }
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_without_is_empty
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: length comparison to zero
[INFO] [stdout]   --> src/string.rs:58:28
[INFO] [stdout]    |
[INFO] [stdout] 58 |                         if st.as_str().len() > 0 {
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^^^^^^^^ help: using `!is_empty` is clearer and more explicit: `!st.as_str().is_empty()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stdout]    = note: `#[warn(clippy::len_zero)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: you should consider adding a `Default` implementation for `Vec<T>`
[INFO] [stdout]   --> src/vec.rs:56:5
[INFO] [stdout]    |
[INFO] [stdout] 56 | /     pub fn new() -> Self {
[INFO] [stdout] 57 | |         Self {
[INFO] [stdout] 58 | |             elements: ptr::null_mut(),
[INFO] [stdout] 59 | |             count   : 0,
[INFO] [stdout] ...  |
[INFO] [stdout] 62 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#new_without_default
[INFO] [stdout]    = note: `#[warn(clippy::new_without_default)]` on by default
[INFO] [stdout] help: try adding this
[INFO] [stdout]    |
[INFO] [stdout] 44 + impl<T> Default for Vec<T> {
[INFO] [stdout] 45 +     fn default() -> Self {
[INFO] [stdout] 46 +         Self::new()
[INFO] [stdout] 47 +     }
[INFO] [stdout] 48 + }
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: length comparison to zero
[INFO] [stdout]   --> src/string.rs:69:28
[INFO] [stdout]    |
[INFO] [stdout] 69 |                         if st.as_str().len() > 0 {
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^^^^^^^^ help: using `!is_empty` is clearer and more explicit: `!st.as_str().is_empty()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the loop variable `i` is used to index `ob`
[INFO] [stdout]    --> src/string.rs:147:18
[INFO] [stdout]     |
[INFO] [stdout] 147 |         for i in 0..self.data.len() {
[INFO] [stdout]     |                  ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stdout] help: consider using an iterator and enumerate()
[INFO] [stdout]     |
[INFO] [stdout] 147 -         for i in 0..self.data.len() {
[INFO] [stdout] 147 +         for (i, <item>) in ob.iter().enumerate().take(self.data.len()) {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Vec` has a public `len` method, but no `is_empty` method
[INFO] [stdout]   --> src/vec.rs:70:5
[INFO] [stdout]    |
[INFO] [stdout] 70 |     pub fn len(&self) -> usize { self.count }
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_without_is_empty
[INFO] [stdout]    = note: `#[warn(clippy::len_without_is_empty)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of `offset` with a `usize` casted to an `isize`
[INFO] [stdout]   --> src/vec.rs:79:34
[INFO] [stdout]    |
[INFO] [stdout] 79 |                 let v = unsafe { old_ptr.offset(i as isize).read() };    // v = old[i];
[INFO] [stdout]    |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_offset_with_cast
[INFO] [stdout]    = note: `#[warn(clippy::ptr_offset_with_cast)]` on by default
[INFO] [stdout] help: use `add` instead
[INFO] [stdout]    |
[INFO] [stdout] 79 -                 let v = unsafe { old_ptr.offset(i as isize).read() };    // v = old[i];
[INFO] [stdout] 79 +                 let v = unsafe { old_ptr.add(i).read() };    // v = old[i];
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of `offset` with a `usize` casted to an `isize`
[INFO] [stdout]   --> src/vec.rs:80:26
[INFO] [stdout]    |
[INFO] [stdout] 80 |                 unsafe { new_ptr.offset(i as isize).write(v) };          // new[i] = v;
[INFO] [stdout]    |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_offset_with_cast
[INFO] [stdout] help: use `add` instead
[INFO] [stdout]    |
[INFO] [stdout] 80 -                 unsafe { new_ptr.offset(i as isize).write(v) };          // new[i] = v;
[INFO] [stdout] 80 +                 unsafe { new_ptr.add(i).write(v) };          // new[i] = v;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of `offset` with a `usize` casted to an `isize`
[INFO] [stdout]   --> src/vec.rs:87:18
[INFO] [stdout]    |
[INFO] [stdout] 87 |         unsafe { self.elements.offset(self.count as isize).write(t) };
[INFO] [stdout]    |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_offset_with_cast
[INFO] [stdout] help: use `add` instead
[INFO] [stdout]    |
[INFO] [stdout] 87 -         unsafe { self.elements.offset(self.count as isize).write(t) };
[INFO] [stdout] 87 +         unsafe { self.elements.add(self.count).write(t) };
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/vec.rs:135:17
[INFO] [stdout]     |
[INFO] [stdout] 135 |     pub fn iter(&self) -> slice::Iter<T> {
[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 |     pub fn iter(&self) -> slice::Iter<'_, T> {
[INFO] [stdout]     |                                       +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/vec.rs:139:21
[INFO] [stdout]     |
[INFO] [stdout] 139 |     pub fn iter_mut(&mut self) -> slice::IterMut<T> {
[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 |     pub fn iter_mut(&mut self) -> slice::IterMut<'_, T> {
[INFO] [stdout]     |                                                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the loop variable `i` is only used to index `arr`
[INFO] [stdout]    --> src/vec.rs:115:18
[INFO] [stdout]     |
[INFO] [stdout] 115 |         for i in 0..self.count {
[INFO] [stdout]     |                  ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stdout]     = note: `#[warn(clippy::needless_range_loop)]` on by default
[INFO] [stdout] help: consider using an iterator
[INFO] [stdout]     |
[INFO] [stdout] 115 -         for i in 0..self.count {
[INFO] [stdout] 115 +         for <item> in arr.iter().take(self.count) {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `.into_iter()` call is equivalent to `.iter()` and will not consume the `slice`
[INFO] [stdout]    --> src/vec.rs:122:13
[INFO] [stdout]     |
[INFO] [stdout] 122 |         arr.into_iter()
[INFO] [stdout]     |             ^^^^^^^^^ help: call directly: `iter`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#into_iter_on_ref
[INFO] [stdout]     = note: `#[warn(clippy::into_iter_on_ref)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `.into_iter()` call is equivalent to `.iter()` and will not consume the `slice`
[INFO] [stdout]    --> src/vec.rs:136:25
[INFO] [stdout]     |
[INFO] [stdout] 136 |         self.as_slice().into_iter()
[INFO] [stdout]     |                         ^^^^^^^^^ help: call directly: `iter`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#into_iter_on_ref
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `.into_iter()` call is equivalent to `.iter_mut()` and will not consume the `slice`
[INFO] [stdout]    --> src/vec.rs:140:29
[INFO] [stdout]     |
[INFO] [stdout] 140 |         self.as_mut_slice().into_iter()
[INFO] [stdout]     |                             ^^^^^^^^^ help: call directly: `iter_mut`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#into_iter_on_ref
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this loop could be written as a `while let` loop
[INFO] [stdout]    --> src/vec.rs:170:9
[INFO] [stdout]     |
[INFO] [stdout] 170 | /         loop {
[INFO] [stdout] 171 | |             match it.next() {
[INFO] [stdout] 172 | |                 Some(r) => v.push(r),
[INFO] [stdout] 173 | |                 None => break,
[INFO] [stdout] 174 | |             }
[INFO] [stdout] 175 | |         }
[INFO] [stdout]     | |_________^ help: try: `while let Some(r) = it.next() { .. }`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#while_let_loop
[INFO] [stdout]     = note: `#[warn(clippy::while_let_loop)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `clone` on type `T` which implements the `Copy` trait
[INFO] [stdout]    --> src/vec.rs:188:23
[INFO] [stdout]     |
[INFO] [stdout] 188 |             self.push(e.clone());
[INFO] [stdout]     |                       ^^^^^^^^^ help: try dereferencing it: `*e`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stdout]     = note: `#[warn(clippy::clone_on_copy)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the variable `counter` is used as a loop counter
[INFO] [stdout]    --> src/vec.rs:253:9
[INFO] [stdout]     |
[INFO] [stdout] 253 |         for i in v.to_iter() {
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^ help: consider using: `for (counter, i) in v.to_iter().enumerate()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#explicit_counter_loop
[INFO] [stdout]     = note: `#[warn(clippy::explicit_counter_loop)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: you should consider adding a `Default` implementation for `HashMap<K, V>`
[INFO] [stdout]   --> src/hashmap.rs:53:5
[INFO] [stdout]    |
[INFO] [stdout] 53 | /     pub fn new() -> Self {
[INFO] [stdout] 54 | |         Self {
[INFO] [stdout] 55 | |             table   : Unique::new(ptr::null_mut()),
[INFO] [stdout] 56 | |             count   : 0,
[INFO] [stdout] ...  |
[INFO] [stdout] 59 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#new_without_default
[INFO] [stdout] help: try adding this
[INFO] [stdout]    |
[INFO] [stdout] 52 + impl<K: Hash + PartialEq, V> Default for HashMap<K, V> {
[INFO] [stdout] 53 +     fn default() -> Self {
[INFO] [stdout] 54 +         Self::new()
[INFO] [stdout] 55 +     }
[INFO] [stdout] 56 + }
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]    --> src/hashmap.rs:210:23
[INFO] [stdout]     |
[INFO] [stdout] 210 |                   if ! ((index <= original_index && original_index < empty_index)
[INFO] [stdout]     |  _______________________^
[INFO] [stdout] 211 | |                     || (original_index < empty_index && empty_index < index)
[INFO] [stdout]     | |____________________________________________________________________________^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout]     = note: `#[warn(clippy::nonminimal_bool)]` on by default
[INFO] [stdout] help: try
[INFO] [stdout]     |
[INFO] [stdout] 210 -                 if ! ((index <= original_index && original_index < empty_index)
[INFO] [stdout] 211 -                     || (original_index < empty_index && empty_index < index)
[INFO] [stdout] 210 +                 if ! (!(original_index >= empty_index || index > original_index && empty_index >= index)
[INFO] [stdout]     |
[INFO] [stdout] 210 -                 if ! ((index <= original_index && original_index < empty_index)
[INFO] [stdout] 211 -                     || (original_index < empty_index && empty_index < index)
[INFO] [stdout] 210 +                 if ! ((empty_index < index || index <= original_index) && original_index < empty_index
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this assertion is always `false`
[INFO] [stdout]    --> src/hashmap.rs:259:25
[INFO] [stdout]     |
[INFO] [stdout] 259 |                 None => assert!(false)
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: replace this with `panic!()` or `unreachable!()`
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assertions_on_constants
[INFO] [stdout]     = note: `#[warn(clippy::assertions_on_constants)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: equality checks against false can be replaced by a negation
[INFO] [stdout]    --> src/hashmap.rs:273:21
[INFO] [stdout]     |
[INFO] [stdout] 273 |             assert!(hm.exist(i) == false);
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^ help: try: `!hm.exist(i)`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#bool_comparison
[INFO] [stdout]     = note: `#[warn(clippy::bool_comparison)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this assertion is always `false`
[INFO] [stdout]    --> src/hashmap.rs:281:25
[INFO] [stdout]     |
[INFO] [stdout] 281 |                 None => assert!(false)
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: replace this with `panic!()` or `unreachable!()`
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assertions_on_constants
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this assertion is always `false`
[INFO] [stdout]    --> src/hashmap.rs:290:25
[INFO] [stdout]     |
[INFO] [stdout] 290 |                 None => assert!(false)
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: replace this with `panic!()` or `unreachable!()`
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assertions_on_constants
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: equality checks against false can be replaced by a negation
[INFO] [stdout]    --> src/hashmap.rs:295:21
[INFO] [stdout]     |
[INFO] [stdout] 295 |             assert!(hm.exist(i) == false);
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^ help: try: `!hm.exist(i)`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#bool_comparison
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this assertion is always `false`
[INFO] [stdout]    --> src/hashmap.rs:321:25
[INFO] [stdout]     |
[INFO] [stdout] 321 |                 None => assert!(false)
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: replace this with `panic!()` or `unreachable!()`
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assertions_on_constants
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: you should consider adding a `Default` implementation for `String`
[INFO] [stdout]   --> src/string.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     pub fn new() -> Self { Self { data: Vec::new() } }
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#new_without_default
[INFO] [stdout] help: try adding this
[INFO] [stdout]    |
[INFO] [stdout] 12 + impl Default for String {
[INFO] [stdout] 13 +     fn default() -> Self {
[INFO] [stdout] 14 +         Self::new()
[INFO] [stdout] 15 +     }
[INFO] [stdout] 16 + }
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `String` has a public `len` method, but no `is_empty` method
[INFO] [stdout]   --> src/string.rs:45:5
[INFO] [stdout]    |
[INFO] [stdout] 45 |     pub fn len(&self) -> usize { self.data.len() }
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_without_is_empty
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: length comparison to zero
[INFO] [stdout]   --> src/string.rs:58:28
[INFO] [stdout]    |
[INFO] [stdout] 58 |                         if st.as_str().len() > 0 {
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^^^^^^^^ help: using `!is_empty` is clearer and more explicit: `!st.as_str().is_empty()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stdout]    = note: `#[warn(clippy::len_zero)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: length comparison to zero
[INFO] [stdout]   --> src/string.rs:69:28
[INFO] [stdout]    |
[INFO] [stdout] 69 |                         if st.as_str().len() > 0 {
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^^^^^^^^ help: using `!is_empty` is clearer and more explicit: `!st.as_str().is_empty()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the loop variable `i` is used to index `ob`
[INFO] [stdout]    --> src/string.rs:147:18
[INFO] [stdout]     |
[INFO] [stdout] 147 |         for i in 0..self.data.len() {
[INFO] [stdout]     |                  ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stdout] help: consider using an iterator and enumerate()
[INFO] [stdout]     |
[INFO] [stdout] 147 -         for i in 0..self.data.len() {
[INFO] [stdout] 147 +         for (i, <item>) in ob.iter().enumerate().take(self.data.len()) {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/vec.rs:135:17
[INFO] [stdout]     |
[INFO] [stdout] 135 |     pub fn iter(&self) -> slice::Iter<T> {
[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 |     pub fn iter(&self) -> slice::Iter<'_, T> {
[INFO] [stdout]     |                                       +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/vec.rs:139:21
[INFO] [stdout]     |
[INFO] [stdout] 139 |     pub fn iter_mut(&mut self) -> slice::IterMut<T> {
[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 |     pub fn iter_mut(&mut self) -> slice::IterMut<'_, T> {
[INFO] [stdout]     |                                                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.52s
[INFO] running `Command { std: "docker" "inspect" "4b1b8be5b94e513100c9b0cbe26b2ed733656f71708f130562ddc8ed83ab974f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4b1b8be5b94e513100c9b0cbe26b2ed733656f71708f130562ddc8ed83ab974f", kill_on_drop: false }`
[INFO] [stdout] 4b1b8be5b94e513100c9b0cbe26b2ed733656f71708f130562ddc8ed83ab974f