Oct 12 23:33:06.686 INFO checking cliffcrosland/search_index against try#4021bd0b3c5815b087d6db10ce461e7e4854ade7 for pr-54977
Oct 12 23:33:06.686 INFO running `"docker" "create" "-v" "/mnt/big/crater/./work/local/target-dirs/pr-54977/worker-4/try#4021bd0b3c5815b087d6db10ce461e7e4854ade7:/target:rw,Z" "-v" "/mnt/big/crater/./work/local/test-source/worker-4/pr-54977/try#4021bd0b3c5815b087d6db10ce461e7e4854ade7:/source:ro,Z" "-v" "/mnt/big/crater/./work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/./work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +4021bd0b3c5815b087d6db10ce461e7e4854ade7-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Oct 12 23:33:07.196 INFO blam! e4a54b9f59d156b46b70c3321bc5609a7202b319f0a86703a73f510f0d7661a1
Oct 12 23:33:07.200 INFO running `"docker" "start" "-a" "e4a54b9f59d156b46b70c3321bc5609a7202b319f0a86703a73f510f0d7661a1"`
Oct 12 23:33:08.417 INFO kablam! usermod: no changes
Oct 12 23:33:08.496 INFO kablam!     Checking search_index v0.1.0 (/source)
Oct 12 23:33:09.996 INFO kablam! warning: field is never used: `next_free`
Oct 12 23:33:09.996 INFO kablam!   --> src/generational_arena.rs:16:5
Oct 12 23:33:09.996 INFO kablam!    |
Oct 12 23:33:09.996 INFO kablam! 16 |     next_free: Option<usize>,
Oct 12 23:33:09.996 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^^
Oct 12 23:33:09.996 INFO kablam!    |
Oct 12 23:33:09.996 INFO kablam!    = note: #[warn(dead_code)] on by default
Oct 12 23:33:09.996 INFO kablam! 
Oct 12 23:33:09.996 INFO kablam! warning: field is never used: `len`
Oct 12 23:33:09.996 INFO kablam!   --> src/generational_arena.rs:19:5
Oct 12 23:33:09.996 INFO kablam!    |
Oct 12 23:33:09.996 INFO kablam! 19 |     len: usize,
Oct 12 23:33:09.996 INFO kablam!    |     ^^^^^^^^^^
Oct 12 23:33:09.996 INFO kablam! 
Oct 12 23:33:09.996 INFO kablam! warning: struct is never constructed: `Slot`
Oct 12 23:33:09.996 INFO kablam!   --> src/generational_arena.rs:34:1
Oct 12 23:33:09.996 INFO kablam!    |
Oct 12 23:33:09.996 INFO kablam! 34 | struct Slot<T> {
Oct 12 23:33:09.996 INFO kablam!    | ^^^^^^^^^^^^^^
Oct 12 23:33:09.996 INFO kablam! 
Oct 12 23:33:09.996 INFO kablam! warning: method is never used: `new`
Oct 12 23:33:09.996 INFO kablam!   --> src/generational_arena.rs:41:5
Oct 12 23:33:09.996 INFO kablam!    |
Oct 12 23:33:09.996 INFO kablam! 41 |     pub fn new() -> GenerationalArena<T> {
Oct 12 23:33:09.996 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 12 23:33:09.997 INFO kablam! 
Oct 12 23:33:09.997 INFO kablam! warning: method is never used: `insert`
Oct 12 23:33:09.997 INFO kablam!   --> src/generational_arena.rs:50:5
Oct 12 23:33:09.997 INFO kablam!    |
Oct 12 23:33:09.998 INFO kablam! 50 |     pub fn insert(&mut self, value: T) -> GenerationalId {
Oct 12 23:33:09.998 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 12 23:33:09.998 INFO kablam! 
Oct 12 23:33:09.998 INFO kablam! warning: method is never used: `get_mut`
Oct 12 23:33:09.999 INFO kablam!   --> src/generational_arena.rs:91:5
Oct 12 23:33:09.999 INFO kablam!    |
Oct 12 23:33:09.999 INFO kablam! 91 |     pub fn get_mut(&mut self, id: &GenerationalId) -> Option<&mut T> {
Oct 12 23:33:09.999 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 12 23:33:10.000 INFO kablam! 
Oct 12 23:33:10.000 INFO kablam! warning: method is never used: `remove`
Oct 12 23:33:10.001 INFO kablam!    --> src/generational_arena.rs:103:5
Oct 12 23:33:10.001 INFO kablam!     |
Oct 12 23:33:10.001 INFO kablam! 103 |     pub fn remove(&mut self, id: &GenerationalId) -> bool {
Oct 12 23:33:10.001 INFO kablam!     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 12 23:33:10.001 INFO kablam! 
Oct 12 23:33:10.001 INFO kablam! warning: method is never used: `len`
Oct 12 23:33:10.001 INFO kablam!    --> src/generational_arena.rs:121:5
Oct 12 23:33:10.001 INFO kablam!     |
Oct 12 23:33:10.001 INFO kablam! 121 |     pub fn len(&self) -> usize { self.len }
Oct 12 23:33:10.001 INFO kablam!     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 12 23:33:10.001 INFO kablam! 
Oct 12 23:33:10.001 INFO kablam! warning: method is never used: `capacity`
Oct 12 23:33:10.001 INFO kablam!    --> src/generational_arena.rs:124:5
Oct 12 23:33:10.001 INFO kablam!     |
Oct 12 23:33:10.001 INFO kablam! 124 |     pub fn capacity(&self) -> usize { self.arena.len() }
Oct 12 23:33:10.001 INFO kablam!     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 12 23:33:10.001 INFO kablam! 
Oct 12 23:33:10.001 INFO kablam! warning: field is never used: `value`
Oct 12 23:33:10.001 INFO kablam!   --> src/skip_list.rs:30:5
Oct 12 23:33:10.001 INFO kablam!    |
Oct 12 23:33:10.001 INFO kablam! 30 |     value: V,
Oct 12 23:33:10.001 INFO kablam!    |     ^^^^^^^^
Oct 12 23:33:10.001 INFO kablam! 
Oct 12 23:33:10.001 INFO kablam! warning: struct is never constructed: `SkipListIterator`
Oct 12 23:33:10.001 INFO kablam!   --> src/skip_list.rs:34:1
Oct 12 23:33:10.001 INFO kablam!    |
Oct 12 23:33:10.001 INFO kablam! 34 | pub struct SkipListIterator<'a, K: 'a, V: 'a> where K: Key {
Oct 12 23:33:10.001 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 12 23:33:10.001 INFO kablam! 
Oct 12 23:33:10.001 INFO kablam! warning: struct is never constructed: `SkipListPrefixIterator`
Oct 12 23:33:10.001 INFO kablam!   --> src/skip_list.rs:41:1
Oct 12 23:33:10.001 INFO kablam!    |
Oct 12 23:33:10.001 INFO kablam! 41 | pub struct SkipListPrefixIterator<'a, K: 'a, V: 'a> where K: Key {
Oct 12 23:33:10.001 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 12 23:33:10.001 INFO kablam! 
Oct 12 23:33:10.001 INFO kablam! warning: struct is never constructed: `Node`
Oct 12 23:33:10.002 INFO kablam!   --> src/skip_list.rs:92:1
Oct 12 23:33:10.002 INFO kablam!    |
Oct 12 23:33:10.002 INFO kablam! 92 | struct Node<K, V> where K: Key {
Oct 12 23:33:10.002 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 12 23:33:10.002 INFO kablam! 
Oct 12 23:33:10.002 INFO kablam! warning: type alias is never used: `NodeId`
Oct 12 23:33:10.002 INFO kablam!   --> src/skip_list.rs:97:1
Oct 12 23:33:10.002 INFO kablam!    |
Oct 12 23:33:10.002 INFO kablam! 97 | type NodeId = GenerationalId;
Oct 12 23:33:10.002 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 12 23:33:10.002 INFO kablam! 
Oct 12 23:33:10.002 INFO kablam! warning: struct is never constructed: `SearchParams`
Oct 12 23:33:10.002 INFO kablam!    --> src/skip_list.rs:101:1
Oct 12 23:33:10.002 INFO kablam!     |
Oct 12 23:33:10.002 INFO kablam! 101 | struct SearchParams<'a, K: 'a> where K: Key {
Oct 12 23:33:10.002 INFO kablam!     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 12 23:33:10.002 INFO kablam! 
Oct 12 23:33:10.002 INFO kablam! warning: method is never used: `new`
Oct 12 23:33:10.002 INFO kablam!    --> src/skip_list.rs:113:5
Oct 12 23:33:10.002 INFO kablam!     |
Oct 12 23:33:10.002 INFO kablam! 113 |     pub fn new(target: &'a K) -> SearchParams<'a, K> {
Oct 12 23:33:10.002 INFO kablam!     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 12 23:33:10.002 INFO kablam! 
Oct 12 23:33:10.002 INFO kablam! warning: method is never used: `record_traversal`
Oct 12 23:33:10.002 INFO kablam!    --> src/skip_list.rs:121:5
Oct 12 23:33:10.002 INFO kablam!     |
Oct 12 23:33:10.002 INFO kablam! 121 |     pub fn record_traversal(mut self) -> SearchParams<'a, K> {
Oct 12 23:33:10.002 INFO kablam!     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 12 23:33:10.002 INFO kablam! 
Oct 12 23:33:10.002 INFO kablam! warning: method is never used: `use_prefix_match`
Oct 12 23:33:10.002 INFO kablam!    --> src/skip_list.rs:126:5
Oct 12 23:33:10.002 INFO kablam!     |
Oct 12 23:33:10.002 INFO kablam! 126 |     pub fn use_prefix_match(mut self) -> SearchParams<'a, K> {
Oct 12 23:33:10.002 INFO kablam!     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 12 23:33:10.002 INFO kablam! 
Oct 12 23:33:10.002 INFO kablam! warning: struct is never constructed: `SearchResult`
Oct 12 23:33:10.002 INFO kablam!    --> src/skip_list.rs:135:1
Oct 12 23:33:10.002 INFO kablam!     |
Oct 12 23:33:10.002 INFO kablam! 135 | struct SearchResult {
Oct 12 23:33:10.002 INFO kablam!     | ^^^^^^^^^^^^^^^^^^^
Oct 12 23:33:10.002 INFO kablam! 
Oct 12 23:33:10.002 INFO kablam! warning: method is never used: `new`
Oct 12 23:33:10.002 INFO kablam!    --> src/skip_list.rs:153:5
Oct 12 23:33:10.002 INFO kablam!     |
Oct 12 23:33:10.002 INFO kablam! 153 |     pub fn new() -> SkipList<K, V> {
Oct 12 23:33:10.002 INFO kablam!     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 12 23:33:10.002 INFO kablam! 
Oct 12 23:33:10.002 INFO kablam! warning: method is never used: `len`
Oct 12 23:33:10.002 INFO kablam!    --> src/skip_list.rs:163:5
Oct 12 23:33:10.002 INFO kablam!     |
Oct 12 23:33:10.002 INFO kablam! 163 |     pub fn len(&self) -> usize { 
Oct 12 23:33:10.002 INFO kablam!     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 12 23:33:10.002 INFO kablam! 
Oct 12 23:33:10.002 INFO kablam! warning: method is never used: `set`
Oct 12 23:33:10.002 INFO kablam!    --> src/skip_list.rs:169:5
Oct 12 23:33:10.002 INFO kablam!     |
Oct 12 23:33:10.002 INFO kablam! 169 |     pub fn set(&mut self, key: &K, value: V) {
Oct 12 23:33:10.002 INFO kablam!     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 12 23:33:10.002 INFO kablam! 
Oct 12 23:33:10.002 INFO kablam! warning: method is never used: `get`
Oct 12 23:33:10.002 INFO kablam!    --> src/skip_list.rs:224:5
Oct 12 23:33:10.002 INFO kablam!     |
Oct 12 23:33:10.002 INFO kablam! 224 |     pub fn get(&self, key: &K) -> Option<&V> {
Oct 12 23:33:10.002 INFO kablam!     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 12 23:33:10.002 INFO kablam! 
Oct 12 23:33:10.002 INFO kablam! warning: method is never used: `get_mut`
Oct 12 23:33:10.002 INFO kablam!    --> src/skip_list.rs:237:5
Oct 12 23:33:10.002 INFO kablam!     |
Oct 12 23:33:10.002 INFO kablam! 237 |     pub fn get_mut(&mut self, key: &K) -> Option<&mut V> {
Oct 12 23:33:10.002 INFO kablam!     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 12 23:33:10.002 INFO kablam! 
Oct 12 23:33:10.002 INFO kablam! warning: method is never used: `remove`
Oct 12 23:33:10.002 INFO kablam!    --> src/skip_list.rs:251:5
Oct 12 23:33:10.002 INFO kablam!     |
Oct 12 23:33:10.002 INFO kablam! 251 |     pub fn remove(&mut self, key: &K) -> bool {
Oct 12 23:33:10.002 INFO kablam!     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 12 23:33:10.002 INFO kablam! 
Oct 12 23:33:10.002 INFO kablam! warning: method is never used: `iter`
Oct 12 23:33:10.002 INFO kablam!    --> src/skip_list.rs:281:5
Oct 12 23:33:10.002 INFO kablam!     |
Oct 12 23:33:10.002 INFO kablam! 281 |     pub fn iter(&self) -> SkipListIterator<K, V> {
Oct 12 23:33:10.002 INFO kablam!     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 12 23:33:10.002 INFO kablam! 
Oct 12 23:33:10.002 INFO kablam! warning: method is never used: `iter_at`
Oct 12 23:33:10.002 INFO kablam!    --> src/skip_list.rs:287:5
Oct 12 23:33:10.002 INFO kablam!     |
Oct 12 23:33:10.002 INFO kablam! 287 |     pub fn iter_at(&self, key: &K) -> SkipListIterator<K, V> {
Oct 12 23:33:10.002 INFO kablam!     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 12 23:33:10.003 INFO kablam! 
Oct 12 23:33:10.003 INFO kablam! warning: method is never used: `prefix_iter_at`
Oct 12 23:33:10.003 INFO kablam!    --> src/skip_list.rs:297:5
Oct 12 23:33:10.003 INFO kablam!     |
Oct 12 23:33:10.003 INFO kablam! 297 |     pub fn prefix_iter_at(&self, prefix: &K) -> SkipListPrefixIterator<K, V> {
Oct 12 23:33:10.003 INFO kablam!     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 12 23:33:10.003 INFO kablam! 
Oct 12 23:33:10.003 INFO kablam! warning: method is never used: `iterator`
Oct 12 23:33:10.003 INFO kablam!    --> src/skip_list.rs:324:5
Oct 12 23:33:10.003 INFO kablam!     |
Oct 12 23:33:10.003 INFO kablam! 324 |     fn iterator(&self, cur: Option<NodeId>) -> SkipListIterator<K, V> {
Oct 12 23:33:10.003 INFO kablam!     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 12 23:33:10.003 INFO kablam! 
Oct 12 23:33:10.003 INFO kablam! warning: method is never used: `prefix_iterator`
Oct 12 23:33:10.003 INFO kablam!    --> src/skip_list.rs:331:5
Oct 12 23:33:10.003 INFO kablam!     |
Oct 12 23:33:10.003 INFO kablam! 331 |     fn prefix_iterator(&self, prefix: K, cur: Option<NodeId>) -> SkipListPrefixIterator<K, V> {
Oct 12 23:33:10.003 INFO kablam!     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 12 23:33:10.003 INFO kablam! 
Oct 12 23:33:10.003 INFO kablam! warning: method is never used: `search`
Oct 12 23:33:10.003 INFO kablam!    --> src/skip_list.rs:339:5
Oct 12 23:33:10.003 INFO kablam!     |
Oct 12 23:33:10.003 INFO kablam! 339 |     fn search(&self, params: &SearchParams<K>) -> SearchResult {
Oct 12 23:33:10.003 INFO kablam!     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 12 23:33:10.003 INFO kablam! 
Oct 12 23:33:10.279 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 1.84s
Oct 12 23:33:10.282 INFO kablam! su: No module specific data is present
Oct 12 23:33:11.340 INFO running `"docker" "rm" "-f" "e4a54b9f59d156b46b70c3321bc5609a7202b319f0a86703a73f510f0d7661a1"`
Oct 12 23:33:11.628 INFO blam! e4a54b9f59d156b46b70c3321bc5609a7202b319f0a86703a73f510f0d7661a1