[INFO] updating cached repository cliffcrosland/search_index
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/cliffcrosland/search_index
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/cliffcrosland/search_index" "work/ex/pr-58592/sources/master#f66e4697ae286985ddefc53c3a047614568458bb/gh/cliffcrosland/search_index"`
[INFO] [stderr] Cloning into 'work/ex/pr-58592/sources/master#f66e4697ae286985ddefc53c3a047614568458bb/gh/cliffcrosland/search_index'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/cliffcrosland/search_index" "work/ex/pr-58592/sources/try#c3b22200e6f5b70eb1f99ae6944d989ae17a458a/gh/cliffcrosland/search_index"`
[INFO] [stderr] Cloning into 'work/ex/pr-58592/sources/try#c3b22200e6f5b70eb1f99ae6944d989ae17a458a/gh/cliffcrosland/search_index'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 740c3967d7d7591435a35efed2b6a09bd186c182
[INFO] sha for GitHub repo cliffcrosland/search_index: 740c3967d7d7591435a35efed2b6a09bd186c182
[INFO] validating manifest of cliffcrosland/search_index on toolchain master#f66e4697ae286985ddefc53c3a047614568458bb
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+f66e4697ae286985ddefc53c3a047614568458bb-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of cliffcrosland/search_index on toolchain try#c3b22200e6f5b70eb1f99ae6944d989ae17a458a
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c3b22200e6f5b70eb1f99ae6944d989ae17a458a-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing cliffcrosland/search_index
[INFO] finished frobbing cliffcrosland/search_index
[INFO] frobbed toml for cliffcrosland/search_index written to work/ex/pr-58592/sources/master#f66e4697ae286985ddefc53c3a047614568458bb/gh/cliffcrosland/search_index/Cargo.toml
[INFO] started frobbing cliffcrosland/search_index
[INFO] finished frobbing cliffcrosland/search_index
[INFO] frobbed toml for cliffcrosland/search_index written to work/ex/pr-58592/sources/try#c3b22200e6f5b70eb1f99ae6944d989ae17a458a/gh/cliffcrosland/search_index/Cargo.toml
[INFO] crate cliffcrosland/search_index has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+f66e4697ae286985ddefc53c3a047614568458bb-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c3b22200e6f5b70eb1f99ae6944d989ae17a458a-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking cliffcrosland/search_index against try#c3b22200e6f5b70eb1f99ae6944d989ae17a458a for pr-58592
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-58592/worker-2/try#c3b22200e6f5b70eb1f99ae6944d989ae17a458a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-58592/sources/try#c3b22200e6f5b70eb1f99ae6944d989ae17a458a/gh/cliffcrosland/search_index:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+c3b22200e6f5b70eb1f99ae6944d989ae17a458a-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] d4e64b378be7a4f17449e15c03440e2d250db80032d7a7d7a2d3ef7f1d365233
[INFO] running `"docker" "start" "-a" "d4e64b378be7a4f17449e15c03440e2d250db80032d7a7d7a2d3ef7f1d365233"`
[INFO] [stderr]     Checking search_index v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: field is never used: `next_free`
[INFO] [stderr]   --> src/generational_arena.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 |     next_free: Option<usize>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `len`
[INFO] [stderr]   --> src/generational_arena.rs:19:5
[INFO] [stderr]    |
[INFO] [stderr] 19 |     len: usize,
[INFO] [stderr]    |     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Slot`
[INFO] [stderr]   --> src/generational_arena.rs:34:1
[INFO] [stderr]    |
[INFO] [stderr] 34 | struct Slot<T> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/generational_arena.rs:41:5
[INFO] [stderr]    |
[INFO] [stderr] 41 |     pub fn new() -> GenerationalArena<T> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `insert`
[INFO] [stderr]   --> src/generational_arena.rs:50:5
[INFO] [stderr]    |
[INFO] [stderr] 50 |     pub fn insert(&mut self, value: T) -> GenerationalId {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_mut`
[INFO] [stderr]   --> src/generational_arena.rs:91:5
[INFO] [stderr]    |
[INFO] [stderr] 91 |     pub fn get_mut(&mut self, id: &GenerationalId) -> Option<&mut T> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `remove`
[INFO] [stderr]    --> src/generational_arena.rs:103:5
[INFO] [stderr]     |
[INFO] [stderr] 103 |     pub fn remove(&mut self, id: &GenerationalId) -> bool {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `len`
[INFO] [stderr]    --> src/generational_arena.rs:121:5
[INFO] [stderr]     |
[INFO] [stderr] 121 |     pub fn len(&self) -> usize { self.len }
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `capacity`
[INFO] [stderr]    --> src/generational_arena.rs:124:5
[INFO] [stderr]     |
[INFO] [stderr] 124 |     pub fn capacity(&self) -> usize { self.arena.len() }
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `value`
[INFO] [stderr]   --> src/skip_list.rs:30:5
[INFO] [stderr]    |
[INFO] [stderr] 30 |     value: V,
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `SkipListIterator`
[INFO] [stderr]   --> src/skip_list.rs:34:1
[INFO] [stderr]    |
[INFO] [stderr] 34 | pub struct SkipListIterator<'a, K: 'a, V: 'a> where K: Key {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `SkipListPrefixIterator`
[INFO] [stderr]   --> src/skip_list.rs:41:1
[INFO] [stderr]    |
[INFO] [stderr] 41 | pub struct SkipListPrefixIterator<'a, K: 'a, V: 'a> where K: Key {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Node`
[INFO] [stderr]   --> src/skip_list.rs:92:1
[INFO] [stderr]    |
[INFO] [stderr] 92 | struct Node<K, V> where K: Key {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `NodeId`
[INFO] [stderr]   --> src/skip_list.rs:97:1
[INFO] [stderr]    |
[INFO] [stderr] 97 | type NodeId = GenerationalId;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `SearchParams`
[INFO] [stderr]    --> src/skip_list.rs:101:1
[INFO] [stderr]     |
[INFO] [stderr] 101 | struct SearchParams<'a, K: 'a> where K: Key {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]    --> src/skip_list.rs:113:5
[INFO] [stderr]     |
[INFO] [stderr] 113 |     pub fn new(target: &'a K) -> SearchParams<'a, K> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `record_traversal`
[INFO] [stderr]    --> src/skip_list.rs:121:5
[INFO] [stderr]     |
[INFO] [stderr] 121 |     pub fn record_traversal(mut self) -> SearchParams<'a, K> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `use_prefix_match`
[INFO] [stderr]    --> src/skip_list.rs:126:5
[INFO] [stderr]     |
[INFO] [stderr] 126 |     pub fn use_prefix_match(mut self) -> SearchParams<'a, K> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `SearchResult`
[INFO] [stderr]    --> src/skip_list.rs:135:1
[INFO] [stderr]     |
[INFO] [stderr] 135 | struct SearchResult {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]    --> src/skip_list.rs:153:5
[INFO] [stderr]     |
[INFO] [stderr] 153 |     pub fn new() -> SkipList<K, V> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `len`
[INFO] [stderr]    --> src/skip_list.rs:163:5
[INFO] [stderr]     |
[INFO] [stderr] 163 |     pub fn len(&self) -> usize { 
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `set`
[INFO] [stderr]    --> src/skip_list.rs:169:5
[INFO] [stderr]     |
[INFO] [stderr] 169 |     pub fn set(&mut self, key: &K, value: V) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get`
[INFO] [stderr]    --> src/skip_list.rs:224:5
[INFO] [stderr]     |
[INFO] [stderr] 224 |     pub fn get(&self, key: &K) -> Option<&V> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_mut`
[INFO] [stderr]    --> src/skip_list.rs:237:5
[INFO] [stderr]     |
[INFO] [stderr] 237 |     pub fn get_mut(&mut self, key: &K) -> Option<&mut V> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `remove`
[INFO] [stderr]    --> src/skip_list.rs:251:5
[INFO] [stderr]     |
[INFO] [stderr] 251 |     pub fn remove(&mut self, key: &K) -> bool {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `iter`
[INFO] [stderr]    --> src/skip_list.rs:281:5
[INFO] [stderr]     |
[INFO] [stderr] 281 |     pub fn iter(&self) -> SkipListIterator<K, V> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `iter_at`
[INFO] [stderr]    --> src/skip_list.rs:287:5
[INFO] [stderr]     |
[INFO] [stderr] 287 |     pub fn iter_at(&self, key: &K) -> SkipListIterator<K, V> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `prefix_iter_at`
[INFO] [stderr]    --> src/skip_list.rs:297:5
[INFO] [stderr]     |
[INFO] [stderr] 297 |     pub fn prefix_iter_at(&self, prefix: &K) -> SkipListPrefixIterator<K, V> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `iterator`
[INFO] [stderr]    --> src/skip_list.rs:324:5
[INFO] [stderr]     |
[INFO] [stderr] 324 |     fn iterator(&self, cur: Option<NodeId>) -> SkipListIterator<K, V> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `prefix_iterator`
[INFO] [stderr]    --> src/skip_list.rs:331:5
[INFO] [stderr]     |
[INFO] [stderr] 331 |     fn prefix_iterator(&self, prefix: K, cur: Option<NodeId>) -> SkipListPrefixIterator<K, V> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `search`
[INFO] [stderr]    --> src/skip_list.rs:339:5
[INFO] [stderr]     |
[INFO] [stderr] 339 |     fn search(&self, params: &SearchParams<K>) -> SearchResult {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.24s
[INFO] running `"docker" "inspect" "d4e64b378be7a4f17449e15c03440e2d250db80032d7a7d7a2d3ef7f1d365233"`
[INFO] running `"docker" "rm" "-f" "d4e64b378be7a4f17449e15c03440e2d250db80032d7a7d7a2d3ef7f1d365233"`
[INFO] [stdout] d4e64b378be7a4f17449e15c03440e2d250db80032d7a7d7a2d3ef7f1d365233