Dec 11 20:45:20.506 INFO checking cliffcrosland/search_index against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 11 20:45:20.506 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-0/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/pr-56677/master#3a75e80557a103497cffbcab395a2f37061a77ea:/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 +3a75e80557a103497cffbcab395a2f37061a77ea-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"`
Dec 11 20:45:20.966 INFO [stdout] c1a7126c02bb18f23be544ba06ee14fd321abbb9fa13e480687bd7075ad390ad
Dec 11 20:45:20.970 INFO running `"docker" "start" "-a" "c1a7126c02bb18f23be544ba06ee14fd321abbb9fa13e480687bd7075ad390ad"`
Dec 11 20:45:22.600 INFO [stderr] usermod: no changes
Dec 11 20:45:22.748 INFO [stderr]     Checking search_index v0.1.0 (/source)
Dec 11 20:45:23.812 INFO [stderr] warning: field is never used: `next_free`
Dec 11 20:45:23.812 INFO [stderr]   --> src/generational_arena.rs:16:5
Dec 11 20:45:23.812 INFO [stderr]    |
Dec 11 20:45:23.812 INFO [stderr] 16 |     next_free: Option<usize>,
Dec 11 20:45:23.813 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 20:45:23.813 INFO [stderr]    |
Dec 11 20:45:23.813 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 11 20:45:23.815 INFO [stderr] 
Dec 11 20:45:23.815 INFO [stderr] warning: field is never used: `len`
Dec 11 20:45:23.815 INFO [stderr]   --> src/generational_arena.rs:19:5
Dec 11 20:45:23.815 INFO [stderr]    |
Dec 11 20:45:23.815 INFO [stderr] 19 |     len: usize,
Dec 11 20:45:23.815 INFO [stderr]    |     ^^^^^^^^^^
Dec 11 20:45:23.816 INFO [stderr] 
Dec 11 20:45:23.816 INFO [stderr] warning: struct is never constructed: `Slot`
Dec 11 20:45:23.816 INFO [stderr]   --> src/generational_arena.rs:34:1
Dec 11 20:45:23.816 INFO [stderr]    |
Dec 11 20:45:23.816 INFO [stderr] 34 | struct Slot<T> {
Dec 11 20:45:23.816 INFO [stderr]    | ^^^^^^^^^^^^^^
Dec 11 20:45:23.816 INFO [stderr] 
Dec 11 20:45:23.816 INFO [stderr] warning: method is never used: `new`
Dec 11 20:45:23.816 INFO [stderr]   --> src/generational_arena.rs:41:5
Dec 11 20:45:23.816 INFO [stderr]    |
Dec 11 20:45:23.816 INFO [stderr] 41 |     pub fn new() -> GenerationalArena<T> {
Dec 11 20:45:23.816 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 20:45:23.816 INFO [stderr] 
Dec 11 20:45:23.816 INFO [stderr] warning: method is never used: `insert`
Dec 11 20:45:23.816 INFO [stderr]   --> src/generational_arena.rs:50:5
Dec 11 20:45:23.816 INFO [stderr]    |
Dec 11 20:45:23.816 INFO [stderr] 50 |     pub fn insert(&mut self, value: T) -> GenerationalId {
Dec 11 20:45:23.816 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 20:45:23.816 INFO [stderr] 
Dec 11 20:45:23.816 INFO [stderr] warning: method is never used: `get_mut`
Dec 11 20:45:23.816 INFO [stderr]   --> src/generational_arena.rs:91:5
Dec 11 20:45:23.816 INFO [stderr]    |
Dec 11 20:45:23.816 INFO [stderr] 91 |     pub fn get_mut(&mut self, id: &GenerationalId) -> Option<&mut T> {
Dec 11 20:45:23.816 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 20:45:23.816 INFO [stderr] 
Dec 11 20:45:23.816 INFO [stderr] warning: method is never used: `remove`
Dec 11 20:45:23.816 INFO [stderr]    --> src/generational_arena.rs:103:5
Dec 11 20:45:23.816 INFO [stderr]     |
Dec 11 20:45:23.816 INFO [stderr] 103 |     pub fn remove(&mut self, id: &GenerationalId) -> bool {
Dec 11 20:45:23.816 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 20:45:23.816 INFO [stderr] 
Dec 11 20:45:23.816 INFO [stderr] warning: method is never used: `len`
Dec 11 20:45:23.816 INFO [stderr]    --> src/generational_arena.rs:121:5
Dec 11 20:45:23.816 INFO [stderr]     |
Dec 11 20:45:23.816 INFO [stderr] 121 |     pub fn len(&self) -> usize { self.len }
Dec 11 20:45:23.816 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 20:45:23.816 INFO [stderr] 
Dec 11 20:45:23.816 INFO [stderr] warning: method is never used: `capacity`
Dec 11 20:45:23.816 INFO [stderr]    --> src/generational_arena.rs:124:5
Dec 11 20:45:23.816 INFO [stderr]     |
Dec 11 20:45:23.816 INFO [stderr] 124 |     pub fn capacity(&self) -> usize { self.arena.len() }
Dec 11 20:45:23.816 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 20:45:23.816 INFO [stderr] 
Dec 11 20:45:23.816 INFO [stderr] warning: field is never used: `value`
Dec 11 20:45:23.816 INFO [stderr]   --> src/skip_list.rs:30:5
Dec 11 20:45:23.816 INFO [stderr]    |
Dec 11 20:45:23.816 INFO [stderr] 30 |     value: V,
Dec 11 20:45:23.816 INFO [stderr]    |     ^^^^^^^^
Dec 11 20:45:23.816 INFO [stderr] 
Dec 11 20:45:23.816 INFO [stderr] warning: struct is never constructed: `SkipListIterator`
Dec 11 20:45:23.816 INFO [stderr]   --> src/skip_list.rs:34:1
Dec 11 20:45:23.816 INFO [stderr]    |
Dec 11 20:45:23.816 INFO [stderr] 34 | pub struct SkipListIterator<'a, K: 'a, V: 'a> where K: Key {
Dec 11 20:45:23.816 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 20:45:23.816 INFO [stderr] 
Dec 11 20:45:23.816 INFO [stderr] warning: struct is never constructed: `SkipListPrefixIterator`
Dec 11 20:45:23.816 INFO [stderr]   --> src/skip_list.rs:41:1
Dec 11 20:45:23.816 INFO [stderr]    |
Dec 11 20:45:23.816 INFO [stderr] 41 | pub struct SkipListPrefixIterator<'a, K: 'a, V: 'a> where K: Key {
Dec 11 20:45:23.816 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 20:45:23.816 INFO [stderr] 
Dec 11 20:45:23.816 INFO [stderr] warning: struct is never constructed: `Node`
Dec 11 20:45:23.816 INFO [stderr]   --> src/skip_list.rs:92:1
Dec 11 20:45:23.816 INFO [stderr]    |
Dec 11 20:45:23.816 INFO [stderr] 92 | struct Node<K, V> where K: Key {
Dec 11 20:45:23.816 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 20:45:23.816 INFO [stderr] 
Dec 11 20:45:23.816 INFO [stderr] warning: type alias is never used: `NodeId`
Dec 11 20:45:23.816 INFO [stderr]   --> src/skip_list.rs:97:1
Dec 11 20:45:23.816 INFO [stderr]    |
Dec 11 20:45:23.816 INFO [stderr] 97 | type NodeId = GenerationalId;
Dec 11 20:45:23.816 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 20:45:23.816 INFO [stderr] 
Dec 11 20:45:23.816 INFO [stderr] warning: struct is never constructed: `SearchParams`
Dec 11 20:45:23.816 INFO [stderr]    --> src/skip_list.rs:101:1
Dec 11 20:45:23.816 INFO [stderr]     |
Dec 11 20:45:23.816 INFO [stderr] 101 | struct SearchParams<'a, K: 'a> where K: Key {
Dec 11 20:45:23.816 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 20:45:23.816 INFO [stderr] 
Dec 11 20:45:23.816 INFO [stderr] warning: method is never used: `new`
Dec 11 20:45:23.816 INFO [stderr]    --> src/skip_list.rs:113:5
Dec 11 20:45:23.816 INFO [stderr]     |
Dec 11 20:45:23.816 INFO [stderr] 113 |     pub fn new(target: &'a K) -> SearchParams<'a, K> {
Dec 11 20:45:23.816 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 20:45:23.816 INFO [stderr] 
Dec 11 20:45:23.816 INFO [stderr] warning: method is never used: `record_traversal`
Dec 11 20:45:23.816 INFO [stderr]    --> src/skip_list.rs:121:5
Dec 11 20:45:23.816 INFO [stderr]     |
Dec 11 20:45:23.816 INFO [stderr] 121 |     pub fn record_traversal(mut self) -> SearchParams<'a, K> {
Dec 11 20:45:23.816 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 20:45:23.816 INFO [stderr] 
Dec 11 20:45:23.816 INFO [stderr] warning: method is never used: `use_prefix_match`
Dec 11 20:45:23.817 INFO [stderr]    --> src/skip_list.rs:126:5
Dec 11 20:45:23.817 INFO [stderr]     |
Dec 11 20:45:23.817 INFO [stderr] 126 |     pub fn use_prefix_match(mut self) -> SearchParams<'a, K> {
Dec 11 20:45:23.817 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 20:45:23.817 INFO [stderr] 
Dec 11 20:45:23.817 INFO [stderr] warning: struct is never constructed: `SearchResult`
Dec 11 20:45:23.817 INFO [stderr]    --> src/skip_list.rs:135:1
Dec 11 20:45:23.817 INFO [stderr]     |
Dec 11 20:45:23.817 INFO [stderr] 135 | struct SearchResult {
Dec 11 20:45:23.817 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^
Dec 11 20:45:23.817 INFO [stderr] 
Dec 11 20:45:23.817 INFO [stderr] warning: method is never used: `new`
Dec 11 20:45:23.817 INFO [stderr]    --> src/skip_list.rs:153:5
Dec 11 20:45:23.817 INFO [stderr]     |
Dec 11 20:45:23.817 INFO [stderr] 153 |     pub fn new() -> SkipList<K, V> {
Dec 11 20:45:23.817 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 20:45:23.817 INFO [stderr] 
Dec 11 20:45:23.817 INFO [stderr] warning: method is never used: `len`
Dec 11 20:45:23.817 INFO [stderr]    --> src/skip_list.rs:163:5
Dec 11 20:45:23.817 INFO [stderr]     |
Dec 11 20:45:23.817 INFO [stderr] 163 |     pub fn len(&self) -> usize { 
Dec 11 20:45:23.817 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 20:45:23.817 INFO [stderr] 
Dec 11 20:45:23.817 INFO [stderr] warning: method is never used: `set`
Dec 11 20:45:23.817 INFO [stderr]    --> src/skip_list.rs:169:5
Dec 11 20:45:23.817 INFO [stderr]     |
Dec 11 20:45:23.817 INFO [stderr] 169 |     pub fn set(&mut self, key: &K, value: V) {
Dec 11 20:45:23.817 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 20:45:23.817 INFO [stderr] 
Dec 11 20:45:23.817 INFO [stderr] warning: method is never used: `get`
Dec 11 20:45:23.817 INFO [stderr]    --> src/skip_list.rs:224:5
Dec 11 20:45:23.817 INFO [stderr]     |
Dec 11 20:45:23.817 INFO [stderr] 224 |     pub fn get(&self, key: &K) -> Option<&V> {
Dec 11 20:45:23.817 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 20:45:23.817 INFO [stderr] 
Dec 11 20:45:23.817 INFO [stderr] warning: method is never used: `get_mut`
Dec 11 20:45:23.817 INFO [stderr]    --> src/skip_list.rs:237:5
Dec 11 20:45:23.817 INFO [stderr]     |
Dec 11 20:45:23.817 INFO [stderr] 237 |     pub fn get_mut(&mut self, key: &K) -> Option<&mut V> {
Dec 11 20:45:23.817 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 20:45:23.817 INFO [stderr] 
Dec 11 20:45:23.817 INFO [stderr] warning: method is never used: `remove`
Dec 11 20:45:23.817 INFO [stderr]    --> src/skip_list.rs:251:5
Dec 11 20:45:23.817 INFO [stderr]     |
Dec 11 20:45:23.817 INFO [stderr] 251 |     pub fn remove(&mut self, key: &K) -> bool {
Dec 11 20:45:23.817 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 20:45:23.817 INFO [stderr] 
Dec 11 20:45:23.817 INFO [stderr] warning: method is never used: `iter`
Dec 11 20:45:23.817 INFO [stderr]    --> src/skip_list.rs:281:5
Dec 11 20:45:23.817 INFO [stderr]     |
Dec 11 20:45:23.817 INFO [stderr] 281 |     pub fn iter(&self) -> SkipListIterator<K, V> {
Dec 11 20:45:23.817 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 20:45:23.817 INFO [stderr] 
Dec 11 20:45:23.817 INFO [stderr] warning: method is never used: `iter_at`
Dec 11 20:45:23.817 INFO [stderr]    --> src/skip_list.rs:287:5
Dec 11 20:45:23.817 INFO [stderr]     |
Dec 11 20:45:23.817 INFO [stderr] 287 |     pub fn iter_at(&self, key: &K) -> SkipListIterator<K, V> {
Dec 11 20:45:23.817 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 20:45:23.817 INFO [stderr] 
Dec 11 20:45:23.817 INFO [stderr] warning: method is never used: `prefix_iter_at`
Dec 11 20:45:23.817 INFO [stderr]    --> src/skip_list.rs:297:5
Dec 11 20:45:23.817 INFO [stderr]     |
Dec 11 20:45:23.817 INFO [stderr] 297 |     pub fn prefix_iter_at(&self, prefix: &K) -> SkipListPrefixIterator<K, V> {
Dec 11 20:45:23.817 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 20:45:23.817 INFO [stderr] 
Dec 11 20:45:23.817 INFO [stderr] warning: method is never used: `iterator`
Dec 11 20:45:23.817 INFO [stderr]    --> src/skip_list.rs:324:5
Dec 11 20:45:23.817 INFO [stderr]     |
Dec 11 20:45:23.817 INFO [stderr] 324 |     fn iterator(&self, cur: Option<NodeId>) -> SkipListIterator<K, V> {
Dec 11 20:45:23.817 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 20:45:23.817 INFO [stderr] 
Dec 11 20:45:23.817 INFO [stderr] warning: method is never used: `prefix_iterator`
Dec 11 20:45:23.817 INFO [stderr]    --> src/skip_list.rs:331:5
Dec 11 20:45:23.817 INFO [stderr]     |
Dec 11 20:45:23.817 INFO [stderr] 331 |     fn prefix_iterator(&self, prefix: K, cur: Option<NodeId>) -> SkipListPrefixIterator<K, V> {
Dec 11 20:45:23.817 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 20:45:23.817 INFO [stderr] 
Dec 11 20:45:23.817 INFO [stderr] warning: method is never used: `search`
Dec 11 20:45:23.817 INFO [stderr]    --> src/skip_list.rs:339:5
Dec 11 20:45:23.817 INFO [stderr]     |
Dec 11 20:45:23.817 INFO [stderr] 339 |     fn search(&self, params: &SearchParams<K>) -> SearchResult {
Dec 11 20:45:23.817 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 20:45:23.817 INFO [stderr] 
Dec 11 20:45:24.180 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.54s
Dec 11 20:45:24.192 INFO [stderr] su: No module specific data is present
Dec 11 20:45:24.976 INFO running `"docker" "inspect" "c1a7126c02bb18f23be544ba06ee14fd321abbb9fa13e480687bd7075ad390ad"`
Dec 11 20:45:25.392 INFO running `"docker" "rm" "-f" "c1a7126c02bb18f23be544ba06ee14fd321abbb9fa13e480687bd7075ad390ad"`
Dec 11 20:45:25.724 INFO [stdout] c1a7126c02bb18f23be544ba06ee14fd321abbb9fa13e480687bd7075ad390ad