[INFO] cloning repository SonicFrog/furry-bassoon [INFO] running `"git" "clone" "--bare" "git://github.com/SonicFrog/furry-bassoon.git" "work/cache/sources/gh/SonicFrog/furry-bassoon"` [INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/SonicFrog/furry-bassoon'... [INFO] running `"git" "clone" "work/cache/sources/gh/SonicFrog/furry-bassoon" "work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/SonicFrog/furry-bassoon"` [INFO] [stderr] Cloning into 'work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/SonicFrog/furry-bassoon'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/SonicFrog/furry-bassoon" "work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/SonicFrog/furry-bassoon"` [INFO] [stderr] Cloning into 'work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/SonicFrog/furry-bassoon'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] 03bc7cd0bce6dd1aeb5033b42ff0bbde83d54fa5 [INFO] sha for GitHub repo SonicFrog/furry-bassoon: 03bc7cd0bce6dd1aeb5033b42ff0bbde83d54fa5 [INFO] validating manifest of SonicFrog/furry-bassoon on toolchain master#c8865d8e195813ade6b84434ac9f8850e7112d1a [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] validating manifest of SonicFrog/furry-bassoon on toolchain try#e212b7d492c96d3837691ba29d32d5f468933fb8 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started frobbing SonicFrog/furry-bassoon [INFO] finished frobbing SonicFrog/furry-bassoon [INFO] frobbed toml for SonicFrog/furry-bassoon written to work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/SonicFrog/furry-bassoon/Cargo.toml [INFO] started frobbing SonicFrog/furry-bassoon [INFO] finished frobbing SonicFrog/furry-bassoon [INFO] frobbed toml for SonicFrog/furry-bassoon written to work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/SonicFrog/furry-bassoon/Cargo.toml [INFO] crate SonicFrog/furry-bassoon already has a lockfile, it will not be regenerated [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] testing SonicFrog/furry-bassoon against master#c8865d8e195813ade6b84434ac9f8850e7112d1a for pr-61629 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-4/master#c8865d8e195813ade6b84434ac9f8850e7112d1a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/SonicFrog/furry-bassoon:/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" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "build" "--frozen"` [INFO] [stdout] 0b88dd914161c17598aabab31ab0ee8834e972b3aeaeffc7175aeb80cf4554ec [INFO] running `"docker" "start" "-a" "0b88dd914161c17598aabab31ab0ee8834e972b3aeaeffc7175aeb80cf4554ec"` [INFO] [stderr] Compiling crossbeam-utils v0.3.2 [INFO] [stderr] Compiling memcached v0.1.0 (/opt/crater/workdir) [INFO] [stderr] warning: field is never used: `hasher` [INFO] [stderr] --> src/map.rs:12:5 [INFO] [stderr] | [INFO] [stderr] 12 | hasher: DefaultHasher, [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(dead_code)] on by default [INFO] [stderr] [INFO] [stderr] warning: method is never used: `remove` [INFO] [stderr] --> src/map.rs:79:5 [INFO] [stderr] | [INFO] [stderr] 79 | pub fn remove(&self, key: &K) { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: constant item is never used: `DEFAULT_TABLE_CAPACITY` [INFO] [stderr] --> src/loan_map.rs:14:1 [INFO] [stderr] | [INFO] [stderr] 14 | const DEFAULT_TABLE_CAPACITY: usize = 128; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: constant item is never used: `DEFAULT_BUCKET_CAPACITY` [INFO] [stderr] --> src/loan_map.rs:15:1 [INFO] [stderr] | [INFO] [stderr] 15 | const DEFAULT_BUCKET_CAPACITY: usize = 128; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: struct is never constructed: `VersionTable` [INFO] [stderr] --> src/loan_map.rs:17:1 [INFO] [stderr] | [INFO] [stderr] 17 | struct VersionTable { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `with_capacity` [INFO] [stderr] --> src/loan_map.rs:26:5 [INFO] [stderr] | [INFO] [stderr] 26 | fn with_capacity(cap: usize) -> VersionTable { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `current_head` [INFO] [stderr] --> src/loan_map.rs:33:5 [INFO] [stderr] | [INFO] [stderr] 33 | fn current_head(&self) -> usize { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `next_head` [INFO] [stderr] --> src/loan_map.rs:37:5 [INFO] [stderr] | [INFO] [stderr] 37 | fn next_head(&self) -> usize { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `scan` [INFO] [stderr] --> src/loan_map.rs:41:5 [INFO] [stderr] | [INFO] [stderr] 41 | / fn scan(&self, f: F) -> RwLockReadGuard> [INFO] [stderr] 42 | | where [INFO] [stderr] 43 | | F: Fn(&Bucket) -> bool, [INFO] [stderr] 44 | | { [INFO] [stderr] ... | [INFO] [stderr] 56 | | self.bucket[start].read().unwrap() [INFO] [stderr] 57 | | } [INFO] [stderr] | |_____^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `remove` [INFO] [stderr] --> src/loan_map.rs:59:5 [INFO] [stderr] | [INFO] [stderr] 59 | fn remove(&self, key: K) -> Option { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `scan_mut` [INFO] [stderr] --> src/loan_map.rs:67:5 [INFO] [stderr] | [INFO] [stderr] 67 | / fn scan_mut(&self, f: F) -> RwLockWriteGuard> [INFO] [stderr] 68 | | where [INFO] [stderr] 69 | | F: Fn(&Bucket) -> bool, [INFO] [stderr] 70 | | { [INFO] [stderr] ... | [INFO] [stderr] 82 | | self.bucket[start].write().unwrap() [INFO] [stderr] 83 | | } [INFO] [stderr] | |_____^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `update` [INFO] [stderr] --> src/loan_map.rs:85:5 [INFO] [stderr] | [INFO] [stderr] 85 | fn update(&self, key: K, value: V) -> Option { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `newest` [INFO] [stderr] --> src/loan_map.rs:92:5 [INFO] [stderr] | [INFO] [stderr] 92 | fn newest(&self, key: &K) -> Option>> { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: enum is never used: `Bucket` [INFO] [stderr] --> src/loan_map.rs:113:1 [INFO] [stderr] | [INFO] [stderr] 113 | enum Bucket { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `is_free` [INFO] [stderr] --> src/loan_map.rs:120:5 [INFO] [stderr] | [INFO] [stderr] 120 | fn is_free(&self) -> bool { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `value` [INFO] [stderr] --> src/loan_map.rs:127:5 [INFO] [stderr] | [INFO] [stderr] 127 | fn value(self) -> Option { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `key` [INFO] [stderr] --> src/loan_map.rs:135:5 [INFO] [stderr] | [INFO] [stderr] 135 | fn key(&self) -> Option<&K> { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `value_ref` [INFO] [stderr] --> src/loan_map.rs:143:5 [INFO] [stderr] | [INFO] [stderr] 143 | fn value_ref(&self) -> Result<&V, ()> { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `key_matches` [INFO] [stderr] --> src/loan_map.rs:151:5 [INFO] [stderr] | [INFO] [stderr] 151 | / fn key_matches(&self, key: &K) -> bool [INFO] [stderr] 152 | | where [INFO] [stderr] 153 | | K: PartialEq, [INFO] [stderr] 154 | | { [INFO] [stderr] ... | [INFO] [stderr] 159 | | } [INFO] [stderr] 160 | | } [INFO] [stderr] | |_____^ [INFO] [stderr] [INFO] [stderr] warning: struct is never constructed: `Table` [INFO] [stderr] --> src/loan_map.rs:163:1 [INFO] [stderr] | [INFO] [stderr] 163 | / struct Table [INFO] [stderr] 164 | | where [INFO] [stderr] 165 | | K: PartialEq + Hash, [INFO] [stderr] 166 | | { [INFO] [stderr] 167 | | hash_builder: RandomState, [INFO] [stderr] 168 | | buckets: Vec>, [INFO] [stderr] 169 | | } [INFO] [stderr] | |_^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `with_capacity` [INFO] [stderr] --> src/loan_map.rs:175:5 [INFO] [stderr] | [INFO] [stderr] 175 | fn with_capacity(cap: usize, bucket_size: usize) -> Table { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `hash` [INFO] [stderr] --> src/loan_map.rs:185:5 [INFO] [stderr] | [INFO] [stderr] 185 | fn hash(&self, key: &K) -> usize { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `scan` [INFO] [stderr] --> src/loan_map.rs:192:5 [INFO] [stderr] | [INFO] [stderr] 192 | / fn scan(&self, key: &K, matches: F) -> RwLockReadGuard> [INFO] [stderr] 193 | | where F: Fn(&Bucket) -> bool, [INFO] [stderr] 194 | | { [INFO] [stderr] 195 | | self.buckets[self.hash(key)].scan(matches) [INFO] [stderr] 196 | | } [INFO] [stderr] | |_____^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `scan_mut` [INFO] [stderr] --> src/loan_map.rs:198:5 [INFO] [stderr] | [INFO] [stderr] 198 | / fn scan_mut(&self, key: &K, matches: F) -> RwLockWriteGuard> [INFO] [stderr] 199 | | where F: Fn(&Bucket) -> bool, [INFO] [stderr] 200 | | { [INFO] [stderr] 201 | | self.buckets[self.hash(key)].scan_mut(matches) [INFO] [stderr] 202 | | } [INFO] [stderr] | |_____^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `lookup` [INFO] [stderr] --> src/loan_map.rs:204:5 [INFO] [stderr] | [INFO] [stderr] 204 | fn lookup(&self, key: &K) -> RwLockReadGuard> { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `lookup_or_free` [INFO] [stderr] --> src/loan_map.rs:212:5 [INFO] [stderr] | [INFO] [stderr] 212 | fn lookup_or_free(&self, key: &K) -> RwLockWriteGuard> { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `remove` [INFO] [stderr] --> src/loan_map.rs:222:5 [INFO] [stderr] | [INFO] [stderr] 222 | fn remove(&self, key: K) -> Option { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `lookup_or_free_mut` [INFO] [stderr] --> src/loan_map.rs:226:5 [INFO] [stderr] | [INFO] [stderr] 226 | fn lookup_or_free_mut(&self, key: &K) -> RwLockWriteGuard> { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `lookup_mut` [INFO] [stderr] --> src/loan_map.rs:233:5 [INFO] [stderr] | [INFO] [stderr] 233 | fn lookup_mut(&self, key: &K) -> RwLockWriteGuard> { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: struct is never constructed: `ReadGuard` [INFO] [stderr] --> src/loan_map.rs:244:1 [INFO] [stderr] | [INFO] [stderr] 244 | pub struct ReadGuard<'a, K: 'a + PartialEq + Hash, V: 'a> { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: struct is never constructed: `LoanMap` [INFO] [stderr] --> src/loan_map.rs:283:1 [INFO] [stderr] | [INFO] [stderr] 283 | / pub struct LoanMap [INFO] [stderr] 284 | | where [INFO] [stderr] 285 | | K: PartialEq + Hash, [INFO] [stderr] 286 | | { [INFO] [stderr] 287 | | table: RwLock>, [INFO] [stderr] 288 | | } [INFO] [stderr] | |_^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `new` [INFO] [stderr] --> src/loan_map.rs:295:5 [INFO] [stderr] | [INFO] [stderr] 295 | pub fn new() -> LoanMap { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `with_capacity` [INFO] [stderr] --> src/loan_map.rs:301:5 [INFO] [stderr] | [INFO] [stderr] 301 | pub fn with_capacity(cap: usize, bucket_size: usize) -> LoanMap { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `get` [INFO] [stderr] --> src/loan_map.rs:307:5 [INFO] [stderr] | [INFO] [stderr] 307 | pub fn get(&self, key: &K) -> Option> { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `upsert` [INFO] [stderr] --> src/loan_map.rs:319:5 [INFO] [stderr] | [INFO] [stderr] 319 | / pub fn upsert(&self, key: K, f: F) -> Option [INFO] [stderr] 320 | | where [INFO] [stderr] 321 | | F: FnOnce(&V) -> V, [INFO] [stderr] 322 | | { [INFO] [stderr] ... | [INFO] [stderr] 330 | | mem::replace(&mut *bucket, Bucket::Contains(key, new_val)).value() [INFO] [stderr] 331 | | } [INFO] [stderr] | |_____^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `put` [INFO] [stderr] --> src/loan_map.rs:333:5 [INFO] [stderr] | [INFO] [stderr] 333 | pub fn put(&self, key: K, val: V) -> Option { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `remove` [INFO] [stderr] --> src/loan_map.rs:340:5 [INFO] [stderr] | [INFO] [stderr] 340 | pub fn remove(&self, key: K) -> Option { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 2.51s [INFO] running `"docker" "inspect" "0b88dd914161c17598aabab31ab0ee8834e972b3aeaeffc7175aeb80cf4554ec"` [INFO] running `"docker" "rm" "-f" "0b88dd914161c17598aabab31ab0ee8834e972b3aeaeffc7175aeb80cf4554ec"` [INFO] [stdout] 0b88dd914161c17598aabab31ab0ee8834e972b3aeaeffc7175aeb80cf4554ec [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-4/master#c8865d8e195813ade6b84434ac9f8850e7112d1a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/SonicFrog/furry-bassoon:/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" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "test" "--frozen" "--no-run"` [INFO] [stdout] 1010fcad514414d19c05300e97915332134a7b7c689f8db99b7b775bf07af2f3 [INFO] running `"docker" "start" "-a" "1010fcad514414d19c05300e97915332134a7b7c689f8db99b7b775bf07af2f3"` [INFO] [stderr] Compiling memcached v0.1.0 (/opt/crater/workdir) [INFO] [stderr] warning: unused imports: `AtomicI64`, `Ordering` [INFO] [stderr] --> src/loan_map.rs:358:29 [INFO] [stderr] | [INFO] [stderr] 358 | use std::sync::atomic::{AtomicI64, Ordering}; [INFO] [stderr] | ^^^^^^^^^ ^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_imports)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `keys` [INFO] [stderr] --> src/loan_map.rs:617:13 [INFO] [stderr] | [INFO] [stderr] 617 | let keys = gen_rand_strings(size * 2, size); [INFO] [stderr] | ^^^^ help: consider prefixing with an underscore: `_keys` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_variables)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `values` [INFO] [stderr] --> src/loan_map.rs:618:13 [INFO] [stderr] | [INFO] [stderr] 618 | let values = gen_rand_strings(size * 2, size); [INFO] [stderr] | ^^^^^^ help: consider prefixing with an underscore: `_values` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `value` [INFO] [stderr] --> src/loan_map.rs:641:19 [INFO] [stderr] | [INFO] [stderr] 641 | for (key, value) in kv1 { [INFO] [stderr] | ^^^^^ help: consider prefixing with an underscore: `_value` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/loan_map.rs:474:37 [INFO] [stderr] | [INFO] [stderr] 474 | let mut start; [INFO] [stderr] | ----^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_mut)] on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/loan_map.rs:492:33 [INFO] [stderr] | [INFO] [stderr] 492 | let mut elapsed; [INFO] [stderr] | ----^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: field is never used: `hasher` [INFO] [stderr] --> src/map.rs:12:5 [INFO] [stderr] | [INFO] [stderr] 12 | hasher: DefaultHasher, [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(dead_code)] on by default [INFO] [stderr] [INFO] [stderr] warning: method is never used: `remove` [INFO] [stderr] --> src/loan_map.rs:59:5 [INFO] [stderr] | [INFO] [stderr] 59 | fn remove(&self, key: K) -> Option { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `is_free` [INFO] [stderr] --> src/loan_map.rs:120:5 [INFO] [stderr] | [INFO] [stderr] 120 | fn is_free(&self) -> bool { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `key` [INFO] [stderr] --> src/loan_map.rs:135:5 [INFO] [stderr] | [INFO] [stderr] 135 | fn key(&self) -> Option<&K> { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `lookup_or_free` [INFO] [stderr] --> src/loan_map.rs:212:5 [INFO] [stderr] | [INFO] [stderr] 212 | fn lookup_or_free(&self, key: &K) -> RwLockWriteGuard> { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `remove` [INFO] [stderr] --> src/loan_map.rs:222:5 [INFO] [stderr] | [INFO] [stderr] 222 | fn remove(&self, key: K) -> Option { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `lookup_mut` [INFO] [stderr] --> src/loan_map.rs:233:5 [INFO] [stderr] | [INFO] [stderr] 233 | fn lookup_mut(&self, key: &K) -> RwLockWriteGuard> { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `upsert` [INFO] [stderr] --> src/loan_map.rs:319:5 [INFO] [stderr] | [INFO] [stderr] 319 | / pub fn upsert(&self, key: K, f: F) -> Option [INFO] [stderr] 320 | | where [INFO] [stderr] 321 | | F: FnOnce(&V) -> V, [INFO] [stderr] 322 | | { [INFO] [stderr] ... | [INFO] [stderr] 330 | | mem::replace(&mut *bucket, Bucket::Contains(key, new_val)).value() [INFO] [stderr] 331 | | } [INFO] [stderr] | |_____^ [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 3.72s [INFO] running `"docker" "inspect" "1010fcad514414d19c05300e97915332134a7b7c689f8db99b7b775bf07af2f3"` [INFO] running `"docker" "rm" "-f" "1010fcad514414d19c05300e97915332134a7b7c689f8db99b7b775bf07af2f3"` [INFO] [stdout] 1010fcad514414d19c05300e97915332134a7b7c689f8db99b7b775bf07af2f3 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-4/master#c8865d8e195813ade6b84434ac9f8850e7112d1a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/SonicFrog/furry-bassoon:/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" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "test" "--frozen"` [INFO] [stdout] b877ab257662ed8d5f35c0006b5ea24b03b606fe05050f329d18f93f4782a076 [INFO] running `"docker" "start" "-a" "b877ab257662ed8d5f35c0006b5ea24b03b606fe05050f329d18f93f4782a076"` [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.04s [INFO] [stderr] Running /opt/crater/target/debug/deps/memcached-3bff5e3aba9d700b [INFO] [stdout] [INFO] [stdout] running 17 tests [INFO] [stdout] test loan_map::tests::get_inexistent_value ... ok [INFO] [stdout] test loan_map::tests::double_insert_updates_value ... ok [INFO] [stdout] test loan_map::tests::insert_then_get ... ok [INFO] [stdout] test loan_map::tests::insert_then_remove ... ok [INFO] [stdout] test loan_map::tests::delete_value ... ok [INFO] [stdout] test loan_map::tests::version_table_values_dont_interfere ... ok [INFO] [stdout] test loan_map::tests::version_table_update_single_key ... ok [INFO] [stdout] test tests::existing_key_returns_some_value ... ok [INFO] [stdout] test tests::non_existent_key_is_none ... ok [INFO] [stdout] test tests::remove_test ... ok [INFO] [stdout] test loan_map::tests::version_table_overflow_overwrites_old_values ... ok [INFO] [stdout] test loan_map::tests::version_table_multi_version_multi_key ... ok [INFO] [stdout] test tests::bench_access_32_32 ... ok [INFO] [stdout] test loan_map::tests::bench_access_u32_key_u32_value ... ok [INFO] [stdout] test loan_map::tests::concurrent_puts ... FAILED [INFO] [stdout] test loan_map::tests::bench_huge_values ... ok [INFO] [stdout] test loan_map::tests::bench_access_string_key_string_value ... ok [INFO] [stdout] [INFO] [stdout] failures: [INFO] [stdout] [INFO] [stdout] ---- loan_map::tests::concurrent_puts stdout ---- [INFO] [stdout] thread 'loan_map::tests::concurrent_puts' panicked at 'called `Result::unwrap()` on an `Err` value: Os { code: 30, kind: Other, message: "Read-only file system" }', src/libcore/result.rs:999:5 [INFO] [stdout] stack backtrace: [INFO] [stdout] 0: 0x55c0fc53520b - backtrace::backtrace::libunwind::trace::hcbf63b8d794b15f4 [INFO] [stdout] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.29/src/backtrace/libunwind.rs:88 [INFO] [stdout] 1: 0x55c0fc53520b - backtrace::backtrace::trace_unsynchronized::h681e1cb201a9972d [INFO] [stdout] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.29/src/backtrace/mod.rs:66 [INFO] [stdout] 2: 0x55c0fc53520b - std::sys_common::backtrace::_print::hd27175ce39811176 [INFO] [stdout] at src/libstd/sys_common/backtrace.rs:47 [INFO] [stdout] 3: 0x55c0fc53520b - std::sys_common::backtrace::print::h117e2eebf9a1e122 [INFO] [stdout] at src/libstd/sys_common/backtrace.rs:36 [INFO] [stdout] 4: 0x55c0fc53520b - std::panicking::default_hook::{{closure}}::h6369b988ee675335 [INFO] [stdout] at src/libstd/panicking.rs:198 [INFO] [stdout] 5: 0x55c0fc534e9f - std::panicking::default_hook::hfaefd2bea4c25f9e [INFO] [stdout] at src/libstd/panicking.rs:209 [INFO] [stdout] 6: 0x55c0fc535980 - std::panicking::rust_panic_with_hook::h02c52718165ccced [INFO] [stdout] at src/libstd/panicking.rs:475 [INFO] [stdout] 7: 0x55c0fc535502 - std::panicking::continue_panic_fmt::h9e135674c1df51b4 [INFO] [stdout] at src/libstd/panicking.rs:382 [INFO] [stdout] 8: 0x55c0fc5353e6 - rust_begin_unwind [INFO] [stdout] at src/libstd/panicking.rs:309 [INFO] [stdout] 9: 0x55c0fc54bacd - core::panicking::panic_fmt::h58c956553ac8538f [INFO] [stdout] at src/libcore/panicking.rs:85 [INFO] [stdout] 10: 0x55c0fc4ab7e3 - core::result::unwrap_failed::h15f8de81bdb08bb5 [INFO] [stdout] at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/libcore/macros.rs:18 [INFO] [stdout] 11: 0x55c0fc4af618 - core::result::Result::unwrap::ha378f5a8a3731a60 [INFO] [stdout] at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/libcore/result.rs:800 [INFO] [stdout] 12: 0x55c0fc498df4 - memcached::loan_map::tests::concurrent_puts::h1dd5b930c101d110 [INFO] [stdout] at src/loan_map.rs:455 [INFO] [stdout] 13: 0x55c0fc498cca - memcached::loan_map::tests::concurrent_puts::{{closure}}::h108dd680d81e1e08 [INFO] [stdout] at src/loan_map.rs:441 [INFO] [stdout] 14: 0x55c0fc4b3e9e - core::ops::function::FnOnce::call_once::h02c772387caef81d [INFO] [stdout] at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/libcore/ops/function.rs:231 [INFO] [stdout] 15: 0x55c0fc4cdc0f - as core::ops::function::FnOnce>::call_once::h051e7835d417eabd [INFO] [stdout] at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/liballoc/boxed.rs:746 [INFO] [stdout] 16: 0x55c0fc53863a - __rust_maybe_catch_panic [INFO] [stdout] at src/libpanic_unwind/lib.rs:85 [INFO] [stdout] 17: 0x55c0fc4e8788 - std::panicking::try::h2a4c737ee7913c25 [INFO] [stdout] at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/libstd/panicking.rs:273 [INFO] [stdout] 18: 0x55c0fc4e8788 - std::panic::catch_unwind::hb4a850da3c0f461d [INFO] [stdout] at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/libstd/panic.rs:388 [INFO] [stdout] 19: 0x55c0fc4e8788 - test::run_test::run_test_inner::{{closure}}::hf1081f8a70de250d [INFO] [stdout] at src/libtest/lib.rs:1466 [INFO] [stdout] 20: 0x55c0fc4c3185 - std::sys_common::backtrace::__rust_begin_short_backtrace::h342b596609fb99e3 [INFO] [stdout] at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/libstd/sys_common/backtrace.rs:77 [INFO] [stdout] 21: 0x55c0fc4c7115 - std::thread::Builder::spawn_unchecked::{{closure}}::{{closure}}::h513520560543c60c [INFO] [stdout] at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/libstd/thread/mod.rs:470 [INFO] [stdout] 22: 0x55c0fc4c7115 - as core::ops::function::FnOnce<()>>::call_once::ha4e1c61c6177bb54 [INFO] [stdout] at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/libstd/panic.rs:309 [INFO] [stdout] 23: 0x55c0fc4c7115 - std::panicking::try::do_call::h0eb4a0e045c14646 [INFO] [stdout] at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/libstd/panicking.rs:294 [INFO] [stdout] 24: 0x55c0fc53863a - __rust_maybe_catch_panic [INFO] [stdout] at src/libpanic_unwind/lib.rs:85 [INFO] [stdout] 25: 0x55c0fc4c7732 - std::panicking::try::h20774757cea1a66c [INFO] [stdout] at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/libstd/panicking.rs:273 [INFO] [stdout] 26: 0x55c0fc4c7732 - std::panic::catch_unwind::h38e40a373c8b5452 [INFO] [stdout] at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/libstd/panic.rs:388 [INFO] [stdout] 27: 0x55c0fc4c7732 - std::thread::Builder::spawn_unchecked::{{closure}}::h9bfd91224a2fd035 [INFO] [stdout] at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/libstd/thread/mod.rs:469 [INFO] [stdout] 28: 0x55c0fc4c7732 - core::ops::function::FnOnce::call_once{{vtable.shim}}::ha2d3b3105bb1d7d1 [INFO] [stdout] at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/libcore/ops/function.rs:231 [INFO] [stdout] 29: 0x55c0fc52acaf - as core::ops::function::FnOnce>::call_once::hc6099fbe1f2e9038 [INFO] [stdout] at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/liballoc/boxed.rs:746 [INFO] [stdout] 30: 0x55c0fc537cf0 - as core::ops::function::FnOnce>::call_once::h1b61db05dcd8ce54 [INFO] [stdout] at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/liballoc/boxed.rs:746 [INFO] [stdout] 31: 0x55c0fc537cf0 - std::sys_common::thread::start_thread::hd3ed9053e9fea488 [INFO] [stdout] at src/libstd/sys_common/thread.rs:13 [INFO] [stdout] 32: 0x55c0fc537cf0 - std::sys::unix::thread::Thread::new::thread_start::hc17e4e4c7ed2fc8f [INFO] [stdout] at src/libstd/sys/unix/thread.rs:79 [INFO] [stdout] 33: 0x7f8a56cfc4a4 - start_thread [INFO] [stdout] 34: 0x7f8a56827d0f - __clone [INFO] [stdout] 35: 0x0 - [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] failures: [INFO] [stdout] loan_map::tests::concurrent_puts [INFO] [stdout] [INFO] [stdout] test result: FAILED. 16 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stdout] [INFO] [stderr] error: test failed, to rerun pass '--bin memcached' [INFO] running `"docker" "inspect" "b877ab257662ed8d5f35c0006b5ea24b03b606fe05050f329d18f93f4782a076"` [INFO] running `"docker" "rm" "-f" "b877ab257662ed8d5f35c0006b5ea24b03b606fe05050f329d18f93f4782a076"` [INFO] [stdout] b877ab257662ed8d5f35c0006b5ea24b03b606fe05050f329d18f93f4782a076