[INFO] cloning repository https://github.com/SilvioPilato/Hash-Index-KV-Store
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/SilvioPilato/Hash-Index-KV-Store" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSilvioPilato%2FHash-Index-KV-Store", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSilvioPilato%2FHash-Index-KV-Store'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 694bd329569bd22f6c4546b4e4f9dd8d0083ff7e
[INFO] testing SilvioPilato/Hash-Index-KV-Store against 1.95.0 for beta-1.96-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSilvioPilato%2FHash-Index-KV-Store" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/SilvioPilato/Hash-Index-KV-Store
[INFO] finished tweaking git repo https://github.com/SilvioPilato/Hash-Index-KV-Store
[INFO] tweaked toml for git repo https://github.com/SilvioPilato/Hash-Index-KV-Store written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/SilvioPilato/Hash-Index-KV-Store on toolchain 1.95.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/SilvioPilato/Hash-Index-KV-Store already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded sha1_smol v1.0.1
[INFO] [stderr]   Downloaded redis v0.27.6
[INFO] [stderr]   Downloaded arc-swap v1.9.1
[INFO] [stderr]   Downloaded sled v0.34.7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+1.95.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e2de4824b1e9a70adea09ac57f1bff07621843b0871de275e12e2f4022ff423d
[INFO] running `Command { std: "docker" "start" "-a" "e2de4824b1e9a70adea09ac57f1bff07621843b0871de275e12e2f4022ff423d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e2de4824b1e9a70adea09ac57f1bff07621843b0871de275e12e2f4022ff423d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e2de4824b1e9a70adea09ac57f1bff07621843b0871de275e12e2f4022ff423d", kill_on_drop: false }`
[INFO] [stdout] e2de4824b1e9a70adea09ac57f1bff07621843b0871de275e12e2f4022ff423d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "+1.95.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e3845365ddec9b6ffa6d8f3224e672983b6404852de41fc7f7153f58551a30ce
[INFO] running `Command { std: "docker" "start" "-a" "e3845365ddec9b6ffa6d8f3224e672983b6404852de41fc7f7153f58551a30ce", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v2.0.117
[INFO] [stderr]    Compiling libc v0.2.186
[INFO] [stderr]    Compiling litemap v0.8.2
[INFO] [stderr]    Compiling smallvec v1.15.1
[INFO] [stderr]    Compiling writeable v0.6.3
[INFO] [stderr]    Compiling icu_properties_data v2.2.0
[INFO] [stderr]    Compiling icu_normalizer_data v2.2.0
[INFO] [stderr]    Compiling parking_lot_core v0.8.6
[INFO] [stderr]    Compiling crc32fast v1.5.0
[INFO] [stderr]    Compiling instant v0.1.13
[INFO] [stderr]    Compiling form_urlencoded v1.2.2
[INFO] [stderr]    Compiling either v1.15.0
[INFO] [stderr]    Compiling byteorder v1.5.0
[INFO] [stderr]    Compiling memchr v2.8.0
[INFO] [stderr]    Compiling num-integer v0.1.46
[INFO] [stderr]    Compiling arc-swap v1.9.1
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.18
[INFO] [stderr]    Compiling fxhash v0.2.1
[INFO] [stderr]    Compiling itertools v0.13.0
[INFO] [stderr]    Compiling itoa v1.0.18
[INFO] [stderr]    Compiling sha1_smol v1.0.1
[INFO] [stderr]    Compiling num-bigint v0.4.6
[INFO] [stderr]    Compiling combine v4.6.7
[INFO] [stderr]    Compiling socket2 v0.5.10
[INFO] [stderr]    Compiling fs2 v0.4.3
[INFO] [stderr]    Compiling parking_lot v0.11.2
[INFO] [stderr]    Compiling sled v0.34.7
[INFO] [stderr]    Compiling synstructure v0.13.2
[INFO] [stderr]    Compiling zerovec-derive v0.11.3
[INFO] [stderr]    Compiling displaydoc v0.2.5
[INFO] [stderr]    Compiling zerofrom-derive v0.1.7
[INFO] [stderr]    Compiling yoke-derive v0.8.2
[INFO] [stderr]    Compiling zerofrom v0.1.7
[INFO] [stderr]    Compiling yoke v0.8.2
[INFO] [stderr]    Compiling zerovec v0.11.6
[INFO] [stderr]    Compiling zerotrie v0.2.4
[INFO] [stderr]    Compiling tinystr v0.8.3
[INFO] [stderr]    Compiling potential_utf v0.1.5
[INFO] [stderr]    Compiling icu_collections v2.2.0
[INFO] [stderr]    Compiling icu_locale_core v2.2.0
[INFO] [stderr]    Compiling icu_provider v2.2.0
[INFO] [stderr]    Compiling icu_properties v2.2.0
[INFO] [stderr]    Compiling icu_normalizer v2.2.0
[INFO] [stderr]    Compiling idna_adapter v1.2.1
[INFO] [stderr]    Compiling idna v1.1.0
[INFO] [stderr]    Compiling url v2.5.8
[INFO] [stderr]    Compiling redis v0.27.6
[INFO] [stderr]    Compiling rustikv v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated method `redis::Cmd::execute`: Use Cmd::exec + unwrap, instead
[INFO] [stdout]    --> src/bin/redis-compare.rs:134:10
[INFO] [stdout]     |
[INFO] [stdout] 134 |         .execute(con);
[INFO] [stdout]     |          ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/bin/redis-compare.rs:295:9
[INFO] [stdout]     |
[INFO] [stdout] 295 |     let mut results: Vec<(&str, f64, f64)> = Vec::new();
[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: unused variable: `results`
[INFO] [stdout]    --> src/bin/redis-compare.rs:295:9
[INFO] [stdout]     |
[INFO] [stdout] 295 |     let mut results: Vec<(&str, f64, f64)> = Vec::new();
[INFO] [stdout]     |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_results`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 25.25s
[INFO] running `Command { std: "docker" "inspect" "e3845365ddec9b6ffa6d8f3224e672983b6404852de41fc7f7153f58551a30ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e3845365ddec9b6ffa6d8f3224e672983b6404852de41fc7f7153f58551a30ce", kill_on_drop: false }`
[INFO] [stdout] e3845365ddec9b6ffa6d8f3224e672983b6404852de41fc7f7153f58551a30ce
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "+1.95.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cf883ecec3567558c68d78a697fe7b6e8b9f2c3f843c64d43894ce181a41dc38
[INFO] running `Command { std: "docker" "start" "-a" "cf883ecec3567558c68d78a697fe7b6e8b9f2c3f843c64d43894ce181a41dc38", kill_on_drop: false }`
[INFO] [stderr]    Compiling rustikv v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated method `redis::Cmd::execute`: Use Cmd::exec + unwrap, instead
[INFO] [stdout]    --> src/bin/redis-compare.rs:134:10
[INFO] [stdout]     |
[INFO] [stdout] 134 |         .execute(con);
[INFO] [stdout]     |          ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/bin/redis-compare.rs:295:9
[INFO] [stdout]     |
[INFO] [stdout] 295 |     let mut results: Vec<(&str, f64, f64)> = Vec::new();
[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: unused variable: `results`
[INFO] [stdout]    --> src/bin/redis-compare.rs:295:9
[INFO] [stdout]     |
[INFO] [stdout] 295 |     let mut results: Vec<(&str, f64, f64)> = Vec::new();
[INFO] [stdout]     |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_results`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> tests/worker.rs:75:9
[INFO] [stdout]    |
[INFO] [stdout] 75 |     let mut db = KVEngine::new(
[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: variable does not need to be mutable
[INFO] [stdout]   --> tests/worker.rs:93:9
[INFO] [stdout]    |
[INFO] [stdout] 93 |     let mut db = KVEngine::new(
[INFO] [stdout]    |         ----^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> tests/lsmengine.rs:38:9
[INFO] [stdout]    |
[INFO] [stdout] 38 |     let mut engine = new_engine(&dir, "test", BIG_MEMTABLE).unwrap();
[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: variable does not need to be mutable
[INFO] [stdout]   --> tests/lsmengine.rs:54:9
[INFO] [stdout]    |
[INFO] [stdout] 54 |     let mut engine = new_engine(&dir, "test", BIG_MEMTABLE).unwrap();
[INFO] [stdout]    |         ----^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> tests/lsmengine.rs:64:9
[INFO] [stdout]    |
[INFO] [stdout] 64 |     let mut engine = new_engine(&dir, "test", BIG_MEMTABLE).unwrap();
[INFO] [stdout]    |         ----^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> tests/lsmengine.rs:73:9
[INFO] [stdout]    |
[INFO] [stdout] 73 |     let mut engine = new_engine(&dir, "test", BIG_MEMTABLE).unwrap();
[INFO] [stdout]    |         ----^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> tests/lsmengine.rs:111:9
[INFO] [stdout]     |
[INFO] [stdout] 111 |     let mut engine = new_engine(&dir, "test", 1).unwrap();
[INFO] [stdout]     |         ----^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> tests/lsmengine.rs:130:9
[INFO] [stdout]     |
[INFO] [stdout] 130 |     let mut engine = new_engine(&dir, "test", 1).unwrap();
[INFO] [stdout]     |         ----^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> tests/lsmengine.rs:141:9
[INFO] [stdout]     |
[INFO] [stdout] 141 |     let mut engine = new_engine(&dir, "test", 1).unwrap();
[INFO] [stdout]     |         ----^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> tests/lsmengine.rs:156:9
[INFO] [stdout]     |
[INFO] [stdout] 156 |     let mut engine = new_engine(&dir, "test", 1).unwrap();
[INFO] [stdout]     |         ----^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> tests/lsmengine.rs:169:9
[INFO] [stdout]     |
[INFO] [stdout] 169 |     let mut engine = new_engine(&dir, "test", 1).unwrap();
[INFO] [stdout]     |         ----^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> tests/lsmengine.rs:181:9
[INFO] [stdout]     |
[INFO] [stdout] 181 |     let mut engine = new_engine(&dir, "test", 1).unwrap();
[INFO] [stdout]     |         ----^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> tests/lsmengine.rs:198:13
[INFO] [stdout]     |
[INFO] [stdout] 198 |         let mut engine = new_engine(&dir, "test", 1).unwrap();
[INFO] [stdout]     |             ----^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> tests/lsmengine.rs:213:9
[INFO] [stdout]     |
[INFO] [stdout] 213 |     let mut engine = new_engine(&dir, "test", 1).unwrap();
[INFO] [stdout]     |         ----^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> tests/lsmengine.rs:257:13
[INFO] [stdout]     |
[INFO] [stdout] 257 |         let mut engine = new_engine(&dir, "test", BIG_MEMTABLE).unwrap();
[INFO] [stdout]     |             ----^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> tests/lsmengine.rs:285:13
[INFO] [stdout]     |
[INFO] [stdout] 285 |         let mut engine = new_engine(&dir, "test", 1).unwrap(); // threshold=1 flushes immediately
[INFO] [stdout]     |             ----^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> tests/lsmengine.rs:289:13
[INFO] [stdout]     |
[INFO] [stdout] 289 |         let mut engine = engine_from_dir(&dir, "test", BIG_MEMTABLE).unwrap();
[INFO] [stdout]     |             ----^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> tests/lsmengine.rs:304:13
[INFO] [stdout]     |
[INFO] [stdout] 304 |         let mut engine = new_engine(&dir, "test", BIG_MEMTABLE).unwrap();
[INFO] [stdout]     |             ----^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> tests/lsmengine.rs:331:9
[INFO] [stdout]     |
[INFO] [stdout] 331 |     let mut engine = new_engine(&dir, "test", 1).unwrap(); // threshold=1, every write flushes
[INFO] [stdout]     |         ----^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> tests/lsmengine.rs:345:9
[INFO] [stdout]     |
[INFO] [stdout] 345 |     let mut engine = new_engine(&dir, "test", BIG_MEMTABLE).unwrap();
[INFO] [stdout]     |         ----^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> tests/lsmengine.rs:360:9
[INFO] [stdout]     |
[INFO] [stdout] 360 |     let mut engine = new_engine(&dir, "test", BIG_MEMTABLE).unwrap();
[INFO] [stdout]     |         ----^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> tests/lsmengine.rs:371:9
[INFO] [stdout]     |
[INFO] [stdout] 371 |     let mut engine = new_engine(&dir, "test", 1).unwrap(); // threshold=1, every write flushes
[INFO] [stdout]     |         ----^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> tests/lsmengine.rs:380:9
[INFO] [stdout]     |
[INFO] [stdout] 380 |     let mut engine = new_engine(&dir, "test", 1).unwrap(); // threshold=1, flushes on set
[INFO] [stdout]     |         ----^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> tests/lsmengine.rs:389:9
[INFO] [stdout]     |
[INFO] [stdout] 389 |     let mut engine = new_engine(&dir, "test", BIG_MEMTABLE).unwrap();
[INFO] [stdout]     |         ----^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> tests/lsmengine.rs:402:9
[INFO] [stdout]     |
[INFO] [stdout] 402 |     let mut engine = new_engine(&dir, "test", BIG_MEMTABLE).unwrap();
[INFO] [stdout]     |         ----^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> tests/lsmengine.rs:417:9
[INFO] [stdout]     |
[INFO] [stdout] 417 |     let mut engine = new_engine(&dir, "test", 1).unwrap();
[INFO] [stdout]     |         ----^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> tests/lsmengine.rs:434:9
[INFO] [stdout]     |
[INFO] [stdout] 434 |     let mut engine = new_engine(&dir, "test", 1).unwrap();
[INFO] [stdout]     |         ----^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> tests/lsmengine.rs:436:9
[INFO] [stdout]     |
[INFO] [stdout] 436 |     let mut engine = new_engine(&dir, "test", BIG_MEMTABLE).unwrap();
[INFO] [stdout]     |         ----^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> tests/lsmengine.rs:447:9
[INFO] [stdout]     |
[INFO] [stdout] 447 |     let mut engine = new_engine(&dir, "test", BIG_MEMTABLE).unwrap();
[INFO] [stdout]     |         ----^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> tests/lsmengine.rs:466:9
[INFO] [stdout]     |
[INFO] [stdout] 466 |     let mut engine = new_engine(&dir, "test", BIG_MEMTABLE).unwrap();
[INFO] [stdout]     |         ----^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> tests/lsmengine.rs:484:9
[INFO] [stdout]     |
[INFO] [stdout] 484 |     let mut engine = new_engine(&dir, "test", BIG_MEMTABLE).unwrap();
[INFO] [stdout]     |         ----^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> tests/lsmengine.rs:495:9
[INFO] [stdout]     |
[INFO] [stdout] 495 |     let mut engine = new_engine(&dir, "test", BIG_MEMTABLE).unwrap();
[INFO] [stdout]     |         ----^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> tests/lsmengine.rs:509:9
[INFO] [stdout]     |
[INFO] [stdout] 509 |     let mut engine = new_engine(&dir, "test", BIG_MEMTABLE).unwrap();
[INFO] [stdout]     |         ----^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> tests/lsmengine.rs:553:9
[INFO] [stdout]     |
[INFO] [stdout] 553 |     let mut engine = new_engine(&dir, "test", 1).unwrap();
[INFO] [stdout]     |         ----^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> tests/lsmengine.rs:556:9
[INFO] [stdout]     |
[INFO] [stdout] 556 |     let mut engine = engine_from_dir(&dir, "test", BIG_MEMTABLE).unwrap();
[INFO] [stdout]     |         ----^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> tests/lsmengine.rs:582:9
[INFO] [stdout]     |
[INFO] [stdout] 582 |     let mut engine = new_engine(&dir, "test", BIG_MEMTABLE).unwrap();
[INFO] [stdout]     |         ----^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> tests/lsmengine.rs:594:9
[INFO] [stdout]     |
[INFO] [stdout] 594 |     let mut engine = new_engine(&dir, "test", BIG_MEMTABLE).unwrap();
[INFO] [stdout]     |         ----^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> tests/lsmengine.rs:607:9
[INFO] [stdout]     |
[INFO] [stdout] 607 |     let mut engine = new_engine(&dir, "test", 1).unwrap();
[INFO] [stdout]     |         ----^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> tests/leveled.rs:76:9
[INFO] [stdout]    |
[INFO] [stdout] 76 |     let mut engine = new_engine(&dir, "test", BIG_MEMTABLE).unwrap();
[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: variable does not need to be mutable
[INFO] [stdout]   --> tests/leveled.rs:92:9
[INFO] [stdout]    |
[INFO] [stdout] 92 |     let mut engine = new_engine(&dir, "test", BIG_MEMTABLE).unwrap();
[INFO] [stdout]    |         ----^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> tests/db.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 20 |     let mut db = KVEngine::new(
[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: variable does not need to be mutable
[INFO] [stdout]    --> tests/leveled.rs:102:9
[INFO] [stdout]     |
[INFO] [stdout] 102 |     let mut engine = new_engine(&dir, "test", BIG_MEMTABLE).unwrap();
[INFO] [stdout]     |         ----^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> tests/db.rs:46:9
[INFO] [stdout]    |
[INFO] [stdout] 46 |     let mut db = KVEngine::new(
[INFO] [stdout]    |         ----^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> tests/leveled.rs:111:9
[INFO] [stdout]     |
[INFO] [stdout] 111 |     let mut engine = new_engine(&dir, "test", BIG_MEMTABLE).unwrap();
[INFO] [stdout]     |         ----^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> tests/db.rs:61:9
[INFO] [stdout]    |
[INFO] [stdout] 61 |     let mut db = KVEngine::new(
[INFO] [stdout]    |         ----^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> tests/db.rs:81:9
[INFO] [stdout]    |
[INFO] [stdout] 81 |     let mut db = KVEngine::new(
[INFO] [stdout]    |         ----^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> tests/db.rs:99:9
[INFO] [stdout]    |
[INFO] [stdout] 99 |     let mut db = KVEngine::new(
[INFO] [stdout]    |         ----^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> tests/leveled.rs:148:9
[INFO] [stdout]     |
[INFO] [stdout] 148 |     let mut engine = new_engine(&dir, "test", 1).unwrap();
[INFO] [stdout]     |         ----^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> tests/leveled.rs:161:9
[INFO] [stdout]     |
[INFO] [stdout] 161 |     let mut engine = new_engine(&dir, "test", 1).unwrap();
[INFO] [stdout]     |         ----^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> tests/db.rs:116:9
[INFO] [stdout]     |
[INFO] [stdout] 116 |     let mut db = KVEngine::new(
[INFO] [stdout]     |         ----^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> tests/leveled.rs:172:9
[INFO] [stdout]     |
[INFO] [stdout] 172 |     let mut engine = new_engine(&dir, "test", 1).unwrap();
[INFO] [stdout]     |         ----^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> tests/leveled.rs:187:9
[INFO] [stdout]     |
[INFO] [stdout] 187 |     let mut engine = new_engine(&dir, "test", 1).unwrap();
[INFO] [stdout]     |         ----^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> tests/db.rs:139:9
[INFO] [stdout]     |
[INFO] [stdout] 139 |     let mut db = KVEngine::new(&path, "test", 50, FSyncStrategy::Always).unwrap();
[INFO] [stdout]     |         ----^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> tests/leveled.rs:200:9
[INFO] [stdout]     |
[INFO] [stdout] 200 |     let mut engine = new_engine(&dir, "test", 1).unwrap();
[INFO] [stdout]     |         ----^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> tests/leveled.rs:212:9
[INFO] [stdout]     |
[INFO] [stdout] 212 |     let mut engine = new_engine(&dir, "test", 1).unwrap();
[INFO] [stdout]     |         ----^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> tests/db.rs:154:13
[INFO] [stdout]     |
[INFO] [stdout] 154 |         let mut db = KVEngine::new(&path, "test", 50, FSyncStrategy::Always).unwrap();
[INFO] [stdout]     |             ----^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> tests/db.rs:172:9
[INFO] [stdout]     |
[INFO] [stdout] 172 |     let mut db = KVEngine::new(&path, "test", 50, FSyncStrategy::Always).unwrap();
[INFO] [stdout]     |         ----^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> tests/db.rs:186:9
[INFO] [stdout]     |
[INFO] [stdout] 186 |     let mut db = KVEngine::new(
[INFO] [stdout]     |         ----^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> tests/db.rs:203:9
[INFO] [stdout]     |
[INFO] [stdout] 203 |     let mut db = KVEngine::new(
[INFO] [stdout]     |         ----^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> tests/leveled.rs:231:13
[INFO] [stdout]     |
[INFO] [stdout] 231 |         let mut engine = new_engine(&dir, "test", 1).unwrap();
[INFO] [stdout]     |             ----^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> tests/leveled.rs:247:13
[INFO] [stdout]     |
[INFO] [stdout] 247 |         let mut engine = new_engine(&dir, "test", 1).unwrap();
[INFO] [stdout]     |             ----^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> tests/db.rs:221:9
[INFO] [stdout]     |
[INFO] [stdout] 221 |     let mut db = KVEngine::new(
[INFO] [stdout]     |         ----^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> tests/db.rs:236:9
[INFO] [stdout]     |
[INFO] [stdout] 236 |     let mut db = KVEngine::new(&path, "test", 50, FSyncStrategy::EveryN(2)).unwrap();
[INFO] [stdout]     |         ----^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> tests/leveled.rs:281:13
[INFO] [stdout]     |
[INFO] [stdout] 281 |         let mut engine = new_engine(&dir, "test", 1).unwrap();
[INFO] [stdout]     |             ----^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> tests/leveled.rs:306:9
[INFO] [stdout]     |
[INFO] [stdout] 306 |     let mut engine = new_engine(&dir, "test", BIG_MEMTABLE).unwrap();
[INFO] [stdout]     |         ----^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> tests/leveled.rs:321:9
[INFO] [stdout]     |
[INFO] [stdout] 321 |     let mut engine = new_engine(&dir, "test", BIG_MEMTABLE).unwrap();
[INFO] [stdout]     |         ----^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> tests/leveled.rs:330:9
[INFO] [stdout]     |
[INFO] [stdout] 330 |     let mut engine = new_engine(&dir, "test", 1).unwrap();
[INFO] [stdout]     |         ----^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> tests/leveled.rs:340:9
[INFO] [stdout]     |
[INFO] [stdout] 340 |     let mut engine = new_engine(&dir, "test", BIG_MEMTABLE).unwrap();
[INFO] [stdout]     |         ----^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> tests/leveled.rs:353:9
[INFO] [stdout]     |
[INFO] [stdout] 353 |     let mut engine = new_engine(&dir, "test", BIG_MEMTABLE).unwrap();
[INFO] [stdout]     |         ----^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> tests/db.rs:250:9
[INFO] [stdout]     |
[INFO] [stdout] 250 |     let mut db = KVEngine::new(
[INFO] [stdout]     |         ----^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `redis::Cmd::execute`: Use Cmd::exec + unwrap, instead
[INFO] [stdout]    --> src/bin/redis-compare.rs:134:10
[INFO] [stdout]     |
[INFO] [stdout] 134 |         .execute(con);
[INFO] [stdout]     |          ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> tests/leveled.rs:384:9
[INFO] [stdout]     |
[INFO] [stdout] 384 |     let mut engine = new_engine(&dir, "test", BIG_MEMTABLE).unwrap();
[INFO] [stdout]     |         ----^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> tests/leveled.rs:425:9
[INFO] [stdout]     |
[INFO] [stdout] 425 |     let mut engine = new_engine(&dir, "test", 1).unwrap();
[INFO] [stdout]     |         ----^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> tests/db.rs:305:9
[INFO] [stdout]     |
[INFO] [stdout] 305 |     let mut db = KVEngine::new(
[INFO] [stdout]     |         ----^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> tests/leveled.rs:446:9
[INFO] [stdout]     |
[INFO] [stdout] 446 |     let mut engine = new_engine(&dir, "test", BIG_MEMTABLE).unwrap();
[INFO] [stdout]     |         ----^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> tests/leveled.rs:468:13
[INFO] [stdout]     |
[INFO] [stdout] 468 |         let mut engine = new_engine(&dir, "test", BIG_MEMTABLE).unwrap();
[INFO] [stdout]     |             ----^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> tests/leveled.rs:488:13
[INFO] [stdout]     |
[INFO] [stdout] 488 |         let mut engine = new_engine(&dir, "test", 1).unwrap();
[INFO] [stdout]     |             ----^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> tests/leveled.rs:492:13
[INFO] [stdout]     |
[INFO] [stdout] 492 |         let mut engine = engine_from_dir(&dir, "test", BIG_MEMTABLE).unwrap();
[INFO] [stdout]     |             ----^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> tests/db.rs:323:9
[INFO] [stdout]     |
[INFO] [stdout] 323 |     let mut db = KVEngine::new(
[INFO] [stdout]     |         ----^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> tests/db.rs:342:9
[INFO] [stdout]     |
[INFO] [stdout] 342 |     let mut db = KVEngine::new(
[INFO] [stdout]     |         ----^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> tests/leveled.rs:505:9
[INFO] [stdout]     |
[INFO] [stdout] 505 |     let mut engine = new_engine(&dir, "test", 1).unwrap();
[INFO] [stdout]     |         ----^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> tests/leveled.rs:526:9
[INFO] [stdout]     |
[INFO] [stdout] 526 |     let mut engine = new_engine(&dir, "test", 1).unwrap();
[INFO] [stdout]     |         ----^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> tests/db.rs:370:9
[INFO] [stdout]     |
[INFO] [stdout] 370 |     let mut db = KVEngine::new(
[INFO] [stdout]     |         ----^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> tests/db.rs:395:9
[INFO] [stdout]     |
[INFO] [stdout] 395 |     let mut db = KVEngine::new(
[INFO] [stdout]     |         ----^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> tests/hint.rs:92:9
[INFO] [stdout]    |
[INFO] [stdout] 92 |     let mut db = KVEngine::new(
[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: variable does not need to be mutable
[INFO] [stdout]    --> tests/hint.rs:116:13
[INFO] [stdout]     |
[INFO] [stdout] 116 |         let mut db = KVEngine::new(
[INFO] [stdout]     |             ----^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> tests/hint.rs:151:13
[INFO] [stdout]     |
[INFO] [stdout] 151 |         let mut db = KVEngine::new(
[INFO] [stdout]     |             ----^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> tests/hint.rs:187:9
[INFO] [stdout]     |
[INFO] [stdout] 187 |     let mut db = KVEngine::new(
[INFO] [stdout]     |         ----^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> tests/hint.rs:225:9
[INFO] [stdout]     |
[INFO] [stdout] 225 |     let mut db = KVEngine::new(&path, "test", 50, FSyncStrategy::Always).unwrap();
[INFO] [stdout]     |         ----^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/bin/redis-compare.rs:295:9
[INFO] [stdout]     |
[INFO] [stdout] 295 |     let mut results: Vec<(&str, f64, f64)> = Vec::new();
[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: unused variable: `results`
[INFO] [stdout]    --> src/bin/redis-compare.rs:295:9
[INFO] [stdout]     |
[INFO] [stdout] 295 |     let mut results: Vec<(&str, f64, f64)> = Vec::new();
[INFO] [stdout]     |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_results`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.18s
[INFO] running `Command { std: "docker" "inspect" "cf883ecec3567558c68d78a697fe7b6e8b9f2c3f843c64d43894ce181a41dc38", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cf883ecec3567558c68d78a697fe7b6e8b9f2c3f843c64d43894ce181a41dc38", kill_on_drop: false }`
[INFO] [stdout] cf883ecec3567558c68d78a697fe7b6e8b9f2c3f843c64d43894ce181a41dc38
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "+1.95.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 5a484e83db5cff7d73ae38648087c4f36c41c2a3ab99ef345bed15eb8964dde3
[INFO] running `Command { std: "docker" "start" "-a" "5a484e83db5cff7d73ae38648087c4f36c41c2a3ab99ef345bed15eb8964dde3", kill_on_drop: false }`
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> tests/db.rs:20:9
[INFO] [stderr]    |
[INFO] [stderr] 20 |     let mut db = KVEngine::new(
[INFO] [stderr]    |         ----^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> tests/db.rs:46:9
[INFO] [stderr]    |
[INFO] [stderr] 46 |     let mut db = KVEngine::new(
[INFO] [stderr]    |         ----^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> tests/db.rs:61:9
[INFO] [stderr]    |
[INFO] [stderr] 61 |     let mut db = KVEngine::new(
[INFO] [stderr]    |         ----^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> tests/db.rs:81:9
[INFO] [stderr]    |
[INFO] [stderr] 81 |     let mut db = KVEngine::new(
[INFO] [stderr]    |         ----^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> tests/db.rs:99:9
[INFO] [stderr]    |
[INFO] [stderr] 99 |     let mut db = KVEngine::new(
[INFO] [stderr]    |         ----^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/db.rs:116:9
[INFO] [stderr]     |
[INFO] [stderr] 116 |     let mut db = KVEngine::new(
[INFO] [stderr]     |         ----^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/db.rs:139:9
[INFO] [stderr]     |
[INFO] [stderr] 139 |     let mut db = KVEngine::new(&path, "test", 50, FSyncStrategy::Always).unwrap();
[INFO] [stderr]     |         ----^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/db.rs:154:13
[INFO] [stderr]     |
[INFO] [stderr] 154 |         let mut db = KVEngine::new(&path, "test", 50, FSyncStrategy::Always).unwrap();
[INFO] [stderr]     |             ----^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/db.rs:172:9
[INFO] [stderr]     |
[INFO] [stderr] 172 |     let mut db = KVEngine::new(&path, "test", 50, FSyncStrategy::Always).unwrap();
[INFO] [stderr]     |         ----^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/db.rs:186:9
[INFO] [stderr]     |
[INFO] [stderr] 186 |     let mut db = KVEngine::new(
[INFO] [stderr]     |         ----^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/db.rs:203:9
[INFO] [stderr]     |
[INFO] [stderr] 203 |     let mut db = KVEngine::new(
[INFO] [stderr]     |         ----^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/db.rs:221:9
[INFO] [stderr]     |
[INFO] [stderr] 221 |     let mut db = KVEngine::new(
[INFO] [stderr]     |         ----^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/db.rs:236:9
[INFO] [stderr]     |
[INFO] [stderr] 236 |     let mut db = KVEngine::new(&path, "test", 50, FSyncStrategy::EveryN(2)).unwrap();
[INFO] [stderr]     |         ----^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/db.rs:250:9
[INFO] [stderr]     |
[INFO] [stderr] 250 |     let mut db = KVEngine::new(
[INFO] [stderr]     |         ----^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/db.rs:305:9
[INFO] [stderr]     |
[INFO] [stderr] 305 |     let mut db = KVEngine::new(
[INFO] [stderr]     |         ----^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/db.rs:323:9
[INFO] [stderr]     |
[INFO] [stderr] 323 |     let mut db = KVEngine::new(
[INFO] [stderr]     |         ----^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/db.rs:342:9
[INFO] [stderr]     |
[INFO] [stderr] 342 |     let mut db = KVEngine::new(
[INFO] [stderr]     |         ----^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/db.rs:370:9
[INFO] [stderr]     |
[INFO] [stderr] 370 |     let mut db = KVEngine::new(
[INFO] [stderr]     |         ----^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/db.rs:395:9
[INFO] [stderr]     |
[INFO] [stderr] 395 |     let mut db = KVEngine::new(
[INFO] [stderr]     |         ----^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated method `redis::Cmd::execute`: Use Cmd::exec + unwrap, instead
[INFO] [stderr]    --> src/bin/redis-compare.rs:134:10
[INFO] [stderr]     |
[INFO] [stderr] 134 |         .execute(con);
[INFO] [stderr]     |          ^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/bin/redis-compare.rs:295:9
[INFO] [stderr]     |
[INFO] [stderr] 295 |     let mut results: Vec<(&str, f64, f64)> = Vec::new();
[INFO] [stderr]     |         ----^^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `results`
[INFO] [stderr]    --> src/bin/redis-compare.rs:295:9
[INFO] [stderr]     |
[INFO] [stderr] 295 |     let mut results: Vec<(&str, f64, f64)> = Vec::new();
[INFO] [stderr]     |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_results`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> tests/lsmengine.rs:38:9
[INFO] [stderr]    |
[INFO] [stderr] 38 |     let mut engine = new_engine(&dir, "test", BIG_MEMTABLE).unwrap();
[INFO] [stderr]    |         ----^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> tests/lsmengine.rs:54:9
[INFO] [stderr]    |
[INFO] [stderr] 54 |     let mut engine = new_engine(&dir, "test", BIG_MEMTABLE).unwrap();
[INFO] [stderr]    |         ----^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> tests/lsmengine.rs:64:9
[INFO] [stderr]    |
[INFO] [stderr] 64 |     let mut engine = new_engine(&dir, "test", BIG_MEMTABLE).unwrap();
[INFO] [stderr]    |         ----^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> tests/lsmengine.rs:73:9
[INFO] [stderr]    |
[INFO] [stderr] 73 |     let mut engine = new_engine(&dir, "test", BIG_MEMTABLE).unwrap();
[INFO] [stderr]    |         ----^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/lsmengine.rs:111:9
[INFO] [stderr]     |
[INFO] [stderr] 111 |     let mut engine = new_engine(&dir, "test", 1).unwrap();
[INFO] [stderr]     |         ----^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/lsmengine.rs:130:9
[INFO] [stderr]     |
[INFO] [stderr] 130 |     let mut engine = new_engine(&dir, "test", 1).unwrap();
[INFO] [stderr]     |         ----^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/lsmengine.rs:141:9
[INFO] [stderr]     |
[INFO] [stderr] 141 |     let mut engine = new_engine(&dir, "test", 1).unwrap();
[INFO] [stderr]     |         ----^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/lsmengine.rs:156:9
[INFO] [stderr]     |
[INFO] [stderr] 156 |     let mut engine = new_engine(&dir, "test", 1).unwrap();
[INFO] [stderr]     |         ----^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/lsmengine.rs:169:9
[INFO] [stderr]     |
[INFO] [stderr] 169 |     let mut engine = new_engine(&dir, "test", 1).unwrap();
[INFO] [stderr]     |         ----^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/lsmengine.rs:181:9
[INFO] [stderr]     |
[INFO] [stderr] 181 |     let mut engine = new_engine(&dir, "test", 1).unwrap();
[INFO] [stderr]     |         ----^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/lsmengine.rs:198:13
[INFO] [stderr]     |
[INFO] [stderr] 198 |         let mut engine = new_engine(&dir, "test", 1).unwrap();
[INFO] [stderr]     |             ----^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/lsmengine.rs:213:9
[INFO] [stderr]     |
[INFO] [stderr] 213 |     let mut engine = new_engine(&dir, "test", 1).unwrap();
[INFO] [stderr]     |         ----^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/lsmengine.rs:257:13
[INFO] [stderr]     |
[INFO] [stderr] 257 |         let mut engine = new_engine(&dir, "test", BIG_MEMTABLE).unwrap();
[INFO] [stderr]     |             ----^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/lsmengine.rs:285:13
[INFO] [stderr]     |
[INFO] [stderr] 285 |         let mut engine = new_engine(&dir, "test", 1).unwrap(); // threshold=1 flushes immediately
[INFO] [stderr]     |             ----^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/lsmengine.rs:289:13
[INFO] [stderr]     |
[INFO] [stderr] 289 |         let mut engine = engine_from_dir(&dir, "test", BIG_MEMTABLE).unwrap();
[INFO] [stderr]     |             ----^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/lsmengine.rs:304:13
[INFO] [stderr]     |
[INFO] [stderr] 304 |         let mut engine = new_engine(&dir, "test", BIG_MEMTABLE).unwrap();
[INFO] [stderr]     |             ----^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/lsmengine.rs:331:9
[INFO] [stderr]     |
[INFO] [stderr] 331 |     let mut engine = new_engine(&dir, "test", 1).unwrap(); // threshold=1, every write flushes
[INFO] [stderr]     |         ----^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/lsmengine.rs:345:9
[INFO] [stderr]     |
[INFO] [stderr] 345 |     let mut engine = new_engine(&dir, "test", BIG_MEMTABLE).unwrap();
[INFO] [stderr]     |         ----^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/lsmengine.rs:360:9
[INFO] [stderr]     |
[INFO] [stderr] 360 |     let mut engine = new_engine(&dir, "test", BIG_MEMTABLE).unwrap();
[INFO] [stderr]     |         ----^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/lsmengine.rs:371:9
[INFO] [stderr]     |
[INFO] [stderr] 371 |     let mut engine = new_engine(&dir, "test", 1).unwrap(); // threshold=1, every write flushes
[INFO] [stderr]     |         ----^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/lsmengine.rs:380:9
[INFO] [stderr]     |
[INFO] [stderr] 380 |     let mut engine = new_engine(&dir, "test", 1).unwrap(); // threshold=1, flushes on set
[INFO] [stderr]     |         ----^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/lsmengine.rs:389:9
[INFO] [stderr]     |
[INFO] [stderr] 389 |     let mut engine = new_engine(&dir, "test", BIG_MEMTABLE).unwrap();
[INFO] [stderr]     |         ----^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/lsmengine.rs:402:9
[INFO] [stderr]     |
[INFO] [stderr] 402 |     let mut engine = new_engine(&dir, "test", BIG_MEMTABLE).unwrap();
[INFO] [stderr]     |         ----^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/lsmengine.rs:417:9
[INFO] [stderr]     |
[INFO] [stderr] 417 |     let mut engine = new_engine(&dir, "test", 1).unwrap();
[INFO] [stderr]     |         ----^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/lsmengine.rs:434:9
[INFO] [stderr]     |
[INFO] [stderr] 434 |     let mut engine = new_engine(&dir, "test", 1).unwrap();
[INFO] [stderr]     |         ----^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/lsmengine.rs:436:9
[INFO] [stderr]     |
[INFO] [stderr] 436 |     let mut engine = new_engine(&dir, "test", BIG_MEMTABLE).unwrap();
[INFO] [stderr]     |         ----^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/lsmengine.rs:447:9
[INFO] [stderr]     |
[INFO] [stderr] 447 |     let mut engine = new_engine(&dir, "test", BIG_MEMTABLE).unwrap();
[INFO] [stderr]     |         ----^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/lsmengine.rs:466:9
[INFO] [stderr]     |
[INFO] [stderr] 466 |     let mut engine = new_engine(&dir, "test", BIG_MEMTABLE).unwrap();
[INFO] [stderr]     |         ----^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/lsmengine.rs:484:9
[INFO] [stderr]     |
[INFO] [stderr] 484 |     let mut engine = new_engine(&dir, "test", BIG_MEMTABLE).unwrap();
[INFO] [stderr]     |         ----^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/lsmengine.rs:495:9
[INFO] [stderr]     |
[INFO] [stderr] 495 |     let mut engine = new_engine(&dir, "test", BIG_MEMTABLE).unwrap();
[INFO] [stderr]     |         ----^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/lsmengine.rs:509:9
[INFO] [stderr]     |
[INFO] [stderr] 509 |     let mut engine = new_engine(&dir, "test", BIG_MEMTABLE).unwrap();
[INFO] [stderr]     |         ----^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/lsmengine.rs:553:9
[INFO] [stderr]     |
[INFO] [stderr] 553 |     let mut engine = new_engine(&dir, "test", 1).unwrap();
[INFO] [stderr]     |         ----^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/lsmengine.rs:556:9
[INFO] [stderr]     |
[INFO] [stderr] 556 |     let mut engine = engine_from_dir(&dir, "test", BIG_MEMTABLE).unwrap();
[INFO] [stderr]     |         ----^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/lsmengine.rs:582:9
[INFO] [stderr]     |
[INFO] [stderr] 582 |     let mut engine = new_engine(&dir, "test", BIG_MEMTABLE).unwrap();
[INFO] [stderr]     |         ----^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/lsmengine.rs:594:9
[INFO] [stderr]     |
[INFO] [stderr] 594 |     let mut engine = new_engine(&dir, "test", BIG_MEMTABLE).unwrap();
[INFO] [stderr]     |         ----^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/lsmengine.rs:607:9
[INFO] [stderr]     |
[INFO] [stderr] 607 |     let mut engine = new_engine(&dir, "test", 1).unwrap();
[INFO] [stderr]     |         ----^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> tests/hint.rs:92:9
[INFO] [stderr]    |
[INFO] [stderr] 92 |     let mut db = KVEngine::new(
[INFO] [stderr]    |         ----^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/hint.rs:116:13
[INFO] [stderr]     |
[INFO] [stderr] 116 |         let mut db = KVEngine::new(
[INFO] [stderr]     |             ----^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/hint.rs:151:13
[INFO] [stderr]     |
[INFO] [stderr] 151 |         let mut db = KVEngine::new(
[INFO] [stderr]     |             ----^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/hint.rs:187:9
[INFO] [stderr]     |
[INFO] [stderr] 187 |     let mut db = KVEngine::new(
[INFO] [stderr]     |         ----^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/hint.rs:225:9
[INFO] [stderr]     |
[INFO] [stderr] 225 |     let mut db = KVEngine::new(&path, "test", 50, FSyncStrategy::Always).unwrap();
[INFO] [stderr]     |         ----^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> tests/worker.rs:75:9
[INFO] [stderr]    |
[INFO] [stderr] 75 |     let mut db = KVEngine::new(
[INFO] [stderr]    |         ----^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> tests/worker.rs:93:9
[INFO] [stderr]    |
[INFO] [stderr] 93 |     let mut db = KVEngine::new(
[INFO] [stderr]    |         ----^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: `rustikv` (test "db") generated 19 warnings (run `cargo fix --test "db" -p rustikv` to apply 19 suggestions)
[INFO] [stderr] warning: `rustikv` (bin "redis-compare" test) generated 3 warnings (run `cargo fix --bin "redis-compare" -p rustikv --tests` to apply 2 suggestions)
[INFO] [stderr] warning: `rustikv` (test "lsmengine") generated 36 warnings (run `cargo fix --test "lsmengine" -p rustikv` to apply 36 suggestions)
[INFO] [stderr] warning: `rustikv` (test "hint") generated 5 warnings (run `cargo fix --test "hint" -p rustikv` to apply 5 suggestions)
[INFO] [stderr] warning: `rustikv` (test "worker") generated 2 warnings (run `cargo fix --test "worker" -p rustikv` to apply 2 suggestions)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> tests/leveled.rs:76:9
[INFO] [stderr]    |
[INFO] [stderr] 76 |     let mut engine = new_engine(&dir, "test", BIG_MEMTABLE).unwrap();
[INFO] [stderr]    |         ----^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> tests/leveled.rs:92:9
[INFO] [stderr]    |
[INFO] [stderr] 92 |     let mut engine = new_engine(&dir, "test", BIG_MEMTABLE).unwrap();
[INFO] [stderr]    |         ----^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/leveled.rs:102:9
[INFO] [stderr]     |
[INFO] [stderr] 102 |     let mut engine = new_engine(&dir, "test", BIG_MEMTABLE).unwrap();
[INFO] [stderr]     |         ----^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/leveled.rs:111:9
[INFO] [stderr]     |
[INFO] [stderr] 111 |     let mut engine = new_engine(&dir, "test", BIG_MEMTABLE).unwrap();
[INFO] [stderr]     |         ----^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/leveled.rs:148:9
[INFO] [stderr]     |
[INFO] [stderr] 148 |     let mut engine = new_engine(&dir, "test", 1).unwrap();
[INFO] [stderr]     |         ----^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/leveled.rs:161:9
[INFO] [stderr]     |
[INFO] [stderr] 161 |     let mut engine = new_engine(&dir, "test", 1).unwrap();
[INFO] [stderr]     |         ----^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/leveled.rs:172:9
[INFO] [stderr]     |
[INFO] [stderr] 172 |     let mut engine = new_engine(&dir, "test", 1).unwrap();
[INFO] [stderr]     |         ----^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/leveled.rs:187:9
[INFO] [stderr]     |
[INFO] [stderr] 187 |     let mut engine = new_engine(&dir, "test", 1).unwrap();
[INFO] [stderr]     |         ----^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/leveled.rs:200:9
[INFO] [stderr]     |
[INFO] [stderr] 200 |     let mut engine = new_engine(&dir, "test", 1).unwrap();
[INFO] [stderr]     |         ----^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/leveled.rs:212:9
[INFO] [stderr]     |
[INFO] [stderr] 212 |     let mut engine = new_engine(&dir, "test", 1).unwrap();
[INFO] [stderr]     |         ----^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/leveled.rs:231:13
[INFO] [stderr]     |
[INFO] [stderr] 231 |         let mut engine = new_engine(&dir, "test", 1).unwrap();
[INFO] [stderr]     |             ----^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/leveled.rs:247:13
[INFO] [stderr]     |
[INFO] [stderr] 247 |         let mut engine = new_engine(&dir, "test", 1).unwrap();
[INFO] [stderr]     |             ----^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/leveled.rs:281:13
[INFO] [stderr]     |
[INFO] [stderr] 281 |         let mut engine = new_engine(&dir, "test", 1).unwrap();
[INFO] [stderr]     |             ----^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/leveled.rs:306:9
[INFO] [stderr]     |
[INFO] [stderr] 306 |     let mut engine = new_engine(&dir, "test", BIG_MEMTABLE).unwrap();
[INFO] [stderr]     |         ----^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/leveled.rs:321:9
[INFO] [stderr]     |
[INFO] [stderr] 321 |     let mut engine = new_engine(&dir, "test", BIG_MEMTABLE).unwrap();
[INFO] [stderr]     |         ----^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/leveled.rs:330:9
[INFO] [stderr]     |
[INFO] [stderr] 330 |     let mut engine = new_engine(&dir, "test", 1).unwrap();
[INFO] [stderr]     |         ----^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/leveled.rs:340:9
[INFO] [stderr]     |
[INFO] [stderr] 340 |     let mut engine = new_engine(&dir, "test", BIG_MEMTABLE).unwrap();
[INFO] [stderr]     |         ----^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/leveled.rs:353:9
[INFO] [stderr]     |
[INFO] [stderr] 353 |     let mut engine = new_engine(&dir, "test", BIG_MEMTABLE).unwrap();
[INFO] [stderr]     |         ----^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/leveled.rs:384:9
[INFO] [stderr]     |
[INFO] [stderr] 384 |     let mut engine = new_engine(&dir, "test", BIG_MEMTABLE).unwrap();
[INFO] [stderr]     |         ----^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/leveled.rs:425:9
[INFO] [stderr]     |
[INFO] [stderr] 425 |     let mut engine = new_engine(&dir, "test", 1).unwrap();
[INFO] [stderr]     |         ----^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/leveled.rs:446:9
[INFO] [stderr]     |
[INFO] [stderr] 446 |     let mut engine = new_engine(&dir, "test", BIG_MEMTABLE).unwrap();
[INFO] [stderr]     |         ----^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/leveled.rs:468:13
[INFO] [stderr]     |
[INFO] [stderr] 468 |         let mut engine = new_engine(&dir, "test", BIG_MEMTABLE).unwrap();
[INFO] [stderr]     |             ----^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/leveled.rs:488:13
[INFO] [stderr]     |
[INFO] [stderr] 488 |         let mut engine = new_engine(&dir, "test", 1).unwrap();
[INFO] [stderr]     |             ----^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/leveled.rs:492:13
[INFO] [stderr]     |
[INFO] [stderr] 492 |         let mut engine = engine_from_dir(&dir, "test", BIG_MEMTABLE).unwrap();
[INFO] [stderr]     |             ----^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/leveled.rs:505:9
[INFO] [stderr]     |
[INFO] [stderr] 505 |     let mut engine = new_engine(&dir, "test", 1).unwrap();
[INFO] [stderr]     |         ----^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/leveled.rs:526:9
[INFO] [stderr]     |
[INFO] [stderr] 526 |     let mut engine = new_engine(&dir, "test", 1).unwrap();
[INFO] [stderr]     |         ----^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: `rustikv` (test "leveled") generated 26 warnings (run `cargo fix --test "leveled" -p rustikv` to apply 26 suggestions)
[INFO] [stderr] warning: `rustikv` (bin "redis-compare") generated 3 warnings (3 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/rustikv-0fb940ce08cf2383)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/engbench.rs (/opt/rustwide/target/debug/deps/engbench-41d29b06b7d87a06)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/kvbench.rs (/opt/rustwide/target/debug/deps/kvbench-fa50a60af408db67)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/lz77bench.rs (/opt/rustwide/target/debug/deps/lz77bench-3e07e6d5574a4c29)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/redis-compare.rs (/opt/rustwide/target/debug/deps/redis_compare-dacf9a73c347fe6e)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/rustikli.rs (/opt/rustwide/target/debug/deps/rustikli-ee41f25c9da3e285)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/rustikv-2456e6ae4c8af68e)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/block_sstable.rs (/opt/rustwide/target/debug/deps/block_sstable-ffb655f5ef2e5afb)
[INFO] [stdout] 
[INFO] [stdout] running 19 tests
[INFO] [stdout] test test_block_header_big_endian ... ok
[INFO] [stdout] test test_block_header_roundtrip_zero ... ok
[INFO] [stdout] test test_block_roundtrip_uncompressed ... ok
[INFO] [stdout] test test_block_header_serialization ... ok
[INFO] [stdout] test test_block_writer_exceeds_target_size ... ok
[INFO] [stdout] test test_block_writer_flush_empty_produces_none ... ok
[INFO] [stdout] test test_block_roundtrip_compressed ... ok
[INFO] [stdout] test test_block_writer_flush_produces_block ... ok
[INFO] [stdout] test test_sstable_from_memtable_blocks ... ok
[INFO] [stdout] test test_lsm_block_missing_key_returns_none ... ok
[INFO] [stdout] test test_sstable_get_missing_key ... ok
[INFO] [stdout] test test_sstable_get_from_blocks ... ok
[INFO] [stdout] test test_sstable_iter_blocks ... ok
[INFO] [stdout] test test_lsm_block_delete_hides_value ... ok
[INFO] [stdout] test test_sstable_rebuild_index ... ok
[INFO] [stdout] test test_lsm_block_overwrite_reads_latest ... ok
[INFO] [stdout] test test_lsm_block_compact_drops_deleted_keys ... ok
[INFO] [stdout] test test_lsm_block_set_get_across_sstable ... ok
[INFO] [stdout] test test_lsm_block_compact_preserves_values ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 19 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/bloom.rs (/opt/rustwide/target/debug/deps/bloom-80846a1131abf3c0)
[INFO] [stdout] 
[INFO] [stdout] running 8 tests
[INFO] [stdout] test different_hash_counts_all_work ... ok
[INFO] [stdout] test missing_key_not_found ... ok
[INFO] [stdout] test empty_filter_returns_false ... ok
[INFO] [stdout] test multiple_inserted_keys_are_found ... ok
[INFO] [stdout] test inserted_key_is_found ... ok
[INFO] [stdout] test single_byte_filter_works ... ok
[INFO] [stdout] test no_false_negatives ... ok
[INFO] [stdout] test false_positive_rate_is_bounded ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 8 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/compact_async.rs (/opt/rustwide/target/debug/deps/compact_async-334ce78190b233aa)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test stats_counters_increment ... ok
[INFO] [stdout] test stats_show_write_blocked_during_compaction ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.28s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/compact_tcp.rs (/opt/rustwide/target/debug/deps/compact_tcp-3e287ced249e497b)
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test compact_command_over_tcp ... ok
[INFO] [stdout] test write_preserves_leading_and_trailing_spaces_in_value ... ok
[INFO] [stdout] test write_preserves_tab_in_value ... ok
[INFO] [stdout] test write_preserves_multiple_spaces_in_value ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.19s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/concurrency.rs (/opt/rustwide/target/debug/deps/concurrency-f21f2a20688cff33)
[INFO] [stdout] 
[INFO] [stdout] running 14 tests
[INFO] [stdout] test lsm_concurrent_deletes_and_reads ... ok
[INFO] [stdout] test kv_compact_during_reads_and_writes ... ok
[INFO] [stdout] test lsm_concurrent_writers ... ok
[INFO] [stdout] test lsm_concurrent_readers ... ok
[INFO] [stdout] test lsm_concurrent_reads_and_writes ... ok
[INFO] [stdout] test kv_concurrent_writers ... ok
[INFO] [stdout] test kv_concurrent_deletes_and_reads ... ok
[INFO] [stdout] test lsm_concurrent_range_scan_during_writes ... ok
[INFO] [stdout] test lsm_concurrent_list_keys_during_writes ... ok
[INFO] [stdout] test kv_concurrent_writes_with_segment_roll ... ok
[INFO] [stdout] test lsm_compact_during_reads_and_writes ... ok
[INFO] [stdout] test lsm_concurrent_writes_trigger_flush ... ok
[INFO] [stdout] test kv_concurrent_readers ... ok
[INFO] [stdout] test kv_concurrent_reads_and_writes ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 14 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.78s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/crc.rs (/opt/rustwide/target/debug/deps/crc-caa37ec65fd19ff1)
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test known_test_vector ... ok
[INFO] [stdout] test valid_record_roundtrip ... ok
[INFO] [stdout] test corrupted_value_detected ... ok
[INFO] [stdout] test corrupted_header_detected ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/db.rs (/opt/rustwide/target/debug/deps/db-585492567bd5cab1)
[INFO] [stdout] 
[INFO] [stdout] running 26 tests
[INFO] [stdout] test exists_returns_false_after_delete ... ok
[INFO] [stdout] test exists_returns_false_for_missing_key ... ok
[INFO] [stdout] test list_keys_excludes_deleted_keys ... ok
[INFO] [stdout] test exists_returns_true_after_set ... ok
[INFO] [stdout] test get_missing_key ... ok
[INFO] [stdout] test list_keys_deduplicates_overwritten_keys ... ok
[INFO] [stdout] test list_keys_empty_db ... ok
[INFO] [stdout] test list_keys_returns_all_live_keys ... ok
[INFO] [stdout] test from_dir_loads_all_segments ... ok
[INFO] [stdout] test compact_keeps_latest_value ... ok
[INFO] [stdout] test set_and_get ... ok
[INFO] [stdout] test compact_drops_deleted_keys ... ok
[INFO] [stdout] test set_overwrite ... ok
[INFO] [stdout] test compact_is_idempotent ... ok
[INFO] [stdout] test sync_never_writes_are_readable ... ok
[INFO] [stdout] test segment_rolls_when_full ... ok
[INFO] [stdout] test compact_preserves_values ... ok
[INFO] [stdout] test sync_never_delete_works ... ok
[INFO] [stdout] test concurrent_delete_and_read ... ok
[INFO] [stdout] test sync_every_n_writes_are_readable ... ok
[INFO] [stdout] test sync_every_n_compaction_preserves_data ... ok
[INFO] [stdout] test compact_merges_segments ... ok
[INFO] [stdout] test concurrent_reads_and_writes ... ok
[INFO] [stdout] test concurrent_overwrite_last_writer_wins ... ok
[INFO] [stdout] test concurrent_writes_no_lost_keys ... ok
[INFO] [stdout] test concurrent_reads_return_correct_values ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 26 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.76s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/hint.rs (/opt/rustwide/target/debug/deps/hint-e67ade29abb18fd8)
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test hint_entry_round_trip ... ok
[INFO] [stdout] test hint_read_empty_file ... ok
[INFO] [stdout] test from_dir_falls_back_without_hint_files ... ok
[INFO] [stdout] test compaction_produces_hint_files ... ok
[INFO] [stdout] test from_dir_loads_via_hint_files ... ok
[INFO] [stdout] test compaction_cleans_up_old_hint_files ... ok
[INFO] [stdout] test hint_files_with_multi_segment_compaction ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/leveled.rs (/opt/rustwide/target/debug/deps/leveled-744bf396cf112845)
[INFO] [stdout] 
[INFO] [stdout] running 34 tests
[INFO] [stdout] test delete_nonexistent_key ... ok
[INFO] [stdout] test delete_removes_key ... ok
[INFO] [stdout] test exists_returns_false_after_delete ... ok
[INFO] [stdout] test exists_returns_true_after_set ... ok
[INFO] [stdout] test exists_returns_false_for_missing_key ... ok
[INFO] [stdout] test get_missing_key ... ok
[INFO] [stdout] test list_keys_excludes_deleted_keys ... ok
[INFO] [stdout] test list_keys_returns_all_live_keys ... ok
[INFO] [stdout] test delete_shadows_flushed_value ... ok
[INFO] [stdout] test exists_returns_true_for_flushed_key ... ok
[INFO] [stdout] test parse_level_0_filename ... ok
[INFO] [stdout] test range_basic_memtable ... ok
[INFO] [stdout] test compact_keeps_latest_value ... ok
[INFO] [stdout] test parse_leveled_filename ... ok
[INFO] [stdout] test memtable_flushes_to_sstable ... ok
[INFO] [stdout] test from_dir_reloads_segments ... ok
[INFO] [stdout] test parse_non_leveled_filename ... ok
[INFO] [stdout] test compact_is_idempotent ... ok
[INFO] [stdout] test compact_drops_deleted_keys ... ok
[INFO] [stdout] test range_tombstone_suppression ... ok
[INFO] [stdout] test compact_preserves_values ... ok
[INFO] [stdout] test set_overwrite ... ok
[INFO] [stdout] test wal_recovers_unflushed_writes ... ok
[INFO] [stdout] test list_keys_spans_memtable_and_segments ... ok
[INFO] [stdout] test range_spans_memtable_and_segment ... ok
[INFO] [stdout] test set_and_get ... ok
[INFO] [stdout] test reads_span_memtable_and_segments ... ok
[INFO] [stdout] test wal_recovers_unflushed_delete ... ok
[INFO] [stdout] test segment_count_after_compact ... ok
[INFO] [stdout] test from_dir_preserves_level_in_filename ... ok
[INFO] [stdout] test range_after_compaction ... ok
[INFO] [stdout] test from_dir_reloads_after_compaction ... ok
[INFO] [stdout] test compact_overwrites_keep_latest ... ok
[INFO] [stdout] test compact_many_keys_preserves_all ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 34 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.04s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/lsmengine.rs (/opt/rustwide/target/debug/deps/lsmengine-21a10b126d4cd661)
[INFO] [stdout] 
[INFO] [stdout] running 44 tests
[INFO] [stdout] test delete_nonexistent_key ... ok
[INFO] [stdout] test compact_drops_deleted_keys ... ok
[INFO] [stdout] test delete_removes_key ... ok
[INFO] [stdout] test compact_preserves_values ... ok
[INFO] [stdout] test exists_returns_false_after_delete ... ok
[INFO] [stdout] test exists_returns_false_for_missing_key ... ok
[INFO] [stdout] test compact_is_idempotent ... ok
[INFO] [stdout] test compact_keeps_latest_value ... ok
[INFO] [stdout] test get_missing_key ... ok
[INFO] [stdout] test exists_returns_true_after_set ... ok
[INFO] [stdout] test list_keys_excludes_deleted_keys ... ok
[INFO] [stdout] test concurrent_reads_and_writes ... ok
[INFO] [stdout] test list_keys_spans_memtable_and_segments ... ok
[INFO] [stdout] test exists_returns_true_for_flushed_key ... ok
[INFO] [stdout] test list_keys_returns_all_live_keys ... ok
[INFO] [stdout] test compact_reduces_segment_count ... ok
[INFO] [stdout] test from_dir_reloads_segments ... ok
[INFO] [stdout] test delete_shadows_flushed_value ... ok
[INFO] [stdout] test list_keys_tombstone_in_memtable_hides_flushed_key ... ok
[INFO] [stdout] test memtable_flushes_to_sstable ... ok
[INFO] [stdout] test range_basic_memtable ... ok
[INFO] [stdout] test exists_returns_false_for_tombstoned_flushed_key ... ok
[INFO] [stdout] test range_empty_when_no_keys_in_range ... ok
[INFO] [stdout] test range_returns_sorted_order ... ok
[INFO] [stdout] test range_single_key ... ok
[INFO] [stdout] test range_inverted_bounds_returns_empty ... ok
[INFO] [stdout] test range_inclusive_bounds ... ok
[INFO] [stdout] test range_tombstone_suppression ... ok
[INFO] [stdout] test range_memtable_wins_over_segment ... ok
[INFO] [stdout] test set_and_get ... ok
[INFO] [stdout] test set_overwrite ... ok
[INFO] [stdout] test wal_recovers_unflushed_writes ... ok
[INFO] [stdout] test wal_corrupt_tail_does_not_panic ... ok
[INFO] [stdout] test range_spans_memtable_and_segment ... ok
[INFO] [stdout] test wal_is_absent_after_flush ... ok
[INFO] [stdout] test concurrent_reads_return_correct_values ... ok
[INFO] [stdout] test wal_recovers_unflushed_delete ... ok
[INFO] [stdout] test concurrent_writes_no_lost_keys ... ok
[INFO] [stdout] test range_tombstone_in_memtable_hides_flushed_key ... ok
[INFO] [stdout] test reads_span_memtable_and_segments ... ok
[INFO] [stdout] test range_after_compaction ... ok
[INFO] [stdout] test concurrent_delete_and_read ... ok
[INFO] [stdout] test concurrent_overwrite_last_writer_wins ... ok
[INFO] [stdout] test concurrent_writes_trigger_flush ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 44 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.16s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/lz77.rs (/opt/rustwide/target/debug/deps/lz77-063d628daebc0af3)
[INFO] [stdout] 
[INFO] [stdout] running 15 tests
[INFO] [stdout] test test_lz77_binary_data ... ok
[INFO] [stdout] test test_lz77_empty ... ok
[INFO] [stdout] test test_lz77_no_repetition ... ok
[INFO] [stdout] test test_lz77_pattern_at_boundary ... ok
[INFO] [stdout] test test_lz77_mixed_patterns ... ok
[INFO] [stdout] test test_lz77_random_data ... ok
[INFO] [stdout] test test_lz77_long_repetition ... ok
[INFO] [stdout] test test_lz77_roundtrip_highly_repetitive ... ok
[INFO] [stdout] test test_lz77_roundtrip_with_repetition ... ok
[INFO] [stdout] test test_lz77_single_byte ... ok
[INFO] [stdout] test test_lz77_two_bytes ... ok
[INFO] [stdout] test test_lz77_roundtrip_simple ... ok
[INFO] [stdout] test test_lz77_roundtrip_large_data ... ok
[INFO] [stdout] test test_lz77_compression_ratio ... ok
[INFO] [stdout] test test_lz77_encode_large_repetitive_is_bounded ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- test_lz77_encode_large_repetitive_is_bounded stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'test_lz77_encode_large_repetitive_is_bounded' (936) panicked at tests/lz77.rs:142:5:
[INFO] [stdout] encoding 1 MB of identical bytes took 4.186142048s — expected < 3s (O(N*MAX_CHAIN)); O(N^2) indicates the chain-skip path is unbounded
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x638c1151f20a - std[e28293b1aa0f68bd]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stdout]                                at /rustc/59807616e1fa2540724bfbac14d7976d7e4a3860/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x638c1151f20a - std[e28293b1aa0f68bd]::backtrace_rs::backtrace::trace_unsynchronized::<std[e28293b1aa0f68bd]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stdout]                                at /rustc/59807616e1fa2540724bfbac14d7976d7e4a3860/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x638c1151f20a - std[e28293b1aa0f68bd]::sys::backtrace::_print_fmt
[INFO] [stdout]                                at /rustc/59807616e1fa2540724bfbac14d7976d7e4a3860/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x638c1151f20a - <<std[e28293b1aa0f68bd]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[c1f1a4ba060b9bfa]::fmt::Display>::fmt
[INFO] [stdout]                                at /rustc/59807616e1fa2540724bfbac14d7976d7e4a3860/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x638c11532eaa - <core[c1f1a4ba060b9bfa]::fmt::rt::Argument>::fmt
[INFO] [stdout]                                at /rustc/59807616e1fa2540724bfbac14d7976d7e4a3860/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x638c11532eaa - core[c1f1a4ba060b9bfa]::fmt::write
[INFO] [stdout]    6:     0x638c11523a92 - std[e28293b1aa0f68bd]::io::default_write_fmt::<alloc[fdfd2bd8633a6659]::vec::Vec<u8>>
[INFO] [stdout]                                at /rustc/59807616e1fa2540724bfbac14d7976d7e4a3860/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x638c11523a92 - <alloc[fdfd2bd8633a6659]::vec::Vec<u8> as std[e28293b1aa0f68bd]::io::Write>::write_fmt
[INFO] [stdout]                                at /rustc/59807616e1fa2540724bfbac14d7976d7e4a3860/library/std/src/io/mod.rs:1994:13
[INFO] [stdout]    8:     0x638c114fe41f - <std[e28293b1aa0f68bd]::sys::backtrace::BacktraceLock>::print
[INFO] [stdout]                                at /rustc/59807616e1fa2540724bfbac14d7976d7e4a3860/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x638c114fe41f - std[e28293b1aa0f68bd]::panicking::default_hook::{closure#0}
[INFO] [stdout]                                at /rustc/59807616e1fa2540724bfbac14d7976d7e4a3860/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x638c11517779 - std[e28293b1aa0f68bd]::panicking::default_hook
[INFO] [stdout]                                at /rustc/59807616e1fa2540724bfbac14d7976d7e4a3860/library/std/src/panicking.rs:316:9
[INFO] [stdout]   11:     0x638c114b014c - <alloc[fdfd2bd8633a6659]::boxed::Box<dyn for<'a, 'b> core[c1f1a4ba060b9bfa]::ops::function::Fn<(&'a std[e28293b1aa0f68bd]::panic::PanicHookInfo<'b>,), Output = ()> + core[c1f1a4ba060b9bfa]::marker::Sync + core[c1f1a4ba060b9bfa]::marker::Send> as core[c1f1a4ba060b9bfa]::ops::function::Fn<(&std[e28293b1aa0f68bd]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/59807616e1fa2540724bfbac14d7976d7e4a3860/library/alloc/src/boxed.rs:2254:9
[INFO] [stdout]   12:     0x638c114b014c - test[273d7611820c9051]::test_main_with_exit_callback::<test[273d7611820c9051]::test_main::{closure#0}>::{closure#0}
[INFO] [stdout]                                at /rustc/59807616e1fa2540724bfbac14d7976d7e4a3860/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x638c11517932 - <alloc[fdfd2bd8633a6659]::boxed::Box<dyn for<'a, 'b> core[c1f1a4ba060b9bfa]::ops::function::Fn<(&'a std[e28293b1aa0f68bd]::panic::PanicHookInfo<'b>,), Output = ()> + core[c1f1a4ba060b9bfa]::marker::Sync + core[c1f1a4ba060b9bfa]::marker::Send> as core[c1f1a4ba060b9bfa]::ops::function::Fn<(&std[e28293b1aa0f68bd]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/59807616e1fa2540724bfbac14d7976d7e4a3860/library/alloc/src/boxed.rs:2254:9
[INFO] [stdout]   14:     0x638c11517932 - std[e28293b1aa0f68bd]::panicking::panic_with_hook
[INFO] [stdout]                                at /rustc/59807616e1fa2540724bfbac14d7976d7e4a3860/library/std/src/panicking.rs:833:13
[INFO] [stdout]   15:     0x638c114fe4d8 - std[e28293b1aa0f68bd]::panicking::panic_handler::{closure#0}
[INFO] [stdout]                                at /rustc/59807616e1fa2540724bfbac14d7976d7e4a3860/library/std/src/panicking.rs:698:13
[INFO] [stdout]   16:     0x638c114f5e79 - std[e28293b1aa0f68bd]::sys::backtrace::__rust_end_short_backtrace::<std[e28293b1aa0f68bd]::panicking::panic_handler::{closure#0}, !>
[INFO] [stdout]                                at /rustc/59807616e1fa2540724bfbac14d7976d7e4a3860/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x638c114ff1ed - __rustc[b7974e8690430dd9]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/59807616e1fa2540724bfbac14d7976d7e4a3860/library/std/src/panicking.rs:689:5
[INFO] [stdout]   18:     0x638c1153371c - core[c1f1a4ba060b9bfa]::panicking::panic_fmt
[INFO] [stdout]                                at /rustc/59807616e1fa2540724bfbac14d7976d7e4a3860/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x638c114a333f - lz77::test_lz77_encode_large_repetitive_is_bounded::h79cf789b2c5835b0
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/lz77.rs:142:5
[INFO] [stdout]   20:     0x638c114a3387 - lz77::test_lz77_encode_large_repetitive_is_bounded::{{closure}}::hc07639d1f38d45ac
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/lz77.rs:130:50
[INFO] [stdout]   21:     0x638c114a0c26 - core::ops::function::FnOnce::call_once::h692a6b11793d3bfa
[INFO] [stdout]                                at /rustc/59807616e1fa2540724bfbac14d7976d7e4a3860/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   22:     0x638c114a422b - <fn() -> core[c1f1a4ba060b9bfa]::result::Result<(), alloc[fdfd2bd8633a6659]::string::String> as core[c1f1a4ba060b9bfa]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/59807616e1fa2540724bfbac14d7976d7e4a3860/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   23:     0x638c114a422b - test[273d7611820c9051]::__rust_begin_short_backtrace::<core[c1f1a4ba060b9bfa]::result::Result<(), alloc[fdfd2bd8633a6659]::string::String>, fn() -> core[c1f1a4ba060b9bfa]::result::Result<(), alloc[fdfd2bd8633a6659]::string::String>>
[INFO] [stdout]                                at /rustc/59807616e1fa2540724bfbac14d7976d7e4a3860/library/test/src/lib.rs:663:18
[INFO] [stdout]   24:     0x638c114b0c1b - test[273d7611820c9051]::run_test_in_process::{closure#0}
[INFO] [stdout]                                at /rustc/59807616e1fa2540724bfbac14d7976d7e4a3860/library/test/src/lib.rs:686:74
[INFO] [stdout]   25:     0x638c114b0c1b - <core[c1f1a4ba060b9bfa]::panic::unwind_safe::AssertUnwindSafe<test[273d7611820c9051]::run_test_in_process::{closure#0}> as core[c1f1a4ba060b9bfa]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/59807616e1fa2540724bfbac14d7976d7e4a3860/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   26:     0x638c114b0c1b - std[e28293b1aa0f68bd]::panicking::catch_unwind::do_call::<core[c1f1a4ba060b9bfa]::panic::unwind_safe::AssertUnwindSafe<test[273d7611820c9051]::run_test_in_process::{closure#0}>, core[c1f1a4ba060b9bfa]::result::Result<(), alloc[fdfd2bd8633a6659]::string::String>>
[INFO] [stdout]                                at /rustc/59807616e1fa2540724bfbac14d7976d7e4a3860/library/std/src/panicking.rs:581:40
[INFO] [stdout]   27:     0x638c114b0c1b - std[e28293b1aa0f68bd]::panicking::catch_unwind::<core[c1f1a4ba060b9bfa]::result::Result<(), alloc[fdfd2bd8633a6659]::string::String>, core[c1f1a4ba060b9bfa]::panic::unwind_safe::AssertUnwindSafe<test[273d7611820c9051]::run_test_in_process::{closure#0}>>
[INFO] [stdout]                                at /rustc/59807616e1fa2540724bfbac14d7976d7e4a3860/library/std/src/panicking.rs:544:19
[INFO] [stdout]   28:     0x638c114b0c1b - std[e28293b1aa0f68bd]::panic::catch_unwind::<core[c1f1a4ba060b9bfa]::panic::unwind_safe::AssertUnwindSafe<test[273d7611820c9051]::run_test_in_process::{closure#0}>, core[c1f1a4ba060b9bfa]::result::Result<(), alloc[fdfd2bd8633a6659]::string::String>>
[INFO] [stdout]                                at /rustc/59807616e1fa2540724bfbac14d7976d7e4a3860/library/std/src/panic.rs:359:14
[INFO] [stdout]   29:     0x638c114b0c1b - test[273d7611820c9051]::run_test_in_process
[INFO] [stdout]                                at /rustc/59807616e1fa2540724bfbac14d7976d7e4a3860/library/test/src/lib.rs:686:27
[INFO] [stdout]   30:     0x638c114b0c1b - test[273d7611820c9051]::run_test::{closure#0}
[INFO] [stdout]                                at /rustc/59807616e1fa2540724bfbac14d7976d7e4a3860/library/test/src/lib.rs:607:43
[INFO] [stdout]   31:     0x638c114ac334 - test[273d7611820c9051]::run_test::{closure#1}
[INFO] [stdout]                                at /rustc/59807616e1fa2540724bfbac14d7976d7e4a3860/library/test/src/lib.rs:637:41
[INFO] [stdout]   32:     0x638c114ac334 - std[e28293b1aa0f68bd]::sys::backtrace::__rust_begin_short_backtrace::<test[273d7611820c9051]::run_test::{closure#1}, ()>
[INFO] [stdout]                                at /rustc/59807616e1fa2540724bfbac14d7976d7e4a3860/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   33:     0x638c114b3822 - std[e28293b1aa0f68bd]::thread::lifecycle::spawn_unchecked::<test[273d7611820c9051]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}
[INFO] [stdout]                                at /rustc/59807616e1fa2540724bfbac14d7976d7e4a3860/library/std/src/thread/lifecycle.rs:91:13
[INFO] [stdout]   34:     0x638c114b3822 - <core[c1f1a4ba060b9bfa]::panic::unwind_safe::AssertUnwindSafe<std[e28293b1aa0f68bd]::thread::lifecycle::spawn_unchecked<test[273d7611820c9051]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}> as core[c1f1a4ba060b9bfa]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/59807616e1fa2540724bfbac14d7976d7e4a3860/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   35:     0x638c114b3822 - std[e28293b1aa0f68bd]::panicking::catch_unwind::do_call::<core[c1f1a4ba060b9bfa]::panic::unwind_safe::AssertUnwindSafe<std[e28293b1aa0f68bd]::thread::lifecycle::spawn_unchecked<test[273d7611820c9051]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/59807616e1fa2540724bfbac14d7976d7e4a3860/library/std/src/panicking.rs:581:40
[INFO] [stdout]   36:     0x638c114b3822 - std[e28293b1aa0f68bd]::panicking::catch_unwind::<(), core[c1f1a4ba060b9bfa]::panic::unwind_safe::AssertUnwindSafe<std[e28293b1aa0f68bd]::thread::lifecycle::spawn_unchecked<test[273d7611820c9051]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>>
[INFO] [stdout]                                at /rustc/59807616e1fa2540724bfbac14d7976d7e4a3860/library/std/src/panicking.rs:544:19
[INFO] [stdout]   37:     0x638c114b3822 - std[e28293b1aa0f68bd]::panic::catch_unwind::<core[c1f1a4ba060b9bfa]::panic::unwind_safe::AssertUnwindSafe<std[e28293b1aa0f68bd]::thread::lifecycle::spawn_unchecked<test[273d7611820c9051]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/59807616e1fa2540724bfbac14d7976d7e4a3860/library/std/src/panic.rs:359:14
[INFO] [stdout]   38:     0x638c114b3822 - std[e28293b1aa0f68bd]::thread::lifecycle::spawn_unchecked::<test[273d7611820c9051]::run_test::{closure#1}, ()>::{closure#1}
[INFO] [stdout]                                at /rustc/59807616e1fa2540724bfbac14d7976d7e4a3860/library/std/src/thread/lifecycle.rs:89:26
[INFO] [stdout]   39:     0x638c114b3822 - <std[e28293b1aa0f68bd]::thread::lifecycle::spawn_unchecked<test[273d7611820c9051]::run_test::{closure#1}, ()>::{closure#1} as core[c1f1a4ba060b9bfa]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stdout]                                at /rustc/59807616e1fa2540724bfbac14d7976d7e4a3860/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   40:     0x638c1151eb1f - <alloc[fdfd2bd8633a6659]::boxed::Box<dyn core[c1f1a4ba060b9bfa]::ops::function::FnOnce<(), Output = ()> + core[c1f1a4ba060b9bfa]::marker::Send> as core[c1f1a4ba060b9bfa]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/59807616e1fa2540724bfbac14d7976d7e4a3860/library/alloc/src/boxed.rs:2240:9
[INFO] [stdout]   41:     0x638c1151eb1f - <std[e28293b1aa0f68bd]::sys::thread::unix::Thread>::new::thread_start
[INFO] [stdout]                                at /rustc/59807616e1fa2540724bfbac14d7976d7e4a3860/library/std/src/sys/thread/unix.rs:118:17
[INFO] [stdout]   42:     0x7329cc03baa4 - <unknown>
[INFO] [stdout]   43:     0x7329cc0c8a64 - clone
[INFO] [stdout]   44:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     test_lz77_encode_large_repetitive_is_bounded
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 14 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 4.23s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass `--test lz77`
[INFO] running `Command { std: "docker" "inspect" "5a484e83db5cff7d73ae38648087c4f36c41c2a3ab99ef345bed15eb8964dde3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5a484e83db5cff7d73ae38648087c4f36c41c2a3ab99ef345bed15eb8964dde3", kill_on_drop: false }`
[INFO] [stdout] 5a484e83db5cff7d73ae38648087c4f36c41c2a3ab99ef345bed15eb8964dde3
