[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] 17e23812b02a5b99cfd9079a3ff149c3858b28fd
[INFO] testing SilvioPilato/Hash-Index-KV-Store against try#33835004928d3bf65db4d4712e1330766263b0bd for pr-155739
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSilvioPilato%2FHash-Index-KV-Store" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/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-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/SilvioPilato/Hash-Index-KV-Store on toolchain 33835004928d3bf65db4d4712e1330766263b0bd
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+33835004928d3bf65db4d4712e1330766263b0bd" "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" "+33835004928d3bf65db4d4712e1330766263b0bd" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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" "+33835004928d3bf65db4d4712e1330766263b0bd" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] caf7865f7c1dfcc515e9239eb7e92234cfa2705c983722f012875878ca68a48c
[INFO] running `Command { std: "docker" "start" "-a" "caf7865f7c1dfcc515e9239eb7e92234cfa2705c983722f012875878ca68a48c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "caf7865f7c1dfcc515e9239eb7e92234cfa2705c983722f012875878ca68a48c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "caf7865f7c1dfcc515e9239eb7e92234cfa2705c983722f012875878ca68a48c", kill_on_drop: false }`
[INFO] [stdout] caf7865f7c1dfcc515e9239eb7e92234cfa2705c983722f012875878ca68a48c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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" "+33835004928d3bf65db4d4712e1330766263b0bd" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e7036627597a9fe6704f3f3bbdd3bdc84d355e3e612b6d1c993a7adaebff2fd0
[INFO] running `Command { std: "docker" "start" "-a" "e7036627597a9fe6704f3f3bbdd3bdc84d355e3e612b6d1c993a7adaebff2fd0", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-ident v1.0.24
[INFO] [stderr]    Compiling quote v1.0.45
[INFO] [stderr]    Compiling stable_deref_trait v1.2.1
[INFO] [stderr]    Compiling libc v0.2.186
[INFO] [stderr]    Compiling writeable v0.6.3
[INFO] [stderr]    Compiling smallvec v1.15.1
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[INFO] [stderr]    Compiling icu_properties_data v2.2.0
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[INFO] [stderr]    Compiling parking_lot_core v0.8.6
[INFO] [stderr]    Compiling crossbeam-utils v0.8.21
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling instant v0.1.13
[INFO] [stderr]    Compiling log v0.4.29
[INFO] [stderr]    Compiling crc32fast v1.5.0
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[INFO] [stderr]    Compiling memchr v2.8.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.106
[INFO] [stderr]    Compiling fxhash v0.2.1
[INFO] [stderr]    Compiling itertools v0.13.0
[INFO] [stderr]    Compiling arc-swap v1.9.1
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[INFO] [stderr]    Compiling ryu v1.0.23
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[INFO] [stderr]    Compiling crossbeam-epoch v0.9.18
[INFO] [stderr]    Compiling combine v4.6.7
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[INFO] [stderr]    Compiling socket2 v0.5.10
[INFO] [stderr]    Compiling fs2 v0.4.3
[INFO] [stderr]    Compiling mio v1.2.0
[INFO] [stderr]    Compiling mio-runtime v0.1.0 (https://github.com/SilvioPilato/mio-runtime.git#aaad7cba)
[INFO] [stderr]    Compiling num-bigint v0.4.6
[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
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[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] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 36.74s
[INFO] running `Command { std: "docker" "inspect" "e7036627597a9fe6704f3f3bbdd3bdc84d355e3e612b6d1c993a7adaebff2fd0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e7036627597a9fe6704f3f3bbdd3bdc84d355e3e612b6d1c993a7adaebff2fd0", kill_on_drop: false }`
[INFO] [stdout] e7036627597a9fe6704f3f3bbdd3bdc84d355e3e612b6d1c993a7adaebff2fd0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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" "+33835004928d3bf65db4d4712e1330766263b0bd" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f907cc93d393481673c7af2cb344b6137423ec562f7c574a070d123371f098fb
[INFO] running `Command { std: "docker" "start" "-a" "f907cc93d393481673c7af2cb344b6137423ec562f7c574a070d123371f098fb", kill_on_drop: false }`
[INFO] [stderr]    Compiling rustikv v0.1.0 (/opt/rustwide/workdir)
[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]   --> 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/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/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/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/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/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/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/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/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/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: 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/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/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/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/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/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/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/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/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/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/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/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/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/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] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 4.44s
[INFO] running `Command { std: "docker" "inspect" "f907cc93d393481673c7af2cb344b6137423ec562f7c574a070d123371f098fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f907cc93d393481673c7af2cb344b6137423ec562f7c574a070d123371f098fb", kill_on_drop: false }`
[INFO] [stdout] f907cc93d393481673c7af2cb344b6137423ec562f7c574a070d123371f098fb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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" "+33835004928d3bf65db4d4712e1330766263b0bd" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] e72fc9fa03f561b72b7ef67a1b26bb26447c5c7acd3391f16eeb436d59131c4e
[INFO] running `Command { std: "docker" "start" "-a" "e72fc9fa03f561b72b7ef67a1b26bb26447c5c7acd3391f16eeb436d59131c4e", 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: 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/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 "db") generated 19 warnings (run `cargo fix --test "db" -p rustikv` to apply 19 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 "leveled") generated 26 warnings (run `cargo fix --test "leveled" -p rustikv` to apply 26 suggestions)
[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/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 "lsmengine") generated 36 warnings (run `cargo fix --test "lsmengine" -p rustikv` to apply 36 suggestions)
[INFO] [stderr] warning: `rustikv` (test "worker") generated 2 warnings (run `cargo fix --test "worker" -p rustikv` to apply 2 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.19s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/rustikv-e2a47e99742e82a6)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stderr]      Running unittests src/bin/engbench.rs (/opt/rustwide/target/debug/deps/engbench-2eac5013701bd547)
[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] [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-4a7823aadea4c3a8)
[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-12c18ade523b82f8)
[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-32bfef6426ff7c7b)
[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-a59e45caa00bffdc)
[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-be359b43a393fb4e)
[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-aae926e41a8b8d5b)
[INFO] [stdout] 
[INFO] [stdout] running 19 tests
[INFO] [stdout] test test_block_header_roundtrip_zero ... ok
[INFO] [stdout] test test_block_header_big_endian ... ok
[INFO] [stdout] test test_block_header_serialization ... 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_exceeds_target_size ... ok
[INFO] [stdout] test test_block_roundtrip_uncompressed ... 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_delete_hides_value ... ok
[INFO] [stdout] test test_sstable_get_missing_key ... ok
[INFO] [stdout] test test_sstable_iter_blocks ... ok
[INFO] [stdout] test test_sstable_get_from_blocks ... ok
[INFO] [stdout] test test_lsm_block_missing_key_returns_none ... ok
[INFO] [stdout] test test_sstable_rebuild_index ... ok
[INFO] [stdout] test test_lsm_block_set_get_across_sstable ... ok
[INFO] [stdout] test test_lsm_block_compact_drops_deleted_keys ... ok
[INFO] [stdout] test test_lsm_block_overwrite_reads_latest ... 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 0.05s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/bloom.rs (/opt/rustwide/target/debug/deps/bloom-de29d6756bc6754d)
[INFO] [stdout] 
[INFO] [stdout] running 8 tests
[INFO] [stdout] test different_hash_counts_all_work ... ok
[INFO] [stdout] test empty_filter_returns_false ... ok
[INFO] [stdout] test multiple_inserted_keys_are_found ... ok
[INFO] [stdout] test single_byte_filter_works ... ok
[INFO] [stdout] test inserted_key_is_found ... ok
[INFO] [stdout] test no_false_negatives ... ok
[INFO] [stdout] test missing_key_not_found ... 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 0.02s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/compact_async.rs (/opt/rustwide/target/debug/deps/compact_async-fd3291fe314bc188)
[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 1.41s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/compact_tcp.rs (/opt/rustwide/target/debug/deps/compact_tcp-ca11d677a799c303)
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test write_preserves_leading_and_trailing_spaces_in_value ... ok
[INFO] [stdout] test compact_command_over_tcp ... 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 0.34s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/concurrency.rs (/opt/rustwide/target/debug/deps/concurrency-81028eaac0079d42)
[INFO] [stdout] 
[INFO] [stdout] running 14 tests
[INFO] [stdout] test lsm_concurrent_deletes_and_reads ... 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_compact_during_reads_and_writes ... FAILED
[INFO] [stdout] test kv_concurrent_deletes_and_reads ... ok
[INFO] [stdout] test kv_concurrent_writers ... ok
[INFO] [stdout] test lsm_concurrent_list_keys_during_writes ... ok
[INFO] [stdout] test lsm_concurrent_range_scan_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_reads_and_writes ... ok
[INFO] [stdout] test kv_concurrent_readers ... ok
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- kv_compact_during_reads_and_writes stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread '<unnamed>' (278) panicked at tests/concurrency.rs:265:60:
[INFO] [stdout] called `Result::unwrap()` on an `Err` value: Os { code: 2, kind: NotFound, message: "No such file or directory" }
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x55fa4d11df9a - std[ec419fa8110287d5]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stdout]                                at /rustc/33835004928d3bf65db4d4712e1330766263b0bd/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x55fa4d11df9a - std[ec419fa8110287d5]::backtrace_rs::backtrace::trace_unsynchronized::<std[ec419fa8110287d5]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stdout]                                at /rustc/33835004928d3bf65db4d4712e1330766263b0bd/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x55fa4d11df9a - std[ec419fa8110287d5]::sys::backtrace::_print_fmt
[INFO] [stdout]                                at /rustc/33835004928d3bf65db4d4712e1330766263b0bd/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x55fa4d11df9a - <<std[ec419fa8110287d5]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[35159d6ffb30e017]::fmt::Display>::fmt
[INFO] [stdout]                                at /rustc/33835004928d3bf65db4d4712e1330766263b0bd/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x55fa4d1327da - <core[35159d6ffb30e017]::fmt::rt::Argument>::fmt
[INFO] [stdout]                                at /rustc/33835004928d3bf65db4d4712e1330766263b0bd/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x55fa4d1327da - core[35159d6ffb30e017]::fmt::write
[INFO] [stdout]    6:     0x55fa4d122b02 - std[ec419fa8110287d5]::io::default_write_fmt::<alloc[a8a7aba520129d98]::vec::Vec<u8>>
[INFO] [stdout]                                at /rustc/33835004928d3bf65db4d4712e1330766263b0bd/library/std/src/io/mod.rs:621:11
[INFO] [stdout]    7:     0x55fa4d122b02 - <alloc[a8a7aba520129d98]::vec::Vec<u8> as std[ec419fa8110287d5]::io::Write>::write_fmt
[INFO] [stdout]                                at /rustc/33835004928d3bf65db4d4712e1330766263b0bd/library/std/src/io/mod.rs:1976:13
[INFO] [stdout]    8:     0x55fa4d0fb90f - <std[ec419fa8110287d5]::sys::backtrace::BacktraceLock>::print
[INFO] [stdout]                                at /rustc/33835004928d3bf65db4d4712e1330766263b0bd/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x55fa4d0fb90f - std[ec419fa8110287d5]::panicking::default_hook::{closure#0}
[INFO] [stdout]                                at /rustc/33835004928d3bf65db4d4712e1330766263b0bd/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x55fa4d115f19 - std[ec419fa8110287d5]::panicking::default_hook
[INFO] [stdout]                                at /rustc/33835004928d3bf65db4d4712e1330766263b0bd/library/std/src/panicking.rs:316:9
[INFO] [stdout]   11:     0x55fa4d0432ac - <alloc[a8a7aba520129d98]::boxed::Box<dyn for<'a, 'b> core[35159d6ffb30e017]::ops::function::Fn<(&'a std[ec419fa8110287d5]::panic::PanicHookInfo<'b>,), Output = ()> + core[35159d6ffb30e017]::marker::Sync + core[35159d6ffb30e017]::marker::Send> as core[35159d6ffb30e017]::ops::function::Fn<(&std[ec419fa8110287d5]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/33835004928d3bf65db4d4712e1330766263b0bd/library/alloc/src/boxed.rs:2285:9
[INFO] [stdout]   12:     0x55fa4d0432ac - test[a8007afcd3effadc]::test_main_inner::<test[a8007afcd3effadc]::test_main_static::{closure#0}>::{closure#0}
[INFO] [stdout]                                at /rustc/33835004928d3bf65db4d4712e1330766263b0bd/library/test/src/lib.rs:155:21
[INFO] [stdout]   13:     0x55fa4d1160d2 - <alloc[a8a7aba520129d98]::boxed::Box<dyn for<'a, 'b> core[35159d6ffb30e017]::ops::function::Fn<(&'a std[ec419fa8110287d5]::panic::PanicHookInfo<'b>,), Output = ()> + core[35159d6ffb30e017]::marker::Sync + core[35159d6ffb30e017]::marker::Send> as core[35159d6ffb30e017]::ops::function::Fn<(&std[ec419fa8110287d5]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/33835004928d3bf65db4d4712e1330766263b0bd/library/alloc/src/boxed.rs:2285:9
[INFO] [stdout]   14:     0x55fa4d1160d2 - std[ec419fa8110287d5]::panicking::panic_with_hook
[INFO] [stdout]                                at /rustc/33835004928d3bf65db4d4712e1330766263b0bd/library/std/src/panicking.rs:833:13
[INFO] [stdout]   15:     0x55fa4d0fb9c8 - std[ec419fa8110287d5]::panicking::panic_handler::{closure#0}
[INFO] [stdout]                                at /rustc/33835004928d3bf65db4d4712e1330766263b0bd/library/std/src/panicking.rs:698:13
[INFO] [stdout]   16:     0x55fa4d0f31f9 - std[ec419fa8110287d5]::sys::backtrace::__rust_end_short_backtrace::<std[ec419fa8110287d5]::panicking::panic_handler::{closure#0}, !>
[INFO] [stdout]                                at /rustc/33835004928d3bf65db4d4712e1330766263b0bd/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x55fa4d0fc6dd - __rustc[cfb3622dd870db93]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/33835004928d3bf65db4d4712e1330766263b0bd/library/std/src/panicking.rs:689:5
[INFO] [stdout]   18:     0x55fa4d132f6c - core[35159d6ffb30e017]::panicking::panic_fmt
[INFO] [stdout]                                at /rustc/33835004928d3bf65db4d4712e1330766263b0bd/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x55fa4d132ce2 - core[35159d6ffb30e017]::result::unwrap_failed
[INFO] [stdout]                                at /rustc/33835004928d3bf65db4d4712e1330766263b0bd/library/core/src/result.rs:1867:5
[INFO] [stdout]   20:     0x55fa4d0199e3 - <core[35159d6ffb30e017]::result::Result<core[35159d6ffb30e017]::option::Option<(alloc[a8a7aba520129d98]::string::String, alloc[a8a7aba520129d98]::string::String)>, std[ec419fa8110287d5]::io::error::Error>>::unwrap
[INFO] [stdout]                                at /rustc/33835004928d3bf65db4d4712e1330766263b0bd/library/core/src/result.rs:1233:23
[INFO] [stdout]   21:     0x55fa4d0199e3 - concurrency[9dd4f0e4ca761cc6]::kv_compact_during_reads_and_writes::{closure#0}
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/concurrency.rs:265:60
[INFO] [stdout]   22:     0x55fa4d0297a6 - std[ec419fa8110287d5]::sys::backtrace::__rust_begin_short_backtrace::<concurrency[9dd4f0e4ca761cc6]::kv_compact_during_reads_and_writes::{closure#0}, ()>
[INFO] [stdout]                                at /rustc/33835004928d3bf65db4d4712e1330766263b0bd/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   23:     0x55fa4d01332a - std[ec419fa8110287d5]::thread::lifecycle::spawn_unchecked::<concurrency[9dd4f0e4ca761cc6]::kv_compact_during_reads_and_writes::{closure#0}, ()>::{closure#1}::{closure#0}
[INFO] [stdout]                                at /rustc/33835004928d3bf65db4d4712e1330766263b0bd/library/std/src/thread/lifecycle.rs:70:13
[INFO] [stdout]   24:     0x55fa4d02fbf0 - <core[35159d6ffb30e017]::panic::unwind_safe::AssertUnwindSafe<std[ec419fa8110287d5]::thread::lifecycle::spawn_unchecked<concurrency[9dd4f0e4ca761cc6]::kv_compact_during_reads_and_writes::{closure#0}, ()>::{closure#1}::{closure#0}> as core[35159d6ffb30e017]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/33835004928d3bf65db4d4712e1330766263b0bd/library/core/src/panic/unwind_safe.rs:275:9
[INFO] [stdout]   25:     0x55fa4d02aa8a - std[ec419fa8110287d5]::panicking::catch_unwind::do_call::<core[35159d6ffb30e017]::panic::unwind_safe::AssertUnwindSafe<std[ec419fa8110287d5]::thread::lifecycle::spawn_unchecked<concurrency[9dd4f0e4ca761cc6]::kv_compact_during_reads_and_writes::{closure#0}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/33835004928d3bf65db4d4712e1330766263b0bd/library/std/src/panicking.rs:581:40
[INFO] [stdout]   26:     0x55fa4d014b5b - __rust_try
[INFO] [stdout]   27:     0x55fa4d00f0c5 - std[ec419fa8110287d5]::panicking::catch_unwind::<(), core[35159d6ffb30e017]::panic::unwind_safe::AssertUnwindSafe<std[ec419fa8110287d5]::thread::lifecycle::spawn_unchecked<concurrency[9dd4f0e4ca761cc6]::kv_compact_during_reads_and_writes::{closure#0}, ()>::{closure#1}::{closure#0}>>
[INFO] [stdout]                                at /rustc/33835004928d3bf65db4d4712e1330766263b0bd/library/std/src/panicking.rs:544:19
[INFO] [stdout]   28:     0x55fa4d00f0c5 - std[ec419fa8110287d5]::panic::catch_unwind::<core[35159d6ffb30e017]::panic::unwind_safe::AssertUnwindSafe<std[ec419fa8110287d5]::thread::lifecycle::spawn_unchecked<concurrency[9dd4f0e4ca761cc6]::kv_compact_during_reads_and_writes::{closure#0}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/33835004928d3bf65db4d4712e1330766263b0bd/library/std/src/panic.rs:359:14
[INFO] [stdout]   29:     0x55fa4d00f0c5 - std[ec419fa8110287d5]::thread::lifecycle::spawn_unchecked::<concurrency[9dd4f0e4ca761cc6]::kv_compact_during_reads_and_writes::{closure#0}, ()>::{closure#1}
[INFO] [stdout]                                at /rustc/33835004928d3bf65db4d4712e1330766263b0bd/library/std/src/thread/lifecycle.rs:68:26
[INFO] [stdout]   30:     0x55fa4d033a1e - <std[ec419fa8110287d5]::thread::lifecycle::spawn_unchecked<concurrency[9dd4f0e4ca761cc6]::kv_compact_during_reads_and_writes::{closure#0}, ()>::{closure#1} as core[35159d6ffb30e017]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stdout]                                at /rustc/33835004928d3bf65db4d4712e1330766263b0bd/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   31:     0x55fa4d11d87f - <alloc[a8a7aba520129d98]::boxed::Box<dyn core[35159d6ffb30e017]::ops::function::FnOnce<(), Output = ()> + core[35159d6ffb30e017]::marker::Send> as core[35159d6ffb30e017]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/33835004928d3bf65db4d4712e1330766263b0bd/library/alloc/src/boxed.rs:2271:9
[INFO] [stdout]   32:     0x55fa4d11d87f - <std[ec419fa8110287d5]::sys::thread::unix::Thread>::new::thread_start
[INFO] [stdout]                                at /rustc/33835004928d3bf65db4d4712e1330766263b0bd/library/std/src/sys/thread/unix.rs:118:17
[INFO] [stdout]   33:     0x7f3038482aa4 - <unknown>
[INFO] [stdout]   34:     0x7f303850fa64 - clone
[INFO] [stdout]   35:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] thread 'kv_compact_during_reads_and_writes' (204) panicked at tests/concurrency.rs:307:19:
[INFO] [stdout] called `Result::unwrap()` on an `Err` value: Any { .. }
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x55fa4d11df9a - std[ec419fa8110287d5]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stdout]                                at /rustc/33835004928d3bf65db4d4712e1330766263b0bd/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x55fa4d11df9a - std[ec419fa8110287d5]::backtrace_rs::backtrace::trace_unsynchronized::<std[ec419fa8110287d5]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stdout]                                at /rustc/33835004928d3bf65db4d4712e1330766263b0bd/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x55fa4d11df9a - std[ec419fa8110287d5]::sys::backtrace::_print_fmt
[INFO] [stdout]                                at /rustc/33835004928d3bf65db4d4712e1330766263b0bd/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x55fa4d11df9a - <<std[ec419fa8110287d5]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[35159d6ffb30e017]::fmt::Display>::fmt
[INFO] [stdout]                                at /rustc/33835004928d3bf65db4d4712e1330766263b0bd/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x55fa4d1327da - <core[35159d6ffb30e017]::fmt::rt::Argument>::fmt
[INFO] [stdout]                                at /rustc/33835004928d3bf65db4d4712e1330766263b0bd/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x55fa4d1327da - core[35159d6ffb30e017]::fmt::write
[INFO] [stdout]    6:     0x55fa4d122b02 - std[ec419fa8110287d5]::io::default_write_fmt::<alloc[a8a7aba520129d98]::vec::Vec<u8>>
[INFO] [stdout]                                at /rustc/33835004928d3bf65db4d4712e1330766263b0bd/library/std/src/io/mod.rs:621:11
[INFO] [stdout]    7:     0x55fa4d122b02 - <alloc[a8a7aba520129d98]::vec::Vec<u8> as std[ec419fa8110287d5]::io::Write>::write_fmt
[INFO] [stdout]                                at /rustc/33835004928d3bf65db4d4712e1330766263b0bd/library/std/src/io/mod.rs:1976:13
[INFO] [stdout]    8:     0x55fa4d0fb90f - <std[ec419fa8110287d5]::sys::backtrace::BacktraceLock>::print
[INFO] [stdout]                                at /rustc/33835004928d3bf65db4d4712e1330766263b0bd/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x55fa4d0fb90f - std[ec419fa8110287d5]::panicking::default_hook::{closure#0}
[INFO] [stdout]                                at /rustc/33835004928d3bf65db4d4712e1330766263b0bd/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x55fa4d115f19 - std[ec419fa8110287d5]::panicking::default_hook
[INFO] [stdout]                                at /rustc/33835004928d3bf65db4d4712e1330766263b0bd/library/std/src/panicking.rs:316:9
[INFO] [stdout]   11:     0x55fa4d0432ac - <alloc[a8a7aba520129d98]::boxed::Box<dyn for<'a, 'b> core[35159d6ffb30e017]::ops::function::Fn<(&'a std[ec419fa8110287d5]::panic::PanicHookInfo<'b>,), Output = ()> + core[35159d6ffb30e017]::marker::Sync + core[35159d6ffb30e017]::marker::Send> as core[35159d6ffb30e017]::ops::function::Fn<(&std[ec419fa8110287d5]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/33835004928d3bf65db4d4712e1330766263b0bd/library/alloc/src/boxed.rs:2285:9
[INFO] [stdout]   12:     0x55fa4d0432ac - test[a8007afcd3effadc]::test_main_inner::<test[a8007afcd3effadc]::test_main_static::{closure#0}>::{closure#0}
[INFO] [stdout]                                at /rustc/33835004928d3bf65db4d4712e1330766263b0bd/library/test/src/lib.rs:155:21
[INFO] [stdout]   13:     0x55fa4d1160d2 - <alloc[a8a7aba520129d98]::boxed::Box<dyn for<'a, 'b> core[35159d6ffb30e017]::ops::function::Fn<(&'a std[ec419fa8110287d5]::panic::PanicHookInfo<'b>,), Output = ()> + core[35159d6ffb30e017]::marker::Sync + core[35159d6ffb30e017]::marker::Send> as core[35159d6ffb30e017]::ops::function::Fn<(&std[ec419fa8110287d5]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/33835004928d3bf65db4d4712e1330766263b0bd/library/alloc/src/boxed.rs:2285:9
[INFO] [stdout]   14:     0x55fa4d1160d2 - std[ec419fa8110287d5]::panicking::panic_with_hook
[INFO] [stdout]                                at /rustc/33835004928d3bf65db4d4712e1330766263b0bd/library/std/src/panicking.rs:833:13
[INFO] [stdout]   15:     0x55fa4d0fb9c8 - std[ec419fa8110287d5]::panicking::panic_handler::{closure#0}
[INFO] [stdout]                                at /rustc/33835004928d3bf65db4d4712e1330766263b0bd/library/std/src/panicking.rs:698:13
[INFO] [stdout]   16:     0x55fa4d0f31f9 - std[ec419fa8110287d5]::sys::backtrace::__rust_end_short_backtrace::<std[ec419fa8110287d5]::panicking::panic_handler::{closure#0}, !>
[INFO] [stdout]                                at /rustc/33835004928d3bf65db4d4712e1330766263b0bd/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x55fa4d0fc6dd - __rustc[cfb3622dd870db93]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/33835004928d3bf65db4d4712e1330766263b0bd/library/std/src/panicking.rs:689:5
[INFO] [stdout]   18:     0x55fa4d132f6c - core[35159d6ffb30e017]::panicking::panic_fmt
[INFO] [stdout]                                at /rustc/33835004928d3bf65db4d4712e1330766263b0bd/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x55fa4d132ce2 - core[35159d6ffb30e017]::result::unwrap_failed
[INFO] [stdout]                                at /rustc/33835004928d3bf65db4d4712e1330766263b0bd/library/core/src/result.rs:1867:5
[INFO] [stdout]   20:     0x55fa4d021dde - <core[35159d6ffb30e017]::result::Result<(), alloc[a8a7aba520129d98]::boxed::Box<dyn core[35159d6ffb30e017]::any::Any + core[35159d6ffb30e017]::marker::Send>>>::unwrap
[INFO] [stdout]                                at /rustc/33835004928d3bf65db4d4712e1330766263b0bd/library/core/src/result.rs:1233:23
[INFO] [stdout]   21:     0x55fa4d021dde - concurrency[9dd4f0e4ca761cc6]::kv_compact_during_reads_and_writes
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/concurrency.rs:307:19
[INFO] [stdout]   22:     0x55fa4d017ab7 - concurrency[9dd4f0e4ca761cc6]::kv_compact_during_reads_and_writes::{closure#0}
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/concurrency.rs:245:40
[INFO] [stdout]   23:     0x55fa4d036396 - <concurrency[9dd4f0e4ca761cc6]::kv_compact_during_reads_and_writes::{closure#0} as core[35159d6ffb30e017]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/33835004928d3bf65db4d4712e1330766263b0bd/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x55fa4d03658b - <fn() -> core[35159d6ffb30e017]::result::Result<(), alloc[a8a7aba520129d98]::string::String> as core[35159d6ffb30e017]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/33835004928d3bf65db4d4712e1330766263b0bd/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   25:     0x55fa4d03658b - test[a8007afcd3effadc]::__rust_begin_short_backtrace::<core[35159d6ffb30e017]::result::Result<(), alloc[a8a7aba520129d98]::string::String>, fn() -> core[35159d6ffb30e017]::result::Result<(), alloc[a8a7aba520129d98]::string::String>>
[INFO] [stdout]                                at /rustc/33835004928d3bf65db4d4712e1330766263b0bd/library/test/src/lib.rs:724:18
[INFO] [stdout]   26:     0x55fa4d043d7b - test[a8007afcd3effadc]::run_test_in_process::{closure#0}
[INFO] [stdout]                                at /rustc/33835004928d3bf65db4d4712e1330766263b0bd/library/test/src/lib.rs:747:74
[INFO] [stdout]   27:     0x55fa4d043d7b - <core[35159d6ffb30e017]::panic::unwind_safe::AssertUnwindSafe<test[a8007afcd3effadc]::run_test_in_process::{closure#0}> as core[35159d6ffb30e017]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/33835004928d3bf65db4d4712e1330766263b0bd/library/core/src/panic/unwind_safe.rs:275:9
[INFO] [stdout]   28:     0x55fa4d043d7b - std[ec419fa8110287d5]::panicking::catch_unwind::do_call::<core[35159d6ffb30e017]::panic::unwind_safe::AssertUnwindSafe<test[a8007afcd3effadc]::run_test_in_process::{closure#0}>, core[35159d6ffb30e017]::result::Result<(), alloc[a8a7aba520129d98]::string::String>>
[INFO] [stdout]                                at /rustc/33835004928d3bf65db4d4712e1330766263b0bd/library/std/src/panicking.rs:581:40
[INFO] [stdout]   29:     0x55fa4d043d7b - std[ec419fa8110287d5]::panicking::catch_unwind::<core[35159d6ffb30e017]::result::Result<(), alloc[a8a7aba520129d98]::string::String>, core[35159d6ffb30e017]::panic::unwind_safe::AssertUnwindSafe<test[a8007afcd3effadc]::run_test_in_process::{closure#0}>>
[INFO] [stdout]                                at /rustc/33835004928d3bf65db4d4712e1330766263b0bd/library/std/src/panicking.rs:544:19
[INFO] [stdout]   30:     0x55fa4d043d7b - std[ec419fa8110287d5]::panic::catch_unwind::<core[35159d6ffb30e017]::panic::unwind_safe::AssertUnwindSafe<test[a8007afcd3effadc]::run_test_in_process::{closure#0}>, core[35159d6ffb30e017]::result::Result<(), alloc[a8a7aba520129d98]::string::String>>
[INFO] [stdout]                                at /rustc/33835004928d3bf65db4d4712e1330766263b0bd/library/std/src/panic.rs:359:14
[INFO] [stdout]   31:     0x55fa4d043d7b - test[a8007afcd3effadc]::run_test_in_process
[INFO] [stdout]                                at /rustc/33835004928d3bf65db4d4712e1330766263b0bd/library/test/src/lib.rs:747:27
[INFO] [stdout]   32:     0x55fa4d043d7b - test[a8007afcd3effadc]::run_test::{closure#0}
[INFO] [stdout]                                at /rustc/33835004928d3bf65db4d4712e1330766263b0bd/library/test/src/lib.rs:668:43
[INFO] [stdout]   33:     0x55fa4d03e754 - test[a8007afcd3effadc]::run_test::{closure#1}
[INFO] [stdout]                                at /rustc/33835004928d3bf65db4d4712e1330766263b0bd/library/test/src/lib.rs:698:41
[INFO] [stdout]   34:     0x55fa4d03e754 - std[ec419fa8110287d5]::sys::backtrace::__rust_begin_short_backtrace::<test[a8007afcd3effadc]::run_test::{closure#1}, ()>
[INFO] [stdout]                                at /rustc/33835004928d3bf65db4d4712e1330766263b0bd/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   35:     0x55fa4d046982 - std[ec419fa8110287d5]::thread::lifecycle::spawn_unchecked::<test[a8007afcd3effadc]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}
[INFO] [stdout]                                at /rustc/33835004928d3bf65db4d4712e1330766263b0bd/library/std/src/thread/lifecycle.rs:70:13
[INFO] [stdout]   36:     0x55fa4d046982 - <core[35159d6ffb30e017]::panic::unwind_safe::AssertUnwindSafe<std[ec419fa8110287d5]::thread::lifecycle::spawn_unchecked<test[a8007afcd3effadc]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}> as core[35159d6ffb30e017]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/33835004928d3bf65db4d4712e1330766263b0bd/library/core/src/panic/unwind_safe.rs:275:9
[INFO] [stdout]   37:     0x55fa4d046982 - std[ec419fa8110287d5]::panicking::catch_unwind::do_call::<core[35159d6ffb30e017]::panic::unwind_safe::AssertUnwindSafe<std[ec419fa8110287d5]::thread::lifecycle::spawn_unchecked<test[a8007afcd3effadc]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/33835004928d3bf65db4d4712e1330766263b0bd/library/std/src/panicking.rs:581:40
[INFO] [stdout]   38:     0x55fa4d046982 - std[ec419fa8110287d5]::panicking::catch_unwind::<(), core[35159d6ffb30e017]::panic::unwind_safe::AssertUnwindSafe<std[ec419fa8110287d5]::thread::lifecycle::spawn_unchecked<test[a8007afcd3effadc]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>>
[INFO] [stdout]                                at /rustc/33835004928d3bf65db4d4712e1330766263b0bd/library/std/src/panicking.rs:544:19
[INFO] [stdout]   39:     0x55fa4d046982 - std[ec419fa8110287d5]::panic::catch_unwind::<core[35159d6ffb30e017]::panic::unwind_safe::AssertUnwindSafe<std[ec419fa8110287d5]::thread::lifecycle::spawn_unchecked<test[a8007afcd3effadc]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/33835004928d3bf65db4d4712e1330766263b0bd/library/std/src/panic.rs:359:14
[INFO] [stdout]   40:     0x55fa4d046982 - std[ec419fa8110287d5]::thread::lifecycle::spawn_unchecked::<test[a8007afcd3effadc]::run_test::{closure#1}, ()>::{closure#1}
[INFO] [stdout]                                at /rustc/33835004928d3bf65db4d4712e1330766263b0bd/library/std/src/thread/lifecycle.rs:68:26
[INFO] [stdout]   41:     0x55fa4d046982 - <std[ec419fa8110287d5]::thread::lifecycle::spawn_unchecked<test[a8007afcd3effadc]::run_test::{closure#1}, ()>::{closure#1} as core[35159d6ffb30e017]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stdout]                                at /rustc/33835004928d3bf65db4d4712e1330766263b0bd/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   42:     0x55fa4d11d87f - <alloc[a8a7aba520129d98]::boxed::Box<dyn core[35159d6ffb30e017]::ops::function::FnOnce<(), Output = ()> + core[35159d6ffb30e017]::marker::Send> as core[35159d6ffb30e017]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/33835004928d3bf65db4d4712e1330766263b0bd/library/alloc/src/boxed.rs:2271:9
[INFO] [stdout]   43:     0x55fa4d11d87f - <std[ec419fa8110287d5]::sys::thread::unix::Thread>::new::thread_start
[INFO] [stdout]                                at /rustc/33835004928d3bf65db4d4712e1330766263b0bd/library/std/src/sys/thread/unix.rs:118:17
[INFO] [stdout]   44:     0x7f3038482aa4 - <unknown>
[INFO] [stdout]   45:     0x7f303850fa64 - clone
[INFO] [stdout]   46:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     kv_compact_during_reads_and_writes
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 13 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.99s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass `--test concurrency`
[INFO] running `Command { std: "docker" "inspect" "e72fc9fa03f561b72b7ef67a1b26bb26447c5c7acd3391f16eeb436d59131c4e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e72fc9fa03f561b72b7ef67a1b26bb26447c5c7acd3391f16eeb436d59131c4e", kill_on_drop: false }`
[INFO] [stdout] e72fc9fa03f561b72b7ef67a1b26bb26447c5c7acd3391f16eeb436d59131c4e
