[INFO] cloning repository https://github.com/ShaneM123/kvs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ShaneM123/kvs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FShaneM123%2Fkvs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FShaneM123%2Fkvs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 36186ab3041874c9ae4cf26c5f865605ed7d0ab9
[INFO] testing ShaneM123/kvs against 1.94.0 for beta-1.95-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FShaneM123%2Fkvs" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/ShaneM123/kvs
[INFO] finished tweaking git repo https://github.com/ShaneM123/kvs
[INFO] tweaked toml for git repo https://github.com/ShaneM123/kvs written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/ShaneM123/kvs on toolchain 1.94.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.94.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/ShaneM123/kvs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.94.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.94.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f92f019db496940b58ca937195cb2d4aa8d70d7ff9ec726a82f5578994fc11f0
[INFO] running `Command { std: "docker" "start" "-a" "f92f019db496940b58ca937195cb2d4aa8d70d7ff9ec726a82f5578994fc11f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f92f019db496940b58ca937195cb2d4aa8d70d7ff9ec726a82f5578994fc11f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f92f019db496940b58ca937195cb2d4aa8d70d7ff9ec726a82f5578994fc11f0", kill_on_drop: false }`
[INFO] [stdout] f92f019db496940b58ca937195cb2d4aa8d70d7ff9ec726a82f5578994fc11f0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.94.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 66f2f0c161ee4450676412c318a692cf8c467de63aa5de0f9337211c43c195f9
[INFO] running `Command { std: "docker" "start" "-a" "66f2f0c161ee4450676412c318a692cf8c467de63aa5de0f9337211c43c195f9", kill_on_drop: false }`
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[INFO] [stderr]    Compiling byteorder v1.4.3
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[INFO] [stderr]    Compiling kvs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `File`
[INFO] [stdout]  --> src/lib.rs:7:28
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::fs::{OpenOptions, File};
[INFO] [stdout]   |                            ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `join_paths` and `set_current_dir`
[INFO] [stdout]   --> src/lib.rs:12:16
[INFO] [stdout]    |
[INFO] [stdout] 12 | use std::env::{set_current_dir, join_paths};
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^  ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `prelude::*`
[INFO] [stdout]   --> src/lib.rs:13:15
[INFO] [stdout]    |
[INFO] [stdout] 13 | use std::io::{prelude::*, Seek, SeekFrom};
[INFO] [stdout]    |               ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:239:13
[INFO] [stdout]     |
[INFO] [stdout] 239 |         let mut deserialised: Vec<KvsCommand> = serde_json::from_reader(reader).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: unused variable: `db_file`
[INFO] [stdout]    --> src/lib.rs:269:13
[INFO] [stdout]     |
[INFO] [stdout] 269 |         let db_file = fs::File::create(the_path.clone()).unwrap();
[INFO] [stdout]     |             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_db_file`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `path` is never read
[INFO] [stdout]   --> src/lib.rs:44:5
[INFO] [stdout]    |
[INFO] [stdout] 42 | pub struct SledKvsEngine{
[INFO] [stdout]    |            ------------- field in this struct
[INFO] [stdout] 43 |     pub sled_db: sled::Db,
[INFO] [stdout] 44 |     path: String,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/lib.rs:138:9
[INFO] [stdout]     |
[INFO] [stdout] 138 |         file.read_to_string(&mut buffy);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 138 |         let _ = file.read_to_string(&mut buffy);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/lib.rs:192:9
[INFO] [stdout]     |
[INFO] [stdout] 192 |         file.read_to_string(&mut buffy);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 192 |         let _ = file.read_to_string(&mut buffy);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/lib.rs:267:9
[INFO] [stdout]     |
[INFO] [stdout] 267 |         fs::create_dir_all(&path);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 267 |         let _ = fs::create_dir_all(&path);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Read`
[INFO] [stdout]  --> src/bin/kvs-server.rs:6:15
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::io::{Read, BufReader, BufRead, Error, Write};
[INFO] [stdout]   |               ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io`
[INFO] [stdout]  --> src/bin/kvs-server.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::io;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::borrow::Borrow`
[INFO] [stdout]   --> src/bin/kvs-server.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use std::borrow::Borrow;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Deref`
[INFO] [stdout]   --> src/bin/kvs-server.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use std::ops::Deref;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `AppSettings`, `ArgMatches`, `Arg`, and `SubCommand`
[INFO] [stdout]  --> src/bin/kvs.rs:1:28
[INFO] [stdout]   |
[INFO] [stdout] 1 | use clap::{load_yaml, App, AppSettings, Arg, SubCommand, ArgMatches};
[INFO] [stdout]   |                            ^^^^^^^^^^^  ^^^  ^^^^^^^^^^  ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::path::PathBuf`
[INFO] [stdout]  --> src/bin/kvs.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::path::PathBuf;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::thread::panicking`
[INFO] [stdout]  --> src/bin/kvs.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::thread::panicking;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `anyhow::Error`
[INFO] [stdout]  --> src/bin/kvs.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use anyhow::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `key`
[INFO] [stdout]   --> src/bin/kvs.rs:27:17
[INFO] [stdout]    |
[INFO] [stdout] 27 |             let key = matches.value_of("KEY").expect("KEY argument missing");
[INFO] [stdout]    |                 ^^^ help: if this is intentional, prefix it with an underscore: `_key`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]   --> src/bin/kvs.rs:28:17
[INFO] [stdout]    |
[INFO] [stdout] 28 |             let value = matches.value_of("VALUE").expect("VALUE argument missing");
[INFO] [stdout]    |                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `res`
[INFO] [stdout]   --> src/bin/kvs.rs:32:16
[INFO] [stdout]    |
[INFO] [stdout] 32 |            let res =  match kv_store.remove(key.parse().unwrap())
[INFO] [stdout]    |                ^^^ help: if this is intentional, prefix it with an underscore: `_res`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/kvs-server.rs:66:21
[INFO] [stdout]    |
[INFO] [stdout] 66 |                 let mut store = match engine_func(engine).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: unused variable: `temp_dir`
[INFO] [stdout]   --> src/bin/kvs-server.rs:65:21
[INFO] [stdout]    |
[INFO] [stdout] 65 |                 let temp_dir = std::path::Path::new("tmp/foo2.txt").file_name().unwrap();
[INFO] [stdout]    |                     ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_temp_dir`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `store`
[INFO] [stdout]   --> src/bin/kvs-server.rs:66:21
[INFO] [stdout]    |
[INFO] [stdout] 66 |                 let mut store = match engine_func(engine).unwrap() {
[INFO] [stdout]    |                     ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_store`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/bin/kvs-server.rs:74:29
[INFO] [stdout]    |
[INFO] [stdout] 74 |                         let x =  reader.consume(received.len());
[INFO] [stdout]    |                             ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/bin/kvs-server.rs:77:33
[INFO] [stdout]    |
[INFO] [stdout] 77 | ...                   let x = store.set(deserialized.key.into(), deserialized.value.into()).unwrap();
[INFO] [stdout]    |                           ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/bin/kvs-server.rs:96:33
[INFO] [stdout]    |
[INFO] [stdout] 96 | ...                   let x = match store.remove(deserialized.key.into())
[INFO] [stdout]    |                           ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `store`
[INFO] [stdout]    --> src/bin/kvs-server.rs:114:41
[INFO] [stdout]     |
[INFO] [stdout] 114 |                     EngineType::SledEng(store) => {unimplemented!()}
[INFO] [stdout]     |                                         ^^^^^ help: if this is intentional, prefix it with an underscore: `_store`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/bin/kvs-server.rs:118:17
[INFO] [stdout]     |
[INFO] [stdout] 118 |             Err(e) => {
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ArgMatches`
[INFO] [stdout]  --> src/bin/kvs-client.rs:2:34
[INFO] [stdout]   |
[INFO] [stdout] 2 | use clap::{App, Arg, SubCommand, ArgMatches};
[INFO] [stdout]   |                                  ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Args` and `args`
[INFO] [stdout]  --> src/bin/kvs-client.rs:3:16
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::env::{args, Args};
[INFO] [stdout]   |                ^^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Error as IOError`, `ErrorKind`, and `Read`
[INFO] [stdout]  --> src/bin/kvs-client.rs:5:15
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::io::{Error as IOError, Write, ErrorKind, Read, BufReader, BufRead};
[INFO] [stdout]   |               ^^^^^^^^^^^^^^^^         ^^^^^^^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `serde::Serialize`
[INFO] [stdout]  --> src/bin/kvs-client.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use serde::Serialize;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `GetStream`
[INFO] [stdout]  --> src/bin/kvs-client.rs:7:41
[INFO] [stdout]   |
[INFO] [stdout] 7 | use kvs::shared::messaging::{SetStream, GetStream};
[INFO] [stdout]   |                                         ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `chrono::Duration`
[INFO] [stdout]  --> src/bin/kvs-client.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use chrono::Duration;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `address`
[INFO] [stdout]   --> src/bin/kvs-client.rs:76:9
[INFO] [stdout]    |
[INFO] [stdout] 76 |     let address = match matches.subcommand_matches("set"){
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_address`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `val`
[INFO] [stdout]   --> src/bin/kvs-client.rs:78:14
[INFO] [stdout]    |
[INFO] [stdout] 78 |         Some(val) => {
[INFO] [stdout]    |              ^^^ help: if this is intentional, prefix it with an underscore: `_val`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `key`
[INFO] [stdout]   --> src/bin/kvs-client.rs:81:17
[INFO] [stdout]    |
[INFO] [stdout] 81 |             let key = sub_cmd.value_of("KEY").unwrap();
[INFO] [stdout]    |                 ^^^ help: if this is intentional, prefix it with an underscore: `_key`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]   --> src/bin/kvs-client.rs:87:21
[INFO] [stdout]    |
[INFO] [stdout] 87 |                 Err(e) => {
[INFO] [stdout]    |                     ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/bin/kvs-client.rs:119:21
[INFO] [stdout]     |
[INFO] [stdout] 119 |                 Err(e) => {
[INFO] [stdout]     |                     ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/bin/kvs-client.rs:153:21
[INFO] [stdout]     |
[INFO] [stdout] 153 |                 Err(e) => {
[INFO] [stdout]     |                     ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 46.89s
[INFO] running `Command { std: "docker" "inspect" "66f2f0c161ee4450676412c318a692cf8c467de63aa5de0f9337211c43c195f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "66f2f0c161ee4450676412c318a692cf8c467de63aa5de0f9337211c43c195f9", kill_on_drop: false }`
[INFO] [stdout] 66f2f0c161ee4450676412c318a692cf8c467de63aa5de0f9337211c43c195f9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.94.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ebe90624245c70d59d9944f37e0dd6d900571ef96448162854848bf32f21d76e
[INFO] running `Command { std: "docker" "start" "-a" "ebe90624245c70d59d9944f37e0dd6d900571ef96448162854848bf32f21d76e", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling ucd-trie v0.1.3
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]    Compiling rand_core v0.4.2
[INFO] [stderr]    Compiling getrandom v0.2.2
[INFO] [stderr]    Compiling rayon-core v1.9.0
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling regex-syntax v0.6.22
[INFO] [stderr]    Compiling crossbeam-deque v0.8.0
[INFO] [stdout] warning: unused import: `File`
[INFO] [stdout]  --> src/lib.rs:7:28
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::fs::{OpenOptions, File};
[INFO] [stdout]   |                            ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `join_paths` and `set_current_dir`
[INFO] [stdout]   --> src/lib.rs:12:16
[INFO] [stdout]    |
[INFO] [stdout] 12 | use std::env::{set_current_dir, join_paths};
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^  ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `prelude::*`
[INFO] [stdout]   --> src/lib.rs:13:15
[INFO] [stdout]    |
[INFO] [stdout] 13 | use std::io::{prelude::*, Seek, SeekFrom};
[INFO] [stdout]    |               ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:239:13
[INFO] [stdout]     |
[INFO] [stdout] 239 |         let mut deserialised: Vec<KvsCommand> = serde_json::from_reader(reader).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: unused variable: `db_file`
[INFO] [stdout]    --> src/lib.rs:269:13
[INFO] [stdout]     |
[INFO] [stdout] 269 |         let db_file = fs::File::create(the_path.clone()).unwrap();
[INFO] [stdout]     |             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_db_file`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `path` is never read
[INFO] [stdout]   --> src/lib.rs:44:5
[INFO] [stdout]    |
[INFO] [stdout] 42 | pub struct SledKvsEngine{
[INFO] [stdout]    |            ------------- field in this struct
[INFO] [stdout] 43 |     pub sled_db: sled::Db,
[INFO] [stdout] 44 |     path: String,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/lib.rs:138:9
[INFO] [stdout]     |
[INFO] [stdout] 138 |         file.read_to_string(&mut buffy);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 138 |         let _ = file.read_to_string(&mut buffy);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/lib.rs:192:9
[INFO] [stdout]     |
[INFO] [stdout] 192 |         file.read_to_string(&mut buffy);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 192 |         let _ = file.read_to_string(&mut buffy);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/lib.rs:267:9
[INFO] [stdout]     |
[INFO] [stdout] 267 |         fs::create_dir_all(&path);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 267 |         let _ = fs::create_dir_all(&path);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling regex-automata v0.1.9
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling pest v2.1.3
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]    Compiling aho-corasick v0.7.15
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_core v0.6.2
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rayon v1.5.0
[INFO] [stderr]    Compiling predicates-core v1.0.1
[INFO] [stderr]    Compiling plotters-backend v0.3.0
[INFO] [stderr]    Compiling doc-comment v0.3.3
[INFO] [stderr]    Compiling ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling plotters-svg v0.3.0
[INFO] [stderr]    Compiling bstr v0.2.15
[INFO] [stderr]    Compiling rand_chacha v0.3.0
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling csv-core v0.1.10
[INFO] [stderr]    Compiling itertools v0.9.0
[INFO] [stderr]    Compiling float-cmp v0.8.0
[INFO] [stderr]    Compiling semver-parser v0.10.2
[INFO] [stderr]    Compiling half v1.7.1
[INFO] [stderr]    Compiling treeline v0.1.0
[INFO] [stderr]    Compiling same-file v1.0.6
[INFO] [stderr]    Compiling difference v2.0.0
[INFO] [stderr]    Compiling normalize-line-endings v0.3.0
[INFO] [stderr]    Compiling predicates-tree v1.0.1
[INFO] [stderr]    Compiling semver v0.11.0
[INFO] [stderr]    Compiling walkdir v2.3.1
[INFO] [stderr]    Compiling regex v1.4.3
[INFO] [stderr]    Compiling csv v1.1.6
[INFO] [stderr]    Compiling rustc_version v0.3.3
[INFO] [stderr]    Compiling serde_cbor v0.11.1
[INFO] [stderr]    Compiling rand v0.8.3
[INFO] [stderr]    Compiling cast v0.2.6
[INFO] [stderr]    Compiling criterion-plot v0.4.3
[INFO] [stderr]    Compiling plotters v0.3.1
[INFO] [stderr]    Compiling rand_hc v0.1.0
[INFO] [stderr]    Compiling rand_isaac v0.1.1
[INFO] [stderr]    Compiling rand_xorshift v0.1.1
[INFO] [stderr]    Compiling rand_jitter v0.1.4
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling itertools v0.10.1
[INFO] [stderr]    Compiling tinytemplate v1.2.1
[INFO] [stderr]    Compiling wait-timeout v0.2.0
[INFO] [stderr]    Compiling oorandom v11.1.3
[INFO] [stderr]    Compiling predicates v1.0.6
[INFO] [stderr]    Compiling remove_dir_all v0.5.3
[INFO] [stderr]    Compiling tempfile v3.2.0
[INFO] [stdout] warning: unused import: `ArgMatches`
[INFO] [stdout]  --> src/bin/kvs-client.rs:2:34
[INFO] [stdout]   |
[INFO] [stdout] 2 | use clap::{App, Arg, SubCommand, ArgMatches};
[INFO] [stdout]   |                                  ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Args` and `args`
[INFO] [stdout]  --> src/bin/kvs-client.rs:3:16
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::env::{args, Args};
[INFO] [stdout]   |                ^^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Error as IOError`, `ErrorKind`, and `Read`
[INFO] [stdout]  --> src/bin/kvs-client.rs:5:15
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::io::{Error as IOError, Write, ErrorKind, Read, BufReader, BufRead};
[INFO] [stdout]   |               ^^^^^^^^^^^^^^^^         ^^^^^^^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `serde::Serialize`
[INFO] [stdout]  --> src/bin/kvs-client.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use serde::Serialize;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `GetStream`
[INFO] [stdout]  --> src/bin/kvs-client.rs:7:41
[INFO] [stdout]   |
[INFO] [stdout] 7 | use kvs::shared::messaging::{SetStream, GetStream};
[INFO] [stdout]   |                                         ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `chrono::Duration`
[INFO] [stdout]  --> src/bin/kvs-client.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use chrono::Duration;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `address`
[INFO] [stdout]   --> src/bin/kvs-client.rs:76:9
[INFO] [stdout]    |
[INFO] [stdout] 76 |     let address = match matches.subcommand_matches("set"){
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_address`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `val`
[INFO] [stdout]   --> src/bin/kvs-client.rs:78:14
[INFO] [stdout]    |
[INFO] [stdout] 78 |         Some(val) => {
[INFO] [stdout]    |              ^^^ help: if this is intentional, prefix it with an underscore: `_val`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `key`
[INFO] [stdout]   --> src/bin/kvs-client.rs:81:17
[INFO] [stdout]    |
[INFO] [stdout] 81 |             let key = sub_cmd.value_of("KEY").unwrap();
[INFO] [stdout]    |                 ^^^ help: if this is intentional, prefix it with an underscore: `_key`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]   --> src/bin/kvs-client.rs:87:21
[INFO] [stdout]    |
[INFO] [stdout] 87 |                 Err(e) => {
[INFO] [stdout]    |                     ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/bin/kvs-client.rs:119:21
[INFO] [stdout]     |
[INFO] [stdout] 119 |                 Err(e) => {
[INFO] [stdout]     |                     ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/bin/kvs-client.rs:153:21
[INFO] [stdout]     |
[INFO] [stdout] 153 |                 Err(e) => {
[INFO] [stdout]     |                     ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `AppSettings`, `ArgMatches`, `Arg`, and `SubCommand`
[INFO] [stdout]  --> src/bin/kvs.rs:1:28
[INFO] [stdout]   |
[INFO] [stdout] 1 | use clap::{load_yaml, App, AppSettings, Arg, SubCommand, ArgMatches};
[INFO] [stdout]   |                            ^^^^^^^^^^^  ^^^  ^^^^^^^^^^  ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::path::PathBuf`
[INFO] [stdout]  --> src/bin/kvs.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::path::PathBuf;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::thread::panicking`
[INFO] [stdout]  --> src/bin/kvs.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::thread::panicking;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `anyhow::Error`
[INFO] [stdout]  --> src/bin/kvs.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use anyhow::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `key`
[INFO] [stdout]   --> src/bin/kvs.rs:27:17
[INFO] [stdout]    |
[INFO] [stdout] 27 |             let key = matches.value_of("KEY").expect("KEY argument missing");
[INFO] [stdout]    |                 ^^^ help: if this is intentional, prefix it with an underscore: `_key`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]   --> src/bin/kvs.rs:28:17
[INFO] [stdout]    |
[INFO] [stdout] 28 |             let value = matches.value_of("VALUE").expect("VALUE argument missing");
[INFO] [stdout]    |                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `res`
[INFO] [stdout]   --> src/bin/kvs.rs:32:16
[INFO] [stdout]    |
[INFO] [stdout] 32 |            let res =  match kv_store.remove(key.parse().unwrap())
[INFO] [stdout]    |                ^^^ help: if this is intentional, prefix it with an underscore: `_res`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Read`
[INFO] [stdout]  --> src/bin/kvs-server.rs:6:15
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::io::{Read, BufReader, BufRead, Error, Write};
[INFO] [stdout]   |               ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io`
[INFO] [stdout]  --> src/bin/kvs-server.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::io;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::borrow::Borrow`
[INFO] [stdout]   --> src/bin/kvs-server.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use std::borrow::Borrow;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Deref`
[INFO] [stdout]   --> src/bin/kvs-server.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use std::ops::Deref;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/kvs-server.rs:66:21
[INFO] [stdout]    |
[INFO] [stdout] 66 |                 let mut store = match engine_func(engine).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: unused variable: `temp_dir`
[INFO] [stdout]   --> src/bin/kvs-server.rs:65:21
[INFO] [stdout]    |
[INFO] [stdout] 65 |                 let temp_dir = std::path::Path::new("tmp/foo2.txt").file_name().unwrap();
[INFO] [stdout]    |                     ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_temp_dir`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `store`
[INFO] [stdout]   --> src/bin/kvs-server.rs:66:21
[INFO] [stdout]    |
[INFO] [stdout] 66 |                 let mut store = match engine_func(engine).unwrap() {
[INFO] [stdout]    |                     ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_store`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/bin/kvs-server.rs:74:29
[INFO] [stdout]    |
[INFO] [stdout] 74 |                         let x =  reader.consume(received.len());
[INFO] [stdout]    |                             ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/bin/kvs-server.rs:77:33
[INFO] [stdout]    |
[INFO] [stdout] 77 | ...                   let x = store.set(deserialized.key.into(), deserialized.value.into()).unwrap();
[INFO] [stdout]    |                           ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/bin/kvs-server.rs:96:33
[INFO] [stdout]    |
[INFO] [stdout] 96 | ...                   let x = match store.remove(deserialized.key.into())
[INFO] [stdout]    |                           ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `store`
[INFO] [stdout]    --> src/bin/kvs-server.rs:114:41
[INFO] [stdout]     |
[INFO] [stdout] 114 |                     EngineType::SledEng(store) => {unimplemented!()}
[INFO] [stdout]     |                                         ^^^^^ help: if this is intentional, prefix it with an underscore: `_store`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/bin/kvs-server.rs:118:17
[INFO] [stdout]     |
[INFO] [stdout] 118 |             Err(e) => {
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling assert_cmd v1.0.2
[INFO] [stderr]    Compiling criterion v0.3.4
[INFO] [stderr]    Compiling kvs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `ArgMatches`
[INFO] [stdout]  --> src/bin/kvs-client.rs:2:34
[INFO] [stdout]   |
[INFO] [stdout] 2 | use clap::{App, Arg, SubCommand, ArgMatches};
[INFO] [stdout]   |                                  ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Args` and `args`
[INFO] [stdout]  --> src/bin/kvs-client.rs:3:16
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::env::{args, Args};
[INFO] [stdout]   |                ^^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Error as IOError`, `ErrorKind`, and `Read`
[INFO] [stdout]  --> src/bin/kvs-client.rs:5:15
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::io::{Error as IOError, Write, ErrorKind, Read, BufReader, BufRead};
[INFO] [stdout]   |               ^^^^^^^^^^^^^^^^         ^^^^^^^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `serde::Serialize`
[INFO] [stdout]  --> src/bin/kvs-client.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use serde::Serialize;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `GetStream`
[INFO] [stdout]  --> src/bin/kvs-client.rs:7:41
[INFO] [stdout]   |
[INFO] [stdout] 7 | use kvs::shared::messaging::{SetStream, GetStream};
[INFO] [stdout]   |                                         ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `chrono::Duration`
[INFO] [stdout]  --> src/bin/kvs-client.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use chrono::Duration;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> tests/kv_store.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |     let mut store = KvStore::open(temp_dir.path())?;
[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/kv_store.rs:58:9
[INFO] [stdout]    |
[INFO] [stdout] 58 |     let mut store = KvStore::open(temp_dir.path())?;
[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/kv_store.rs:117:13
[INFO] [stdout]     |
[INFO] [stdout] 117 |         let mut store = KvStore::open(temp_dir.path())?;
[INFO] [stdout]     |             ----^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `address`
[INFO] [stdout]   --> src/bin/kvs-client.rs:76:9
[INFO] [stdout]    |
[INFO] [stdout] 76 |     let address = match matches.subcommand_matches("set"){
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_address`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `val`
[INFO] [stdout]   --> src/bin/kvs-client.rs:78:14
[INFO] [stdout]    |
[INFO] [stdout] 78 |         Some(val) => {
[INFO] [stdout]    |              ^^^ help: if this is intentional, prefix it with an underscore: `_val`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `key`
[INFO] [stdout]   --> src/bin/kvs-client.rs:81:17
[INFO] [stdout]    |
[INFO] [stdout] 81 |             let key = sub_cmd.value_of("KEY").unwrap();
[INFO] [stdout]    |                 ^^^ help: if this is intentional, prefix it with an underscore: `_key`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]   --> src/bin/kvs-client.rs:87:21
[INFO] [stdout]    |
[INFO] [stdout] 87 |                 Err(e) => {
[INFO] [stdout]    |                     ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/bin/kvs-client.rs:119:21
[INFO] [stdout]     |
[INFO] [stdout] 119 |                 Err(e) => {
[INFO] [stdout]     |                     ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/bin/kvs-client.rs:153:21
[INFO] [stdout]     |
[INFO] [stdout] 153 |                 Err(e) => {
[INFO] [stdout]     |                     ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 41.74s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: criterion v0.3.4
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "ebe90624245c70d59d9944f37e0dd6d900571ef96448162854848bf32f21d76e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ebe90624245c70d59d9944f37e0dd6d900571ef96448162854848bf32f21d76e", kill_on_drop: false }`
[INFO] [stdout] ebe90624245c70d59d9944f37e0dd6d900571ef96448162854848bf32f21d76e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.94.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 948f0a03f663da325ae5790eb2037efd3dc5b6fb6901064930813b2f461d94c7
[INFO] running `Command { std: "docker" "start" "-a" "948f0a03f663da325ae5790eb2037efd3dc5b6fb6901064930813b2f461d94c7", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `File`
[INFO] [stderr]  --> src/lib.rs:7:28
[INFO] [stderr]   |
[INFO] [stderr] 7 | use std::fs::{OpenOptions, File};
[INFO] [stderr]   |                            ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `join_paths` and `set_current_dir`
[INFO] [stderr]   --> src/lib.rs:12:16
[INFO] [stderr]    |
[INFO] [stderr] 12 | use std::env::{set_current_dir, join_paths};
[INFO] [stderr]    |                ^^^^^^^^^^^^^^^  ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `prelude::*`
[INFO] [stderr]   --> src/lib.rs:13:15
[INFO] [stderr]    |
[INFO] [stderr] 13 | use std::io::{prelude::*, Seek, SeekFrom};
[INFO] [stderr]    |               ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:239:13
[INFO] [stderr]     |
[INFO] [stderr] 239 |         let mut deserialised: Vec<KvsCommand> = serde_json::from_reader(reader).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: unused variable: `db_file`
[INFO] [stderr]    --> src/lib.rs:269:13
[INFO] [stderr]     |
[INFO] [stderr] 269 |         let db_file = fs::File::create(the_path.clone()).unwrap();
[INFO] [stderr]     |             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_db_file`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field `path` is never read
[INFO] [stderr]   --> src/lib.rs:44:5
[INFO] [stderr]    |
[INFO] [stderr] 42 | pub struct SledKvsEngine{
[INFO] [stderr]    |            ------------- field in this struct
[INFO] [stderr] 43 |     pub sled_db: sled::Db,
[INFO] [stderr] 44 |     path: String,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/lib.rs:138:9
[INFO] [stderr]     |
[INFO] [stderr] 138 |         file.read_to_string(&mut buffy);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 138 |         let _ = file.read_to_string(&mut buffy);
[INFO] [stderr]     |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/lib.rs:192:9
[INFO] [stderr]     |
[INFO] [stderr] 192 |         file.read_to_string(&mut buffy);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 192 |         let _ = file.read_to_string(&mut buffy);
[INFO] [stderr]     |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/lib.rs:267:9
[INFO] [stderr]     |
[INFO] [stderr] 267 |         fs::create_dir_all(&path);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 267 |         let _ = fs::create_dir_all(&path);
[INFO] [stderr]     |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: `kvs` (lib) generated 9 warnings (run `cargo fix --lib -p kvs` to apply 5 suggestions)
[INFO] [stderr] warning: unused import: `ArgMatches`
[INFO] [stderr]  --> src/bin/kvs-client.rs:2:34
[INFO] [stderr]   |
[INFO] [stderr] 2 | use clap::{App, Arg, SubCommand, ArgMatches};
[INFO] [stderr]   |                                  ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Args` and `args`
[INFO] [stderr]  --> src/bin/kvs-client.rs:3:16
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::env::{args, Args};
[INFO] [stderr]   |                ^^^^  ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Error as IOError`, `ErrorKind`, and `Read`
[INFO] [stderr]  --> src/bin/kvs-client.rs:5:15
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::io::{Error as IOError, Write, ErrorKind, Read, BufReader, BufRead};
[INFO] [stderr]   |               ^^^^^^^^^^^^^^^^         ^^^^^^^^^  ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `serde::Serialize`
[INFO] [stderr]  --> src/bin/kvs-client.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use serde::Serialize;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `GetStream`
[INFO] [stderr]  --> src/bin/kvs-client.rs:7:41
[INFO] [stderr]   |
[INFO] [stderr] 7 | use kvs::shared::messaging::{SetStream, GetStream};
[INFO] [stderr]   |                                         ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `chrono::Duration`
[INFO] [stderr]  --> src/bin/kvs-client.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use chrono::Duration;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `address`
[INFO] [stderr]   --> src/bin/kvs-client.rs:76:9
[INFO] [stderr]    |
[INFO] [stderr] 76 |     let address = match matches.subcommand_matches("set"){
[INFO] [stderr]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_address`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `val`
[INFO] [stderr]   --> src/bin/kvs-client.rs:78:14
[INFO] [stderr]    |
[INFO] [stderr] 78 |         Some(val) => {
[INFO] [stderr]    |              ^^^ help: if this is intentional, prefix it with an underscore: `_val`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `key`
[INFO] [stderr]   --> src/bin/kvs-client.rs:81:17
[INFO] [stderr]    |
[INFO] [stderr] 81 |             let key = sub_cmd.value_of("KEY").unwrap();
[INFO] [stderr]    |                 ^^^ help: if this is intentional, prefix it with an underscore: `_key`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `e`
[INFO] [stderr]   --> src/bin/kvs-client.rs:87:21
[INFO] [stderr]    |
[INFO] [stderr] 87 |                 Err(e) => {
[INFO] [stderr]    |                     ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `e`
[INFO] [stderr]    --> src/bin/kvs-client.rs:119:21
[INFO] [stderr]     |
[INFO] [stderr] 119 |                 Err(e) => {
[INFO] [stderr]     |                     ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `e`
[INFO] [stderr]    --> src/bin/kvs-client.rs:153:21
[INFO] [stderr]     |
[INFO] [stderr] 153 |                 Err(e) => {
[INFO] [stderr]     |                     ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `AppSettings`, `ArgMatches`, `Arg`, and `SubCommand`
[INFO] [stderr]  --> src/bin/kvs.rs:1:28
[INFO] [stderr]   |
[INFO] [stderr] 1 | use clap::{load_yaml, App, AppSettings, Arg, SubCommand, ArgMatches};
[INFO] [stderr]   |                            ^^^^^^^^^^^  ^^^  ^^^^^^^^^^  ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::path::PathBuf`
[INFO] [stderr]  --> src/bin/kvs.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::path::PathBuf;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::thread::panicking`
[INFO] [stderr]  --> src/bin/kvs.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::thread::panicking;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `anyhow::Error`
[INFO] [stderr]  --> src/bin/kvs.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use anyhow::Error;
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `key`
[INFO] [stderr]   --> src/bin/kvs.rs:27:17
[INFO] [stderr]    |
[INFO] [stderr] 27 |             let key = matches.value_of("KEY").expect("KEY argument missing");
[INFO] [stderr]    |                 ^^^ help: if this is intentional, prefix it with an underscore: `_key`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]   --> src/bin/kvs.rs:28:17
[INFO] [stderr]    |
[INFO] [stderr] 28 |             let value = matches.value_of("VALUE").expect("VALUE argument missing");
[INFO] [stderr]    |                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `res`
[INFO] [stderr]   --> src/bin/kvs.rs:32:16
[INFO] [stderr]    |
[INFO] [stderr] 32 |            let res =  match kv_store.remove(key.parse().unwrap())
[INFO] [stderr]    |                ^^^ help: if this is intentional, prefix it with an underscore: `_res`
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Read`
[INFO] [stderr]  --> src/bin/kvs-server.rs:6:15
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::io::{Read, BufReader, BufRead, Error, Write};
[INFO] [stderr]   |               ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io`
[INFO] [stderr]  --> src/bin/kvs-server.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use std::io;
[INFO] [stderr]   |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::borrow::Borrow`
[INFO] [stderr]   --> src/bin/kvs-server.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 | use std::borrow::Borrow;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::ops::Deref`
[INFO] [stderr]   --> src/bin/kvs-server.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 | use std::ops::Deref;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/bin/kvs-server.rs:66:21
[INFO] [stderr]    |
[INFO] [stderr] 66 |                 let mut store = match engine_func(engine).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: unused variable: `temp_dir`
[INFO] [stderr]   --> src/bin/kvs-server.rs:65:21
[INFO] [stderr]    |
[INFO] [stderr] 65 |                 let temp_dir = std::path::Path::new("tmp/foo2.txt").file_name().unwrap();
[INFO] [stderr]    |                     ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_temp_dir`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `store`
[INFO] [stderr]   --> src/bin/kvs-server.rs:66:21
[INFO] [stderr]    |
[INFO] [stderr] 66 |                 let mut store = match engine_func(engine).unwrap() {
[INFO] [stderr]    |                     ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_store`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> src/bin/kvs-server.rs:74:29
[INFO] [stderr]    |
[INFO] [stderr] 74 |                         let x =  reader.consume(received.len());
[INFO] [stderr]    |                             ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> src/bin/kvs-server.rs:77:33
[INFO] [stderr]    |
[INFO] [stderr] 77 | ...                   let x = store.set(deserialized.key.into(), deserialized.value.into()).unwrap();
[INFO] [stderr]    |                           ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> src/bin/kvs-server.rs:96:33
[INFO] [stderr]    |
[INFO] [stderr] 96 | ...                   let x = match store.remove(deserialized.key.into())
[INFO] [stderr]    |                           ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `store`
[INFO] [stderr]    --> src/bin/kvs-server.rs:114:41
[INFO] [stderr]     |
[INFO] [stderr] 114 |                     EngineType::SledEng(store) => {unimplemented!()}
[INFO] [stderr]     |                                         ^^^^^ help: if this is intentional, prefix it with an underscore: `_store`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `e`
[INFO] [stderr]    --> src/bin/kvs-server.rs:118:17
[INFO] [stderr]     |
[INFO] [stderr] 118 |             Err(e) => {
[INFO] [stderr]     |                 ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stderr] 
[INFO] [stderr] warning: `kvs` (bin "kvs-client") generated 12 warnings (run `cargo fix --bin "kvs-client" -p kvs` to apply 12 suggestions)
[INFO] [stderr] warning: `kvs` (bin "kvs") generated 7 warnings (run `cargo fix --bin "kvs" -p kvs` to apply 7 suggestions)
[INFO] [stderr] warning: `kvs` (bin "kvs-server") generated 12 warnings (run `cargo fix --bin "kvs-server" -p kvs` to apply 12 suggestions)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> tests/kv_store.rs:19:9
[INFO] [stderr]    |
[INFO] [stderr] 19 |     let mut store = KvStore::open(temp_dir.path())?;
[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/kv_store.rs:58:9
[INFO] [stderr]    |
[INFO] [stderr] 58 |     let mut store = KvStore::open(temp_dir.path())?;
[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/kv_store.rs:117:13
[INFO] [stderr]     |
[INFO] [stderr] 117 |         let mut store = KvStore::open(temp_dir.path())?;
[INFO] [stderr]     |             ----^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: `kvs` (bin "kvs-client" test) generated 12 warnings (12 duplicates)
[INFO] [stderr] warning: `kvs` (test "kv_store") generated 3 warnings (run `cargo fix --test "kv_store" -p kvs` to apply 3 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.38s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: criterion v0.3.4
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] [stderr]      Running unittests src/bin/kvs-client.rs (/opt/rustwide/target/debug/deps/kvs_client-62896685d7713d2b)
[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/cli.rs (/opt/rustwide/target/debug/deps/cli-e54e5fed6cbe6f28)
[INFO] [stdout] 
[INFO] [stdout] running 11 tests
[INFO] [stderr] version: 0.1.0
[INFO] [stdout] test client_cli_invalid_subcommand ... ok
[INFO] [stderr]  version: 0.1.0
[INFO] [stderr]  Mar 09 18:01:12.028 INFO Application started, started_at: 2026-03-09 18:01:12.026778071 UTC
[INFO] [stderr]  Mar 09 18:01:12.029 INFO App Ended, address: 127.0.0.1:4005, Engine: sled, version: 0.1.0
[INFO] [stderr] Mar 09 18:01:12.028 INFO Application started, started_at: 2026-03-09 18:01:12.027623631 UTC
[INFO] [stderr]  Mar 09 18:01:12.029 INFO App Ended, address: 127.0.0.1:4002, Engine: sled, version: 0.1.0
[INFO] [stderr] version: 0.1.0
[INFO] [stderr]  Mar 09 18:01:12.029 INFO Application started, started_at: 2026-03-09 18:01:12.028514911 UTC
[INFO] [stderr]  Mar 09 18:01:12.029 INFO App Ended, address: 127.0.0.1:4004, Engine: kvs, version: 0.1.0
[INFO] [stdout] test client_cli_no_args ... ok
[INFO] [stdout] test client_cli_invalid_set ... ok
[INFO] [stdout] test client_cli_invalid_rm ... ok
[INFO] [stdout] test client_cli_invalid_get ... ok
[INFO] [stdout] test server_cli_version ... ok
[INFO] [stdout] test client_cli_version ... ok
[INFO] [stdout] test cli_log_configuration ... ok
[INFO] [stderr] version: 0.1.0
[INFO] [stderr]  Mar 09 18:01:13.095 INFO Application started, started_at: 2026-03-09 18:01:13.090614721 UTC
[INFO] [stderr]  Mar 09 18:01:13.095 INFO App Ended, address: 127.0.0.1:4004, Engine: kvs, version: 0.1.0
[INFO] [stderr] 
[INFO] [stderr] thread 'main' (27) panicked at src/bin/kvs-server.rs:114:52:
[INFO] [stderr] not implemented
[INFO] [stderr] stack backtrace:
[INFO] [stderr]    0:     0x591614acc0f2 - std::backtrace_rs::backtrace::libunwind::trace::hff358a60abf734fc
[INFO] [stderr]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stderr]    1:     0x591614acc0f2 - std::backtrace_rs::backtrace::trace_unsynchronized::h3b121f916dd95ec6
[INFO] [stderr]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stderr]    2:     0x591614acc0f2 - std::sys::backtrace::_print_fmt::hde0a62ded68798e9
[INFO] [stderr]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/std/src/sys/backtrace.rs:74:9
[INFO] [stderr]    3:     0x591614acc0f2 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::h93773fc827e3113d
[INFO] [stderr]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/std/src/sys/backtrace.rs:44:26
[INFO] [stderr]    4:     0x591614addf3a - core::fmt::rt::Argument::fmt::h01eff69902dad97f
[INFO] [stderr]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/core/src/fmt/rt.rs:152:76
[INFO] [stderr]    5:     0x591614addf3a - core::fmt::write::hed7b5c73d82ecb7c
[INFO] [stderr]    6:     0x591614aa25d6 - std::io::default_write_fmt::hd49a3027caaa0994
[INFO] [stderr]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/std/src/io/mod.rs:639:11
[INFO] [stderr]    7:     0x591614aa25d6 - std::io::Write::write_fmt::h6f0185aecf0ed75f
[INFO] [stderr]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/std/src/io/mod.rs:1994:13
[INFO] [stderr]    8:     0x591614aae0b9 - std::sys::backtrace::BacktraceLock::print::h8b1d6fcc5a56d1a3
[INFO] [stderr]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/std/src/sys/backtrace.rs:47:9
[INFO] [stderr]    9:     0x591614aae0b9 - std::panicking::default_hook::{{closure}}::h2be84df4f189ae36
[INFO] [stderr]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/std/src/panicking.rs:292:27
[INFO] [stderr]   10:     0x591614aadf19 - std::panicking::default_hook::hf0ea8939246f43a9
[INFO] [stderr]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/std/src/panicking.rs:319:9
[INFO] [stderr]   11:     0x591614aae2fb - std::panicking::panic_with_hook::hb4bd9ac1123582a0
[INFO] [stderr]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/std/src/panicking.rs:825:13
[INFO] [stderr]   12:     0x591614aae1aa - std::panicking::panic_handler::{{closure}}::hde00dd15f5637fe2
[INFO] [stderr]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/std/src/panicking.rs:691:13
[INFO] [stderr]   13:     0x591614aaaf49 - std::sys::backtrace::__rust_end_short_backtrace::hb72197fa777c1785
[INFO] [stderr]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/std/src/sys/backtrace.rs:182:18
[INFO] [stderr]   14:     0x591614a964ad - __rustc[4425a7e20b4c8619]::rust_begin_unwind
[INFO] [stderr]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/std/src/panicking.rs:689:5
[INFO] [stderr]   15:     0x591614ae855c - core::panicking::panic_fmt::ha59b517dd231f4da
[INFO] [stderr]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/core/src/panicking.rs:80:14
[INFO] [stderr]   16:     0x591614ae8522 - core::panicking::panic::hbff2745fd4c5afec
[INFO] [stderr]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/core/src/panicking.rs:150:5
[INFO] [stderr]   17:     0x5916147a688b - kvs_server::main::h0fa6a797be4b2d05
[INFO] [stderr]                                at /opt/rustwide/workdir/src/bin/kvs-server.rs:114:52
[INFO] [stderr]   18:     0x59161479c4fb - core::ops::function::FnOnce::call_once::h602dc8047b466459
[INFO] [stderr]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/core/src/ops/function.rs:250:5
[INFO] [stderr]   19:     0x5916147b14be - std::sys::backtrace::__rust_begin_short_backtrace::h815a36093084e0c0
[INFO] [stderr]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/std/src/sys/backtrace.rs:166:18
[INFO] [stderr]   20:     0x5916147a1481 - std::rt::lang_start::{{closure}}::hcd7d6964dc9948b9
[INFO] [stderr]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/std/src/rt.rs:206:18
[INFO] [stderr]   21:     0x591614aa3f86 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h6cf6e1b4b1f98539
[INFO] [stderr]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/core/src/ops/function.rs:287:21
[INFO] [stderr]   22:     0x591614aa3f86 - std::panicking::catch_unwind::do_call::h174840425564edbd
[INFO] [stderr]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/std/src/panicking.rs:581:40
[INFO] [stderr]   23:     0x591614aa3f86 - std::panicking::catch_unwind::had0fde8b5d7282ba
[INFO] [stderr]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/std/src/panicking.rs:544:19
[INFO] [stderr]   24:     0x591614aa3f86 - std::panic::catch_unwind::hdb1c6876cc6d1988
[INFO] [stderr]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/std/src/panic.rs:359:14
[INFO] [stderr]   25:     0x591614aa3f86 - std::rt::lang_start_internal::{{closure}}::h9a3342d69e945811
[INFO] [stderr]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/std/src/rt.rs:175:24
[INFO] [stderr]   26:     0x591614aa3f86 - std::panicking::catch_unwind::do_call::haba617e1655662f0
[INFO] [stderr]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/std/src/panicking.rs:581:40
[INFO] [stderr]   27:     0x591614aa3f86 - std::panicking::catch_unwind::hdcb3b0cdc4ef023b
[INFO] [stderr]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/std/src/panicking.rs:544:19
[INFO] [stderr]   28:     0x591614aa3f86 - std::panic::catch_unwind::hd7496902866db161
[INFO] [stderr]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/std/src/panic.rs:359:14
[INFO] [stderr]   29:     0x591614aa3f86 - std::rt::lang_start_internal::h9f282d832ae47dd5
[INFO] [stderr]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/std/src/rt.rs:171:5
[INFO] [stderr]   30:     0x5916147a1467 - std::rt::lang_start::hecf8c43e1441fba3
[INFO] [stderr]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/std/src/rt.rs:205:5
[INFO] [stderr]   31:     0x5916147acb7e - main
[INFO] [stderr]   32:     0x7af5a8a701ca - <unknown>
[INFO] [stderr]   33:     0x7af5a8a7028b - __libc_start_main
[INFO] [stderr]   34:     0x591614796b65 - _start
[INFO] [stderr]   35:                0x0 - <unknown>
[INFO] [stdout] test cli_access_server_sled_engine ... FAILED
[INFO] [stdout] test cli_access_server_kvs_engine ... ok
[INFO] [stdout] test cli_wrong_engine has been running for over 60 seconds
[ERROR] error running command: no output for 300 seconds
[INFO] running `Command { std: "docker" "inspect" "948f0a03f663da325ae5790eb2037efd3dc5b6fb6901064930813b2f461d94c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "948f0a03f663da325ae5790eb2037efd3dc5b6fb6901064930813b2f461d94c7", kill_on_drop: false }`
[INFO] [stdout] 948f0a03f663da325ae5790eb2037efd3dc5b6fb6901064930813b2f461d94c7
