[INFO] cloning repository https://github.com/fvkramer/kv-client
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/fvkramer/kv-client" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffvkramer%2Fkv-client", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffvkramer%2Fkv-client'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 038cf5dd959dee4bdd09b6689ed978daa9552199
[INFO] checking fvkramer/kv-client against b26b4e75de6aac63fc6beeecebad5b3a5f84d2a4 for pr-164582
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffvkramer%2Fkv-client" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/fvkramer/kv-client
[INFO] finished tweaking git repo https://github.com/fvkramer/kv-client
[INFO] tweaked toml for git repo https://github.com/fvkramer/kv-client written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/fvkramer/kv-client on toolchain b26b4e75de6aac63fc6beeecebad5b3a5f84d2a4
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b26b4e75de6aac63fc6beeecebad5b3a5f84d2a4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/fvkramer/kv-client 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" "+b26b4e75de6aac63fc6beeecebad5b3a5f84d2a4" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded walkdir v2.2.8
[INFO] [stderr]   Downloaded same-file v1.0.4
[INFO] [stderr]   Downloaded remove_dir_all v0.5.1
[INFO] [stderr]   Downloaded tempfile v3.0.8
[INFO] [stderr]   Downloaded redox_syscall v0.1.54
[INFO] [stderr]   Downloaded numtoa v0.1.0
[INFO] [stderr]   Downloaded treeline v0.1.0
[INFO] [stderr]   Downloaded cfg-if v0.1.9
[INFO] [stderr]   Downloaded memoffset v0.5.3
[INFO] [stderr]   Downloaded utf8-ranges v1.0.3
[INFO] [stderr]   Downloaded num_cpus v1.11.1
[INFO] [stderr]   Downloaded hermit-abi v0.1.5
[INFO] [stderr]   Downloaded predicates-tree v1.0.0
[INFO] [stderr]   Downloaded bitflags v1.1.0
[INFO] [stderr]   Downloaded normalize-line-endings v0.2.2
[INFO] [stderr]   Downloaded float-cmp v0.4.0
[INFO] [stderr]   Downloaded failure_derive v0.1.5
[INFO] [stderr]   Downloaded rand_xoshiro v0.1.0
[INFO] [stderr]   Downloaded quote v0.6.12
[INFO] [stderr]   Downloaded rustc-demangle v0.1.15
[INFO] [stderr]   Downloaded criterion-plot v0.3.1
[INFO] [stderr]   Downloaded predicates v1.0.1
[INFO] [stderr]   Downloaded predicates-core v1.0.0
[INFO] [stderr]   Downloaded crossbeam-utils v0.7.0
[INFO] [stderr]   Downloaded crossbeam-deque v0.7.2
[INFO] [stderr]   Downloaded crossbeam-epoch v0.8.0
[INFO] [stderr]   Downloaded csv-core v0.1.6
[INFO] [stderr]   Downloaded assert_cmd v0.11.1
[INFO] [stderr]   Downloaded escargot v0.4.0
[INFO] [stderr]   Downloaded blake2b_simd v0.5.9
[INFO] [stderr]   Downloaded failure v0.1.5
[INFO] [stderr]   Downloaded cc v1.0.37
[INFO] [stderr]   Downloaded termion v1.5.2
[INFO] [stderr]   Downloaded proc-macro2 v1.0.7
[INFO] [stderr]   Downloaded serde_derive v1.0.104
[INFO] [stderr]   Downloaded aho-corasick v0.7.3
[INFO] [stderr]   Downloaded backtrace v0.3.30
[INFO] [stderr]   Downloaded serde v1.0.104
[INFO] [stderr]   Downloaded serde_json v1.0.44
[INFO] [stderr]   Downloaded regex-automata v0.1.8
[INFO] [stderr]   Downloaded criterion v0.2.11
[INFO] [stderr]   Downloaded chrono v0.4.10
[INFO] [stderr]   Downloaded difference v2.0.0
[INFO] [stderr]   Downloaded syn v0.15.35
[INFO] [stderr]   Downloaded syn v1.0.13
[INFO] [stderr]   Downloaded regex v1.1.7
[INFO] [stderr]   Downloaded regex-syntax v0.6.7
[INFO] [stderr]   Downloaded bstr v0.2.8
[INFO] [stderr]   Downloaded libc v0.2.58
[INFO] [stderr]   Downloaded csv v1.1.1
[INFO] [stderr]   Downloaded winapi v0.3.7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 4f6a8448239383e7234410375aa38478f985f535fe45829c959630d9507ad47e
[INFO] running `Command { std: "docker" "start" "4f6a8448239383e7234410375aa38478f985f535fe45829c959630d9507ad47e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4f6a8448239383e7234410375aa38478f985f535fe45829c959630d9507ad47e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "4f6a8448239383e7234410375aa38478f985f535fe45829c959630d9507ad47e" "/opt/rustwide/cargo-home/bin/cargo" "+b26b4e75de6aac63fc6beeecebad5b3a5f84d2a4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4f6a8448239383e7234410375aa38478f985f535fe45829c959630d9507ad47e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "4f6a8448239383e7234410375aa38478f985f535fe45829c959630d9507ad47e" "/opt/rustwide/cargo-home/bin/cargo" "+b26b4e75de6aac63fc6beeecebad5b3a5f84d2a4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.58
[INFO] [stderr]     Checking cfg-if v0.1.9
[INFO] [stderr]     Checking lazy_static v1.3.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.7
[INFO] [stderr]    Compiling syn v1.0.13
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling serde v1.0.104
[INFO] [stderr]     Checking rand_core v0.4.0
[INFO] [stderr]    Compiling ryu v1.0.2
[INFO] [stderr]    Compiling memchr v2.2.0
[INFO] [stderr]     Checking itoa v0.4.4
[INFO] [stderr]    Compiling crossbeam-utils v0.7.0
[INFO] [stderr]    Compiling cc v1.0.37
[INFO] [stderr]    Compiling syn v0.15.35
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]    Compiling quote v0.6.12
[INFO] [stderr]    Compiling memoffset v0.5.3
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling bitflags v1.1.0
[INFO] [stderr]    Compiling slog v2.5.2
[INFO] [stderr]    Compiling backtrace v0.3.30
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.0
[INFO] [stderr]     Checking unicode-width v0.1.5
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking scopeguard v1.0.0
[INFO] [stderr]     Checking rustc-demangle v0.1.15
[INFO] [stderr]    Compiling regex v1.1.7
[INFO] [stderr]     Checking take_mut v0.2.2
[INFO] [stderr]     Checking ucd-util v0.1.3
[INFO] [stderr]     Checking crossbeam-queue v0.2.1
[INFO] [stderr]    Compiling escargot v0.4.0
[INFO] [stderr]     Checking regex-syntax v0.6.7
[INFO] [stderr]     Checking predicates-core v1.0.0
[INFO] [stderr]     Checking utf8-ranges v1.0.3
[INFO] [stderr]     Checking rand_chacha v0.1.1
[INFO] [stderr]     Checking rand_pcg v0.1.2
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking dirs-sys v0.3.4
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking regex-automata v0.1.8
[INFO] [stderr]     Checking num_cpus v1.11.1
[INFO] [stderr]     Checking slog-async v2.3.0
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking rand_jitter v0.1.4
[INFO] [stderr]     Checking log v0.4.6
[INFO] [stderr]     Checking dirs v2.0.2
[INFO] [stderr]     Checking aho-corasick v0.7.3
[INFO] [stderr]     Checking crossbeam-deque v0.7.2
[INFO] [stderr]     Checking term v0.6.1
[INFO] [stderr]     Checking csv-core v0.1.6
[INFO] [stderr]     Checking normalize-line-endings v0.2.2
[INFO] [stderr]    Compiling backtrace-sys v0.1.28
[INFO] [stderr]     Checking treeline v0.1.0
[INFO] [stderr]     Checking same-file v1.0.4
[INFO] [stderr]     Checking difference v2.0.0
[INFO] [stderr]     Checking rayon-core v1.7.0
[INFO] [stderr]     Checking rand v0.6.5
[INFO] [stderr]     Checking criterion-plot v0.3.1
[INFO] [stderr]     Checking walkdir v2.2.8
[INFO] [stderr]     Checking predicates-tree v1.0.0
[INFO] [stderr]     Checking rand_xoshiro v0.1.0
[INFO] [stderr]     Checking remove_dir_all v0.5.1
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking float-cmp v0.4.0
[INFO] [stderr]     Checking rayon v1.3.0
[INFO] [stderr]     Checking chrono v0.4.10
[INFO] [stderr]     Checking tempfile v3.0.8
[INFO] [stderr]     Checking slog-term v2.4.2
[INFO] [stderr]    Compiling synstructure v0.10.2
[INFO] [stderr]     Checking predicates v1.0.1
[INFO] [stderr]    Compiling serde_derive v1.0.104
[INFO] [stderr]     Checking failure v0.1.5
[INFO] [stderr]     Checking serde_json v1.0.44
[INFO] [stderr]     Checking bstr v0.2.8
[INFO] [stderr]     Checking csv v1.1.1
[INFO] [stderr]     Checking kvs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking tinytemplate v1.0.3
[INFO] [stdout] warning: unexpected `cfg` condition value: `cargo-clippy`
[INFO] [stdout]    --> src/kv.rs:276:10
[INFO] [stdout]     |
[INFO] [stdout] 276 | #[derive(Serialize, Deserialize, Debug)]
[INFO] [stdout]     |          ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: no expected values for `feature`
[INFO] [stdout]     = note: using a cfg inside a derive macro will use the cfgs from the destination crate and not the ones from the defining crate
[INFO] [stdout]     = help: try referring to `Serialize` crate for guidance on how handle this unexpected cfg
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]     = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stdout]     = note: this warning originates in the derive macro `Serialize` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `cargo-clippy`
[INFO] [stdout]    --> src/kv.rs:276:21
[INFO] [stdout]     |
[INFO] [stdout] 276 | #[derive(Serialize, Deserialize, Debug)]
[INFO] [stdout]     |                     ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: no expected values for `feature`
[INFO] [stdout]     = note: using a cfg inside a derive macro will use the cfgs from the destination crate and not the ones from the defining crate
[INFO] [stdout]     = help: try referring to `Deserialize` crate for guidance on how handle this unexpected cfg
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]     = note: this warning originates in the derive macro `Deserialize` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `key`
[INFO] [stdout]   --> src/kv.rs:16:23
[INFO] [stdout]    |
[INFO] [stdout] 16 |     fn set(&mut self, key: String, value: String) -> Result<()> {
[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/kv.rs:16:36
[INFO] [stdout]    |
[INFO] [stdout] 16 |     fn set(&mut self, key: String, value: String) -> Result<()> {
[INFO] [stdout]    |                                    ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `key`
[INFO] [stdout]   --> src/kv.rs:20:23
[INFO] [stdout]    |
[INFO] [stdout] 20 |     fn get(&mut self, key: String) -> Result<Option<String>> {
[INFO] [stdout]    |                       ^^^ help: if this is intentional, prefix it with an underscore: `_key`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `key`
[INFO] [stdout]   --> src/kv.rs:24:26
[INFO] [stdout]    |
[INFO] [stdout] 24 |     fn remove(&mut self, key: String) -> Result<()> {
[INFO] [stdout]    |                          ^^^ help: if this is intentional, prefix it with an underscore: `_key`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: non-local `impl` definition, `impl` blocks should be written at the same level as their item
[INFO] [stdout]  --> src/error.rs:5:10
[INFO] [stdout]   |
[INFO] [stdout] 5 | #[derive(Fail, Debug)]
[INFO] [stdout]   |          ^---
[INFO] [stdout]   |          |
[INFO] [stdout]   |          `Fail` is not local
[INFO] [stdout]   |          move the `impl` block outside of this constant `_DERIVE_failure_Fail_FOR_KvsError`
[INFO] [stdout] 6 | pub enum KvsError {
[INFO] [stdout]   |          -------- `KvsError` is not local
[INFO] [stdout]   |
[INFO] [stdout]   = note: the derive macro `Fail` defines the non-local `impl`, and may need to be changed
[INFO] [stdout]   = note: the derive macro `Fail` may come from an old version of the `failure_derive` crate, try updating your dependency with `cargo update -p failure_derive`
[INFO] [stdout]   = note: an `impl` is never scoped, even when it is nested inside an item, as it may impact type checking outside of that item, which can be the case if neither the trait or the self type are at the same nesting level as the `impl`
[INFO] [stdout]   = note: items in an anonymous const item (`const _: () = { ... }`) are treated as in the same scope as the anonymous const's declaration for the purpose of this lint
[INFO] [stdout]   = note: `#[warn(non_local_definitions)]` on by default
[INFO] [stdout]   = note: this warning originates in the derive macro `Fail` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: non-local `impl` definition, `impl` blocks should be written at the same level as their item
[INFO] [stdout]  --> src/error.rs:5:10
[INFO] [stdout]   |
[INFO] [stdout] 5 | #[derive(Fail, Debug)]
[INFO] [stdout]   |          ^---
[INFO] [stdout]   |          |
[INFO] [stdout]   |          `Display` is not local
[INFO] [stdout]   |          move the `impl` block outside of this constant `_DERIVE_failure_core_fmt_Display_FOR_KvsError`
[INFO] [stdout] 6 | pub enum KvsError {
[INFO] [stdout]   |          -------- `KvsError` is not local
[INFO] [stdout]   |
[INFO] [stdout]   = note: the derive macro `Fail` defines the non-local `impl`, and may need to be changed
[INFO] [stdout]   = note: the derive macro `Fail` may come from an old version of the `failure_derive` crate, try updating your dependency with `cargo update -p failure_derive`
[INFO] [stdout]   = note: an `impl` is never scoped, even when it is nested inside an item, as it may impact type checking outside of that item, which can be the case if neither the trait or the self type are at the same nesting level as the `impl`
[INFO] [stdout]   = note: items in an anonymous const item (`const _: () = { ... }`) are treated as in the same scope as the anonymous const's declaration for the purpose of this lint
[INFO] [stdout]   = note: this warning originates in the derive macro `Fail` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: non-local `impl` definition, `impl` blocks should be written at the same level as their item
[INFO] [stdout]    --> src/kv.rs:276:10
[INFO] [stdout]     |
[INFO] [stdout] 276 | #[derive(Serialize, Deserialize, Debug)]
[INFO] [stdout]     |          ^--------
[INFO] [stdout]     |          |
[INFO] [stdout]     |          `Serialize` is not local
[INFO] [stdout]     |          move the `impl` block outside of this constant `_IMPL_SERIALIZE_FOR_Command`
[INFO] [stdout] 277 | enum Command {
[INFO] [stdout]     |      ------- `Command` is not local
[INFO] [stdout]     |
[INFO] [stdout]     = note: the derive macro `Serialize` defines the non-local `impl`, and may need to be changed
[INFO] [stdout]     = note: the derive macro `Serialize` may come from an old version of the `serde_derive` crate, try updating your dependency with `cargo update -p serde_derive`
[INFO] [stdout]     = note: an `impl` is never scoped, even when it is nested inside an item, as it may impact type checking outside of that item, which can be the case if neither the trait or the self type are at the same nesting level as the `impl`
[INFO] [stdout]     = note: items in an anonymous const item (`const _: () = { ... }`) are treated as in the same scope as the anonymous const's declaration for the purpose of this lint
[INFO] [stdout]     = note: this warning originates in the derive macro `Serialize` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: non-local `impl` definition, `impl` blocks should be written at the same level as their item
[INFO] [stdout]    --> src/kv.rs:276:21
[INFO] [stdout]     |
[INFO] [stdout] 276 | #[derive(Serialize, Deserialize, Debug)]
[INFO] [stdout]     |                     ^----------
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     `Deserialize` is not local
[INFO] [stdout]     |                     move the `impl` block outside of this constant `_IMPL_DESERIALIZE_FOR_Command`
[INFO] [stdout] 277 | enum Command {
[INFO] [stdout]     |      ------- `Command` is not local
[INFO] [stdout]     |
[INFO] [stdout]     = note: the derive macro `Deserialize` defines the non-local `impl`, and may need to be changed
[INFO] [stdout]     = note: the derive macro `Deserialize` may come from an old version of the `serde_derive` crate, try updating your dependency with `cargo update -p serde_derive`
[INFO] [stdout]     = note: an `impl` is never scoped, even when it is nested inside an item, as it may impact type checking outside of that item, which can be the case if neither the trait or the self type are at the same nesting level as the `impl`
[INFO] [stdout]     = note: items in an anonymous const item (`const _: () = { ... }`) are treated as in the same scope as the anonymous const's declaration for the purpose of this lint
[INFO] [stdout]     = note: this warning originates in the derive macro `Deserialize` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Shutdown`
[INFO] [stdout]  --> src/bin/kvs-client.rs:3:26
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::net::{Ipv4Addr, Shutdown, SocketAddr, SocketAddrV4, TcpStream};
[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::time::Duration`
[INFO] [stdout]  --> src/bin/kvs-client.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::time::Duration;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/bin/kvs-client.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 22 |     panic!("no args");
[INFO] [stdout]    |     ----------------- any code following this expression is unreachable
[INFO] [stdout] 23 |     Ok(())
[INFO] [stdout]    |     ^^^^^^ unreachable expression
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/bin/kvs-client.rs:35:5
[INFO] [stdout]    |
[INFO] [stdout] 27 | /     loop {
[INFO] [stdout] 28 | |         let mut input = String::new();
[INFO] [stdout] 29 | |         print!("> ");
[INFO] [stdout] 30 | |         io::stdout().flush();
[INFO] [stdout] ...  |
[INFO] [stdout] 33 | |         transmit_client_input(stream, input.trim());
[INFO] [stdout] 34 | |     }
[INFO] [stdout]    | |_____- any code following this expression is unreachable
[INFO] [stdout] 35 |       Ok(())
[INFO] [stdout]    |       ^^^^^^ unreachable expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::BufReader`
[INFO] [stdout]  --> src/bin/kvs-server.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::io::BufReader;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]   --> src/bin/kvs-server.rs:17:16
[INFO] [stdout]    |
[INFO] [stdout] 17 |             if (size > 0) {
[INFO] [stdout]    |                ^        ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 17 -             if (size > 0) {
[INFO] [stdout] 17 +             if size > 0 {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/kvs-client.rs:11:15
[INFO] [stdout]    |
[INFO] [stdout] 11 |     if let Ok(mut stream) = TcpStream::connect(&addr) {
[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: function `run_command_prompt` is never used
[INFO] [stdout]   --> src/bin/kvs-client.rs:26:4
[INFO] [stdout]    |
[INFO] [stdout] 26 | fn run_command_prompt(stream: &mut TcpStream) -> Result<()> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `transmit_client_input` is never used
[INFO] [stdout]   --> src/bin/kvs-client.rs:38:4
[INFO] [stdout]    |
[INFO] [stdout] 38 | fn transmit_client_input(stream: &mut TcpStream, input: &str) -> Result<usize> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]  --> src/bin/kvs-client.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     Command::new("clear").spawn()?.wait();
[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] 9 |     let _ = Command::new("clear").spawn()?.wait();
[INFO] [stdout]   |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/bin/kvs-client.rs:30:9
[INFO] [stdout]    |
[INFO] [stdout] 30 |         io::stdout().flush();
[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] 30 |         let _ = io::stdout().flush();
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/bin/kvs-client.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |         transmit_client_input(stream, input.trim());
[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] 33 |         let _ = transmit_client_input(stream, input.trim());
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking criterion v0.2.11
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/bin/kvs-server.rs:77:13
[INFO] [stdout]    |
[INFO] [stdout] 77 |             handle_client(stream.unwrap());
[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] 77 |             let _ = handle_client(stream.unwrap());
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/bin/kvs-server.rs:85:13
[INFO] [stdout]    |
[INFO] [stdout] 85 |             handle_client(stream.unwrap());
[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] 85 |             let _ = handle_client(stream.unwrap());
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking assert_cmd v0.11.1
[INFO] [stdout] warning: unused import: `std::io::BufReader`
[INFO] [stdout]  --> src/bin/kvs-server.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::io::BufReader;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]   --> src/bin/kvs-server.rs:17:16
[INFO] [stdout]    |
[INFO] [stdout] 17 |             if (size > 0) {
[INFO] [stdout]    |                ^        ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 17 -             if (size > 0) {
[INFO] [stdout] 17 +             if size > 0 {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Shutdown`
[INFO] [stdout]  --> src/bin/kvs-client.rs:3:26
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::net::{Ipv4Addr, Shutdown, SocketAddr, SocketAddrV4, TcpStream};
[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::time::Duration`
[INFO] [stdout]  --> src/bin/kvs-client.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::time::Duration;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/bin/kvs-client.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 22 |     panic!("no args");
[INFO] [stdout]    |     ----------------- any code following this expression is unreachable
[INFO] [stdout] 23 |     Ok(())
[INFO] [stdout]    |     ^^^^^^ unreachable expression
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/bin/kvs-client.rs:35:5
[INFO] [stdout]    |
[INFO] [stdout] 27 | /     loop {
[INFO] [stdout] 28 | |         let mut input = String::new();
[INFO] [stdout] 29 | |         print!("> ");
[INFO] [stdout] 30 | |         io::stdout().flush();
[INFO] [stdout] ...  |
[INFO] [stdout] 33 | |         transmit_client_input(stream, input.trim());
[INFO] [stdout] 34 | |     }
[INFO] [stdout]    | |_____- any code following this expression is unreachable
[INFO] [stdout] 35 |       Ok(())
[INFO] [stdout]    |       ^^^^^^ unreachable expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/kvs-client.rs:11:15
[INFO] [stdout]    |
[INFO] [stdout] 11 |     if let Ok(mut stream) = TcpStream::connect(&addr) {
[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: function `run_command_prompt` is never used
[INFO] [stdout]   --> src/bin/kvs-client.rs:26:4
[INFO] [stdout]    |
[INFO] [stdout] 26 | fn run_command_prompt(stream: &mut TcpStream) -> Result<()> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `transmit_client_input` is never used
[INFO] [stdout]   --> src/bin/kvs-client.rs:38:4
[INFO] [stdout]    |
[INFO] [stdout] 38 | fn transmit_client_input(stream: &mut TcpStream, input: &str) -> Result<usize> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `cargo-clippy`
[INFO] [stdout]    --> src/kv.rs:276:10
[INFO] [stdout]     |
[INFO] [stdout] 276 | #[derive(Serialize, Deserialize, Debug)]
[INFO] [stdout]     |          ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: no expected values for `feature`
[INFO] [stdout]     = note: using a cfg inside a derive macro will use the cfgs from the destination crate and not the ones from the defining crate
[INFO] [stdout]     = help: try referring to `Serialize` crate for guidance on how handle this unexpected cfg
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]     = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stdout]     = note: this warning originates in the derive macro `Serialize` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `cargo-clippy`
[INFO] [stdout]    --> src/kv.rs:276:21
[INFO] [stdout]     |
[INFO] [stdout] 276 | #[derive(Serialize, Deserialize, Debug)]
[INFO] [stdout]     |                     ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: no expected values for `feature`
[INFO] [stdout]     = note: using a cfg inside a derive macro will use the cfgs from the destination crate and not the ones from the defining crate
[INFO] [stdout]     = help: try referring to `Deserialize` crate for guidance on how handle this unexpected cfg
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]     = note: this warning originates in the derive macro `Deserialize` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]  --> src/bin/kvs-client.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     Command::new("clear").spawn()?.wait();
[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] 9 |     let _ = Command::new("clear").spawn()?.wait();
[INFO] [stdout]   |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/bin/kvs-client.rs:30:9
[INFO] [stdout]    |
[INFO] [stdout] 30 |         io::stdout().flush();
[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] 30 |         let _ = io::stdout().flush();
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/bin/kvs-client.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |         transmit_client_input(stream, input.trim());
[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] 33 |         let _ = transmit_client_input(stream, input.trim());
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `KvsEngine`
[INFO] [stdout]  --> tests/kv_store.rs:1:20
[INFO] [stdout]   |
[INFO] [stdout] 1 | use kvs::{KvStore, KvsEngine, Result};
[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 `std::result::Result` that must be used
[INFO] [stdout]   --> src/bin/kvs-server.rs:77:13
[INFO] [stdout]    |
[INFO] [stdout] 77 |             handle_client(stream.unwrap());
[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] 77 |             let _ = handle_client(stream.unwrap());
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/bin/kvs-server.rs:85:13
[INFO] [stdout]    |
[INFO] [stdout] 85 |             handle_client(stream.unwrap());
[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] 85 |             let _ = handle_client(stream.unwrap());
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `key`
[INFO] [stdout]   --> src/kv.rs:16:23
[INFO] [stdout]    |
[INFO] [stdout] 16 |     fn set(&mut self, key: String, value: String) -> Result<()> {
[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/kv.rs:16:36
[INFO] [stdout]    |
[INFO] [stdout] 16 |     fn set(&mut self, key: String, value: String) -> Result<()> {
[INFO] [stdout]    |                                    ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `key`
[INFO] [stdout]   --> src/kv.rs:20:23
[INFO] [stdout]    |
[INFO] [stdout] 20 |     fn get(&mut self, key: String) -> Result<Option<String>> {
[INFO] [stdout]    |                       ^^^ help: if this is intentional, prefix it with an underscore: `_key`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `key`
[INFO] [stdout]   --> src/kv.rs:24:26
[INFO] [stdout]    |
[INFO] [stdout] 24 |     fn remove(&mut self, key: String) -> Result<()> {
[INFO] [stdout]    |                          ^^^ help: if this is intentional, prefix it with an underscore: `_key`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: non-local `impl` definition, `impl` blocks should be written at the same level as their item
[INFO] [stdout]  --> src/error.rs:5:10
[INFO] [stdout]   |
[INFO] [stdout] 5 | #[derive(Fail, Debug)]
[INFO] [stdout]   |          ^---
[INFO] [stdout]   |          |
[INFO] [stdout]   |          `Fail` is not local
[INFO] [stdout]   |          move the `impl` block outside of this constant `_DERIVE_failure_Fail_FOR_KvsError`
[INFO] [stdout] 6 | pub enum KvsError {
[INFO] [stdout]   |          -------- `KvsError` is not local
[INFO] [stdout]   |
[INFO] [stdout]   = note: the derive macro `Fail` defines the non-local `impl`, and may need to be changed
[INFO] [stdout]   = note: the derive macro `Fail` may come from an old version of the `failure_derive` crate, try updating your dependency with `cargo update -p failure_derive`
[INFO] [stdout]   = note: an `impl` is never scoped, even when it is nested inside an item, as it may impact type checking outside of that item, which can be the case if neither the trait or the self type are at the same nesting level as the `impl`
[INFO] [stdout]   = note: items in an anonymous const item (`const _: () = { ... }`) are treated as in the same scope as the anonymous const's declaration for the purpose of this lint
[INFO] [stdout]   = note: `#[warn(non_local_definitions)]` on by default
[INFO] [stdout]   = note: this warning originates in the derive macro `Fail` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: non-local `impl` definition, `impl` blocks should be written at the same level as their item
[INFO] [stdout]  --> src/error.rs:5:10
[INFO] [stdout]   |
[INFO] [stdout] 5 | #[derive(Fail, Debug)]
[INFO] [stdout]   |          ^---
[INFO] [stdout]   |          |
[INFO] [stdout]   |          `Display` is not local
[INFO] [stdout]   |          move the `impl` block outside of this constant `_DERIVE_failure_core_fmt_Display_FOR_KvsError`
[INFO] [stdout] 6 | pub enum KvsError {
[INFO] [stdout]   |          -------- `KvsError` is not local
[INFO] [stdout]   |
[INFO] [stdout]   = note: the derive macro `Fail` defines the non-local `impl`, and may need to be changed
[INFO] [stdout]   = note: the derive macro `Fail` may come from an old version of the `failure_derive` crate, try updating your dependency with `cargo update -p failure_derive`
[INFO] [stdout]   = note: an `impl` is never scoped, even when it is nested inside an item, as it may impact type checking outside of that item, which can be the case if neither the trait or the self type are at the same nesting level as the `impl`
[INFO] [stdout]   = note: items in an anonymous const item (`const _: () = { ... }`) are treated as in the same scope as the anonymous const's declaration for the purpose of this lint
[INFO] [stdout]   = note: this warning originates in the derive macro `Fail` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: non-local `impl` definition, `impl` blocks should be written at the same level as their item
[INFO] [stdout]    --> src/kv.rs:276:10
[INFO] [stdout]     |
[INFO] [stdout] 276 | #[derive(Serialize, Deserialize, Debug)]
[INFO] [stdout]     |          ^--------
[INFO] [stdout]     |          |
[INFO] [stdout]     |          `Serialize` is not local
[INFO] [stdout]     |          move the `impl` block outside of this constant `_IMPL_SERIALIZE_FOR_Command`
[INFO] [stdout] 277 | enum Command {
[INFO] [stdout]     |      ------- `Command` is not local
[INFO] [stdout]     |
[INFO] [stdout]     = note: the derive macro `Serialize` defines the non-local `impl`, and may need to be changed
[INFO] [stdout]     = note: the derive macro `Serialize` may come from an old version of the `serde_derive` crate, try updating your dependency with `cargo update -p serde_derive`
[INFO] [stdout]     = note: an `impl` is never scoped, even when it is nested inside an item, as it may impact type checking outside of that item, which can be the case if neither the trait or the self type are at the same nesting level as the `impl`
[INFO] [stdout]     = note: items in an anonymous const item (`const _: () = { ... }`) are treated as in the same scope as the anonymous const's declaration for the purpose of this lint
[INFO] [stdout]     = note: this warning originates in the derive macro `Serialize` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: non-local `impl` definition, `impl` blocks should be written at the same level as their item
[INFO] [stdout]    --> src/kv.rs:276:21
[INFO] [stdout]     |
[INFO] [stdout] 276 | #[derive(Serialize, Deserialize, Debug)]
[INFO] [stdout]     |                     ^----------
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     `Deserialize` is not local
[INFO] [stdout]     |                     move the `impl` block outside of this constant `_IMPL_DESERIALIZE_FOR_Command`
[INFO] [stdout] 277 | enum Command {
[INFO] [stdout]     |      ------- `Command` is not local
[INFO] [stdout]     |
[INFO] [stdout]     = note: the derive macro `Deserialize` defines the non-local `impl`, and may need to be changed
[INFO] [stdout]     = note: the derive macro `Deserialize` may come from an old version of the `serde_derive` crate, try updating your dependency with `cargo update -p serde_derive`
[INFO] [stdout]     = note: an `impl` is never scoped, even when it is nested inside an item, as it may impact type checking outside of that item, which can be the case if neither the trait or the self type are at the same nesting level as the `impl`
[INFO] [stdout]     = note: items in an anonymous const item (`const _: () = { ... }`) are treated as in the same scope as the anonymous const's declaration for the purpose of this lint
[INFO] [stdout]     = note: this warning originates in the derive macro `Deserialize` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 23.34s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: criterion v0.2.11, rand_core v0.4.0
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 3`
[INFO] running `Command { std: "docker" "inspect" "4f6a8448239383e7234410375aa38478f985f535fe45829c959630d9507ad47e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4f6a8448239383e7234410375aa38478f985f535fe45829c959630d9507ad47e", kill_on_drop: false }`
[INFO] [stdout] 4f6a8448239383e7234410375aa38478f985f535fe45829c959630d9507ad47e
