[INFO] cloning repository https://github.com/gvedant666/kv_store
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/gvedant666/kv_store" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgvedant666%2Fkv_store", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgvedant666%2Fkv_store'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 17347b428ef77912636590a483842ef54f8baa2a
[INFO] testing gvedant666/kv_store against master#cced03bfd61a304243a34504618ecec86c17063f for pr-154065-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgvedant666%2Fkv_store" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/gvedant666/kv_store
[INFO] finished tweaking git repo https://github.com/gvedant666/kv_store
[INFO] tweaked toml for git repo https://github.com/gvedant666/kv_store written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/gvedant666/kv_store on toolchain cced03bfd61a304243a34504618ecec86c17063f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cced03bfd61a304243a34504618ecec86c17063f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/gvedant666/kv_store already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cced03bfd61a304243a34504618ecec86c17063f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "+cced03bfd61a304243a34504618ecec86c17063f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 07c97d292c0dc1864f1341f93a66a93981125790775328f4166ae0b368726ee3
[INFO] running `Command { std: "docker" "start" "-a" "07c97d292c0dc1864f1341f93a66a93981125790775328f4166ae0b368726ee3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "07c97d292c0dc1864f1341f93a66a93981125790775328f4166ae0b368726ee3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "07c97d292c0dc1864f1341f93a66a93981125790775328f4166ae0b368726ee3", kill_on_drop: false }`
[INFO] [stdout] 07c97d292c0dc1864f1341f93a66a93981125790775328f4166ae0b368726ee3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+cced03bfd61a304243a34504618ecec86c17063f" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 279decd502e7c05f4e8514a66d6e4159d4e4df1a451bf6717e70f64616a98c3e
[INFO] running `Command { std: "docker" "start" "-a" "279decd502e7c05f4e8514a66d6e4159d4e4df1a451bf6717e70f64616a98c3e", kill_on_drop: false }`
[INFO] [stderr]    Compiling mio v0.8.11
[INFO] [stderr]    Compiling kvstore v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `ErrorCode`
[INFO] [stdout]  --> src/server.rs:1:47
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::protocol::{parse_request, Command, ErrorCode, ResponseBuilder};
[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: `hash_bytes`
[INFO] [stdout]  --> src/storage.rs:4:23
[INFO] [stdout]   |
[INFO] [stdout] 4 | use crate::protocol::{hash_bytes, ErrorCode, ResponseBuilder};
[INFO] [stdout]   |                       ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Node`
[INFO] [stdout]  --> src/zset.rs:3:27
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::avl::{AvlTree, Node};
[INFO] [stdout]   |                           ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/server.rs:159:13
[INFO] [stdout]     |
[INFO] [stdout] 159 |         let mut response = ResponseBuilder::new();
[INFO] [stdout]     |             ----^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cmd`
[INFO] [stdout]    --> src/server.rs:158:31
[INFO] [stdout]     |
[INFO] [stdout] 158 |     fn process_command(&self, cmd: &Command) -> Vec<u8> {
[INFO] [stdout]     |                               ^^^ help: if this is intentional, prefix it with an underscore: `_cmd`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `storage` is never read
[INFO] [stdout]   --> src/server.rs:33:5
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub struct Server {
[INFO] [stdout]    |            ------ field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 33 |     storage: StorageEngine,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Terminate` is never constructed
[INFO] [stdout]   --> src/threadpool.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout]  8 | enum Message {
[INFO] [stdout]    |      ------- variant in this enum
[INFO] [stdout]  9 |     NewJob(Job),
[INFO] [stdout] 10 |     Terminate,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `id` is never read
[INFO] [stdout]   --> src/threadpool.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | struct Worker {
[INFO] [stdout]    |        ------ field in this struct
[INFO] [stdout] 14 |     id: usize,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/protocol.rs:17:27
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub fn parse_request(buf: &[u8]) -> Result<Option<(Command, usize)>, &'static str> {
[INFO] [stdout]    |                           ^^^^^                    ^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                           |
[INFO] [stdout]    |                           the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub fn parse_request(buf: &[u8]) -> Result<Option<(Command<'_>, usize)>, &'static str> {
[INFO] [stdout]    |                                                           ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/protocol.rs:102:24
[INFO] [stdout]     |
[INFO] [stdout] 102 |     pub fn array_start(&mut self) -> ArrayBuilder {
[INFO] [stdout]     |                        ^^^^^^^^^     ^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                        |
[INFO] [stdout]     |                        the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 102 |     pub fn array_start(&mut self) -> ArrayBuilder<'_> {
[INFO] [stdout]     |                                                  ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.13s
[INFO] running `Command { std: "docker" "inspect" "279decd502e7c05f4e8514a66d6e4159d4e4df1a451bf6717e70f64616a98c3e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "279decd502e7c05f4e8514a66d6e4159d4e4df1a451bf6717e70f64616a98c3e", kill_on_drop: false }`
[INFO] [stdout] 279decd502e7c05f4e8514a66d6e4159d4e4df1a451bf6717e70f64616a98c3e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+cced03bfd61a304243a34504618ecec86c17063f" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b00121c101e1c08c1dc84b77c8eb3ec6e1a2983dc658d0fc6b1be4a47aa54eb8
[INFO] running `Command { std: "docker" "start" "-a" "b00121c101e1c08c1dc84b77c8eb3ec6e1a2983dc658d0fc6b1be4a47aa54eb8", kill_on_drop: false }`
[INFO] [stdout] warning: unused import: `ErrorCode`
[INFO] [stdout]  --> src/server.rs:1:47
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::protocol::{parse_request, Command, ErrorCode, ResponseBuilder};
[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: `hash_bytes`
[INFO] [stdout]  --> src/storage.rs:4:23
[INFO] [stdout]   |
[INFO] [stdout] 4 | use crate::protocol::{hash_bytes, ErrorCode, ResponseBuilder};
[INFO] [stdout]   |                       ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Node`
[INFO] [stdout]  --> src/zset.rs:3:27
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::avl::{AvlTree, Node};
[INFO] [stdout]   |                           ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/server.rs:159:13
[INFO] [stdout]     |
[INFO] [stdout] 159 |         let mut response = ResponseBuilder::new();
[INFO] [stdout]     |             ----^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cmd`
[INFO] [stdout]    --> src/server.rs:158:31
[INFO] [stdout]     |
[INFO] [stdout] 158 |     fn process_command(&self, cmd: &Command) -> Vec<u8> {
[INFO] [stdout]     |                               ^^^ help: if this is intentional, prefix it with an underscore: `_cmd`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `storage` is never read
[INFO] [stdout]   --> src/server.rs:33:5
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub struct Server {
[INFO] [stdout]    |            ------ field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 33 |     storage: StorageEngine,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Terminate` is never constructed
[INFO] [stdout]   --> src/threadpool.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout]  8 | enum Message {
[INFO] [stdout]    |      ------- variant in this enum
[INFO] [stdout]  9 |     NewJob(Job),
[INFO] [stdout] 10 |     Terminate,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `id` is never read
[INFO] [stdout]   --> src/threadpool.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | struct Worker {
[INFO] [stdout]    |        ------ field in this struct
[INFO] [stdout] 14 |     id: usize,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/protocol.rs:17:27
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub fn parse_request(buf: &[u8]) -> Result<Option<(Command, usize)>, &'static str> {
[INFO] [stdout]    |                           ^^^^^                    ^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                           |
[INFO] [stdout]    |                           the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub fn parse_request(buf: &[u8]) -> Result<Option<(Command<'_>, usize)>, &'static str> {
[INFO] [stdout]    |                                                           ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/protocol.rs:102:24
[INFO] [stdout]     |
[INFO] [stdout] 102 |     pub fn array_start(&mut self) -> ArrayBuilder {
[INFO] [stdout]     |                        ^^^^^^^^^     ^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                        |
[INFO] [stdout]     |                        the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 102 |     pub fn array_start(&mut self) -> ArrayBuilder<'_> {
[INFO] [stdout]     |                                                  ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling kvstore v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `ErrorCode`
[INFO] [stdout]  --> src/server.rs:1:47
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::protocol::{parse_request, Command, ErrorCode, ResponseBuilder};
[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: `hash_bytes`
[INFO] [stdout]  --> src/storage.rs:4:23
[INFO] [stdout]   |
[INFO] [stdout] 4 | use crate::protocol::{hash_bytes, ErrorCode, ResponseBuilder};
[INFO] [stdout]   |                       ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Node`
[INFO] [stdout]  --> src/zset.rs:3:27
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::avl::{AvlTree, Node};
[INFO] [stdout]   |                           ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/server.rs:159:13
[INFO] [stdout]     |
[INFO] [stdout] 159 |         let mut response = ResponseBuilder::new();
[INFO] [stdout]     |             ----^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cmd`
[INFO] [stdout]    --> src/server.rs:158:31
[INFO] [stdout]     |
[INFO] [stdout] 158 |     fn process_command(&self, cmd: &Command) -> Vec<u8> {
[INFO] [stdout]     |                               ^^^ help: if this is intentional, prefix it with an underscore: `_cmd`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `storage` is never read
[INFO] [stdout]   --> src/server.rs:33:5
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub struct Server {
[INFO] [stdout]    |            ------ field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 33 |     storage: StorageEngine,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Terminate` is never constructed
[INFO] [stdout]   --> src/threadpool.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout]  8 | enum Message {
[INFO] [stdout]    |      ------- variant in this enum
[INFO] [stdout]  9 |     NewJob(Job),
[INFO] [stdout] 10 |     Terminate,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `id` is never read
[INFO] [stdout]   --> src/threadpool.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | struct Worker {
[INFO] [stdout]    |        ------ field in this struct
[INFO] [stdout] 14 |     id: usize,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/protocol.rs:17:27
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub fn parse_request(buf: &[u8]) -> Result<Option<(Command, usize)>, &'static str> {
[INFO] [stdout]    |                           ^^^^^                    ^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                           |
[INFO] [stdout]    |                           the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub fn parse_request(buf: &[u8]) -> Result<Option<(Command<'_>, usize)>, &'static str> {
[INFO] [stdout]    |                                                           ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/protocol.rs:102:24
[INFO] [stdout]     |
[INFO] [stdout] 102 |     pub fn array_start(&mut self) -> ArrayBuilder {
[INFO] [stdout]     |                        ^^^^^^^^^     ^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                        |
[INFO] [stdout]     |                        the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 102 |     pub fn array_start(&mut self) -> ArrayBuilder<'_> {
[INFO] [stdout]     |                                                  ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.66s
[INFO] running `Command { std: "docker" "inspect" "b00121c101e1c08c1dc84b77c8eb3ec6e1a2983dc658d0fc6b1be4a47aa54eb8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b00121c101e1c08c1dc84b77c8eb3ec6e1a2983dc658d0fc6b1be4a47aa54eb8", kill_on_drop: false }`
[INFO] [stdout] b00121c101e1c08c1dc84b77c8eb3ec6e1a2983dc658d0fc6b1be4a47aa54eb8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+cced03bfd61a304243a34504618ecec86c17063f" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 59c3418429710b713c0d0dc7d0e7875baf8d9867ba98acfe525aa4f148f81dc3
[INFO] running `Command { std: "docker" "start" "-a" "59c3418429710b713c0d0dc7d0e7875baf8d9867ba98acfe525aa4f148f81dc3", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `ErrorCode`
[INFO] [stderr]  --> src/server.rs:1:47
[INFO] [stderr]   |
[INFO] [stderr] 1 | use crate::protocol::{parse_request, Command, ErrorCode, ResponseBuilder};
[INFO] [stderr]   |                                               ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `hash_bytes`
[INFO] [stderr]  --> src/storage.rs:4:23
[INFO] [stderr]   |
[INFO] [stderr] 4 | use crate::protocol::{hash_bytes, ErrorCode, ResponseBuilder};
[INFO] [stderr]   |                       ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Node`
[INFO] [stderr]  --> src/zset.rs:3:27
[INFO] [stderr]   |
[INFO] [stderr] 3 | use crate::avl::{AvlTree, Node};
[INFO] [stderr]   |                           ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/server.rs:159:13
[INFO] [stderr]     |
[INFO] [stderr] 159 |         let mut response = ResponseBuilder::new();
[INFO] [stderr]     |             ----^^^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `cmd`
[INFO] [stderr]    --> src/server.rs:158:31
[INFO] [stderr]     |
[INFO] [stderr] 158 |     fn process_command(&self, cmd: &Command) -> Vec<u8> {
[INFO] [stderr]     |                               ^^^ help: if this is intentional, prefix it with an underscore: `_cmd`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field `storage` is never read
[INFO] [stderr]   --> src/server.rs:33:5
[INFO] [stderr]    |
[INFO] [stderr] 28 | pub struct Server {
[INFO] [stderr]    |            ------ field in this struct
[INFO] [stderr] ...
[INFO] [stderr] 33 |     storage: StorageEngine,
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant `Terminate` is never constructed
[INFO] [stderr]   --> src/threadpool.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr]  8 | enum Message {
[INFO] [stderr]    |      ------- variant in this enum
[INFO] [stderr]  9 |     NewJob(Job),
[INFO] [stderr] 10 |     Terminate,
[INFO] [stderr]    |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field `id` is never read
[INFO] [stderr]   --> src/threadpool.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 13 | struct Worker {
[INFO] [stderr]    |        ------ field in this struct
[INFO] [stderr] 14 |     id: usize,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]   --> src/protocol.rs:17:27
[INFO] [stderr]    |
[INFO] [stderr] 17 | pub fn parse_request(buf: &[u8]) -> Result<Option<(Command, usize)>, &'static str> {
[INFO] [stderr]    |                           ^^^^^                    ^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]    |                           |
[INFO] [stderr]    |                           the lifetime is elided here
[INFO] [stderr]    |
[INFO] [stderr]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]    |
[INFO] [stderr] 17 | pub fn parse_request(buf: &[u8]) -> Result<Option<(Command<'_>, usize)>, &'static str> {
[INFO] [stderr]    |                                                           ++++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]    --> src/protocol.rs:102:24
[INFO] [stderr]     |
[INFO] [stderr] 102 |     pub fn array_start(&mut self) -> ArrayBuilder {
[INFO] [stderr]     |                        ^^^^^^^^^     ^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]     |                        |
[INFO] [stderr]     |                        the lifetime is elided here
[INFO] [stderr]     |
[INFO] [stderr]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]     |
[INFO] [stderr] 102 |     pub fn array_start(&mut self) -> ArrayBuilder<'_> {
[INFO] [stderr]     |                                                  ++++
[INFO] [stderr] 
[INFO] [stderr] warning: `kvstore` (lib) generated 10 warnings (run `cargo fix --lib -p kvstore` to apply 7 suggestions)
[INFO] [stderr] warning: `kvstore` (lib test) generated 10 warnings (10 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.10s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/kvstore-c121a5b1fee07b33)
[INFO] [stdout] 
[INFO] [stdout] running 24 tests
[INFO] [stdout] test avl::tests::test_balance ... ok
[INFO] [stdout] test avl::tests::test_delete ... ok
[INFO] [stdout] test concurrent_map::tests::test_basic_operations ... ok
[INFO] [stdout] test concurrent_map::tests::test_update ... ok
[INFO] [stdout] test heap::tests::test_min_heap_property ... ok
[INFO] [stdout] test heap::tests::test_get_expired ... ok
[INFO] [stdout] test heap::tests::test_remove_by_index ... ok
[INFO] [stderr] free(): double free detected in tcache 2
[INFO] [stderr] error: test failed, to rerun pass `--lib`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/deps/kvstore-c121a5b1fee07b33` (signal: 6, SIGABRT: process abort signal)
[INFO] running `Command { std: "docker" "inspect" "59c3418429710b713c0d0dc7d0e7875baf8d9867ba98acfe525aa4f148f81dc3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "59c3418429710b713c0d0dc7d0e7875baf8d9867ba98acfe525aa4f148f81dc3", kill_on_drop: false }`
[INFO] [stdout] 59c3418429710b713c0d0dc7d0e7875baf8d9867ba98acfe525aa4f148f81dc3
