[INFO] cloning repository https://github.com/wspeirs/family_tree
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/wspeirs/family_tree" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwspeirs%2Ffamily_tree", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwspeirs%2Ffamily_tree'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f52d45136a12246b73cf4397a16d9c1d2a7efbcf
[INFO] testing wspeirs/family_tree against master#432e145bd5a974c5b6f4dd9b352891bd7502b69d for pr-87041
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwspeirs%2Ffamily_tree" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/wspeirs/family_tree on toolchain 432e145bd5a974c5b6f4dd9b352891bd7502b69d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/wspeirs/family_tree
[INFO] finished tweaking git repo https://github.com/wspeirs/family_tree
[INFO] tweaked toml for git repo https://github.com/wspeirs/family_tree written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/wspeirs/family_tree already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded serde v1.0.83
[INFO] [stderr]   Downloaded thread-id v3.3.0
[INFO] [stderr]   Downloaded ordermap v0.3.5
[INFO] [stderr]   Downloaded serde_derive v1.0.103
[INFO] [stderr]   Downloaded simple-logging v2.0.2
[INFO] [stderr]   Downloaded petgraph v0.4.13
[INFO] [stderr]   Downloaded csv v1.0.5
[INFO] [stderr]   Downloaded csv-core v0.1.5
[INFO] [stderr]   Downloaded redox_syscall v0.1.44
[INFO] [stderr]   Downloaded fixedbitset v0.1.9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f28acbba50fdad927461b7abc352cf1a41bfcf973968bc7d0f8ffde7cc9b1a5f
[INFO] running `Command { std: "docker" "start" "-a" "f28acbba50fdad927461b7abc352cf1a41bfcf973968bc7d0f8ffde7cc9b1a5f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f28acbba50fdad927461b7abc352cf1a41bfcf973968bc7d0f8ffde7cc9b1a5f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f28acbba50fdad927461b7abc352cf1a41bfcf973968bc7d0f8ffde7cc9b1a5f", kill_on_drop: false }`
[INFO] [stdout] f28acbba50fdad927461b7abc352cf1a41bfcf973968bc7d0f8ffde7cc9b1a5f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 205989dfe9ee91532950e3cbbca8cf1c02e8bdfebbd31e0a41770a0fd1c875d1
[INFO] running `Command { std: "docker" "start" "-a" "205989dfe9ee91532950e3cbbca8cf1c02e8bdfebbd31e0a41770a0fd1c875d1", kill_on_drop: false }`
[INFO] [stderr]    Compiling cfg-if v0.1.6
[INFO] [stderr]    Compiling serde v1.0.83
[INFO] [stderr]    Compiling syn v1.0.11
[INFO] [stderr]    Compiling ordermap v0.3.5
[INFO] [stderr]    Compiling fixedbitset v0.1.9
[INFO] [stderr]    Compiling memchr v2.1.2
[INFO] [stderr]    Compiling atty v0.2.13
[INFO] [stderr]    Compiling thread-id v3.3.0
[INFO] [stderr]    Compiling log v0.4.6
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]    Compiling simple-logging v2.0.2
[INFO] [stderr]    Compiling petgraph v0.4.13
[INFO] [stderr]    Compiling csv-core v0.1.5
[INFO] [stderr]    Compiling serde_derive v1.0.103
[INFO] [stderr]    Compiling csv v1.0.5
[INFO] [stderr]    Compiling family_tree v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `HashSet`
[INFO] [stdout]  --> src/main.rs:7:33
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::collections::{HashMap, HashSet};
[INFO] [stdout]   |                                 ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `IndexMut`
[INFO] [stdout]  --> src/main.rs:8:23
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::ops::{Index, IndexMut};
[INFO] [stdout]   |                       ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cmp::max`
[INFO] [stdout]  --> src/main.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::cmp::max;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Display`, `Error`, `Formatter`
[INFO] [stdout]   --> src/main.rs:10:16
[INFO] [stdout]    |
[INFO] [stdout] 10 | use std::fmt::{Display, Formatter, Error};
[INFO] [stdout]    |                ^^^^^^^  ^^^^^^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `ReaderBuilder`, `StringRecord`, `Trim`, `Writer`
[INFO] [stdout]   --> src/main.rs:13:11
[INFO] [stdout]    |
[INFO] [stdout] 13 | use csv::{StringRecord, Trim, ReaderBuilder, WriterBuilder, Writer};
[INFO] [stdout]    |           ^^^^^^^^^^^^  ^^^^  ^^^^^^^^^^^^^                 ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `StringRecord`, `WriterBuilder`
[INFO] [stdout]  --> src/person.rs:4:11
[INFO] [stdout]   |
[INFO] [stdout] 4 | use csv::{StringRecord, Trim, ReaderBuilder, WriterBuilder, Writer};
[INFO] [stdout]   |           ^^^^^^^^^^^^                       ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `IntoNodeReferences`
[INFO] [stdout]  --> src/graph.rs:6:28
[INFO] [stdout]   |
[INFO] [stdout] 6 | use petgraph::visit::{Dfs, IntoNodeReferences};
[INFO] [stdout]   |                            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Config`, `Dot`
[INFO] [stdout]  --> src/graph.rs:7:21
[INFO] [stdout]   |
[INFO] [stdout] 7 | use petgraph::dot::{Dot, Config};
[INFO] [stdout]   |                     ^^^  ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Index`
[INFO] [stdout]  --> src/main.rs:8:16
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::ops::{Index, IndexMut};
[INFO] [stdout]   |                ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Serialize`
[INFO] [stdout]  --> src/person.rs:5:13
[INFO] [stdout]   |
[INFO] [stdout] 5 | use serde::{Serialize, Deserialize};
[INFO] [stdout]   |             ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Deserialize`
[INFO] [stdout]  --> src/person.rs:5:24
[INFO] [stdout]   |
[INFO] [stdout] 5 | use serde::{Serialize, Deserialize};
[INFO] [stdout]   |                        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 13.51s
[INFO] running `Command { std: "docker" "inspect" "205989dfe9ee91532950e3cbbca8cf1c02e8bdfebbd31e0a41770a0fd1c875d1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "205989dfe9ee91532950e3cbbca8cf1c02e8bdfebbd31e0a41770a0fd1c875d1", kill_on_drop: false }`
[INFO] [stdout] 205989dfe9ee91532950e3cbbca8cf1c02e8bdfebbd31e0a41770a0fd1c875d1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 502396afca2b6d0da4bfd68c83abda9734bffa93a853fd7ec1dc6bd9bb5754bd
[INFO] running `Command { std: "docker" "start" "-a" "502396afca2b6d0da4bfd68c83abda9734bffa93a853fd7ec1dc6bd9bb5754bd", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling family_tree v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `HashSet`
[INFO] [stdout]  --> src/main.rs:7:33
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::collections::{HashMap, HashSet};
[INFO] [stdout]   |                                 ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `IndexMut`
[INFO] [stdout]  --> src/main.rs:8:23
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::ops::{Index, IndexMut};
[INFO] [stdout]   |                       ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cmp::max`
[INFO] [stdout]  --> src/main.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::cmp::max;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Display`, `Error`, `Formatter`
[INFO] [stdout]   --> src/main.rs:10:16
[INFO] [stdout]    |
[INFO] [stdout] 10 | use std::fmt::{Display, Formatter, Error};
[INFO] [stdout]    |                ^^^^^^^  ^^^^^^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `ReaderBuilder`, `StringRecord`, `Trim`, `Writer`
[INFO] [stdout]   --> src/main.rs:13:11
[INFO] [stdout]    |
[INFO] [stdout] 13 | use csv::{StringRecord, Trim, ReaderBuilder, WriterBuilder, Writer};
[INFO] [stdout]    |           ^^^^^^^^^^^^  ^^^^  ^^^^^^^^^^^^^                 ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `StringRecord`, `WriterBuilder`
[INFO] [stdout]  --> src/person.rs:4:11
[INFO] [stdout]   |
[INFO] [stdout] 4 | use csv::{StringRecord, Trim, ReaderBuilder, WriterBuilder, Writer};
[INFO] [stdout]   |           ^^^^^^^^^^^^                       ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `IntoNodeReferences`
[INFO] [stdout]  --> src/graph.rs:6:28
[INFO] [stdout]   |
[INFO] [stdout] 6 | use petgraph::visit::{Dfs, IntoNodeReferences};
[INFO] [stdout]   |                            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Config`, `Dot`
[INFO] [stdout]  --> src/graph.rs:7:21
[INFO] [stdout]   |
[INFO] [stdout] 7 | use petgraph::dot::{Dot, Config};
[INFO] [stdout]   |                     ^^^  ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Index`
[INFO] [stdout]  --> src/main.rs:8:16
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::ops::{Index, IndexMut};
[INFO] [stdout]   |                ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Serialize`
[INFO] [stdout]  --> src/person.rs:5:13
[INFO] [stdout]   |
[INFO] [stdout] 5 | use serde::{Serialize, Deserialize};
[INFO] [stdout]   |             ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Deserialize`
[INFO] [stdout]  --> src/person.rs:5:24
[INFO] [stdout]   |
[INFO] [stdout] 5 | use serde::{Serialize, Deserialize};
[INFO] [stdout]   |                        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.32s
[INFO] running `Command { std: "docker" "inspect" "502396afca2b6d0da4bfd68c83abda9734bffa93a853fd7ec1dc6bd9bb5754bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "502396afca2b6d0da4bfd68c83abda9734bffa93a853fd7ec1dc6bd9bb5754bd", kill_on_drop: false }`
[INFO] [stdout] 502396afca2b6d0da4bfd68c83abda9734bffa93a853fd7ec1dc6bd9bb5754bd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] e269bfead390aaaf443f3bfe05840e97fb0e59ab7f2fc66425d3c352c58b60b8
[INFO] running `Command { std: "docker" "start" "-a" "e269bfead390aaaf443f3bfe05840e97fb0e59ab7f2fc66425d3c352c58b60b8", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `HashSet`
[INFO] [stderr]  --> src/main.rs:7:33
[INFO] [stderr]   |
[INFO] [stderr] 7 | use std::collections::{HashMap, HashSet};
[INFO] [stderr]   |                                 ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `IndexMut`
[INFO] [stderr]  --> src/main.rs:8:23
[INFO] [stderr]   |
[INFO] [stderr] 8 | use std::ops::{Index, IndexMut};
[INFO] [stderr]   |                       ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::cmp::max`
[INFO] [stderr]  --> src/main.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 | use std::cmp::max;
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Display`, `Error`, `Formatter`
[INFO] [stderr]   --> src/main.rs:10:16
[INFO] [stderr]    |
[INFO] [stderr] 10 | use std::fmt::{Display, Formatter, Error};
[INFO] [stderr]    |                ^^^^^^^  ^^^^^^^^^  ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `ReaderBuilder`, `StringRecord`, `Trim`, `Writer`
[INFO] [stderr]   --> src/main.rs:13:11
[INFO] [stderr]    |
[INFO] [stderr] 13 | use csv::{StringRecord, Trim, ReaderBuilder, WriterBuilder, Writer};
[INFO] [stderr]    |           ^^^^^^^^^^^^  ^^^^  ^^^^^^^^^^^^^                 ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `StringRecord`, `WriterBuilder`
[INFO] [stderr]  --> src/person.rs:4:11
[INFO] [stderr]   |
[INFO] [stderr] 4 | use csv::{StringRecord, Trim, ReaderBuilder, WriterBuilder, Writer};
[INFO] [stderr]   |           ^^^^^^^^^^^^                       ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `IntoNodeReferences`
[INFO] [stderr]  --> src/graph.rs:6:28
[INFO] [stderr]   |
[INFO] [stderr] 6 | use petgraph::visit::{Dfs, IntoNodeReferences};
[INFO] [stderr]   |                            ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Config`, `Dot`
[INFO] [stderr]  --> src/graph.rs:7:21
[INFO] [stderr]   |
[INFO] [stderr] 7 | use petgraph::dot::{Dot, Config};
[INFO] [stderr]   |                     ^^^  ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Index`
[INFO] [stderr]  --> src/main.rs:8:16
[INFO] [stderr]   |
[INFO] [stderr] 8 | use std::ops::{Index, IndexMut};
[INFO] [stderr]   |                ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Serialize`
[INFO] [stderr]  --> src/person.rs:5:13
[INFO] [stderr]   |
[INFO] [stderr] 5 | use serde::{Serialize, Deserialize};
[INFO] [stderr]   |             ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Deserialize`
[INFO] [stderr]  --> src/person.rs:5:24
[INFO] [stderr]   |
[INFO] [stderr] 5 | use serde::{Serialize, Deserialize};
[INFO] [stderr]   |                        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 11 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/family_tree-21db95811e222f3c)
[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] running `Command { std: "docker" "inspect" "e269bfead390aaaf443f3bfe05840e97fb0e59ab7f2fc66425d3c352c58b60b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e269bfead390aaaf443f3bfe05840e97fb0e59ab7f2fc66425d3c352c58b60b8", kill_on_drop: false }`
[INFO] [stdout] e269bfead390aaaf443f3bfe05840e97fb0e59ab7f2fc66425d3c352c58b60b8