[INFO] cloning repository https://github.com/jracollins/serde-memory-leak-example
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jracollins/serde-memory-leak-example" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjracollins%2Fserde-memory-leak-example", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjracollins%2Fserde-memory-leak-example'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c7dacf0ca69fb33a0c6382f96b0a6dcf36e089d1
[INFO] testing jracollins/serde-memory-leak-example against beta-2022-04-10 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjracollins%2Fserde-memory-leak-example" "/workspace/builds/worker-26/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-26/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jracollins/serde-memory-leak-example on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jracollins/serde-memory-leak-example
[INFO] finished tweaking git repo https://github.com/jracollins/serde-memory-leak-example
[INFO] tweaked toml for git repo https://github.com/jracollins/serde-memory-leak-example written to /workspace/builds/worker-26/source/Cargo.toml
[INFO] crate git repo https://github.com/jracollins/serde-memory-leak-example already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 46061e80d973c485040461ff9fca63dc8d4174073a0f8bc2553b3f13d5590a7a
[INFO] running `Command { std: "docker" "start" "-a" "46061e80d973c485040461ff9fca63dc8d4174073a0f8bc2553b3f13d5590a7a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "46061e80d973c485040461ff9fca63dc8d4174073a0f8bc2553b3f13d5590a7a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "46061e80d973c485040461ff9fca63dc8d4174073a0f8bc2553b3f13d5590a7a", kill_on_drop: false }`
[INFO] [stdout] 46061e80d973c485040461ff9fca63dc8d4174073a0f8bc2553b3f13d5590a7a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d90988875376eeddd5478d2108465736da0147367afe9f08812d80f1849018f5
[INFO] running `Command { std: "docker" "start" "-a" "d90988875376eeddd5478d2108465736da0147367afe9f08812d80f1849018f5", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.30
[INFO] [stderr]    Compiling syn v1.0.80
[INFO] [stderr]    Compiling serde_derive v1.0.130
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]    Compiling serde_json v1.0.68
[INFO] [stderr]    Compiling itoa v0.4.8
[INFO] [stderr]    Compiling fastrand v1.5.0
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]    Compiling memory-leak v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 13.96s
[INFO] running `Command { std: "docker" "inspect" "d90988875376eeddd5478d2108465736da0147367afe9f08812d80f1849018f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d90988875376eeddd5478d2108465736da0147367afe9f08812d80f1849018f5", kill_on_drop: false }`
[INFO] [stdout] d90988875376eeddd5478d2108465736da0147367afe9f08812d80f1849018f5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bcf8fdc731f0e3e5513432c9efda25c4266fd35f802ceee00e0580bf08836aac
[INFO] running `Command { std: "docker" "start" "-a" "bcf8fdc731f0e3e5513432c9efda25c4266fd35f802ceee00e0580bf08836aac", kill_on_drop: false }`
[INFO] [stderr]    Compiling memory-leak v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `ExampleEnum`, `ExampleStructB`
[INFO] [stdout]  --> examples/read_deserialize_struct_multiple.rs:1:19
[INFO] [stdout]   |
[INFO] [stdout] 1 | use memory_leak::{ExampleEnum, ExampleStructA, ExampleStructB};
[INFO] [stdout]   |                   ^^^^^^^^^^^                  ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `ExampleEnum`, `ExampleStructB`
[INFO] [stdout]  --> examples/read_deserialize_struct.rs:1:19
[INFO] [stdout]   |
[INFO] [stdout] 1 | use memory_leak::{ExampleEnum, ExampleStructA, ExampleStructB};
[INFO] [stdout]   |                   ^^^^^^^^^^^                  ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Path`
[INFO] [stdout]  --> examples/read_deserialize_struct_multiple.rs:3:17
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::path::{Path, PathBuf};
[INFO] [stdout]   |                 ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `file_as_string` is never read
[INFO] [stdout]   --> examples/read_string.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 |     file_as_string = String::from("");
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `PathBuf`
[INFO] [stdout]  --> examples/write_data_enum.rs:3:23
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::path::{Path, PathBuf};
[INFO] [stdout]   |                       ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `thread`, `time::Duration`
[INFO] [stdout]  --> examples/write_data_enum.rs:4:11
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::{thread, time::Duration};
[INFO] [stdout]   |           ^^^^^^  ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `ExampleStructA`, `ExampleStructB`
[INFO] [stdout]  --> examples/read_deserialize_enum.rs:1:32
[INFO] [stdout]   |
[INFO] [stdout] 1 | use memory_leak::{ExampleEnum, ExampleStructA, ExampleStructB};
[INFO] [stdout]   |                                ^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `s` is never read
[INFO] [stdout]   --> examples/read_deserialize_struct.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     s = String::from("");
[INFO] [stdout]    |     ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `s` is never read
[INFO] [stdout]   --> examples/read_deserialize_struct.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 29 |     s = String::from("");
[INFO] [stdout]    |     ^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `s` is never read
[INFO] [stdout]   --> examples/read_deserialize_enum.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     s = String::from("");
[INFO] [stdout]    |     ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ExampleEnum`
[INFO] [stdout]  --> examples/write_data_struct.rs:1:19
[INFO] [stdout]   |
[INFO] [stdout] 1 | use memory_leak::{ExampleEnum, ExampleStructA};
[INFO] [stdout]   |                   ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `PathBuf`
[INFO] [stdout]  --> examples/write_data_struct.rs:3:23
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::path::{Path, PathBuf};
[INFO] [stdout]   |                       ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `thread`, `time::Duration`
[INFO] [stdout]  --> examples/write_data_struct.rs:4:11
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::{thread, time::Duration};
[INFO] [stdout]   |           ^^^^^^  ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> examples/read_deserialize_struct_multiple.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let mut s = read_to_string(path).unwrap();
[INFO] [stdout]   |         ----^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ExampleEnum`
[INFO] [stdout]  --> examples/write_data_struct_multiple.rs:1:19
[INFO] [stdout]   |
[INFO] [stdout] 1 | use memory_leak::{ExampleEnum, ExampleStructA};
[INFO] [stdout]   |                   ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> examples/read_deserialize_struct_multiple.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let mut file: Vec<ExampleStructA> = serde_json::from_str(&s).unwrap();
[INFO] [stdout]   |         ----^^^^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `PathBuf`
[INFO] [stdout]  --> examples/write_data_struct_multiple.rs:3:23
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::path::{Path, PathBuf};
[INFO] [stdout]   |                       ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `thread`, `time::Duration`
[INFO] [stdout]  --> examples/write_data_struct_multiple.rs:4:11
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::{thread, time::Duration};
[INFO] [stdout]   |           ^^^^^^  ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> examples/write_data_struct_multiple.rs:19:13
[INFO] [stdout]    |
[INFO] [stdout] 19 |         for i in 0..random_item_count {
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.52s
[INFO] [stderr]   Executable unittests src/lib.rs (/opt/rustwide/target/debug/deps/memory_leak-e428b95d04c6a1f4)
[INFO] running `Command { std: "docker" "inspect" "bcf8fdc731f0e3e5513432c9efda25c4266fd35f802ceee00e0580bf08836aac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bcf8fdc731f0e3e5513432c9efda25c4266fd35f802ceee00e0580bf08836aac", kill_on_drop: false }`
[INFO] [stdout] bcf8fdc731f0e3e5513432c9efda25c4266fd35f802ceee00e0580bf08836aac
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 590ba2863432e921fa0b83f2d1a71216b7ea69254e3be7461a4846c9b74054d5
[INFO] running `Command { std: "docker" "start" "-a" "590ba2863432e921fa0b83f2d1a71216b7ea69254e3be7461a4846c9b74054d5", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `PathBuf`
[INFO] [stderr]  --> examples/write_data_enum.rs:3:23
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::path::{Path, PathBuf};
[INFO] [stderr]   |                       ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `thread`, `time::Duration`
[INFO] [stderr]  --> examples/write_data_enum.rs:4:11
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::{thread, time::Duration};
[INFO] [stderr]   |           ^^^^^^  ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `ExampleStructA`, `ExampleStructB`
[INFO] [stderr]  --> examples/read_deserialize_enum.rs:1:32
[INFO] [stderr]   |
[INFO] [stderr] 1 | use memory_leak::{ExampleEnum, ExampleStructA, ExampleStructB};
[INFO] [stderr]   |                                ^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `s` is never read
[INFO] [stderr]   --> examples/read_deserialize_enum.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 |     s = String::from("");
[INFO] [stderr]    |     ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `ExampleEnum`, `ExampleStructB`
[INFO] [stderr]  --> examples/read_deserialize_struct_multiple.rs:1:19
[INFO] [stderr]   |
[INFO] [stderr] 1 | use memory_leak::{ExampleEnum, ExampleStructA, ExampleStructB};
[INFO] [stderr]   |                   ^^^^^^^^^^^                  ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Path`
[INFO] [stderr]  --> examples/read_deserialize_struct_multiple.rs:3:17
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::path::{Path, PathBuf};
[INFO] [stderr]   |                 ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> examples/read_deserialize_struct_multiple.rs:8:9
[INFO] [stderr]   |
[INFO] [stderr] 8 |     let mut s = read_to_string(path).unwrap();
[INFO] [stderr]   |         ----^
[INFO] [stderr]   |         |
[INFO] [stderr]   |         help: remove this `mut`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> examples/read_deserialize_struct_multiple.rs:9:9
[INFO] [stderr]   |
[INFO] [stderr] 9 |     let mut file: Vec<ExampleStructA> = serde_json::from_str(&s).unwrap();
[INFO] [stderr]   |         ----^^^^
[INFO] [stderr]   |         |
[INFO] [stderr]   |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `ExampleEnum`, `ExampleStructB`
[INFO] [stderr]  --> examples/read_deserialize_struct.rs:1:19
[INFO] [stderr]   |
[INFO] [stderr] 1 | use memory_leak::{ExampleEnum, ExampleStructA, ExampleStructB};
[INFO] [stderr]   |                   ^^^^^^^^^^^                  ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `s` is never read
[INFO] [stderr]   --> examples/read_deserialize_struct.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 |     s = String::from("");
[INFO] [stderr]    |     ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `s` is never read
[INFO] [stderr]   --> examples/read_deserialize_struct.rs:29:5
[INFO] [stderr]    |
[INFO] [stderr] 29 |     s = String::from("");
[INFO] [stderr]    |     ^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `file_as_string` is never read
[INFO] [stderr]   --> examples/read_string.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 |     file_as_string = String::from("");
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `ExampleEnum`
[INFO] [stderr]  --> examples/write_data_struct_multiple.rs:1:19
[INFO] [stderr]   |
[INFO] [stderr] 1 | use memory_leak::{ExampleEnum, ExampleStructA};
[INFO] [stderr]   |                   ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `PathBuf`
[INFO] [stderr]  --> examples/write_data_struct_multiple.rs:3:23
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::path::{Path, PathBuf};
[INFO] [stderr]   |                       ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `thread`, `time::Duration`
[INFO] [stderr]  --> examples/write_data_struct_multiple.rs:4:11
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::{thread, time::Duration};
[INFO] [stderr]   |           ^^^^^^  ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]   --> examples/write_data_struct_multiple.rs:19:13
[INFO] [stderr]    |
[INFO] [stderr] 19 |         for i in 0..random_item_count {
[INFO] [stderr]    |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `ExampleEnum`
[INFO] [stderr]  --> examples/write_data_struct.rs:1:19
[INFO] [stderr]   |
[INFO] [stderr] 1 | use memory_leak::{ExampleEnum, ExampleStructA};
[INFO] [stderr]   |                   ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `PathBuf`
[INFO] [stderr]  --> examples/write_data_struct.rs:3:23
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::path::{Path, PathBuf};
[INFO] [stderr]   |                       ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `thread`, `time::Duration`
[INFO] [stderr]  --> examples/write_data_struct.rs:4:11
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::{thread, time::Duration};
[INFO] [stderr]   |           ^^^^^^  ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `memory-leak` (example "write_data_enum") generated 2 warnings
[INFO] [stderr] warning: `memory-leak` (example "read_deserialize_enum") generated 2 warnings
[INFO] [stderr] warning: `memory-leak` (example "read_deserialize_struct_multiple") generated 4 warnings
[INFO] [stderr] warning: `memory-leak` (example "read_deserialize_struct") generated 3 warnings
[INFO] [stderr] warning: `memory-leak` (example "read_string") generated 1 warning
[INFO] [stderr] warning: `memory-leak` (example "write_data_struct_multiple") generated 4 warnings
[INFO] [stderr] warning: `memory-leak` (example "write_data_struct") generated 3 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/memory_leak-e428b95d04c6a1f4)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests memory-leak
[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" "590ba2863432e921fa0b83f2d1a71216b7ea69254e3be7461a4846c9b74054d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "590ba2863432e921fa0b83f2d1a71216b7ea69254e3be7461a4846c9b74054d5", kill_on_drop: false }`
[INFO] [stdout] 590ba2863432e921fa0b83f2d1a71216b7ea69254e3be7461a4846c9b74054d5