[INFO] cloning repository https://github.com/nekomaru0510/vpg
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/nekomaru0510/vpg" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnekomaru0510%2Fvpg", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnekomaru0510%2Fvpg'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3c4620649c60d4821c87ce5eb59ad5200525c814
[INFO] checking nekomaru0510/vpg against try#012cd62c9add58ab3910e44c137d87db3ab70f61 for pr-155915
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnekomaru0510%2Fvpg" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/nekomaru0510/vpg
[INFO] finished tweaking git repo https://github.com/nekomaru0510/vpg
[INFO] tweaked toml for git repo https://github.com/nekomaru0510/vpg written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/nekomaru0510/vpg on toolchain 012cd62c9add58ab3910e44c137d87db3ab70f61
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/nekomaru0510/vpg 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" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3730ff6deb29954ba3986b269f87e5b1915cdc5295e8709ecd2e62e1010fdcdf
[INFO] running `Command { std: "docker" "start" "-a" "3730ff6deb29954ba3986b269f87e5b1915cdc5295e8709ecd2e62e1010fdcdf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3730ff6deb29954ba3986b269f87e5b1915cdc5295e8709ecd2e62e1010fdcdf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3730ff6deb29954ba3986b269f87e5b1915cdc5295e8709ecd2e62e1010fdcdf", kill_on_drop: false }`
[INFO] [stdout] 3730ff6deb29954ba3986b269f87e5b1915cdc5295e8709ecd2e62e1010fdcdf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ed48593df4f0840bc6acb5b8f1bc8581215dc5b3f082e96ba0df3a6e239183dd
[INFO] running `Command { std: "docker" "start" "-a" "ed48593df4f0840bc6acb5b8f1bc8581215dc5b3f082e96ba0df3a6e239183dd", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.93
[INFO] [stderr]     Checking winnow v0.6.24
[INFO] [stderr]     Checking indexmap v2.7.1
[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stderr]    Compiling quote v1.0.38
[INFO] [stderr]    Compiling syn v2.0.96
[INFO] [stderr]    Compiling serde_derive v1.0.217
[INFO] [stderr]     Checking serde v1.0.217
[INFO] [stderr]     Checking serde_spanned v0.6.8
[INFO] [stderr]     Checking toml_datetime v0.6.8
[INFO] [stderr]     Checking toml_edit v0.22.22
[INFO] [stderr]     Checking toml v0.8.19
[INFO] [stderr]     Checking vpg v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `Deserialize` and `Serialize`
[INFO] [stdout]  --> src/format/toml.rs:4:13
[INFO] [stdout]   |
[INFO] [stdout] 4 | use serde::{Deserialize, Serialize};
[INFO] [stdout]   |             ^^^^^^^^^^^  ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Deserialize` and `Serialize`
[INFO] [stdout]  --> src/format/toml.rs:4:13
[INFO] [stdout]   |
[INFO] [stdout] 4 | use serde::{Deserialize, Serialize};
[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: `ContainerConfig`
[INFO] [stdout]  --> src/format/mod.rs:4:34
[INFO] [stdout]   |
[INFO] [stdout] 4 | use crate::param::{SystemConfig, ContainerConfig};
[INFO] [stdout]   |                                  ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ContainerConfig`
[INFO] [stdout]  --> src/generator.rs:7:34
[INFO] [stdout]   |
[INFO] [stdout] 7 | use crate::param::{SystemConfig, ContainerConfig};
[INFO] [stdout]   |                                  ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `ContainerConfig` and `SystemConfig`
[INFO] [stdout]   --> src/main.rs:14:20
[INFO] [stdout]    |
[INFO] [stdout] 14 | use crate::param::{SystemConfig, ContainerConfig};
[INFO] [stdout]    |                    ^^^^^^^^^^^^  ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ContainerConfig`
[INFO] [stdout]  --> src/format/mod.rs:4:34
[INFO] [stdout]   |
[INFO] [stdout] 4 | use crate::param::{SystemConfig, ContainerConfig};
[INFO] [stdout]   |                                  ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ContainerConfig`
[INFO] [stdout]  --> src/generator.rs:7:34
[INFO] [stdout]   |
[INFO] [stdout] 7 | use crate::param::{SystemConfig, ContainerConfig};
[INFO] [stdout]   |                                  ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `ContainerConfig` and `SystemConfig`
[INFO] [stdout]   --> src/main.rs:14:20
[INFO] [stdout]    |
[INFO] [stdout] 14 | use crate::param::{SystemConfig, ContainerConfig};
[INFO] [stdout]    |                    ^^^^^^^^^^^^  ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/format/toml.rs:47:9
[INFO] [stdout]    |
[INFO] [stdout] 47 |     let mut num_of_cpus: u64 = 0;
[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: `output`
[INFO] [stdout]   --> src/generator.rs:38:9
[INFO] [stdout]    |
[INFO] [stdout] 38 |     let output = Command::new("cargo")
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_output`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `system`
[INFO] [stdout]   --> src/generator.rs:48:35
[INFO] [stdout]    |
[INFO] [stdout] 48 | fn generate_source(path: &String, system: &SystemConfig) {
[INFO] [stdout]    |                                   ^^^^^^ help: if this is intentional, prefix it with an underscore: `_system`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `system`
[INFO] [stdout]   --> src/generator.rs:57:37
[INFO] [stdout]    |
[INFO] [stdout] 57 | fn modify_cargo_toml(path: &String, system: &SystemConfig) {
[INFO] [stdout]    |                                     ^^^^^^ help: if this is intentional, prefix it with an underscore: `_system`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `system`
[INFO] [stdout]   --> src/generator.rs:61:40
[INFO] [stdout]    |
[INFO] [stdout] 61 | fn generate_config_toml(path: &String, system: &SystemConfig) {
[INFO] [stdout]    |                                        ^^^^^^ help: if this is intentional, prefix it with an underscore: `_system`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `qemu_support`
[INFO] [stdout]   --> src/main.rs:60:9
[INFO] [stdout]    |
[INFO] [stdout] 60 |     let qemu_support = matches.opt_present("q");
[INFO] [stdout]    |         ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_qemu_support`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `KeyNotFoundError` is never constructed
[INFO] [stdout]   --> src/format/mod.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub enum FormatError {
[INFO] [stdout]    |          ----------- variant in this enum
[INFO] [stdout] 20 |     ParseError(String),
[INFO] [stdout] 21 |     KeyNotFoundError(String),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `FormatError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `text` and `table` are never read
[INFO] [stdout]   --> src/format/toml.rs:9:5
[INFO] [stdout]    |
[INFO] [stdout]  8 | pub struct Toml {
[INFO] [stdout]    |            ---- fields in this struct
[INFO] [stdout]  9 |     text: String,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 10 |     table: Option<toml::Table>
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `version`, `num_of_cpus`, `num_of_containers`, and `containers` are never read
[INFO] [stdout]  --> src/param.rs:3:9
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub struct SystemConfig {
[INFO] [stdout]   |            ------------ fields in this struct
[INFO] [stdout] 3 |     pub version: f32,
[INFO] [stdout]   |         ^^^^^^^
[INFO] [stdout] 4 |     pub num_of_cpus: u64,
[INFO] [stdout]   |         ^^^^^^^^^^^
[INFO] [stdout] 5 |     pub num_of_containers: u64,
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 6 |     pub containers: Vec<ContainerConfig>,
[INFO] [stdout]   |         ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `SystemConfig` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `id`, `num_of_cpus`, `bsp`, and `cores` are never read
[INFO] [stdout]   --> src/param.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct ContainerConfig {
[INFO] [stdout]    |            --------------- fields in this struct
[INFO] [stdout] 11 |     pub id: u64,
[INFO] [stdout]    |         ^^
[INFO] [stdout] 12 |     pub num_of_cpus: u64,
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout] 13 |     pub bsp: u64,
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 14 |     pub cores: u64,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ContainerConfig` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `GeneratorError` is never used
[INFO] [stdout]   --> src/generator.rs:90:10
[INFO] [stdout]    |
[INFO] [stdout] 90 | pub enum GeneratorError {
[INFO] [stdout]    |          ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/format/toml.rs:47:9
[INFO] [stdout]    |
[INFO] [stdout] 47 |     let mut num_of_cpus: u64 = 0;
[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: `output`
[INFO] [stdout]   --> src/generator.rs:38:9
[INFO] [stdout]    |
[INFO] [stdout] 38 |     let output = Command::new("cargo")
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_output`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `system`
[INFO] [stdout]   --> src/generator.rs:48:35
[INFO] [stdout]    |
[INFO] [stdout] 48 | fn generate_source(path: &String, system: &SystemConfig) {
[INFO] [stdout]    |                                   ^^^^^^ help: if this is intentional, prefix it with an underscore: `_system`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `system`
[INFO] [stdout]   --> src/generator.rs:57:37
[INFO] [stdout]    |
[INFO] [stdout] 57 | fn modify_cargo_toml(path: &String, system: &SystemConfig) {
[INFO] [stdout]    |                                     ^^^^^^ help: if this is intentional, prefix it with an underscore: `_system`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `system`
[INFO] [stdout]   --> src/generator.rs:61:40
[INFO] [stdout]    |
[INFO] [stdout] 61 | fn generate_config_toml(path: &String, system: &SystemConfig) {
[INFO] [stdout]    |                                        ^^^^^^ help: if this is intentional, prefix it with an underscore: `_system`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `qemu_support`
[INFO] [stdout]   --> src/main.rs:60:9
[INFO] [stdout]    |
[INFO] [stdout] 60 |     let qemu_support = matches.opt_present("q");
[INFO] [stdout]    |         ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_qemu_support`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `KeyNotFoundError` is never constructed
[INFO] [stdout]   --> src/format/mod.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub enum FormatError {
[INFO] [stdout]    |          ----------- variant in this enum
[INFO] [stdout] 20 |     ParseError(String),
[INFO] [stdout] 21 |     KeyNotFoundError(String),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `FormatError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `text` and `table` are never read
[INFO] [stdout]   --> src/format/toml.rs:9:5
[INFO] [stdout]    |
[INFO] [stdout]  8 | pub struct Toml {
[INFO] [stdout]    |            ---- fields in this struct
[INFO] [stdout]  9 |     text: String,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 10 |     table: Option<toml::Table>
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `version`, `num_of_cpus`, `num_of_containers`, and `containers` are never read
[INFO] [stdout]  --> src/param.rs:3:9
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub struct SystemConfig {
[INFO] [stdout]   |            ------------ fields in this struct
[INFO] [stdout] 3 |     pub version: f32,
[INFO] [stdout]   |         ^^^^^^^
[INFO] [stdout] 4 |     pub num_of_cpus: u64,
[INFO] [stdout]   |         ^^^^^^^^^^^
[INFO] [stdout] 5 |     pub num_of_containers: u64,
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 6 |     pub containers: Vec<ContainerConfig>,
[INFO] [stdout]   |         ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `SystemConfig` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `id`, `num_of_cpus`, `bsp`, and `cores` are never read
[INFO] [stdout]   --> src/param.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct ContainerConfig {
[INFO] [stdout]    |            --------------- fields in this struct
[INFO] [stdout] 11 |     pub id: u64,
[INFO] [stdout]    |         ^^
[INFO] [stdout] 12 |     pub num_of_cpus: u64,
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout] 13 |     pub bsp: u64,
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 14 |     pub cores: u64,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ContainerConfig` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `GeneratorError` is never used
[INFO] [stdout]   --> src/generator.rs:90:10
[INFO] [stdout]    |
[INFO] [stdout] 90 | pub enum GeneratorError {
[INFO] [stdout]    |          ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/generator.rs:58:5
[INFO] [stdout]    |
[INFO] [stdout] 58 |     append_to_file(&(path.to_string()+"/Cargo.toml"), "violet = { path = '../../violet' }");
[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] 58 |     let _ = append_to_file(&(path.to_string()+"/Cargo.toml"), "violet = { path = '../../violet' }");
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/generator.rs:58:5
[INFO] [stdout]    |
[INFO] [stdout] 58 |     append_to_file(&(path.to_string()+"/Cargo.toml"), "violet = { path = '../../violet' }");
[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] 58 |     let _ = append_to_file(&(path.to_string()+"/Cargo.toml"), "violet = { path = '../../violet' }");
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 12.87s
[INFO] running `Command { std: "docker" "inspect" "ed48593df4f0840bc6acb5b8f1bc8581215dc5b3f082e96ba0df3a6e239183dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ed48593df4f0840bc6acb5b8f1bc8581215dc5b3f082e96ba0df3a6e239183dd", kill_on_drop: false }`
[INFO] [stdout] ed48593df4f0840bc6acb5b8f1bc8581215dc5b3f082e96ba0df3a6e239183dd
