[INFO] cloning repository https://github.com/Miniwoffer/mdbook-insigno
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Miniwoffer/mdbook-insigno" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMiniwoffer%2Fmdbook-insigno", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMiniwoffer%2Fmdbook-insigno'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 340658674b6398981b43db5b1a701b6728241a81
[INFO] testing Miniwoffer/mdbook-insigno against 1.54.0 for beta-1.55-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMiniwoffer%2Fmdbook-insigno" "/workspace/builds/worker-37/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-37/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Miniwoffer/mdbook-insigno on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Miniwoffer/mdbook-insigno
[INFO] finished tweaking git repo https://github.com/Miniwoffer/mdbook-insigno
[INFO] tweaked toml for git repo https://github.com/Miniwoffer/mdbook-insigno written to /workspace/builds/worker-37/source/Cargo.toml
[INFO] crate git repo https://github.com/Miniwoffer/mdbook-insigno already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ammonia v3.1.0
[INFO] [stderr]   Downloaded handlebars v3.0.1
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[INFO] [stderr]   Downloaded darling_macro v0.8.6
[INFO] [stderr]   Downloaded toml-query_derive v0.9.2
[INFO] [stderr]   Downloaded mdbook v0.3.7
[INFO] [stderr]   Downloaded gitignore v1.0.6
[INFO] [stderr]   Downloaded elasticlunr-rs v2.3.6
[INFO] [stderr]   Downloaded pulldown-cmark v0.6.1
[INFO] [stderr]   Downloaded darling_core v0.8.6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-37/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-37/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" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c87b15232c2ef95d18fcb10cda5e665fde07bae3ce5ddcf020ac17c1f4726531
[INFO] running `Command { std: "docker" "start" "-a" "c87b15232c2ef95d18fcb10cda5e665fde07bae3ce5ddcf020ac17c1f4726531", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c87b15232c2ef95d18fcb10cda5e665fde07bae3ce5ddcf020ac17c1f4726531", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c87b15232c2ef95d18fcb10cda5e665fde07bae3ce5ddcf020ac17c1f4726531", kill_on_drop: false }`
[INFO] [stdout] c87b15232c2ef95d18fcb10cda5e665fde07bae3ce5ddcf020ac17c1f4726531
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-37/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-37/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 519ff21ef34ca1c0272dff6f291753546bf6c44d644746a534b3322cca2bd5cf
[INFO] running `Command { std: "docker" "start" "-a" "519ff21ef34ca1c0272dff6f291753546bf6c44d644746a534b3322cca2bd5cf", kill_on_drop: false }`
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[INFO] [stderr]    Compiling serde_json v1.0.51
[INFO] [stderr]    Compiling string_cache v0.8.0
[INFO] [stderr]    Compiling toml v0.5.6
[INFO] [stderr]    Compiling darling_core v0.8.6
[INFO] [stderr]    Compiling iron v0.6.1
[INFO] [stderr]    Compiling mount v0.4.0
[INFO] [stderr]    Compiling staticfile v0.5.0
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[INFO] [stderr]    Compiling pest_generator v2.1.3
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[INFO] [stderr]    Compiling darling_macro v0.8.6
[INFO] [stderr]    Compiling darling v0.8.6
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[INFO] [stderr]    Compiling serde_derive v1.0.106
[INFO] [stderr]    Compiling html5ever v0.25.1
[INFO] [stderr]    Compiling pest_derive v2.1.0
[INFO] [stderr]    Compiling handlebars v3.0.1
[INFO] [stderr]    Compiling failure v0.1.7
[INFO] [stderr]    Compiling toml-query v0.9.2
[INFO] [stderr]    Compiling markup5ever v0.10.0
[INFO] [stderr]    Compiling elasticlunr-rs v2.3.6
[INFO] [stderr]    Compiling xml5ever v0.16.1
[INFO] [stderr]    Compiling markup5ever_rcdom v0.1.0
[INFO] [stderr]    Compiling ammonia v3.1.0
[INFO] [stderr]    Compiling mdbook v0.3.7
[INFO] [stderr]    Compiling mdbook-insigno v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `ArgMatches`
[INFO] [stdout]   --> src/bin/mdbook-insigno.rs:11:22
[INFO] [stdout]    |
[INFO] [stdout] 11 | use clap::{App, Arg, ArgMatches, SubCommand};
[INFO] [stdout]    |                      ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Stderr`, `Write`
[INFO] [stdout]   --> src/bin/mdbook-insigno.rs:14:15
[INFO] [stdout]    |
[INFO] [stdout] 14 | use std::io::{Write, Stderr};
[INFO] [stdout]    |               ^^^^^  ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs`
[INFO] [stdout]   --> src/bin/mdbook-insigno.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | use std::fs;
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Chapter`
[INFO] [stdout]   --> src/bin/mdbook-insigno.rs:17:34
[INFO] [stdout]    |
[INFO] [stdout] 17 | use mdbook::book::{Book,BookItem,Chapter};
[INFO] [stdout]    |                                  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Error`
[INFO] [stdout]   --> src/bin/mdbook-insigno.rs:18:22
[INFO] [stdout]    |
[INFO] [stdout] 18 | use mdbook::errors::{Error,Result};
[INFO] [stdout]    |                      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `uml_cmd`
[INFO] [stdout]   --> src/bin/mdbook-insigno.rs:42:9
[INFO] [stdout]    |
[INFO] [stdout] 42 |     let uml_cmd = match ctx.config.get("insigno-uml-cmd") {
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_uml_cmd`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `renderer`
[INFO] [stdout]   --> src/bin/mdbook-insigno.rs:79:33
[INFO] [stdout]    |
[INFO] [stdout] 79 |     fn supports_renderer(&self, renderer: &str) -> bool {
[INFO] [stdout]    |                                 ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_renderer`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/bin/mdbook-insigno.rs:130:13
[INFO] [stdout]     |
[INFO] [stdout] 130 |         let mut git = Command::new("/usr/bin/git")
[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: variable does not need to be mutable
[INFO] [stdout]    --> src/bin/mdbook-insigno.rs:137:13
[INFO] [stdout]     |
[INFO] [stdout] 137 |         let mut git = Command::new("/usr/bin/git")
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/bin/mdbook-insigno.rs:143:9
[INFO] [stdout]     |
[INFO] [stdout] 143 |     let mut git = Command::new("/root/.dotnet/tools/puml-gen")
[INFO] [stdout]     |         ----^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 38.75s
[INFO] running `Command { std: "docker" "inspect" "519ff21ef34ca1c0272dff6f291753546bf6c44d644746a534b3322cca2bd5cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "519ff21ef34ca1c0272dff6f291753546bf6c44d644746a534b3322cca2bd5cf", kill_on_drop: false }`
[INFO] [stdout] 519ff21ef34ca1c0272dff6f291753546bf6c44d644746a534b3322cca2bd5cf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-37/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-37/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 226a14919acf09671c2e9536ed55cf1a79c1ab31951264194b3b650d24bff38c
[INFO] running `Command { std: "docker" "start" "-a" "226a14919acf09671c2e9536ed55cf1a79c1ab31951264194b3b650d24bff38c", kill_on_drop: false }`
[INFO] [stderr]    Compiling mdbook-insigno v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `ArgMatches`
[INFO] [stdout]   --> src/bin/mdbook-insigno.rs:11:22
[INFO] [stdout]    |
[INFO] [stdout] 11 | use clap::{App, Arg, ArgMatches, SubCommand};
[INFO] [stdout]    |                      ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Stderr`, `Write`
[INFO] [stdout]   --> src/bin/mdbook-insigno.rs:14:15
[INFO] [stdout]    |
[INFO] [stdout] 14 | use std::io::{Write, Stderr};
[INFO] [stdout]    |               ^^^^^  ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs`
[INFO] [stdout]   --> src/bin/mdbook-insigno.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | use std::fs;
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Chapter`
[INFO] [stdout]   --> src/bin/mdbook-insigno.rs:17:34
[INFO] [stdout]    |
[INFO] [stdout] 17 | use mdbook::book::{Book,BookItem,Chapter};
[INFO] [stdout]    |                                  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Error`
[INFO] [stdout]   --> src/bin/mdbook-insigno.rs:18:22
[INFO] [stdout]    |
[INFO] [stdout] 18 | use mdbook::errors::{Error,Result};
[INFO] [stdout]    |                      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `uml_cmd`
[INFO] [stdout]   --> src/bin/mdbook-insigno.rs:42:9
[INFO] [stdout]    |
[INFO] [stdout] 42 |     let uml_cmd = match ctx.config.get("insigno-uml-cmd") {
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_uml_cmd`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `renderer`
[INFO] [stdout]   --> src/bin/mdbook-insigno.rs:79:33
[INFO] [stdout]    |
[INFO] [stdout] 79 |     fn supports_renderer(&self, renderer: &str) -> bool {
[INFO] [stdout]    |                                 ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_renderer`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/bin/mdbook-insigno.rs:130:13
[INFO] [stdout]     |
[INFO] [stdout] 130 |         let mut git = Command::new("/usr/bin/git")
[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: variable does not need to be mutable
[INFO] [stdout]    --> src/bin/mdbook-insigno.rs:137:13
[INFO] [stdout]     |
[INFO] [stdout] 137 |         let mut git = Command::new("/usr/bin/git")
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/bin/mdbook-insigno.rs:143:9
[INFO] [stdout]     |
[INFO] [stdout] 143 |     let mut git = Command::new("/root/.dotnet/tools/puml-gen")
[INFO] [stdout]     |         ----^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.72s
[INFO] running `Command { std: "docker" "inspect" "226a14919acf09671c2e9536ed55cf1a79c1ab31951264194b3b650d24bff38c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "226a14919acf09671c2e9536ed55cf1a79c1ab31951264194b3b650d24bff38c", kill_on_drop: false }`
[INFO] [stdout] 226a14919acf09671c2e9536ed55cf1a79c1ab31951264194b3b650d24bff38c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-37/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-37/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 794375fb036197582d9e7073ba4ad06aff281d44e123f261f27db7b30110a757
[INFO] running `Command { std: "docker" "start" "-a" "794375fb036197582d9e7073ba4ad06aff281d44e123f261f27db7b30110a757", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `ArgMatches`
[INFO] [stderr]   --> src/bin/mdbook-insigno.rs:11:22
[INFO] [stderr]    |
[INFO] [stderr] 11 | use clap::{App, Arg, ArgMatches, SubCommand};
[INFO] [stderr]    |                      ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Stderr`, `Write`
[INFO] [stderr]   --> src/bin/mdbook-insigno.rs:14:15
[INFO] [stderr]    |
[INFO] [stderr] 14 | use std::io::{Write, Stderr};
[INFO] [stderr]    |               ^^^^^  ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::fs`
[INFO] [stderr]   --> src/bin/mdbook-insigno.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 | use std::fs;
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Chapter`
[INFO] [stderr]   --> src/bin/mdbook-insigno.rs:17:34
[INFO] [stderr]    |
[INFO] [stderr] 17 | use mdbook::book::{Book,BookItem,Chapter};
[INFO] [stderr]    |                                  ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Error`
[INFO] [stderr]   --> src/bin/mdbook-insigno.rs:18:22
[INFO] [stderr]    |
[INFO] [stderr] 18 | use mdbook::errors::{Error,Result};
[INFO] [stderr]    |                      ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `uml_cmd`
[INFO] [stderr]   --> src/bin/mdbook-insigno.rs:42:9
[INFO] [stderr]    |
[INFO] [stderr] 42 |     let uml_cmd = match ctx.config.get("insigno-uml-cmd") {
[INFO] [stderr]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_uml_cmd`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `renderer`
[INFO] [stderr]   --> src/bin/mdbook-insigno.rs:79:33
[INFO] [stderr]    |
[INFO] [stderr] 79 |     fn supports_renderer(&self, renderer: &str) -> bool {
[INFO] [stderr]    |                                 ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_renderer`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/bin/mdbook-insigno.rs:130:13
[INFO] [stderr]     |
[INFO] [stderr] 130 |         let mut git = Command::new("/usr/bin/git")
[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]    --> src/bin/mdbook-insigno.rs:137:13
[INFO] [stderr]     |
[INFO] [stderr] 137 |         let mut git = Command::new("/usr/bin/git")
[INFO] [stderr]     |             ----^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/bin/mdbook-insigno.rs:143:9
[INFO] [stderr]     |
[INFO] [stderr] 143 |     let mut git = Command::new("/root/.dotnet/tools/puml-gen")
[INFO] [stderr]     |         ----^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: 10 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.09s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/mdbook_insigno-a82b95fa3799e792)
[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" "794375fb036197582d9e7073ba4ad06aff281d44e123f261f27db7b30110a757", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "794375fb036197582d9e7073ba4ad06aff281d44e123f261f27db7b30110a757", kill_on_drop: false }`
[INFO] [stdout] 794375fb036197582d9e7073ba4ad06aff281d44e123f261f27db7b30110a757
