[INFO] cloning repository https://github.com/docula-io/docula
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/docula-io/docula" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdocula-io%2Fdocula", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdocula-io%2Fdocula'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c4b2cfad0fec1dbdeaadbd37ac34424c880fd2ed
[INFO] building docula-io/docula against master#70591dc15db32941fe3595fdbf98e58d6975f95e for pr-127731
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdocula-io%2Fdocula" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/docula-io/docula on toolchain 70591dc15db32941fe3595fdbf98e58d6975f95e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+70591dc15db32941fe3595fdbf98e58d6975f95e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/docula-io/docula
[INFO] finished tweaking git repo https://github.com/docula-io/docula
[INFO] tweaked toml for git repo https://github.com/docula-io/docula written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/docula-io/docula 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" "+70591dc15db32941fe3595fdbf98e58d6975f95e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[ERROR] this task or one of its parent failed!
[ERROR] no output for 300 seconds
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.
[INFO] building docula-io/docula against try#7587ff3622fbec0abf6ac551eab5226f22f5d958 for pr-127731
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdocula-io%2Fdocula" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/docula-io/docula on toolchain 7587ff3622fbec0abf6ac551eab5226f22f5d958
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7587ff3622fbec0abf6ac551eab5226f22f5d958" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/docula-io/docula
[INFO] finished tweaking git repo https://github.com/docula-io/docula
[INFO] tweaked toml for git repo https://github.com/docula-io/docula written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/docula-io/docula 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" "+7587ff3622fbec0abf6ac551eab5226f22f5d958" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] building docula-io/docula against try#7587ff3622fbec0abf6ac551eab5226f22f5d958 for pr-127731
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdocula-io%2Fdocula" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/docula-io/docula on toolchain 7587ff3622fbec0abf6ac551eab5226f22f5d958
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7587ff3622fbec0abf6ac551eab5226f22f5d958" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/docula-io/docula
[INFO] finished tweaking git repo https://github.com/docula-io/docula
[INFO] tweaked toml for git repo https://github.com/docula-io/docula written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/docula-io/docula 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" "+7587ff3622fbec0abf6ac551eab5226f22f5d958" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tabled_derive v0.4.0
[INFO] [stderr]   Downloaded papergrid v0.5.1
[INFO] [stderr]   Downloaded ordinal v0.3.2
[INFO] [stderr]   Downloaded serde_yaml v0.9.6
[INFO] [stderr]   Downloaded ansi-str v0.3.0
[INFO] [stderr]   Downloaded tabled v0.8.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+7587ff3622fbec0abf6ac551eab5226f22f5d958" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 772058a9c8e4567754854df3fd069e1c16e0f2c3ba8040155efab080b9e64c4b
[INFO] running `Command { std: "docker" "start" "-a" "772058a9c8e4567754854df3fd069e1c16e0f2c3ba8040155efab080b9e64c4b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "772058a9c8e4567754854df3fd069e1c16e0f2c3ba8040155efab080b9e64c4b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "772058a9c8e4567754854df3fd069e1c16e0f2c3ba8040155efab080b9e64c4b", kill_on_drop: false }`
[INFO] [stdout] 772058a9c8e4567754854df3fd069e1c16e0f2c3ba8040155efab080b9e64c4b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+7587ff3622fbec0abf6ac551eab5226f22f5d958" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 89d31f17c1716fe065ee837fc50db2b88bce0561ff30f3e7270098646e548fe8
[INFO] running `Command { std: "docker" "start" "-a" "89d31f17c1716fe065ee837fc50db2b88bce0561ff30f3e7270098646e548fe8", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.43
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]    Compiling unicode-ident v1.0.3
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling syn v1.0.99
[INFO] [stderr]    Compiling libc v0.2.127
[INFO] [stderr]    Compiling once_cell v1.13.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.11
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling minimal-lexical v0.2.1
[INFO] [stderr]    Compiling rayon-core v1.9.3
[INFO] [stderr]    Compiling utf8parse v0.2.0
[INFO] [stderr]    Compiling serde_derive v1.0.143
[INFO] [stderr]    Compiling heck v0.4.0
[INFO] [stderr]    Compiling arrayvec v0.5.2
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling tinyvec_macros v0.1.0
[INFO] [stderr]    Compiling tinyvec v1.6.0
[INFO] [stderr]    Compiling hashbrown v0.12.3
[INFO] [stderr]    Compiling serde v1.0.143
[INFO] [stderr]    Compiling matches v0.1.9
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling unicode-width v0.1.9
[INFO] [stderr]    Compiling percent-encoding v2.1.0
[INFO] [stderr]    Compiling os_str_bytes v6.2.0
[INFO] [stderr]    Compiling regex-syntax v0.6.27
[INFO] [stderr]    Compiling bytecount v0.6.3
[INFO] [stderr]    Compiling unicode-bidi v0.3.8
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling unsafe-libyaml v0.2.2
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.10
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling indexmap v1.9.1
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling crossbeam-channel v0.5.6
[INFO] [stderr]    Compiling rayon v1.5.3
[INFO] [stderr]    Compiling clap_lex v0.2.4
[INFO] [stderr]    Compiling form_urlencoded v1.0.1
[INFO] [stderr]    Compiling nom v7.1.1
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]    Compiling num_cpus v1.13.1
[INFO] [stderr]    Compiling crossbeam-deque v0.8.2
[INFO] [stderr]    Compiling time v0.1.44
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling unicode-normalization v0.1.21
[INFO] [stderr]    Compiling vte_generate_state_changes v0.1.1
[INFO] [stderr]    Compiling termcolor v1.1.3
[INFO] [stderr]    Compiling ryu v1.0.11
[INFO] [stderr]    Compiling textwrap v0.15.0
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling either v1.7.0
[INFO] [stderr]    Compiling vte v0.10.1
[INFO] [stderr]    Compiling iana-time-zone v0.1.44
[INFO] [stderr]    Compiling itoa v1.0.3
[INFO] [stderr]    Compiling strsim v0.10.0
[INFO] [stderr]    Compiling ansi_term v0.12.1
[INFO] [stderr]    Compiling idna v0.2.3
[INFO] [stderr]    Compiling chrono v0.4.22
[INFO] [stderr]    Compiling ordinal v0.3.2
[INFO] [stderr]    Compiling url v2.2.2
[INFO] [stderr]    Compiling strip-ansi-escapes v0.1.1
[INFO] [stderr]    Compiling regex v1.6.0
[INFO] [stderr]    Compiling ansitok v0.1.0
[INFO] [stderr]    Compiling ansi-str v0.3.0
[INFO] [stderr]    Compiling papergrid v0.5.1
[INFO] [stderr]    Compiling Inflector v0.11.4
[INFO] [stderr]    Compiling tabled_derive v0.4.0
[INFO] [stderr]    Compiling clap_derive v3.2.17
[INFO] [stderr]    Compiling tabled v0.8.0
[INFO] [stderr]    Compiling clap v3.2.17
[INFO] [stderr]    Compiling serde_yaml v0.9.6
[INFO] [stderr]    Compiling docula-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `Handler` is never constructed
[INFO] [stdout]   --> src/markdown/handler/lint.rs:26:12
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub struct Handler {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `scan_dir` and `lint_file` are never used
[INFO] [stdout]   --> src/markdown/handler/lint.rs:44:8
[INFO] [stdout]    |
[INFO] [stdout] 30 | impl Handler {
[INFO] [stdout]    | ------------ methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 44 |     fn scan_dir(&self) -> Result<(), Box<dyn std::error::Error>> {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 48 |     fn lint_file(&self, path: &std::path::PathBuf) -> Result<(), Box<dyn std::error::Error>> {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&str` instead of cloning the inner type
[INFO] [stdout]    --> src/markdown/parser/lexer.rs:107:19
[INFO] [stdout]     |
[INFO] [stdout] 107 |         .map(|x| x.clone().to_string())
[INFO] [stdout]     |                   ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(suspicious_double_ref_op)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&str` instead of cloning the inner type
[INFO] [stdout]    --> src/markdown/parser/lexer.rs:145:19
[INFO] [stdout]     |
[INFO] [stdout] 145 |         .map(|x| x.clone().to_string())
[INFO] [stdout]     |                   ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.49s
[INFO] running `Command { std: "docker" "inspect" "89d31f17c1716fe065ee837fc50db2b88bce0561ff30f3e7270098646e548fe8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "89d31f17c1716fe065ee837fc50db2b88bce0561ff30f3e7270098646e548fe8", kill_on_drop: false }`
[INFO] [stdout] 89d31f17c1716fe065ee837fc50db2b88bce0561ff30f3e7270098646e548fe8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+7587ff3622fbec0abf6ac551eab5226f22f5d958" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 50628ee6378412aed236502158b7d94e71fdec37dde27ec61da06041b624f3a6
[INFO] running `Command { std: "docker" "start" "-a" "50628ee6378412aed236502158b7d94e71fdec37dde27ec61da06041b624f3a6", kill_on_drop: false }`
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling regex-automata v0.1.10
[INFO] [stderr]    Compiling predicates-core v1.0.3
[INFO] [stderr]    Compiling same-file v1.0.6
[INFO] [stderr]    Compiling doc-comment v0.3.3
[INFO] [stderr]    Compiling itertools v0.10.3
[INFO] [stderr]    Compiling thread_local v1.1.4
[INFO] [stderr]    Compiling difflib v0.4.0
[INFO] [stderr]    Compiling termtree v0.2.4
[INFO] [stderr]    Compiling remove_dir_all v0.5.3
[INFO] [stderr]    Compiling fastrand v1.8.0
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling wait-timeout v0.2.0
[INFO] [stdout] warning: struct `Handler` is never constructed
[INFO] [stdout]   --> src/markdown/handler/lint.rs:26:12
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub struct Handler {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `scan_dir` and `lint_file` are never used
[INFO] [stdout]   --> src/markdown/handler/lint.rs:44:8
[INFO] [stdout]    |
[INFO] [stdout] 30 | impl Handler {
[INFO] [stdout]    | ------------ methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 44 |     fn scan_dir(&self) -> Result<(), Box<dyn std::error::Error>> {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 48 |     fn lint_file(&self, path: &std::path::PathBuf) -> Result<(), Box<dyn std::error::Error>> {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&str` instead of cloning the inner type
[INFO] [stdout]    --> src/markdown/parser/lexer.rs:107:19
[INFO] [stdout]     |
[INFO] [stdout] 107 |         .map(|x| x.clone().to_string())
[INFO] [stdout]     |                   ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(suspicious_double_ref_op)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&str` instead of cloning the inner type
[INFO] [stdout]    --> src/markdown/parser/lexer.rs:145:19
[INFO] [stdout]     |
[INFO] [stdout] 145 |         .map(|x| x.clone().to_string())
[INFO] [stdout]     |                   ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling walkdir v2.3.2
[INFO] [stderr]    Compiling predicates-tree v1.0.5
[INFO] [stderr]    Compiling tempfile v3.3.0
[INFO] [stderr]    Compiling bstr v0.2.17
[INFO] [stderr]    Compiling globset v0.4.9
[INFO] [stderr]    Compiling tempdir v0.3.7
[INFO] [stderr]    Compiling ignore v0.4.18
[INFO] [stderr]    Compiling predicates v2.1.1
[INFO] [stderr]    Compiling globwalk v0.8.1
[INFO] [stderr]    Compiling assert_cmd v2.0.4
[INFO] [stderr]    Compiling assert_fs v1.0.7
[INFO] [stderr]    Compiling docula-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `Handler` is never constructed
[INFO] [stdout]   --> src/markdown/handler/lint.rs:26:12
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub struct Handler {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `scan_dir` and `lint_file` are never used
[INFO] [stdout]   --> src/markdown/handler/lint.rs:44:8
[INFO] [stdout]    |
[INFO] [stdout] 30 | impl Handler {
[INFO] [stdout]    | ------------ methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 44 |     fn scan_dir(&self) -> Result<(), Box<dyn std::error::Error>> {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 48 |     fn lint_file(&self, path: &std::path::PathBuf) -> Result<(), Box<dyn std::error::Error>> {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&str` instead of cloning the inner type
[INFO] [stdout]    --> src/markdown/parser/lexer.rs:107:19
[INFO] [stdout]     |
[INFO] [stdout] 107 |         .map(|x| x.clone().to_string())
[INFO] [stdout]     |                   ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(suspicious_double_ref_op)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&str` instead of cloning the inner type
[INFO] [stdout]    --> src/markdown/parser/lexer.rs:145:19
[INFO] [stdout]     |
[INFO] [stdout] 145 |         .map(|x| x.clone().to_string())
[INFO] [stdout]     |                   ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 2.44s
[INFO] running `Command { std: "docker" "inspect" "50628ee6378412aed236502158b7d94e71fdec37dde27ec61da06041b624f3a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "50628ee6378412aed236502158b7d94e71fdec37dde27ec61da06041b624f3a6", kill_on_drop: false }`
[INFO] [stdout] 50628ee6378412aed236502158b7d94e71fdec37dde27ec61da06041b624f3a6