[INFO] cloning repository https://github.com/jtianling/toc-auto-add
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jtianling/toc-auto-add" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjtianling%2Ftoc-auto-add", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjtianling%2Ftoc-auto-add'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 95c05965d9d58cb6207521e97d5ad0fa428d3131
[INFO] linting jtianling/toc-auto-add/95c05965d9d58cb6207521e97d5ad0fa428d3131 against nightly for clippy-nonminimal_bool-denied
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjtianling%2Ftoc-auto-add" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/jtianling/toc-auto-add
[INFO] finished tweaking git repo https://github.com/jtianling/toc-auto-add
[INFO] tweaked toml for git repo https://github.com/jtianling/toc-auto-add written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/jtianling/toc-auto-add on toolchain nightly
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+nightly" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/jtianling/toc-auto-add 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" "+nightly" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: `package.edition` is unspecified, defaulting to `2015` while the latest is `2024`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded aho-corasick v0.3.2
[INFO] [stderr]   Downloaded memchr v0.1.6
[INFO] [stderr]   Downloaded regex v0.1.41
[INFO] [stderr]   Downloaded regex-syntax v0.2.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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" "+nightly" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 19bd6ed3ab7c840e405499bc2e6256b09b6dd74357a88fa0e923052984e2f594
[INFO] running `Command { std: "docker" "start" "-a" "19bd6ed3ab7c840e405499bc2e6256b09b6dd74357a88fa0e923052984e2f594", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "19bd6ed3ab7c840e405499bc2e6256b09b6dd74357a88fa0e923052984e2f594", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "19bd6ed3ab7c840e405499bc2e6256b09b6dd74357a88fa0e923052984e2f594", kill_on_drop: false }`
[INFO] [stdout] 19bd6ed3ab7c840e405499bc2e6256b09b6dd74357a88fa0e923052984e2f594
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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" "+nightly" "clippy" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 441c85fcedf997cbf1da28cd83179b1342e540931844a5c7651c2173d5ba7fa3
[INFO] running `Command { std: "docker" "start" "-a" "441c85fcedf997cbf1da28cd83179b1342e540931844a5c7651c2173d5ba7fa3", kill_on_drop: false }`
[INFO] [stderr] warning: `package.edition` is unspecified, defaulting to `2015` while the latest is `2024`
[INFO] [stderr]     Checking memchr v0.1.6
[INFO] [stderr]     Checking regex-syntax v0.2.2
[INFO] [stderr]     Checking aho-corasick v0.3.2
[INFO] [stderr]     Checking regex v0.1.41
[INFO] [stderr]     Checking toc-auto-add v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/main.rs:157:3
[INFO] [stdout]     |
[INFO] [stdout] 157 |   try!(file.read_to_string(&mut file_content));
[INFO] [stdout]     |   ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/main.rs:166:3
[INFO] [stdout]     |
[INFO] [stdout] 166 |   try!(file.write_all(file_content_with_toc.as_bytes()));
[INFO] [stdout]     |   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/main.rs:167:3
[INFO] [stdout]     |
[INFO] [stdout] 167 |   try!(file.sync_all());
[INFO] [stdout]     |   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/main.rs:155:18
[INFO] [stdout]     |
[INFO] [stdout] 155 |   let mut file = try!(OpenOptions::new().read(true).open(filename));
[INFO] [stdout]     |                  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/main.rs:165:10
[INFO] [stdout]     |
[INFO] [stdout] 165 |   file = try!(File::create(filename));
[INFO] [stdout]     |          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/main.rs:157:3
[INFO] [stdout]     |
[INFO] [stdout] 157 |   try!(file.read_to_string(&mut file_content));
[INFO] [stdout]     |   ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/main.rs:166:3
[INFO] [stdout]     |
[INFO] [stdout] 166 |   try!(file.write_all(file_content_with_toc.as_bytes()));
[INFO] [stdout]     |   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/main.rs:167:3
[INFO] [stdout]     |
[INFO] [stdout] 167 |   try!(file.sync_all());
[INFO] [stdout]     |   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/main.rs:155:18
[INFO] [stdout]     |
[INFO] [stdout] 155 |   let mut file = try!(OpenOptions::new().read(true).open(filename));
[INFO] [stdout]     |                  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/main.rs:165:10
[INFO] [stdout]     |
[INFO] [stdout] 165 |   file = try!(File::create(filename));
[INFO] [stdout]     |          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calling `push_str()` using a single-character string literal
[INFO] [stdout]   --> src/main.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 |     sub_title_string.push_str("(");
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `push` with a character literal: `sub_title_string.push('(')`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_add_str
[INFO] [stdout]    = note: `#[warn(clippy::single_char_add_str)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calling `push_str()` using a single-character string literal
[INFO] [stdout]   --> src/main.rs:23:7
[INFO] [stdout]    |
[INFO] [stdout] 23 |       sub_title_string.push_str(",");
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `push` with a character literal: `sub_title_string.push(',')`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_add_str
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calling `push_str()` using a single-character string literal
[INFO] [stdout]   --> src/main.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 26 |     sub_title_string.push_str(")");
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `push` with a character literal: `sub_title_string.push(')')`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_add_str
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/main.rs:79:3
[INFO] [stdout]    |
[INFO] [stdout] 79 |   return file_titles;
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout]    = note: `#[warn(clippy::needless_return)]` on by default
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 79 -   return file_titles;
[INFO] [stdout] 79 +   file_titles
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/main.rs:97:3
[INFO] [stdout]    |
[INFO] [stdout] 97 |   return deleted_multiple_title.to_lowercase();
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 97 -   return deleted_multiple_title.to_lowercase();
[INFO] [stdout] 97 +   deleted_multiple_title.to_lowercase()
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this expression creates a reference which is immediately dereferenced by the compiler
[INFO] [stdout]   --> src/main.rs:86:49
[INFO] [stdout]    |
[INFO] [stdout] 86 |   let trimed_title = trim_last_unuse_re.replace(&title, "");
[INFO] [stdout]    |                                                 ^^^^^^ help: change this to: `title`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrow
[INFO] [stdout]    = note: `#[warn(clippy::needless_borrow)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/main.rs:115:3
[INFO] [stdout]     |
[INFO] [stdout] 115 |   return toc;
[INFO] [stdout]     |   ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 115 -   return toc;
[INFO] [stdout] 115 +   toc
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of an assign operation
[INFO] [stdout]    --> src/main.rs:103:3
[INFO] [stdout]     |
[INFO] [stdout] 103 |   toc = toc + "**目录**:\n\n";
[INFO] [stdout]     |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `toc += "**目录**:\n\n"`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stdout]     = note: `#[warn(clippy::assign_op_pattern)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this expression creates a reference which is immediately dereferenced by the compiler
[INFO] [stdout]    --> src/main.rs:109:28
[INFO] [stdout]     |
[INFO] [stdout] 109 |       toc = toc + " * [" + &(sub_title) + "](#" + &get_escaped_title_link(&sub_title) + ")\n";
[INFO] [stdout]     |                            ^^^^^^^^^^^^ help: change this to: `(sub_title)`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrow
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this expression creates a reference which is immediately dereferenced by the compiler
[INFO] [stdout]    --> src/main.rs:109:75
[INFO] [stdout]     |
[INFO] [stdout] 109 |       toc = toc + " * [" + &(sub_title) + "](#" + &get_escaped_title_link(&sub_title) + ")\n";
[INFO] [stdout]     |                                                                           ^^^^^^^^^^ help: change this to: `sub_title`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrow
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of an assign operation
[INFO] [stdout]    --> src/main.rs:113:3
[INFO] [stdout]     |
[INFO] [stdout] 113 |   toc = toc + "\n";
[INFO] [stdout]     |   ^^^^^^^^^^^^^^^^ help: replace it with: `toc += "\n"`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/main.rs:151:3
[INFO] [stdout]     |
[INFO] [stdout] 151 |   return file_content.to_string();
[INFO] [stdout]     |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 151 -   return file_content.to_string();
[INFO] [stdout] 151 +   file_content.to_string()
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/main.rs:173:3
[INFO] [stdout]     |
[INFO] [stdout] 173 |   return env::args().skip(1).collect();
[INFO] [stdout]     |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 173 -   return env::args().skip(1).collect();
[INFO] [stdout] 173 +   env::args().skip(1).collect()
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calling `push_str()` using a single-character string literal
[INFO] [stdout]   --> src/main.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 |     sub_title_string.push_str("(");
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `push` with a character literal: `sub_title_string.push('(')`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_add_str
[INFO] [stdout]    = note: `#[warn(clippy::single_char_add_str)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calling `push_str()` using a single-character string literal
[INFO] [stdout]   --> src/main.rs:23:7
[INFO] [stdout]    |
[INFO] [stdout] 23 |       sub_title_string.push_str(",");
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `push` with a character literal: `sub_title_string.push(',')`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_add_str
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calling `push_str()` using a single-character string literal
[INFO] [stdout]   --> src/main.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 26 |     sub_title_string.push_str(")");
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `push` with a character literal: `sub_title_string.push(')')`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_add_str
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/main.rs:79:3
[INFO] [stdout]    |
[INFO] [stdout] 79 |   return file_titles;
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout]    = note: `#[warn(clippy::needless_return)]` on by default
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 79 -   return file_titles;
[INFO] [stdout] 79 +   file_titles
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/main.rs:97:3
[INFO] [stdout]    |
[INFO] [stdout] 97 |   return deleted_multiple_title.to_lowercase();
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 97 -   return deleted_multiple_title.to_lowercase();
[INFO] [stdout] 97 +   deleted_multiple_title.to_lowercase()
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this expression creates a reference which is immediately dereferenced by the compiler
[INFO] [stdout]   --> src/main.rs:86:49
[INFO] [stdout]    |
[INFO] [stdout] 86 |   let trimed_title = trim_last_unuse_re.replace(&title, "");
[INFO] [stdout]    |                                                 ^^^^^^ help: change this to: `title`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrow
[INFO] [stdout]    = note: `#[warn(clippy::needless_borrow)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/main.rs:115:3
[INFO] [stdout]     |
[INFO] [stdout] 115 |   return toc;
[INFO] [stdout]     |   ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 115 -   return toc;
[INFO] [stdout] 115 +   toc
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of an assign operation
[INFO] [stdout]    --> src/main.rs:103:3
[INFO] [stdout]     |
[INFO] [stdout] 103 |   toc = toc + "**目录**:\n\n";
[INFO] [stdout]     |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `toc += "**目录**:\n\n"`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stdout]     = note: `#[warn(clippy::assign_op_pattern)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this expression creates a reference which is immediately dereferenced by the compiler
[INFO] [stdout]    --> src/main.rs:109:28
[INFO] [stdout]     |
[INFO] [stdout] 109 |       toc = toc + " * [" + &(sub_title) + "](#" + &get_escaped_title_link(&sub_title) + ")\n";
[INFO] [stdout]     |                            ^^^^^^^^^^^^ help: change this to: `(sub_title)`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrow
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this expression creates a reference which is immediately dereferenced by the compiler
[INFO] [stdout]    --> src/main.rs:109:75
[INFO] [stdout]     |
[INFO] [stdout] 109 |       toc = toc + " * [" + &(sub_title) + "](#" + &get_escaped_title_link(&sub_title) + ")\n";
[INFO] [stdout]     |                                                                           ^^^^^^^^^^ help: change this to: `sub_title`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrow
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of an assign operation
[INFO] [stdout]    --> src/main.rs:113:3
[INFO] [stdout]     |
[INFO] [stdout] 113 |   toc = toc + "\n";
[INFO] [stdout]     |   ^^^^^^^^^^^^^^^^ help: replace it with: `toc += "\n"`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/main.rs:151:3
[INFO] [stdout]     |
[INFO] [stdout] 151 |   return file_content.to_string();
[INFO] [stdout]     |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 151 -   return file_content.to_string();
[INFO] [stdout] 151 +   file_content.to_string()
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/main.rs:173:3
[INFO] [stdout]     |
[INFO] [stdout] 173 |   return env::args().skip(1).collect();
[INFO] [stdout]     |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 173 -   return env::args().skip(1).collect();
[INFO] [stdout] 173 +   env::args().skip(1).collect()
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.95s
[INFO] running `Command { std: "docker" "inspect" "441c85fcedf997cbf1da28cd83179b1342e540931844a5c7651c2173d5ba7fa3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "441c85fcedf997cbf1da28cd83179b1342e540931844a5c7651c2173d5ba7fa3", kill_on_drop: false }`
[INFO] [stdout] 441c85fcedf997cbf1da28cd83179b1342e540931844a5c7651c2173d5ba7fa3