[INFO] fetching crate return_crusher 0.1.4...
[INFO] testing return_crusher-0.1.4 against master#cdb45c87e2cd43495379f7e867e3cc15dcee9f93 for pr-145838-1
[INFO] extracting crate return_crusher 0.1.4 into /workspace/builds/worker-5-tc1/source
[INFO] started tweaking crates.io crate return_crusher 0.1.4
[INFO] finished tweaking crates.io crate return_crusher 0.1.4
[INFO] tweaked toml for crates.io crate return_crusher 0.1.4 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate return_crusher 0.1.4 on toolchain cdb45c87e2cd43495379f7e867e3cc15dcee9f93
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate return_crusher 0.1.4 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" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tree-sitter-language v0.1.0
[INFO] [stderr]   Downloaded tree-sitter v0.23.0
[INFO] [stderr]   Downloaded tree-sitter-c v0.23.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9e437b8345b35656f1a5299e3311f91ddcf24fee1c79a93a100853035ec6a77b
[INFO] running `Command { std: "docker" "start" "-a" "9e437b8345b35656f1a5299e3311f91ddcf24fee1c79a93a100853035ec6a77b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9e437b8345b35656f1a5299e3311f91ddcf24fee1c79a93a100853035ec6a77b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9e437b8345b35656f1a5299e3311f91ddcf24fee1c79a93a100853035ec6a77b", kill_on_drop: false }`
[INFO] [stdout] 9e437b8345b35656f1a5299e3311f91ddcf24fee1c79a93a100853035ec6a77b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b63971b37edd1107690cf9b7f5b0971ca797d66eb8283ae742fa016ba8d05864
[INFO] running `Command { std: "docker" "start" "-a" "b63971b37edd1107690cf9b7f5b0971ca797d66eb8283ae742fa016ba8d05864", kill_on_drop: false }`
[INFO] [stderr]    Compiling cc v1.1.15
[INFO] [stderr]    Compiling regex-syntax v0.8.4
[INFO] [stderr]    Compiling tree-sitter-language v0.1.0
[INFO] [stderr]    Compiling tree-sitter-c v0.23.0
[INFO] [stderr]    Compiling tree-sitter v0.23.0
[INFO] [stderr]    Compiling regex-automata v0.4.7
[INFO] [stderr]    Compiling regex v1.10.6
[INFO] [stderr]    Compiling return_crusher v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `core::error`
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use core::error;
[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: `fmt::format`, `io::Write`, and `process::Command`
[INFO] [stdout]  --> src/main.rs:3:25
[INFO] [stdout]   |
[INFO] [stdout] 3 |   collections::HashMap, fmt::format, fs::File, io::Read, io::Write, path::Path, process::Command,
[INFO] [stdout]   |                         ^^^^^^^^^^^                      ^^^^^^^^^              ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]     --> src/main.rs:1139:6
[INFO] [stdout]      |
[INFO] [stdout] 1139 |   if (node.kind() == "compound_statement") {
[INFO] [stdout]      |      ^                                   ^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout] 1139 -   if (node.kind() == "compound_statement") {
[INFO] [stdout] 1139 +   if node.kind() == "compound_statement" {
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]    --> src/main.rs:648:3
[INFO] [stdout]     |
[INFO] [stdout] 643 | /   return format!(
[INFO] [stdout] 644 | |     "({{ {} }})",
[INFO] [stdout] 645 | |     source[node.start_byte() as usize..node.end_byte() as usize].to_string()
[INFO] [stdout] 646 | |   );
[INFO] [stdout]     | |___- any code following this expression is unreachable
[INFO] [stdout] 647 |     // 获取switch的条件表达式
[INFO] [stdout] 648 |     let condition = get_switch_condition(node, source);
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `result` is never read
[INFO] [stdout]    --> src/main.rs:657:13
[INFO] [stdout]     |
[INFO] [stdout] 657 |     let mut result = String::new();
[INFO] [stdout]     |             ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `current_expr` is never read
[INFO] [stdout]    --> src/main.rs:668:15
[INFO] [stdout]     |
[INFO] [stdout] 668 |       let mut current_expr = String::new();
[INFO] [stdout]     |               ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `source`
[INFO] [stdout]    --> src/main.rs:722:43
[INFO] [stdout]     |
[INFO] [stdout] 722 | fn get_case_body<'a>(case_node: Node<'a>, source: &'a str) -> Node<'a> {
[INFO] [stdout]     |                                           ^^^^^^ help: if this is intentional, prefix it with an underscore: `_source`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_function_name` is never used
[INFO] [stdout]    --> src/main.rs:559:4
[INFO] [stdout]     |
[INFO] [stdout] 559 | fn get_function_name<'a>(func_node: Node<'a>, source: &'a str) -> &'a str {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `contains_loop` is never used
[INFO] [stdout]    --> src/main.rs:570:4
[INFO] [stdout]     |
[INFO] [stdout] 570 | fn contains_loop(node: Node) -> bool {
[INFO] [stdout]     |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_case_body` is never used
[INFO] [stdout]    --> src/main.rs:722:4
[INFO] [stdout]     |
[INFO] [stdout] 722 | fn get_case_body<'a>(case_node: Node<'a>, source: &'a str) -> Node<'a> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `transform_compound_statement` is never used
[INFO] [stdout]     --> src/main.rs:1138:4
[INFO] [stdout]      |
[INFO] [stdout] 1138 | fn transform_compound_statement(node: Node, source: &str) -> String {
[INFO] [stdout]      |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.08s
[INFO] running `Command { std: "docker" "inspect" "b63971b37edd1107690cf9b7f5b0971ca797d66eb8283ae742fa016ba8d05864", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b63971b37edd1107690cf9b7f5b0971ca797d66eb8283ae742fa016ba8d05864", kill_on_drop: false }`
[INFO] [stdout] b63971b37edd1107690cf9b7f5b0971ca797d66eb8283ae742fa016ba8d05864
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1eb8de0a9e96c2bee97b16c2cd706ef0720e16b99d62da7b8a9ae637e0c19cb3
[INFO] running `Command { std: "docker" "start" "-a" "1eb8de0a9e96c2bee97b16c2cd706ef0720e16b99d62da7b8a9ae637e0c19cb3", kill_on_drop: false }`
[INFO] [stderr]    Compiling return_crusher v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `core::error`
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use core::error;
[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: `fmt::format`, `io::Write`, and `process::Command`
[INFO] [stdout]  --> src/main.rs:3:25
[INFO] [stdout]   |
[INFO] [stdout] 3 |   collections::HashMap, fmt::format, fs::File, io::Read, io::Write, path::Path, process::Command,
[INFO] [stdout]   |                         ^^^^^^^^^^^                      ^^^^^^^^^              ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]     --> src/main.rs:1139:6
[INFO] [stdout]      |
[INFO] [stdout] 1139 |   if (node.kind() == "compound_statement") {
[INFO] [stdout]      |      ^                                   ^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout] 1139 -   if (node.kind() == "compound_statement") {
[INFO] [stdout] 1139 +   if node.kind() == "compound_statement" {
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]    --> src/main.rs:648:3
[INFO] [stdout]     |
[INFO] [stdout] 643 | /   return format!(
[INFO] [stdout] 644 | |     "({{ {} }})",
[INFO] [stdout] 645 | |     source[node.start_byte() as usize..node.end_byte() as usize].to_string()
[INFO] [stdout] 646 | |   );
[INFO] [stdout]     | |___- any code following this expression is unreachable
[INFO] [stdout] 647 |     // 获取switch的条件表达式
[INFO] [stdout] 648 |     let condition = get_switch_condition(node, source);
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `result` is never read
[INFO] [stdout]    --> src/main.rs:657:13
[INFO] [stdout]     |
[INFO] [stdout] 657 |     let mut result = String::new();
[INFO] [stdout]     |             ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `current_expr` is never read
[INFO] [stdout]    --> src/main.rs:668:15
[INFO] [stdout]     |
[INFO] [stdout] 668 |       let mut current_expr = String::new();
[INFO] [stdout]     |               ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `source`
[INFO] [stdout]    --> src/main.rs:722:43
[INFO] [stdout]     |
[INFO] [stdout] 722 | fn get_case_body<'a>(case_node: Node<'a>, source: &'a str) -> Node<'a> {
[INFO] [stdout]     |                                           ^^^^^^ help: if this is intentional, prefix it with an underscore: `_source`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_function_name` is never used
[INFO] [stdout]    --> src/main.rs:559:4
[INFO] [stdout]     |
[INFO] [stdout] 559 | fn get_function_name<'a>(func_node: Node<'a>, source: &'a str) -> &'a str {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `contains_loop` is never used
[INFO] [stdout]    --> src/main.rs:570:4
[INFO] [stdout]     |
[INFO] [stdout] 570 | fn contains_loop(node: Node) -> bool {
[INFO] [stdout]     |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_case_body` is never used
[INFO] [stdout]    --> src/main.rs:722:4
[INFO] [stdout]     |
[INFO] [stdout] 722 | fn get_case_body<'a>(case_node: Node<'a>, source: &'a str) -> Node<'a> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `transform_compound_statement` is never used
[INFO] [stdout]     --> src/main.rs:1138:4
[INFO] [stdout]      |
[INFO] [stdout] 1138 | fn transform_compound_statement(node: Node, source: &str) -> String {
[INFO] [stdout]      |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.39s
[INFO] running `Command { std: "docker" "inspect" "1eb8de0a9e96c2bee97b16c2cd706ef0720e16b99d62da7b8a9ae637e0c19cb3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1eb8de0a9e96c2bee97b16c2cd706ef0720e16b99d62da7b8a9ae637e0c19cb3", kill_on_drop: false }`
[INFO] [stdout] 1eb8de0a9e96c2bee97b16c2cd706ef0720e16b99d62da7b8a9ae637e0c19cb3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] d5d51529930bd1a873bd2d3b546948a321dbc1c2cc1ee61aefe45a36cf40a85d
[INFO] running `Command { std: "docker" "start" "-a" "d5d51529930bd1a873bd2d3b546948a321dbc1c2cc1ee61aefe45a36cf40a85d", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `core::error`
[INFO] [stderr]  --> src/main.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use core::error;
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `fmt::format`, `io::Write`, and `process::Command`
[INFO] [stderr]  --> src/main.rs:3:25
[INFO] [stderr]   |
[INFO] [stderr] 3 |   collections::HashMap, fmt::format, fs::File, io::Read, io::Write, path::Path, process::Command,
[INFO] [stderr]   |                         ^^^^^^^^^^^                      ^^^^^^^^^              ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `if` condition
[INFO] [stderr]     --> src/main.rs:1139:6
[INFO] [stderr]      |
[INFO] [stderr] 1139 |   if (node.kind() == "compound_statement") {
[INFO] [stderr]      |      ^                                   ^
[INFO] [stderr]      |
[INFO] [stderr]      = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]      |
[INFO] [stderr] 1139 -   if (node.kind() == "compound_statement") {
[INFO] [stderr] 1139 +   if node.kind() == "compound_statement" {
[INFO] [stderr]      |
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable statement
[INFO] [stderr]    --> src/main.rs:648:3
[INFO] [stderr]     |
[INFO] [stderr] 643 | /   return format!(
[INFO] [stderr] 644 | |     "({{ {} }})",
[INFO] [stderr] 645 | |     source[node.start_byte() as usize..node.end_byte() as usize].to_string()
[INFO] [stderr] 646 | |   );
[INFO] [stderr]     | |___- any code following this expression is unreachable
[INFO] [stderr] 647 |     // 获取switch的条件表达式
[INFO] [stderr] 648 |     let condition = get_switch_condition(node, source);
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `result` is never read
[INFO] [stderr]    --> src/main.rs:657:13
[INFO] [stderr]     |
[INFO] [stderr] 657 |     let mut result = String::new();
[INFO] [stderr]     |             ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `current_expr` is never read
[INFO] [stderr]    --> src/main.rs:668:15
[INFO] [stderr]     |
[INFO] [stderr] 668 |       let mut current_expr = String::new();
[INFO] [stderr]     |               ^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `source`
[INFO] [stderr]    --> src/main.rs:722:43
[INFO] [stderr]     |
[INFO] [stderr] 722 | fn get_case_body<'a>(case_node: Node<'a>, source: &'a str) -> Node<'a> {
[INFO] [stderr]     |                                           ^^^^^^ help: if this is intentional, prefix it with an underscore: `_source`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `get_function_name` is never used
[INFO] [stderr]    --> src/main.rs:559:4
[INFO] [stderr]     |
[INFO] [stderr] 559 | fn get_function_name<'a>(func_node: Node<'a>, source: &'a str) -> &'a str {
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `contains_loop` is never used
[INFO] [stderr]    --> src/main.rs:570:4
[INFO] [stderr]     |
[INFO] [stderr] 570 | fn contains_loop(node: Node) -> bool {
[INFO] [stderr]     |    ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `get_case_body` is never used
[INFO] [stderr]    --> src/main.rs:722:4
[INFO] [stderr]     |
[INFO] [stderr] 722 | fn get_case_body<'a>(case_node: Node<'a>, source: &'a str) -> Node<'a> {
[INFO] [stderr]     |    ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `transform_compound_statement` is never used
[INFO] [stderr]     --> src/main.rs:1138:4
[INFO] [stderr]      |
[INFO] [stderr] 1138 | fn transform_compound_statement(node: Node, source: &str) -> String {
[INFO] [stderr]      |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `return_crusher` (bin "return_crusher" test) generated 11 warnings (run `cargo fix --bin "return_crusher" --tests` to apply 3 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/return_crusher-51099794501506e0)
[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" "d5d51529930bd1a873bd2d3b546948a321dbc1c2cc1ee61aefe45a36cf40a85d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d5d51529930bd1a873bd2d3b546948a321dbc1c2cc1ee61aefe45a36cf40a85d", kill_on_drop: false }`
[INFO] [stdout] d5d51529930bd1a873bd2d3b546948a321dbc1c2cc1ee61aefe45a36cf40a85d