[INFO] fetching crate burner 0.2.3...
[INFO] testing burner-0.2.3 against master#733b47ea4b1b86216f14ef56e49440c33933f230+rustflags=-Copt-level=3 for pr-138759
[INFO] extracting crate burner 0.2.3 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate burner 0.2.3
[INFO] finished tweaking crates.io crate burner 0.2.3
[INFO] tweaked toml for crates.io crate burner 0.2.3 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate burner 0.2.3 on toolchain 733b47ea4b1b86216f14ef56e49440c33933f230
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 11 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5f0d156be28f97843495dd4949eaea02598eafde78920a94f7d97f84358d783b
[INFO] running `Command { std: "docker" "start" "-a" "5f0d156be28f97843495dd4949eaea02598eafde78920a94f7d97f84358d783b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5f0d156be28f97843495dd4949eaea02598eafde78920a94f7d97f84358d783b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5f0d156be28f97843495dd4949eaea02598eafde78920a94f7d97f84358d783b", kill_on_drop: false }`
[INFO] [stdout] 5f0d156be28f97843495dd4949eaea02598eafde78920a94f7d97f84358d783b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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 -Copt-level=3" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 779beb59c0df21cb2c6771a639d1dbd0cfa301c8f49a79a20d50ea147525b5a0
[INFO] running `Command { std: "docker" "start" "-a" "779beb59c0df21cb2c6771a639d1dbd0cfa301c8f49a79a20d50ea147525b5a0", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde_core v1.0.228
[INFO] [stderr]    Compiling serde_json v1.0.145
[INFO] [stderr]    Compiling burner v0.2.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `serde_json::Value`
[INFO] [stdout]  --> src/route.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use serde_json::Value;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Value` and `json`
[INFO] [stdout]  --> src/server.rs:4:18
[INFO] [stdout]   |
[INFO] [stdout] 4 | use serde_json::{Value, json};
[INFO] [stdout]   |                  ^^^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `serde_json::Value`
[INFO] [stdout]  --> src/router.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use serde_json::Value;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `status_message`
[INFO] [stdout]   --> src/response.rs:63:13
[INFO] [stdout]    |
[INFO] [stdout] 63 |         let status_message = self.get_status_message();
[INFO] [stdout]    |             ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_status_message`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]   --> src/server.rs:66:21
[INFO] [stdout]    |
[INFO] [stdout] 66 |                 Err(err) => {
[INFO] [stdout]    |                     ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/router.rs:214:34
[INFO] [stdout]     |
[INFO] [stdout] 214 |     pub fn handle_request(&self, mut req: &mut Request, res: &mut Response, parent_path: &String) -> bool {
[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: fields `path`, `method`, and `handler` are never read
[INFO] [stdout]   --> src/route.rs:29:9
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub struct MiddlewareRoute {
[INFO] [stdout]    |            --------------- fields in this struct
[INFO] [stdout] 29 |     pub path: String,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 30 |     pub method: String,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout] 31 |     handler: Middleware
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `handle` is never used
[INFO] [stdout]   --> src/route.rs:43:12
[INFO] [stdout]    |
[INFO] [stdout] 34 | impl MiddlewareRoute {
[INFO] [stdout]    | -------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 43 |     pub fn handle(&self, req: &Request, res: &Response){
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `id` is never read
[INFO] [stdout]   --> src/thread_pool.rs:48:5
[INFO] [stdout]    |
[INFO] [stdout] 47 | struct Worker {
[INFO] [stdout]    |        ------ field in this struct
[INFO] [stdout] 48 |     id: usize,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/route.rs:23:9
[INFO] [stdout]    |
[INFO] [stdout] 23 |         &(self.handler)(req, res);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 23 |         let _ = &(self.handler)(req, res);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/route.rs:44:9
[INFO] [stdout]    |
[INFO] [stdout] 44 |         &(self.handler)(req, res);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 44 |         let _ = &(self.handler)(req, res);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.71s
[INFO] running `Command { std: "docker" "inspect" "779beb59c0df21cb2c6771a639d1dbd0cfa301c8f49a79a20d50ea147525b5a0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "779beb59c0df21cb2c6771a639d1dbd0cfa301c8f49a79a20d50ea147525b5a0", kill_on_drop: false }`
[INFO] [stdout] 779beb59c0df21cb2c6771a639d1dbd0cfa301c8f49a79a20d50ea147525b5a0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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 -Copt-level=3" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c71f0f4776a7c6e046ad87d704ad20caa650fc7c4bd76c30fde555df6ee0918f
[INFO] running `Command { std: "docker" "start" "-a" "c71f0f4776a7c6e046ad87d704ad20caa650fc7c4bd76c30fde555df6ee0918f", kill_on_drop: false }`
[INFO] [stderr]    Compiling burner v0.2.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `serde_json::Value`
[INFO] [stdout]  --> src/route.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use serde_json::Value;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Value` and `json`
[INFO] [stdout]  --> src/server.rs:4:18
[INFO] [stdout]   |
[INFO] [stdout] 4 | use serde_json::{Value, json};
[INFO] [stdout]   |                  ^^^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `serde_json::Value`
[INFO] [stdout]  --> src/router.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use serde_json::Value;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `status_message`
[INFO] [stdout]   --> src/response.rs:63:13
[INFO] [stdout]    |
[INFO] [stdout] 63 |         let status_message = self.get_status_message();
[INFO] [stdout]    |             ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_status_message`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]   --> src/server.rs:66:21
[INFO] [stdout]    |
[INFO] [stdout] 66 |                 Err(err) => {
[INFO] [stdout]    |                     ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/router.rs:214:34
[INFO] [stdout]     |
[INFO] [stdout] 214 |     pub fn handle_request(&self, mut req: &mut Request, res: &mut Response, parent_path: &String) -> bool {
[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: fields `path`, `method`, and `handler` are never read
[INFO] [stdout]   --> src/route.rs:29:9
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub struct MiddlewareRoute {
[INFO] [stdout]    |            --------------- fields in this struct
[INFO] [stdout] 29 |     pub path: String,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 30 |     pub method: String,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout] 31 |     handler: Middleware
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `handle` is never used
[INFO] [stdout]   --> src/route.rs:43:12
[INFO] [stdout]    |
[INFO] [stdout] 34 | impl MiddlewareRoute {
[INFO] [stdout]    | -------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 43 |     pub fn handle(&self, req: &Request, res: &Response){
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `id` is never read
[INFO] [stdout]   --> src/thread_pool.rs:48:5
[INFO] [stdout]    |
[INFO] [stdout] 47 | struct Worker {
[INFO] [stdout]    |        ------ field in this struct
[INFO] [stdout] 48 |     id: usize,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/route.rs:23:9
[INFO] [stdout]    |
[INFO] [stdout] 23 |         &(self.handler)(req, res);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 23 |         let _ = &(self.handler)(req, res);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/route.rs:44:9
[INFO] [stdout]    |
[INFO] [stdout] 44 |         &(self.handler)(req, res);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 44 |         let _ = &(self.handler)(req, res);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `serde_json::Value`
[INFO] [stdout]  --> src/route.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use serde_json::Value;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Value` and `json`
[INFO] [stdout]  --> src/server.rs:4:18
[INFO] [stdout]   |
[INFO] [stdout] 4 | use serde_json::{Value, json};
[INFO] [stdout]   |                  ^^^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `serde_json::Value`
[INFO] [stdout]  --> src/router.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use serde_json::Value;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `status_message`
[INFO] [stdout]   --> src/response.rs:63:13
[INFO] [stdout]    |
[INFO] [stdout] 63 |         let status_message = self.get_status_message();
[INFO] [stdout]    |             ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_status_message`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]   --> src/server.rs:66:21
[INFO] [stdout]    |
[INFO] [stdout] 66 |                 Err(err) => {
[INFO] [stdout]    |                     ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/router.rs:214:34
[INFO] [stdout]     |
[INFO] [stdout] 214 |     pub fn handle_request(&self, mut req: &mut Request, res: &mut Response, parent_path: &String) -> bool {
[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: fields `path`, `method`, and `handler` are never read
[INFO] [stdout]   --> src/route.rs:29:9
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub struct MiddlewareRoute {
[INFO] [stdout]    |            --------------- fields in this struct
[INFO] [stdout] 29 |     pub path: String,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 30 |     pub method: String,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout] 31 |     handler: Middleware
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `handle` is never used
[INFO] [stdout]   --> src/route.rs:43:12
[INFO] [stdout]    |
[INFO] [stdout] 34 | impl MiddlewareRoute {
[INFO] [stdout]    | -------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 43 |     pub fn handle(&self, req: &Request, res: &Response){
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `id` is never read
[INFO] [stdout]   --> src/thread_pool.rs:48:5
[INFO] [stdout]    |
[INFO] [stdout] 47 | struct Worker {
[INFO] [stdout]    |        ------ field in this struct
[INFO] [stdout] 48 |     id: usize,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/route.rs:23:9
[INFO] [stdout]    |
[INFO] [stdout] 23 |         &(self.handler)(req, res);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 23 |         let _ = &(self.handler)(req, res);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/route.rs:44:9
[INFO] [stdout]    |
[INFO] [stdout] 44 |         &(self.handler)(req, res);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 44 |         let _ = &(self.handler)(req, res);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `req`
[INFO] [stdout]   --> tests/main.rs:42:25
[INFO] [stdout]    |
[INFO] [stdout] 42 |         let get_post = |req: &Request, res: &mut Response| {
[INFO] [stdout]    |                         ^^^ help: if this is intentional, prefix it with an underscore: `_req`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `res`
[INFO] [stdout]   --> tests/main.rs:42:40
[INFO] [stdout]    |
[INFO] [stdout] 42 |         let get_post = |req: &Request, res: &mut Response| {
[INFO] [stdout]    |                                        ^^^ help: if this is intentional, prefix it with an underscore: `_res`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `req`
[INFO] [stdout]   --> tests/main.rs:46:28
[INFO] [stdout]    |
[INFO] [stdout] 46 |         let create_post = |req: &Request, res: &mut Response| {
[INFO] [stdout]    |                            ^^^ help: if this is intentional, prefix it with an underscore: `_req`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `res`
[INFO] [stdout]   --> tests/main.rs:46:43
[INFO] [stdout]    |
[INFO] [stdout] 46 |         let create_post = |req: &Request, res: &mut Response| {
[INFO] [stdout]    |                                           ^^^ help: if this is intentional, prefix it with an underscore: `_res`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `dummy_test` is never used
[INFO] [stdout]   --> tests/main.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 |     fn dummy_test(){
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.48s
[INFO] running `Command { std: "docker" "inspect" "c71f0f4776a7c6e046ad87d704ad20caa650fc7c4bd76c30fde555df6ee0918f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c71f0f4776a7c6e046ad87d704ad20caa650fc7c4bd76c30fde555df6ee0918f", kill_on_drop: false }`
[INFO] [stdout] c71f0f4776a7c6e046ad87d704ad20caa650fc7c4bd76c30fde555df6ee0918f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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 -Copt-level=3" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 02e071f978480bc1e880e5a83a622707dd357a69e2ea4ce03fcf263025cb0f2e
[INFO] running `Command { std: "docker" "start" "-a" "02e071f978480bc1e880e5a83a622707dd357a69e2ea4ce03fcf263025cb0f2e", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `serde_json::Value`
[INFO] [stderr]  --> src/route.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use serde_json::Value;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Value` and `json`
[INFO] [stderr]  --> src/server.rs:4:18
[INFO] [stderr]   |
[INFO] [stderr] 4 | use serde_json::{Value, json};
[INFO] [stderr]   |                  ^^^^^  ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `serde_json::Value`
[INFO] [stderr]  --> src/router.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use serde_json::Value;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `status_message`
[INFO] [stderr]   --> src/response.rs:63:13
[INFO] [stderr]    |
[INFO] [stderr] 63 |         let status_message = self.get_status_message();
[INFO] [stderr]    |             ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_status_message`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `err`
[INFO] [stderr]   --> src/server.rs:66:21
[INFO] [stderr]    |
[INFO] [stderr] 66 |                 Err(err) => {
[INFO] [stderr]    |                     ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/router.rs:214:34
[INFO] [stderr]     |
[INFO] [stderr] 214 |     pub fn handle_request(&self, mut req: &mut Request, res: &mut Response, parent_path: &String) -> bool {
[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: fields `path`, `method`, and `handler` are never read
[INFO] [stderr]   --> src/route.rs:29:9
[INFO] [stderr]    |
[INFO] [stderr] 28 | pub struct MiddlewareRoute {
[INFO] [stderr]    |            --------------- fields in this struct
[INFO] [stderr] 29 |     pub path: String,
[INFO] [stderr]    |         ^^^^
[INFO] [stderr] 30 |     pub method: String,
[INFO] [stderr]    |         ^^^^^^
[INFO] [stderr] 31 |     handler: Middleware
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method `handle` is never used
[INFO] [stderr]   --> src/route.rs:43:12
[INFO] [stderr]    |
[INFO] [stderr] 34 | impl MiddlewareRoute {
[INFO] [stderr]    | -------------------- method in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 43 |     pub fn handle(&self, req: &Request, res: &Response){
[INFO] [stderr]    |            ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field `id` is never read
[INFO] [stderr]   --> src/thread_pool.rs:48:5
[INFO] [stderr]    |
[INFO] [stderr] 47 | struct Worker {
[INFO] [stderr]    |        ------ field in this struct
[INFO] [stderr] 48 |     id: usize,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused borrow that must be used
[INFO] [stderr]   --> src/route.rs:23:9
[INFO] [stderr]    |
[INFO] [stderr] 23 |         &(self.handler)(req, res);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]    |
[INFO] [stderr] 23 |         let _ = &(self.handler)(req, res);
[INFO] [stderr]    |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused borrow that must be used
[INFO] [stderr]   --> src/route.rs:44:9
[INFO] [stderr]    |
[INFO] [stderr] 44 |         &(self.handler)(req, res);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stderr]    |
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]    |
[INFO] [stderr] 44 |         let _ = &(self.handler)(req, res);
[INFO] [stderr]    |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: `burner` (lib) generated 11 warnings (run `cargo fix --lib -p burner` to apply 4 suggestions)
[INFO] [stderr] warning: `burner` (lib test) generated 11 warnings (11 duplicates)
[INFO] [stderr] warning: unused variable: `req`
[INFO] [stderr]   --> tests/main.rs:42:25
[INFO] [stderr]    |
[INFO] [stderr] 42 |         let get_post = |req: &Request, res: &mut Response| {
[INFO] [stderr]    |                         ^^^ help: if this is intentional, prefix it with an underscore: `_req`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `res`
[INFO] [stderr]   --> tests/main.rs:42:40
[INFO] [stderr]    |
[INFO] [stderr] 42 |         let get_post = |req: &Request, res: &mut Response| {
[INFO] [stderr]    |                                        ^^^ help: if this is intentional, prefix it with an underscore: `_res`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `req`
[INFO] [stderr]   --> tests/main.rs:46:28
[INFO] [stderr]    |
[INFO] [stderr] 46 |         let create_post = |req: &Request, res: &mut Response| {
[INFO] [stderr]    |                            ^^^ help: if this is intentional, prefix it with an underscore: `_req`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `res`
[INFO] [stderr]   --> tests/main.rs:46:43
[INFO] [stderr]    |
[INFO] [stderr] 46 |         let create_post = |req: &Request, res: &mut Response| {
[INFO] [stderr]    |                                           ^^^ help: if this is intentional, prefix it with an underscore: `_res`
[INFO] [stderr] 
[INFO] [stderr] warning: function `dummy_test` is never used
[INFO] [stderr]   --> tests/main.rs:13:8
[INFO] [stderr]    |
[INFO] [stderr] 13 |     fn dummy_test(){
[INFO] [stderr]    |        ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `burner` (test "main") generated 5 warnings
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/burner-3d182c28b42bc220)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test router::shuld_match_path ... ok
[INFO] [stderr]      Running tests/main.rs (/opt/rustwide/target/debug/deps/main-e25b29e2f32a588c)
[INFO] [stdout] test router::shuld_collect_route_params_from_path ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::port_test has been running for over 60 seconds
[ERROR] error running command: no output for 300 seconds
[INFO] running `Command { std: "docker" "inspect" "02e071f978480bc1e880e5a83a622707dd357a69e2ea4ce03fcf263025cb0f2e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "02e071f978480bc1e880e5a83a622707dd357a69e2ea4ce03fcf263025cb0f2e", kill_on_drop: false }`
[INFO] [stdout] 02e071f978480bc1e880e5a83a622707dd357a69e2ea4ce03fcf263025cb0f2e
