[INFO] cloning repository https://github.com/0x1david/test-html-server
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/0x1david/test-html-server" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F0x1david%2Ftest-html-server", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F0x1david%2Ftest-html-server'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7c566253cd561dd551cf2ccbf152fc3de1235b98
[INFO] testing 0x1david/test-html-server against try#9f93af291970322f4f1c6315ccde4d7078201159 for pr-146098-6
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F0x1david%2Ftest-html-server" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/0x1david/test-html-server
[INFO] finished tweaking git repo https://github.com/0x1david/test-html-server
[INFO] tweaked toml for git repo https://github.com/0x1david/test-html-server written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/0x1david/test-html-server on toolchain 9f93af291970322f4f1c6315ccde4d7078201159
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/0x1david/test-html-server 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" "+9f93af291970322f4f1c6315ccde4d7078201159" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 29fa175c5683ebcd65c706b422416ab0ddcc1d3beb58bcce850830ffb64a1427
[INFO] running `Command { std: "docker" "start" "-a" "29fa175c5683ebcd65c706b422416ab0ddcc1d3beb58bcce850830ffb64a1427", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "29fa175c5683ebcd65c706b422416ab0ddcc1d3beb58bcce850830ffb64a1427", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "29fa175c5683ebcd65c706b422416ab0ddcc1d3beb58bcce850830ffb64a1427", kill_on_drop: false }`
[INFO] [stdout] 29fa175c5683ebcd65c706b422416ab0ddcc1d3beb58bcce850830ffb64a1427
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 04f0f16ea4d49279bcea42ea8db8a37acb75a83d9f6466e727217f5989f9f5b4
[INFO] running `Command { std: "docker" "start" "-a" "04f0f16ea4d49279bcea42ea8db8a37acb75a83d9f6466e727217f5989f9f5b4", kill_on_drop: false }`
[INFO] [stderr]    Compiling test_server v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `http::Request`
[INFO] [stdout]  --> src/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use http::Request;
[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 import: `request::ParseError`
[INFO] [stdout]  --> src/http/mod.rs:2:9
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub use request::ParseError;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Value as QueryStringValue`
[INFO] [stdout]  --> src/http/mod.rs:3:37
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub use query_string::{QueryString, Value as QueryStringValue};
[INFO] [stdout]   |                                     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `default`
[INFO] [stdout]  --> src/http/method.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{default, str::FromStr};
[INFO] [stdout]   |           ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]   --> src/server.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn arr(a: &[u8; 5]) {}
[INFO] [stdout]    |        ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]   --> src/server.rs:36:37
[INFO] [stdout]    |
[INFO] [stdout] 36 | ...                   Err(e) => println!("Failed"),
[INFO] [stdout]    |                           ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `get`
[INFO] [stdout]   --> src/main.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let get = HTTPMethod::GET;
[INFO] [stdout]    |         ^^^
[INFO] [stdout]    |
[INFO] [stdout] help: you might have meant to pattern match on the similarly named variant `GET`
[INFO] [stdout]    |
[INFO] [stdout] 10 -     let get = HTTPMethod::GET;
[INFO] [stdout] 10 +     let http::method::HTTPMethod::GET = HTTPMethod::GET;
[INFO] [stdout]    |
[INFO] [stdout] help: if this is intentional, prefix it with an underscore
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let _get = HTTPMethod::GET;
[INFO] [stdout]    |         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `delete`
[INFO] [stdout]   --> src/main.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let delete = HTTPMethod::DELETE;
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: you might have meant to pattern match on the similarly named variant `DELETE`
[INFO] [stdout]    |
[INFO] [stdout] 11 -     let delete = HTTPMethod::DELETE;
[INFO] [stdout] 11 +     let http::method::HTTPMethod::DELETE = HTTPMethod::DELETE;
[INFO] [stdout]    |
[INFO] [stdout] help: if this is intentional, prefix it with an underscore
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let _delete = HTTPMethod::DELETE;
[INFO] [stdout]    |         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `post`
[INFO] [stdout]   --> src/main.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let post = HTTPMethod::POST;
[INFO] [stdout]    |         ^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: you might have meant to pattern match on the similarly named variant `POST`
[INFO] [stdout]    |
[INFO] [stdout] 12 -     let post = HTTPMethod::POST;
[INFO] [stdout] 12 +     let http::method::HTTPMethod::POST = HTTPMethod::POST;
[INFO] [stdout]    |
[INFO] [stdout] help: if this is intentional, prefix it with an underscore
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let _post = HTTPMethod::POST;
[INFO] [stdout]    |         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `put`
[INFO] [stdout]   --> src/main.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 |     let put = HTTPMethod::PUT;
[INFO] [stdout]    |         ^^^
[INFO] [stdout]    |
[INFO] [stdout] help: you might have meant to pattern match on the similarly named variant `PUT`
[INFO] [stdout]    |
[INFO] [stdout] 13 -     let put = HTTPMethod::PUT;
[INFO] [stdout] 13 +     let http::method::HTTPMethod::PUT = HTTPMethod::PUT;
[INFO] [stdout]    |
[INFO] [stdout] help: if this is intentional, prefix it with an underscore
[INFO] [stdout]    |
[INFO] [stdout] 13 |     let _put = HTTPMethod::PUT;
[INFO] [stdout]    |         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/http/query_string.rs:15:16
[INFO] [stdout]    |
[INFO] [stdout] 15 |     pub fn get(&self, key: &str) -> Option<&Value> {
[INFO] [stdout]    |                ^^^^^                       ^^^^^^
[INFO] [stdout]    |                |                           ||
[INFO] [stdout]    |                |                           |the same lifetime is hidden here
[INFO] [stdout]    |                |                           the same lifetime is elided here
[INFO] [stdout]    |                the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 15 |     pub fn get(&self, key: &str) -> Option<&Value<'_>> {
[INFO] [stdout]    |                                                  ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/server.rs:34:37
[INFO] [stdout]    |
[INFO] [stdout] 34 | ...                   write!(stream, "{}", response);
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 34 |                                     let _ = write!(stream, "{}", response);
[INFO] [stdout]    |                                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.39s
[INFO] running `Command { std: "docker" "inspect" "04f0f16ea4d49279bcea42ea8db8a37acb75a83d9f6466e727217f5989f9f5b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "04f0f16ea4d49279bcea42ea8db8a37acb75a83d9f6466e727217f5989f9f5b4", kill_on_drop: false }`
[INFO] [stdout] 04f0f16ea4d49279bcea42ea8db8a37acb75a83d9f6466e727217f5989f9f5b4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] eb92d2823e5f00362a93cab84d8e4c05ba619e343725b3410488d4ce9959fb61
[INFO] running `Command { std: "docker" "start" "-a" "eb92d2823e5f00362a93cab84d8e4c05ba619e343725b3410488d4ce9959fb61", kill_on_drop: false }`
[INFO] [stderr]    Compiling test_server v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `http::Request`
[INFO] [stdout]  --> src/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use http::Request;
[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 import: `request::ParseError`
[INFO] [stdout]  --> src/http/mod.rs:2:9
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub use request::ParseError;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Value as QueryStringValue`
[INFO] [stdout]  --> src/http/mod.rs:3:37
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub use query_string::{QueryString, Value as QueryStringValue};
[INFO] [stdout]   |                                     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `default`
[INFO] [stdout]  --> src/http/method.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{default, str::FromStr};
[INFO] [stdout]   |           ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]   --> src/server.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn arr(a: &[u8; 5]) {}
[INFO] [stdout]    |        ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]   --> src/server.rs:36:37
[INFO] [stdout]    |
[INFO] [stdout] 36 | ...                   Err(e) => println!("Failed"),
[INFO] [stdout]    |                           ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `get`
[INFO] [stdout]   --> src/main.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let get = HTTPMethod::GET;
[INFO] [stdout]    |         ^^^
[INFO] [stdout]    |
[INFO] [stdout] help: you might have meant to pattern match on the similarly named variant `GET`
[INFO] [stdout]    |
[INFO] [stdout] 10 -     let get = HTTPMethod::GET;
[INFO] [stdout] 10 +     let http::method::HTTPMethod::GET = HTTPMethod::GET;
[INFO] [stdout]    |
[INFO] [stdout] help: if this is intentional, prefix it with an underscore
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let _get = HTTPMethod::GET;
[INFO] [stdout]    |         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `delete`
[INFO] [stdout]   --> src/main.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let delete = HTTPMethod::DELETE;
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: you might have meant to pattern match on the similarly named variant `DELETE`
[INFO] [stdout]    |
[INFO] [stdout] 11 -     let delete = HTTPMethod::DELETE;
[INFO] [stdout] 11 +     let http::method::HTTPMethod::DELETE = HTTPMethod::DELETE;
[INFO] [stdout]    |
[INFO] [stdout] help: if this is intentional, prefix it with an underscore
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let _delete = HTTPMethod::DELETE;
[INFO] [stdout]    |         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `post`
[INFO] [stdout]   --> src/main.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let post = HTTPMethod::POST;
[INFO] [stdout]    |         ^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: you might have meant to pattern match on the similarly named variant `POST`
[INFO] [stdout]    |
[INFO] [stdout] 12 -     let post = HTTPMethod::POST;
[INFO] [stdout] 12 +     let http::method::HTTPMethod::POST = HTTPMethod::POST;
[INFO] [stdout]    |
[INFO] [stdout] help: if this is intentional, prefix it with an underscore
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let _post = HTTPMethod::POST;
[INFO] [stdout]    |         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `put`
[INFO] [stdout]   --> src/main.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 |     let put = HTTPMethod::PUT;
[INFO] [stdout]    |         ^^^
[INFO] [stdout]    |
[INFO] [stdout] help: you might have meant to pattern match on the similarly named variant `PUT`
[INFO] [stdout]    |
[INFO] [stdout] 13 -     let put = HTTPMethod::PUT;
[INFO] [stdout] 13 +     let http::method::HTTPMethod::PUT = HTTPMethod::PUT;
[INFO] [stdout]    |
[INFO] [stdout] help: if this is intentional, prefix it with an underscore
[INFO] [stdout]    |
[INFO] [stdout] 13 |     let _put = HTTPMethod::PUT;
[INFO] [stdout]    |         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/http/query_string.rs:15:16
[INFO] [stdout]    |
[INFO] [stdout] 15 |     pub fn get(&self, key: &str) -> Option<&Value> {
[INFO] [stdout]    |                ^^^^^                       ^^^^^^
[INFO] [stdout]    |                |                           ||
[INFO] [stdout]    |                |                           |the same lifetime is hidden here
[INFO] [stdout]    |                |                           the same lifetime is elided here
[INFO] [stdout]    |                the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 15 |     pub fn get(&self, key: &str) -> Option<&Value<'_>> {
[INFO] [stdout]    |                                                  ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/server.rs:34:37
[INFO] [stdout]    |
[INFO] [stdout] 34 | ...                   write!(stream, "{}", response);
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 34 |                                     let _ = write!(stream, "{}", response);
[INFO] [stdout]    |                                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.39s
[INFO] running `Command { std: "docker" "inspect" "eb92d2823e5f00362a93cab84d8e4c05ba619e343725b3410488d4ce9959fb61", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eb92d2823e5f00362a93cab84d8e4c05ba619e343725b3410488d4ce9959fb61", kill_on_drop: false }`
[INFO] [stdout] eb92d2823e5f00362a93cab84d8e4c05ba619e343725b3410488d4ce9959fb61
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] fa56591a764328e563c18616cdd575b550d8e842c43a2818981d6a87a186c703
[INFO] running `Command { std: "docker" "start" "-a" "fa56591a764328e563c18616cdd575b550d8e842c43a2818981d6a87a186c703", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `http::Request`
[INFO] [stderr]  --> src/main.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use http::Request;
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `request::ParseError`
[INFO] [stderr]  --> src/http/mod.rs:2:9
[INFO] [stderr]   |
[INFO] [stderr] 2 | pub use request::ParseError;
[INFO] [stderr]   |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Value as QueryStringValue`
[INFO] [stderr]  --> src/http/mod.rs:3:37
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub use query_string::{QueryString, Value as QueryStringValue};
[INFO] [stderr]   |                                     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `default`
[INFO] [stderr]  --> src/http/method.rs:1:11
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::{default, str::FromStr};
[INFO] [stderr]   |           ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `a`
[INFO] [stderr]   --> src/server.rs:10:8
[INFO] [stderr]    |
[INFO] [stderr] 10 | fn arr(a: &[u8; 5]) {}
[INFO] [stderr]    |        ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `e`
[INFO] [stderr]   --> src/server.rs:36:37
[INFO] [stderr]    |
[INFO] [stderr] 36 | ...                   Err(e) => println!("Failed"),
[INFO] [stderr]    |                           ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `get`
[INFO] [stderr]   --> src/main.rs:10:9
[INFO] [stderr]    |
[INFO] [stderr] 10 |     let get = HTTPMethod::GET;
[INFO] [stderr]    |         ^^^
[INFO] [stderr]    |
[INFO] [stderr] help: you might have meant to pattern match on the similarly named variant `GET`
[INFO] [stderr]    |
[INFO] [stderr] 10 -     let get = HTTPMethod::GET;
[INFO] [stderr] 10 +     let http::method::HTTPMethod::GET = HTTPMethod::GET;
[INFO] [stderr]    |
[INFO] [stderr] help: if this is intentional, prefix it with an underscore
[INFO] [stderr]    |
[INFO] [stderr] 10 |     let _get = HTTPMethod::GET;
[INFO] [stderr]    |         +
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `delete`
[INFO] [stderr]   --> src/main.rs:11:9
[INFO] [stderr]    |
[INFO] [stderr] 11 |     let delete = HTTPMethod::DELETE;
[INFO] [stderr]    |         ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr] help: you might have meant to pattern match on the similarly named variant `DELETE`
[INFO] [stderr]    |
[INFO] [stderr] 11 -     let delete = HTTPMethod::DELETE;
[INFO] [stderr] 11 +     let http::method::HTTPMethod::DELETE = HTTPMethod::DELETE;
[INFO] [stderr]    |
[INFO] [stderr] help: if this is intentional, prefix it with an underscore
[INFO] [stderr]    |
[INFO] [stderr] 11 |     let _delete = HTTPMethod::DELETE;
[INFO] [stderr]    |         +
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `post`
[INFO] [stderr]   --> src/main.rs:12:9
[INFO] [stderr]    |
[INFO] [stderr] 12 |     let post = HTTPMethod::POST;
[INFO] [stderr]    |         ^^^^
[INFO] [stderr]    |
[INFO] [stderr] help: you might have meant to pattern match on the similarly named variant `POST`
[INFO] [stderr]    |
[INFO] [stderr] 12 -     let post = HTTPMethod::POST;
[INFO] [stderr] 12 +     let http::method::HTTPMethod::POST = HTTPMethod::POST;
[INFO] [stderr]    |
[INFO] [stderr] help: if this is intentional, prefix it with an underscore
[INFO] [stderr]    |
[INFO] [stderr] 12 |     let _post = HTTPMethod::POST;
[INFO] [stderr]    |         +
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `put`
[INFO] [stderr]   --> src/main.rs:13:9
[INFO] [stderr]    |
[INFO] [stderr] 13 |     let put = HTTPMethod::PUT;
[INFO] [stderr]    |         ^^^
[INFO] [stderr]    |
[INFO] [stderr] help: you might have meant to pattern match on the similarly named variant `PUT`
[INFO] [stderr]    |
[INFO] [stderr] 13 -     let put = HTTPMethod::PUT;
[INFO] [stderr] 13 +     let http::method::HTTPMethod::PUT = HTTPMethod::PUT;
[INFO] [stderr]    |
[INFO] [stderr] help: if this is intentional, prefix it with an underscore
[INFO] [stderr]    |
[INFO] [stderr] 13 |     let _put = HTTPMethod::PUT;
[INFO] [stderr]    |         +
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]   --> src/http/query_string.rs:15:16
[INFO] [stderr]    |
[INFO] [stderr] 15 |     pub fn get(&self, key: &str) -> Option<&Value> {
[INFO] [stderr]    |                ^^^^^                       ^^^^^^
[INFO] [stderr]    |                |                           ||
[INFO] [stderr]    |                |                           |the same lifetime is hidden here
[INFO] [stderr]    |                |                           the same lifetime is elided here
[INFO] [stderr]    |                the lifetime is elided here
[INFO] [stderr]    |
[INFO] [stderr]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]    |
[INFO] [stderr] 15 |     pub fn get(&self, key: &str) -> Option<&Value<'_>> {
[INFO] [stderr]    |                                                  ++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/server.rs:34:37
[INFO] [stderr]    |
[INFO] [stderr] 34 | ...                   write!(stream, "{}", response);
[INFO] [stderr]    |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]    |
[INFO] [stderr] 34 |                                     let _ = write!(stream, "{}", response);
[INFO] [stderr]    |                                     +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: `test_server` (bin "test_server" test) generated 12 warnings (run `cargo fix --bin "test_server" -p test_server --tests` to apply 11 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/test_server-2e4ba8b3345e4cb3)
[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" "fa56591a764328e563c18616cdd575b550d8e842c43a2818981d6a87a186c703", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fa56591a764328e563c18616cdd575b550d8e842c43a2818981d6a87a186c703", kill_on_drop: false }`
[INFO] [stdout] fa56591a764328e563c18616cdd575b550d8e842c43a2818981d6a87a186c703
