[INFO] cloning repository https://github.com/nickx720/rust_async_ground_up [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/nickx720/rust_async_ground_up" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnickx720%2Frust_async_ground_up", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnickx720%2Frust_async_ground_up'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 50f3b3f85dab8ed7b48bb153a31960ac9d47015b [INFO] checking nickx720/rust_async_ground_up against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnickx720%2Frust_async_ground_up" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/nickx720/rust_async_ground_up on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/nickx720/rust_async_ground_up [INFO] finished tweaking git repo https://github.com/nickx720/rust_async_ground_up [INFO] tweaked toml for git repo https://github.com/nickx720/rust_async_ground_up written to /workspace/builds/worker-4-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/nickx720/rust_async_ground_up 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] aedad8b7877729a0a23aaf0838037c1add840849230d61500cb3df2998c41efd [INFO] running `Command { std: "docker" "start" "-a" "aedad8b7877729a0a23aaf0838037c1add840849230d61500cb3df2998c41efd", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "aedad8b7877729a0a23aaf0838037c1add840849230d61500cb3df2998c41efd", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "aedad8b7877729a0a23aaf0838037c1add840849230d61500cb3df2998c41efd", kill_on_drop: false }` [INFO] [stdout] aedad8b7877729a0a23aaf0838037c1add840849230d61500cb3df2998c41efd [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 977a950bec5dae9acbfc6ebaf3af30391f6e49bac9c5ff2f85505329787b840d [INFO] running `Command { std: "docker" "start" "-a" "977a950bec5dae9acbfc6ebaf3af30391f6e49bac9c5ff2f85505329787b840d", kill_on_drop: false }` [INFO] [stderr] Compiling anyhow v1.0.43 [INFO] [stderr] Compiling polling v2.3.0 [INFO] [stderr] Checking async_from_ground_up v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused doc comment [INFO] [stdout] --> src/tcp_example.rs:11:9 [INFO] [stdout] | [INFO] [stdout] 11 | /// Moving handle_connection to inside thread::spawn makes it multi-threaded [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] 12 | std::thread::spawn(|| handle_connection(stream)); [INFO] [stdout] | ------------------------------------------------ rustdoc does not generate documentation for expressions [INFO] [stdout] | [INFO] [stdout] = help: use `//` for a plain comment [INFO] [stdout] = note: `#[warn(unused_doc_comments)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::thread` [INFO] [stdout] --> src/webserver/mod.rs:6:5 [INFO] [stdout] | [INFO] [stdout] 6 | use std::thread; [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `tcp_example::tcp_main` [INFO] [stdout] --> src/main.rs:5:5 [INFO] [stdout] | [INFO] [stdout] 5 | use tcp_example::tcp_main; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused doc comment [INFO] [stdout] --> src/tcp_example.rs:11:9 [INFO] [stdout] | [INFO] [stdout] 11 | /// Moving handle_connection to inside thread::spawn makes it multi-threaded [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] 12 | std::thread::spawn(|| handle_connection(stream)); [INFO] [stdout] | ------------------------------------------------ rustdoc does not generate documentation for expressions [INFO] [stdout] | [INFO] [stdout] = help: use `//` for a plain comment [INFO] [stdout] = note: `#[warn(unused_doc_comments)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::thread` [INFO] [stdout] --> src/webserver/mod.rs:6:5 [INFO] [stdout] | [INFO] [stdout] 6 | use std::thread; [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `tcp_example::tcp_main` [INFO] [stdout] --> src/main.rs:5:5 [INFO] [stdout] | [INFO] [stdout] 5 | use tcp_example::tcp_main; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unreachable expression [INFO] [stdout] --> src/webserver/mod.rs:106:5 [INFO] [stdout] | [INFO] [stdout] 104 | let num_events = todo!(); [INFO] [stdout] | ------- any code following this expression is unreachable [INFO] [stdout] 105 | } [INFO] [stdout] 106 | todo!() [INFO] [stdout] | ^^^^^^^ unreachable expression [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unreachable_code)]` on by default [INFO] [stdout] = note: this warning originates in the macro `todo` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unreachable expression [INFO] [stdout] --> src/webserver/mod.rs:106:5 [INFO] [stdout] | [INFO] [stdout] 104 | let num_events = todo!(); [INFO] [stdout] | ------- any code following this expression is unreachable [INFO] [stdout] 105 | } [INFO] [stdout] 106 | todo!() [INFO] [stdout] | ^^^^^^^ unreachable expression [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unreachable_code)]` on by default [INFO] [stdout] = note: this warning originates in the macro `todo` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/webserver/mod.rs:46:17 [INFO] [stdout] | [INFO] [stdout] 46 | let mut pool = Threadpool::new(4); [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: unused variable: `poll_fds` [INFO] [stdout] --> src/webserver/mod.rs:98:13 [INFO] [stdout] | [INFO] [stdout] 98 | let mut poll_fds = vec![libc::pollfd { [INFO] [stdout] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_poll_fds` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `num_events` [INFO] [stdout] --> src/webserver/mod.rs:104:13 [INFO] [stdout] | [INFO] [stdout] 104 | let num_events = todo!(); [INFO] [stdout] | ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_num_events` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/webserver/mod.rs:98:9 [INFO] [stdout] | [INFO] [stdout] 98 | let mut poll_fds = vec![libc::pollfd { [INFO] [stdout] | ----^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `tcp_main` is never used [INFO] [stdout] --> src/tcp_example.rs:7:8 [INFO] [stdout] | [INFO] [stdout] 7 | pub fn tcp_main() -> Result<()> { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `handle_connection` is never used [INFO] [stdout] --> src/tcp_example.rs:17:4 [INFO] [stdout] | [INFO] [stdout] 17 | fn handle_connection(mut stream: TcpStream) -> Result<()> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `webserverasyncmain` is never used [INFO] [stdout] --> src/webserver/mod.rs:93:8 [INFO] [stdout] | [INFO] [stdout] 93 | pub fn webserverasyncmain() -> Result<()> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variants `POST`, `PUT`, and `DELETE` are never constructed [INFO] [stdout] --> src/webserver/router.rs:12:5 [INFO] [stdout] | [INFO] [stdout] 10 | pub enum Method { [INFO] [stdout] | ------ variants in this enum [INFO] [stdout] 11 | GET, [INFO] [stdout] 12 | POST, [INFO] [stdout] | ^^^^ [INFO] [stdout] 13 | PUT, [INFO] [stdout] | ^^^ [INFO] [stdout] 14 | DELETE, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `id` is never read [INFO] [stdout] --> src/webserver/worker.rs:7:9 [INFO] [stdout] | [INFO] [stdout] 6 | pub struct Worker { [INFO] [stdout] | ------ field in this struct [INFO] [stdout] 7 | pub id: usize, [INFO] [stdout] | ^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/webserver/mod.rs:50:21 [INFO] [stdout] | [INFO] [stdout] 50 | router.route_client(client.unwrap()); [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)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 50 | let _ = router.route_client(client.unwrap()); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/webserver/mod.rs:46:17 [INFO] [stdout] | [INFO] [stdout] 46 | let mut pool = Threadpool::new(4); [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: unused variable: `poll_fds` [INFO] [stdout] --> src/webserver/mod.rs:98:13 [INFO] [stdout] | [INFO] [stdout] 98 | let mut poll_fds = vec![libc::pollfd { [INFO] [stdout] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_poll_fds` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `num_events` [INFO] [stdout] --> src/webserver/mod.rs:104:13 [INFO] [stdout] | [INFO] [stdout] 104 | let num_events = todo!(); [INFO] [stdout] | ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_num_events` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/webserver/mod.rs:98:9 [INFO] [stdout] | [INFO] [stdout] 98 | let mut poll_fds = vec![libc::pollfd { [INFO] [stdout] | ----^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `tcp_main` is never used [INFO] [stdout] --> src/tcp_example.rs:7:8 [INFO] [stdout] | [INFO] [stdout] 7 | pub fn tcp_main() -> Result<()> { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 14 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `handle_connection` is never used [INFO] [stdout] --> src/tcp_example.rs:17:4 [INFO] [stdout] | [INFO] [stdout] 17 | fn handle_connection(mut stream: TcpStream) -> Result<()> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `webserverasyncmain` is never used [INFO] [stdout] --> src/webserver/mod.rs:93:8 [INFO] [stdout] | [INFO] [stdout] 93 | pub fn webserverasyncmain() -> Result<()> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variants `POST`, `PUT`, and `DELETE` are never constructed [INFO] [stdout] --> src/webserver/router.rs:12:5 [INFO] [stdout] | [INFO] [stdout] 10 | pub enum Method { [INFO] [stdout] | ------ variants in this enum [INFO] [stdout] 11 | GET, [INFO] [stdout] 12 | POST, [INFO] [stdout] | ^^^^ [INFO] [stdout] 13 | PUT, [INFO] [stdout] | ^^^ [INFO] [stdout] 14 | DELETE, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `id` is never read [INFO] [stdout] --> src/webserver/worker.rs:7:9 [INFO] [stdout] | [INFO] [stdout] 6 | pub struct Worker { [INFO] [stdout] | ------ field in this struct [INFO] [stdout] 7 | pub id: usize, [INFO] [stdout] | ^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/webserver/mod.rs:50:21 [INFO] [stdout] | [INFO] [stdout] 50 | router.route_client(client.unwrap()); [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)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 50 | let _ = router.route_client(client.unwrap()); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 14 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.12s [INFO] running `Command { std: "docker" "inspect" "977a950bec5dae9acbfc6ebaf3af30391f6e49bac9c5ff2f85505329787b840d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "977a950bec5dae9acbfc6ebaf3af30391f6e49bac9c5ff2f85505329787b840d", kill_on_drop: false }` [INFO] [stdout] 977a950bec5dae9acbfc6ebaf3af30391f6e49bac9c5ff2f85505329787b840d