[INFO] cloning repository https://github.com/jatayu1/rust-mini-redis [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jatayu1/rust-mini-redis" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjatayu1%2Frust-mini-redis", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjatayu1%2Frust-mini-redis'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 9103f41df23f095d23eb9faba2a4b19b73a706bb [INFO] checking jatayu1/rust-mini-redis against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjatayu1%2Frust-mini-redis" "/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/jatayu1/rust-mini-redis 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/jatayu1/rust-mini-redis [INFO] finished tweaking git repo https://github.com/jatayu1/rust-mini-redis [INFO] tweaked toml for git repo https://github.com/jatayu1/rust-mini-redis written to /workspace/builds/worker-4-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/jatayu1/rust-mini-redis 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] 4a0bfabe6de94d537b1c2082c10fdfca2039b96e92b6ada4ebed864e6a7fb2e4 [INFO] running `Command { std: "docker" "start" "-a" "4a0bfabe6de94d537b1c2082c10fdfca2039b96e92b6ada4ebed864e6a7fb2e4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "4a0bfabe6de94d537b1c2082c10fdfca2039b96e92b6ada4ebed864e6a7fb2e4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "4a0bfabe6de94d537b1c2082c10fdfca2039b96e92b6ada4ebed864e6a7fb2e4", kill_on_drop: false }` [INFO] [stdout] 4a0bfabe6de94d537b1c2082c10fdfca2039b96e92b6ada4ebed864e6a7fb2e4 [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] 0e5834a9fb192a3ff576cd690eb8d2445398c2a3029257e3a90b4bc8c1a01c00 [INFO] running `Command { std: "docker" "start" "-a" "0e5834a9fb192a3ff576cd690eb8d2445398c2a3029257e3a90b4bc8c1a01c00", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.71 [INFO] [stderr] Compiling libc v0.2.151 [INFO] [stderr] Compiling num-traits v0.2.17 [INFO] [stderr] Compiling proc-macro-error-attr v1.0.4 [INFO] [stderr] Checking tracing-core v0.1.32 [INFO] [stderr] Compiling syn v1.0.109 [INFO] [stderr] Checking smallvec v1.11.2 [INFO] [stderr] Compiling serde v1.0.193 [INFO] [stderr] Compiling proc-macro-error v1.0.4 [INFO] [stderr] Checking regex-syntax v0.8.2 [INFO] [stderr] Checking regex-syntax v0.6.29 [INFO] [stderr] Compiling unicode-segmentation v1.10.1 [INFO] [stderr] Checking futures-channel v0.3.30 [INFO] [stderr] Checking textwrap v0.11.0 [INFO] [stderr] Checking ryu v1.0.16 [INFO] [stderr] Compiling heck v0.3.3 [INFO] [stderr] Checking iana-time-zone v0.1.58 [INFO] [stderr] Compiling quote v1.0.33 [INFO] [stderr] Checking parking_lot_core v0.9.9 [INFO] [stderr] Compiling syn v2.0.43 [INFO] [stderr] Checking parking_lot v0.12.1 [INFO] [stderr] Checking regex-automata v0.4.3 [INFO] [stderr] Checking num_cpus v1.16.0 [INFO] [stderr] Checking atty v0.2.14 [INFO] [stderr] Checking mio v0.8.10 [INFO] [stderr] Checking socket2 v0.5.5 [INFO] [stderr] Checking signal-hook-registry v1.4.1 [INFO] [stderr] Checking log v0.4.20 [INFO] [stderr] Checking clap v2.34.0 [INFO] [stderr] Checking tracing-log v0.1.4 [INFO] [stderr] Checking chrono v0.4.31 [INFO] [stderr] Checking sharded-slab v0.1.7 [INFO] [stderr] Checking regex-automata v0.1.10 [INFO] [stderr] Checking regex v1.10.2 [INFO] [stderr] Checking thread_local v1.1.7 [INFO] [stderr] Checking atoi v0.3.3 [INFO] [stderr] Checking tracing-serde v0.1.3 [INFO] [stderr] Checking serde_json v1.0.108 [INFO] [stderr] Checking matchers v0.0.1 [INFO] [stderr] Compiling structopt-derive v0.4.18 [INFO] [stderr] Compiling tracing-attributes v0.1.27 [INFO] [stderr] Compiling futures-macro v0.3.30 [INFO] [stderr] Compiling tokio-macros v2.2.0 [INFO] [stderr] Compiling pin-project-internal v1.1.3 [INFO] [stderr] Compiling async-stream-impl v0.3.5 [INFO] [stderr] Checking async-stream v0.3.5 [INFO] [stderr] Checking tokio v1.35.1 [INFO] [stderr] Checking futures-util v0.3.30 [INFO] [stderr] Checking structopt v0.3.26 [INFO] [stderr] Checking pin-project v1.1.3 [INFO] [stderr] Checking tracing v0.1.40 [INFO] [stderr] Checking tracing-futures v0.2.5 [INFO] [stderr] Checking tracing-subscriber v0.2.25 [INFO] [stderr] Checking tokio-stream v0.1.14 [INFO] [stderr] Checking futures-executor v0.3.30 [INFO] [stderr] Checking futures v0.3.30 [INFO] [stderr] Checking mini-redis v0.4.1 [INFO] [stderr] Checking my-redis v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `self` [INFO] [stdout] --> src/bin/async_in_depth.rs:4:27 [INFO] [stdout] | [INFO] [stdout] 4 | use std::future::{Future, self}; [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::collections::VecDeque` [INFO] [stdout] --> src/bin/async_in_depth.rs:6:5 [INFO] [stdout] | [INFO] [stdout] 6 | use std::collections::VecDeque; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `my_async_fn` is never used [INFO] [stdout] --> src/bin/async_in_depth.rs:13:10 [INFO] [stdout] | [INFO] [stdout] 13 | async fn my_async_fn() { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant `State0` is never constructed [INFO] [stdout] --> src/bin/async_in_depth.rs:61:5 [INFO] [stdout] | [INFO] [stdout] 60 | enum MainFuture { [INFO] [stdout] | ---------- variant in this enum [INFO] [stdout] 61 | State0, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `MiniTokio` is never constructed [INFO] [stdout] --> src/bin/async_in_depth.rs:101:8 [INFO] [stdout] | [INFO] [stdout] 101 | struct MiniTokio { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `future` is never read [INFO] [stdout] --> src/bin/async_in_depth.rs:113:5 [INFO] [stdout] | [INFO] [stdout] 107 | struct Task { [INFO] [stdout] | ---- field in this struct [INFO] [stdout] ... [INFO] [stdout] 113 | future : Mutex + Send>>>, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated items `poll` and `spawn` are never used [INFO] [stdout] --> src/bin/async_in_depth.rs:121:8 [INFO] [stdout] | [INFO] [stdout] 116 | impl Task { [INFO] [stdout] | --------- associated items in this implementation [INFO] [stdout] ... [INFO] [stdout] 121 | fn poll(self: Arc) { [INFO] [stdout] | ^^^^ [INFO] [stdout] ... [INFO] [stdout] 138 | fn spawn(future: F, sender: &mpsc::Sender>) [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated items `new`, `spawn`, and `run` are never used [INFO] [stdout] --> src/bin/async_in_depth.rs:158:8 [INFO] [stdout] | [INFO] [stdout] 156 | impl MiniTokio { [INFO] [stdout] | -------------- associated items in this implementation [INFO] [stdout] 157 | // Intialize a new mini-tokio instance. [INFO] [stdout] 158 | fn new() -> MiniTokio { [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 169 | fn spawn(&mut self, future: F) [INFO] [stdout] | ^^^^^ [INFO] [stdout] ... [INFO] [stdout] 176 | fn run(&self) { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/bin/async_in_depth.rs:118:9 [INFO] [stdout] | [INFO] [stdout] 118 | self.executor.send(self.clone()); [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] 118 | let _ = self.executor.send(self.clone()); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 9 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `self` [INFO] [stdout] --> src/bin/async_in_depth.rs:4:27 [INFO] [stdout] | [INFO] [stdout] 4 | use std::future::{Future, self}; [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::collections::VecDeque` [INFO] [stdout] --> src/bin/async_in_depth.rs:6:5 [INFO] [stdout] | [INFO] [stdout] 6 | use std::collections::VecDeque; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: methods `write_frame` and `write_decimal` are never used [INFO] [stdout] --> src/bin/connection.rs:75:14 [INFO] [stdout] | [INFO] [stdout] 13 | impl Connection { [INFO] [stdout] | ---------------- methods in this implementation [INFO] [stdout] ... [INFO] [stdout] 75 | async fn write_frame(&mut self, frame: &Frame) -> io::Result<()> { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 108 | async fn write_decimal(&mut self, val: u64) -> io::Result<()> { [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/bin/connection.rs:104:9 [INFO] [stdout] | [INFO] [stdout] 104 | self.stream.flush().await; [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] 104 | let _ = self.stream.flush().await; [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `my_async_fn` is never used [INFO] [stdout] --> src/bin/async_in_depth.rs:13:10 [INFO] [stdout] | [INFO] [stdout] 13 | async fn my_async_fn() { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant `State0` is never constructed [INFO] [stdout] --> src/bin/async_in_depth.rs:61:5 [INFO] [stdout] | [INFO] [stdout] 60 | enum MainFuture { [INFO] [stdout] | ---------- variant in this enum [INFO] [stdout] 61 | State0, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `MiniTokio` is never constructed [INFO] [stdout] --> src/bin/async_in_depth.rs:101:8 [INFO] [stdout] | [INFO] [stdout] 101 | struct MiniTokio { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `future` is never read [INFO] [stdout] --> src/bin/async_in_depth.rs:113:5 [INFO] [stdout] | [INFO] [stdout] 107 | struct Task { [INFO] [stdout] | ---- field in this struct [INFO] [stdout] ... [INFO] [stdout] 113 | future : Mutex + Send>>>, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated items `poll` and `spawn` are never used [INFO] [stdout] --> src/bin/async_in_depth.rs:121:8 [INFO] [stdout] | [INFO] [stdout] 116 | impl Task { [INFO] [stdout] | --------- associated items in this implementation [INFO] [stdout] ... [INFO] [stdout] 121 | fn poll(self: Arc) { [INFO] [stdout] | ^^^^ [INFO] [stdout] ... [INFO] [stdout] 138 | fn spawn(future: F, sender: &mpsc::Sender>) [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated items `new`, `spawn`, and `run` are never used [INFO] [stdout] --> src/bin/async_in_depth.rs:158:8 [INFO] [stdout] | [INFO] [stdout] 156 | impl MiniTokio { [INFO] [stdout] | -------------- associated items in this implementation [INFO] [stdout] 157 | // Intialize a new mini-tokio instance. [INFO] [stdout] 158 | fn new() -> MiniTokio { [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 169 | fn spawn(&mut self, future: F) [INFO] [stdout] | ^^^^^ [INFO] [stdout] ... [INFO] [stdout] 176 | fn run(&self) { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/bin/async_in_depth.rs:118:9 [INFO] [stdout] | [INFO] [stdout] 118 | self.executor.send(self.clone()); [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] 118 | let _ = self.executor.send(self.clone()); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: methods `write_frame` and `write_decimal` are never used [INFO] [stdout] --> src/bin/connection.rs:75:14 [INFO] [stdout] | [INFO] [stdout] 13 | impl Connection { [INFO] [stdout] | ---------------- methods in this implementation [INFO] [stdout] ... [INFO] [stdout] 75 | async fn write_frame(&mut self, frame: &Frame) -> io::Result<()> { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 108 | async fn write_decimal(&mut self, val: u64) -> io::Result<()> { [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/bin/connection.rs:104:9 [INFO] [stdout] | [INFO] [stdout] 104 | self.stream.flush().await; [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] 104 | let _ = self.stream.flush().await; [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 9 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 30.46s [INFO] running `Command { std: "docker" "inspect" "0e5834a9fb192a3ff576cd690eb8d2445398c2a3029257e3a90b4bc8c1a01c00", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "0e5834a9fb192a3ff576cd690eb8d2445398c2a3029257e3a90b4bc8c1a01c00", kill_on_drop: false }` [INFO] [stdout] 0e5834a9fb192a3ff576cd690eb8d2445398c2a3029257e3a90b4bc8c1a01c00