[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 try#b1f2594eac607c1f051534800237eeedb5590a49 for pr-139493-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjatayu1%2Frust-mini-redis" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[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-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/jatayu1/rust-mini-redis on toolchain b1f2594eac607c1f051534800237eeedb5590a49
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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" "+b1f2594eac607c1f051534800237eeedb5590a49" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 938cf73b514096e90142531a03cb6d2ae06d93a6ec78d75b328443ba595cd147
[INFO] running `Command { std: "docker" "start" "-a" "938cf73b514096e90142531a03cb6d2ae06d93a6ec78d75b328443ba595cd147", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "938cf73b514096e90142531a03cb6d2ae06d93a6ec78d75b328443ba595cd147", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "938cf73b514096e90142531a03cb6d2ae06d93a6ec78d75b328443ba595cd147", kill_on_drop: false }`
[INFO] [stdout] 938cf73b514096e90142531a03cb6d2ae06d93a6ec78d75b328443ba595cd147
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 84ac411e1033843ed6b05a90b64e2c889fa3a6c76932d1f6c37766dfe52ea544
[INFO] running `Command { std: "docker" "start" "-a" "84ac411e1033843ed6b05a90b64e2c889fa3a6c76932d1f6c37766dfe52ea544", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.71
[INFO] [stderr]    Compiling serde v1.0.193
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking regex-syntax v0.8.2
[INFO] [stderr]     Checking futures-sink v0.3.30
[INFO] [stderr]    Compiling lock_api v0.4.11
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]     Checking log v0.4.20
[INFO] [stderr]     Checking parking_lot_core v0.9.9
[INFO] [stderr]     Checking socket2 v0.5.5
[INFO] [stderr]     Checking signal-hook-registry v1.4.1
[INFO] [stderr]     Checking num_cpus v1.16.0
[INFO] [stderr]     Checking mio v0.8.10
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking iana-time-zone v0.1.58
[INFO] [stderr]     Checking futures-channel v0.3.30
[INFO] [stderr]     Checking futures-io v0.3.30
[INFO] [stderr]     Checking tracing-log v0.1.4
[INFO] [stderr]     Checking matchers v0.0.1
[INFO] [stderr]     Checking chrono v0.4.31
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking thread_local v1.1.7
[INFO] [stderr]     Checking atoi v0.3.3
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]    Compiling syn v2.0.43
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]     Checking regex-automata v0.4.3
[INFO] [stderr]     Checking regex v1.10.2
[INFO] [stderr]     Checking tracing-serde v0.1.3
[INFO] [stderr]     Checking serde_json v1.0.108
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling structopt-derive v0.4.18
[INFO] [stderr]     Checking structopt v0.3.26
[INFO] [stderr]    Compiling tracing-attributes v0.1.27
[INFO] [stderr]    Compiling futures-macro v0.3.30
[INFO] [stderr]    Compiling pin-project-internal v1.1.3
[INFO] [stderr]    Compiling tokio-macros v2.2.0
[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 pin-project v1.1.3
[INFO] [stderr]     Checking tracing v0.1.40
[INFO] [stderr]     Checking tracing-subscriber v0.2.25
[INFO] [stderr]     Checking tracing-futures v0.2.5
[INFO] [stderr]     Checking futures-executor v0.3.30
[INFO] [stderr]     Checking futures v0.3.30
[INFO] [stderr]     Checking tokio-stream v0.1.14
[INFO] [stderr]     Checking mini-redis v0.4.1
[INFO] [stderr]     Checking my-redis v0.1.0 (/opt/rustwide/workdir)
[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)]` (part of `#[warn(unused)]`) 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)]` (part of `#[warn(unused)]`) 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: 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)]` (part of `#[warn(unused)]`) 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)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `MainFuture` is never used
[INFO] [stdout]   --> src/bin/async_in_depth.rs:60:6
[INFO] [stdout]    |
[INFO] [stdout] 60 | enum MainFuture {
[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: struct `Task` is never constructed
[INFO] [stdout]    --> src/bin/async_in_depth.rs:107:8
[INFO] [stdout]     |
[INFO] [stdout] 107 | struct Task {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `schedule`, `poll`, and `spawn` are never used
[INFO] [stdout]    --> src/bin/async_in_depth.rs:117:8
[INFO] [stdout]     |
[INFO] [stdout] 116 | impl Task {
[INFO] [stdout]     | --------- associated items in this implementation
[INFO] [stdout] 117 |     fn schedule (self: &Arc<Self>){
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 121 |     fn poll(self: Arc<Self>) {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 138 |     fn spawn<F>(future: F, sender: &mpsc::Sender<Arc<Task>>) 
[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<F>(&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)]` (part of `#[warn(unused)]`) 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)]` (part of `#[warn(unused)]`) 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)]` (part of `#[warn(unused)]`) 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: 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)]` (part of `#[warn(unused)]`) 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)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `MainFuture` is never used
[INFO] [stdout]   --> src/bin/async_in_depth.rs:60:6
[INFO] [stdout]    |
[INFO] [stdout] 60 | enum MainFuture {
[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: struct `Task` is never constructed
[INFO] [stdout]    --> src/bin/async_in_depth.rs:107:8
[INFO] [stdout]     |
[INFO] [stdout] 107 | struct Task {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `schedule`, `poll`, and `spawn` are never used
[INFO] [stdout]    --> src/bin/async_in_depth.rs:117:8
[INFO] [stdout]     |
[INFO] [stdout] 116 | impl Task {
[INFO] [stdout]     | --------- associated items in this implementation
[INFO] [stdout] 117 |     fn schedule (self: &Arc<Self>){
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 121 |     fn poll(self: Arc<Self>) {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 138 |     fn spawn<F>(future: F, sender: &mpsc::Sender<Arc<Task>>) 
[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<F>(&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)]` (part of `#[warn(unused)]`) 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] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 27.47s
[INFO] running `Command { std: "docker" "inspect" "84ac411e1033843ed6b05a90b64e2c889fa3a6c76932d1f6c37766dfe52ea544", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "84ac411e1033843ed6b05a90b64e2c889fa3a6c76932d1f6c37766dfe52ea544", kill_on_drop: false }`
[INFO] [stdout] 84ac411e1033843ed6b05a90b64e2c889fa3a6c76932d1f6c37766dfe52ea544
