[INFO] cloning repository https://github.com/Yougigun/learning_tokio
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Yougigun/learning_tokio" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FYougigun%2Flearning_tokio", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FYougigun%2Flearning_tokio'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f16863b510097081efdcb39d039a27acf000bd01
[INFO] checking Yougigun/learning_tokio against master#779e19d8baa3e3625bd4fc5c85cbb2ad47b43155 for pr-147589-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FYougigun%2Flearning_tokio" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Yougigun/learning_tokio
[INFO] finished tweaking git repo https://github.com/Yougigun/learning_tokio
[INFO] tweaked toml for git repo https://github.com/Yougigun/learning_tokio written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Yougigun/learning_tokio on toolchain 779e19d8baa3e3625bd4fc5c85cbb2ad47b43155
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+779e19d8baa3e3625bd4fc5c85cbb2ad47b43155" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Yougigun/learning_tokio 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" "+779e19d8baa3e3625bd4fc5c85cbb2ad47b43155" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr]   |
[INFO] [stderr]   = note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr]   = note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr]   = note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr]     Updating crates.io index
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+779e19d8baa3e3625bd4fc5c85cbb2ad47b43155" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 889fb057e854785e159d4b03f5f59e637d82145e80f815a50826fe93649bd868
[INFO] running `Command { std: "docker" "start" "-a" "889fb057e854785e159d4b03f5f59e637d82145e80f815a50826fe93649bd868", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "889fb057e854785e159d4b03f5f59e637d82145e80f815a50826fe93649bd868", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "889fb057e854785e159d4b03f5f59e637d82145e80f815a50826fe93649bd868", kill_on_drop: false }`
[INFO] [stdout] 889fb057e854785e159d4b03f5f59e637d82145e80f815a50826fe93649bd868
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+779e19d8baa3e3625bd4fc5c85cbb2ad47b43155" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9bfefe5375aa16bfc616638e1f8cfb85ab39882738b6d142bc2537100cc127d6
[INFO] running `Command { std: "docker" "start" "-a" "9bfefe5375aa16bfc616638e1f8cfb85ab39882738b6d142bc2537100cc127d6", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr]   |
[INFO] [stderr]   = note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr]   = note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr]   = note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr]    Compiling proc-macro2 v1.0.60
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[INFO] [stderr]    Compiling unicode-ident v1.0.9
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[INFO] [stderr]     Checking learning_pin v0.1.0 (/opt/rustwide/workdir/learning_pin)
[INFO] [stderr]    Compiling openssl-sys v0.9.90
[INFO] [stderr]     Checking rand_chacha v0.3.1
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[INFO] [stderr]    Compiling structopt-derive v0.4.18
[INFO] [stderr]    Compiling tokio-macros v2.1.0
[INFO] [stderr]    Compiling tracing-attributes v0.1.26
[INFO] [stderr]    Compiling pin-project-internal v1.1.0
[INFO] [stderr]    Compiling async-stream-impl v0.3.5
[INFO] [stderr]    Compiling futures-macro v0.3.28
[INFO] [stderr]    Compiling openssl-macros v0.1.1
[INFO] [stderr]     Checking structopt v0.3.26
[INFO] [stderr]     Checking async-stream v0.3.5
[INFO] [stderr]     Checking tracing v0.1.37
[INFO] [stderr]     Checking tracing-subscriber v0.2.25
[INFO] [stderr]     Checking pin-project v1.1.0
[INFO] [stderr]     Checking tracing-futures v0.2.5
[INFO] [stderr]     Checking futures-executor v0.3.28
[INFO] [stderr]     Checking futures v0.3.28
[INFO] [stderr]     Checking my_own_future_and_executor v0.1.0 (/opt/rustwide/workdir/my_own_future_and_executor)
[INFO] [stderr]     Checking tokio-stream v0.1.14
[INFO] [stderr]     Checking tokio-util v0.7.8
[INFO] [stderr]     Checking tokio-native-tls v0.3.1
[INFO] [stderr]     Checking using_join_marco v0.1.0 (/opt/rustwide/workdir/using_join_marco)
[INFO] [stderr]     Checking using_like_goroutine v0.1.0 (/opt/rustwide/workdir/using_like_goroutine)
[INFO] [stderr]     Checking making_own_future v0.1.0 (/opt/rustwide/workdir/making_own_future)
[INFO] [stdout] warning: struct `Delay` is never constructed
[INFO] [stdout]   --> making_own_future/src/main.rs:34:8
[INFO] [stdout]    |
[INFO] [stdout] 34 | struct Delay {
[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]   --> making_own_future/src/main.rs:54:6
[INFO] [stdout]    |
[INFO] [stdout] 54 | enum MainFuture {
[INFO] [stdout]    |      ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `hello_` is never used
[INFO] [stdout]   --> making_own_future/src/main.rs:94:10
[INFO] [stdout]    |
[INFO] [stdout] 94 | async fn hello_() {
[INFO] [stdout]    |          ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Delay` is never constructed
[INFO] [stdout]   --> making_own_future/src/main.rs:34:8
[INFO] [stdout]    |
[INFO] [stdout] 34 | struct Delay {
[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]   --> making_own_future/src/main.rs:54:6
[INFO] [stdout]    |
[INFO] [stdout] 54 | enum MainFuture {
[INFO] [stdout]    |      ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `hello_` is never used
[INFO] [stdout]   --> making_own_future/src/main.rs:94:10
[INFO] [stdout]    |
[INFO] [stdout] 94 | async fn hello_() {
[INFO] [stdout]    |          ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking mini-redis v0.4.1
[INFO] [stderr]     Checking h2 v0.3.20
[INFO] [stderr]     Checking my-redis v0.1.0 (/opt/rustwide/workdir/my-redis)
[INFO] [stdout] warning: unused import: `lib::Connection`
[INFO] [stdout]  --> my-redis/src/bin/frame.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use lib::Connection;
[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: `lib::Connection`
[INFO] [stdout]  --> my-redis/src/bin/frame.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use lib::Connection;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking hyper v0.14.27
[INFO] [stderr]     Checking hyper-tls v0.5.0
[INFO] [stderr]     Checking reqwest v0.11.18
[INFO] [stderr]     Checking timer_wrapper_future v0.1.0 (/opt/rustwide/workdir/timer_wrapper_future)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 42.95s
[INFO] running `Command { std: "docker" "inspect" "9bfefe5375aa16bfc616638e1f8cfb85ab39882738b6d142bc2537100cc127d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9bfefe5375aa16bfc616638e1f8cfb85ab39882738b6d142bc2537100cc127d6", kill_on_drop: false }`
[INFO] [stdout] 9bfefe5375aa16bfc616638e1f8cfb85ab39882738b6d142bc2537100cc127d6