[INFO] cloning repository https://github.com/m-hamashita/tokio-practice
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/m-hamashita/tokio-practice" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fm-hamashita%2Ftokio-practice", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fm-hamashita%2Ftokio-practice'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 408d93d5c832418c7c915457bc24484f892d491f
[INFO] checking m-hamashita/tokio-practice against try#ac4c3613be2acd5395b65d85e5657b81e3c982f0 for pr-154585
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fm-hamashita%2Ftokio-practice" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/m-hamashita/tokio-practice
[INFO] finished tweaking git repo https://github.com/m-hamashita/tokio-practice
[INFO] tweaked toml for git repo https://github.com/m-hamashita/tokio-practice written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/m-hamashita/tokio-practice on toolchain ac4c3613be2acd5395b65d85e5657b81e3c982f0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ac4c3613be2acd5395b65d85e5657b81e3c982f0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/m-hamashita/tokio-practice 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" "+ac4c3613be2acd5395b65d85e5657b81e3c982f0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded relative-path v1.9.0
[INFO] [stderr]   Downloaded regex v1.9.6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+ac4c3613be2acd5395b65d85e5657b81e3c982f0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 92f6909b7ce4bc3665c8db4ec57d31aa529156c4c5d1471642cbc59583102f6d
[INFO] running `Command { std: "docker" "start" "-a" "92f6909b7ce4bc3665c8db4ec57d31aa529156c4c5d1471642cbc59583102f6d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "92f6909b7ce4bc3665c8db4ec57d31aa529156c4c5d1471642cbc59583102f6d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "92f6909b7ce4bc3665c8db4ec57d31aa529156c4c5d1471642cbc59583102f6d", kill_on_drop: false }`
[INFO] [stdout] 92f6909b7ce4bc3665c8db4ec57d31aa529156c4c5d1471642cbc59583102f6d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+ac4c3613be2acd5395b65d85e5657b81e3c982f0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 607cbda479a83258a376d5106a8fa7ab533825e2a2d9c0aab0bd367efc20198a
[INFO] running `Command { std: "docker" "start" "-a" "607cbda479a83258a376d5106a8fa7ab533825e2a2d9c0aab0bd367efc20198a", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.66
[INFO] [stderr]    Compiling unicode-ident v1.0.11
[INFO] [stderr]    Compiling libc v0.2.148
[INFO] [stderr]     Checking memchr v2.6.3
[INFO] [stderr]    Compiling semver v1.0.19
[INFO] [stderr]    Compiling regex-syntax v0.7.5
[INFO] [stderr]     Checking gimli v0.28.0
[INFO] [stderr]    Compiling relative-path v1.9.0
[INFO] [stderr]     Checking miniz_oxide v0.7.1
[INFO] [stderr]    Compiling anyhow v1.0.75
[INFO] [stderr]     Checking futures-timer v3.0.2
[INFO] [stderr]     Checking object v0.32.1
[INFO] [stderr]    Compiling aho-corasick v1.1.1
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]    Compiling rstest_macros v0.18.2
[INFO] [stderr]     Checking num_cpus v1.16.0
[INFO] [stderr]     Checking mio v0.8.8
[INFO] [stderr]     Checking signal-hook-registry v1.4.1
[INFO] [stderr]    Compiling syn v2.0.31
[INFO] [stderr]    Compiling cc v1.0.83
[INFO] [stderr]    Compiling backtrace v0.3.69
[INFO] [stderr]    Compiling regex-automata v0.3.9
[INFO] [stderr]     Checking addr2line v0.21.0
[INFO] [stderr]    Compiling regex v1.9.6
[INFO] [stderr]    Compiling futures-macro v0.3.28
[INFO] [stderr]    Compiling tokio-macros v2.1.0
[INFO] [stderr]     Checking tokio v1.32.0
[INFO] [stderr]     Checking futures-util v0.3.28
[INFO] [stderr]     Checking futures-executor v0.3.28
[INFO] [stderr]     Checking futures v0.3.28
[INFO] [stderr]     Checking rstest v0.18.2
[INFO] [stderr]     Checking tokio-practice v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `spawn_blocking` is never used
[INFO] [stdout]  --> src/spawn.rs:8:14
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub async fn spawn_blocking<F, T>(
[INFO] [stdout]   |              ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.15s
[INFO] running `Command { std: "docker" "inspect" "607cbda479a83258a376d5106a8fa7ab533825e2a2d9c0aab0bd367efc20198a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "607cbda479a83258a376d5106a8fa7ab533825e2a2d9c0aab0bd367efc20198a", kill_on_drop: false }`
[INFO] [stdout] 607cbda479a83258a376d5106a8fa7ab533825e2a2d9c0aab0bd367efc20198a