[INFO] cloning repository https://github.com/raohassan4212/async-in-practice
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/raohassan4212/async-in-practice" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fraohassan4212%2Fasync-in-practice", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fraohassan4212%2Fasync-in-practice'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2d7973bedab941fe72e910840897b18c585dc53d
[INFO] checking raohassan4212/async-in-practice against master#350d0ef0ec0493e6d21cfb265cb8211a0e74d766 for pr-145342
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fraohassan4212%2Fasync-in-practice" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/raohassan4212/async-in-practice
[INFO] finished tweaking git repo https://github.com/raohassan4212/async-in-practice
[INFO] tweaked toml for git repo https://github.com/raohassan4212/async-in-practice written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/raohassan4212/async-in-practice on toolchain 350d0ef0ec0493e6d21cfb265cb8211a0e74d766
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/raohassan4212/async-in-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" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded pin-project-lite v0.1.9
[INFO] [stderr]   Downloaded async-io v1.1.4
[INFO] [stderr]   Downloaded pin-project-internal v0.4.24
[INFO] [stderr]   Downloaded proc-macro2 v1.0.23
[INFO] [stderr]   Downloaded pin-project v0.4.24
[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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bdd90794ccd1fdd3999ccb61568f233e26a9850eaaf227e65b4c3cc2cd775788
[INFO] running `Command { std: "docker" "start" "-a" "bdd90794ccd1fdd3999ccb61568f233e26a9850eaaf227e65b4c3cc2cd775788", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bdd90794ccd1fdd3999ccb61568f233e26a9850eaaf227e65b4c3cc2cd775788", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bdd90794ccd1fdd3999ccb61568f233e26a9850eaaf227e65b4c3cc2cd775788", kill_on_drop: false }`
[INFO] [stdout] bdd90794ccd1fdd3999ccb61568f233e26a9850eaaf227e65b4c3cc2cd775788
[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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 10b7f597ea67ef910ed84584adbb1f0c1e199fc0556dfa3e78cc86c99fa67043
[INFO] running `Command { std: "docker" "start" "-a" "10b7f597ea67ef910ed84584adbb1f0c1e199fc0556dfa3e78cc86c99fa67043", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]     Checking futures-core v0.3.5
[INFO] [stderr]    Compiling proc-macro2 v1.0.23
[INFO] [stderr]     Checking futures-io v0.3.5
[INFO] [stderr]     Checking once_cell v1.4.1
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.42
[INFO] [stderr]    Compiling libc v0.2.77
[INFO] [stderr]     Checking cache-padded v1.1.1
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]     Checking fastrand v1.3.5
[INFO] [stderr]     Checking pin-project-lite v0.1.9
[INFO] [stderr]     Checking concurrent-queue v1.2.2
[INFO] [stderr]    Compiling pin-project-internal v0.4.24
[INFO] [stderr]     Checking parking v2.0.0
[INFO] [stderr]     Checking waker-fn v1.1.0
[INFO] [stderr]    Compiling proc-macro-nested v0.1.6
[INFO] [stderr]     Checking futures-sink v0.3.5
[INFO] [stderr]     Checking vec-arena v1.0.0
[INFO] [stderr]     Checking slab v0.4.2
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]     Checking event-listener v2.5.1
[INFO] [stderr]     Checking futures-lite v1.8.0
[INFO] [stderr]    Compiling proc-macro-hack v0.5.18
[INFO] [stderr]     Checking futures-channel v0.3.5
[INFO] [stderr]     Checking futures-task v0.3.5
[INFO] [stderr]     Checking async-task v4.0.2
[INFO] [stderr]     Checking async-channel v1.4.2
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]     Checking atomic-waker v1.0.0
[INFO] [stderr]     Checking async-mutex v1.4.0
[INFO] [stderr]     Checking kv-log-macro v1.0.7
[INFO] [stderr]     Checking nb-connect v1.0.0
[INFO] [stderr]     Checking polling v1.1.0
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking async-executor v1.3.0
[INFO] [stderr]     Checking async-io v1.1.4
[INFO] [stderr]     Checking blocking v1.0.0
[INFO] [stderr]     Checking async-global-executor v1.3.0
[INFO] [stderr]     Checking async-std v1.6.5
[INFO] [stderr]    Compiling futures-macro v0.3.5
[INFO] [stderr]     Checking pin-project v0.4.24
[INFO] [stderr]     Checking futures-util v0.3.5
[INFO] [stderr]     Checking futures-executor v0.3.5
[INFO] [stderr]     Checking futures v0.3.5
[INFO] [stderr]     Checking Q3 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `futures::executor::block_on`
[INFO] [stdout]    --> src/main.rs:153:5
[INFO] [stdout]     |
[INFO] [stdout] 153 | use futures::executor::block_on;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `futures::executor::block_on`
[INFO] [stdout]    --> src/main.rs:153:5
[INFO] [stdout]     |
[INFO] [stdout] 153 | use futures::executor::block_on;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 21.12s
[INFO] running `Command { std: "docker" "inspect" "10b7f597ea67ef910ed84584adbb1f0c1e199fc0556dfa3e78cc86c99fa67043", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "10b7f597ea67ef910ed84584adbb1f0c1e199fc0556dfa3e78cc86c99fa67043", kill_on_drop: false }`
[INFO] [stdout] 10b7f597ea67ef910ed84584adbb1f0c1e199fc0556dfa3e78cc86c99fa67043
