[INFO] cloning repository https://github.com/dimitarvp/rust-async-examples
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dimitarvp/rust-async-examples" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdimitarvp%2Frust-async-examples", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdimitarvp%2Frust-async-examples'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] cd769e0945ea620282c0c163ea4109a07e7b95e1
[INFO] checking dimitarvp/rust-async-examples against master#3cdcdaf31b45f8045164aae9604573d23091970b for pr-122267
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdimitarvp%2Frust-async-examples" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dimitarvp/rust-async-examples on toolchain 3cdcdaf31b45f8045164aae9604573d23091970b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3cdcdaf31b45f8045164aae9604573d23091970b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/dimitarvp/rust-async-examples
[INFO] finished tweaking git repo https://github.com/dimitarvp/rust-async-examples
[INFO] tweaked toml for git repo https://github.com/dimitarvp/rust-async-examples written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/dimitarvp/rust-async-examples 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" "+3cdcdaf31b45f8045164aae9604573d23091970b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[ERROR] this task or one of its parent failed!
[ERROR] no output for 300 seconds
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.
[INFO] checking dimitarvp/rust-async-examples against try#05804f728f276cf7ecedbf71c814df440d37f293 for pr-122267
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdimitarvp%2Frust-async-examples" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dimitarvp/rust-async-examples on toolchain 05804f728f276cf7ecedbf71c814df440d37f293
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+05804f728f276cf7ecedbf71c814df440d37f293" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/dimitarvp/rust-async-examples
[INFO] finished tweaking git repo https://github.com/dimitarvp/rust-async-examples
[INFO] tweaked toml for git repo https://github.com/dimitarvp/rust-async-examples written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/dimitarvp/rust-async-examples 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" "+05804f728f276cf7ecedbf71c814df440d37f293" "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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+05804f728f276cf7ecedbf71c814df440d37f293" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3cc316da4803cf6cbf45d7c9f901121b7ac22e9d5f3f680d2a17bd7855c34db5
[INFO] running `Command { std: "docker" "start" "-a" "3cc316da4803cf6cbf45d7c9f901121b7ac22e9d5f3f680d2a17bd7855c34db5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3cc316da4803cf6cbf45d7c9f901121b7ac22e9d5f3f680d2a17bd7855c34db5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3cc316da4803cf6cbf45d7c9f901121b7ac22e9d5f3f680d2a17bd7855c34db5", kill_on_drop: false }`
[INFO] [stdout] 3cc316da4803cf6cbf45d7c9f901121b7ac22e9d5f3f680d2a17bd7855c34db5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+05804f728f276cf7ecedbf71c814df440d37f293" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d6e39186d4a1c3c3319e885d6fd9d02447f821cfd5536b64f9f4929c4774edef
[INFO] running `Command { std: "docker" "start" "-a" "d6e39186d4a1c3c3319e885d6fd9d02447f821cfd5536b64f9f4929c4774edef", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.43
[INFO] [stderr]    Compiling libc v0.2.132
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]    Compiling unicode-ident v1.0.3
[INFO] [stderr]    Compiling syn v1.0.99
[INFO] [stderr]    Compiling futures-core v0.3.24
[INFO] [stderr]    Compiling lock_api v0.4.8
[INFO] [stderr]    Compiling parking_lot_core v0.9.3
[INFO] [stderr]     Checking pin-project-lite v0.2.9
[INFO] [stderr]     Checking futures-sink v0.3.24
[INFO] [stderr]    Compiling slab v0.4.7
[INFO] [stderr]     Checking smallvec v1.9.0
[INFO] [stderr]    Compiling futures-channel v0.3.24
[INFO] [stderr]    Compiling futures-task v0.3.24
[INFO] [stderr]    Compiling tokio v1.21.0
[INFO] [stderr]    Compiling futures-util v0.3.24
[INFO] [stderr]     Checking futures-io v0.3.24
[INFO] [stderr]     Checking bytes v1.2.1
[INFO] [stderr]     Checking once_cell v1.14.0
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking regex-syntax v0.6.27
[INFO] [stderr]     Checking mio v0.8.4
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking socket2 v0.4.7
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]     Checking regex v1.6.0
[INFO] [stderr]     Checking env_logger v0.9.0
[INFO] [stderr]    Compiling tokio-macros v1.8.0
[INFO] [stderr]    Compiling futures-macro v0.3.24
[INFO] [stderr]    Compiling async-stream-impl v0.3.3
[INFO] [stderr]     Checking async-stream v0.3.3
[INFO] [stderr]     Checking futures-executor v0.3.24
[INFO] [stderr]     Checking futures v0.3.24
[INFO] [stderr]     Checking tokio-util v0.7.4
[INFO] [stderr]     Checking tokio-stream v0.1.10
[INFO] [stderr]     Checking async-examples v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 12.06s
[INFO] running `Command { std: "docker" "inspect" "d6e39186d4a1c3c3319e885d6fd9d02447f821cfd5536b64f9f4929c4774edef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d6e39186d4a1c3c3319e885d6fd9d02447f821cfd5536b64f9f4929c4774edef", kill_on_drop: false }`
[INFO] [stdout] d6e39186d4a1c3c3319e885d6fd9d02447f821cfd5536b64f9f4929c4774edef