[INFO] cloning repository https://github.com/zupzup/async-explorations
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/zupzup/async-explorations" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzupzup%2Fasync-explorations", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzupzup%2Fasync-explorations'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9eb3c7bf1eba181555e652d92f154b3df53a3af0
[INFO] building zupzup/async-explorations against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzupzup%2Fasync-explorations" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/zupzup/async-explorations on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/zupzup/async-explorations
[INFO] finished tweaking git repo https://github.com/zupzup/async-explorations
[INFO] tweaked toml for git repo https://github.com/zupzup/async-explorations written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/zupzup/async-explorations 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" "+11663cd3bfefef7d34e8f0892c250bf698049392" "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-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bb6d3b9cde68e8731ee60fb61e6b9ab9fb57d12c083cbed19487751eae2175df
[INFO] running `Command { std: "docker" "start" "-a" "bb6d3b9cde68e8731ee60fb61e6b9ab9fb57d12c083cbed19487751eae2175df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bb6d3b9cde68e8731ee60fb61e6b9ab9fb57d12c083cbed19487751eae2175df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bb6d3b9cde68e8731ee60fb61e6b9ab9fb57d12c083cbed19487751eae2175df", kill_on_drop: false }`
[INFO] [stdout] bb6d3b9cde68e8731ee60fb61e6b9ab9fb57d12c083cbed19487751eae2175df
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fd44b40037a06436470a538a70a4cbaf4617f2ec5a3f19eb27771ae75e4f5ad2
[INFO] running `Command { std: "docker" "start" "-a" "fd44b40037a06436470a538a70a4cbaf4617f2ec5a3f19eb27771ae75e4f5ad2", kill_on_drop: false }`
[INFO] [stderr]    Compiling async-task v3.0.0
[INFO] [stderr]    Compiling waker v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.48s
[INFO] running `Command { std: "docker" "inspect" "fd44b40037a06436470a538a70a4cbaf4617f2ec5a3f19eb27771ae75e4f5ad2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fd44b40037a06436470a538a70a4cbaf4617f2ec5a3f19eb27771ae75e4f5ad2", kill_on_drop: false }`
[INFO] [stdout] fd44b40037a06436470a538a70a4cbaf4617f2ec5a3f19eb27771ae75e4f5ad2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f684fb40fe16d5effd4d694197ec9c8e250c3bdf337a31fd3867b30bd71d078d
[INFO] running `Command { std: "docker" "start" "-a" "f684fb40fe16d5effd4d694197ec9c8e250c3bdf337a31fd3867b30bd71d078d", kill_on_drop: false }`
[INFO] [stderr]    Compiling waker v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.29s
[INFO] running `Command { std: "docker" "inspect" "f684fb40fe16d5effd4d694197ec9c8e250c3bdf337a31fd3867b30bd71d078d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f684fb40fe16d5effd4d694197ec9c8e250c3bdf337a31fd3867b30bd71d078d", kill_on_drop: false }`
[INFO] [stdout] f684fb40fe16d5effd4d694197ec9c8e250c3bdf337a31fd3867b30bd71d078d