[INFO] cloning repository https://github.com/benhansen-io/mpsc_deadlock_reproducer
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/benhansen-io/mpsc_deadlock_reproducer" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbenhansen-io%2Fmpsc_deadlock_reproducer", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbenhansen-io%2Fmpsc_deadlock_reproducer'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5988d9193c315e8324909cde8717fe97d62fcf96
[INFO] building benhansen-io/mpsc_deadlock_reproducer 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%2Fbenhansen-io%2Fmpsc_deadlock_reproducer" "/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/benhansen-io/mpsc_deadlock_reproducer 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/benhansen-io/mpsc_deadlock_reproducer
[INFO] finished tweaking git repo https://github.com/benhansen-io/mpsc_deadlock_reproducer
[INFO] tweaked toml for git repo https://github.com/benhansen-io/mpsc_deadlock_reproducer written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/benhansen-io/mpsc_deadlock_reproducer 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]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded thread-priority v0.13.1
[INFO] [stderr]   Downloaded core_affinity v0.8.0
[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] b5360bd9bbbae86629d3d5de694190505991a7b1df612046265df4da4192cd68
[INFO] running `Command { std: "docker" "start" "-a" "b5360bd9bbbae86629d3d5de694190505991a7b1df612046265df4da4192cd68", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b5360bd9bbbae86629d3d5de694190505991a7b1df612046265df4da4192cd68", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b5360bd9bbbae86629d3d5de694190505991a7b1df612046265df4da4192cd68", kill_on_drop: false }`
[INFO] [stdout] b5360bd9bbbae86629d3d5de694190505991a7b1df612046265df4da4192cd68
[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] 6897d6019b8de8f2377f3430ebd0d3301f31625c0dccd79bd84ea4e721071915
[INFO] running `Command { std: "docker" "start" "-a" "6897d6019b8de8f2377f3430ebd0d3301f31625c0dccd79bd84ea4e721071915", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.146
[INFO] [stderr]    Compiling rustversion v1.0.12
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling log v0.4.19
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling num_cpus v1.15.0
[INFO] [stderr]    Compiling thread-priority v0.13.1
[INFO] [stderr]    Compiling core_affinity v0.8.0
[INFO] [stderr]    Compiling mpsc_deadlock_reproducer v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.10s
[INFO] running `Command { std: "docker" "inspect" "6897d6019b8de8f2377f3430ebd0d3301f31625c0dccd79bd84ea4e721071915", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6897d6019b8de8f2377f3430ebd0d3301f31625c0dccd79bd84ea4e721071915", kill_on_drop: false }`
[INFO] [stdout] 6897d6019b8de8f2377f3430ebd0d3301f31625c0dccd79bd84ea4e721071915
[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] e70a3dc44769a399f3e50ab85161dd8092dd132f8495423a0583f5a9b25c1ae7
[INFO] running `Command { std: "docker" "start" "-a" "e70a3dc44769a399f3e50ab85161dd8092dd132f8495423a0583f5a9b25c1ae7", kill_on_drop: false }`
[INFO] [stderr]    Compiling mpsc_deadlock_reproducer v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.09s
[INFO] running `Command { std: "docker" "inspect" "e70a3dc44769a399f3e50ab85161dd8092dd132f8495423a0583f5a9b25c1ae7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e70a3dc44769a399f3e50ab85161dd8092dd132f8495423a0583f5a9b25c1ae7", kill_on_drop: false }`
[INFO] [stdout] e70a3dc44769a399f3e50ab85161dd8092dd132f8495423a0583f5a9b25c1ae7