[INFO] fetching crate tractor 0.0.6...
[INFO] testing tractor-0.0.6 against master#b70888601af92f6cdc0364abab3446e418b91d36 for pr-86479
[INFO] extracting crate tractor 0.0.6 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate tractor 0.0.6 on toolchain b70888601af92f6cdc0364abab3446e418b91d36
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tractor 0.0.6
[INFO] finished tweaking crates.io crate tractor 0.0.6
[INFO] tweaked toml for crates.io crate tractor 0.0.6 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate tractor 0.0.6 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6fcf34adf4b3d44ef7dbe7fc1c8517f920990a46df1848a7b5c4662fc825fc96
[INFO] running `Command { std: "docker" "start" "-a" "6fcf34adf4b3d44ef7dbe7fc1c8517f920990a46df1848a7b5c4662fc825fc96", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6fcf34adf4b3d44ef7dbe7fc1c8517f920990a46df1848a7b5c4662fc825fc96", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6fcf34adf4b3d44ef7dbe7fc1c8517f920990a46df1848a7b5c4662fc825fc96", kill_on_drop: false }`
[INFO] [stdout] 6fcf34adf4b3d44ef7dbe7fc1c8517f920990a46df1848a7b5c4662fc825fc96
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 47674a2624502331025baf1be63cddb1ba12e1d3f2370da8e8cb79f52d8cb99f
[INFO] running `Command { std: "docker" "start" "-a" "47674a2624502331025baf1be63cddb1ba12e1d3f2370da8e8cb79f52d8cb99f", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.87
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling syn v1.0.60
[INFO] [stderr]    Compiling getrandom v0.2.2
[INFO] [stderr]    Compiling bytes v1.0.1
[INFO] [stderr]    Compiling futures-sink v0.3.13
[INFO] [stderr]    Compiling futures-core v0.3.13
[INFO] [stderr]    Compiling pin-project-lite v0.2.6
[INFO] [stderr]    Compiling lock_api v0.4.2
[INFO] [stderr]    Compiling instant v0.1.9
[INFO] [stderr]    Compiling tokio v1.2.0
[INFO] [stderr]    Compiling heck v0.3.2
[INFO] [stderr]    Compiling spinning_top v0.2.2
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling parking_lot_core v0.8.3
[INFO] [stderr]    Compiling signal-hook-registry v1.3.0
[INFO] [stderr]    Compiling mio v0.7.9
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling nanorand v0.5.2
[INFO] [stderr]    Compiling parking_lot v0.11.1
[INFO] [stderr]    Compiling pin-project-internal v1.0.5
[INFO] [stderr]    Compiling tokio-macros v1.1.0
[INFO] [stderr]    Compiling async-trait v0.1.42
[INFO] [stderr]    Compiling tractor-macros v0.0.6
[INFO] [stderr]    Compiling pin-project v1.0.5
[INFO] [stderr]    Compiling flume v0.10.2
[INFO] [stderr]    Compiling tractor v0.0.6 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 22.76s
[INFO] running `Command { std: "docker" "inspect" "47674a2624502331025baf1be63cddb1ba12e1d3f2370da8e8cb79f52d8cb99f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "47674a2624502331025baf1be63cddb1ba12e1d3f2370da8e8cb79f52d8cb99f", kill_on_drop: false }`
[INFO] [stdout] 47674a2624502331025baf1be63cddb1ba12e1d3f2370da8e8cb79f52d8cb99f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cef52082d28ab8ad6db4e6f5ba544d4056d74d8dc428738db7a10f9dd3dd41a9
[INFO] running `Command { std: "docker" "start" "-a" "cef52082d28ab8ad6db4e6f5ba544d4056d74d8dc428738db7a10f9dd3dd41a9", kill_on_drop: false }`
[INFO] [stderr]    Compiling tractor v0.0.6 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant is never constructed: `Sub`
[INFO] [stdout]   --> examples/accumulator.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     Sub { a: usize },
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `sub`
[INFO] [stdout]   --> examples/accumulator.rs:45:8
[INFO] [stdout]    |
[INFO] [stdout] 45 |     fn sub(&self, a: usize) {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Sub`
[INFO] [stdout]   --> examples/async_accumulator.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     Sub { a: usize },
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `sub`
[INFO] [stdout]   --> examples/async_accumulator.rs:48:8
[INFO] [stdout]    |
[INFO] [stdout] 48 |     fn sub(&self, a: usize) {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 5.61s
[INFO] running `Command { std: "docker" "inspect" "cef52082d28ab8ad6db4e6f5ba544d4056d74d8dc428738db7a10f9dd3dd41a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cef52082d28ab8ad6db4e6f5ba544d4056d74d8dc428738db7a10f9dd3dd41a9", kill_on_drop: false }`
[INFO] [stdout] cef52082d28ab8ad6db4e6f5ba544d4056d74d8dc428738db7a10f9dd3dd41a9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 4a0e4b3c1853752079e5106a503f681377a8d8b5fbb2ff22f233c197de32c2a2
[INFO] running `Command { std: "docker" "start" "-a" "4a0e4b3c1853752079e5106a503f681377a8d8b5fbb2ff22f233c197de32c2a2", kill_on_drop: false }`
[INFO] [stderr] warning: variant is never constructed: `Sub`
[INFO] [stderr]   --> examples/async_accumulator.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     Sub { a: usize },
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `sub`
[INFO] [stderr]   --> examples/async_accumulator.rs:48:8
[INFO] [stderr]    |
[INFO] [stderr] 48 |     fn sub(&self, a: usize) {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Sub`
[INFO] [stderr]   --> examples/accumulator.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 |     Sub { a: usize },
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `sub`
[INFO] [stderr]   --> examples/accumulator.rs:45:8
[INFO] [stderr]    |
[INFO] [stderr] 45 |     fn sub(&self, a: usize) {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `tractor` (example "async_accumulator") generated 2 warnings
[INFO] [stderr] warning: `tractor` (example "accumulator") generated 2 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/tractor-6e38d75166305b90)
[INFO] [stderr]    Doc-tests tractor
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "4a0e4b3c1853752079e5106a503f681377a8d8b5fbb2ff22f233c197de32c2a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4a0e4b3c1853752079e5106a503f681377a8d8b5fbb2ff22f233c197de32c2a2", kill_on_drop: false }`
[INFO] [stdout] 4a0e4b3c1853752079e5106a503f681377a8d8b5fbb2ff22f233c197de32c2a2