[INFO] cloning repository https://github.com/joeldudley/obamas_head
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/joeldudley/obamas_head" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjoeldudley%2Fobamas_head", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjoeldudley%2Fobamas_head'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9ba104a08f8b0e116ccc183fe3af3239731e15a0
[INFO] testing joeldudley/obamas_head against try#ecabaf78506b7a4668d42dc20268c086b93f0fad for pr-87041
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjoeldudley%2Fobamas_head" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/joeldudley/obamas_head on toolchain ecabaf78506b7a4668d42dc20268c086b93f0fad
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/joeldudley/obamas_head
[INFO] finished tweaking git repo https://github.com/joeldudley/obamas_head
[INFO] tweaked toml for git repo https://github.com/joeldudley/obamas_head written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/joeldudley/obamas_head already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 20f0f9a953b23c1677d9dc1b563b68fdfdc15ad7fe24d61316322e5fec378758
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "20f0f9a953b23c1677d9dc1b563b68fdfdc15ad7fe24d61316322e5fec378758", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "20f0f9a953b23c1677d9dc1b563b68fdfdc15ad7fe24d61316322e5fec378758", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "20f0f9a953b23c1677d9dc1b563b68fdfdc15ad7fe24d61316322e5fec378758", kill_on_drop: false }`
[INFO] [stdout] 20f0f9a953b23c1677d9dc1b563b68fdfdc15ad7fe24d61316322e5fec378758
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 57ecf61fb694c9851d2708cd7915be306344f5f1d36a5d464b0fcee8c06e3993
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "57ecf61fb694c9851d2708cd7915be306344f5f1d36a5d464b0fcee8c06e3993", kill_on_drop: false }`
[INFO] [stderr]    Compiling obamas_head v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `sender`
[INFO] [stdout]   --> src/main.rs:24:10
[INFO] [stdout]    |
[INFO] [stdout] 24 |     let (sender, receiver): (Sender<bool>, Receiver<bool>) = mpsc::channel();
[INFO] [stdout]    |          ^^^^^^ help: if this is intentional, prefix it with an underscore: `_sender`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `receiver`
[INFO] [stdout]   --> src/main.rs:38:52
[INFO] [stdout]    |
[INFO] [stdout] 38 | fn handle_incoming_requests(listener: TcpListener, receiver: Receiver<bool>) {
[INFO] [stdout]    |                                                    ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_receiver`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 28 |     listener_thread_handle.join();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.33s
[INFO] running `Command { std: "docker" "inspect" "57ecf61fb694c9851d2708cd7915be306344f5f1d36a5d464b0fcee8c06e3993", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "57ecf61fb694c9851d2708cd7915be306344f5f1d36a5d464b0fcee8c06e3993", kill_on_drop: false }`
[INFO] [stdout] 57ecf61fb694c9851d2708cd7915be306344f5f1d36a5d464b0fcee8c06e3993
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4621982154e6e2c2b6a9cbd8085c0a021fb594e0d79f2a959abd05b8d02b7abc
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "4621982154e6e2c2b6a9cbd8085c0a021fb594e0d79f2a959abd05b8d02b7abc", kill_on_drop: false }`
[INFO] [stderr]    Compiling obamas_head v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `sender`
[INFO] [stdout]   --> src/main.rs:24:10
[INFO] [stdout]    |
[INFO] [stdout] 24 |     let (sender, receiver): (Sender<bool>, Receiver<bool>) = mpsc::channel();
[INFO] [stdout]    |          ^^^^^^ help: if this is intentional, prefix it with an underscore: `_sender`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `receiver`
[INFO] [stdout]   --> src/main.rs:38:52
[INFO] [stdout]    |
[INFO] [stdout] 38 | fn handle_incoming_requests(listener: TcpListener, receiver: Receiver<bool>) {
[INFO] [stdout]    |                                                    ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_receiver`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 28 |     listener_thread_handle.join();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.91s
[INFO] running `Command { std: "docker" "inspect" "4621982154e6e2c2b6a9cbd8085c0a021fb594e0d79f2a959abd05b8d02b7abc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4621982154e6e2c2b6a9cbd8085c0a021fb594e0d79f2a959abd05b8d02b7abc", kill_on_drop: false }`
[INFO] [stdout] 4621982154e6e2c2b6a9cbd8085c0a021fb594e0d79f2a959abd05b8d02b7abc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 1ca6c8fc1cce9f393e74fc985d2a608b66c98f4fe2890447d334e63997ebd6cf
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "1ca6c8fc1cce9f393e74fc985d2a608b66c98f4fe2890447d334e63997ebd6cf", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `sender`
[INFO] [stderr]   --> src/main.rs:24:10
[INFO] [stderr]    |
[INFO] [stderr] 24 |     let (sender, receiver): (Sender<bool>, Receiver<bool>) = mpsc::channel();
[INFO] [stderr]    |          ^^^^^^ help: if this is intentional, prefix it with an underscore: `_sender`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `receiver`
[INFO] [stderr]   --> src/main.rs:38:52
[INFO] [stderr]    |
[INFO] [stderr] 38 | fn handle_incoming_requests(listener: TcpListener, receiver: Receiver<bool>) {
[INFO] [stderr]    |                                                    ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_receiver`
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/main.rs:28:5
[INFO] [stderr]    |
[INFO] [stderr] 28 |     listener_thread_handle.join();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/obamas_head-358d3a0c1aa103d4)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::server_listens_on_separate_thread has been running for over 60 seconds
[ERROR] error running command: no output for 300 seconds
[INFO] running `Command { std: "docker" "inspect" "1ca6c8fc1cce9f393e74fc985d2a608b66c98f4fe2890447d334e63997ebd6cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1ca6c8fc1cce9f393e74fc985d2a608b66c98f4fe2890447d334e63997ebd6cf", kill_on_drop: false }`
[INFO] [stdout] 1ca6c8fc1cce9f393e74fc985d2a608b66c98f4fe2890447d334e63997ebd6cf