[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#722e1797249a965b6335aebd65d777f917e498f1 for pr-91031
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjoeldudley%2Fobamas_head" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/joeldudley/obamas_head on toolchain 722e1797249a965b6335aebd65d777f917e498f1
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "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-1/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" "+722e1797249a965b6335aebd65d777f917e498f1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] c33e48957fb75f68967f53962b2eaaf5278fc5f59dd509f4189ffeebf2a99f1b
[INFO] running `Command { std: "docker" "start" "-a" "c33e48957fb75f68967f53962b2eaaf5278fc5f59dd509f4189ffeebf2a99f1b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c33e48957fb75f68967f53962b2eaaf5278fc5f59dd509f4189ffeebf2a99f1b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c33e48957fb75f68967f53962b2eaaf5278fc5f59dd509f4189ffeebf2a99f1b", kill_on_drop: false }`
[INFO] [stdout] c33e48957fb75f68967f53962b2eaaf5278fc5f59dd509f4189ffeebf2a99f1b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] adb1a7a3dab5f9512a28fe997983e9b1017c57774dbeaa6dc053c66c1b5f3535
[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" "adb1a7a3dab5f9512a28fe997983e9b1017c57774dbeaa6dc053c66c1b5f3535", 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 2.03s
[INFO] running `Command { std: "docker" "inspect" "adb1a7a3dab5f9512a28fe997983e9b1017c57774dbeaa6dc053c66c1b5f3535", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "adb1a7a3dab5f9512a28fe997983e9b1017c57774dbeaa6dc053c66c1b5f3535", kill_on_drop: false }`
[INFO] [stdout] adb1a7a3dab5f9512a28fe997983e9b1017c57774dbeaa6dc053c66c1b5f3535
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] a6df02cfc3d9194ae88fff6ce628e198cd1d57d7e3ab1c3ec99582467c63876e
[INFO] running `Command { std: "docker" "start" "-a" "a6df02cfc3d9194ae88fff6ce628e198cd1d57d7e3ab1c3ec99582467c63876e", 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 1.80s
[INFO] running `Command { std: "docker" "inspect" "a6df02cfc3d9194ae88fff6ce628e198cd1d57d7e3ab1c3ec99582467c63876e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a6df02cfc3d9194ae88fff6ce628e198cd1d57d7e3ab1c3ec99582467c63876e", kill_on_drop: false }`
[INFO] [stdout] a6df02cfc3d9194ae88fff6ce628e198cd1d57d7e3ab1c3ec99582467c63876e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] eb90edb6df567876826f68ac162658ef8eaa75f846d4727b66f8b30d6c8737c5
[INFO] running `Command { std: "docker" "start" "-a" "eb90edb6df567876826f68ac162658ef8eaa75f846d4727b66f8b30d6c8737c5", 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: `obamas_head` (bin "obamas_head" test) generated 3 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/obamas_head-e547f46230f8a206)
[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" "eb90edb6df567876826f68ac162658ef8eaa75f846d4727b66f8b30d6c8737c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eb90edb6df567876826f68ac162658ef8eaa75f846d4727b66f8b30d6c8737c5", kill_on_drop: false }`
[INFO] [stdout] eb90edb6df567876826f68ac162658ef8eaa75f846d4727b66f8b30d6c8737c5