[INFO] cloning repository https://github.com/polachok/test-tokio-fairness
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/polachok/test-tokio-fairness" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpolachok%2Ftest-tokio-fairness", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpolachok%2Ftest-tokio-fairness'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] dcc70c553cf8e3a08b6739a2280a7b235d63386c
[INFO] testing polachok/test-tokio-fairness against try#eafdee2dfae8c2233b74f98b123308be7ccefcc6 for pr-79296
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpolachok%2Ftest-tokio-fairness" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/polachok/test-tokio-fairness on toolchain eafdee2dfae8c2233b74f98b123308be7ccefcc6
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/polachok/test-tokio-fairness
[INFO] finished tweaking git repo https://github.com/polachok/test-tokio-fairness
[INFO] tweaked toml for git repo https://github.com/polachok/test-tokio-fairness written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/polachok/test-tokio-fairness already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded scheduler v0.1.3
[INFO] [stderr]   Downloaded errno v0.2.4
[INFO] [stderr]   Downloaded tsc v0.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 810f8a1cf90fa92dfb5b93f75648ff6be946570332d207641ac8ad0fa51c6e1c
[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" "810f8a1cf90fa92dfb5b93f75648ff6be946570332d207641ac8ad0fa51c6e1c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "810f8a1cf90fa92dfb5b93f75648ff6be946570332d207641ac8ad0fa51c6e1c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "810f8a1cf90fa92dfb5b93f75648ff6be946570332d207641ac8ad0fa51c6e1c", kill_on_drop: false }`
[INFO] [stdout] 810f8a1cf90fa92dfb5b93f75648ff6be946570332d207641ac8ad0fa51c6e1c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4d1ccd1ca0f9c7b5b14c0eb0c9814716f28bdc9c9ffb1315f73e172011eeebde
[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" "4d1ccd1ca0f9c7b5b14c0eb0c9814716f28bdc9c9ffb1315f73e172011eeebde", kill_on_drop: false }`
[INFO] [stderr]    Compiling futures v0.1.23
[INFO] [stderr]    Compiling scopeguard v0.3.3
[INFO] [stderr]    Compiling crossbeam-utils v0.5.0
[INFO] [stderr]    Compiling rand_core v0.2.1
[INFO] [stderr]    Compiling byteorder v1.2.6
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling slab v0.4.1
[INFO] [stderr]    Compiling lazycell v0.6.0
[INFO] [stderr]    Compiling nodrop v0.1.12
[INFO] [stderr]    Compiling memoffset v0.2.1
[INFO] [stderr]    Compiling cc v1.0.23
[INFO] [stderr]    Compiling iovec v0.1.2
[INFO] [stderr]    Compiling num_cpus v1.8.0
[INFO] [stderr]    Compiling errno v0.2.4
[INFO] [stderr]    Compiling log v0.4.5
[INFO] [stderr]    Compiling net2 v0.2.33
[INFO] [stderr]    Compiling owning_ref v0.3.3
[INFO] [stderr]    Compiling unreachable v1.0.0
[INFO] [stderr]    Compiling arrayvec v0.4.7
[INFO] [stderr]    Compiling scheduler v0.1.3
[INFO] [stderr]    Compiling smallvec v0.6.5
[INFO] [stderr]    Compiling lock_api v0.1.3
[INFO] [stderr]    Compiling rand v0.5.5
[INFO] [stderr]    Compiling bytes v0.4.9
[INFO] [stderr]    Compiling mio v0.6.15
[INFO] [stderr]    Compiling crossbeam-epoch v0.5.2
[INFO] [stderr]    Compiling crossbeam-deque v0.6.1
[INFO] [stderr]    Compiling tsc v0.1.0
[INFO] [stderr]    Compiling mio-uds v0.6.6
[INFO] [stderr]    Compiling parking_lot_core v0.3.0
[INFO] [stderr]    Compiling parking_lot v0.6.4
[INFO] [stderr]    Compiling tokio-executor v0.1.4
[INFO] [stderr]    Compiling tokio-io v0.1.8
[INFO] [stderr]    Compiling tokio-threadpool v0.1.6
[INFO] [stderr]    Compiling tokio-current-thread v0.1.1
[INFO] [stderr]    Compiling tokio-timer v0.2.6
[INFO] [stderr]    Compiling tokio-reactor v0.1.5
[INFO] [stderr]    Compiling tokio-codec v0.1.0
[INFO] [stderr]    Compiling tokio-udp v0.1.2
[INFO] [stderr]    Compiling tokio-uds v0.2.1
[INFO] [stderr]    Compiling tokio-tcp v0.1.1
[INFO] [stderr]    Compiling tokio-fs v0.1.3
[INFO] [stderr]    Compiling tokio v0.1.8
[INFO] [stderr]    Compiling test-tokio-fairness v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `TcpStream`
[INFO] [stdout]   --> src/main.rs:98:30
[INFO] [stdout]    |
[INFO] [stdout] 98 |     use mio::net::{TcpListener, TcpStream};
[INFO] [stdout]    |                                 ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `TcpStream`
[INFO] [stdout]    --> src/main.rs:158:30
[INFO] [stdout]     |
[INFO] [stdout] 158 |     use mio::net::{TcpListener, TcpStream};
[INFO] [stdout]     |                                 ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/main.rs:230:47
[INFO] [stdout]     |
[INFO] [stdout] 230 |             }).or_else(move |err| { panic!("{}", err); Ok(Loop::Break(())) })
[INFO] [stdout]     |                                     ------------------ ^^^^^^^^^^^^^^^^^^^ unreachable expression
[INFO] [stdout]     |                                     |
[INFO] [stdout]     |                                     any code following this expression is unreachable
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 18.25s
[INFO] running `Command { std: "docker" "inspect" "4d1ccd1ca0f9c7b5b14c0eb0c9814716f28bdc9c9ffb1315f73e172011eeebde", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4d1ccd1ca0f9c7b5b14c0eb0c9814716f28bdc9c9ffb1315f73e172011eeebde", kill_on_drop: false }`
[INFO] [stdout] 4d1ccd1ca0f9c7b5b14c0eb0c9814716f28bdc9c9ffb1315f73e172011eeebde
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d3580a499c6d051c053f2307d3764b3862e1ebda8e1d83ec3d671f85cb578479
[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" "d3580a499c6d051c053f2307d3764b3862e1ebda8e1d83ec3d671f85cb578479", kill_on_drop: false }`
[INFO] [stderr]    Compiling test-tokio-fairness v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `TcpStream`
[INFO] [stdout]   --> src/main.rs:98:30
[INFO] [stdout]    |
[INFO] [stdout] 98 |     use mio::net::{TcpListener, TcpStream};
[INFO] [stdout]    |                                 ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `TcpStream`
[INFO] [stdout]    --> src/main.rs:158:30
[INFO] [stdout]     |
[INFO] [stdout] 158 |     use mio::net::{TcpListener, TcpStream};
[INFO] [stdout]     |                                 ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/main.rs:230:47
[INFO] [stdout]     |
[INFO] [stdout] 230 |             }).or_else(move |err| { panic!("{}", err); Ok(Loop::Break(())) })
[INFO] [stdout]     |                                     ------------------ ^^^^^^^^^^^^^^^^^^^ unreachable expression
[INFO] [stdout]     |                                     |
[INFO] [stdout]     |                                     any code following this expression is unreachable
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.59s
[INFO] running `Command { std: "docker" "inspect" "d3580a499c6d051c053f2307d3764b3862e1ebda8e1d83ec3d671f85cb578479", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d3580a499c6d051c053f2307d3764b3862e1ebda8e1d83ec3d671f85cb578479", kill_on_drop: false }`
[INFO] [stdout] d3580a499c6d051c053f2307d3764b3862e1ebda8e1d83ec3d671f85cb578479
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 002cc8df62855057b34baaad0e69823e048c34cdfaf171a1cf2d1b575903ad8e
[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" "002cc8df62855057b34baaad0e69823e048c34cdfaf171a1cf2d1b575903ad8e", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `TcpStream`
[INFO] [stderr]   --> src/main.rs:98:30
[INFO] [stderr]    |
[INFO] [stderr] 98 |     use mio::net::{TcpListener, TcpStream};
[INFO] [stderr]    |                                 ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `TcpStream`
[INFO] [stderr]    --> src/main.rs:158:30
[INFO] [stderr]     |
[INFO] [stderr] 158 |     use mio::net::{TcpListener, TcpStream};
[INFO] [stderr]     |                                 ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable expression
[INFO] [stderr]    --> src/main.rs:230:47
[INFO] [stderr]     |
[INFO] [stderr] 230 |             }).or_else(move |err| { panic!("{}", err); Ok(Loop::Break(())) })
[INFO] [stderr]     |                                     ------------------ ^^^^^^^^^^^^^^^^^^^ unreachable expression
[INFO] [stderr]     |                                     |
[INFO] [stderr]     |                                     any code following this expression is unreachable
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/test_tokio_fairness-a865b52136f8cf93
[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
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "002cc8df62855057b34baaad0e69823e048c34cdfaf171a1cf2d1b575903ad8e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "002cc8df62855057b34baaad0e69823e048c34cdfaf171a1cf2d1b575903ad8e", kill_on_drop: false }`
[INFO] [stdout] 002cc8df62855057b34baaad0e69823e048c34cdfaf171a1cf2d1b575903ad8e