[INFO] fetching crate streamline 0.0.7...
[INFO] testing streamline-0.0.7 against try#eafdee2dfae8c2233b74f98b123308be7ccefcc6 for pr-79296
[INFO] extracting crate streamline 0.0.7 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate streamline 0.0.7 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 crates.io crate streamline 0.0.7
[INFO] finished tweaking crates.io crate streamline 0.0.7
[INFO] tweaked toml for crates.io crate streamline 0.0.7 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] 885611f40fd58b17ec4820137509dfccb92b67662525f1e928ae392f772785a0
[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" "885611f40fd58b17ec4820137509dfccb92b67662525f1e928ae392f772785a0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "885611f40fd58b17ec4820137509dfccb92b67662525f1e928ae392f772785a0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "885611f40fd58b17ec4820137509dfccb92b67662525f1e928ae392f772785a0", kill_on_drop: false }`
[INFO] [stdout] 885611f40fd58b17ec4820137509dfccb92b67662525f1e928ae392f772785a0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] c9679366888f8fa5df410e44702712bb0ec94a312a83b60eaf600cd4eb5bc7f3
[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" "c9679366888f8fa5df410e44702712bb0ec94a312a83b60eaf600cd4eb5bc7f3", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]    Compiling futures-core v0.3.8
[INFO] [stderr]    Compiling futures-sink v0.3.8
[INFO] [stderr]    Compiling async-trait v0.1.42
[INFO] [stderr]    Compiling futures-channel v0.3.8
[INFO] [stderr]    Compiling futures-macro v0.3.8
[INFO] [stderr]    Compiling futures-util v0.3.8
[INFO] [stderr]    Compiling futures-executor v0.3.8
[INFO] [stderr]    Compiling futures v0.3.8
[INFO] [stderr]    Compiling streamline v0.0.7 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]   --> src/streamline.rs:77:33
[INFO] [stdout]    |
[INFO] [stdout] 77 | / ...                   std::mem::replace(
[INFO] [stdout] 78 | | ...                       &mut state_machine.cancellation_handle,
[INFO] [stdout] 79 | | ...                       Some(reciever),
[INFO] [stdout] 80 | | ...                   );
[INFO] [stdout]    | |________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 17.14s
[INFO] running `Command { std: "docker" "inspect" "c9679366888f8fa5df410e44702712bb0ec94a312a83b60eaf600cd4eb5bc7f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c9679366888f8fa5df410e44702712bb0ec94a312a83b60eaf600cd4eb5bc7f3", kill_on_drop: false }`
[INFO] [stdout] c9679366888f8fa5df410e44702712bb0ec94a312a83b60eaf600cd4eb5bc7f3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 0e9b95ec5e1a52ff879954ae551df074c0a994296ea1ea5e64a33b38e3758e85
[INFO] running `Command { std: "docker" "start" "-a" "0e9b95ec5e1a52ff879954ae551df074c0a994296ea1ea5e64a33b38e3758e85", kill_on_drop: false }`
[INFO] [stderr]    Compiling tokio v0.2.23
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]   --> src/streamline.rs:77:33
[INFO] [stdout]    |
[INFO] [stdout] 77 | / ...                   std::mem::replace(
[INFO] [stdout] 78 | | ...                       &mut state_machine.cancellation_handle,
[INFO] [stdout] 79 | | ...                       Some(reciever),
[INFO] [stdout] 80 | | ...                   );
[INFO] [stdout]    | |________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling streamline v0.0.7 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 4.87s
[INFO] running `Command { std: "docker" "inspect" "0e9b95ec5e1a52ff879954ae551df074c0a994296ea1ea5e64a33b38e3758e85", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0e9b95ec5e1a52ff879954ae551df074c0a994296ea1ea5e64a33b38e3758e85", kill_on_drop: false }`
[INFO] [stdout] 0e9b95ec5e1a52ff879954ae551df074c0a994296ea1ea5e64a33b38e3758e85
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] ca4f508d2a228492ddfcdc91e86f957aa85db3a07eb57ec3bd193f88f6ab2fa4
[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" "ca4f508d2a228492ddfcdc91e86f957aa85db3a07eb57ec3bd193f88f6ab2fa4", kill_on_drop: false }`
[INFO] [stderr] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stderr]   --> src/streamline.rs:77:33
[INFO] [stderr]    |
[INFO] [stderr] 77 | / ...                   std::mem::replace(
[INFO] [stderr] 78 | | ...                       &mut state_machine.cancellation_handle,
[INFO] [stderr] 79 | | ...                       Some(reciever),
[INFO] [stderr] 80 | | ...                   );
[INFO] [stderr]    | |________________________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/cancel-cc69699a571cdc04
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test cancels ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/context-43a85e58bacce897
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test handles_context ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/down-ea0395eea685f128
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test completes_down ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/up-8bb892c92982b98c
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test completes_up ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "ca4f508d2a228492ddfcdc91e86f957aa85db3a07eb57ec3bd193f88f6ab2fa4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ca4f508d2a228492ddfcdc91e86f957aa85db3a07eb57ec3bd193f88f6ab2fa4", kill_on_drop: false }`
[INFO] [stdout] ca4f508d2a228492ddfcdc91e86f957aa85db3a07eb57ec3bd193f88f6ab2fa4