[INFO] fetching crate streamline 0.0.7...
[INFO] testing streamline-0.0.7 against 1.90.0 for beta-1.91-3
[INFO] extracting crate streamline 0.0.7 into /workspace/builds/worker-3-tc1/source
[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-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate streamline 0.0.7 on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 22 packages to latest compatible versions
[INFO] [stderr]       Adding tokio v0.2.25 (available: v1.47.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tokio v0.2.25
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 91e18cc93ca1b2120665ab82dce4645c5271726ce65c270be7526901d074b96c
[INFO] running `Command { std: "docker" "start" "-a" "91e18cc93ca1b2120665ab82dce4645c5271726ce65c270be7526901d074b96c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "91e18cc93ca1b2120665ab82dce4645c5271726ce65c270be7526901d074b96c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "91e18cc93ca1b2120665ab82dce4645c5271726ce65c270be7526901d074b96c", kill_on_drop: false }`
[INFO] [stdout] 91e18cc93ca1b2120665ab82dce4645c5271726ce65c270be7526901d074b96c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 27e57100a8c21abfba405ebf5f92cb21579e711efe64cbfe2393b8f7f21dc21f
[INFO] running `Command { std: "docker" "start" "-a" "27e57100a8c21abfba405ebf5f92cb21579e711efe64cbfe2393b8f7f21dc21f", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]    Compiling futures-macro v0.3.31
[INFO] [stderr]    Compiling async-trait v0.1.89
[INFO] [stderr]    Compiling futures-util v0.3.31
[INFO] [stderr]    Compiling futures-executor v0.3.31
[INFO] [stderr]    Compiling futures v0.3.31
[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: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 77 |                                 let _ = std::mem::replace(
[INFO] [stdout]    |                                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.87s
[INFO] running `Command { std: "docker" "inspect" "27e57100a8c21abfba405ebf5f92cb21579e711efe64cbfe2393b8f7f21dc21f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "27e57100a8c21abfba405ebf5f92cb21579e711efe64cbfe2393b8f7f21dc21f", kill_on_drop: false }`
[INFO] [stdout] 27e57100a8c21abfba405ebf5f92cb21579e711efe64cbfe2393b8f7f21dc21f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7f58563fc73256436bd96a52d8a637320e7765fdbc42058a6369cd1d0a98333c
[INFO] running `Command { std: "docker" "start" "-a" "7f58563fc73256436bd96a52d8a637320e7765fdbc42058a6369cd1d0a98333c", kill_on_drop: false }`
[INFO] [stderr]    Compiling pin-project-lite v0.1.12
[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: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 77 |                                 let _ = std::mem::replace(
[INFO] [stdout]    |                                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling tokio v0.2.25
[INFO] [stderr]    Compiling streamline v0.0.7 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.50s
[INFO] running `Command { std: "docker" "inspect" "7f58563fc73256436bd96a52d8a637320e7765fdbc42058a6369cd1d0a98333c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7f58563fc73256436bd96a52d8a637320e7765fdbc42058a6369cd1d0a98333c", kill_on_drop: false }`
[INFO] [stdout] 7f58563fc73256436bd96a52d8a637320e7765fdbc42058a6369cd1d0a98333c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] afe605d4bd0fc5f7f99d17e05fe5d21b52d4f44627d3766a9f59ca1db75995c6
[INFO] running `Command { std: "docker" "start" "-a" "afe605d4bd0fc5f7f99d17e05fe5d21b52d4f44627d3766a9f59ca1db75995c6", kill_on_drop: false }`
[INFO] [stderr] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout] 
[INFO] [stderr]   --> src/streamline.rs:77:33
[INFO] [stdout] running 1 test
[INFO] [stderr]    |
[INFO] [stdout] test cancels ... ok
[INFO] [stderr] 77 | / ...                   std::mem::replace(
[INFO] [stdout] 
[INFO] [stderr] 78 | | ...                       &mut state_machine.cancellation_handle,
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr] 79 | | ...                       Some(reciever),
[INFO] [stdout] 
[INFO] [stderr] 80 | | ...                   );
[INFO] [stderr]    | |_______________________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]    |
[INFO] [stderr] 77 |                                 let _ = std::mem::replace(
[INFO] [stderr]    |                                 +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: `streamline` (lib) generated 1 warning
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.08s
[INFO] [stderr]      Running tests/cancel.rs (/opt/rustwide/target/debug/deps/cancel-1f698b1e04d9f1cd)
[INFO] [stderr]      Running tests/context.rs (/opt/rustwide/target/debug/deps/context-d942f83df83876fc)
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/down.rs (/opt/rustwide/target/debug/deps/down-60e6bbd4af43ad22)
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/up.rs (/opt/rustwide/target/debug/deps/up-d3b9c49c8dcf3fab)
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "afe605d4bd0fc5f7f99d17e05fe5d21b52d4f44627d3766a9f59ca1db75995c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "afe605d4bd0fc5f7f99d17e05fe5d21b52d4f44627d3766a9f59ca1db75995c6", kill_on_drop: false }`
[INFO] [stdout] afe605d4bd0fc5f7f99d17e05fe5d21b52d4f44627d3766a9f59ca1db75995c6