[INFO] fetching crate mvclient 0.3.0...
[INFO] testing mvclient-0.3.0 against beta-2025-10-28 for beta-1.92-2
[INFO] extracting crate mvclient 0.3.0 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate mvclient 0.3.0
[INFO] finished tweaking crates.io crate mvclient 0.3.0
[INFO] tweaked toml for crates.io crate mvclient 0.3.0 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate mvclient 0.3.0 on toolchain beta-2025-10-28
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-10-28" "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" "+beta-2025-10-28" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 173 packages to latest compatible versions
[INFO] [stderr]       Adding rand v0.8.5 (available: v0.9.2)
[INFO] [stderr]       Adding reqwest v0.11.27 (available: v0.12.24)
[INFO] [stderr]       Adding thiserror v1.0.69 (available: v2.0.17)
[INFO] [stderr]       Adding zstd v0.11.2+zstd.1.5.2 (available: v0.13.3)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-10-28" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3b0d2bf4955760817632f46fd712c948602829668c58610113ba0e6fc66c8cb7
[INFO] running `Command { std: "docker" "start" "-a" "3b0d2bf4955760817632f46fd712c948602829668c58610113ba0e6fc66c8cb7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3b0d2bf4955760817632f46fd712c948602829668c58610113ba0e6fc66c8cb7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3b0d2bf4955760817632f46fd712c948602829668c58610113ba0e6fc66c8cb7", kill_on_drop: false }`
[INFO] [stdout] 3b0d2bf4955760817632f46fd712c948602829668c58610113ba0e6fc66c8cb7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 624d8d64dba4aba280a81144d7d0582b87172764b84db30d7ad5d48e9986894c
[INFO] running `Command { std: "docker" "start" "-a" "624d8d64dba4aba280a81144d7d0582b87172764b84db30d7ad5d48e9986894c", kill_on_drop: false }`
[INFO] [stderr]    Compiling bytes v1.10.1
[INFO] [stderr]    Compiling zstd-sys v2.0.16+zstd.1.5.7
[INFO] [stderr]    Compiling futures-util v0.3.31
[INFO] [stderr]    Compiling tracing v0.1.41
[INFO] [stderr]    Compiling blake3 v1.8.2
[INFO] [stderr]    Compiling idna v1.1.0
[INFO] [stderr]    Compiling rmp v0.8.14
[INFO] [stderr]    Compiling serde_urlencoded v0.7.1
[INFO] [stderr]    Compiling serde_bytes v0.11.19
[INFO] [stderr]    Compiling rmp-serde v1.3.0
[INFO] [stderr]    Compiling url v2.5.7
[INFO] [stderr]    Compiling tokio v1.48.0
[INFO] [stderr]    Compiling http v0.2.12
[INFO] [stderr]    Compiling http-body v0.4.6
[INFO] [stderr]    Compiling futures-executor v0.3.31
[INFO] [stderr]    Compiling zstd-safe v5.0.2+zstd.1.5.2
[INFO] [stderr]    Compiling futures v0.3.31
[INFO] [stderr]    Compiling zstd v0.11.2+zstd.1.5.2
[INFO] [stderr]    Compiling tokio-util v0.7.17
[INFO] [stderr]    Compiling h2 v0.3.27
[INFO] [stderr]    Compiling hyper v0.14.32
[INFO] [stderr]    Compiling reqwest v0.11.27
[INFO] [stderr]    Compiling mvclient v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `tokio::sync::RwLockWriteGuard` that must be used
[INFO] [stdout]    --> src/lib.rs:434:9
[INFO] [stdout]     |
[INFO] [stdout] 434 |         self.async_ctx.background_completion.write().await;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: if unused the RwLock will immediately unlock
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 434 |         let _ = self.async_ctx.background_completion.write().await;
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `tokio::sync::RwLockWriteGuard` that must be used
[INFO] [stdout]    --> src/lib.rs:635:9
[INFO] [stdout]     |
[INFO] [stdout] 635 |         self.async_ctx.background_completion.write().await;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: if unused the RwLock will immediately unlock
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 635 |         let _ = self.async_ctx.background_completion.write().await;
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 32.24s
[INFO] running `Command { std: "docker" "inspect" "624d8d64dba4aba280a81144d7d0582b87172764b84db30d7ad5d48e9986894c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "624d8d64dba4aba280a81144d7d0582b87172764b84db30d7ad5d48e9986894c", kill_on_drop: false }`
[INFO] [stdout] 624d8d64dba4aba280a81144d7d0582b87172764b84db30d7ad5d48e9986894c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e6b30bbe13c0aa446545f69201ad32017569e6a6b0847cbbdedd50bf4877b229
[INFO] running `Command { std: "docker" "start" "-a" "e6b30bbe13c0aa446545f69201ad32017569e6a6b0847cbbdedd50bf4877b229", kill_on_drop: false }`
[INFO] [stderr]    Compiling mvclient v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `tokio::sync::RwLockWriteGuard` that must be used
[INFO] [stdout]    --> src/lib.rs:434:9
[INFO] [stdout]     |
[INFO] [stdout] 434 |         self.async_ctx.background_completion.write().await;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: if unused the RwLock will immediately unlock
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 434 |         let _ = self.async_ctx.background_completion.write().await;
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `tokio::sync::RwLockWriteGuard` that must be used
[INFO] [stdout]    --> src/lib.rs:635:9
[INFO] [stdout]     |
[INFO] [stdout] 635 |         self.async_ctx.background_completion.write().await;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: if unused the RwLock will immediately unlock
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 635 |         let _ = self.async_ctx.background_completion.write().await;
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `tokio::sync::RwLockWriteGuard` that must be used
[INFO] [stdout]    --> src/lib.rs:434:9
[INFO] [stdout]     |
[INFO] [stdout] 434 |         self.async_ctx.background_completion.write().await;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: if unused the RwLock will immediately unlock
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 434 |         let _ = self.async_ctx.background_completion.write().await;
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `tokio::sync::RwLockWriteGuard` that must be used
[INFO] [stdout]    --> src/lib.rs:635:9
[INFO] [stdout]     |
[INFO] [stdout] 635 |         self.async_ctx.background_completion.write().await;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: if unused the RwLock will immediately unlock
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 635 |         let _ = self.async_ctx.background_completion.write().await;
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.32s
[INFO] running `Command { std: "docker" "inspect" "e6b30bbe13c0aa446545f69201ad32017569e6a6b0847cbbdedd50bf4877b229", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e6b30bbe13c0aa446545f69201ad32017569e6a6b0847cbbdedd50bf4877b229", kill_on_drop: false }`
[INFO] [stdout] e6b30bbe13c0aa446545f69201ad32017569e6a6b0847cbbdedd50bf4877b229
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] f7442649d96b150db2f51b999d2c85a6506a33919485aae8b66e48ecdb671067
[INFO] running `Command { std: "docker" "start" "-a" "f7442649d96b150db2f51b999d2c85a6506a33919485aae8b66e48ecdb671067", kill_on_drop: false }`
[INFO] [stderr] warning: unused `tokio::sync::RwLockWriteGuard` that must be used
[INFO] [stderr]    --> src/lib.rs:434:9
[INFO] [stderr]     |
[INFO] [stderr] 434 |         self.async_ctx.background_completion.write().await;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: if unused the RwLock will immediately unlock
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 434 |         let _ = self.async_ctx.background_completion.write().await;
[INFO] [stderr]     |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused `tokio::sync::RwLockWriteGuard` that must be used
[INFO] [stderr]    --> src/lib.rs:635:9
[INFO] [stderr]     |
[INFO] [stderr] 635 |         self.async_ctx.background_completion.write().await;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: if unused the RwLock will immediately unlock
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 635 |         let _ = self.async_ctx.background_completion.write().await;
[INFO] [stderr]     |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: `mvclient` (lib) generated 2 warnings
[INFO] [stderr] warning: `mvclient` (lib test) generated 2 warnings (2 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.16s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/mvclient-44b7ba9ffd8219d3)
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests mvclient
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "f7442649d96b150db2f51b999d2c85a6506a33919485aae8b66e48ecdb671067", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f7442649d96b150db2f51b999d2c85a6506a33919485aae8b66e48ecdb671067", kill_on_drop: false }`
[INFO] [stdout] f7442649d96b150db2f51b999d2c85a6506a33919485aae8b66e48ecdb671067
