[INFO] fetching crate taskio 0.1.0-alpha-1...
[INFO] testing taskio-0.1.0-alpha-1 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate taskio 0.1.0-alpha-1 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate taskio 0.1.0-alpha-1
[INFO] finished tweaking crates.io crate taskio 0.1.0-alpha-1
[INFO] tweaked toml for crates.io crate taskio 0.1.0-alpha-1 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate taskio 0.1.0-alpha-1 on toolchain beta-2025-09-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "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-2025-09-21" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 3 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] be7a078c656b537bb648e558c35071c89ca3a45f40abf670ac018f5bb0745ee8
[INFO] running `Command { std: "docker" "start" "-a" "be7a078c656b537bb648e558c35071c89ca3a45f40abf670ac018f5bb0745ee8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "be7a078c656b537bb648e558c35071c89ca3a45f40abf670ac018f5bb0745ee8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "be7a078c656b537bb648e558c35071c89ca3a45f40abf670ac018f5bb0745ee8", kill_on_drop: false }`
[INFO] [stdout] be7a078c656b537bb648e558c35071c89ca3a45f40abf670ac018f5bb0745ee8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 86e9aa322bd5cb9e5437224c92a804ce1598fc6a2a93087adc84de0e8440070b
[INFO] running `Command { std: "docker" "start" "-a" "86e9aa322bd5cb9e5437224c92a804ce1598fc6a2a93087adc84de0e8440070b", kill_on_drop: false }`
[INFO] [stderr]    Compiling taskio v0.1.0-alpha-1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.17s
[INFO] running `Command { std: "docker" "inspect" "86e9aa322bd5cb9e5437224c92a804ce1598fc6a2a93087adc84de0e8440070b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "86e9aa322bd5cb9e5437224c92a804ce1598fc6a2a93087adc84de0e8440070b", kill_on_drop: false }`
[INFO] [stdout] 86e9aa322bd5cb9e5437224c92a804ce1598fc6a2a93087adc84de0e8440070b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 95e028e9bd9444483bf923de23f18e79460c02c0c31771fd89688f94e1f5583d
[INFO] running `Command { std: "docker" "start" "-a" "95e028e9bd9444483bf923de23f18e79460c02c0c31771fd89688f94e1f5583d", kill_on_drop: false }`
[INFO] [stderr]    Compiling taskio v0.1.0-alpha-1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.37s
[INFO] running `Command { std: "docker" "inspect" "95e028e9bd9444483bf923de23f18e79460c02c0c31771fd89688f94e1f5583d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "95e028e9bd9444483bf923de23f18e79460c02c0c31771fd89688f94e1f5583d", kill_on_drop: false }`
[INFO] [stdout] 95e028e9bd9444483bf923de23f18e79460c02c0c31771fd89688f94e1f5583d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 0cb0db31880a6aa831cda7b3e658ef1937a1bb7ae81df7c8ed3941b2842d68c4
[INFO] running `Command { std: "docker" "start" "-a" "0cb0db31880a6aa831cda7b3e658ef1937a1bb7ae81df7c8ed3941b2842d68c4", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/taskio-387753c06f95b3b2)
[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 taskio
[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" "0cb0db31880a6aa831cda7b3e658ef1937a1bb7ae81df7c8ed3941b2842d68c4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0cb0db31880a6aa831cda7b3e658ef1937a1bb7ae81df7c8ed3941b2842d68c4", kill_on_drop: false }`
[INFO] [stdout] 0cb0db31880a6aa831cda7b3e658ef1937a1bb7ae81df7c8ed3941b2842d68c4