[INFO] fetching crate ufut 0.3.1...
[INFO] building ufut-0.3.1 against try#4987e9d4227139400384ab59296ffee3b0fb1183 for pr-146237-2
[INFO] extracting crate ufut 0.3.1 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate ufut 0.3.1
[INFO] finished tweaking crates.io crate ufut 0.3.1
[INFO] tweaked toml for crates.io crate ufut 0.3.1 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate ufut 0.3.1 on toolchain 4987e9d4227139400384ab59296ffee3b0fb1183
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "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" "+4987e9d4227139400384ab59296ffee3b0fb1183" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 1 package to latest compatible version
[INFO] [stderr]       Adding futures-micro v0.3.1 (available: v0.5.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "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" "+4987e9d4227139400384ab59296ffee3b0fb1183" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 98bd5e081e08576718fc5c0d4e546dca153186f8d0c2fd5c2e7c0acf01cac3bd
[INFO] running `Command { std: "docker" "start" "-a" "98bd5e081e08576718fc5c0d4e546dca153186f8d0c2fd5c2e7c0acf01cac3bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "98bd5e081e08576718fc5c0d4e546dca153186f8d0c2fd5c2e7c0acf01cac3bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "98bd5e081e08576718fc5c0d4e546dca153186f8d0c2fd5c2e7c0acf01cac3bd", kill_on_drop: false }`
[INFO] [stdout] 98bd5e081e08576718fc5c0d4e546dca153186f8d0c2fd5c2e7c0acf01cac3bd
[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=forbid" "-e" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 731203df2025244693be9d0d2651a9e749897317a082f5d790dfbb68ec5c5cb1
[INFO] running `Command { std: "docker" "start" "-a" "731203df2025244693be9d0d2651a9e749897317a082f5d790dfbb68ec5c5cb1", kill_on_drop: false }`
[INFO] [stderr]    Compiling futures-micro v0.3.1
[INFO] [stderr]    Compiling ufut v0.3.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.42s
[INFO] running `Command { std: "docker" "inspect" "731203df2025244693be9d0d2651a9e749897317a082f5d790dfbb68ec5c5cb1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "731203df2025244693be9d0d2651a9e749897317a082f5d790dfbb68ec5c5cb1", kill_on_drop: false }`
[INFO] [stdout] 731203df2025244693be9d0d2651a9e749897317a082f5d790dfbb68ec5c5cb1
[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=forbid" "-e" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] caa672bd66ccca5c0612bf15affaf5913c4569682eb5f2a13b39dfdc44bdd477
[INFO] running `Command { std: "docker" "start" "-a" "caa672bd66ccca5c0612bf15affaf5913c4569682eb5f2a13b39dfdc44bdd477", kill_on_drop: false }`
[INFO] [stderr]    Compiling ufut v0.3.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.20s
[INFO] running `Command { std: "docker" "inspect" "caa672bd66ccca5c0612bf15affaf5913c4569682eb5f2a13b39dfdc44bdd477", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "caa672bd66ccca5c0612bf15affaf5913c4569682eb5f2a13b39dfdc44bdd477", kill_on_drop: false }`
[INFO] [stdout] caa672bd66ccca5c0612bf15affaf5913c4569682eb5f2a13b39dfdc44bdd477