[INFO] fetching crate optional_take 0.1.0...
[INFO] building optional_take-0.1.0 against try#d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6 for pr-146237-1
[INFO] extracting crate optional_take 0.1.0 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate optional_take 0.1.0
[INFO] finished tweaking crates.io crate optional_take 0.1.0
[INFO] tweaked toml for crates.io crate optional_take 0.1.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate optional_take 0.1.0 on toolchain d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "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" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a98093e47ab2574632d64770973161619dd55c6a2cff9348a913dccaa8eb4a3b
[INFO] running `Command { std: "docker" "start" "-a" "a98093e47ab2574632d64770973161619dd55c6a2cff9348a913dccaa8eb4a3b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a98093e47ab2574632d64770973161619dd55c6a2cff9348a913dccaa8eb4a3b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a98093e47ab2574632d64770973161619dd55c6a2cff9348a913dccaa8eb4a3b", kill_on_drop: false }`
[INFO] [stdout] a98093e47ab2574632d64770973161619dd55c6a2cff9348a913dccaa8eb4a3b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ff5abd92d4bb10ee4d812ec1652a384e34d279b9dd80a151b97b0ad0b7a98372
[INFO] running `Command { std: "docker" "start" "-a" "ff5abd92d4bb10ee4d812ec1652a384e34d279b9dd80a151b97b0ad0b7a98372", kill_on_drop: false }`
[INFO] [stderr]    Compiling optional_take v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.28s
[INFO] running `Command { std: "docker" "inspect" "ff5abd92d4bb10ee4d812ec1652a384e34d279b9dd80a151b97b0ad0b7a98372", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ff5abd92d4bb10ee4d812ec1652a384e34d279b9dd80a151b97b0ad0b7a98372", kill_on_drop: false }`
[INFO] [stdout] ff5abd92d4bb10ee4d812ec1652a384e34d279b9dd80a151b97b0ad0b7a98372
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ba77babbaf8d8f7772e7e0783e0057133a269ec2e7817dd7c065107fc9a34cbf
[INFO] running `Command { std: "docker" "start" "-a" "ba77babbaf8d8f7772e7e0783e0057133a269ec2e7817dd7c065107fc9a34cbf", kill_on_drop: false }`
[INFO] [stderr]    Compiling optional_take v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.60s
[INFO] running `Command { std: "docker" "inspect" "ba77babbaf8d8f7772e7e0783e0057133a269ec2e7817dd7c065107fc9a34cbf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ba77babbaf8d8f7772e7e0783e0057133a269ec2e7817dd7c065107fc9a34cbf", kill_on_drop: false }`
[INFO] [stdout] ba77babbaf8d8f7772e7e0783e0057133a269ec2e7817dd7c065107fc9a34cbf