[INFO] fetching crate pow-captcha-core 0.2.2...
[INFO] building pow-captcha-core-0.2.2 against master#c7f6aa2869acdbf014d094c6e427e554e160b6db for pr-146237-2
[INFO] extracting crate pow-captcha-core 0.2.2 into /workspace/builds/worker-0-tc1/source
[INFO] started tweaking crates.io crate pow-captcha-core 0.2.2
[INFO] finished tweaking crates.io crate pow-captcha-core 0.2.2
[INFO] tweaked toml for crates.io crate pow-captcha-core 0.2.2 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate pow-captcha-core 0.2.2 on toolchain c7f6aa2869acdbf014d094c6e427e554e160b6db
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate pow-captcha-core 0.2.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 33aeb5c95ddf5c4016fc2be7713221ef448aeb730ca48bb32885d69b70e559f7
[INFO] running `Command { std: "docker" "start" "-a" "33aeb5c95ddf5c4016fc2be7713221ef448aeb730ca48bb32885d69b70e559f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "33aeb5c95ddf5c4016fc2be7713221ef448aeb730ca48bb32885d69b70e559f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "33aeb5c95ddf5c4016fc2be7713221ef448aeb730ca48bb32885d69b70e559f7", kill_on_drop: false }`
[INFO] [stdout] 33aeb5c95ddf5c4016fc2be7713221ef448aeb730ca48bb32885d69b70e559f7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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=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" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 332f598ab0fa891a8edd542452c7955f3c03faaeae2590483ee5a17f2fb9f5a9
[INFO] running `Command { std: "docker" "start" "-a" "332f598ab0fa891a8edd542452c7955f3c03faaeae2590483ee5a17f2fb9f5a9", kill_on_drop: false }`
[INFO] [stderr]    Compiling getrandom v0.2.16
[INFO] [stderr]    Compiling sha2 v0.10.9
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling pow-captcha-core v0.2.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.52s
[INFO] running `Command { std: "docker" "inspect" "332f598ab0fa891a8edd542452c7955f3c03faaeae2590483ee5a17f2fb9f5a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "332f598ab0fa891a8edd542452c7955f3c03faaeae2590483ee5a17f2fb9f5a9", kill_on_drop: false }`
[INFO] [stdout] 332f598ab0fa891a8edd542452c7955f3c03faaeae2590483ee5a17f2fb9f5a9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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=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" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0c94332a2d65aa9b1f4d404df3eb7429a2202000c0e7de63e702e2ac8ccc4aeb
[INFO] running `Command { std: "docker" "start" "-a" "0c94332a2d65aa9b1f4d404df3eb7429a2202000c0e7de63e702e2ac8ccc4aeb", kill_on_drop: false }`
[INFO] [stderr]    Compiling pow-captcha-core v0.2.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.52s
[INFO] running `Command { std: "docker" "inspect" "0c94332a2d65aa9b1f4d404df3eb7429a2202000c0e7de63e702e2ac8ccc4aeb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0c94332a2d65aa9b1f4d404df3eb7429a2202000c0e7de63e702e2ac8ccc4aeb", kill_on_drop: false }`
[INFO] [stdout] 0c94332a2d65aa9b1f4d404df3eb7429a2202000c0e7de63e702e2ac8ccc4aeb