[INFO] fetching crate zerofrom 0.1.6...
[INFO] building zerofrom-0.1.6 against master#c7f6aa2869acdbf014d094c6e427e554e160b6db for pr-146237-2
[INFO] extracting crate zerofrom 0.1.6 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate zerofrom 0.1.6
[INFO] finished tweaking crates.io crate zerofrom 0.1.6
[INFO] tweaked toml for crates.io crate zerofrom 0.1.6 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate zerofrom 0.1.6 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 zerofrom 0.1.6 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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded unicode-ident v1.0.17
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 7440bb8d4f1eec6d4042ac20f03dafcede83dcf07eadad5d6f61499d65e4d29d
[INFO] running `Command { std: "docker" "start" "-a" "7440bb8d4f1eec6d4042ac20f03dafcede83dcf07eadad5d6f61499d65e4d29d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7440bb8d4f1eec6d4042ac20f03dafcede83dcf07eadad5d6f61499d65e4d29d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7440bb8d4f1eec6d4042ac20f03dafcede83dcf07eadad5d6f61499d65e4d29d", kill_on_drop: false }`
[INFO] [stdout] 7440bb8d4f1eec6d4042ac20f03dafcede83dcf07eadad5d6f61499d65e4d29d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 4b2b8b33f0286e4549b1ed4fae53e8301d74a80fd07bc17dd7ada501078897d4
[INFO] running `Command { std: "docker" "start" "-a" "4b2b8b33f0286e4549b1ed4fae53e8301d74a80fd07bc17dd7ada501078897d4", kill_on_drop: false }`
[INFO] [stderr]    Compiling zerofrom v0.1.6 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.10s
[INFO] running `Command { std: "docker" "inspect" "4b2b8b33f0286e4549b1ed4fae53e8301d74a80fd07bc17dd7ada501078897d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4b2b8b33f0286e4549b1ed4fae53e8301d74a80fd07bc17dd7ada501078897d4", kill_on_drop: false }`
[INFO] [stdout] 4b2b8b33f0286e4549b1ed4fae53e8301d74a80fd07bc17dd7ada501078897d4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] a71632bcf6af460cb5c4a5908f738abea60f88595a9118db3cc151a7acd3bf4f
[INFO] running `Command { std: "docker" "start" "-a" "a71632bcf6af460cb5c4a5908f738abea60f88595a9118db3cc151a7acd3bf4f", kill_on_drop: false }`
[INFO] [stderr]    Compiling zerofrom v0.1.6 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.19s
[INFO] running `Command { std: "docker" "inspect" "a71632bcf6af460cb5c4a5908f738abea60f88595a9118db3cc151a7acd3bf4f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a71632bcf6af460cb5c4a5908f738abea60f88595a9118db3cc151a7acd3bf4f", kill_on_drop: false }`
[INFO] [stdout] a71632bcf6af460cb5c4a5908f738abea60f88595a9118db3cc151a7acd3bf4f