[INFO] cloning repository https://github.com/thubie/hotswap_code_workspace
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/thubie/hotswap_code_workspace" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthubie%2Fhotswap_code_workspace", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthubie%2Fhotswap_code_workspace'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0b25f3a995055e338040222184e2c8f46477874d
[INFO] testing thubie/hotswap_code_workspace against try#613d1972a772987ed4ee06faccbab0e2fc839871+rustflags=-Copt-level=3 for pr-107051
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthubie%2Fhotswap_code_workspace" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/thubie/hotswap_code_workspace on toolchain 613d1972a772987ed4ee06faccbab0e2fc839871
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+613d1972a772987ed4ee06faccbab0e2fc839871" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/thubie/hotswap_code_workspace
[INFO] finished tweaking git repo https://github.com/thubie/hotswap_code_workspace
[INFO] tweaked toml for git repo https://github.com/thubie/hotswap_code_workspace written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/thubie/hotswap_code_workspace 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" "+613d1972a772987ed4ee06faccbab0e2fc839871" "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@sha256:7c93e6f9a94679f34221d1005849d4c83862f85b14a264fa0883942f4d043a66" "/opt/rustwide/cargo-home/bin/cargo" "+613d1972a772987ed4ee06faccbab0e2fc839871" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ffbdb959d4151e19f712be081e6a121c53aa14e8cdf6f35b223172dfd8dd060f
[INFO] running `Command { std: "docker" "start" "-a" "ffbdb959d4151e19f712be081e6a121c53aa14e8cdf6f35b223172dfd8dd060f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ffbdb959d4151e19f712be081e6a121c53aa14e8cdf6f35b223172dfd8dd060f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ffbdb959d4151e19f712be081e6a121c53aa14e8cdf6f35b223172dfd8dd060f", kill_on_drop: false }`
[INFO] [stdout] ffbdb959d4151e19f712be081e6a121c53aa14e8cdf6f35b223172dfd8dd060f
[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 -Copt-level=3" "-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@sha256:7c93e6f9a94679f34221d1005849d4c83862f85b14a264fa0883942f4d043a66" "/opt/rustwide/cargo-home/bin/cargo" "+613d1972a772987ed4ee06faccbab0e2fc839871" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 789ced8ae5f0c234d5f3af615488066c66ad2769ab3a61068ea424e8a69c78a8
[INFO] running `Command { std: "docker" "start" "-a" "789ced8ae5f0c234d5f3af615488066c66ad2769ab3a61068ea424e8a69c78a8", kill_on_drop: false }`
[INFO] [stderr]    Compiling siphasher v0.2.1
[INFO] [stderr]    Compiling libc v0.2.21
[INFO] [stderr]    Compiling dtoa v0.4.1
[INFO] [stderr]    Compiling itoa v0.3.1
[INFO] [stderr]    Compiling num-traits v0.1.37
[INFO] [stderr]    Compiling serde v0.9.11
[INFO] [stderr]    Compiling lazy_static v0.2.4
[INFO] [stderr]    Compiling message v0.1.0 (/opt/rustwide/workdir/message)
[INFO] [stderr]    Compiling fs_extra v1.0.0
[INFO] [stderr]    Compiling phf_shared v0.7.21
[INFO] [stderr]    Compiling rand v0.3.15
[INFO] [stderr]    Compiling phf v0.7.21
[INFO] [stderr]    Compiling phf_generator v0.7.21
[INFO] [stderr]    Compiling phf_codegen v0.7.21
[INFO] [stderr]    Compiling target_build_utils v0.3.0
[INFO] [stderr]    Compiling serde_json v0.9.9
[INFO] [stderr] error: could not compile `target_build_utils`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name target_build_utils /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/target_build_utils-0.3.0/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no -C debuginfo=2 --cfg 'feature="default"' --cfg 'feature="serde_json"' -C metadata=60f995254da33721 -C extra-filename=-60f995254da33721 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern phf=/opt/rustwide/target/debug/deps/libphf-41dc2f261eaad486.rmeta --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-6de0581dd3365d45.rmeta --cap-lints allow --cap-lints=forbid -Copt-level=3` (signal: 9, SIGKILL: kill)
[INFO] running `Command { std: "docker" "inspect" "789ced8ae5f0c234d5f3af615488066c66ad2769ab3a61068ea424e8a69c78a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "789ced8ae5f0c234d5f3af615488066c66ad2769ab3a61068ea424e8a69c78a8", kill_on_drop: false }`
[INFO] [stdout] 789ced8ae5f0c234d5f3af615488066c66ad2769ab3a61068ea424e8a69c78a8