[INFO] cloning repository https://github.com/torkeldanielsson/fraction_problems_generator
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/torkeldanielsson/fraction_problems_generator" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftorkeldanielsson%2Ffraction_problems_generator", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftorkeldanielsson%2Ffraction_problems_generator'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1913590163faef10eca385f6a0b660fdd6ba5a83
[INFO] checking torkeldanielsson/fraction_problems_generator against try#6f12b8fe67b4eed2e838dab803ed9493b9d62c0f for pr-79073
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftorkeldanielsson%2Ffraction_problems_generator" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/torkeldanielsson/fraction_problems_generator on toolchain 6f12b8fe67b4eed2e838dab803ed9493b9d62c0f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f12b8fe67b4eed2e838dab803ed9493b9d62c0f" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/torkeldanielsson/fraction_problems_generator
[INFO] finished tweaking git repo https://github.com/torkeldanielsson/fraction_problems_generator
[INFO] tweaked toml for git repo https://github.com/torkeldanielsson/fraction_problems_generator written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/torkeldanielsson/fraction_problems_generator already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f12b8fe67b4eed2e838dab803ed9493b9d62c0f" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+6f12b8fe67b4eed2e838dab803ed9493b9d62c0f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d0ca8a4cce99b0ff8101fc084fd953dbaa2e0869bcfe4b1c2a7294c6b9fb73c6
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "d0ca8a4cce99b0ff8101fc084fd953dbaa2e0869bcfe4b1c2a7294c6b9fb73c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d0ca8a4cce99b0ff8101fc084fd953dbaa2e0869bcfe4b1c2a7294c6b9fb73c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d0ca8a4cce99b0ff8101fc084fd953dbaa2e0869bcfe4b1c2a7294c6b9fb73c6", kill_on_drop: false }`
[INFO] [stdout] d0ca8a4cce99b0ff8101fc084fd953dbaa2e0869bcfe4b1c2a7294c6b9fb73c6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+6f12b8fe67b4eed2e838dab803ed9493b9d62c0f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2705b61f2c9ab2df93fc711301454e44675eba19cfba52df99b4b89b58474ce9
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "2705b61f2c9ab2df93fc711301454e44675eba19cfba52df99b4b89b58474ce9", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.34
[INFO] [stderr]     Checking rand v0.3.18
[INFO] [stderr]     Checking math_gen v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.05s
[INFO] running `Command { std: "docker" "inspect" "2705b61f2c9ab2df93fc711301454e44675eba19cfba52df99b4b89b58474ce9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2705b61f2c9ab2df93fc711301454e44675eba19cfba52df99b4b89b58474ce9", kill_on_drop: false }`
[INFO] [stdout] 2705b61f2c9ab2df93fc711301454e44675eba19cfba52df99b4b89b58474ce9