[INFO] cloning repository https://github.com/shdblowers/roman_numerals_kata
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/shdblowers/roman_numerals_kata" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshdblowers%2Froman_numerals_kata", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshdblowers%2Froman_numerals_kata'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b2fc9416a55d8c2d706c9a2407eb9db3c32d48ce
[INFO] checking shdblowers/roman_numerals_kata against try#8b72f65b805cbe4c261de45030d663f524f27376 for pr-78991
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshdblowers%2Froman_numerals_kata" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/shdblowers/roman_numerals_kata on toolchain 8b72f65b805cbe4c261de45030d663f524f27376
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8b72f65b805cbe4c261de45030d663f524f27376" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/shdblowers/roman_numerals_kata
[INFO] finished tweaking git repo https://github.com/shdblowers/roman_numerals_kata
[INFO] tweaked toml for git repo https://github.com/shdblowers/roman_numerals_kata written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/shdblowers/roman_numerals_kata already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8b72f65b805cbe4c261de45030d663f524f27376" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+8b72f65b805cbe4c261de45030d663f524f27376" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 89974547f9f3640c0dcc0bb53eec864df3d9266dc2efe8ed02d2979550ed2596
[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" "89974547f9f3640c0dcc0bb53eec864df3d9266dc2efe8ed02d2979550ed2596", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "89974547f9f3640c0dcc0bb53eec864df3d9266dc2efe8ed02d2979550ed2596", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "89974547f9f3640c0dcc0bb53eec864df3d9266dc2efe8ed02d2979550ed2596", kill_on_drop: false }`
[INFO] [stdout] 89974547f9f3640c0dcc0bb53eec864df3d9266dc2efe8ed02d2979550ed2596
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+8b72f65b805cbe4c261de45030d663f524f27376" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7fb2bbb400e530738eab105d57243148c06ea8d96237ef2759aebbdbb74fe127
[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" "7fb2bbb400e530738eab105d57243148c06ea8d96237ef2759aebbdbb74fe127", kill_on_drop: false }`
[INFO] [stderr]     Checking roman_numerals_kata v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.01s
[INFO] running `Command { std: "docker" "inspect" "7fb2bbb400e530738eab105d57243148c06ea8d96237ef2759aebbdbb74fe127", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7fb2bbb400e530738eab105d57243148c06ea8d96237ef2759aebbdbb74fe127", kill_on_drop: false }`
[INFO] [stdout] 7fb2bbb400e530738eab105d57243148c06ea8d96237ef2759aebbdbb74fe127