[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] testing shdblowers/roman_numerals_kata against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshdblowers%2Froman_numerals_kata" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/shdblowers/roman_numerals_kata on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", 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-4/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" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c902a2ba572a80c52fc76a3b41a1622ee6b5b70b95b03342fe317fc38b37bfb7
[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" "c902a2ba572a80c52fc76a3b41a1622ee6b5b70b95b03342fe317fc38b37bfb7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c902a2ba572a80c52fc76a3b41a1622ee6b5b70b95b03342fe317fc38b37bfb7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c902a2ba572a80c52fc76a3b41a1622ee6b5b70b95b03342fe317fc38b37bfb7", kill_on_drop: false }`
[INFO] [stdout] c902a2ba572a80c52fc76a3b41a1622ee6b5b70b95b03342fe317fc38b37bfb7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c0e2004a8dcba727675c3db46d3e81a828e39468bdfa804d2380e7060e95a3e1
[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" "c0e2004a8dcba727675c3db46d3e81a828e39468bdfa804d2380e7060e95a3e1", kill_on_drop: false }`
[INFO] [stderr]    Compiling roman_numerals_kata v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.35s
[INFO] running `Command { std: "docker" "inspect" "c0e2004a8dcba727675c3db46d3e81a828e39468bdfa804d2380e7060e95a3e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c0e2004a8dcba727675c3db46d3e81a828e39468bdfa804d2380e7060e95a3e1", kill_on_drop: false }`
[INFO] [stdout] c0e2004a8dcba727675c3db46d3e81a828e39468bdfa804d2380e7060e95a3e1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bca214106f0c8bfe425c18962a6bcc09646149ba94588284f8a548cff492873f
[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" "bca214106f0c8bfe425c18962a6bcc09646149ba94588284f8a548cff492873f", kill_on_drop: false }`
[INFO] [stderr]    Compiling roman_numerals_kata v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.35s
[INFO] running `Command { std: "docker" "inspect" "bca214106f0c8bfe425c18962a6bcc09646149ba94588284f8a548cff492873f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bca214106f0c8bfe425c18962a6bcc09646149ba94588284f8a548cff492873f", kill_on_drop: false }`
[INFO] [stdout] bca214106f0c8bfe425c18962a6bcc09646149ba94588284f8a548cff492873f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 9894ba27ea1872313b51f86eaaa1ea469f7f17e3ef1d5082ca1697ca5f801b79
[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" "9894ba27ea1872313b51f86eaaa1ea469f7f17e3ef1d5082ca1697ca5f801b79", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/roman_numerals_kata-9d2266e707d7844a)
[INFO] [stdout] 
[INFO] [stdout] running 11 tests
[INFO] [stdout] test tests::parse_errors_when_number_too_small ... ok
[INFO] [stdout] test tests::parse_errors_when_number_too_large ... ok
[INFO] [stdout] test encoder::tests::encode_fours ... ok
[INFO] [stdout] test tests::parse_errors_when_its_not_given_a_number ... ok
[INFO] [stdout] test tests::parse_converts_command_line_args_to_single_number ... ok
[INFO] [stdout] test tests::parse_errors_if_provided_with_too_few_arguments ... ok
[INFO] [stdout] test tests::parse_errors_if_provided_with_too_many_arguments ... ok
[INFO] [stdout] test encoder::tests::encode_singles ... ok
[INFO] [stdout] test encoder::tests::encode_fives ... ok
[INFO] [stdout] test encoder::tests::encode_multiples ... ok
[INFO] [stdout] test encoder::tests::encode_nines ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 11 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/roman_numerals_kata-4bb08e2be277c210)
[INFO] [stderr]    Doc-tests roman_numerals_kata
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "9894ba27ea1872313b51f86eaaa1ea469f7f17e3ef1d5082ca1697ca5f801b79", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9894ba27ea1872313b51f86eaaa1ea469f7f17e3ef1d5082ca1697ca5f801b79", kill_on_drop: false }`
[INFO] [stdout] 9894ba27ea1872313b51f86eaaa1ea469f7f17e3ef1d5082ca1697ca5f801b79