[INFO] cloning repository https://github.com/robotlovesyou/adv2020_4
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/robotlovesyou/adv2020_4" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frobotlovesyou%2Fadv2020_4", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frobotlovesyou%2Fadv2020_4'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 86de1a208b212f7c45b1b8ce23d43b28701328e3
[INFO] testing robotlovesyou/adv2020_4 against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frobotlovesyou%2Fadv2020_4" "/workspace/builds/worker-56/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-56/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/robotlovesyou/adv2020_4 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/robotlovesyou/adv2020_4
[INFO] finished tweaking git repo https://github.com/robotlovesyou/adv2020_4
[INFO] tweaked toml for git repo https://github.com/robotlovesyou/adv2020_4 written to /workspace/builds/worker-56/source/Cargo.toml
[INFO] crate git repo https://github.com/robotlovesyou/adv2020_4 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-56/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-56/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] c7b682c12eebe95fa590e4c72041c9e1b0fd58b84a86e3ec86ac163f75e5a640
[INFO] running `Command { std: "docker" "start" "-a" "c7b682c12eebe95fa590e4c72041c9e1b0fd58b84a86e3ec86ac163f75e5a640", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c7b682c12eebe95fa590e4c72041c9e1b0fd58b84a86e3ec86ac163f75e5a640", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c7b682c12eebe95fa590e4c72041c9e1b0fd58b84a86e3ec86ac163f75e5a640", kill_on_drop: false }`
[INFO] [stdout] c7b682c12eebe95fa590e4c72041c9e1b0fd58b84a86e3ec86ac163f75e5a640
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-56/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-56/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] 79de8c44a1d745959bdcc5b2cf578bef5e3398daa2c5b443bf96c98e477f9781
[INFO] running `Command { std: "docker" "start" "-a" "79de8c44a1d745959bdcc5b2cf578bef5e3398daa2c5b443bf96c98e477f9781", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling regex-syntax v0.6.21
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling aho-corasick v0.7.15
[INFO] [stderr]    Compiling regex v1.4.2
[INFO] [stderr]    Compiling adv2020_4 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 50.92s
[INFO] running `Command { std: "docker" "inspect" "79de8c44a1d745959bdcc5b2cf578bef5e3398daa2c5b443bf96c98e477f9781", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "79de8c44a1d745959bdcc5b2cf578bef5e3398daa2c5b443bf96c98e477f9781", kill_on_drop: false }`
[INFO] [stdout] 79de8c44a1d745959bdcc5b2cf578bef5e3398daa2c5b443bf96c98e477f9781
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-56/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-56/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] 2859bbe63af388eb3b974cf4227305dee9b28b4de64f973350c31ddcfd7a1974
[INFO] running `Command { std: "docker" "start" "-a" "2859bbe63af388eb3b974cf4227305dee9b28b4de64f973350c31ddcfd7a1974", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling adv2020_4 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.34s
[INFO] running `Command { std: "docker" "inspect" "2859bbe63af388eb3b974cf4227305dee9b28b4de64f973350c31ddcfd7a1974", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2859bbe63af388eb3b974cf4227305dee9b28b4de64f973350c31ddcfd7a1974", kill_on_drop: false }`
[INFO] [stdout] 2859bbe63af388eb3b974cf4227305dee9b28b4de64f973350c31ddcfd7a1974
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-56/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-56/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] 09f26a694e24a44c1434bd4acaacd3524b4ff0bfbcb734c324a94191e36aab47
[INFO] running `Command { std: "docker" "start" "-a" "09f26a694e24a44c1434bd4acaacd3524b4ff0bfbcb734c324a94191e36aab47", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 11.38s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/adv2020_4-8891d38c2b32af51)
[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" "09f26a694e24a44c1434bd4acaacd3524b4ff0bfbcb734c324a94191e36aab47", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "09f26a694e24a44c1434bd4acaacd3524b4ff0bfbcb734c324a94191e36aab47", kill_on_drop: false }`
[INFO] [stdout] 09f26a694e24a44c1434bd4acaacd3524b4ff0bfbcb734c324a94191e36aab47