[INFO] cloning repository https://github.com/chupe/rust-simple_programming_problems
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/chupe/rust-simple_programming_problems" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchupe%2Frust-simple_programming_problems", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchupe%2Frust-simple_programming_problems'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] fc94de93565f1ee535ad0a8e79d336dfa0c54723
[INFO] testing chupe/rust-simple_programming_problems against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchupe%2Frust-simple_programming_problems" "/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/chupe/rust-simple_programming_problems 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/chupe/rust-simple_programming_problems
[INFO] finished tweaking git repo https://github.com/chupe/rust-simple_programming_problems
[INFO] tweaked toml for git repo https://github.com/chupe/rust-simple_programming_problems written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/chupe/rust-simple_programming_problems 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] 926965f7347ebfe0795472a5a6e0a07aa5760598c7692de51d064e638c9dddb7
[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" "926965f7347ebfe0795472a5a6e0a07aa5760598c7692de51d064e638c9dddb7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "926965f7347ebfe0795472a5a6e0a07aa5760598c7692de51d064e638c9dddb7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "926965f7347ebfe0795472a5a6e0a07aa5760598c7692de51d064e638c9dddb7", kill_on_drop: false }`
[INFO] [stdout] 926965f7347ebfe0795472a5a6e0a07aa5760598c7692de51d064e638c9dddb7
[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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 60c065a01db68ea21c0ee85ebb352aa388ad299adfe6ff72f4ce04e9a1c949ba
[INFO] running `Command { std: "docker" "start" "-a" "60c065a01db68ea21c0ee85ebb352aa388ad299adfe6ff72f4ce04e9a1c949ba", kill_on_drop: false }`
[INFO] [stderr]    Compiling simple_programming_problems v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.61s
[INFO] running `Command { std: "docker" "inspect" "60c065a01db68ea21c0ee85ebb352aa388ad299adfe6ff72f4ce04e9a1c949ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "60c065a01db68ea21c0ee85ebb352aa388ad299adfe6ff72f4ce04e9a1c949ba", kill_on_drop: false }`
[INFO] [stdout] 60c065a01db68ea21c0ee85ebb352aa388ad299adfe6ff72f4ce04e9a1c949ba
[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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] b656be838fc74e8d7936f917d3842ae6ff0b310bd95aae83133dfdb2faee2523
[INFO] running `Command { std: "docker" "start" "-a" "b656be838fc74e8d7936f917d3842ae6ff0b310bd95aae83133dfdb2faee2523", kill_on_drop: false }`
[INFO] [stderr]    Compiling simple_programming_problems v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.54s
[INFO] running `Command { std: "docker" "inspect" "b656be838fc74e8d7936f917d3842ae6ff0b310bd95aae83133dfdb2faee2523", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b656be838fc74e8d7936f917d3842ae6ff0b310bd95aae83133dfdb2faee2523", kill_on_drop: false }`
[INFO] [stdout] b656be838fc74e8d7936f917d3842ae6ff0b310bd95aae83133dfdb2faee2523
[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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 691220ed7b93e91cb3b1b8151eaf6231f9c3744056ee9b6a44ada200341c4c18
[INFO] running `Command { std: "docker" "start" "-a" "691220ed7b93e91cb3b1b8151eaf6231f9c3744056ee9b6a44ada200341c4c18", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/simple_programming_problems-6f2e77160021bd4e)
[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" "691220ed7b93e91cb3b1b8151eaf6231f9c3744056ee9b6a44ada200341c4c18", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "691220ed7b93e91cb3b1b8151eaf6231f9c3744056ee9b6a44ada200341c4c18", kill_on_drop: false }`
[INFO] [stdout] 691220ed7b93e91cb3b1b8151eaf6231f9c3744056ee9b6a44ada200341c4c18