[INFO] cloning repository https://github.com/kecci/rust-understanding-ownership
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kecci/rust-understanding-ownership" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkecci%2Frust-understanding-ownership", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkecci%2Frust-understanding-ownership'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6be1bbc55e4d54c06608658f318a8ab8d1c12aba
[INFO] testing kecci/rust-understanding-ownership against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkecci%2Frust-understanding-ownership" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kecci/rust-understanding-ownership 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/kecci/rust-understanding-ownership
[INFO] finished tweaking git repo https://github.com/kecci/rust-understanding-ownership
[INFO] tweaked toml for git repo https://github.com/kecci/rust-understanding-ownership written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/kecci/rust-understanding-ownership 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-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 6bff568f722c60890d612f080d8b48186f08c0fa19fedb03ab8abcd6e1192684
[INFO] running `Command { std: "docker" "start" "-a" "6bff568f722c60890d612f080d8b48186f08c0fa19fedb03ab8abcd6e1192684", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6bff568f722c60890d612f080d8b48186f08c0fa19fedb03ab8abcd6e1192684", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6bff568f722c60890d612f080d8b48186f08c0fa19fedb03ab8abcd6e1192684", kill_on_drop: false }`
[INFO] [stdout] 6bff568f722c60890d612f080d8b48186f08c0fa19fedb03ab8abcd6e1192684
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] b22263e3d70be8805d43da3a3509a7af5e416486436c0962458969a0c18c1d00
[INFO] running `Command { std: "docker" "start" "-a" "b22263e3d70be8805d43da3a3509a7af5e416486436c0962458969a0c18c1d00", kill_on_drop: false }`
[INFO] [stderr]    Compiling understanding_ownership v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.87s
[INFO] running `Command { std: "docker" "inspect" "b22263e3d70be8805d43da3a3509a7af5e416486436c0962458969a0c18c1d00", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b22263e3d70be8805d43da3a3509a7af5e416486436c0962458969a0c18c1d00", kill_on_drop: false }`
[INFO] [stdout] b22263e3d70be8805d43da3a3509a7af5e416486436c0962458969a0c18c1d00
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] 0fca5381d957a657f2d146aa84500c9d26d2e4dbbade16f8857c12a96a49cfde
[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" "0fca5381d957a657f2d146aa84500c9d26d2e4dbbade16f8857c12a96a49cfde", kill_on_drop: false }`
[INFO] [stderr]    Compiling understanding_ownership v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.06s
[INFO] running `Command { std: "docker" "inspect" "0fca5381d957a657f2d146aa84500c9d26d2e4dbbade16f8857c12a96a49cfde", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0fca5381d957a657f2d146aa84500c9d26d2e4dbbade16f8857c12a96a49cfde", kill_on_drop: false }`
[INFO] [stdout] 0fca5381d957a657f2d146aa84500c9d26d2e4dbbade16f8857c12a96a49cfde
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] 5aa4d990aa12141692ea2ce7e213e33195218c5dc02f40d1545087ae5e26fc7a
[INFO] running `Command { std: "docker" "start" "-a" "5aa4d990aa12141692ea2ce7e213e33195218c5dc02f40d1545087ae5e26fc7a", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stdout] running 0 tests
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/understanding_ownership-65e41fc269ef9d24)
[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" "5aa4d990aa12141692ea2ce7e213e33195218c5dc02f40d1545087ae5e26fc7a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5aa4d990aa12141692ea2ce7e213e33195218c5dc02f40d1545087ae5e26fc7a", kill_on_drop: false }`
[INFO] [stdout] 5aa4d990aa12141692ea2ce7e213e33195218c5dc02f40d1545087ae5e26fc7a