[INFO] cloning repository https://github.com/it-sumanp/RustPlayground
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/it-sumanp/RustPlayground" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fit-sumanp%2FRustPlayground", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fit-sumanp%2FRustPlayground'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7e3f2e425de11bb9b48f2a38adfcacbeb2a513cc
[INFO] testing it-sumanp/RustPlayground against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fit-sumanp%2FRustPlayground" "/workspace/builds/worker-45/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-45/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/it-sumanp/RustPlayground 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/it-sumanp/RustPlayground
[INFO] finished tweaking git repo https://github.com/it-sumanp/RustPlayground
[INFO] tweaked toml for git repo https://github.com/it-sumanp/RustPlayground written to /workspace/builds/worker-45/source/Cargo.toml
[INFO] crate git repo https://github.com/it-sumanp/RustPlayground 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-45/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-45/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] a385a956d1900fedd2382c34ab30d70a25bbf670f9de916cd038affccf377b32
[INFO] running `Command { std: "docker" "start" "-a" "a385a956d1900fedd2382c34ab30d70a25bbf670f9de916cd038affccf377b32", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a385a956d1900fedd2382c34ab30d70a25bbf670f9de916cd038affccf377b32", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a385a956d1900fedd2382c34ab30d70a25bbf670f9de916cd038affccf377b32", kill_on_drop: false }`
[INFO] [stdout] a385a956d1900fedd2382c34ab30d70a25bbf670f9de916cd038affccf377b32
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-45/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-45/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] c148b7acf6aff0941ab433ce8b63d415c3cf7d6e32b59de1432e2add6a0976c4
[INFO] running `Command { std: "docker" "start" "-a" "c148b7acf6aff0941ab433ce8b63d415c3cf7d6e32b59de1432e2add6a0976c4", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling hello_world v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.84s
[INFO] running `Command { std: "docker" "inspect" "c148b7acf6aff0941ab433ce8b63d415c3cf7d6e32b59de1432e2add6a0976c4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c148b7acf6aff0941ab433ce8b63d415c3cf7d6e32b59de1432e2add6a0976c4", kill_on_drop: false }`
[INFO] [stdout] c148b7acf6aff0941ab433ce8b63d415c3cf7d6e32b59de1432e2add6a0976c4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-45/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-45/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] 4d67e8eed227ac4f2cb90c14f290c04ec92da99b9bbbef80059cd501280fd9bd
[INFO] running `Command { std: "docker" "start" "-a" "4d67e8eed227ac4f2cb90c14f290c04ec92da99b9bbbef80059cd501280fd9bd", kill_on_drop: false }`
[INFO] [stderr]    Compiling hello_world v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.52s
[INFO] running `Command { std: "docker" "inspect" "4d67e8eed227ac4f2cb90c14f290c04ec92da99b9bbbef80059cd501280fd9bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4d67e8eed227ac4f2cb90c14f290c04ec92da99b9bbbef80059cd501280fd9bd", kill_on_drop: false }`
[INFO] [stdout] 4d67e8eed227ac4f2cb90c14f290c04ec92da99b9bbbef80059cd501280fd9bd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-45/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-45/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] 78b34cdbe083f63f0d9b5ed9d3f34f5c7ba31775aaf068258899e3b9c2048782
[INFO] running `Command { std: "docker" "start" "-a" "78b34cdbe083f63f0d9b5ed9d3f34f5c7ba31775aaf068258899e3b9c2048782", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/hello_world-09a8353126102ced)
[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" "78b34cdbe083f63f0d9b5ed9d3f34f5c7ba31775aaf068258899e3b9c2048782", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "78b34cdbe083f63f0d9b5ed9d3f34f5c7ba31775aaf068258899e3b9c2048782", kill_on_drop: false }`
[INFO] [stdout] 78b34cdbe083f63f0d9b5ed9d3f34f5c7ba31775aaf068258899e3b9c2048782