[INFO] cloning repository https://github.com/Murtaza0xFF/Rust-Playground
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Murtaza0xFF/Rust-Playground" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMurtaza0xFF%2FRust-Playground", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMurtaza0xFF%2FRust-Playground'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2117cbce957456e035f370e30bf09888ab181af4
[INFO] testing Murtaza0xFF/Rust-Playground against 1.49.0 for beta-1.50-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMurtaza0xFF%2FRust-Playground" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Murtaza0xFF/Rust-Playground on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Murtaza0xFF/Rust-Playground
[INFO] finished tweaking git repo https://github.com/Murtaza0xFF/Rust-Playground
[INFO] tweaked toml for git repo https://github.com/Murtaza0xFF/Rust-Playground written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/Murtaza0xFF/Rust-Playground already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3d06400234cc0c3a80a6624ee7d718e6ec83f918c0093ca24fa94d90ec1738a3
[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" "3d06400234cc0c3a80a6624ee7d718e6ec83f918c0093ca24fa94d90ec1738a3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3d06400234cc0c3a80a6624ee7d718e6ec83f918c0093ca24fa94d90ec1738a3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3d06400234cc0c3a80a6624ee7d718e6ec83f918c0093ca24fa94d90ec1738a3", kill_on_drop: false }`
[INFO] [stdout] 3d06400234cc0c3a80a6624ee7d718e6ec83f918c0093ca24fa94d90ec1738a3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "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] 72d24df61d569e417f00d94802404c0b133bd930f4ff5ec4539538abe46608a9
[INFO] running `Command { std: "docker" "start" "-a" "72d24df61d569e417f00d94802404c0b133bd930f4ff5ec4539538abe46608a9", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust_playground v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.62s
[INFO] running `Command { std: "docker" "inspect" "72d24df61d569e417f00d94802404c0b133bd930f4ff5ec4539538abe46608a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "72d24df61d569e417f00d94802404c0b133bd930f4ff5ec4539538abe46608a9", kill_on_drop: false }`
[INFO] [stdout] 72d24df61d569e417f00d94802404c0b133bd930f4ff5ec4539538abe46608a9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d10b4697fa84b43a382470db4b800bd2f977f7aa9a6cd212cfbb343bf2327eb0
[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" "d10b4697fa84b43a382470db4b800bd2f977f7aa9a6cd212cfbb343bf2327eb0", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust_playground v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.74s
[INFO] running `Command { std: "docker" "inspect" "d10b4697fa84b43a382470db4b800bd2f977f7aa9a6cd212cfbb343bf2327eb0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d10b4697fa84b43a382470db4b800bd2f977f7aa9a6cd212cfbb343bf2327eb0", kill_on_drop: false }`
[INFO] [stdout] d10b4697fa84b43a382470db4b800bd2f977f7aa9a6cd212cfbb343bf2327eb0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] d39938ec15cefae97a182d88cc5a8ededb98e438998866fa7811ee9b60d13df7
[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" "d39938ec15cefae97a182d88cc5a8ededb98e438998866fa7811ee9b60d13df7", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.10s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/rust_playground-2683efd5143364d2
[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
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "d39938ec15cefae97a182d88cc5a8ededb98e438998866fa7811ee9b60d13df7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d39938ec15cefae97a182d88cc5a8ededb98e438998866fa7811ee9b60d13df7", kill_on_drop: false }`
[INFO] [stdout] d39938ec15cefae97a182d88cc5a8ededb98e438998866fa7811ee9b60d13df7