[INFO] cloning repository https://github.com/b3hr4d/rust-learning
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/b3hr4d/rust-learning" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fb3hr4d%2Frust-learning", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fb3hr4d%2Frust-learning'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 254e2b2494e87283a9f00258f032c2ef12ede7c0
[INFO] testing b3hr4d/rust-learning against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fb3hr4d%2Frust-learning" "/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/b3hr4d/rust-learning 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/b3hr4d/rust-learning
[INFO] finished tweaking git repo https://github.com/b3hr4d/rust-learning
[INFO] tweaked toml for git repo https://github.com/b3hr4d/rust-learning written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/b3hr4d/rust-learning 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-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" "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] 5c5141aa182673ea6f07eea66639222a67a71b22e88a2a7a1617839ea4c40757
[INFO] running `Command { std: "docker" "start" "-a" "5c5141aa182673ea6f07eea66639222a67a71b22e88a2a7a1617839ea4c40757", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5c5141aa182673ea6f07eea66639222a67a71b22e88a2a7a1617839ea4c40757", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5c5141aa182673ea6f07eea66639222a67a71b22e88a2a7a1617839ea4c40757", kill_on_drop: false }`
[INFO] [stdout] 5c5141aa182673ea6f07eea66639222a67a71b22e88a2a7a1617839ea4c40757
[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" "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] cbaa69c20845cf208a45a2c1a094ab7f9fc082450e6450b40dda378fa5ac3033
[INFO] running `Command { std: "docker" "start" "-a" "cbaa69c20845cf208a45a2c1a094ab7f9fc082450e6450b40dda378fa5ac3033", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust-learning v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.50s
[INFO] running `Command { std: "docker" "inspect" "cbaa69c20845cf208a45a2c1a094ab7f9fc082450e6450b40dda378fa5ac3033", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cbaa69c20845cf208a45a2c1a094ab7f9fc082450e6450b40dda378fa5ac3033", kill_on_drop: false }`
[INFO] [stdout] cbaa69c20845cf208a45a2c1a094ab7f9fc082450e6450b40dda378fa5ac3033
[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" "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] 08f3f2fdb38c99466f48d36e57d25216f6da75a5e46faff2a41110fab43fff77
[INFO] running `Command { std: "docker" "start" "-a" "08f3f2fdb38c99466f48d36e57d25216f6da75a5e46faff2a41110fab43fff77", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust-learning v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.60s
[INFO] running `Command { std: "docker" "inspect" "08f3f2fdb38c99466f48d36e57d25216f6da75a5e46faff2a41110fab43fff77", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "08f3f2fdb38c99466f48d36e57d25216f6da75a5e46faff2a41110fab43fff77", kill_on_drop: false }`
[INFO] [stdout] 08f3f2fdb38c99466f48d36e57d25216f6da75a5e46faff2a41110fab43fff77
[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" "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] bc0b45fa0e58e9cb01b2d387e61e1229f68e8e08a9bbde833b7897897b0cf7ff
[INFO] running `Command { std: "docker" "start" "-a" "bc0b45fa0e58e9cb01b2d387e61e1229f68e8e08a9bbde833b7897897b0cf7ff", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/rust_learning-6bcbcd8ed1899be7)
[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" "bc0b45fa0e58e9cb01b2d387e61e1229f68e8e08a9bbde833b7897897b0cf7ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bc0b45fa0e58e9cb01b2d387e61e1229f68e8e08a9bbde833b7897897b0cf7ff", kill_on_drop: false }`
[INFO] [stdout] bc0b45fa0e58e9cb01b2d387e61e1229f68e8e08a9bbde833b7897897b0cf7ff