[INFO] cloning repository https://github.com/jayshrivastava/learning-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jayshrivastava/learning-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjayshrivastava%2Flearning-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjayshrivastava%2Flearning-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6b41df288f2769bf187bb74c0c52657d40ac5288
[INFO] testing jayshrivastava/learning-rust against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjayshrivastava%2Flearning-rust" "/workspace/builds/worker-34/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-34/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jayshrivastava/learning-rust 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/jayshrivastava/learning-rust
[INFO] finished tweaking git repo https://github.com/jayshrivastava/learning-rust
[INFO] tweaked toml for git repo https://github.com/jayshrivastava/learning-rust written to /workspace/builds/worker-34/source/Cargo.toml
[INFO] crate git repo https://github.com/jayshrivastava/learning-rust 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-34/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-34/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] 3cb81a02b4880486b8e0058ba364acce1ef0aa24d8026f5e177a05314825d4e6
[INFO] running `Command { std: "docker" "start" "-a" "3cb81a02b4880486b8e0058ba364acce1ef0aa24d8026f5e177a05314825d4e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3cb81a02b4880486b8e0058ba364acce1ef0aa24d8026f5e177a05314825d4e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3cb81a02b4880486b8e0058ba364acce1ef0aa24d8026f5e177a05314825d4e6", kill_on_drop: false }`
[INFO] [stdout] 3cb81a02b4880486b8e0058ba364acce1ef0aa24d8026f5e177a05314825d4e6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-34/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-34/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] 48e6633f01e410cd38fd46dd4a832bf5a966072b63e89d5811f82dbb454a0aac
[INFO] running `Command { std: "docker" "start" "-a" "48e6633f01e410cd38fd46dd4a832bf5a966072b63e89d5811f82dbb454a0aac", kill_on_drop: false }`
[INFO] [stderr]    Compiling learning-rustlang v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.01s
[INFO] running `Command { std: "docker" "inspect" "48e6633f01e410cd38fd46dd4a832bf5a966072b63e89d5811f82dbb454a0aac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "48e6633f01e410cd38fd46dd4a832bf5a966072b63e89d5811f82dbb454a0aac", kill_on_drop: false }`
[INFO] [stdout] 48e6633f01e410cd38fd46dd4a832bf5a966072b63e89d5811f82dbb454a0aac
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-34/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-34/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] 9523292ad20a1ea11652b73530345eded6466c507aeadd34cae2c5b8d36e2d65
[INFO] running `Command { std: "docker" "start" "-a" "9523292ad20a1ea11652b73530345eded6466c507aeadd34cae2c5b8d36e2d65", kill_on_drop: false }`
[INFO] [stderr]    Compiling learning-rustlang v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.45s
[INFO] running `Command { std: "docker" "inspect" "9523292ad20a1ea11652b73530345eded6466c507aeadd34cae2c5b8d36e2d65", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9523292ad20a1ea11652b73530345eded6466c507aeadd34cae2c5b8d36e2d65", kill_on_drop: false }`
[INFO] [stdout] 9523292ad20a1ea11652b73530345eded6466c507aeadd34cae2c5b8d36e2d65
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-34/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-34/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] 3f6ef521438a02ec736c949643feb552567915f8b4866a3d6474cfaf6eadb80b
[INFO] running `Command { std: "docker" "start" "-a" "3f6ef521438a02ec736c949643feb552567915f8b4866a3d6474cfaf6eadb80b", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/learning_rustlang-859c903ecbf7bbef)
[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" "3f6ef521438a02ec736c949643feb552567915f8b4866a3d6474cfaf6eadb80b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3f6ef521438a02ec736c949643feb552567915f8b4866a3d6474cfaf6eadb80b", kill_on_drop: false }`
[INFO] [stdout] 3f6ef521438a02ec736c949643feb552567915f8b4866a3d6474cfaf6eadb80b