[INFO] cloning repository https://github.com/TomSpencerLondon/rust-crash-course-exercises
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/TomSpencerLondon/rust-crash-course-exercises" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTomSpencerLondon%2Frust-crash-course-exercises", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTomSpencerLondon%2Frust-crash-course-exercises'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4227c747c69fdeb4c277137e8d5b3d741277c473
[INFO] testing TomSpencerLondon/rust-crash-course-exercises against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTomSpencerLondon%2Frust-crash-course-exercises" "/workspace/builds/worker-15/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-15/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/TomSpencerLondon/rust-crash-course-exercises 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/TomSpencerLondon/rust-crash-course-exercises
[INFO] finished tweaking git repo https://github.com/TomSpencerLondon/rust-crash-course-exercises
[INFO] tweaked toml for git repo https://github.com/TomSpencerLondon/rust-crash-course-exercises written to /workspace/builds/worker-15/source/Cargo.toml
[INFO] crate git repo https://github.com/TomSpencerLondon/rust-crash-course-exercises 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-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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] 20235e85dc9375059a3fc3a5ebf8c201d6b5ff3c65a57e8c00d58862c506c19c
[INFO] running `Command { std: "docker" "start" "-a" "20235e85dc9375059a3fc3a5ebf8c201d6b5ff3c65a57e8c00d58862c506c19c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "20235e85dc9375059a3fc3a5ebf8c201d6b5ff3c65a57e8c00d58862c506c19c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "20235e85dc9375059a3fc3a5ebf8c201d6b5ff3c65a57e8c00d58862c506c19c", kill_on_drop: false }`
[INFO] [stdout] 20235e85dc9375059a3fc3a5ebf8c201d6b5ff3c65a57e8c00d58862c506c19c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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] 599e4a470724646a576f41df8ddc3fd8f80be6f55158bf445ca3e4b2a663ddb9
[INFO] running `Command { std: "docker" "start" "-a" "599e4a470724646a576f41df8ddc3fd8f80be6f55158bf445ca3e4b2a663ddb9", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust_crash_course v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.70s
[INFO] running `Command { std: "docker" "inspect" "599e4a470724646a576f41df8ddc3fd8f80be6f55158bf445ca3e4b2a663ddb9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "599e4a470724646a576f41df8ddc3fd8f80be6f55158bf445ca3e4b2a663ddb9", kill_on_drop: false }`
[INFO] [stdout] 599e4a470724646a576f41df8ddc3fd8f80be6f55158bf445ca3e4b2a663ddb9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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] 16be77db35e071c80daa5bb6eaedcb8f0728e47e3b4d3157c639a2e216258d61
[INFO] running `Command { std: "docker" "start" "-a" "16be77db35e071c80daa5bb6eaedcb8f0728e47e3b4d3157c639a2e216258d61", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling rust_crash_course v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.44s
[INFO] running `Command { std: "docker" "inspect" "16be77db35e071c80daa5bb6eaedcb8f0728e47e3b4d3157c639a2e216258d61", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "16be77db35e071c80daa5bb6eaedcb8f0728e47e3b4d3157c639a2e216258d61", kill_on_drop: false }`
[INFO] [stdout] 16be77db35e071c80daa5bb6eaedcb8f0728e47e3b4d3157c639a2e216258d61
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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] b19b066acfe6c821f8f750e46fbed827d9cd0dc8becaa7caf30a78350f6b2901
[INFO] running `Command { std: "docker" "start" "-a" "b19b066acfe6c821f8f750e46fbed827d9cd0dc8becaa7caf30a78350f6b2901", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.29s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/rust_crash_course-5fcf7e61fe854d11)
[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" "b19b066acfe6c821f8f750e46fbed827d9cd0dc8becaa7caf30a78350f6b2901", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b19b066acfe6c821f8f750e46fbed827d9cd0dc8becaa7caf30a78350f6b2901", kill_on_drop: false }`
[INFO] [stdout] b19b066acfe6c821f8f750e46fbed827d9cd0dc8becaa7caf30a78350f6b2901