[INFO] cloning repository https://github.com/rock117/substrate-course-exercise4
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rock117/substrate-course-exercise4" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frock117%2Fsubstrate-course-exercise4", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frock117%2Fsubstrate-course-exercise4'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a83eb9334c039ac86d9f41d0ad85f7616eccf456
[INFO] testing rock117/substrate-course-exercise4 against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frock117%2Fsubstrate-course-exercise4" "/workspace/builds/worker-99/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-99/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/rock117/substrate-course-exercise4 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/rock117/substrate-course-exercise4
[INFO] finished tweaking git repo https://github.com/rock117/substrate-course-exercise4
[INFO] tweaked toml for git repo https://github.com/rock117/substrate-course-exercise4 written to /workspace/builds/worker-99/source/Cargo.toml
[INFO] crate git repo https://github.com/rock117/substrate-course-exercise4 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-99/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-99/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] e242a444693e580fc40d5e8fb8e72e371b724fe3537aa9a471275ebde7e09e50
[INFO] running `Command { std: "docker" "start" "-a" "e242a444693e580fc40d5e8fb8e72e371b724fe3537aa9a471275ebde7e09e50", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e242a444693e580fc40d5e8fb8e72e371b724fe3537aa9a471275ebde7e09e50", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e242a444693e580fc40d5e8fb8e72e371b724fe3537aa9a471275ebde7e09e50", kill_on_drop: false }`
[INFO] [stdout] e242a444693e580fc40d5e8fb8e72e371b724fe3537aa9a471275ebde7e09e50
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-99/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-99/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] 20e6fd4994c0a13e7b72ac60c28c89f09d95de37ca5b9e19300526c0b2ae990e
[INFO] running `Command { std: "docker" "start" "-a" "20e6fd4994c0a13e7b72ac60c28c89f09d95de37ca5b9e19300526c0b2ae990e", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling substrate-course-exercise4 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.40s
[INFO] running `Command { std: "docker" "inspect" "20e6fd4994c0a13e7b72ac60c28c89f09d95de37ca5b9e19300526c0b2ae990e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "20e6fd4994c0a13e7b72ac60c28c89f09d95de37ca5b9e19300526c0b2ae990e", kill_on_drop: false }`
[INFO] [stdout] 20e6fd4994c0a13e7b72ac60c28c89f09d95de37ca5b9e19300526c0b2ae990e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-99/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-99/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] 4f5a621e743e6e83ff0e6eef6b6447ffb9f66ede8b2f3309d2e3cee22a2072a4
[INFO] running `Command { std: "docker" "start" "-a" "4f5a621e743e6e83ff0e6eef6b6447ffb9f66ede8b2f3309d2e3cee22a2072a4", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling substrate-course-exercise4 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 3.40s
[INFO] running `Command { std: "docker" "inspect" "4f5a621e743e6e83ff0e6eef6b6447ffb9f66ede8b2f3309d2e3cee22a2072a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4f5a621e743e6e83ff0e6eef6b6447ffb9f66ede8b2f3309d2e3cee22a2072a4", kill_on_drop: false }`
[INFO] [stdout] 4f5a621e743e6e83ff0e6eef6b6447ffb9f66ede8b2f3309d2e3cee22a2072a4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-99/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-99/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] b5b3b43b42c6737b4ed2e1b55445c4322bfb4a5c37eb4a20d862f002891eb3ce
[INFO] running `Command { std: "docker" "start" "-a" "b5b3b43b42c6737b4ed2e1b55445c4322bfb4a5c37eb4a20d862f002891eb3ce", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/substrate_course_exercise4-7fb9cc521c9fb91b)
[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" "b5b3b43b42c6737b4ed2e1b55445c4322bfb4a5c37eb4a20d862f002891eb3ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b5b3b43b42c6737b4ed2e1b55445c4322bfb4a5c37eb4a20d862f002891eb3ce", kill_on_drop: false }`
[INFO] [stdout] b5b3b43b42c6737b4ed2e1b55445c4322bfb4a5c37eb4a20d862f002891eb3ce