[INFO] cloning repository https://github.com/chanhuhu/learn-rust-by-building-kvdb
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/chanhuhu/learn-rust-by-building-kvdb" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchanhuhu%2Flearn-rust-by-building-kvdb", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchanhuhu%2Flearn-rust-by-building-kvdb'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 57301f4b8058a6101bed079a76553364144a533a
[INFO] testing chanhuhu/learn-rust-by-building-kvdb against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchanhuhu%2Flearn-rust-by-building-kvdb" "/workspace/builds/worker-74/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-74/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/chanhuhu/learn-rust-by-building-kvdb 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/chanhuhu/learn-rust-by-building-kvdb
[INFO] finished tweaking git repo https://github.com/chanhuhu/learn-rust-by-building-kvdb
[INFO] tweaked toml for git repo https://github.com/chanhuhu/learn-rust-by-building-kvdb written to /workspace/builds/worker-74/source/Cargo.toml
[INFO] crate git repo https://github.com/chanhuhu/learn-rust-by-building-kvdb 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-74/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-74/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] e1a2e6c46117afc891ebe724b1af056f340865fa508d04e10ef76ca5165e30a0
[INFO] running `Command { std: "docker" "start" "-a" "e1a2e6c46117afc891ebe724b1af056f340865fa508d04e10ef76ca5165e30a0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e1a2e6c46117afc891ebe724b1af056f340865fa508d04e10ef76ca5165e30a0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e1a2e6c46117afc891ebe724b1af056f340865fa508d04e10ef76ca5165e30a0", kill_on_drop: false }`
[INFO] [stdout] e1a2e6c46117afc891ebe724b1af056f340865fa508d04e10ef76ca5165e30a0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-74/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-74/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] 62d80b93532863af939fa05ad3be655b4bd574ecf9a3cc7715615fb49fc83e4b
[INFO] running `Command { std: "docker" "start" "-a" "62d80b93532863af939fa05ad3be655b4bd574ecf9a3cc7715615fb49fc83e4b", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling mydb v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 24.22s
[INFO] running `Command { std: "docker" "inspect" "62d80b93532863af939fa05ad3be655b4bd574ecf9a3cc7715615fb49fc83e4b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "62d80b93532863af939fa05ad3be655b4bd574ecf9a3cc7715615fb49fc83e4b", kill_on_drop: false }`
[INFO] [stdout] 62d80b93532863af939fa05ad3be655b4bd574ecf9a3cc7715615fb49fc83e4b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-74/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-74/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] 6104dac061609517aee28a8d87b4a1f171daf038f1e515f3b37177e6c9343d25
[INFO] running `Command { std: "docker" "start" "-a" "6104dac061609517aee28a8d87b4a1f171daf038f1e515f3b37177e6c9343d25", kill_on_drop: false }`
[INFO] [stderr]    Compiling mydb v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.37s
[INFO] running `Command { std: "docker" "inspect" "6104dac061609517aee28a8d87b4a1f171daf038f1e515f3b37177e6c9343d25", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6104dac061609517aee28a8d87b4a1f171daf038f1e515f3b37177e6c9343d25", kill_on_drop: false }`
[INFO] [stdout] 6104dac061609517aee28a8d87b4a1f171daf038f1e515f3b37177e6c9343d25
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-74/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-74/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] bb95ae53e4388e2757f3cfdc74984a3ed8dbf80924cf39ec2df0eb9562c368b9
[INFO] running `Command { std: "docker" "start" "-a" "bb95ae53e4388e2757f3cfdc74984a3ed8dbf80924cf39ec2df0eb9562c368b9", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/mydb-0e3a0fa249aaaae6)
[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" "bb95ae53e4388e2757f3cfdc74984a3ed8dbf80924cf39ec2df0eb9562c368b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bb95ae53e4388e2757f3cfdc74984a3ed8dbf80924cf39ec2df0eb9562c368b9", kill_on_drop: false }`
[INFO] [stdout] bb95ae53e4388e2757f3cfdc74984a3ed8dbf80924cf39ec2df0eb9562c368b9