[INFO] fetching crate prometheus-metric-storage 0.2.0...
[INFO] testing prometheus-metric-storage-0.2.0 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate prometheus-metric-storage 0.2.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate prometheus-metric-storage 0.2.0 on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate prometheus-metric-storage 0.2.0
[INFO] finished tweaking crates.io crate prometheus-metric-storage 0.2.0
[INFO] tweaked toml for crates.io crate prometheus-metric-storage 0.2.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate prometheus-metric-storage 0.2.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded prometheus-metric-storage-derive v0.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] f5280ec10ebf7843c6a052a8e3d813f021227809296202f2f4d28432ce9f094a
[INFO] running `Command { std: "docker" "start" "-a" "f5280ec10ebf7843c6a052a8e3d813f021227809296202f2f4d28432ce9f094a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f5280ec10ebf7843c6a052a8e3d813f021227809296202f2f4d28432ce9f094a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f5280ec10ebf7843c6a052a8e3d813f021227809296202f2f4d28432ce9f094a", kill_on_drop: false }`
[INFO] [stdout] f5280ec10ebf7843c6a052a8e3d813f021227809296202f2f4d28432ce9f094a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 38d9687573170e3b6691f6822e50f8e50d1740a91cca9fabce1b41c9cddb0c8a
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "38d9687573170e3b6691f6822e50f8e50d1740a91cca9fabce1b41c9cddb0c8a", kill_on_drop: false }`
[INFO] [stderr]    Compiling prometheus-metric-storage-derive v0.2.0
[INFO] [stderr]    Compiling prometheus v0.12.0
[INFO] [stderr]    Compiling prometheus-metric-storage v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.71s
[INFO] running `Command { std: "docker" "inspect" "38d9687573170e3b6691f6822e50f8e50d1740a91cca9fabce1b41c9cddb0c8a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "38d9687573170e3b6691f6822e50f8e50d1740a91cca9fabce1b41c9cddb0c8a", kill_on_drop: false }`
[INFO] [stdout] 38d9687573170e3b6691f6822e50f8e50d1740a91cca9fabce1b41c9cddb0c8a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+beta-2021-09-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dc1eb22a163e5e6049260081f02be59aebf0658da9dd2c24ad10582469a5e7c4
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "dc1eb22a163e5e6049260081f02be59aebf0658da9dd2c24ad10582469a5e7c4", kill_on_drop: false }`
[INFO] [stderr]    Compiling prometheus-metric-storage v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.91s
[INFO] running `Command { std: "docker" "inspect" "dc1eb22a163e5e6049260081f02be59aebf0658da9dd2c24ad10582469a5e7c4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dc1eb22a163e5e6049260081f02be59aebf0658da9dd2c24ad10582469a5e7c4", kill_on_drop: false }`
[INFO] [stdout] dc1eb22a163e5e6049260081f02be59aebf0658da9dd2c24ad10582469a5e7c4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+beta-2021-09-08" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 9d922436bee466ac2653b0fbede404b91510679f7cac4108ecf0fc7628f50fe9
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "9d922436bee466ac2653b0fbede404b91510679f7cac4108ecf0fc7628f50fe9", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/prometheus_metric_storage-87ff94a29ec1a7a5)
[INFO] [stdout] running 0 tests
[INFO] [stderr]    Doc-tests prometheus-metric-storage
[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] [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" "9d922436bee466ac2653b0fbede404b91510679f7cac4108ecf0fc7628f50fe9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9d922436bee466ac2653b0fbede404b91510679f7cac4108ecf0fc7628f50fe9", kill_on_drop: false }`
[INFO] [stdout] 9d922436bee466ac2653b0fbede404b91510679f7cac4108ecf0fc7628f50fe9