[INFO] fetching crate IntegerScaling 1.3.2...
[INFO] testing IntegerScaling-1.3.2 against 1.55.0 for beta-1.56-1
[INFO] extracting crate IntegerScaling 1.3.2 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate IntegerScaling 1.3.2 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 crates.io crate IntegerScaling 1.3.2
[INFO] finished tweaking crates.io crate IntegerScaling 1.3.2
[INFO] tweaked toml for crates.io crate IntegerScaling 1.3.2 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[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-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] bdb74096e724af9179822cc8fcdc58a9e29eb4965b5b885eec917ce0f5abb439
[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" "bdb74096e724af9179822cc8fcdc58a9e29eb4965b5b885eec917ce0f5abb439", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bdb74096e724af9179822cc8fcdc58a9e29eb4965b5b885eec917ce0f5abb439", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bdb74096e724af9179822cc8fcdc58a9e29eb4965b5b885eec917ce0f5abb439", kill_on_drop: false }`
[INFO] [stdout] bdb74096e724af9179822cc8fcdc58a9e29eb4965b5b885eec917ce0f5abb439
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] 5161e71f5009650d69374ebd1a878c0ef4f57ebae9ba52410b732f15c72f8c95
[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" "5161e71f5009650d69374ebd1a878c0ef4f57ebae9ba52410b732f15c72f8c95", kill_on_drop: false }`
[INFO] [stderr]    Compiling IntegerScaling v1.3.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.25s
[INFO] running `Command { std: "docker" "inspect" "5161e71f5009650d69374ebd1a878c0ef4f57ebae9ba52410b732f15c72f8c95", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5161e71f5009650d69374ebd1a878c0ef4f57ebae9ba52410b732f15c72f8c95", kill_on_drop: false }`
[INFO] [stdout] 5161e71f5009650d69374ebd1a878c0ef4f57ebae9ba52410b732f15c72f8c95
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] 0b4c7d5cc3a4c72d93734058f5c4a30709755bc0c6dd37d3cd0a6c2ef77f2117
[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" "0b4c7d5cc3a4c72d93734058f5c4a30709755bc0c6dd37d3cd0a6c2ef77f2117", kill_on_drop: false }`
[INFO] [stderr]    Compiling IntegerScaling v1.3.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.42s
[INFO] running `Command { std: "docker" "inspect" "0b4c7d5cc3a4c72d93734058f5c4a30709755bc0c6dd37d3cd0a6c2ef77f2117", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0b4c7d5cc3a4c72d93734058f5c4a30709755bc0c6dd37d3cd0a6c2ef77f2117", kill_on_drop: false }`
[INFO] [stdout] 0b4c7d5cc3a4c72d93734058f5c4a30709755bc0c6dd37d3cd0a6c2ef77f2117
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 106f8f2d48eae313de97f731c2ec8690e17d34e0e6e4cdd9ce743ebf3ee299c9
[INFO] running `Command { std: "docker" "start" "-a" "106f8f2d48eae313de97f731c2ec8690e17d34e0e6e4cdd9ce743ebf3ee299c9", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/IntegerScaling-ef28a8ae309911e2)
[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] [stderr]    Doc-tests IntegerScaling
[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" "106f8f2d48eae313de97f731c2ec8690e17d34e0e6e4cdd9ce743ebf3ee299c9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "106f8f2d48eae313de97f731c2ec8690e17d34e0e6e4cdd9ce743ebf3ee299c9", kill_on_drop: false }`
[INFO] [stdout] 106f8f2d48eae313de97f731c2ec8690e17d34e0e6e4cdd9ce743ebf3ee299c9