[INFO] fetching crate grunt 999999999.999999999.999999999...
[INFO] testing grunt-999999999.999999999.999999999 against 1.49.0 for beta-1.50-1
[INFO] extracting crate grunt 999999999.999999999.999999999 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate grunt 999999999.999999999.999999999 on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate grunt 999999999.999999999.999999999
[INFO] finished tweaking crates.io crate grunt 999999999.999999999.999999999
[INFO] tweaked toml for crates.io crate grunt 999999999.999999999.999999999 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate grunt 999999999.999999999.999999999 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ffbe9cd9f2758d9934b3997566c1ffc0b7e6f04297ffbd7707dffe897d99c9f2
[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" "ffbe9cd9f2758d9934b3997566c1ffc0b7e6f04297ffbd7707dffe897d99c9f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ffbe9cd9f2758d9934b3997566c1ffc0b7e6f04297ffbd7707dffe897d99c9f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ffbe9cd9f2758d9934b3997566c1ffc0b7e6f04297ffbd7707dffe897d99c9f2", kill_on_drop: false }`
[INFO] [stdout] ffbe9cd9f2758d9934b3997566c1ffc0b7e6f04297ffbd7707dffe897d99c9f2
[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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 283948ec76df71f17b666abed3d44fcb4da4e1165d464a309ab4fc50a784e1b3
[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" "283948ec76df71f17b666abed3d44fcb4da4e1165d464a309ab4fc50a784e1b3", kill_on_drop: false }`
[INFO] [stderr]    Compiling grunt v999999999.999999999.999999999 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.68s
[INFO] running `Command { std: "docker" "inspect" "283948ec76df71f17b666abed3d44fcb4da4e1165d464a309ab4fc50a784e1b3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "283948ec76df71f17b666abed3d44fcb4da4e1165d464a309ab4fc50a784e1b3", kill_on_drop: false }`
[INFO] [stdout] 283948ec76df71f17b666abed3d44fcb4da4e1165d464a309ab4fc50a784e1b3
[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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c595994ea5a359942cf3496b85fba791ab84db4c549f5a6e0eece9a502be67c7
[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" "c595994ea5a359942cf3496b85fba791ab84db4c549f5a6e0eece9a502be67c7", kill_on_drop: false }`
[INFO] [stderr]    Compiling grunt v999999999.999999999.999999999 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.76s
[INFO] running `Command { std: "docker" "inspect" "c595994ea5a359942cf3496b85fba791ab84db4c549f5a6e0eece9a502be67c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c595994ea5a359942cf3496b85fba791ab84db4c549f5a6e0eece9a502be67c7", kill_on_drop: false }`
[INFO] [stdout] c595994ea5a359942cf3496b85fba791ab84db4c549f5a6e0eece9a502be67c7
[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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "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] c334b1043d747c0c65cec66c61110180c51e9a603bb808488cc59742fddebaf6
[INFO] running `Command { std: "docker" "start" "-a" "c334b1043d747c0c65cec66c61110180c51e9a603bb808488cc59742fddebaf6", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/grunt-baa55394335c1695
[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
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "c334b1043d747c0c65cec66c61110180c51e9a603bb808488cc59742fddebaf6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c334b1043d747c0c65cec66c61110180c51e9a603bb808488cc59742fddebaf6", kill_on_drop: false }`
[INFO] [stdout] c334b1043d747c0c65cec66c61110180c51e9a603bb808488cc59742fddebaf6