[INFO] fetching crate wpv 0.0.0-alpha.0...
[INFO] checking wpv-0.0.0-alpha.0 against master#c724b67e1b474262917a5154d74e7072267593fe for pr-74315
[INFO] extracting crate wpv 0.0.0-alpha.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate wpv 0.0.0-alpha.0 on toolchain c724b67e1b474262917a5154d74e7072267593fe
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c724b67e1b474262917a5154d74e7072267593fe" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate wpv 0.0.0-alpha.0
[INFO] finished tweaking crates.io crate wpv 0.0.0-alpha.0
[INFO] tweaked toml for crates.io crate wpv 0.0.0-alpha.0 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate crates.io crate wpv 0.0.0-alpha.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c724b67e1b474262917a5154d74e7072267593fe" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+c724b67e1b474262917a5154d74e7072267593fe" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e04667c4a32fcb043673332804a4f0dde3b55be72d3993f738ebca51930d07f9
[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" "e04667c4a32fcb043673332804a4f0dde3b55be72d3993f738ebca51930d07f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e04667c4a32fcb043673332804a4f0dde3b55be72d3993f738ebca51930d07f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e04667c4a32fcb043673332804a4f0dde3b55be72d3993f738ebca51930d07f9", kill_on_drop: false }`
[INFO] [stdout] e04667c4a32fcb043673332804a4f0dde3b55be72d3993f738ebca51930d07f9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+c724b67e1b474262917a5154d74e7072267593fe" "check" "--frozen" "--all" "--all-targets" "--message-format=json", 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] 7a4f931f187f0ef7b7c72bc1b4e48915a2f3f956310e9c441b903239ee24c9f0
[INFO] running `Command { std: "docker" "start" "-a" "7a4f931f187f0ef7b7c72bc1b4e48915a2f3f956310e9c441b903239ee24c9f0", kill_on_drop: false }`
[INFO] [stderr]     Checking wpv v0.0.0-alpha.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.17s
[INFO] running `Command { std: "docker" "inspect" "7a4f931f187f0ef7b7c72bc1b4e48915a2f3f956310e9c441b903239ee24c9f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7a4f931f187f0ef7b7c72bc1b4e48915a2f3f956310e9c441b903239ee24c9f0", kill_on_drop: false }`
[INFO] [stdout] 7a4f931f187f0ef7b7c72bc1b4e48915a2f3f956310e9c441b903239ee24c9f0