[INFO] fetching crate system-interface 0.6.3...
[INFO] checking system-interface-0.6.3 against try#45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4 for pr-83744
[INFO] extracting crate system-interface 0.6.3 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate system-interface 0.6.3 on toolchain 45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate system-interface 0.6.3
[INFO] finished tweaking crates.io crate system-interface 0.6.3
[INFO] tweaked toml for crates.io crate system-interface 0.6.3 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded os_pipe v0.9.2
[INFO] [stderr]   Downloaded rustc_version v0.3.3
[INFO] [stderr]   Downloaded arf-strings v0.3.0
[INFO] [stderr]   Downloaded io-close v0.3.7
[INFO] [stderr]   Downloaded posish v0.6.1
[INFO] [stderr]   Downloaded unsafe-io v0.6.2
[INFO] [stderr]   Downloaded socketpair v0.6.2
[INFO] [stderr]   Downloaded char-device v0.3.2
[INFO] [stderr]   Downloaded cap-async-std v0.13.9
[INFO] [stderr]   Downloaded cap-primitives v0.13.9
[INFO] [stderr]   Downloaded fs-set-times v0.3.1
[INFO] [stderr]   Downloaded cap-std v0.13.9
[INFO] [stderr]   Downloaded maybe-owned v0.3.4
[INFO] [stderr]   Downloaded ssh2 v0.9.1
[INFO] [stderr]   Downloaded cap-fs-ext v0.13.9
[INFO] [stderr]   Downloaded winx v0.23.0
[INFO] [stderr]   Downloaded cap-tempfile v0.13.9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] db58d09ca3b4f39e3f8d9643f5438c024586838499613d2c8c0009ef64629abf
[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" "db58d09ca3b4f39e3f8d9643f5438c024586838499613d2c8c0009ef64629abf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "db58d09ca3b4f39e3f8d9643f5438c024586838499613d2c8c0009ef64629abf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "db58d09ca3b4f39e3f8d9643f5438c024586838499613d2c8c0009ef64629abf", kill_on_drop: false }`
[INFO] [stdout] db58d09ca3b4f39e3f8d9643f5438c024586838499613d2c8c0009ef64629abf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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=forbid" "-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:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1becb88c0343e007dbdd56e389be847bc85b871ef7e46626b87132062c493fbb
[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" "1becb88c0343e007dbdd56e389be847bc85b871ef7e46626b87132062c493fbb", kill_on_drop: false }`
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling getrandom v0.2.2
[INFO] [stderr]     Checking once_cell v1.7.2
[INFO] [stderr]     Checking maybe-owned v0.3.4
[INFO] [stderr]     Checking ipnet v2.3.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]     Checking remove_dir_all v0.5.3
[INFO] [stderr]    Compiling semver v0.11.0
[INFO] [stderr]     Checking errno v0.2.7
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]    Compiling rustc_version v0.3.3
[INFO] [stderr]     Checking rand_core v0.6.2
[INFO] [stderr]     Checking uuid v0.8.2
[INFO] [stderr]    Compiling unsafe-io v0.6.2
[INFO] [stderr]    Compiling cap-primitives v0.13.9
[INFO] [stderr]    Compiling cap-std v0.13.9
[INFO] [stderr]    Compiling cap-fs-ext v0.13.9
[INFO] [stderr]    Compiling system-interface v0.6.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking rand_chacha v0.3.0
[INFO] [stderr]     Checking rand v0.8.3
[INFO] [stderr]     Checking posish v0.6.1
[INFO] [stderr]     Checking tempfile v3.2.0
[INFO] [stderr]     Checking fs-set-times v0.3.1
[INFO] [stderr]     Checking cap-tempfile v0.13.9
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.75s
[INFO] running `Command { std: "docker" "inspect" "1becb88c0343e007dbdd56e389be847bc85b871ef7e46626b87132062c493fbb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1becb88c0343e007dbdd56e389be847bc85b871ef7e46626b87132062c493fbb", kill_on_drop: false }`
[INFO] [stdout] 1becb88c0343e007dbdd56e389be847bc85b871ef7e46626b87132062c493fbb