[INFO] fetching crate massdriver_core 0.0.1...
[INFO] checking massdriver_core-0.0.1 against beta for pr-78714
[INFO] extracting crate massdriver_core 0.0.1 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate massdriver_core 0.0.1 on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate massdriver_core 0.0.1
[INFO] finished tweaking crates.io crate massdriver_core 0.0.1
[INFO] tweaked toml for crates.io crate massdriver_core 0.0.1 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate massdriver_core 0.0.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 07dd1529f805a35468dd366fbbe797eb6d6ec76bd697b608e44c98f9c98216fc
[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" "07dd1529f805a35468dd366fbbe797eb6d6ec76bd697b608e44c98f9c98216fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "07dd1529f805a35468dd366fbbe797eb6d6ec76bd697b608e44c98f9c98216fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "07dd1529f805a35468dd366fbbe797eb6d6ec76bd697b608e44c98f9c98216fc", kill_on_drop: false }`
[INFO] [stdout] 07dd1529f805a35468dd366fbbe797eb6d6ec76bd697b608e44c98f9c98216fc
[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=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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 870f6ce982f76f87ce0be0241fd4bf9ae48a1a2b579620a70a8abb6c6bc4879c
[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" "870f6ce982f76f87ce0be0241fd4bf9ae48a1a2b579620a70a8abb6c6bc4879c", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.16
[INFO] [stderr]    Compiling proc-macro-nested v0.1.3
[INFO] [stderr]     Checking futures-core v0.3.4
[INFO] [stderr]     Checking futures-task v0.3.4
[INFO] [stderr]     Checking pin-utils v0.1.0-alpha.4
[INFO] [stderr]    Compiling gio v0.8.1
[INFO] [stderr]    Compiling cairo-rs v0.8.1
[INFO] [stderr]     Checking futures-io v0.3.4
[INFO] [stderr]    Compiling gdk-pixbuf v0.8.0
[INFO] [stderr]    Compiling pango v0.8.0
[INFO] [stderr]    Compiling gdk v0.12.1
[INFO] [stderr]    Compiling atk v0.8.0
[INFO] [stderr]    Compiling gtk v0.8.1
[INFO] [stderr]    Compiling glib-sys v0.9.1
[INFO] [stderr]    Compiling gobject-sys v0.9.1
[INFO] [stderr]    Compiling gio-sys v0.9.1
[INFO] [stderr]    Compiling gdk-pixbuf-sys v0.9.1
[INFO] [stderr]    Compiling pango-sys v0.9.1
[INFO] [stderr]    Compiling cairo-sys-rs v0.9.2
[INFO] [stderr]    Compiling gdk-sys v0.9.1
[INFO] [stderr]    Compiling atk-sys v0.9.1
[INFO] [stderr]    Compiling gtk-sys v0.9.2
[INFO] [stderr]     Checking futures-channel v0.3.4
[INFO] [stderr]    Compiling proc-macro-hack v0.5.11
[INFO] [stderr]    Compiling futures-macro v0.3.4
[INFO] [stderr]     Checking futures-util v0.3.4
[INFO] [stderr]     Checking futures-executor v0.3.4
[INFO] [stderr]     Checking glib v0.9.3
[INFO] [stderr]     Checking massdriver_core v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 49s
[INFO] running `Command { std: "docker" "inspect" "870f6ce982f76f87ce0be0241fd4bf9ae48a1a2b579620a70a8abb6c6bc4879c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "870f6ce982f76f87ce0be0241fd4bf9ae48a1a2b579620a70a8abb6c6bc4879c", kill_on_drop: false }`
[INFO] [stdout] 870f6ce982f76f87ce0be0241fd4bf9ae48a1a2b579620a70a8abb6c6bc4879c