[INFO] fetching crate ctor 0.1.16...
[INFO] checking ctor-0.1.16 against beta for pr-78714
[INFO] extracting crate ctor 0.1.16 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate ctor 0.1.16 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 ctor 0.1.16
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate ctor 0.1.16
[INFO] tweaked toml for crates.io crate ctor 0.1.16 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate crates.io crate ctor 0.1.16 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-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] d7fd71599435dc417bfa12e47e6a69b5b00b8d1012d96c31fee76b4eede4fcb9
[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" "d7fd71599435dc417bfa12e47e6a69b5b00b8d1012d96c31fee76b4eede4fcb9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d7fd71599435dc417bfa12e47e6a69b5b00b8d1012d96c31fee76b4eede4fcb9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d7fd71599435dc417bfa12e47e6a69b5b00b8d1012d96c31fee76b4eede4fcb9", kill_on_drop: false }`
[INFO] [stdout] d7fd71599435dc417bfa12e47e6a69b5b00b8d1012d96c31fee76b4eede4fcb9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] c7405f845ab4e732b02c3e9ae5f1a6927c9c7a6ec76c307456705bb241fb1f9f
[INFO] running `Command { std: "docker" "start" "-a" "c7405f845ab4e732b02c3e9ae5f1a6927c9c7a6ec76c307456705bb241fb1f9f", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.21
[INFO] [stderr]    Compiling syn v1.0.41
[INFO] [stderr]    Compiling libc v0.2.77
[INFO] [stderr]     Checking quote v1.0.7
[INFO] [stderr]     Checking libc-print v0.1.14
[INFO] [stderr]     Checking ctor v0.1.16 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 14.44s
[INFO] running `Command { std: "docker" "inspect" "c7405f845ab4e732b02c3e9ae5f1a6927c9c7a6ec76c307456705bb241fb1f9f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c7405f845ab4e732b02c3e9ae5f1a6927c9c7a6ec76c307456705bb241fb1f9f", kill_on_drop: false }`
[INFO] [stdout] c7405f845ab4e732b02c3e9ae5f1a6927c9c7a6ec76c307456705bb241fb1f9f