[INFO] fetching crate i3_ipc 0.11.0...
[INFO] checking i3_ipc-0.11.0 against beta for pr-78714
[INFO] extracting crate i3_ipc 0.11.0 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate i3_ipc 0.11.0 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 i3_ipc 0.11.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate i3_ipc 0.11.0
[INFO] tweaked toml for crates.io crate i3_ipc 0.11.0 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate crates.io crate i3_ipc 0.11.0 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 11e591e877f8ceb7d110effe716191f072484e2eee0f947601832d5315b995a3
[INFO] running `Command { std: "docker" "start" "-a" "11e591e877f8ceb7d110effe716191f072484e2eee0f947601832d5315b995a3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "11e591e877f8ceb7d110effe716191f072484e2eee0f947601832d5315b995a3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "11e591e877f8ceb7d110effe716191f072484e2eee0f947601832d5315b995a3", kill_on_drop: false }`
[INFO] [stdout] 11e591e877f8ceb7d110effe716191f072484e2eee0f947601832d5315b995a3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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] 02811ed077cbeabd37bdf4ba2d79e59e1a94edb925de77f6a6801af0dd10ae21
[INFO] running `Command { std: "docker" "start" "-a" "02811ed077cbeabd37bdf4ba2d79e59e1a94edb925de77f6a6801af0dd10ae21", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.42
[INFO] [stderr]    Compiling serde_derive v1.0.116
[INFO] [stderr]    Compiling serde v1.0.116
[INFO] [stderr]    Compiling serde_json v1.0.58
[INFO] [stderr]    Compiling serde_repr v0.1.6
[INFO] [stderr]     Checking i3ipc-types v0.11.0
[INFO] [stderr]     Checking i3_ipc v0.11.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 33.30s
[INFO] running `Command { std: "docker" "inspect" "02811ed077cbeabd37bdf4ba2d79e59e1a94edb925de77f6a6801af0dd10ae21", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "02811ed077cbeabd37bdf4ba2d79e59e1a94edb925de77f6a6801af0dd10ae21", kill_on_drop: false }`
[INFO] [stdout] 02811ed077cbeabd37bdf4ba2d79e59e1a94edb925de77f6a6801af0dd10ae21