[INFO] fetching crate serde-frontmatter 0.1.0...
[INFO] checking serde-frontmatter-0.1.0 against try#cac44d9528e3bbbdaa1537d187bd489ccc5de18c for pr-91141
[INFO] extracting crate serde-frontmatter 0.1.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate serde-frontmatter 0.1.0 on toolchain cac44d9528e3bbbdaa1537d187bd489ccc5de18c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate serde-frontmatter 0.1.0
[INFO] finished tweaking crates.io crate serde-frontmatter 0.1.0
[INFO] tweaked toml for crates.io crate serde-frontmatter 0.1.0 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9f976fe431cb56fe6608eb62762a40c679e710e16933af9b2fd8974d94142b07
[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" "9f976fe431cb56fe6608eb62762a40c679e710e16933af9b2fd8974d94142b07", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9f976fe431cb56fe6608eb62762a40c679e710e16933af9b2fd8974d94142b07", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9f976fe431cb56fe6608eb62762a40c679e710e16933af9b2fd8974d94142b07", kill_on_drop: false }`
[INFO] [stdout] 9f976fe431cb56fe6608eb62762a40c679e710e16933af9b2fd8974d94142b07
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 800c1f2456cb8d3938efbcc28bf10d179d632cd46cd62c3624663f5098c8fc58
[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" "800c1f2456cb8d3938efbcc28bf10d179d632cd46cd62c3624663f5098c8fc58", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]     Checking hashbrown v0.11.2
[INFO] [stderr]     Checking dtoa v0.4.8
[INFO] [stderr]     Checking yaml-rust v0.4.5
[INFO] [stderr]    Compiling indexmap v1.7.0
[INFO] [stderr]     Checking serde_yaml v0.8.21
[INFO] [stderr]     Checking serde-frontmatter v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.00s
[INFO] running `Command { std: "docker" "inspect" "800c1f2456cb8d3938efbcc28bf10d179d632cd46cd62c3624663f5098c8fc58", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "800c1f2456cb8d3938efbcc28bf10d179d632cd46cd62c3624663f5098c8fc58", kill_on_drop: false }`
[INFO] [stdout] 800c1f2456cb8d3938efbcc28bf10d179d632cd46cd62c3624663f5098c8fc58