[INFO] cloning repository https://github.com/aRustyDev/mdbook-frontmatter
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/aRustyDev/mdbook-frontmatter" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FaRustyDev%2Fmdbook-frontmatter", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FaRustyDev%2Fmdbook-frontmatter'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 33d34922daf325693995ce19c64f83b498962ac2
[INFO] checking aRustyDev/mdbook-frontmatter against master#f8463896a9b36a04899c013bd8825a7fd29dd7a4 for pr-151920
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FaRustyDev%2Fmdbook-frontmatter" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/aRustyDev/mdbook-frontmatter
[INFO] finished tweaking git repo https://github.com/aRustyDev/mdbook-frontmatter
[INFO] tweaked toml for git repo https://github.com/aRustyDev/mdbook-frontmatter written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/aRustyDev/mdbook-frontmatter on toolchain f8463896a9b36a04899c013bd8825a7fd29dd7a4
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f8463896a9b36a04899c013bd8825a7fd29dd7a4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/aRustyDev/mdbook-frontmatter already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f8463896a9b36a04899c013bd8825a7fd29dd7a4" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ryu v1.0.21
[INFO] [stderr]   Downloaded pulldown-cmark-escape v0.10.1
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[INFO] [stderr]   Downloaded pest_generator v2.8.4
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[INFO] [stderr]   Downloaded pest_derive v2.8.4
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[INFO] [stderr]   Downloaded fraction v0.15.3
[INFO] [stderr]   Downloaded jsonschema v0.18.3
[INFO] [stderr]   Downloaded elasticlunr-rs v3.0.2
[INFO] [stderr]   Downloaded handlebars v6.3.2
[INFO] [stderr]   Downloaded pest v2.8.4
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[INFO] [stderr]   Downloaded serde_json v1.0.146
[INFO] [stderr]   Downloaded ammonia v4.1.2
[INFO] [stderr]   Downloaded pulldown-cmark v0.10.3
[INFO] [stderr]   Downloaded mdbook v0.4.52
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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@sha256:61361fe0aef631f17e9d025a70c5a647956f8c671dd02950a60ad3f5cc5526d7" "/opt/rustwide/cargo-home/bin/cargo" "+f8463896a9b36a04899c013bd8825a7fd29dd7a4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1bbc6c0bcde4ba3c5b47ac45012d412ff1e219411a82679e717855cc97c0922e
[INFO] running `Command { std: "docker" "start" "-a" "1bbc6c0bcde4ba3c5b47ac45012d412ff1e219411a82679e717855cc97c0922e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1bbc6c0bcde4ba3c5b47ac45012d412ff1e219411a82679e717855cc97c0922e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1bbc6c0bcde4ba3c5b47ac45012d412ff1e219411a82679e717855cc97c0922e", kill_on_drop: false }`
[INFO] [stdout] 1bbc6c0bcde4ba3c5b47ac45012d412ff1e219411a82679e717855cc97c0922e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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" "RUSTDOCFLAGS=--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@sha256:61361fe0aef631f17e9d025a70c5a647956f8c671dd02950a60ad3f5cc5526d7" "/opt/rustwide/cargo-home/bin/cargo" "+f8463896a9b36a04899c013bd8825a7fd29dd7a4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 50426e6fa4a02758880de811dcd4b1fce7fdf7d60fccff36f2f3da935460f7ef
[INFO] running `Command { std: "docker" "start" "-a" "50426e6fa4a02758880de811dcd4b1fce7fdf7d60fccff36f2f3da935460f7ef", kill_on_drop: false }`
[INFO] [stderr]     Checking itoa v1.0.16
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[INFO] [stderr]     Checking ryu v1.0.21
[INFO] [stderr]    Compiling rustix v1.1.2
[INFO] [stderr]    Compiling serde_json v1.0.146
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[INFO] [stderr]     Checking mdbook-frontmatter v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 05s
[INFO] running `Command { std: "docker" "inspect" "50426e6fa4a02758880de811dcd4b1fce7fdf7d60fccff36f2f3da935460f7ef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "50426e6fa4a02758880de811dcd4b1fce7fdf7d60fccff36f2f3da935460f7ef", kill_on_drop: false }`
[INFO] [stdout] 50426e6fa4a02758880de811dcd4b1fce7fdf7d60fccff36f2f3da935460f7ef