[INFO] cloning repository https://github.com/FreeMasen/mdbook-presentation-preprocessor
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/FreeMasen/mdbook-presentation-preprocessor" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFreeMasen%2Fmdbook-presentation-preprocessor", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFreeMasen%2Fmdbook-presentation-preprocessor'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 91d74c6cb87fb301e29354220031594877918299
[INFO] checking FreeMasen/mdbook-presentation-preprocessor against try#39e1293fce4b650061e85dda88aa428f726a8444 for pr-88041
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFreeMasen%2Fmdbook-presentation-preprocessor" "/workspace/builds/worker-101/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-101/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/FreeMasen/mdbook-presentation-preprocessor on toolchain 39e1293fce4b650061e85dda88aa428f726a8444
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/FreeMasen/mdbook-presentation-preprocessor
[INFO] finished tweaking git repo https://github.com/FreeMasen/mdbook-presentation-preprocessor
[INFO] tweaked toml for git repo https://github.com/FreeMasen/mdbook-presentation-preprocessor written to /workspace/builds/worker-101/source/Cargo.toml
[INFO] crate git repo https://github.com/FreeMasen/mdbook-presentation-preprocessor already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded getopts v0.2.19
[INFO] [stderr]   Downloaded new_debug_unreachable v1.0.3
[INFO] [stderr]   Downloaded sequence_trie v0.3.6
[INFO] [stderr]   Downloaded toml-query v0.9.2
[INFO] [stderr]   Downloaded elasticlunr-rs v2.3.6
[INFO] [stderr]   Downloaded toml-query_derive v0.9.0
[INFO] [stderr]   Downloaded darling v0.8.6
[INFO] [stderr]   Downloaded darling_macro v0.8.6
[INFO] [stderr]   Downloaded darling_core v0.8.6
[INFO] [stderr]   Downloaded ammonia v2.1.2
[INFO] [stderr]   Downloaded staticfile v0.5.0
[INFO] [stderr]   Downloaded mdbook v0.3.1
[INFO] [stderr]   Downloaded handlebars v2.0.1
[INFO] [stderr]   Downloaded syn v0.15.43
[INFO] [stderr]   Downloaded is-match v0.1.0
[INFO] [stderr]   Downloaded pulldown-cmark v0.5.3
[INFO] [stderr]   Downloaded open v1.3.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-101/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-101/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2f033d6cf60f856badf14155445d619bf40b5779a615eb29820937842564711c
[INFO] running `Command { std: "docker" "start" "-a" "2f033d6cf60f856badf14155445d619bf40b5779a615eb29820937842564711c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2f033d6cf60f856badf14155445d619bf40b5779a615eb29820937842564711c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2f033d6cf60f856badf14155445d619bf40b5779a615eb29820937842564711c", kill_on_drop: false }`
[INFO] [stdout] 2f033d6cf60f856badf14155445d619bf40b5779a615eb29820937842564711c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-101/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-101/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1d627528b4a27f448fb2a0b54c120be297ac65192518a880b9e5fc7fd148d98b
[INFO] running `Command { std: "docker" "start" "-a" "1d627528b4a27f448fb2a0b54c120be297ac65192518a880b9e5fc7fd148d98b", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] error: failed to create jobserver
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   failed to increase jobserver pipe capacity from 4096 to 8192; jobserver otherwise might deadlock
[INFO] running `Command { std: "docker" "inspect" "1d627528b4a27f448fb2a0b54c120be297ac65192518a880b9e5fc7fd148d98b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1d627528b4a27f448fb2a0b54c120be297ac65192518a880b9e5fc7fd148d98b", kill_on_drop: false }`
[INFO] [stdout] 1d627528b4a27f448fb2a0b54c120be297ac65192518a880b9e5fc7fd148d98b