[INFO] fetching crate mdrend-learning-project-not-for-public-use 0.1.0...
[INFO] checking mdrend-learning-project-not-for-public-use-0.1.0 against try#39e1293fce4b650061e85dda88aa428f726a8444 for pr-88041
[INFO] extracting crate mdrend-learning-project-not-for-public-use 0.1.0 into /workspace/builds/worker-40/source
[INFO] validating manifest of crates.io crate mdrend-learning-project-not-for-public-use 0.1.0 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 crates.io crate mdrend-learning-project-not-for-public-use 0.1.0
[INFO] finished tweaking crates.io crate mdrend-learning-project-not-for-public-use 0.1.0
[INFO] tweaked toml for crates.io crate mdrend-learning-project-not-for-public-use 0.1.0 written to /workspace/builds/worker-40/source/Cargo.toml
[INFO] crate crates.io crate mdrend-learning-project-not-for-public-use 0.1.0 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-40/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-40/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] e03286906bf8e4cabb528b4982099a4badc84d9b368953c2481729c00a513838
[INFO] running `Command { std: "docker" "start" "-a" "e03286906bf8e4cabb528b4982099a4badc84d9b368953c2481729c00a513838", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e03286906bf8e4cabb528b4982099a4badc84d9b368953c2481729c00a513838", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e03286906bf8e4cabb528b4982099a4badc84d9b368953c2481729c00a513838", kill_on_drop: false }`
[INFO] [stdout] e03286906bf8e4cabb528b4982099a4badc84d9b368953c2481729c00a513838
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-40/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-40/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] 089e600518f8a07348986fc2258afc7ac271b4196d186dd9e3f06e8f4e2f5ce8
[INFO] running `Command { std: "docker" "start" "-a" "089e600518f8a07348986fc2258afc7ac271b4196d186dd9e3f06e8f4e2f5ce8", kill_on_drop: false }`
[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" "089e600518f8a07348986fc2258afc7ac271b4196d186dd9e3f06e8f4e2f5ce8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "089e600518f8a07348986fc2258afc7ac271b4196d186dd9e3f06e8f4e2f5ce8", kill_on_drop: false }`
[INFO] [stdout] 089e600518f8a07348986fc2258afc7ac271b4196d186dd9e3f06e8f4e2f5ce8