[INFO] cloning repository https://github.com/mfcastellani/nickos
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mfcastellani/nickos" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmfcastellani%2Fnickos", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmfcastellani%2Fnickos'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 18a704e5efd94cf730e87c381e3c9574777ac0e8
[INFO] checking mfcastellani/nickos against try#39e1293fce4b650061e85dda88aa428f726a8444 for pr-88041
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmfcastellani%2Fnickos" "/workspace/builds/worker-78/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-78/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mfcastellani/nickos 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] removed /workspace/builds/worker-78/source/.cargo/config
[INFO] removed /workspace/builds/worker-78/source/rust-toolchain
[INFO] started tweaking git repo https://github.com/mfcastellani/nickos
[INFO] removed 0 missing tests
[INFO] finished tweaking git repo https://github.com/mfcastellani/nickos
[INFO] tweaked toml for git repo https://github.com/mfcastellani/nickos written to /workspace/builds/worker-78/source/Cargo.toml
[INFO] crate git repo https://github.com/mfcastellani/nickos 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 volatile v0.2.6
[INFO] [stderr]   Downloaded cpuio v0.3.0
[INFO] [stderr]   Downloaded pic8259_simple v0.2.0
[INFO] [stderr]   Downloaded spinning_top v0.1.0
[INFO] [stderr]   Downloaded conquer-once v0.2.0
[INFO] [stderr]   Downloaded pc-keyboard v0.5.0
[INFO] [stderr]   Downloaded bootloader v0.9.4
[INFO] [stderr]   Downloaded conquer-util v0.2.0
[INFO] [stderr]   Downloaded linked_list_allocator v0.8.4
[INFO] [stderr]   Downloaded uart_16550 v0.2.7
[INFO] [stderr]   Downloaded x86_64 v0.11.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-78/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-78/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] d56b05114c18a734ec8942191504ad29a7adc3ac9a27322472280a731f55c2a2
[INFO] running `Command { std: "docker" "start" "-a" "d56b05114c18a734ec8942191504ad29a7adc3ac9a27322472280a731f55c2a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d56b05114c18a734ec8942191504ad29a7adc3ac9a27322472280a731f55c2a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d56b05114c18a734ec8942191504ad29a7adc3ac9a27322472280a731f55c2a2", kill_on_drop: false }`
[INFO] [stdout] d56b05114c18a734ec8942191504ad29a7adc3ac9a27322472280a731f55c2a2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-78/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-78/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] 8f77af2ff882541efda5359ab3c5ff4dbfaa74a1825080498c105c0cd053d7e5
[INFO] running `Command { std: "docker" "start" "-a" "8f77af2ff882541efda5359ab3c5ff4dbfaa74a1825080498c105c0cd053d7e5", 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" "8f77af2ff882541efda5359ab3c5ff4dbfaa74a1825080498c105c0cd053d7e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8f77af2ff882541efda5359ab3c5ff4dbfaa74a1825080498c105c0cd053d7e5", kill_on_drop: false }`
[INFO] [stdout] 8f77af2ff882541efda5359ab3c5ff4dbfaa74a1825080498c105c0cd053d7e5