[INFO] fetching crate libpreflate-sys 0.1.0...
[INFO] testing libpreflate-sys-0.1.0 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate libpreflate-sys 0.1.0 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate libpreflate-sys 0.1.0
[INFO] finished tweaking crates.io crate libpreflate-sys 0.1.0
[INFO] tweaked toml for crates.io crate libpreflate-sys 0.1.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate libpreflate-sys 0.1.0 on toolchain beta-2025-09-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 34 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a4a08cfc1e46744afa56263062aed07accdf82410c96be99f5907bc8edd8ef63
[INFO] running `Command { std: "docker" "start" "-a" "a4a08cfc1e46744afa56263062aed07accdf82410c96be99f5907bc8edd8ef63", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a4a08cfc1e46744afa56263062aed07accdf82410c96be99f5907bc8edd8ef63", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a4a08cfc1e46744afa56263062aed07accdf82410c96be99f5907bc8edd8ef63", kill_on_drop: false }`
[INFO] [stdout] a4a08cfc1e46744afa56263062aed07accdf82410c96be99f5907bc8edd8ef63
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6da6f91ebe436faa34c91faff497c70eaf5055316b9094479d14c92f9ceb5953
[INFO] running `Command { std: "docker" "start" "-a" "6da6f91ebe436faa34c91faff497c70eaf5055316b9094479d14c92f9ceb5953", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.101
[INFO] [stderr]    Compiling hashbrown v0.16.0
[INFO] [stderr]    Compiling link-cplusplus v1.0.12
[INFO] [stderr]    Compiling scratch v1.0.9
[INFO] [stderr]    Compiling cxxbridge-flags v1.0.186
[INFO] [stderr]    Compiling unicode-width v0.2.1
[INFO] [stderr]    Compiling termcolor v1.4.1
[INFO] [stderr]    Compiling cmake v0.1.54
[INFO] [stderr]    Compiling foldhash v0.2.0
[INFO] [stderr]    Compiling cxx v1.0.186
[INFO] [stderr]    Compiling codespan-reporting v0.12.0
[INFO] [stderr]    Compiling quote v1.0.41
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]    Compiling indexmap v2.11.4
[INFO] [stderr]    Compiling cxx-build v1.0.186
[INFO] [stderr]    Compiling cxxbridge-macro v1.0.186
[INFO] [stderr]    Compiling libpreflate-sys v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error: failed to run custom build command for `libpreflate-sys v0.1.0 (/opt/rustwide/workdir)`
[INFO] [stderr] note: To improve backtraces for build dependencies, set the CARGO_PROFILE_DEV_BUILD_OVERRIDE_DEBUG=true environment variable to enable debug information generation.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/libpreflate-sys-7d03f765bfd71f19/build-script-build` (exit status: 1)
[INFO] [stderr]   --- stderr
[INFO] [stderr]   Error: Os { code: 30, kind: ReadOnlyFilesystem, message: "Read-only file system" }
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "6da6f91ebe436faa34c91faff497c70eaf5055316b9094479d14c92f9ceb5953", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6da6f91ebe436faa34c91faff497c70eaf5055316b9094479d14c92f9ceb5953", kill_on_drop: false }`
[INFO] [stdout] 6da6f91ebe436faa34c91faff497c70eaf5055316b9094479d14c92f9ceb5953