[INFO] fetching crate unison-protocol 0.1.0-alpha2...
[INFO] testing unison-protocol-0.1.0-alpha2 against 1.90.0 for beta-1.91-3
[INFO] extracting crate unison-protocol 0.1.0-alpha2 into /workspace/builds/worker-3-tc1/source
[INFO] started tweaking crates.io crate unison-protocol 0.1.0-alpha2
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate unison-protocol 0.1.0-alpha2
[INFO] tweaked toml for crates.io crate unison-protocol 0.1.0-alpha2 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate unison-protocol 0.1.0-alpha2 on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate unison-protocol 0.1.0-alpha2 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" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
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[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a6bc9e0e4717a78a7b8f48d00143d4f398a5197bb73d1cda3ddb73a667d0a94a
[INFO] running `Command { std: "docker" "start" "-a" "a6bc9e0e4717a78a7b8f48d00143d4f398a5197bb73d1cda3ddb73a667d0a94a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a6bc9e0e4717a78a7b8f48d00143d4f398a5197bb73d1cda3ddb73a667d0a94a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a6bc9e0e4717a78a7b8f48d00143d4f398a5197bb73d1cda3ddb73a667d0a94a", kill_on_drop: false }`
[INFO] [stdout] a6bc9e0e4717a78a7b8f48d00143d4f398a5197bb73d1cda3ddb73a667d0a94a
[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=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" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f88a148fa290827cacd3c1d5ee541994022786d47169b057e6a58b4814b9b32c
[INFO] running `Command { std: "docker" "start" "-a" "f88a148fa290827cacd3c1d5ee541994022786d47169b057e6a58b4814b9b32c", kill_on_drop: false }`
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[INFO] [stderr]    Compiling cgp-type v0.4.2
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[INFO] [stderr]    Compiling cgp-field v0.4.2
[INFO] [stderr]    Compiling cgp-run v0.4.2
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[INFO] [stderr]    Compiling rust-embed-impl v8.7.2
[INFO] [stderr]    Compiling cgp-core v0.4.2
[INFO] [stderr]    Compiling cgp-handler v0.4.2
[INFO] [stderr]    Compiling cgp-error-extra v0.4.2
[INFO] [stderr]    Compiling cgp-runtime v0.4.2
[INFO] [stderr]    Compiling cgp-dispatch v0.4.2
[INFO] [stderr]    Compiling rust-embed v8.7.2
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[INFO] [stderr]    Compiling cgp v0.4.2
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]    Compiling unison-protocol v0.1.0-alpha2 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unison-protocol@0.1.0-alpha2: Generating development certificates for embedding...
[INFO] [stderr] error: failed to run custom build command for `unison-protocol v0.1.0-alpha2 (/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/unison-protocol-194dbf4f7a05fd4c/build-script-build` (exit status: 1)
[INFO] [stderr]   --- stdout
[INFO] [stderr]   cargo:warning=Generating development certificates for embedding...
[INFO] [stderr] 
[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" "f88a148fa290827cacd3c1d5ee541994022786d47169b057e6a58b4814b9b32c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f88a148fa290827cacd3c1d5ee541994022786d47169b057e6a58b4814b9b32c", kill_on_drop: false }`
[INFO] [stdout] f88a148fa290827cacd3c1d5ee541994022786d47169b057e6a58b4814b9b32c