[INFO] fetching crate mcup 0.2.3...
[INFO] documenting mcup-0.2.3 against nightly for scrape-examples
[INFO] extracting crate mcup 0.2.3 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate mcup 0.2.3 on toolchain nightly
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+nightly" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mcup 0.2.3
[INFO] finished tweaking crates.io crate mcup 0.2.3
[INFO] tweaked toml for crates.io crate mcup 0.2.3 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate mcup 0.2.3 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+nightly" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded clap v3.0.0
[INFO] [stderr]   Downloaded clap_complete v3.0.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:bb5b0feb4f87116a4ea905b7ff5bf5b85913db05e9f0fbc1abdd3168928d9075" "/opt/rustwide/cargo-home/bin/cargo" "+nightly" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1ea6d911dc23083aab3cf2e6efa215c5cd50062959f94fe5125b73501c6a0c2f
[INFO] running `Command { std: "docker" "start" "-a" "1ea6d911dc23083aab3cf2e6efa215c5cd50062959f94fe5125b73501c6a0c2f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1ea6d911dc23083aab3cf2e6efa215c5cd50062959f94fe5125b73501c6a0c2f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1ea6d911dc23083aab3cf2e6efa215c5cd50062959f94fe5125b73501c6a0c2f", kill_on_drop: false }`
[INFO] [stdout] 1ea6d911dc23083aab3cf2e6efa215c5cd50062959f94fe5125b73501c6a0c2f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "RUSTDOCFLAGS=--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:bb5b0feb4f87116a4ea905b7ff5bf5b85913db05e9f0fbc1abdd3168928d9075" "/opt/rustwide/cargo-home/bin/cargo" "+nightly" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 488bf44f698e7b88dd1d8b997ab584567ae2ddda5fa68cd30cec7e31fd344bbd
[INFO] running `Command { std: "docker" "start" "-a" "488bf44f698e7b88dd1d8b997ab584567ae2ddda5fa68cd30cec7e31fd344bbd", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling libc v0.2.112
[INFO] [stderr]    Compiling hashbrown v0.11.2
[INFO] [stderr]    Compiling anyhow v1.0.52
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling termcolor v1.1.2
[INFO] [stderr]    Compiling textwrap v0.14.2
[INFO] [stderr]    Compiling strsim v0.10.0
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]    Compiling indexmap v1.7.0
[INFO] [stderr]    Compiling os_str_bytes v6.0.0
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]     Checking unicode-width v0.1.9
[INFO] [stderr]     Checking terminal_size v0.1.17
[INFO] [stderr]     Checking once_cell v1.9.0
[INFO] [stderr]    Compiling clap v3.0.0
[INFO] [stderr]     Checking dirs-sys v0.3.6
[INFO] [stderr]     Checking number_prefix v0.4.0
[INFO] [stderr]     Checking same-file v1.0.6
[INFO] [stderr]     Checking directories v4.0.1
[INFO] [stderr]     Checking quick-xml v0.22.0
[INFO] [stderr]     Checking walkdir v2.3.2
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking glob v0.3.0
[INFO] [stderr]     Checking bit-vec v0.6.3
[INFO] [stderr]     Checking console v0.15.0
[INFO] [stderr]     Checking indicatif v0.16.2
[INFO] [stderr]    Compiling clap_complete v3.0.0
[INFO] [stderr]    Compiling mcup v0.2.3 (/opt/rustwide/workdir)
[INFO] [stderr] error: failed to run custom build command for `mcup v0.2.3 (/opt/rustwide/workdir)`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/mcup-76534c3d659d4162/build-script-build` (exit status: 1)
[INFO] [stderr]   --- stderr
[INFO] [stderr]   Error: Read-only file system (os error 30)
[INFO] running `Command { std: "docker" "inspect" "488bf44f698e7b88dd1d8b997ab584567ae2ddda5fa68cd30cec7e31fd344bbd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "488bf44f698e7b88dd1d8b997ab584567ae2ddda5fa68cd30cec7e31fd344bbd", kill_on_drop: false }`
[INFO] [stdout] 488bf44f698e7b88dd1d8b997ab584567ae2ddda5fa68cd30cec7e31fd344bbd