[INFO] cloning repository https://github.com/jackie-h/rust-ffi-examples
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jackie-h/rust-ffi-examples" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjackie-h%2Frust-ffi-examples", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjackie-h%2Frust-ffi-examples'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] dc885526ebb7fa77c6f40ae981c427c8318a0997
[INFO] checking jackie-h/rust-ffi-examples against try#39e1293fce4b650061e85dda88aa428f726a8444 for pr-88041
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjackie-h%2Frust-ffi-examples" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jackie-h/rust-ffi-examples 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 git repo https://github.com/jackie-h/rust-ffi-examples
[INFO] finished tweaking git repo https://github.com/jackie-h/rust-ffi-examples
[INFO] tweaked toml for git repo https://github.com/jackie-h/rust-ffi-examples written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/jackie-h/rust-ffi-examples 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] a6bb6002d2a68e11efe0eb5edee6d457032d5820562f43c37d920d3c67f354d9
[INFO] running `Command { std: "docker" "start" "-a" "a6bb6002d2a68e11efe0eb5edee6d457032d5820562f43c37d920d3c67f354d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a6bb6002d2a68e11efe0eb5edee6d457032d5820562f43c37d920d3c67f354d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a6bb6002d2a68e11efe0eb5edee6d457032d5820562f43c37d920d3c67f354d9", kill_on_drop: false }`
[INFO] [stdout] a6bb6002d2a68e11efe0eb5edee6d457032d5820562f43c37d920d3c67f354d9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] 07f3d801a039908fee5eb15c8019901737f5de02471c266f524288cb330e98c5
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "07f3d801a039908fee5eb15c8019901737f5de02471c266f524288cb330e98c5", kill_on_drop: false }`
[INFO] [stderr]    Compiling cpp_examples v0.1.0 (/opt/rustwide/workdir/cpp_examples)
[INFO] [stderr] error: failed to run custom build command for `cpp_examples v0.1.0 (/opt/rustwide/workdir/cpp_examples)`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/cpp_examples-e7ff6942baa93eda/build-script-build` (exit status: 1)
[INFO] [stderr]   --- stderr
[INFO] [stderr] 
[INFO] [stderr] 
[INFO] [stderr]   error occurred: Read-only file system (os error 30)
[INFO] [stderr] 
[INFO] [stderr] 
[INFO] running `Command { std: "docker" "inspect" "07f3d801a039908fee5eb15c8019901737f5de02471c266f524288cb330e98c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "07f3d801a039908fee5eb15c8019901737f5de02471c266f524288cb330e98c5", kill_on_drop: false }`
[INFO] [stdout] 07f3d801a039908fee5eb15c8019901737f5de02471c266f524288cb330e98c5