[INFO] cloning repository https://github.com/rust-cxx/zlib-c
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rust-cxx/zlib-c" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frust-cxx%2Fzlib-c", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frust-cxx%2Fzlib-c'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 847d8d435dedc026aec741eac80f6c929bb6a3c6
[INFO] testing rust-cxx/zlib-c against 1.49.0 for beta-1.50-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frust-cxx%2Fzlib-c" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/rust-cxx/zlib-c on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/rust-cxx/zlib-c
[INFO] finished tweaking git repo https://github.com/rust-cxx/zlib-c
[INFO] tweaked toml for git repo https://github.com/rust-cxx/zlib-c written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/rust-cxx/zlib-c already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3caa601fb4a8d63df69ffeb7c15e5fe0760365047f94caf7d1736578b693254e
[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" "3caa601fb4a8d63df69ffeb7c15e5fe0760365047f94caf7d1736578b693254e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3caa601fb4a8d63df69ffeb7c15e5fe0760365047f94caf7d1736578b693254e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3caa601fb4a8d63df69ffeb7c15e5fe0760365047f94caf7d1736578b693254e", kill_on_drop: false }`
[INFO] [stdout] 3caa601fb4a8d63df69ffeb7c15e5fe0760365047f94caf7d1736578b693254e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 21a594cc43f5d4aeb3315e4b3e6f8d8722b1a97ed794ca354b95cd33a27a540e
[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" "21a594cc43f5d4aeb3315e4b3e6f8d8722b1a97ed794ca354b95cd33a27a540e", kill_on_drop: false }`
[INFO] [stderr]    Compiling cc v1.0.26
[INFO] [stderr]    Compiling argparse v0.2.2
[INFO] [stderr]    Compiling cmake v0.1.35
[INFO] [stderr]    Compiling cargo-cxx v0.1.2
[INFO] [stderr]    Compiling zlib v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: could not find native static library `zlib`, perhaps an -L flag is missing?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `zlib`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "21a594cc43f5d4aeb3315e4b3e6f8d8722b1a97ed794ca354b95cd33a27a540e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "21a594cc43f5d4aeb3315e4b3e6f8d8722b1a97ed794ca354b95cd33a27a540e", kill_on_drop: false }`
[INFO] [stdout] 21a594cc43f5d4aeb3315e4b3e6f8d8722b1a97ed794ca354b95cd33a27a540e