[INFO] cloning repository https://github.com/Yamakaky/rvpn
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Yamakaky/rvpn" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FYamakaky%2Frvpn", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FYamakaky%2Frvpn'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5baa44e978b4acfa65280faab552f488221f88cb
[INFO] checking Yamakaky/rvpn against try#ff4041081a39fb2e940a03a55f86a4ad0b37d26a for pr-80763
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FYamakaky%2Frvpn" "/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/Yamakaky/rvpn on toolchain ff4041081a39fb2e940a03a55f86a4ad0b37d26a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ff4041081a39fb2e940a03a55f86a4ad0b37d26a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Yamakaky/rvpn
[INFO] finished tweaking git repo https://github.com/Yamakaky/rvpn
[INFO] tweaked toml for git repo https://github.com/Yamakaky/rvpn written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/Yamakaky/rvpn already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ff4041081a39fb2e940a03a55f86a4ad0b37d26a" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `git://github.com/Yamakaky/tun-rs.git`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ioctl v0.3.3
[INFO] [stderr]   Downloaded error-chain v0.7.1
[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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+ff4041081a39fb2e940a03a55f86a4ad0b37d26a" "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] b32e5afc6fe4f20454790537684ac821d4b71a4b49233dffe559aabeb6a2f0c8
[INFO] running `Command { std: "docker" "start" "-a" "b32e5afc6fe4f20454790537684ac821d4b71a4b49233dffe559aabeb6a2f0c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b32e5afc6fe4f20454790537684ac821d4b71a4b49233dffe559aabeb6a2f0c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b32e5afc6fe4f20454790537684ac821d4b71a4b49233dffe559aabeb6a2f0c8", kill_on_drop: false }`
[INFO] [stdout] b32e5afc6fe4f20454790537684ac821d4b71a4b49233dffe559aabeb6a2f0c8
[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=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" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+ff4041081a39fb2e940a03a55f86a4ad0b37d26a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", 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] d8b802dc6618a4160dbddbfca5e6949640f1484536de06829c9cfb5e9e734728
[INFO] running `Command { std: "docker" "start" "-a" "d8b802dc6618a4160dbddbfca5e6949640f1484536de06829c9cfb5e9e734728", kill_on_drop: false }`
[INFO] [stderr]    Compiling winapi-build v0.1.1
[INFO] [stderr]     Checking libc v0.2.18
[INFO] [stderr]     Checking cfg-if v0.1.0
[INFO] [stderr]    Compiling gcc v0.3.40
[INFO] [stderr]     Checking winapi v0.2.8
[INFO] [stderr]     Checking log v0.3.6
[INFO] [stderr]     Checking lazycell v0.4.0
[INFO] [stderr]     Checking rustc-demangle v0.1.3
[INFO] [stderr]     Checking slab v0.3.0
[INFO] [stderr]    Compiling dbghelp-sys v0.2.0
[INFO] [stderr]    Compiling kernel32-sys v0.2.2
[INFO] [stderr]     Checking futures v0.1.6
[INFO] [stderr]     Checking net2 v0.2.26
[INFO] [stderr]     Checking nix v0.7.0
[INFO] [stderr]     Checking ioctl v0.3.3
[INFO] [stderr]    Compiling backtrace v0.3.0
[INFO] [stdout] error[E0365]: `real_libc` is private, and cannot be re-exported
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/ioctl-0.3.3/src/lib.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub use real_libc as libc;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^ re-export of private `real_libc`
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider declaring type or module `real_libc` with `pub`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling backtrace-sys v0.1.5
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0365`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ioctl`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "d8b802dc6618a4160dbddbfca5e6949640f1484536de06829c9cfb5e9e734728", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d8b802dc6618a4160dbddbfca5e6949640f1484536de06829c9cfb5e9e734728", kill_on_drop: false }`
[INFO] [stdout] d8b802dc6618a4160dbddbfca5e6949640f1484536de06829c9cfb5e9e734728