[INFO] cloning repository https://github.com/sbeckeriv/greedy-color
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sbeckeriv/greedy-color" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsbeckeriv%2Fgreedy-color", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsbeckeriv%2Fgreedy-color'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] fb88ba8f338e4944da2a6998635fca5f393715db
[INFO] checking sbeckeriv/greedy-color against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsbeckeriv%2Fgreedy-color" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sbeckeriv/greedy-color on toolchain f47dd4da3ae8c32c9e65d307bfe640b143e674df
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/sbeckeriv/greedy-color
[INFO] finished tweaking git repo https://github.com/sbeckeriv/greedy-color
[INFO] tweaked toml for git repo https://github.com/sbeckeriv/greedy-color written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/sbeckeriv/greedy-color already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded libc v0.2.11
[INFO] [stderr]   Downloaded ruby-sys v0.2.17
[INFO] [stderr]   Downloaded ruru v0.9.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "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] 9cf06ca96fcadcb92b16b0ff5bb802f9dc6f266eb7ab8384ea74ecb0eb4b50bb
[INFO] running `Command { std: "docker" "start" "-a" "9cf06ca96fcadcb92b16b0ff5bb802f9dc6f266eb7ab8384ea74ecb0eb4b50bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9cf06ca96fcadcb92b16b0ff5bb802f9dc6f266eb7ab8384ea74ecb0eb4b50bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9cf06ca96fcadcb92b16b0ff5bb802f9dc6f266eb7ab8384ea74ecb0eb4b50bb", kill_on_drop: false }`
[INFO] [stdout] 9cf06ca96fcadcb92b16b0ff5bb802f9dc6f266eb7ab8384ea74ecb0eb4b50bb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 53609f0e084349ba6894a7817801a62a3222103cc97e2d1ab7be1c1ae7231010
[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" "53609f0e084349ba6894a7817801a62a3222103cc97e2d1ab7be1c1ae7231010", kill_on_drop: false }`
[INFO] [stderr]    Compiling ruby-sys v0.2.17
[INFO] [stderr]     Checking libc v0.2.11
[INFO] [stderr]     Checking ruru v0.9.1
[INFO] [stdout] error[E0133]: use of extern static is unsafe and requires unsafe function or block
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/ruru-0.9.1/src/class/class.rs:137:53
[INFO] [stdout]     |
[INFO] [stdout] 137 |         Self::from(binding_util::get_constant(name, rb_cObject))
[INFO] [stdout]     |                                                     ^^^^^^^^^^ use of extern static
[INFO] [stdout]     |
[INFO] [stdout]     = note: extern statics are not controlled by the Rust type system: invalid data, aliasing violations or data races will cause undefined behavior
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0133]: use of extern static is unsafe and requires unsafe function or block
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/ruru-0.9.1/src/class/class.rs:574:21
[INFO] [stdout]     |
[INFO] [stdout] 574 |             None => rb_cObject,
[INFO] [stdout]     |                     ^^^^^^^^^^ use of extern static
[INFO] [stdout]     |
[INFO] [stdout]     = note: extern statics are not controlled by the Rust type system: invalid data, aliasing violations or data races will cause undefined behavior
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0133`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ruru`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "53609f0e084349ba6894a7817801a62a3222103cc97e2d1ab7be1c1ae7231010", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "53609f0e084349ba6894a7817801a62a3222103cc97e2d1ab7be1c1ae7231010", kill_on_drop: false }`
[INFO] [stdout] 53609f0e084349ba6894a7817801a62a3222103cc97e2d1ab7be1c1ae7231010