[INFO] cloning repository https://github.com/SirWindfield/showcase-once_cell-sync [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/SirWindfield/showcase-once_cell-sync" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSirWindfield%2Fshowcase-once_cell-sync", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSirWindfield%2Fshowcase-once_cell-sync'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 33b5f75bc12867882c92f4fc24491a158e8f50ee [INFO] documenting SirWindfield/showcase-once_cell-sync against 1.46.0 for beta-1.47-rustdoc-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSirWindfield%2Fshowcase-once_cell-sync" "/workspace/builds/worker-2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/SirWindfield/showcase-once_cell-sync on toolchain 1.46.0 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/SirWindfield/showcase-once_cell-sync [INFO] finished tweaking git repo https://github.com/SirWindfield/showcase-once_cell-sync [INFO] tweaked toml for git repo https://github.com/SirWindfield/showcase-once_cell-sync written to /workspace/builds/worker-2/source/Cargo.toml [INFO] crate git repo https://github.com/SirWindfield/showcase-once_cell-sync already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+1.46.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 06c5789beccc0a15611f50981b891987c0b55050b890567c684cffbf5601a057 [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" "06c5789beccc0a15611f50981b891987c0b55050b890567c684cffbf5601a057", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "06c5789beccc0a15611f50981b891987c0b55050b890567c684cffbf5601a057", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "06c5789beccc0a15611f50981b891987c0b55050b890567c684cffbf5601a057", kill_on_drop: false }` [INFO] [stdout] 06c5789beccc0a15611f50981b891987c0b55050b890567c684cffbf5601a057 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "RUSTDOCFLAGS=--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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.46.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 92326cd58cb2e51580843154dcc8258afa9da469592a8b660b12ab814cb9e66f [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" "92326cd58cb2e51580843154dcc8258afa9da469592a8b660b12ab814cb9e66f", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.73 [INFO] [stderr] Compiling jobserver v0.1.21 [INFO] [stderr] Compiling cc v1.0.58 [INFO] [stderr] Compiling openssl-sys v0.9.58 [INFO] [stderr] Compiling libz-sys v1.0.25 [INFO] [stderr] Compiling libssh2-sys v0.2.18 [INFO] [stderr] Compiling libgit2-sys v0.12.9+1.0.1 [INFO] [stderr] Checking git2 v0.13.8 [INFO] [stderr] Documenting tmp v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] error[E0277]: `std::cell::UnsafeCell>` cannot be shared between threads safely [INFO] [stdout] --> src/main.rs:7:5 [INFO] [stdout] | [INFO] [stdout] 7 | static REPO: OnceCell = OnceCell::new(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `std::cell::UnsafeCell>` cannot be shared between threads safely [INFO] [stdout] | [INFO] [stdout] = help: within `once_cell::unsync::OnceCell`, the trait `std::marker::Sync` is not implemented for `std::cell::UnsafeCell>` [INFO] [stdout] = note: required because it appears within the type `once_cell::unsync::OnceCell` [INFO] [stdout] = note: shared static variables must have a type that implements `Sync` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to previous error [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0277`. [INFO] [stdout] [INFO] [stderr] error: Could not document `tmp`. [INFO] [stderr] [INFO] [stderr] Caused by: [INFO] [stderr] process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name tmp src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern git2=/opt/rustwide/target/debug/deps/libgit2-a2713ddf17fa1b9d.rmeta --extern once_cell=/opt/rustwide/target/debug/deps/libonce_cell-67de5f6a6498d9d2.rmeta --cap-lints=warn` (exit code: 1) [INFO] running `Command { std: "docker" "inspect" "92326cd58cb2e51580843154dcc8258afa9da469592a8b660b12ab814cb9e66f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "92326cd58cb2e51580843154dcc8258afa9da469592a8b660b12ab814cb9e66f", kill_on_drop: false }` [INFO] [stdout] 92326cd58cb2e51580843154dcc8258afa9da469592a8b660b12ab814cb9e66f