[INFO] updating cached repository https://github.com/syunta/Scheme-rs
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] e7028d38a4a6210d18b2643971953d2e744ba596
[INFO] checking syunta/Scheme-rs against nightly-2019-10-27 for pr-65897
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsyunta%2FScheme-rs" "/workspace/builds/worker-3/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/syunta/Scheme-rs on toolchain nightly-2019-10-27
[INFO] running `"/workspace/cargo-home/bin/cargo" "+nightly-2019-10-27" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/syunta/Scheme-rs
[INFO] finished tweaking git repo https://github.com/syunta/Scheme-rs
[INFO] tweaked toml for git repo https://github.com/syunta/Scheme-rs written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/syunta/Scheme-rs already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+nightly-2019-10-27" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=allow" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+nightly-2019-10-27" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] d19ad39ec884e73ed1cd5b345cb0419d8fa21c14188c013e5cfc03eb2a914902
[INFO] running `"docker" "start" "-a" "d19ad39ec884e73ed1cd5b345cb0419d8fa21c14188c013e5cfc03eb2a914902"`
[INFO] [stderr]     Checking scheme-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0133]: use of mutable static is unsafe and requires unsafe function or block
[INFO] [stderr]   --> src/memory.rs:19:38
[INFO] [stderr]    |
[INFO] [stderr] 19 |         mem.borrow_mut().cars.insert(FREE_PTR, car);
[INFO] [stderr]    |                                      ^^^^^^^^ use of mutable static
[INFO] [stderr]    |
[INFO] [stderr]    = note: mutable statics can be mutated by multiple threads: aliasing violations or data races will cause undefined behavior
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0133`.
[INFO] [stderr] error: could not compile `scheme-rs`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error[E0133]: use of mutable static is unsafe and requires unsafe function or block
[INFO] [stderr]   --> src/memory.rs:19:38
[INFO] [stderr]    |
[INFO] [stderr] 19 |         mem.borrow_mut().cars.insert(FREE_PTR, car);
[INFO] [stderr]    |                                      ^^^^^^^^ use of mutable static
[INFO] [stderr]    |
[INFO] [stderr]    = note: mutable statics can be mutated by multiple threads: aliasing violations or data races will cause undefined behavior
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0133`.
[INFO] [stderr] error: could not compile `scheme-rs`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "d19ad39ec884e73ed1cd5b345cb0419d8fa21c14188c013e5cfc03eb2a914902"`
[INFO] running `"docker" "rm" "-f" "d19ad39ec884e73ed1cd5b345cb0419d8fa21c14188c013e5cfc03eb2a914902"`
[INFO] [stdout] d19ad39ec884e73ed1cd5b345cb0419d8fa21c14188c013e5cfc03eb2a914902