[INFO] cloning repository https://github.com/mutexlox/minesweeper [INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mutexlox/minesweeper" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmutexlox%2Fminesweeper"` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmutexlox%2Fminesweeper'... [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] 0ca1b5c7594dd65918ede2c7c0cd3f153df17344 [INFO] testing mutexlox/minesweeper against beta-2020-06-03 for beta-1.45-1 [INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmutexlox%2Fminesweeper" "/workspace/builds/worker-9/source"` [INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/mutexlox/minesweeper on toolchain beta-2020-06-03 [INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started tweaking git repo https://github.com/mutexlox/minesweeper [INFO] finished tweaking git repo https://github.com/mutexlox/minesweeper [INFO] tweaked toml for git repo https://github.com/mutexlox/minesweeper written to /workspace/builds/worker-9/source/Cargo.toml [INFO] crate git repo https://github.com/mutexlox/minesweeper already has a lockfile, it will not be regenerated [INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "build" "--frozen"` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] dbbe5d05921656e6c3892609d47475c149a8d660294038b2b8869cb827fb74d6 [INFO] running `"docker" "start" "-a" "dbbe5d05921656e6c3892609d47475c149a8d660294038b2b8869cb827fb74d6"` [INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted [INFO] [stderr] Compiling libc v0.2.18 [INFO] [stderr] Compiling ansi_term v0.9.0 [INFO] [stderr] Compiling rand v0.3.15 [INFO] [stderr] Compiling minesweeper_backend v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 2.26s [INFO] running `"docker" "inspect" "dbbe5d05921656e6c3892609d47475c149a8d660294038b2b8869cb827fb74d6"` [INFO] running `"docker" "rm" "-f" "dbbe5d05921656e6c3892609d47475c149a8d660294038b2b8869cb827fb74d6"` [INFO] [stdout] dbbe5d05921656e6c3892609d47475c149a8d660294038b2b8869cb827fb74d6 [INFO] running `"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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "test" "--frozen" "--no-run"` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] f1e6ce38f4eddb584d3ada0412b5cada6253957b5a35b81237e4f59e86e19aeb [INFO] running `"docker" "start" "-a" "f1e6ce38f4eddb584d3ada0412b5cada6253957b5a35b81237e4f59e86e19aeb"` [INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted [INFO] [stderr] Compiling minesweeper_backend v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] error[E0432]: unresolved import `backend` [INFO] [stderr] --> src/lib.rs:7:11 [INFO] [stderr] | [INFO] [stderr] 7 | use ::backend::Game; [INFO] [stderr] | ^^^^^^^ help: a similar path exists: `crate::backend` [INFO] [stderr] | [INFO] [stderr] = note: `use` statements changed in Rust 2018; read more at [INFO] [stderr] [INFO] [stderr] error[E0432]: unresolved import `board_iter` [INFO] [stderr] --> src/lib.rs:8:11 [INFO] [stderr] | [INFO] [stderr] 8 | use ::board_iter::board_iter; [INFO] [stderr] | ^^^^^^^^^^ help: a similar path exists: `crate::board_iter` [INFO] [stderr] | [INFO] [stderr] = note: `use` statements changed in Rust 2018; read more at [INFO] [stderr] [INFO] [stderr] error: aborting due to 2 previous errors [INFO] [stderr] [INFO] [stderr] For more information about this error, try `rustc --explain E0432`. [INFO] [stderr] error: could not compile `minesweeper_backend`. [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 `"docker" "inspect" "f1e6ce38f4eddb584d3ada0412b5cada6253957b5a35b81237e4f59e86e19aeb"` [INFO] running `"docker" "rm" "-f" "f1e6ce38f4eddb584d3ada0412b5cada6253957b5a35b81237e4f59e86e19aeb"` [INFO] [stdout] f1e6ce38f4eddb584d3ada0412b5cada6253957b5a35b81237e4f59e86e19aeb