[INFO] updating cached repository https://github.com/LooMaclin/repro_rust_plugin_bug_create_module
[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] 4f7b8fab9f81abebf0d54fbd6f60a3d592fbfc37
[INFO] testing LooMaclin/repro_rust_plugin_bug_create_module against beta-2020-06-03 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLooMaclin%2Frepro_rust_plugin_bug_create_module" "/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/LooMaclin/repro_rust_plugin_bug_create_module 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/LooMaclin/repro_rust_plugin_bug_create_module
[INFO] finished tweaking git repo https://github.com/LooMaclin/repro_rust_plugin_bug_create_module
[INFO] tweaked toml for git repo https://github.com/LooMaclin/repro_rust_plugin_bug_create_module written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/LooMaclin/repro_rust_plugin_bug_create_module 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] c4f90dfc238fee2d4d7d0437dda29e9e276c25c91fbb08868e262c3f0b90e510
[INFO] running `"docker" "start" "-a" "c4f90dfc238fee2d4d7d0437dda29e9e276c25c91fbb08868e262c3f0b90e510"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling repro_rust_plugin_bug v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0583]: file not found for module `b`
[INFO] [stderr]  --> src/a.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | mod b; // alt+enter on `b`, select `create module file`. result: nothing happens
[INFO] [stderr]   | ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = help: to create the module `b`, create file "src/a/b.rs"
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0583`.
[INFO] [stderr] error: could not compile `repro_rust_plugin_bug`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "c4f90dfc238fee2d4d7d0437dda29e9e276c25c91fbb08868e262c3f0b90e510"`
[INFO] running `"docker" "rm" "-f" "c4f90dfc238fee2d4d7d0437dda29e9e276c25c91fbb08868e262c3f0b90e510"`
[INFO] [stdout] c4f90dfc238fee2d4d7d0437dda29e9e276c25c91fbb08868e262c3f0b90e510