[INFO] updating cached repository https://github.com/blakemr/learningrust_multiws
[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] d2b9b7b9b4948467c8389060230b4686a85d9c1e
[INFO] testing blakemr/learningrust_multiws against 1.44.0 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fblakemr%2Flearningrust_multiws" "/workspace/builds/worker-5/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/blakemr/learningrust_multiws on toolchain 1.44.0
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/blakemr/learningrust_multiws
[INFO] finished tweaking git repo https://github.com/blakemr/learningrust_multiws
[INFO] tweaked toml for git repo https://github.com/blakemr/learningrust_multiws written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/blakemr/learningrust_multiws already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+1.44.0" "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] ef39fd5e00ec29809261566f9e470617cdd17fa8743e4d8914212dea09e1cdde
[INFO] running `"docker" "start" "-a" "ef39fd5e00ec29809261566f9e470617cdd17fa8743e4d8914212dea09e1cdde"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling hello_server v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0411]: expected trait, found self type `Self`
[INFO] [stderr]   --> src/lib.rs:12:31
[INFO] [stderr]    |
[INFO] [stderr] 12 |     fn call_box(self: Box<dyn Self>);
[INFO] [stderr]    |                               ^^^^ `Self` is only available in impls, traits, and type definitions
[INFO] [stderr] 
[INFO] [stderr] error[E0404]: expected trait, found type parameter `F`
[INFO] [stderr]   --> src/lib.rs:16:31
[INFO] [stderr]    |
[INFO] [stderr] 16 |       fn call_box(self: Box<dyn F>) {
[INFO] [stderr]    |                                 ^ help: a trait with a similar name exists: `Fn`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0404, E0411.
[INFO] [stderr] For more information about an error, try `rustc --explain E0404`.
[INFO] [stderr] error: could not compile `hello_server`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "ef39fd5e00ec29809261566f9e470617cdd17fa8743e4d8914212dea09e1cdde"`
[INFO] running `"docker" "rm" "-f" "ef39fd5e00ec29809261566f9e470617cdd17fa8743e4d8914212dea09e1cdde"`
[INFO] [stdout] ef39fd5e00ec29809261566f9e470617cdd17fa8743e4d8914212dea09e1cdde