[INFO] updating cached repository https://github.com/lonnng/lua-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] [stderr] From https://github.com/lonnng/lua-rs
[INFO] [stderr]    1dfd5b7..cc46902  master     -> master
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] cc46902ab63e6c37a6040ec054cd7c92a08652be
[INFO] testing lonnng/lua-rs against beta-2020-06-03 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flonnng%2Flua-rs" "/workspace/builds/worker-2/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/lonnng/lua-rs 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/lonnng/lua-rs
[INFO] finished tweaking git repo https://github.com/lonnng/lua-rs
[INFO] tweaked toml for git repo https://github.com/lonnng/lua-rs written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/lonnng/lua-rs 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-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" "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] [stdout] bd977f609dbc380b16bd11989eab736c48b43caea343b128099ddab9b85b7f4f
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "bd977f609dbc380b16bd11989eab736c48b43caea343b128099ddab9b85b7f4f"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling bytes v0.5.4
[INFO] [stderr]    Compiling lua v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0277]: the trait bound `u8: bytes::Buf` is not satisfied
[INFO] [stderr]    --> src/scanner.rs:257:25
[INFO] [stderr]     |
[INFO] [stderr] 257 |         self.buffer.put(c as u8)
[INFO] [stderr]     |                         ^^^^^^^ the trait `bytes::Buf` is not implemented for `u8`
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable expression
[INFO] [stderr]    --> src/scanner.rs:352:9
[INFO] [stderr]     |
[INFO] [stderr] 314 | /         loop {
[INFO] [stderr] 315 | |             match self.current {
[INFO] [stderr] 316 | |                 EOF => {
[INFO] [stderr] 317 | |                     if is_comment {
[INFO] [stderr] ...   |
[INFO] [stderr] 350 | |             }
[INFO] [stderr] 351 | |         }
[INFO] [stderr]     | |_________- any code following this expression is unreachable
[INFO] [stderr] 352 |           unreachable!()
[INFO] [stderr]     |           ^^^^^^^^^^^^^^ unreachable expression
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error; 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0277`.
[INFO] [stderr] error: could not compile `lua`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "bd977f609dbc380b16bd11989eab736c48b43caea343b128099ddab9b85b7f4f"`
[INFO] running `"docker" "rm" "-f" "bd977f609dbc380b16bd11989eab736c48b43caea343b128099ddab9b85b7f4f"`
[INFO] [stdout] bd977f609dbc380b16bd11989eab736c48b43caea343b128099ddab9b85b7f4f