[INFO] updating cached repository https://github.com/hayapo/Rust
[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] 8ad9324dfd81b69999f7efda8f3cff8c964827da
[INFO] testing hayapo/Rust against beta-2020-06-03 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhayapo%2FRust" "/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/hayapo/Rust 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/hayapo/Rust
[INFO] finished tweaking git repo https://github.com/hayapo/Rust
[INFO] tweaked toml for git repo https://github.com/hayapo/Rust written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/hayapo/Rust 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-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" "+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] a517d0871e28f077621ae2192430dd787645c2a942062211420e638e8e5442b6
[INFO] running `"docker" "start" "-a" "a517d0871e28f077621ae2192430dd787645c2a942062211420e638e8e5442b6"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling rand v0.3.23
[INFO] [stderr]    Compiling Rust_Learning v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0601]: `main` function not found in crate `match`
[INFO] [stderr]   --> src/bin/match.rs:1:1
[INFO] [stderr]    |
[INFO] [stderr] 1  | / enum Coin {
[INFO] [stderr] 2  | |     Penny,
[INFO] [stderr] 3  | |     Nickel,
[INFO] [stderr] 4  | |     Dime,
[INFO] [stderr] ...  |
[INFO] [stderr] 17 | |     }
[INFO] [stderr] 18 | | }
[INFO] [stderr]    | |_^ consider adding a `main` function to `src/bin/match.rs`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0601`.
[INFO] [stderr] error: could not compile `Rust_Learning`.
[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] warning: unused variable: `word`
[INFO] [stderr]  --> src/bin/slice.rs:3:9
[INFO] [stderr]   |
[INFO] [stderr] 3 |     let word = first_word(&my_string[..]);
[INFO] [stderr]   |         ^^^^ help: if this is intentional, prefix it with an underscore: `_word`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `word`
[INFO] [stderr]  --> src/bin/slice.rs:6:9
[INFO] [stderr]   |
[INFO] [stderr] 6 |     let word = first_word(&my_string_literal[..]);
[INFO] [stderr]   |         ^^^^ help: if this is intentional, prefix it with an underscore: `_word`
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "a517d0871e28f077621ae2192430dd787645c2a942062211420e638e8e5442b6"`
[INFO] running `"docker" "rm" "-f" "a517d0871e28f077621ae2192430dd787645c2a942062211420e638e8e5442b6"`
[INFO] [stdout] a517d0871e28f077621ae2192430dd787645c2a942062211420e638e8e5442b6