[INFO] cloning repository https://github.com/Yuhanun/y-lang
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Yuhanun/y-lang" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FYuhanun%2Fy-lang"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FYuhanun%2Fy-lang'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 5b626cdac5239bec6fd920327ad31bd04cc2bab7
[INFO] checking Yuhanun/y-lang against master#783139bd8fc3b94fac9a1bf81bba2c506e8221b6 for pr-72644
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FYuhanun%2Fy-lang" "/workspace/builds/worker-4/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Yuhanun/y-lang on toolchain 783139bd8fc3b94fac9a1bf81bba2c506e8221b6
[INFO] running `"/workspace/cargo-home/bin/cargo" "+783139bd8fc3b94fac9a1bf81bba2c506e8221b6" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/Yuhanun/y-lang
[INFO] finished tweaking git repo https://github.com/Yuhanun/y-lang
[INFO] tweaked toml for git repo https://github.com/Yuhanun/y-lang written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/Yuhanun/y-lang already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+783139bd8fc3b94fac9a1bf81bba2c506e8221b6" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=forbid" "-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" "+783139bd8fc3b94fac9a1bf81bba2c506e8221b6" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] bfecfa7c2d87543f4af9bc246c274ef4e9de8dba9e17247acc1849b6571e3568
[INFO] running `"docker" "start" "-a" "bfecfa7c2d87543f4af9bc246c274ef4e9de8dba9e17247acc1849b6571e3568"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]     Checking y_lang v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: field is never read: `own_tokens`
[INFO] [stderr]  --> tokenizer/tokens.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 |     own_tokens: &'a [&'a str],
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `delimiters`
[INFO] [stderr]  --> tokenizer/tokens.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 |     delimiters: &'a [&'a str],
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `last_token_end`
[INFO] [stderr]  --> tokenizer/tokens.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     last_token_end: usize,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `own_tokens`
[INFO] [stderr]  --> tokenizer/tokens.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 |     own_tokens: &'a [&'a str],
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `delimiters`
[INFO] [stderr]  --> tokenizer/tokens.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 |     delimiters: &'a [&'a str],
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `last_token_end`
[INFO] [stderr]  --> tokenizer/tokens.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     last_token_end: usize,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.82s
[INFO] running `"docker" "inspect" "bfecfa7c2d87543f4af9bc246c274ef4e9de8dba9e17247acc1849b6571e3568"`
[INFO] running `"docker" "rm" "-f" "bfecfa7c2d87543f4af9bc246c274ef4e9de8dba9e17247acc1849b6571e3568"`
[INFO] [stdout] bfecfa7c2d87543f4af9bc246c274ef4e9de8dba9e17247acc1849b6571e3568