[INFO] cloning repository https://github.com/Yuhanun/y-lang
[INFO] running `Command { std: "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", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FYuhanun%2Fy-lang'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 99bd0dce081371d2e7d30ffab31244797096c4af
[INFO] checking Yuhanun/y-lang against master#f5f33ec0e0455eefa72fc5567eb1280a4d5ee206 for pr-83312
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FYuhanun%2Fy-lang" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Yuhanun/y-lang on toolchain f5f33ec0e0455eefa72fc5567eb1280a4d5ee206
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f5f33ec0e0455eefa72fc5567eb1280a4d5ee206" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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-1/source/Cargo.toml
[INFO] crate git repo https://github.com/Yuhanun/y-lang already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f5f33ec0e0455eefa72fc5567eb1280a4d5ee206" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+f5f33ec0e0455eefa72fc5567eb1280a4d5ee206" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 39f0c15ec26335aedf1c9fc197838b7940450be8c3c98511ce3c9ea43775e665
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "39f0c15ec26335aedf1c9fc197838b7940450be8c3c98511ce3c9ea43775e665", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "39f0c15ec26335aedf1c9fc197838b7940450be8c3c98511ce3c9ea43775e665", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "39f0c15ec26335aedf1c9fc197838b7940450be8c3c98511ce3c9ea43775e665", kill_on_drop: false }`
[INFO] [stdout] 39f0c15ec26335aedf1c9fc197838b7940450be8c3c98511ce3c9ea43775e665
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "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" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+f5f33ec0e0455eefa72fc5567eb1280a4d5ee206" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f1da12b5c5e752ce4c3b0bfd55a4b95b14e4d969fea57f1f2ca01d067e2ad03b
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "f1da12b5c5e752ce4c3b0bfd55a4b95b14e4d969fea57f1f2ca01d067e2ad03b", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling libc v0.2.76
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]     Checking tokenizer v0.1.0 (/opt/rustwide/workdir/tokenizer)
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling memoffset v0.5.5
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling rayon v1.4.0
[INFO] [stderr]     Checking crossbeam-channel v0.4.3
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking crossbeam-deque v0.7.3
[INFO] [stderr]     Checking rayon-core v1.8.0
[INFO] [stderr]     Checking lexifier v0.1.0 (/opt/rustwide/workdir/lexifier)
[INFO] [stderr]     Checking preparser v0.1.0 (/opt/rustwide/workdir/preparser)
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> preparser/src/preparser.rs:76:13
[INFO] [stdout]    |
[INFO] [stdout] 76 |             _ => PreParserSymbols::Unknown,
[INFO] [stdout]    |             ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> preparser/src/preparser.rs:76:13
[INFO] [stdout]    |
[INFO] [stdout] 76 |             _ => PreParserSymbols::Unknown,
[INFO] [stdout]    |             ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking parser v0.1.0 (/opt/rustwide/workdir/parser)
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `data`
[INFO] [stdout]  --> parser/src/parser.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     data: Vec<PreParserSymbols>,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `data`
[INFO] [stdout]  --> parser/src/parser.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     data: Vec<PreParserSymbols>,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking ylangc v0.1.0 (/opt/rustwide/workdir/ylangc)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 14.22s
[INFO] running `Command { std: "docker" "inspect" "f1da12b5c5e752ce4c3b0bfd55a4b95b14e4d969fea57f1f2ca01d067e2ad03b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f1da12b5c5e752ce4c3b0bfd55a4b95b14e4d969fea57f1f2ca01d067e2ad03b", kill_on_drop: false }`
[INFO] [stdout] f1da12b5c5e752ce4c3b0bfd55a4b95b14e4d969fea57f1f2ca01d067e2ad03b