[INFO] cloning repository https://github.com/WiredSound/tilang
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/WiredSound/tilang" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FWiredSound%2Ftilang"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FWiredSound%2Ftilang'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] ad00559f42defc9986999b3a1665c87dbf909475
[INFO] checking WiredSound/tilang against try#8a749131e7beb72f6edacefd2bdcbed3d67b2112 for pr-72331
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FWiredSound%2Ftilang" "/workspace/builds/worker-8/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/WiredSound/tilang on toolchain 8a749131e7beb72f6edacefd2bdcbed3d67b2112
[INFO] running `"/workspace/cargo-home/bin/cargo" "+8a749131e7beb72f6edacefd2bdcbed3d67b2112" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/WiredSound/tilang
[INFO] finished tweaking git repo https://github.com/WiredSound/tilang
[INFO] tweaked toml for git repo https://github.com/WiredSound/tilang written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/WiredSound/tilang already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+8a749131e7beb72f6edacefd2bdcbed3d67b2112" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded char_stream v0.1.8
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+8a749131e7beb72f6edacefd2bdcbed3d67b2112" "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] 53a5983c51cead8d8120c7373c2adf26de0425dcf4af6a93079f252053632579
[INFO] running `"docker" "start" "-a" "53a5983c51cead8d8120c7373c2adf26de0425dcf4af6a93079f252053632579"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling libc v0.2.70
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]     Checking regex-syntax v0.6.17
[INFO] [stderr]     Checking termcolor v1.1.0
[INFO] [stderr]     Checking char_stream v0.1.8
[INFO] [stderr]     Checking humantime v1.3.0
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking aho-corasick v0.7.10
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking regex v1.3.7
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking pretty_env_logger v0.4.0
[INFO] [stderr]     Checking tilang v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `syntax_tree`
[INFO] [stderr]   --> src/main.rs:81:9
[INFO] [stderr]    |
[INFO] [stderr] 81 |     let syntax_tree = parsing::input(tokens);
[INFO] [stderr]    |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_syntax_tree`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `Expr`
[INFO] [stderr]  --> src/parsing/ast.rs:5:10
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub enum Expr {
[INFO] [stderr]   |          ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `syntax_tree`
[INFO] [stderr]   --> src/main.rs:81:9
[INFO] [stderr]    |
[INFO] [stderr] 81 |     let syntax_tree = parsing::input(tokens);
[INFO] [stderr]    |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_syntax_tree`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `lex_iterator`
[INFO] [stderr]   --> src/parsing/mod.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     lex_iterator: lexing::TillLexIterator<'a>
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `Expr`
[INFO] [stderr]  --> src/parsing/ast.rs:5:10
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub enum Expr {
[INFO] [stderr]   |          ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `lex_iterator`
[INFO] [stderr]   --> src/parsing/mod.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     lex_iterator: lexing::TillLexIterator<'a>
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.30s
[INFO] running `"docker" "inspect" "53a5983c51cead8d8120c7373c2adf26de0425dcf4af6a93079f252053632579"`
[INFO] running `"docker" "rm" "-f" "53a5983c51cead8d8120c7373c2adf26de0425dcf4af6a93079f252053632579"`
[INFO] [stdout] 53a5983c51cead8d8120c7373c2adf26de0425dcf4af6a93079f252053632579