[INFO] updating cached repository https://github.com/rreubenreyes/rs-nand2tetris-assembler
[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] 60c120b3b3f20c138f1d6b64c06ece10e9cc5f9c
[INFO] checking rreubenreyes/rs-nand2tetris-assembler against master#bd0bacc694d7d8175804bb6f690cb846bfa4a9ee for pr-71665
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frreubenreyes%2Frs-nand2tetris-assembler" "/workspace/builds/worker-3/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/rreubenreyes/rs-nand2tetris-assembler on toolchain bd0bacc694d7d8175804bb6f690cb846bfa4a9ee
[INFO] running `"/workspace/cargo-home/bin/cargo" "+bd0bacc694d7d8175804bb6f690cb846bfa4a9ee" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/rreubenreyes/rs-nand2tetris-assembler
[INFO] finished tweaking git repo https://github.com/rreubenreyes/rs-nand2tetris-assembler
[INFO] tweaked toml for git repo https://github.com/rreubenreyes/rs-nand2tetris-assembler written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/rreubenreyes/rs-nand2tetris-assembler already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+bd0bacc694d7d8175804bb6f690cb846bfa4a9ee" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+bd0bacc694d7d8175804bb6f690cb846bfa4a9ee" "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] f77b2989212c263d92a2918fcef1de33c86da17242966bdca3b8d3b0aa94a22a
[INFO] running `"docker" "start" "-a" "f77b2989212c263d92a2918fcef1de33c86da17242966bdca3b8d3b0aa94a22a"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]     Checking rs-assembler v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `state`
[INFO] [stderr]   --> src/state.rs:73:33
[INFO] [stderr]    |
[INFO] [stderr] 73 |     pub fn transition_to(&self, state: State) {}
[INFO] [stderr]    |                                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_state`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Parser`
[INFO] [stderr]  --> src/parser.rs:7:12
[INFO] [stderr]   |
[INFO] [stderr] 7 | pub struct Parser {
[INFO] [stderr]   |            ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Idle`
[INFO] [stderr]  --> src/state.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     Idle,
[INFO] [stderr]   |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Error`
[INFO] [stderr]  --> src/state.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     Error,
[INFO] [stderr]   |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `AcceptToken`
[INFO] [stderr]  --> src/state.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     AcceptToken,
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Tokenize`
[INFO] [stderr]   --> src/state.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 |     Tokenize,
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `state`
[INFO] [stderr]   --> src/state.rs:73:33
[INFO] [stderr]    |
[INFO] [stderr] 73 |     pub fn transition_to(&self, state: State) {}
[INFO] [stderr]    |                                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_state`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `StateMachine`
[INFO] [stderr]   --> src/state.rs:59:12
[INFO] [stderr]    |
[INFO] [stderr] 59 | pub struct StateMachine {
[INFO] [stderr]    |            ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/state.rs:65:5
[INFO] [stderr]    |
[INFO] [stderr] 65 |     pub fn new(initial: State) -> StateMachine {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `add_transition_listener`
[INFO] [stderr]   --> src/state.rs:72:5
[INFO] [stderr]    |
[INFO] [stderr] 72 |     pub fn add_transition_listener(&self) {}
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `transition_to`
[INFO] [stderr]   --> src/state.rs:73:5
[INFO] [stderr]    |
[INFO] [stderr] 73 |     pub fn transition_to(&self, state: State) {}
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 10 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Parser`
[INFO] [stderr]  --> src/parser.rs:7:12
[INFO] [stderr]   |
[INFO] [stderr] 7 | pub struct Parser {
[INFO] [stderr]   |            ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Idle`
[INFO] [stderr]  --> src/state.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     Idle,
[INFO] [stderr]   |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Error`
[INFO] [stderr]  --> src/state.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     Error,
[INFO] [stderr]   |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `AcceptToken`
[INFO] [stderr]  --> src/state.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     AcceptToken,
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Tokenize`
[INFO] [stderr]   --> src/state.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 |     Tokenize,
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `StateMachine`
[INFO] [stderr]   --> src/state.rs:59:12
[INFO] [stderr]    |
[INFO] [stderr] 59 | pub struct StateMachine {
[INFO] [stderr]    |            ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/state.rs:65:5
[INFO] [stderr]    |
[INFO] [stderr] 65 |     pub fn new(initial: State) -> StateMachine {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `add_transition_listener`
[INFO] [stderr]   --> src/state.rs:72:5
[INFO] [stderr]    |
[INFO] [stderr] 72 |     pub fn add_transition_listener(&self) {}
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `transition_to`
[INFO] [stderr]   --> src/state.rs:73:5
[INFO] [stderr]    |
[INFO] [stderr] 73 |     pub fn transition_to(&self, state: State) {}
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 10 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.99s
[INFO] running `"docker" "inspect" "f77b2989212c263d92a2918fcef1de33c86da17242966bdca3b8d3b0aa94a22a"`
[INFO] running `"docker" "rm" "-f" "f77b2989212c263d92a2918fcef1de33c86da17242966bdca3b8d3b0aa94a22a"`
[INFO] [stdout] f77b2989212c263d92a2918fcef1de33c86da17242966bdca3b8d3b0aa94a22a