[INFO] cloning repository https://github.com/rreubenreyes/rs-nand2tetris-assembler
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rreubenreyes/rs-nand2tetris-assembler" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frreubenreyes%2Frs-nand2tetris-assembler", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frreubenreyes%2Frs-nand2tetris-assembler'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 60c120b3b3f20c138f1d6b64c06ece10e9cc5f9c
[INFO] checking rreubenreyes/rs-nand2tetris-assembler against try#3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f for pr-87248
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frreubenreyes%2Frs-nand2tetris-assembler" "/workspace/builds/worker-11/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-11/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/rreubenreyes/rs-nand2tetris-assembler on toolchain 3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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-11/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 `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a8c746b8b92722fddb371581f5b508c6b09a14f64ce26dc51483276f4541d34b
[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" "a8c746b8b92722fddb371581f5b508c6b09a14f64ce26dc51483276f4541d34b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a8c746b8b92722fddb371581f5b508c6b09a14f64ce26dc51483276f4541d34b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a8c746b8b92722fddb371581f5b508c6b09a14f64ce26dc51483276f4541d34b", kill_on_drop: false }`
[INFO] [stdout] a8c746b8b92722fddb371581f5b508c6b09a14f64ce26dc51483276f4541d34b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 23d22de691e307c16dfc54e6dec9c72302d6440c8c13cb740340d316d198f73d
[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" "23d22de691e307c16dfc54e6dec9c72302d6440c8c13cb740340d316d198f73d", kill_on_drop: false }`
[INFO] [stderr]     Checking rs-assembler v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `state`
[INFO] [stdout]   --> src/state.rs:73:33
[INFO] [stdout]    |
[INFO] [stdout] 73 |     pub fn transition_to(&self, state: State) {}
[INFO] [stdout]    |                                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_state`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Parser`
[INFO] [stdout]  --> src/parser.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct Parser {
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Idle`
[INFO] [stdout]  --> src/state.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     Idle,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Error`
[INFO] [stdout]  --> src/state.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     Error,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `AcceptToken`
[INFO] [stdout]  --> src/state.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     AcceptToken,
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Tokenize`
[INFO] [stdout]   --> src/state.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     Tokenize,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `StateMachine`
[INFO] [stdout]   --> src/state.rs:59:12
[INFO] [stdout]    |
[INFO] [stdout] 59 | pub struct StateMachine {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/state.rs:65:12
[INFO] [stdout]    |
[INFO] [stdout] 65 |     pub fn new(initial: State) -> StateMachine {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `add_transition_listener`
[INFO] [stdout]   --> src/state.rs:72:12
[INFO] [stdout]    |
[INFO] [stdout] 72 |     pub fn add_transition_listener(&self) {}
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `transition_to`
[INFO] [stdout]   --> src/state.rs:73:12
[INFO] [stdout]    |
[INFO] [stdout] 73 |     pub fn transition_to(&self, state: State) {}
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `state`
[INFO] [stdout]   --> src/state.rs:73:33
[INFO] [stdout]    |
[INFO] [stdout] 73 |     pub fn transition_to(&self, state: State) {}
[INFO] [stdout]    |                                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_state`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Parser`
[INFO] [stdout]  --> src/parser.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct Parser {
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Idle`
[INFO] [stdout]  --> src/state.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     Idle,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Error`
[INFO] [stdout]  --> src/state.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     Error,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `AcceptToken`
[INFO] [stdout]  --> src/state.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     AcceptToken,
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Tokenize`
[INFO] [stdout]   --> src/state.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     Tokenize,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `StateMachine`
[INFO] [stdout]   --> src/state.rs:59:12
[INFO] [stdout]    |
[INFO] [stdout] 59 | pub struct StateMachine {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/state.rs:65:12
[INFO] [stdout]    |
[INFO] [stdout] 65 |     pub fn new(initial: State) -> StateMachine {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `add_transition_listener`
[INFO] [stdout]   --> src/state.rs:72:12
[INFO] [stdout]    |
[INFO] [stdout] 72 |     pub fn add_transition_listener(&self) {}
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `transition_to`
[INFO] [stdout]   --> src/state.rs:73:12
[INFO] [stdout]    |
[INFO] [stdout] 73 |     pub fn transition_to(&self, state: State) {}
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.49s
[INFO] running `Command { std: "docker" "inspect" "23d22de691e307c16dfc54e6dec9c72302d6440c8c13cb740340d316d198f73d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "23d22de691e307c16dfc54e6dec9c72302d6440c8c13cb740340d316d198f73d", kill_on_drop: false }`
[INFO] [stdout] 23d22de691e307c16dfc54e6dec9c72302d6440c8c13cb740340d316d198f73d