[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#b2f80f6008cdafc35b4472bd46afa16cc6b0cd63 for pr-79470
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frreubenreyes%2Frs-nand2tetris-assembler" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/rreubenreyes/rs-nand2tetris-assembler on toolchain b2f80f6008cdafc35b4472bd46afa16cc6b0cd63
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "read-manifest" "--manifest-path" "Cargo.toml", 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-4/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" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "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" "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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0a93ad8d02f65cf1ad7031c8c9caa0bb55690a1be65bf9c29db55fb2883c82c5
[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" "0a93ad8d02f65cf1ad7031c8c9caa0bb55690a1be65bf9c29db55fb2883c82c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0a93ad8d02f65cf1ad7031c8c9caa0bb55690a1be65bf9c29db55fb2883c82c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0a93ad8d02f65cf1ad7031c8c9caa0bb55690a1be65bf9c29db55fb2883c82c5", kill_on_drop: false }`
[INFO] [stdout] 0a93ad8d02f65cf1ad7031c8c9caa0bb55690a1be65bf9c29db55fb2883c82c5
[INFO] running `Command { std: "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" "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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b17b8f244c02ad3efad536b9d1e4a4bbd2d6e66b06568c477d8a5c223f90c7c2
[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" "b17b8f244c02ad3efad536b9d1e4a4bbd2d6e66b06568c477d8a5c223f90c7c2", 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 0.67s
[INFO] running `Command { std: "docker" "inspect" "b17b8f244c02ad3efad536b9d1e4a4bbd2d6e66b06568c477d8a5c223f90c7c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b17b8f244c02ad3efad536b9d1e4a4bbd2d6e66b06568c477d8a5c223f90c7c2", kill_on_drop: false }`
[INFO] [stdout] b17b8f244c02ad3efad536b9d1e4a4bbd2d6e66b06568c477d8a5c223f90c7c2