[INFO] updating cached repository https://github.com/eklavya/rustylox
[INFO] running `Command { std: "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", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 637868e1d8be6d5782f3a9b8e16ca24e20d6ee64
[INFO] checking eklavya/rustylox against try#6024cfef3a82f9a7688f07054f1650081bad3af5 for pr-74130
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Feklavya%2Frustylox" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/eklavya/rustylox on toolchain 6024cfef3a82f9a7688f07054f1650081bad3af5
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6024cfef3a82f9a7688f07054f1650081bad3af5" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/eklavya/rustylox
[INFO] finished tweaking git repo https://github.com/eklavya/rustylox
[INFO] tweaked toml for git repo https://github.com/eklavya/rustylox written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/eklavya/rustylox already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6024cfef3a82f9a7688f07054f1650081bad3af5" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+6024cfef3a82f9a7688f07054f1650081bad3af5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 99d2a9e9671743b00ca239441823147ce5d213ffd8650092d9b1b7cf4e71c6ac
[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" "99d2a9e9671743b00ca239441823147ce5d213ffd8650092d9b1b7cf4e71c6ac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "99d2a9e9671743b00ca239441823147ce5d213ffd8650092d9b1b7cf4e71c6ac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "99d2a9e9671743b00ca239441823147ce5d213ffd8650092d9b1b7cf4e71c6ac", kill_on_drop: false }`
[INFO] [stdout] 99d2a9e9671743b00ca239441823147ce5d213ffd8650092d9b1b7cf4e71c6ac
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+6024cfef3a82f9a7688f07054f1650081bad3af5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] b4223db9be36be44fa8a3c63b39fbfbda3f8f65cd214f2dc7ee1e54819a3c647
[INFO] running `Command { std: "docker" "start" "-a" "b4223db9be36be44fa8a3c63b39fbfbda3f8f65cd214f2dc7ee1e54819a3c647", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.14
[INFO] [stderr]    Compiling serde v1.0.110
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.23
[INFO] [stderr]    Compiling quote v1.0.6
[INFO] [stderr]    Compiling toml v0.5.6
[INFO] [stderr]    Compiling derivative v2.1.1
[INFO] [stderr]    Compiling proc-macro-crate v0.1.4
[INFO] [stderr]    Compiling num_enum_derive v0.5.0
[INFO] [stderr]     Checking num_enum v0.5.0
[INFO] [stderr]     Checking rustylox v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused macro definition
[INFO] [stdout]   --> src/vm.rs:39:1
[INFO] [stdout]    |
[INFO] [stdout] 39 | / macro_rules! runtime_error {
[INFO] [stdout] 40 | |     ($self:ident) => {
[INFO] [stdout] 41 | |         eprintln!(fmt_str, args);
[INFO] [stdout] 42 | |         let instruction = self.ip - 1;
[INFO] [stdout] ...  |
[INFO] [stdout] 46 | |     };
[INFO] [stdout] 47 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_macros)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition
[INFO] [stdout]   --> src/vm.rs:39:1
[INFO] [stdout]    |
[INFO] [stdout] 39 | / macro_rules! runtime_error {
[INFO] [stdout] 40 | |     ($self:ident) => {
[INFO] [stdout] 41 | |         eprintln!(fmt_str, args);
[INFO] [stdout] 42 | |         let instruction = self.ip - 1;
[INFO] [stdout] ...  |
[INFO] [stdout] 46 | |     };
[INFO] [stdout] 47 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_macros)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `write_long`
[INFO] [stdout]   --> src/chunk.rs:67:12
[INFO] [stdout]    |
[INFO] [stdout] 67 |     pub fn write_long(&mut self, num: u16, line: i32) -> () {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `free`
[INFO] [stdout]   --> src/chunk.rs:75:12
[INFO] [stdout]    |
[INFO] [stdout] 75 |     pub fn free(&mut self) -> () {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated constant is never used: `PARSE_RULES_DBG`
[INFO] [stdout]    --> src/compiler.rs:256:5
[INFO] [stdout]     |
[INFO] [stdout] 256 | /     const PARSE_RULES_DBG: [&'static str; 44] = [
[INFO] [stdout] 257 | |         "ParseRule {
[INFO] [stdout] 258 | |             prefix: Some(Compiler::grouping),
[INFO] [stdout] 259 | |             infix: None,
[INFO] [stdout] ...   |
[INFO] [stdout] 486 | |             // }, // TOKEN_COLON
[INFO] [stdout] 487 | |     ];
[INFO] [stdout]     | |______^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `show_stack`
[INFO] [stdout]    --> src/vm.rs:127:8
[INFO] [stdout]     |
[INFO] [stdout] 127 |     fn show_stack(&self) {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/main.rs:41:9
[INFO] [stdout]    |
[INFO] [stdout] 41 |         stdout().flush();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/main.rs:43:9
[INFO] [stdout]    |
[INFO] [stdout] 43 |         reader.read_line(&mut input);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: comparison is useless due to type limits
[INFO] [stdout]    --> src/compiler.rs:635:12
[INFO] [stdout]     |
[INFO] [stdout] 635 |         if constant > 255 {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_comparisons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `write_long`
[INFO] [stdout]   --> src/chunk.rs:67:12
[INFO] [stdout]    |
[INFO] [stdout] 67 |     pub fn write_long(&mut self, num: u16, line: i32) -> () {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `free`
[INFO] [stdout]   --> src/chunk.rs:75:12
[INFO] [stdout]    |
[INFO] [stdout] 75 |     pub fn free(&mut self) -> () {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated constant is never used: `PARSE_RULES_DBG`
[INFO] [stdout]    --> src/compiler.rs:256:5
[INFO] [stdout]     |
[INFO] [stdout] 256 | /     const PARSE_RULES_DBG: [&'static str; 44] = [
[INFO] [stdout] 257 | |         "ParseRule {
[INFO] [stdout] 258 | |             prefix: Some(Compiler::grouping),
[INFO] [stdout] 259 | |             infix: None,
[INFO] [stdout] ...   |
[INFO] [stdout] 486 | |             // }, // TOKEN_COLON
[INFO] [stdout] 487 | |     ];
[INFO] [stdout]     | |______^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `show_stack`
[INFO] [stdout]    --> src/vm.rs:127:8
[INFO] [stdout]     |
[INFO] [stdout] 127 |     fn show_stack(&self) {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/main.rs:41:9
[INFO] [stdout]    |
[INFO] [stdout] 41 |         stdout().flush();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/main.rs:43:9
[INFO] [stdout]    |
[INFO] [stdout] 43 |         reader.read_line(&mut input);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: comparison is useless due to type limits
[INFO] [stdout]    --> src/compiler.rs:635:12
[INFO] [stdout]     |
[INFO] [stdout] 635 |         if constant > 255 {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_comparisons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 33.64s
[INFO] running `Command { std: "docker" "inspect" "b4223db9be36be44fa8a3c63b39fbfbda3f8f65cd214f2dc7ee1e54819a3c647", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b4223db9be36be44fa8a3c63b39fbfbda3f8f65cd214f2dc7ee1e54819a3c647", kill_on_drop: false }`
[INFO] [stdout] b4223db9be36be44fa8a3c63b39fbfbda3f8f65cd214f2dc7ee1e54819a3c647