[INFO] cloning repository https://github.com/cesarFuhr/jlox
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cesarFuhr/jlox" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FcesarFuhr%2Fjlox", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FcesarFuhr%2Fjlox'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 09cb4c8f51d32f15903694c1eccd883dab20bde3
[INFO] checking cesarFuhr/jlox against try#8d46be77cd48fdbcced888d027457e2c9cf2aa16 for pr-142723
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FcesarFuhr%2Fjlox" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/cesarFuhr/jlox on toolchain 8d46be77cd48fdbcced888d027457e2c9cf2aa16
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8d46be77cd48fdbcced888d027457e2c9cf2aa16" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/cesarFuhr/jlox
[INFO] finished tweaking git repo https://github.com/cesarFuhr/jlox
[INFO] tweaked toml for git repo https://github.com/cesarFuhr/jlox written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/cesarFuhr/jlox already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8d46be77cd48fdbcced888d027457e2c9cf2aa16" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8d46be77cd48fdbcced888d027457e2c9cf2aa16" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3175d63eb48750157c6b44e2f06383a6eaae4d8e402667b26370a8f0045093b7
[INFO] running `Command { std: "docker" "start" "-a" "3175d63eb48750157c6b44e2f06383a6eaae4d8e402667b26370a8f0045093b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3175d63eb48750157c6b44e2f06383a6eaae4d8e402667b26370a8f0045093b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3175d63eb48750157c6b44e2f06383a6eaae4d8e402667b26370a8f0045093b7", kill_on_drop: false }`
[INFO] [stdout] 3175d63eb48750157c6b44e2f06383a6eaae4d8e402667b26370a8f0045093b7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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" "RUSTDOCFLAGS=--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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8d46be77cd48fdbcced888d027457e2c9cf2aa16" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8c4d9c791856adc995cd80eb992ed1da2fb5dfdc25597190572cbe37da67162b
[INFO] running `Command { std: "docker" "start" "-a" "8c4d9c791856adc995cd80eb992ed1da2fb5dfdc25597190572cbe37da67162b", kill_on_drop: false }`
[INFO] [stderr]     Checking jlox v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `run_file` is never used
[INFO] [stdout]   --> src/main.rs:14:4
[INFO] [stdout]    |
[INFO] [stdout] 14 | fn run_file(file_path: String) {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `token` and `message` are never read
[INFO] [stdout]   --> src/tree_walker/parser.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub struct ParseError {
[INFO] [stdout]    |            ---------- fields in this struct
[INFO] [stdout] 13 |     pub token: Token,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout] 14 |     pub message: String,
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ParseError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `synchronize` is never used
[INFO] [stdout]    --> src/tree_walker/parser.rs:171:8
[INFO] [stdout]     |
[INFO] [stdout] 17  | impl Parser {
[INFO] [stdout]     | ----------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 171 |     fn synchronize(&mut self) -> Result<(), ParseError> {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `ast_print` is never used
[INFO] [stdout]   --> src/tree_walker/syntax_tree.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub fn ast_print(expr: Expr) -> String {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `PrettyPrint` is never used
[INFO] [stdout]   --> src/tree_walker/syntax_tree.rs:19:11
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub trait PrettyPrint {
[INFO] [stdout]    |           ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run_file` is never used
[INFO] [stdout]   --> src/main.rs:14:4
[INFO] [stdout]    |
[INFO] [stdout] 14 | fn run_file(file_path: String) {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `token` and `message` are never read
[INFO] [stdout]   --> src/tree_walker/parser.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub struct ParseError {
[INFO] [stdout]    |            ---------- fields in this struct
[INFO] [stdout] 13 |     pub token: Token,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout] 14 |     pub message: String,
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ParseError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `synchronize` is never used
[INFO] [stdout]    --> src/tree_walker/parser.rs:171:8
[INFO] [stdout]     |
[INFO] [stdout] 17  | impl Parser {
[INFO] [stdout]     | ----------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 171 |     fn synchronize(&mut self) -> Result<(), ParseError> {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `ast_print` is never used
[INFO] [stdout]   --> src/tree_walker/syntax_tree.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub fn ast_print(expr: Expr) -> String {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `PrettyPrint` is never used
[INFO] [stdout]   --> src/tree_walker/syntax_tree.rs:19:11
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub trait PrettyPrint {
[INFO] [stdout]    |           ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.17s
[INFO] running `Command { std: "docker" "inspect" "8c4d9c791856adc995cd80eb992ed1da2fb5dfdc25597190572cbe37da67162b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8c4d9c791856adc995cd80eb992ed1da2fb5dfdc25597190572cbe37da67162b", kill_on_drop: false }`
[INFO] [stdout] 8c4d9c791856adc995cd80eb992ed1da2fb5dfdc25597190572cbe37da67162b