[INFO] cloning repository https://github.com/awj/jlox_tree
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/awj/jlox_tree" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fawj%2Fjlox_tree", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fawj%2Fjlox_tree'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a4495246f0864386d07b5e28c4abce87ceb13945
[INFO] checking awj/jlox_tree against try#a3dffdb3a32d0dedc198f9de7d43173f3eb6727b for pr-136303
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fawj%2Fjlox_tree" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/awj/jlox_tree on toolchain a3dffdb3a32d0dedc198f9de7d43173f3eb6727b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a3dffdb3a32d0dedc198f9de7d43173f3eb6727b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/awj/jlox_tree
[INFO] finished tweaking git repo https://github.com/awj/jlox_tree
[INFO] tweaked toml for git repo https://github.com/awj/jlox_tree written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/awj/jlox_tree 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" "+a3dffdb3a32d0dedc198f9de7d43173f3eb6727b" "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-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:c80049f3b88b82089a44e0f06d0d6029d44b96b7257e55a1cd63dbc9f4c33334" "/opt/rustwide/cargo-home/bin/cargo" "+a3dffdb3a32d0dedc198f9de7d43173f3eb6727b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9b76f456e12b89fe401f9a7b9921a555914b2826b574e639a1be9c009b5b7cc3
[INFO] running `Command { std: "docker" "start" "-a" "9b76f456e12b89fe401f9a7b9921a555914b2826b574e639a1be9c009b5b7cc3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9b76f456e12b89fe401f9a7b9921a555914b2826b574e639a1be9c009b5b7cc3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9b76f456e12b89fe401f9a7b9921a555914b2826b574e639a1be9c009b5b7cc3", kill_on_drop: false }`
[INFO] [stdout] 9b76f456e12b89fe401f9a7b9921a555914b2826b574e639a1be9c009b5b7cc3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:c80049f3b88b82089a44e0f06d0d6029d44b96b7257e55a1cd63dbc9f4c33334" "/opt/rustwide/cargo-home/bin/cargo" "+a3dffdb3a32d0dedc198f9de7d43173f3eb6727b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9f17765c90d7b98ebf1f0767c4ca11a365336a76511ce227c2bfd17553c5b45e
[INFO] running `Command { std: "docker" "start" "-a" "9f17765c90d7b98ebf1f0767c4ca11a365336a76511ce227c2bfd17553c5b45e", kill_on_drop: false }`
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking jlox_tree v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crate::grammar::Visitor`
[INFO] [stdout]   --> src/main.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | use crate::grammar::Visitor;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::grammar::Visitor`
[INFO] [stdout]   --> src/main.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | use crate::grammar::Visitor;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `line` is never read
[INFO] [stdout]   --> src/token.rs:93:7
[INFO] [stdout]    |
[INFO] [stdout] 89 | pub struct Token {
[INFO] [stdout]    |            ----- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 93 |   pub line: usize
[INFO] [stdout]    |       ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Token` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `has_errors` and `nonliteral_token` are never used
[INFO] [stdout]   --> src/scanner.rs:38:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | impl Scanner {
[INFO] [stdout]    | ------------ methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 38 |     fn has_errors(&self) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 42 |     fn nonliteral_token(&mut self, token_type: TokenType) -> Token {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Binary`, `Grouping`, `Literal`, and `Unary` are never constructed
[INFO] [stdout]   --> src/grammar.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub enum Expr<'a> {
[INFO] [stdout]    |          ---- variants in this enum
[INFO] [stdout] 29 |     Binary { left: &'a Expr<'a>, operator: token::Token, right: &'a Expr<'a> },
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 30 |     Grouping { expression: &'a Expr<'a> },
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 31 |     Literal { value: &'a token::Literal },
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 32 |     Unary { operator: &'a token::Token, right: &'a Expr<'a> }
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `line` is never read
[INFO] [stdout]   --> src/token.rs:93:7
[INFO] [stdout]    |
[INFO] [stdout] 89 | pub struct Token {
[INFO] [stdout]    |            ----- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 93 |   pub line: usize
[INFO] [stdout]    |       ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Token` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `has_errors` and `nonliteral_token` are never used
[INFO] [stdout]   --> src/scanner.rs:38:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | impl Scanner {
[INFO] [stdout]    | ------------ methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 38 |     fn has_errors(&self) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 42 |     fn nonliteral_token(&mut self, token_type: TokenType) -> Token {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:74:9
[INFO] [stdout]    |
[INFO] [stdout] 74 |         run(&line.trim());
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 74 |         let _ = run(&line.trim());
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Binary`, `Grouping`, `Literal`, and `Unary` are never constructed
[INFO] [stdout]   --> src/grammar.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub enum Expr<'a> {
[INFO] [stdout]    |          ---- variants in this enum
[INFO] [stdout] 29 |     Binary { left: &'a Expr<'a>, operator: token::Token, right: &'a Expr<'a> },
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 30 |     Grouping { expression: &'a Expr<'a> },
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 31 |     Literal { value: &'a token::Literal },
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 32 |     Unary { operator: &'a token::Token, right: &'a Expr<'a> }
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:74:9
[INFO] [stdout]    |
[INFO] [stdout] 74 |         run(&line.trim());
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 74 |         let _ = run(&line.trim());
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.20s
[INFO] running `Command { std: "docker" "inspect" "9f17765c90d7b98ebf1f0767c4ca11a365336a76511ce227c2bfd17553c5b45e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9f17765c90d7b98ebf1f0767c4ca11a365336a76511ce227c2bfd17553c5b45e", kill_on_drop: false }`
[INFO] [stdout] 9f17765c90d7b98ebf1f0767c4ca11a365336a76511ce227c2bfd17553c5b45e
