[INFO] cloning repository https://github.com/vinayakdsci/rlox
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/vinayakdsci/rlox" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvinayakdsci%2Frlox", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvinayakdsci%2Frlox'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a609dafc8e9b3643860ff7a1fd05cf6ac92d11b4
[INFO] checking vinayakdsci/rlox against try#44e31dee3cf6f37b4f652572897bb0eb25c477ee for pr-139763
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvinayakdsci%2Frlox" "/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/vinayakdsci/rlox on toolchain 44e31dee3cf6f37b4f652572897bb0eb25c477ee
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+44e31dee3cf6f37b4f652572897bb0eb25c477ee" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/vinayakdsci/rlox
[INFO] finished tweaking git repo https://github.com/vinayakdsci/rlox
[INFO] tweaked toml for git repo https://github.com/vinayakdsci/rlox written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/vinayakdsci/rlox 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" "+44e31dee3cf6f37b4f652572897bb0eb25c477ee" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+44e31dee3cf6f37b4f652572897bb0eb25c477ee" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dd0eeedf18f2d387f5789dbb8d97cd7bf318d8ae6a67d595bf291974e44422d7
[INFO] running `Command { std: "docker" "start" "-a" "dd0eeedf18f2d387f5789dbb8d97cd7bf318d8ae6a67d595bf291974e44422d7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dd0eeedf18f2d387f5789dbb8d97cd7bf318d8ae6a67d595bf291974e44422d7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dd0eeedf18f2d387f5789dbb8d97cd7bf318d8ae6a67d595bf291974e44422d7", kill_on_drop: false }`
[INFO] [stdout] dd0eeedf18f2d387f5789dbb8d97cd7bf318d8ae6a67d595bf291974e44422d7
[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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+44e31dee3cf6f37b4f652572897bb0eb25c477ee" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 178305994d295a4f4b3fb03051caa0660ddbdd895ec631b1809a56169065b72c
[INFO] running `Command { std: "docker" "start" "-a" "178305994d295a4f4b3fb03051caa0660ddbdd895ec631b1809a56169065b72c", kill_on_drop: false }`
[INFO] [stderr]     Checking rlox v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `chunk`
[INFO] [stdout]   --> src/compiler.rs:45:73
[INFO] [stdout]    |
[INFO] [stdout] 45 |     fn advance(&mut self, source: &str, scanner: &mut scanner::Scanner, chunk: &mut Chunk) {
[INFO] [stdout]    |                                                                         ^^^^^ help: if this is intentional, prefix it with an underscore: `_chunk`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `token_kind`
[INFO] [stdout]   --> src/compiler.rs:77:17
[INFO] [stdout]    |
[INFO] [stdout] 77 |                 token_kind => {
[INFO] [stdout]    |                 ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_token_kind`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `token_kind`
[INFO] [stdout]   --> src/compiler.rs:70:9
[INFO] [stdout]    |
[INFO] [stdout] 70 |         token_kind: scanner::TokenKind,
[INFO] [stdout]    |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_token_kind`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `msg`
[INFO] [stdout]   --> src/compiler.rs:71:9
[INFO] [stdout]    |
[INFO] [stdout] 71 |         msg: &str,
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_msg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `chunk`
[INFO] [stdout]   --> src/compiler.rs:45:73
[INFO] [stdout]    |
[INFO] [stdout] 45 |     fn advance(&mut self, source: &str, scanner: &mut scanner::Scanner, chunk: &mut Chunk) {
[INFO] [stdout]    |                                                                         ^^^^^ help: if this is intentional, prefix it with an underscore: `_chunk`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `token_kind`
[INFO] [stdout]   --> src/compiler.rs:77:17
[INFO] [stdout]    |
[INFO] [stdout] 77 |                 token_kind => {
[INFO] [stdout]    |                 ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_token_kind`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `token_kind`
[INFO] [stdout]   --> src/compiler.rs:70:9
[INFO] [stdout]    |
[INFO] [stdout] 70 |         token_kind: scanner::TokenKind,
[INFO] [stdout]    |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_token_kind`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `msg`
[INFO] [stdout]   --> src/compiler.rs:71:9
[INFO] [stdout]    |
[INFO] [stdout] 71 |         msg: &str,
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_msg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/compiler.rs:151:29
[INFO] [stdout]     |
[INFO] [stdout] 151 |                         let mut byte = chunk.add_constant(y);
[INFO] [stdout]     |                             ----^^^^
[INFO] [stdout]     |                             |
[INFO] [stdout]     |                             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `prefix`
[INFO] [stdout]    --> src/compiler.rs:230:14
[INFO] [stdout]     |
[INFO] [stdout] 230 |         let (prefix, infix, prec) = parse_rule(token_kind.to_owned());
[INFO] [stdout]     |              ^^^^^^ help: if this is intentional, prefix it with an underscore: `_prefix`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `infix`
[INFO] [stdout]    --> src/compiler.rs:230:22
[INFO] [stdout]     |
[INFO] [stdout] 230 |         let (prefix, infix, prec) = parse_rule(token_kind.to_owned());
[INFO] [stdout]     |                      ^^^^^ help: if this is intentional, prefix it with an underscore: `_infix`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/compiler.rs:151:29
[INFO] [stdout]     |
[INFO] [stdout] 151 |                         let mut byte = chunk.add_constant(y);
[INFO] [stdout]     |                             ----^^^^
[INFO] [stdout]     |                             |
[INFO] [stdout]     |                             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `prefix`
[INFO] [stdout]    --> src/compiler.rs:230:14
[INFO] [stdout]     |
[INFO] [stdout] 230 |         let (prefix, infix, prec) = parse_rule(token_kind.to_owned());
[INFO] [stdout]     |              ^^^^^^ help: if this is intentional, prefix it with an underscore: `_prefix`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `infix`
[INFO] [stdout]    --> src/compiler.rs:230:22
[INFO] [stdout]     |
[INFO] [stdout] 230 |         let (prefix, infix, prec) = parse_rule(token_kind.to_owned());
[INFO] [stdout]     |                      ^^^^^ help: if this is intentional, prefix it with an underscore: `_infix`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/vm.rs:33:18
[INFO] [stdout]    |
[INFO] [stdout] 33 |             Some(x) => {
[INFO] [stdout]    |                  ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/vm.rs:33:18
[INFO] [stdout]    |
[INFO] [stdout] 33 |             Some(x) => {
[INFO] [stdout]    |                  ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `PREC_OR` is never used
[INFO] [stdout]   --> src/compiler.rs:12:7
[INFO] [stdout]    |
[INFO] [stdout] 12 | const PREC_OR: u8 = 3; // or
[INFO] [stdout]    |       ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `PREC_AND` is never used
[INFO] [stdout]   --> src/compiler.rs:13:7
[INFO] [stdout]    |
[INFO] [stdout] 13 | const PREC_AND: u8 = 4; // and
[INFO] [stdout]    |       ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `PREC_EQUALITY` is never used
[INFO] [stdout]   --> src/compiler.rs:14:7
[INFO] [stdout]    |
[INFO] [stdout] 14 | const PREC_EQUALITY: u8 = 5; // == !=
[INFO] [stdout]    |       ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `PREC_COMPARISON` is never used
[INFO] [stdout]   --> src/compiler.rs:15:7
[INFO] [stdout]    |
[INFO] [stdout] 15 | const PREC_COMPARISON: u8 = 6; // < > <= >=
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `PREC_CALL` is never used
[INFO] [stdout]   --> src/compiler.rs:19:7
[INFO] [stdout]    |
[INFO] [stdout] 19 | const PREC_CALL: u8 = 10; // . ()
[INFO] [stdout]    |       ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `PREC_PRIMARY` is never used
[INFO] [stdout]   --> src/compiler.rs:20:7
[INFO] [stdout]    |
[INFO] [stdout] 20 | const PREC_PRIMARY: u8 = 11;
[INFO] [stdout]    |       ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `STACK_MAX` is never used
[INFO] [stdout]  --> src/vm.rs:6:7
[INFO] [stdout]   |
[INFO] [stdout] 6 | const STACK_MAX: usize = 256;
[INFO] [stdout]   |       ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `InterpretRuntimeError` is never constructed
[INFO] [stdout]   --> src/vm.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub enum InterpretResult {
[INFO] [stdout]    |          --------------- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 13 |     InterpretRuntimeError,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `PREC_OR` is never used
[INFO] [stdout]   --> src/compiler.rs:12:7
[INFO] [stdout]    |
[INFO] [stdout] 12 | const PREC_OR: u8 = 3; // or
[INFO] [stdout]    |       ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `PREC_AND` is never used
[INFO] [stdout]   --> src/compiler.rs:13:7
[INFO] [stdout]    |
[INFO] [stdout] 13 | const PREC_AND: u8 = 4; // and
[INFO] [stdout]    |       ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `PREC_EQUALITY` is never used
[INFO] [stdout]   --> src/compiler.rs:14:7
[INFO] [stdout]    |
[INFO] [stdout] 14 | const PREC_EQUALITY: u8 = 5; // == !=
[INFO] [stdout]    |       ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `PREC_COMPARISON` is never used
[INFO] [stdout]   --> src/compiler.rs:15:7
[INFO] [stdout]    |
[INFO] [stdout] 15 | const PREC_COMPARISON: u8 = 6; // < > <= >=
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `PREC_CALL` is never used
[INFO] [stdout]   --> src/compiler.rs:19:7
[INFO] [stdout]    |
[INFO] [stdout] 19 | const PREC_CALL: u8 = 10; // . ()
[INFO] [stdout]    |       ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `PREC_PRIMARY` is never used
[INFO] [stdout]   --> src/compiler.rs:20:7
[INFO] [stdout]    |
[INFO] [stdout] 20 | const PREC_PRIMARY: u8 = 11;
[INFO] [stdout]    |       ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `STACK_MAX` is never used
[INFO] [stdout]  --> src/vm.rs:6:7
[INFO] [stdout]   |
[INFO] [stdout] 6 | const STACK_MAX: usize = 256;
[INFO] [stdout]   |       ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `InterpretRuntimeError` is never constructed
[INFO] [stdout]   --> src/vm.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub enum InterpretResult {
[INFO] [stdout]    |          --------------- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 13 |     InterpretRuntimeError,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.19s
[INFO] running `Command { std: "docker" "inspect" "178305994d295a4f4b3fb03051caa0660ddbdd895ec631b1809a56169065b72c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "178305994d295a4f4b3fb03051caa0660ddbdd895ec631b1809a56169065b72c", kill_on_drop: false }`
[INFO] [stdout] 178305994d295a4f4b3fb03051caa0660ddbdd895ec631b1809a56169065b72c