[INFO] cloning repository https://github.com/yjhmelody/lua-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/yjhmelody/lua-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyjhmelody%2Flua-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyjhmelody%2Flua-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b2a0cb41ad5d46bbf47b0b89d914bfdde613fe97
[INFO] checking yjhmelody/lua-rs against try#3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f for pr-87248
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyjhmelody%2Flua-rs" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/yjhmelody/lua-rs on toolchain 3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/yjhmelody/lua-rs
[INFO] finished tweaking git repo https://github.com/yjhmelody/lua-rs
[INFO] tweaked toml for git repo https://github.com/yjhmelody/lua-rs written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/yjhmelody/lua-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "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-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] aa212c3ffa300ace3861b4f0389ae93fa8ce5da858af82a57cdbcabb177016e9
[INFO] running `Command { std: "docker" "start" "-a" "aa212c3ffa300ace3861b4f0389ae93fa8ce5da858af82a57cdbcabb177016e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "aa212c3ffa300ace3861b4f0389ae93fa8ce5da858af82a57cdbcabb177016e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aa212c3ffa300ace3861b4f0389ae93fa8ce5da858af82a57cdbcabb177016e9", kill_on_drop: false }`
[INFO] [stdout] aa212c3ffa300ace3861b4f0389ae93fa8ce5da858af82a57cdbcabb177016e9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7f830d868778def3ddc3db1c0e8e78bcb3366beaeaf669658c626df0bedb018b
[INFO] running `Command { std: "docker" "start" "-a" "7f830d868778def3ddc3db1c0e8e78bcb3366beaeaf669658c626df0bedb018b", kill_on_drop: false }`
[INFO] [stderr]    Compiling regex v1.1.2
[INFO] [stderr]     Checking lua-rs v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::process::exit`
[INFO] [stdout]  --> src/compiler/parser.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::process::exit;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Ref`
[INFO] [stdout]   --> src/compiler/codegen.rs:39:17
[INFO] [stdout]    |
[INFO] [stdout] 39 | use std::cell::{Ref, RefCell};
[INFO] [stdout]    |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around method argument
[INFO] [stdout]    --> src/compiler/codegen.rs:881:43
[INFO] [stdout]     |
[INFO] [stdout] 881 |         self.emit_jmp(block.last_line, a, (pc_before_block as isize - self.pc() as isize - 1));
[INFO] [stdout]     |                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around method argument
[INFO] [stdout]    --> src/compiler/codegen.rs:909:43
[INFO] [stdout]     |
[INFO] [stdout] 909 |         self.emit_jmp(block.last_line, 0, (pc_before_exp as isize - self.pc() as isize - 1));
[INFO] [stdout]     |                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs`
[INFO] [stdout]     --> src/compiler/codegen.rs:1498:9
[INFO] [stdout]      |
[INFO] [stdout] 1498 |     use std::fs;
[INFO] [stdout]      |         ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::binary::encode`
[INFO] [stdout]     --> src/compiler/codegen.rs:1500:9
[INFO] [stdout]      |
[INFO] [stdout] 1500 |     use crate::binary::encode;
[INFO] [stdout]      |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::compiler::lexer::*`
[INFO] [stdout]     --> src/compiler/codegen.rs:1501:9
[INFO] [stdout]      |
[INFO] [stdout] 1501 |     use crate::compiler::lexer::*;
[INFO] [stdout]      |         ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::compiler::parser::*`
[INFO] [stdout]     --> src/compiler/codegen.rs:1502:9
[INFO] [stdout]      |
[INFO] [stdout] 1502 |     use crate::compiler::parser::*;
[INFO] [stdout]      |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]     --> src/compiler/codegen.rs:1504:9
[INFO] [stdout]      |
[INFO] [stdout] 1504 |     use super::*;
[INFO] [stdout]      |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::process::exit`
[INFO] [stdout]  --> src/compiler/parser.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::process::exit;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Ref`
[INFO] [stdout]   --> src/compiler/codegen.rs:39:17
[INFO] [stdout]    |
[INFO] [stdout] 39 | use std::cell::{Ref, RefCell};
[INFO] [stdout]    |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around method argument
[INFO] [stdout]    --> src/compiler/codegen.rs:881:43
[INFO] [stdout]     |
[INFO] [stdout] 881 |         self.emit_jmp(block.last_line, a, (pc_before_block as isize - self.pc() as isize - 1));
[INFO] [stdout]     |                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around method argument
[INFO] [stdout]    --> src/compiler/codegen.rs:909:43
[INFO] [stdout]     |
[INFO] [stdout] 909 |         self.emit_jmp(block.last_line, 0, (pc_before_exp as isize - self.pc() as isize - 1));
[INFO] [stdout]     |                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `block`
[INFO] [stdout]    --> src/compiler/parser.rs:993:13
[INFO] [stdout]     |
[INFO] [stdout] 993 |         let block = parse_block(&mut lexer).expect("parse error");
[INFO] [stdout]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_block`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `proto`
[INFO] [stdout]   --> src/binary/mod.rs:41:13
[INFO] [stdout]    |
[INFO] [stdout] 41 |         let proto = decode(s);
[INFO] [stdout]    |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_proto`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_encode`
[INFO] [stdout]   --> src/binary/mod.rs:44:8
[INFO] [stdout]    |
[INFO] [stdout] 44 |     fn test_encode() {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/binary/mod.rs:48:9
[INFO] [stdout]    |
[INFO] [stdout] 48 |         fs::write("./tests/test.out", s);
[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: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_encode`
[INFO] [stdout]   --> src/binary/mod.rs:44:8
[INFO] [stdout]    |
[INFO] [stdout] 44 |     fn test_encode() {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]     --> src/compiler/codegen.rs:1583:9
[INFO] [stdout]      |
[INFO] [stdout] 1583 |         fs::write("./tests/test.out", bytes);
[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/binary/mod.rs:48:9
[INFO] [stdout]    |
[INFO] [stdout] 48 |         fs::write("./tests/test.out", s);
[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: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.86s
[INFO] running `Command { std: "docker" "inspect" "7f830d868778def3ddc3db1c0e8e78bcb3366beaeaf669658c626df0bedb018b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7f830d868778def3ddc3db1c0e8e78bcb3366beaeaf669658c626df0bedb018b", kill_on_drop: false }`
[INFO] [stdout] 7f830d868778def3ddc3db1c0e8e78bcb3366beaeaf669658c626df0bedb018b