[INFO] cloning repository https://github.com/re-masashi/rlox
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/re-masashi/rlox" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fre-masashi%2Frlox", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fre-masashi%2Frlox'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 83ac58ad50e36f9926ee105e81002cea5cce5090
[INFO] checking re-masashi/rlox against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fre-masashi%2Frlox" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/re-masashi/rlox
[INFO] finished tweaking git repo https://github.com/re-masashi/rlox
[INFO] tweaked toml for git repo https://github.com/re-masashi/rlox written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/re-masashi/rlox on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/re-masashi/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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "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
[ERROR] error running command: no output for 300 seconds
[INFO] checking re-masashi/rlox against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fre-masashi%2Frlox" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/re-masashi/rlox
[INFO] finished tweaking git repo https://github.com/re-masashi/rlox
[INFO] tweaked toml for git repo https://github.com/re-masashi/rlox written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/re-masashi/rlox on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/re-masashi/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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded memoffset v0.5.5
[INFO] [stderr]   Downloaded either v1.6.0
[INFO] [stderr]   Downloaded oorandom v11.1.2
[INFO] [stderr]   Downloaded serde_derive v1.0.115
[INFO] [stderr]   Downloaded rayon-core v1.7.1
[INFO] [stderr]   Downloaded rayon v1.3.1
[INFO] [stderr]   Downloaded serde_json v1.0.57
[INFO] [stderr]   Downloaded serde v1.0.115
[INFO] [stderr]   Downloaded syn v1.0.39
[INFO] [stderr]   Downloaded bstr v0.2.13
[INFO] [stderr]   Downloaded libc v0.2.76
[INFO] [stderr]   Downloaded csv v1.1.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 12f88d589c7e4c48673f0a39a638969ffa5b3a9b5bfbc4040a92b465d9b2a53a
[INFO] running `Command { std: "docker" "start" "-a" "12f88d589c7e4c48673f0a39a638969ffa5b3a9b5bfbc4040a92b465d9b2a53a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "12f88d589c7e4c48673f0a39a638969ffa5b3a9b5bfbc4040a92b465d9b2a53a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "12f88d589c7e4c48673f0a39a638969ffa5b3a9b5bfbc4040a92b465d9b2a53a", kill_on_drop: false }`
[INFO] [stdout] 12f88d589c7e4c48673f0a39a638969ffa5b3a9b5bfbc4040a92b465d9b2a53a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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 -Dunmustuse_in_always_ok" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 14c55c0d6ab98f8cd369d85dd98b574d9a1ebf4d14d2d2fa4546fb7b25d01177
[INFO] running `Command { std: "docker" "start" "-a" "14c55c0d6ab98f8cd369d85dd98b574d9a1ebf4d14d2d2fa4546fb7b25d01177", kill_on_drop: false }`
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling serde v1.0.115
[INFO] [stderr]    Compiling memoffset v0.5.5
[INFO] [stderr]    Compiling libc v0.2.76
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling proc-macro2 v1.0.19
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling rayon-core v1.7.1
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling syn v1.0.39
[INFO] [stderr]     Checking either v1.6.0
[INFO] [stderr]    Compiling cast v0.2.3
[INFO] [stderr]    Compiling serde_json v1.0.57
[INFO] [stderr]     Checking itoa v0.4.6
[INFO] [stderr]    Compiling rayon v1.3.1
[INFO] [stderr]    Compiling serde_derive v1.0.115
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking itertools v0.9.0
[INFO] [stderr]     Checking half v1.6.0
[INFO] [stderr]     Checking regex-syntax v0.6.18
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking walkdir v2.3.1
[INFO] [stderr]     Checking oorandom v11.1.2
[INFO] [stderr]     Checking rlox v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `ModuleChunk`
[INFO] [stdout]  --> src/compiler.rs:1:75
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::chunk::{Chunk, ClassChunk, FunctionChunk, FunctionType, Instr, ModuleChunk, OpCode};
[INFO] [stdout]   |                                                                           ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::interpret`
[INFO] [stdout]  --> src/compiler.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::interpret;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Local`
[INFO] [stdout]  --> src/compiler.rs:5:33
[INFO] [stdout]   |
[INFO] [stdout] 5 | use crate::resolver::{Resolver, Local};
[INFO] [stdout]   |                                 ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]     Checking regex-automata v0.1.9
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/native.rs:87:5
[INFO] [stdout]    |
[INFO] [stdout] 66 | /     match _args[1].clone() {
[INFO] [stdout] 67 | |         Value::LoxArray(mut v) => {
[INFO] [stdout] 68 | |             arr = v.clone();
[INFO] [stdout] 69 | |             if arr.len() < index {
[INFO] [stdout] ...  |
[INFO] [stdout] 86 | |     };
[INFO] [stdout]    | |_____- any code following this `match` expression is unreachable, as all arms diverge
[INFO] [stdout] 87 |       Value::Double(21.0)
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^ unreachable expression
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/compiler.rs:492:21
[INFO] [stdout]     |
[INFO] [stdout] 492 |                 let mut compiler = Compiler::new(&s, self.quiet_mode);
[INFO] [stdout]     |                     ----^^^^^^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/compiler.rs:917:17
[INFO] [stdout]     |
[INFO] [stdout] 917 |             Err(e) => {
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/native.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |     let mut index: usize;
[INFO] [stdout]    |         ----^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/native.rs:37:9
[INFO] [stdout]    |
[INFO] [stdout] 37 |     let mut arr: Vec<Value>;
[INFO] [stdout]    |         ----^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/native.rs:54:9
[INFO] [stdout]    |
[INFO] [stdout] 54 |     let mut index: usize;
[INFO] [stdout]    |         ----^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/native.rs:67:25
[INFO] [stdout]    |
[INFO] [stdout] 67 |         Value::LoxArray(mut v) => {
[INFO] [stdout]    |                         ----^
[INFO] [stdout]    |                         |
[INFO] [stdout]    |                         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> src/native.rs:82:9
[INFO] [stdout]    |
[INFO] [stdout] 82 |         v => {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> src/native.rs:97:9
[INFO] [stdout]    |
[INFO] [stdout] 97 |         v => {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stdout] warning: irrefutable `if let` pattern
[INFO] [stdout]    --> src/vm.rs:763:31
[INFO] [stdout]     |
[INFO] [stdout] 763 |                     } else if let (val1, val2) = t {
[INFO] [stdout]     |                               ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this pattern will always match, so the `if let` is useless
[INFO] [stdout]     = help: consider replacing the `if let` with a `let`
[INFO] [stdout]     = note: `#[warn(irrefutable_let_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `name`, `classes`, and `functions` are never read
[INFO] [stdout]    --> src/chunk.rs:132:9
[INFO] [stdout]     |
[INFO] [stdout] 131 | pub struct ModuleChunk {
[INFO] [stdout]     |            ----------- fields in this struct
[INFO] [stdout] 132 |     pub name: String,
[INFO] [stdout]     |         ^^^^
[INFO] [stdout] 133 |     pub classes: HashMap<usize, usize>,
[INFO] [stdout]     |         ^^^^^^^
[INFO] [stdout] 134 |     pub functions: HashMap<usize, usize>,
[INFO] [stdout]     |         ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `ModuleChunk` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]    --> src/chunk.rs:137:12
[INFO] [stdout]     |
[INFO] [stdout] 136 | impl ModuleChunk {
[INFO] [stdout]     | ---------------- associated function in this implementation
[INFO] [stdout] 137 |     pub fn new(name: String) -> ModuleChunk {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking crossbeam-queue v0.2.3
[INFO] [stdout] warning: variant `ModuleAccess` is never constructed
[INFO] [stdout]   --> src/prec.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub enum ParseFn {
[INFO] [stdout]    |          ------- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 36 |     ModuleAccess,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `modules` is never read
[INFO] [stdout]    --> src/vm.rs:368:9
[INFO] [stdout]     |
[INFO] [stdout] 361 | pub struct VM {
[INFO] [stdout]     |            -- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 368 |     pub modules: Vec<ModuleChunk>,
[INFO] [stdout]     |         ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `collect` that must be used
[INFO] [stdout]    --> src/compiler.rs:504:17
[INFO] [stdout]     |
[INFO] [stdout] 504 | /                 compile_result
[INFO] [stdout] 505 | |                     .identifier_constants
[INFO] [stdout] 506 | |                     .clone()
[INFO] [stdout] 507 | |                     .into_iter()
[INFO] [stdout] ...   |
[INFO] [stdout] 514 | |                     })
[INFO] [stdout] 515 | |                     .collect::<Vec<_>>();
[INFO] [stdout]     | |________________________________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 504 |                 let _ = compile_result
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `collect` that must be used
[INFO] [stdout]    --> src/compiler.rs:524:17
[INFO] [stdout]     |
[INFO] [stdout] 524 | /                 compile_result
[INFO] [stdout] 525 | |                     .identifier_constants
[INFO] [stdout] 526 | |                     .clone()
[INFO] [stdout] 527 | |                     .into_iter()
[INFO] [stdout] ...   |
[INFO] [stdout] 534 | |                     })
[INFO] [stdout] 535 | |                     .collect::<Vec<_>>();
[INFO] [stdout]     | |________________________________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 524 |                 let _ = compile_result
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/scanner.rs:67:22
[INFO] [stdout]    |
[INFO] [stdout] 67 |     pub fn new(code: &str) -> Scanner {
[INFO] [stdout]    |                      ^^^^     ^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                      |
[INFO] [stdout]    |                      the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 67 |     pub fn new(code: &str) -> Scanner<'_> {
[INFO] [stdout]    |                                      ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function pointer comparisons do not produce meaningful results since their addresses are not guaranteed to be unique
[INFO] [stdout]   --> src/value.rs:13:20
[INFO] [stdout]    |
[INFO] [stdout]  6 | #[derive(Debug, Clone, PartialEq)]
[INFO] [stdout]    |                        --------- in this derive macro expansion
[INFO] [stdout] ...
[INFO] [stdout] 13 |     NativeFunction(NativeFn),
[INFO] [stdout]    |                    ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: the address of the same function can vary between different codegen units
[INFO] [stdout]    = note: furthermore, different functions could have the same address after being merged together
[INFO] [stdout]    = note: for more information visit <https://doc.rust-lang.org/nightly/core/ptr/fn.fn_addr_eq.html>
[INFO] [stdout]    = note: `#[warn(unpredictable_function_pointer_comparisons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function pointer comparisons do not produce meaningful results since their addresses are not guaranteed to be unique
[INFO] [stdout]   --> src/value.rs:90:65
[INFO] [stdout]    |
[INFO] [stdout] 90 |         (Value::NativeFunction(x), Value::NativeFunction(y)) => x == y,
[INFO] [stdout]    |                                                                 ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: the address of the same function can vary between different codegen units
[INFO] [stdout]    = note: furthermore, different functions could have the same address after being merged together
[INFO] [stdout]    = note: for more information visit <https://doc.rust-lang.org/nightly/core/ptr/fn.fn_addr_eq.html>
[INFO] [stdout] help: refactor your code, or use `std::ptr::fn_addr_eq` to suppress the lint
[INFO] [stdout]    |
[INFO] [stdout] 90 -         (Value::NativeFunction(x), Value::NativeFunction(y)) => x == y,
[INFO] [stdout] 90 +         (Value::NativeFunction(x), Value::NativeFunction(y)) => std::ptr::fn_addr_eq(*x, *y),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking crossbeam-deque v0.7.3
[INFO] [stderr]     Checking criterion-plot v0.4.3
[INFO] [stderr]     Checking plotters v0.2.15
[INFO] [stderr]     Checking regex v1.3.9
[INFO] [stderr]     Checking bstr v0.2.13
[INFO] [stderr]     Checking serde_cbor v0.11.1
[INFO] [stderr]     Checking csv v1.1.3
[INFO] [stderr]     Checking tinytemplate v1.1.0
[INFO] [stderr]     Checking criterion v0.3.3
[INFO] [stdout] warning: unused import: `ModuleChunk`
[INFO] [stdout]  --> src/compiler.rs:1:75
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::chunk::{Chunk, ClassChunk, FunctionChunk, FunctionType, Instr, ModuleChunk, OpCode};
[INFO] [stdout]   |                                                                           ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::interpret`
[INFO] [stdout]  --> src/compiler.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::interpret;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Local`
[INFO] [stdout]  --> src/compiler.rs:5:33
[INFO] [stdout]   |
[INFO] [stdout] 5 | use crate::resolver::{Resolver, Local};
[INFO] [stdout]   |                                 ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/native.rs:87:5
[INFO] [stdout]    |
[INFO] [stdout] 66 | /     match _args[1].clone() {
[INFO] [stdout] 67 | |         Value::LoxArray(mut v) => {
[INFO] [stdout] 68 | |             arr = v.clone();
[INFO] [stdout] 69 | |             if arr.len() < index {
[INFO] [stdout] ...  |
[INFO] [stdout] 86 | |     };
[INFO] [stdout]    | |_____- any code following this `match` expression is unreachable, as all arms diverge
[INFO] [stdout] 87 |       Value::Double(21.0)
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^ unreachable expression
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/compiler.rs:492:21
[INFO] [stdout]     |
[INFO] [stdout] 492 |                 let mut compiler = Compiler::new(&s, self.quiet_mode);
[INFO] [stdout]     |                     ----^^^^^^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/compiler.rs:917:17
[INFO] [stdout]     |
[INFO] [stdout] 917 |             Err(e) => {
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/native.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |     let mut index: usize;
[INFO] [stdout]    |         ----^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/native.rs:37:9
[INFO] [stdout]    |
[INFO] [stdout] 37 |     let mut arr: Vec<Value>;
[INFO] [stdout]    |         ----^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/native.rs:54:9
[INFO] [stdout]    |
[INFO] [stdout] 54 |     let mut index: usize;
[INFO] [stdout]    |         ----^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/native.rs:67:25
[INFO] [stdout]    |
[INFO] [stdout] 67 |         Value::LoxArray(mut v) => {
[INFO] [stdout]    |                         ----^
[INFO] [stdout]    |                         |
[INFO] [stdout]    |                         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> src/native.rs:82:9
[INFO] [stdout]    |
[INFO] [stdout] 82 |         v => {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> src/native.rs:97:9
[INFO] [stdout]    |
[INFO] [stdout] 97 |         v => {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: irrefutable `if let` pattern
[INFO] [stdout]    --> src/vm.rs:763:31
[INFO] [stdout]     |
[INFO] [stdout] 763 |                     } else if let (val1, val2) = t {
[INFO] [stdout]     |                               ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this pattern will always match, so the `if let` is useless
[INFO] [stdout]     = help: consider replacing the `if let` with a `let`
[INFO] [stdout]     = note: `#[warn(irrefutable_let_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `name`, `classes`, and `functions` are never read
[INFO] [stdout]    --> src/chunk.rs:132:9
[INFO] [stdout]     |
[INFO] [stdout] 131 | pub struct ModuleChunk {
[INFO] [stdout]     |            ----------- fields in this struct
[INFO] [stdout] 132 |     pub name: String,
[INFO] [stdout]     |         ^^^^
[INFO] [stdout] 133 |     pub classes: HashMap<usize, usize>,
[INFO] [stdout]     |         ^^^^^^^
[INFO] [stdout] 134 |     pub functions: HashMap<usize, usize>,
[INFO] [stdout]     |         ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `ModuleChunk` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]    --> src/chunk.rs:137:12
[INFO] [stdout]     |
[INFO] [stdout] 136 | impl ModuleChunk {
[INFO] [stdout]     | ---------------- associated function in this implementation
[INFO] [stdout] 137 |     pub fn new(name: String) -> ModuleChunk {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `ModuleAccess` is never constructed
[INFO] [stdout]   --> src/prec.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub enum ParseFn {
[INFO] [stdout]    |          ------- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 36 |     ModuleAccess,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `modules` is never read
[INFO] [stdout]    --> src/vm.rs:368:9
[INFO] [stdout]     |
[INFO] [stdout] 361 | pub struct VM {
[INFO] [stdout]     |            -- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 368 |     pub modules: Vec<ModuleChunk>,
[INFO] [stdout]     |         ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `collect` that must be used
[INFO] [stdout]    --> src/compiler.rs:504:17
[INFO] [stdout]     |
[INFO] [stdout] 504 | /                 compile_result
[INFO] [stdout] 505 | |                     .identifier_constants
[INFO] [stdout] 506 | |                     .clone()
[INFO] [stdout] 507 | |                     .into_iter()
[INFO] [stdout] ...   |
[INFO] [stdout] 514 | |                     })
[INFO] [stdout] 515 | |                     .collect::<Vec<_>>();
[INFO] [stdout]     | |________________________________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 504 |                 let _ = compile_result
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `collect` that must be used
[INFO] [stdout]    --> src/compiler.rs:524:17
[INFO] [stdout]     |
[INFO] [stdout] 524 | /                 compile_result
[INFO] [stdout] 525 | |                     .identifier_constants
[INFO] [stdout] 526 | |                     .clone()
[INFO] [stdout] 527 | |                     .into_iter()
[INFO] [stdout] ...   |
[INFO] [stdout] 534 | |                     })
[INFO] [stdout] 535 | |                     .collect::<Vec<_>>();
[INFO] [stdout]     | |________________________________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 524 |                 let _ = compile_result
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/scanner.rs:67:22
[INFO] [stdout]    |
[INFO] [stdout] 67 |     pub fn new(code: &str) -> Scanner {
[INFO] [stdout]    |                      ^^^^     ^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                      |
[INFO] [stdout]    |                      the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 67 |     pub fn new(code: &str) -> Scanner<'_> {
[INFO] [stdout]    |                                      ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function pointer comparisons do not produce meaningful results since their addresses are not guaranteed to be unique
[INFO] [stdout]   --> src/value.rs:13:20
[INFO] [stdout]    |
[INFO] [stdout]  6 | #[derive(Debug, Clone, PartialEq)]
[INFO] [stdout]    |                        --------- in this derive macro expansion
[INFO] [stdout] ...
[INFO] [stdout] 13 |     NativeFunction(NativeFn),
[INFO] [stdout]    |                    ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: the address of the same function can vary between different codegen units
[INFO] [stdout]    = note: furthermore, different functions could have the same address after being merged together
[INFO] [stdout]    = note: for more information visit <https://doc.rust-lang.org/nightly/core/ptr/fn.fn_addr_eq.html>
[INFO] [stdout]    = note: `#[warn(unpredictable_function_pointer_comparisons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function pointer comparisons do not produce meaningful results since their addresses are not guaranteed to be unique
[INFO] [stdout]   --> src/value.rs:90:65
[INFO] [stdout]    |
[INFO] [stdout] 90 |         (Value::NativeFunction(x), Value::NativeFunction(y)) => x == y,
[INFO] [stdout]    |                                                                 ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: the address of the same function can vary between different codegen units
[INFO] [stdout]    = note: furthermore, different functions could have the same address after being merged together
[INFO] [stdout]    = note: for more information visit <https://doc.rust-lang.org/nightly/core/ptr/fn.fn_addr_eq.html>
[INFO] [stdout] help: refactor your code, or use `std::ptr::fn_addr_eq` to suppress the lint
[INFO] [stdout]    |
[INFO] [stdout] 90 -         (Value::NativeFunction(x), Value::NativeFunction(y)) => x == y,
[INFO] [stdout] 90 +         (Value::NativeFunction(x), Value::NativeFunction(y)) => std::ptr::fn_addr_eq(*x, *y),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.61s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: criterion v0.3.3
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 3`
[INFO] running `Command { std: "docker" "inspect" "14c55c0d6ab98f8cd369d85dd98b574d9a1ebf4d14d2d2fa4546fb7b25d01177", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "14c55c0d6ab98f8cd369d85dd98b574d9a1ebf4d14d2d2fa4546fb7b25d01177", kill_on_drop: false }`
[INFO] [stdout] 14c55c0d6ab98f8cd369d85dd98b574d9a1ebf4d14d2d2fa4546fb7b25d01177
