[INFO] cloning repository https://github.com/kaiusl/rslox
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kaiusl/rslox" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkaiusl%2Frslox", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkaiusl%2Frslox'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 520d30d37c5b3f7d4913e2fd77e3fc594685632f
[INFO] testing kaiusl/rslox against beta-2026-01-20 for beta-1.94-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkaiusl%2Frslox" "/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/kaiusl/rslox
[INFO] finished tweaking git repo https://github.com/kaiusl/rslox
[INFO] tweaked toml for git repo https://github.com/kaiusl/rslox written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/kaiusl/rslox on toolchain beta-2026-01-20
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-01-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/kaiusl/rslox 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" "+beta-2026-01-20" "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 rstest v0.22.0
[INFO] [stderr]   Downloaded supports-color v3.0.0
[INFO] [stderr]   Downloaded supports-hyperlinks v3.0.0
[INFO] [stderr]   Downloaded terminal_size v0.3.0
[INFO] [stderr]   Downloaded oorandom v11.1.4
[INFO] [stderr]   Downloaded textwrap v0.16.1
[INFO] [stderr]   Downloaded rstest_macros v0.22.0
[INFO] [stderr]   Downloaded miette-derive v7.2.0
[INFO] [stderr]   Downloaded clap v4.5.17
[INFO] [stderr]   Downloaded similar v2.6.0
[INFO] [stderr]   Downloaded insta v1.40.0
[INFO] [stderr]   Downloaded miette v7.2.0
[INFO] [stderr]   Downloaded clap_builder v4.5.17
[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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-01-20" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 56121877b8c823f212e8b86101a465a568bf621f55ed9e20f42fed084c5eadab
[INFO] running `Command { std: "docker" "start" "-a" "56121877b8c823f212e8b86101a465a568bf621f55ed9e20f42fed084c5eadab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "56121877b8c823f212e8b86101a465a568bf621f55ed9e20f42fed084c5eadab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "56121877b8c823f212e8b86101a465a568bf621f55ed9e20f42fed084c5eadab", kill_on_drop: false }`
[INFO] [stdout] 56121877b8c823f212e8b86101a465a568bf621f55ed9e20f42fed084c5eadab
[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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-01-20" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 63d4a0300879a53b566ef72af33ca058f314b92f1c5f89b2ce270f12267aad21
[INFO] running `Command { std: "docker" "start" "-a" "63d4a0300879a53b566ef72af33ca058f314b92f1c5f89b2ce270f12267aad21", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.86
[INFO] [stderr]    Compiling libc v0.2.158
[INFO] [stderr]    Compiling rustix v0.38.35
[INFO] [stderr]    Compiling anstyle v1.0.8
[INFO] [stderr]    Compiling anstyle-query v1.1.1
[INFO] [stderr]    Compiling colorchoice v1.0.2
[INFO] [stderr]    Compiling cc v1.1.15
[INFO] [stderr]    Compiling anstyle-parse v0.2.5
[INFO] [stderr]    Compiling miniz_oxide v0.7.4
[INFO] [stderr]    Compiling object v0.36.4
[INFO] [stderr]    Compiling thiserror v1.0.63
[INFO] [stderr]    Compiling ahash v0.8.11
[INFO] [stderr]    Compiling unicode-width v0.1.13
[INFO] [stderr]    Compiling clap_lex v0.7.2
[INFO] [stderr]    Compiling zerocopy v0.7.35
[INFO] [stderr]    Compiling once_cell v1.19.0
[INFO] [stderr]    Compiling is_ci v1.2.0
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling supports-hyperlinks v3.0.0
[INFO] [stderr]    Compiling supports-color v3.0.0
[INFO] [stderr]    Compiling textwrap v0.16.1
[INFO] [stderr]    Compiling owo-colors v4.0.0
[INFO] [stderr]    Compiling allocator-api2 v0.2.18
[INFO] [stderr]    Compiling anstream v0.6.15
[INFO] [stderr]    Compiling supports-unicode v3.0.0
[INFO] [stderr]    Compiling clap_builder v4.5.17
[INFO] [stderr]    Compiling hashbrown v0.14.5
[INFO] [stderr]    Compiling quote v1.0.37
[INFO] [stderr]    Compiling syn v2.0.77
[INFO] [stderr]    Compiling backtrace v0.3.73
[INFO] [stderr]    Compiling terminal_size v0.3.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.63
[INFO] [stderr]    Compiling clap_derive v4.5.13
[INFO] [stderr]    Compiling miette-derive v7.2.0
[INFO] [stderr]    Compiling num-derive v0.4.2
[INFO] [stderr]    Compiling backtrace-ext v0.2.1
[INFO] [stderr]    Compiling miette v7.2.0
[INFO] [stderr]    Compiling clap v4.5.17
[INFO] [stderr]    Compiling rslox v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(strict_provenance)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::rc::Rc`
[INFO] [stdout]  --> src/compiler.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::rc::Rc;
[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: `std::sync::LazyLock`
[INFO] [stdout]  --> src/compiler.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::sync::LazyLock;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `GcObj` and `Object`
[INFO] [stdout]  --> src/compiler.rs:7:24
[INFO] [stdout]   |
[INFO] [stdout] 7 | use crate::value::{Gc, GcObj, InternedString, ObjFunction, Object};
[INFO] [stdout]   |                        ^^^^^                               ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `mem`
[INFO] [stdout]  --> src/stack.rs:3:11
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::{mem, ops};
[INFO] [stdout]   |           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Cow`
[INFO] [stdout]  --> src/value.rs:2:25
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::borrow::{self, Cow};
[INFO] [stdout]   |                         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::mem`
[INFO] [stdout]  --> src/vm.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::mem;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `HashSet`
[INFO] [stdout]   --> src/vm.rs:10:26
[INFO] [stdout]    |
[INFO] [stdout] 10 | use hashbrown::{HashMap, HashSet};
[INFO] [stdout]    |                          ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `strict_provenance` has been stable since 1.84.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(strict_provenance)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `src` is never read
[INFO] [stdout]   --> src/compiler/error.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     src: Cow<'b, str>,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `errors` is never read
[INFO] [stdout]   --> src/compiler/error.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     errors: Vec<StaticError<'b>>,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `span` is never read
[INFO] [stdout]   --> src/compiler/error.rs:77:9
[INFO] [stdout]    |
[INFO] [stdout] 77 |     pub span: Span,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `marker` is never read
[INFO] [stdout]   --> src/compiler/error.rs:79:5
[INFO] [stdout]    |
[INFO] [stdout] 79 |     marker: std::marker::PhantomData<&'a ()>,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `kind` is never read
[INFO] [stdout]   --> src/compiler/error.rs:78:9
[INFO] [stdout]    |
[INFO] [stdout] 78 |     pub kind: CompileErrorKind,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `line` is never read
[INFO] [stdout]   --> src/lexer/error.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 28 |     line: Cow<'a, str>,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `span` is never read
[INFO] [stdout]   --> src/lexer/error.rs:32:5
[INFO] [stdout]    |
[INFO] [stdout] 32 |     span: miette::SourceSpan,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `line_number` is never read
[INFO] [stdout]   --> src/lexer/error.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 29 |     line_number: usize,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `token` is never read
[INFO] [stdout]   --> src/lexer/error.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 30 |     token: char,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `line` is never read
[INFO] [stdout]   --> src/lexer/error.rs:63:5
[INFO] [stdout]    |
[INFO] [stdout] 63 |     line: Cow<'a, str>,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `span` is never read
[INFO] [stdout]   --> src/lexer/error.rs:66:5
[INFO] [stdout]    |
[INFO] [stdout] 66 |     span: miette::SourceSpan,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `line_number` is never read
[INFO] [stdout]   --> src/lexer/error.rs:64:5
[INFO] [stdout]    |
[INFO] [stdout] 64 |     line_number: usize,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `span` is never read
[INFO] [stdout]   --> src/vm/error.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |     pub span: Option<miette::SourceSpan>,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `kind` is never read
[INFO] [stdout]   --> src/vm/error.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 20 |     pub kind: RuntimeErrorKind,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rslox` (lib) due to 1 previous error; 22 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "63d4a0300879a53b566ef72af33ca058f314b92f1c5f89b2ce270f12267aad21", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "63d4a0300879a53b566ef72af33ca058f314b92f1c5f89b2ce270f12267aad21", kill_on_drop: false }`
[INFO] [stdout] 63d4a0300879a53b566ef72af33ca058f314b92f1c5f89b2ce270f12267aad21
