[INFO] cloning repository https://github.com/queezle42/quasar-rs [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/queezle42/quasar-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fqueezle42%2Fquasar-rs", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fqueezle42%2Fquasar-rs'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 7f37abbf356c1c8b207b54698233c1e29dd4c056 [INFO] testing queezle42/quasar-rs against beta-2025-10-28 for beta-1.92-2 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fqueezle42%2Fquasar-rs" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/queezle42/quasar-rs [INFO] finished tweaking git repo https://github.com/queezle42/quasar-rs [INFO] tweaked toml for git repo https://github.com/queezle42/quasar-rs written to /workspace/builds/worker-2-tc2/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/queezle42/quasar-rs on toolchain beta-2025-10-28 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-10-28" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/queezle42/quasar-rs 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-2025-10-28" "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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 4dcfd737af484a116ba350c5fe3c628ec9989bb87372ad20ad743b892bfc1c70 [INFO] running `Command { std: "docker" "start" "-a" "4dcfd737af484a116ba350c5fe3c628ec9989bb87372ad20ad743b892bfc1c70", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "4dcfd737af484a116ba350c5fe3c628ec9989bb87372ad20ad743b892bfc1c70", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "4dcfd737af484a116ba350c5fe3c628ec9989bb87372ad20ad743b892bfc1c70", kill_on_drop: false }` [INFO] [stdout] 4dcfd737af484a116ba350c5fe3c628ec9989bb87372ad20ad743b892bfc1c70 [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=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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] c595adfcef0462add02aff8cb2acf4c0b487ceaf4c3c749dd09f2a972ab2a171 [INFO] running `Command { std: "docker" "start" "-a" "c595adfcef0462add02aff8cb2acf4c0b487ceaf4c3c749dd09f2a972ab2a171", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.86 [INFO] [stderr] Compiling quote v1.0.37 [INFO] [stderr] Compiling syn v2.0.77 [INFO] [stderr] Compiling tokio-macros v2.4.0 [INFO] [stderr] Compiling tokio v1.40.0 [INFO] [stderr] Compiling quasar-observable v0.0.0 (/opt/rustwide/workdir/quasar-observable) [INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel [INFO] [stdout] --> quasar-observable/src/lib.rs:1:1 [INFO] [stdout] | [INFO] [stdout] 1 | #![feature(associated_type_defaults)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel [INFO] [stdout] --> quasar-observable/src/lib.rs:2:1 [INFO] [stdout] | [INFO] [stdout] 2 | #![feature(never_type)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `state` [INFO] [stdout] --> quasar-observable/src/share.rs:236:42 [INFO] [stdout] | [INFO] [stdout] 236 | fn reconfigure(self: &Arc>, state: &mut State) { [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_state` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `e` [INFO] [stdout] --> quasar-observable/src/lib.rs:728:26 [INFO] [stdout] | [INFO] [stdout] 728 | Some(Err(e)) => self.cache = None, [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_e` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `observer` [INFO] [stdout] --> quasar-observable/src/lib.rs:938:28 [INFO] [stdout] | [INFO] [stdout] 938 | fn attach

(self, observer: P, selector: Selector) -> AttachedObservable [INFO] [stdout] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_observer` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `selector` [INFO] [stdout] --> quasar-observable/src/lib.rs:938:41 [INFO] [stdout] | [INFO] [stdout] 938 | fn attach

(self, observer: P, selector: Selector) -> AttachedObservable [INFO] [stdout] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_selector` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `observer` [INFO] [stdout] --> quasar-observable/src/lib.rs:947:13 [INFO] [stdout] | [INFO] [stdout] 947 | observer: ObserverBox, [INFO] [stdout] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_observer` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `selector` [INFO] [stdout] --> quasar-observable/src/lib.rs:948:13 [INFO] [stdout] | [INFO] [stdout] 948 | selector: Selector, [INFO] [stdout] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_selector` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0554`. [INFO] [stdout] [INFO] [stderr] error: could not compile `quasar-observable` (lib) due to 2 previous errors; 6 warnings emitted [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] running `Command { std: "docker" "inspect" "c595adfcef0462add02aff8cb2acf4c0b487ceaf4c3c749dd09f2a972ab2a171", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c595adfcef0462add02aff8cb2acf4c0b487ceaf4c3c749dd09f2a972ab2a171", kill_on_drop: false }` [INFO] [stdout] c595adfcef0462add02aff8cb2acf4c0b487ceaf4c3c749dd09f2a972ab2a171