[INFO] fetching crate tailed 0.0.1... [INFO] testing tailed-0.0.1 against beta-2025-09-21 for beta-1.91-3 [INFO] extracting crate tailed 0.0.1 into /workspace/builds/worker-3-tc2/source [INFO] started tweaking crates.io crate tailed 0.0.1 [INFO] finished tweaking crates.io crate tailed 0.0.1 [INFO] tweaked toml for crates.io crate tailed 0.0.1 written to /workspace/builds/worker-3-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate tailed 0.0.1 on toolchain beta-2025-09-21 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Locking 1 package to latest compatible version [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] ad19211a7c07a6826fb502c108fe04cc3b07e2b6fbaf1be234372fed0a274025 [INFO] running `Command { std: "docker" "start" "-a" "ad19211a7c07a6826fb502c108fe04cc3b07e2b6fbaf1be234372fed0a274025", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "ad19211a7c07a6826fb502c108fe04cc3b07e2b6fbaf1be234372fed0a274025", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ad19211a7c07a6826fb502c108fe04cc3b07e2b6fbaf1be234372fed0a274025", kill_on_drop: false }` [INFO] [stdout] ad19211a7c07a6826fb502c108fe04cc3b07e2b6fbaf1be234372fed0a274025 [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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 5e2d043fbb68af52f654160260f75e4f173b3ba7b89d2e97bbdd64a94ab5da57 [INFO] running `Command { std: "docker" "start" "-a" "5e2d043fbb68af52f654160260f75e4f173b3ba7b89d2e97bbdd64a94ab5da57", kill_on_drop: false }` [INFO] [stderr] Compiling tailed v0.0.1 (/opt/rustwide/workdir) [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.09s [INFO] running `Command { std: "docker" "inspect" "5e2d043fbb68af52f654160260f75e4f173b3ba7b89d2e97bbdd64a94ab5da57", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "5e2d043fbb68af52f654160260f75e4f173b3ba7b89d2e97bbdd64a94ab5da57", kill_on_drop: false }` [INFO] [stdout] 5e2d043fbb68af52f654160260f75e4f173b3ba7b89d2e97bbdd64a94ab5da57 [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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 13c828a3594d75ed996257f94019103a6f3ec4fa54b7559f3b5d3b91e2a42f18 [INFO] running `Command { std: "docker" "start" "-a" "13c828a3594d75ed996257f94019103a6f3ec4fa54b7559f3b5d3b91e2a42f18", kill_on_drop: false }` [INFO] [stderr] Compiling tailed v0.0.1 (/opt/rustwide/workdir) [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.26s [INFO] running `Command { std: "docker" "inspect" "13c828a3594d75ed996257f94019103a6f3ec4fa54b7559f3b5d3b91e2a42f18", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "13c828a3594d75ed996257f94019103a6f3ec4fa54b7559f3b5d3b91e2a42f18", kill_on_drop: false }` [INFO] [stdout] 13c828a3594d75ed996257f94019103a6f3ec4fa54b7559f3b5d3b91e2a42f18 [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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 9f2af6f8bfb77ec224bbcf2336565cb3612962e07b183d96c9fa17432db25bbd [INFO] running `Command { std: "docker" "start" "-a" "9f2af6f8bfb77ec224bbcf2336565cb3612962e07b183d96c9fa17432db25bbd", kill_on_drop: false }` [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s [INFO] [stderr] Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/tailed-a250449fa1ba1a63) [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] [stderr] Doc-tests tailed [INFO] [stdout] [INFO] [stdout] running 5 tests [INFO] [stdout] test src/lib.rs - Tailed,[u8]>::from_bytes (line 110) ... FAILED [INFO] [stdout] test src/lib.rs - Tailed,[u8]>::from_bytes_with_length (line 149) ... FAILED [INFO] [stdout] test src/lib.rs - Tailed,[u8]>::assume_init (line 234) ... ok [INFO] [stdout] test src/lib.rs - Tailed::from_raw_parts_mut (line 84) ... ok [INFO] [stdout] test src/lib.rs - Tailed::from_raw_parts (line 57) ... ok [INFO] [stdout] [INFO] [stdout] failures: [INFO] [stdout] [INFO] [stdout] ---- src/lib.rs - Tailed,[u8]>::from_bytes (line 110) stdout ---- [INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel [INFO] [stdout] --> src/lib.rs:109:1 [INFO] [stdout] | [INFO] [stdout] 2 | #![feature(maybe_uninit_extra)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] warning: the feature `maybe_uninit_extra` has been stable since 1.60.0 and no longer requires an attribute to enable [INFO] [stdout] --> src/lib.rs:109:12 [INFO] [stdout] | [INFO] [stdout] 2 | #![feature(maybe_uninit_extra)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(stable_features)]` on by default [INFO] [stdout] [INFO] [stdout] error[E0599]: no method named `read` found for union `MaybeUninit` in the current scope [INFO] [stdout] --> src/lib.rs:124:33 [INFO] [stdout] | [INFO] [stdout] 17 | assert_eq!(unsafe { tailed.head.read() }, Header {a: 0x0101, b: 0x02 }); [INFO] [stdout] | ^^^^ method not found in `MaybeUninit
` [INFO] [stdout] [INFO] [stdout] error: aborting due to 2 previous errors; 1 warning emitted [INFO] [stdout] [INFO] [stdout] Some errors have detailed explanations: E0554, E0599. [INFO] [stdout] For more information about an error, try `rustc --explain E0554`. [INFO] [stdout] Couldn't compile the test. [INFO] [stdout] ---- src/lib.rs - Tailed,[u8]>::from_bytes_with_length (line 149) stdout ---- [INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel [INFO] [stdout] --> src/lib.rs:148:1 [INFO] [stdout] | [INFO] [stdout] 2 | #![feature(maybe_uninit_extra)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] warning: the feature `maybe_uninit_extra` has been stable since 1.60.0 and no longer requires an attribute to enable [INFO] [stdout] --> src/lib.rs:148:12 [INFO] [stdout] | [INFO] [stdout] 2 | #![feature(maybe_uninit_extra)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(stable_features)]` on by default [INFO] [stdout] [INFO] [stdout] error[E0599]: no method named `read` found for union `MaybeUninit` in the current scope [INFO] [stdout] --> src/lib.rs:163:33 [INFO] [stdout] | [INFO] [stdout] 17 | assert_eq!(unsafe { tailed.head.read() }, Header {a: 0x0101, b: 0x02 }); [INFO] [stdout] | ^^^^ method not found in `MaybeUninit
` [INFO] [stdout] [INFO] [stdout] error: aborting due to 2 previous errors; 1 warning emitted [INFO] [stdout] [INFO] [stdout] Some errors have detailed explanations: E0554, E0599. [INFO] [stdout] For more information about an error, try `rustc --explain E0554`. [INFO] [stdout] Couldn't compile the test. [INFO] [stdout] [INFO] [stdout] failures: [INFO] [stdout] src/lib.rs - Tailed,[u8]>::from_bytes (line 110) [INFO] [stdout] src/lib.rs - Tailed,[u8]>::from_bytes_with_length (line 149) [INFO] [stdout] [INFO] [stdout] test result: FAILED. 3 passed; 2 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.33s [INFO] [stdout] [INFO] [stderr] error: doctest failed, to rerun pass `--doc` [INFO] running `Command { std: "docker" "inspect" "9f2af6f8bfb77ec224bbcf2336565cb3612962e07b183d96c9fa17432db25bbd", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "9f2af6f8bfb77ec224bbcf2336565cb3612962e07b183d96c9fa17432db25bbd", kill_on_drop: false }` [INFO] [stdout] 9f2af6f8bfb77ec224bbcf2336565cb3612962e07b183d96c9fa17432db25bbd