[INFO] fetching crate microcrates-bytes 0.4.8...
[INFO] testing microcrates-bytes-0.4.8 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate microcrates-bytes 0.4.8 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate microcrates-bytes 0.4.8
[INFO] finished tweaking crates.io crate microcrates-bytes 0.4.8
[INFO] tweaked toml for crates.io crate microcrates-bytes 0.4.8 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate microcrates-bytes 0.4.8 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 11 packages to latest compatible versions
[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] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 0f40d31031d6b03fe75c29476bd7e7e4d948c14f796d2181ad07ff03bc71550d
[INFO] running `Command { std: "docker" "start" "-a" "0f40d31031d6b03fe75c29476bd7e7e4d948c14f796d2181ad07ff03bc71550d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0f40d31031d6b03fe75c29476bd7e7e4d948c14f796d2181ad07ff03bc71550d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0f40d31031d6b03fe75c29476bd7e7e4d948c14f796d2181ad07ff03bc71550d", kill_on_drop: false }`
[INFO] [stdout] 0f40d31031d6b03fe75c29476bd7e7e4d948c14f796d2181ad07ff03bc71550d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 90d56fa20c62023570bb4316256ad19ae5a7a57628ffe7d77c47bd81f8a06454
[INFO] running `Command { std: "docker" "start" "-a" "90d56fa20c62023570bb4316256ad19ae5a7a57628ffe7d77c47bd81f8a06454", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr]    Compiling microcrates-bytes v0.4.8 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> src/lib.rs:74:34
[INFO] [stdout]    |
[INFO] [stdout] 74 | #![cfg_attr(feature = "nightly", feature(alloc, read_initializer, try_from))]
[INFO] [stdout]    |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/debug.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 17 |         try!(write!(fmt, "b\""));
[INFO] [stdout]    |         ^^^
[INFO] [stdout]    |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> src/lib.rs:71:9
[INFO] [stdout]    |
[INFO] [stdout] 71 | #![deny(warnings, missing_docs, missing_debug_implementations)]
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    = note: `#[warn(deprecated)]` implied by `#[warn(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/debug.rs:37:9
[INFO] [stdout]    |
[INFO] [stdout] 37 |         try!(write!(fmt, "\""));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/debug.rs:21:17
[INFO] [stdout]    |
[INFO] [stdout] 21 |                 try!(write!(fmt, "\\n"));
[INFO] [stdout]    |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/debug.rs:23:17
[INFO] [stdout]    |
[INFO] [stdout] 23 |                 try!(write!(fmt, "\\r"));
[INFO] [stdout]    |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/debug.rs:25:17
[INFO] [stdout]    |
[INFO] [stdout] 25 |                 try!(write!(fmt, "\\t"));
[INFO] [stdout]    |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/debug.rs:27:17
[INFO] [stdout]    |
[INFO] [stdout] 27 |                 try!(write!(fmt, "\\{}", c as char));
[INFO] [stdout]    |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/debug.rs:29:17
[INFO] [stdout]    |
[INFO] [stdout] 29 |                 try!(write!(fmt, "\\0"));
[INFO] [stdout]    |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/debug.rs:32:17
[INFO] [stdout]    |
[INFO] [stdout] 32 |                 try!(write!(fmt, "{}", c as char));
[INFO] [stdout]    |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/debug.rs:34:17
[INFO] [stdout]    |
[INFO] [stdout] 34 |                 try!(write!(fmt, "\\x{:02x}", c));
[INFO] [stdout]    |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `try_from` has been stable since 1.34.0 and no longer requires an attribute to enable
[INFO] [stdout]   --> src/lib.rs:74:67
[INFO] [stdout]    |
[INFO] [stdout] 74 | #![cfg_attr(feature = "nightly", feature(alloc, read_initializer, try_from))]
[INFO] [stdout]    |                                                                   ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(stable_features)]` implied by `#[warn(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `alloc` has been stable since 1.36.0 and no longer requires an attribute to enable
[INFO] [stdout]   --> src/lib.rs:74:42
[INFO] [stdout]    |
[INFO] [stdout] 74 | #![cfg_attr(feature = "nightly", feature(alloc, read_initializer, try_from))]
[INFO] [stdout]    |                                          ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0635]: unknown feature `read_initializer`
[INFO] [stdout]   --> src/lib.rs:74:49
[INFO] [stdout]    |
[INFO] [stdout] 74 | #![cfg_attr(feature = "nightly", feature(alloc, read_initializer, try_from))]
[INFO] [stdout]    |                                                 ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `core::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]     --> src/bytes.rs:1550:45
[INFO] [stdout]      |
[INFO] [stdout] 1550 |                 let mut inner: Inner = mem::uninitialized();
[INFO] [stdout]      |                                             ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `core::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]     --> src/bytes.rs:1736:45
[INFO] [stdout]      |
[INFO] [stdout] 1736 |                 let mut inner: Inner = mem::uninitialized();
[INFO] [stdout]      |                                             ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `core::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]     --> src/bytes.rs:2012:41
[INFO] [stdout]      |
[INFO] [stdout] 2012 |             let mut inner: Inner = mem::uninitialized();
[INFO] [stdout]      |                                         ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `core::sync::atomic::AtomicPtr::<T>::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]     --> src/bytes.rs:2082:39
[INFO] [stdout]      |
[INFO] [stdout] 2082 |                 let actual = self.arc.compare_and_swap(arc, shared, AcqRel);
[INFO] [stdout]      |                                       ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0554, E0635.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `microcrates-bytes` (lib) due to 2 previous errors; 15 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "90d56fa20c62023570bb4316256ad19ae5a7a57628ffe7d77c47bd81f8a06454", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "90d56fa20c62023570bb4316256ad19ae5a7a57628ffe7d77c47bd81f8a06454", kill_on_drop: false }`
[INFO] [stdout] 90d56fa20c62023570bb4316256ad19ae5a7a57628ffe7d77c47bd81f8a06454
