[INFO] fetching crate memorable 0.1.1...
[INFO] testing memorable-0.1.1 against beta-2025-10-28 for beta-1.92-2
[INFO] extracting crate memorable 0.1.1 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate memorable 0.1.1
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate memorable 0.1.1
[INFO] tweaked toml for crates.io crate memorable 0.1.1 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate memorable 0.1.1 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 crates.io crate memorable 0.1.1 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] a69682f72d4f91875a01e027d96206fdd993ab13268162f16fc925f96e338fae
[INFO] running `Command { std: "docker" "start" "-a" "a69682f72d4f91875a01e027d96206fdd993ab13268162f16fc925f96e338fae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a69682f72d4f91875a01e027d96206fdd993ab13268162f16fc925f96e338fae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a69682f72d4f91875a01e027d96206fdd993ab13268162f16fc925f96e338fae", kill_on_drop: false }`
[INFO] [stdout] a69682f72d4f91875a01e027d96206fdd993ab13268162f16fc925f96e338fae
[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] 505b6b482a7526f75b53187894ff707daa056da66dee572749cfb76f74c4f205
[INFO] running `Command { std: "docker" "start" "-a" "505b6b482a7526f75b53187894ff707daa056da66dee572749cfb76f74c4f205", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.92
[INFO] [stderr]    Compiling libc v0.2.164
[INFO] [stderr]    Compiling prettyplease v0.1.25
[INFO] [stderr]    Compiling rustix v0.38.41
[INFO] [stderr]    Compiling crc32fast v1.4.2
[INFO] [stderr]    Compiling ref-cast v1.0.23
[INFO] [stderr]    Compiling among v0.1.7
[INFO] [stderr]    Compiling arbitrary-int v1.2.7
[INFO] [stderr]    Compiling cheap-clone v0.2.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.18
[INFO] [stderr]    Compiling dbutils v0.11.0
[INFO] [stderr]    Compiling crossbeam-skiplist-pr1132 v0.1.9
[INFO] [stderr]    Compiling crossbeam-skiplist-mvcc v0.2.2
[INFO] [stderr]    Compiling getrandom v0.2.15
[INFO] [stderr]    Compiling memmap2 v0.9.5
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling quote v1.0.37
[INFO] [stderr]    Compiling syn v2.0.89
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling fs4 v0.11.1
[INFO] [stderr]    Compiling rarena-allocator v0.4.20
[INFO] [stderr]    Compiling zerocopy-derive v0.7.35
[INFO] [stderr]    Compiling ref-cast-impl v1.0.23
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/rarena-allocator-0.4.20/src/memory.rs:707:46
[INFO] [stdout]     |
[INFO] [stdout] 704 |   pub(crate) fn try_lock_shared(&self) -> std::io::Result<()> {
[INFO] [stdout]     |                                           ------------------- expected `Result<(), std::io::Error>` because of return type
[INFO] [stdout] ...
[INFO] [stdout] 707 |       MemoryBackend::MmapMut { file, .. } => file.try_lock_shared(),
[INFO] [stdout]     |                                              ^^^^^^^^^^^^^^^^^^^^^^ expected `Result<(), Error>`, found `Result<(), TryLockError>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected enum `Result<_, std::io::Error>`
[INFO] [stdout]                found enum `Result<_, std::fs::TryLockError>`
[INFO] [stdout] help: use `?` to coerce and return an appropriate `Err`, and wrap the resulting value in `Ok` so the expression remains of type `Result`
[INFO] [stdout]     |
[INFO] [stdout] 707 |       MemoryBackend::MmapMut { file, .. } => Ok(file.try_lock_shared()?),
[INFO] [stdout]     |                                              +++                      ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling zerocopy v0.7.35
[INFO] [stdout] For more information about this error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rarena-allocator` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "505b6b482a7526f75b53187894ff707daa056da66dee572749cfb76f74c4f205", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "505b6b482a7526f75b53187894ff707daa056da66dee572749cfb76f74c4f205", kill_on_drop: false }`
[INFO] [stdout] 505b6b482a7526f75b53187894ff707daa056da66dee572749cfb76f74c4f205
