[INFO] fetching crate rustic_core 0.8.0...
[INFO] testing rustic_core-0.8.0 against beta-2025-10-28 for beta-1.92-2
[INFO] extracting crate rustic_core 0.8.0 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate rustic_core 0.8.0
[INFO] finished tweaking crates.io crate rustic_core 0.8.0
[INFO] tweaked toml for crates.io crate rustic_core 0.8.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate rustic_core 0.8.0 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 rustic_core 0.8.0 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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] e68eb939e767ee3e1be740b01f2e506a41ae1835d6964058c28040e633a062ac
[INFO] running `Command { std: "docker" "start" "-a" "e68eb939e767ee3e1be740b01f2e506a41ae1835d6964058c28040e633a062ac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e68eb939e767ee3e1be740b01f2e506a41ae1835d6964058c28040e633a062ac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e68eb939e767ee3e1be740b01f2e506a41ae1835d6964058c28040e633a062ac", kill_on_drop: false }`
[INFO] [stdout] e68eb939e767ee3e1be740b01f2e506a41ae1835d6964058c28040e633a062ac
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 51fbaea56415a8aa823ba8ea910a3d9e4cf8bfd47e61e72da9ec669da3bd742e
[INFO] running `Command { std: "docker" "start" "-a" "51fbaea56415a8aa823ba8ea910a3d9e4cf8bfd47e61e72da9ec669da3bd742e", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.101
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling rustix v1.1.2
[INFO] [stderr]    Compiling linux-raw-sys v0.11.0
[INFO] [stderr]    Compiling owo-colors v4.2.2
[INFO] [stderr]    Compiling aho-corasick v1.1.3
[INFO] [stderr]    Compiling getrandom v0.3.3
[INFO] [stderr]    Compiling getrandom v0.2.16
[INFO] [stderr]    Compiling inout v0.1.4
[INFO] [stderr]    Compiling digest v0.10.7
[INFO] [stderr]    Compiling sha2-asm v0.6.4
[INFO] [stderr]    Compiling serde_json v1.0.143
[INFO] [stderr]    Compiling binrw_derive v0.15.0
[INFO] [stderr]    Compiling regex-syntax v0.8.6
[INFO] [stderr]    Compiling parking_lot_core v0.9.11
[INFO] [stderr]    Compiling nix v0.30.1
[INFO] [stderr]    Compiling cipher v0.4.4
[INFO] [stderr]    Compiling zstd-sys v2.0.16+zstd.1.5.7
[INFO] [stderr]    Compiling rand_core v0.9.3
[INFO] [stderr]    Compiling zstd-safe v7.2.4
[INFO] [stderr]    Compiling universal-hash v0.5.1
[INFO] [stderr]    Compiling hmac v0.12.1
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling crossbeam-queue v0.3.12
[INFO] [stderr]    Compiling bstr v1.12.0
[INFO] [stderr]    Compiling base64ct v1.8.0
[INFO] [stderr]    Compiling hashbrown v0.15.5
[INFO] [stderr]    Compiling binrw v0.15.0
[INFO] [stderr]    Compiling either v1.15.0
[INFO] [stderr]    Compiling iana-time-zone v0.1.63
[INFO] [stderr]    Compiling sha2 v0.10.9
[INFO] [stderr]    Compiling ctr v0.9.2
[INFO] [stderr]    Compiling aes v0.8.4
[INFO] [stderr]    Compiling salsa20 v0.10.2
[INFO] [stderr]    Compiling crossbeam v0.8.4
[INFO] [stderr]    Compiling password-hash v0.5.0
[INFO] [stderr]    Compiling dirs-sys v0.5.0
[INFO] [stderr]    Compiling poly1305 v0.8.0
[INFO] [stderr]    Compiling rand_chacha v0.9.0
[INFO] [stderr]    Compiling ordered-float v2.10.1
[INFO] [stderr]    Compiling pbkdf2 v0.12.2
[INFO] [stderr]    Compiling ahash v0.8.12
[INFO] [stderr]    Compiling parking_lot v0.12.4
[INFO] [stderr]    Compiling aead v0.5.2
[INFO] [stderr]    Compiling bytemuck v1.23.2
[INFO] [stderr]    Compiling base64 v0.22.1
[INFO] [stderr]    Compiling cached_proc_macro_types v0.1.1
[INFO] [stderr]    Compiling zeroize v1.8.1
[INFO] [stderr]    Compiling rand v0.9.2
[INFO] [stderr]    Compiling pariter v0.5.1
[INFO] [stderr]    Compiling quick_cache v0.6.16
[INFO] [stderr]    Compiling rayon v1.11.0
[INFO] [stderr]    Compiling scrypt v0.11.0
[INFO] [stderr]    Compiling zstd v0.13.3
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]    Compiling runtime-format v0.1.3
[INFO] [stderr]    Compiling aes256ctr_poly1305aes v0.2.1
[INFO] [stderr]    Compiling dirs v6.0.0
[INFO] [stderr]    Compiling integer-sqrt v0.1.5
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]    Compiling filetime v0.2.26
[INFO] [stderr]    Compiling path-dedot v3.1.1
[INFO] [stderr]    Compiling dunce v1.0.5
[INFO] [stderr]    Compiling bytesize v2.0.1
[INFO] [stderr]    Compiling humantime v2.3.0
[INFO] [stderr]    Compiling ecow v0.2.6
[INFO] [stderr]    Compiling rustic_cdc v0.3.1
[INFO] [stderr]    Compiling regex-automata v0.4.10
[INFO] [stderr]    Compiling tempfile v3.22.0
[INFO] [stderr]    Compiling gethostname v1.0.2
[INFO] [stderr]    Compiling xattr v1.5.1
[INFO] [stderr]    Compiling cachedir v0.3.1
[INFO] [stderr]    Compiling globset v0.4.16
[INFO] [stderr]    Compiling ignore v0.4.23
[INFO] [stderr]    Compiling darling_core v0.20.11
[INFO] [stderr]    Compiling darling_core v0.21.3
[INFO] [stderr]    Compiling serde_derive v1.0.219
[INFO] [stderr]    Compiling thiserror-impl v2.0.16
[INFO] [stderr]    Compiling strum_macros v0.27.2
[INFO] [stderr]    Compiling derive_more-impl v2.0.1
[INFO] [stderr]    Compiling enum-map-derive v0.17.0
[INFO] [stderr]    Compiling displaydoc v0.2.5
[INFO] [stderr]    Compiling enum-map v2.7.3
[INFO] [stderr]    Compiling thiserror v2.0.16
[INFO] [stderr]    Compiling darling_macro v0.20.11
[INFO] [stderr]    Compiling darling v0.20.11
[INFO] [stderr]    Compiling strum v0.27.2
[INFO] [stderr]    Compiling cached_proc_macro v0.25.0
[INFO] [stderr]    Compiling serde_with_macros v3.14.0
[INFO] [stderr]    Compiling derive_setters v0.1.8
[INFO] [stderr]    Compiling darling_macro v0.21.3
[INFO] [stderr]    Compiling derive_more v2.0.1
[INFO] [stderr]    Compiling darling v0.21.3
[INFO] [stderr]    Compiling enumset_derive v0.14.0
[INFO] [stderr]    Compiling cached v0.56.0
[INFO] [stderr]    Compiling serde-value v0.7.0
[INFO] [stderr]    Compiling chrono v0.4.42
[INFO] [stderr]    Compiling enumset v1.1.10
[INFO] [stderr]    Compiling serde_with v3.14.0
[INFO] [stderr]    Compiling hex v0.4.3
[INFO] [stderr]    Compiling serde-aux v4.7.0
[INFO] [stderr]    Compiling rustic_core v0.8.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/error.rs:176:24
[INFO] [stdout]     |
[INFO] [stdout] 176 |     source: Option<Box<(dyn std::error::Error + Send + Sync)>>,
[INFO] [stdout]     |                        ^                                   ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-W unused-parens`
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 176 -     source: Option<Box<(dyn std::error::Error + Send + Sync)>>,
[INFO] [stdout] 176 +     source: Option<Box<dyn std::error::Error + Send + Sync>>,
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/error.rs:349:31
[INFO] [stdout]     |
[INFO] [stdout] 349 |         source: impl Into<Box<(dyn std::error::Error + Send + Sync)>>,
[INFO] [stdout]     |                               ^                                   ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 349 -         source: impl Into<Box<(dyn std::error::Error + Send + Sync)>>,
[INFO] [stdout] 349 +         source: impl Into<Box<dyn std::error::Error + Send + Sync>>,
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/error.rs:448:30
[INFO] [stdout]     |
[INFO] [stdout] 448 |         value: impl Into<Box<(dyn std::error::Error + Send + Sync)>>,
[INFO] [stdout]     |                              ^                                   ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 448 -         value: impl Into<Box<(dyn std::error::Error + Send + Sync)>>,
[INFO] [stdout] 448 +         value: impl Into<Box<dyn std::error::Error + Send + Sync>>,
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `chars` is never read
[INFO] [stdout]   --> src/backend/node.rs:40:9
[INFO] [stdout]    |
[INFO] [stdout] 40 |         chars: std::str::Chars<'a>,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `-W unused-assignments` implied by `-W unused`
[INFO] [stdout]    = help: to override `-W unused` add `#[allow(unused_assignments)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `file_name` is never read
[INFO] [stdout]   --> src/backend/node.rs:46:9
[INFO] [stdout]    |
[INFO] [stdout] 46 |         file_name: String,
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `unicode` is never read
[INFO] [stdout]   --> src/backend/node.rs:48:9
[INFO] [stdout]    |
[INFO] [stdout] 48 |         unicode: u32,
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `chars` is never read
[INFO] [stdout]   --> src/backend/node.rs:50:9
[INFO] [stdout]    |
[INFO] [stdout] 50 |         chars: std::str::Chars<'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 `chars` is never read
[INFO] [stdout]   --> src/backend/node.rs:58:9
[INFO] [stdout]    |
[INFO] [stdout] 58 |         chars: std::str::Chars<'a>,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 51.98s
[INFO] running `Command { std: "docker" "inspect" "51fbaea56415a8aa823ba8ea910a3d9e4cf8bfd47e61e72da9ec669da3bd742e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "51fbaea56415a8aa823ba8ea910a3d9e4cf8bfd47e61e72da9ec669da3bd742e", kill_on_drop: false }`
[INFO] [stdout] 51fbaea56415a8aa823ba8ea910a3d9e4cf8bfd47e61e72da9ec669da3bd742e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b793d356fbf894a810fbfcf12d4c893bd25c86d94f89bc87dd698834d1f5d529
[INFO] running `Command { std: "docker" "start" "-a" "b793d356fbf894a810fbfcf12d4c893bd25c86d94f89bc87dd698834d1f5d529", kill_on_drop: false }`
[INFO] [stderr]    Compiling scopeguard v1.2.0
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]    Compiling parking_lot_core v0.9.11
[INFO] [stderr]    Compiling block-padding v0.3.3
[INFO] [stderr]    Compiling digest v0.10.7
[INFO] [stderr]    Compiling serde_json v1.0.143
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.18
[INFO] [stderr]    Compiling ring v0.17.14
[INFO] [stderr]    Compiling winnow v0.7.13
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[INFO] [stderr]    Compiling semver v1.0.26
[INFO] [stderr]    Compiling hashbrown v0.14.5
[INFO] [stderr]    Compiling rand_chacha v0.3.1
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[INFO] [stderr]    Compiling getrandom v0.2.16
[INFO] [stderr]    Compiling lock_api v0.4.13
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[INFO] [stderr]    Compiling time v0.3.43
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[INFO] [stderr]    Compiling hmac v0.12.1
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[INFO] [stderr]    Compiling parking_lot v0.12.4
[INFO] [stderr]    Compiling salsa20 v0.10.2
[INFO] [stderr]    Compiling pbkdf2 v0.12.2
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[INFO] [stderr]    Compiling async-lock v3.4.1
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[INFO] [stderr]    Compiling itertools v0.13.0
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[INFO] [stderr]    Compiling mockall_derive v0.13.1
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[INFO] [stderr]    Compiling toml_writer v1.0.2
[INFO] [stderr]    Compiling fragile v2.0.1
[INFO] [stderr]    Compiling typed-path v0.9.3
[INFO] [stderr]    Compiling synstructure v0.13.2
[INFO] [stderr]    Compiling darling_core v0.20.11
[INFO] [stderr] error: could not compile `syn` (lib)
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/beta-2025-10-28-x86_64-unknown-linux-gnu/bin/rustc --crate-name syn --edition=2021 /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/syn-2.0.106/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no --cfg 'feature="clone-impls"' --cfg 'feature="default"' --cfg 'feature="derive"' --cfg 'feature="extra-traits"' --cfg 'feature="fold"' --cfg 'feature="full"' --cfg 'feature="parsing"' --cfg 'feature="printing"' --cfg 'feature="proc-macro"' --cfg 'feature="visit"' --cfg 'feature="visit-mut"' --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values("clone-impls", "default", "derive", "extra-traits", "fold", "full", "parsing", "printing", "proc-macro", "test", "visit", "visit-mut"))' -C metadata=c85eadbe9641ffb8 -C extra-filename=-2956caddf6410761 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-ef39450b4cfdc346.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-bae0ecbc3d3feee8.rmeta --extern unicode_ident=/opt/rustwide/target/debug/deps/libunicode_ident-9ad4622e9362cad2.rmeta --cap-lints allow --cap-lints=warn` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "b793d356fbf894a810fbfcf12d4c893bd25c86d94f89bc87dd698834d1f5d529", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b793d356fbf894a810fbfcf12d4c893bd25c86d94f89bc87dd698834d1f5d529", kill_on_drop: false }`
[INFO] [stdout] b793d356fbf894a810fbfcf12d4c893bd25c86d94f89bc87dd698834d1f5d529
