[INFO] fetching crate signaldock-protocol 2026.5.0...
[INFO] testing signaldock-protocol-2026.5.0 against 1.99.0-beta.8+cargoflags=--release for beta-release-1.100-2
[INFO] extracting crate signaldock-protocol 2026.5.0 into /workspace/builds/worker-5-tc1/source
[INFO] started tweaking crates.io crate signaldock-protocol 2026.5.0
[INFO] finished tweaking crates.io crate signaldock-protocol 2026.5.0
[INFO] tweaked toml for crates.io crate signaldock-protocol 2026.5.0 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate signaldock-protocol 2026.5.0 on toolchain 1.99.0-beta.8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.99.0-beta.8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate signaldock-protocol 2026.5.0 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" "+1.99.0-beta.8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded lafs-core v2026.5.105
[INFO] [stderr]   Downloaded signaldock-core v2026.5.0
[INFO] [stderr]   Downloaded jsonschema v0.28.3
[INFO] [stderr]   Downloaded referencing v0.28.3
[INFO] [stderr]   Downloaded cleo-conduit-core v2026.5.105
[INFO] [stderr]   Downloaded cant-core v2026.5.105
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] b5b9146be8e60b4c1ff1423fe00965e6f7b046dfa6b14b4048ac255ca7b449b8
[INFO] running `Command { std: "docker" "start" "b5b9146be8e60b4c1ff1423fe00965e6f7b046dfa6b14b4048ac255ca7b449b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b5b9146be8e60b4c1ff1423fe00965e6f7b046dfa6b14b4048ac255ca7b449b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "b5b9146be8e60b4c1ff1423fe00965e6f7b046dfa6b14b4048ac255ca7b449b8" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b5b9146be8e60b4c1ff1423fe00965e6f7b046dfa6b14b4048ac255ca7b449b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "b5b9146be8e60b4c1ff1423fe00965e6f7b046dfa6b14b4048ac255ca7b449b8" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "build" "--frozen" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stderr]    Compiling displaydoc v0.2.5
[INFO] [stderr]    Compiling yoke v0.8.2
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling futures-sink v0.3.32
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling tokio v1.52.3
[INFO] [stderr]    Compiling ahash v0.8.12
[INFO] [stderr]    Compiling serde_core v1.0.228
[INFO] [stderr]    Compiling uuid v1.23.1
[INFO] [stderr]    Compiling borrow-or-share v0.2.4
[INFO] [stderr]    Compiling bit-set v0.8.0
[INFO] [stderr]    Compiling regex-automata v0.4.14
[INFO] [stderr]    Compiling vsimd v0.8.0
[INFO] [stderr]    Compiling outref v0.5.2
[INFO] [stderr]    Compiling num-cmp v0.1.0
[INFO] [stderr]    Compiling bytecount v0.6.9
[INFO] [stderr]    Compiling futures-util v0.3.32
[INFO] [stderr]    Compiling futures-channel v0.3.32
[INFO] [stderr]    Compiling zerovec v0.11.6
[INFO] [stderr]    Compiling zerotrie v0.2.4
[INFO] [stderr]    Compiling uuid-simd v0.8.0
[INFO] [stderr]    Compiling fluent-uri v0.3.2
[INFO] [stderr]    Compiling serde_urlencoded v0.7.1
[INFO] [stderr]    Compiling email_address v0.2.9
[INFO] [stderr]    Compiling tinystr v0.8.3
[INFO] [stderr]    Compiling potential_utf v0.1.5
[INFO] [stderr]    Compiling num-integer v0.1.46
[INFO] [stderr]    Compiling num-complex v0.4.6
[INFO] [stderr]    Compiling chrono v0.4.44
[INFO] [stderr]    Compiling icu_collections v2.2.0
[INFO] [stderr]    Compiling icu_locale_core v2.2.0
[INFO] [stderr]    Compiling num-bigint v0.4.6
[INFO] [stderr]    Compiling num-iter v0.1.45
[INFO] [stderr]    Compiling referencing v0.28.3
[INFO] [stderr]    Compiling icu_provider v2.2.0
[INFO] [stderr]    Compiling icu_normalizer v2.2.0
[INFO] [stderr]    Compiling icu_properties v2.2.0
[INFO] [stderr]    Compiling hyper v1.9.0
[INFO] [stderr]    Compiling num-rational v0.4.2
[INFO] [stderr]    Compiling tower v0.5.3
[INFO] [stderr]    Compiling serde_json v1.0.150
[INFO] [stderr]    Compiling num v0.4.3
[INFO] [stderr]    Compiling fraction v0.15.4
[INFO] [stderr]    Compiling fancy-regex v0.14.0
[INFO] [stderr]    Compiling idna_adapter v1.2.2
[INFO] [stderr]    Compiling idna v1.1.0
[INFO] [stderr]    Compiling signaldock-core v2026.5.0
[INFO] [stderr]    Compiling hyper-util v0.1.20
[INFO] [stderr]    Compiling url v2.5.8
[INFO] [stderr]    Compiling cant-core v2026.5.105
[INFO] [stderr] warning: cant-core@2026.5.105: cant-core build.rs: rustfmt exited exit status: 1 (error: 'rustfmt' is not installed for the toolchain '1.99.0-beta.8-x86_64-unknown-linux-gnu'.
[INFO] [stderr] error: failed to run custom build command for `cant-core v2026.5.105`
[INFO] [stderr] note: To improve backtraces for build dependencies, set the CARGO_PROFILE_RELEASE_BUILD_OVERRIDE_DEBUG=true environment variable to enable debug information generation.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/release/build/cant-core-489b39aada8deff8/build-script-build` (exit status: 1)
[INFO] [stderr]   --- stdout
[INFO] [stderr]   cargo:rerun-if-changed=/opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/cant-core-2026.5.105/vendor/caamp/hook-mappings.json
[INFO] [stderr]   cargo:rerun-if-changed=build.rs
[INFO] [stderr]   cargo:warning=cant-core build.rs: rustfmt exited exit status: 1 (error: 'rustfmt' is not installed for the toolchain '1.99.0-beta.8-x86_64-unknown-linux-gnu'.
[INFO] [stderr]   help: run `rustup component add --toolchain 1.99.0-beta.8-x86_64-unknown-linux-gnu rustfmt` to install it); emitting unformatted events.rs
[INFO] [stderr] 
[INFO] [stderr]   --- stderr
[INFO] [stderr]   cargo:error=cant-core build.rs: failed to write /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/cant-core-2026.5.105/src/generated/events.rs: Read-only file system (os error 30)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "b5b9146be8e60b4c1ff1423fe00965e6f7b046dfa6b14b4048ac255ca7b449b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b5b9146be8e60b4c1ff1423fe00965e6f7b046dfa6b14b4048ac255ca7b449b8", kill_on_drop: false }`
[INFO] [stdout] b5b9146be8e60b4c1ff1423fe00965e6f7b046dfa6b14b4048ac255ca7b449b8
