[INFO] fetching crate penumbra-sdk-view 2.0.6...
[INFO] testing penumbra-sdk-view-2.0.6 against try#dec9417b8611e34e787a3e4c37686b5131f9e5c5 for pr-154210-2
[INFO] extracting crate penumbra-sdk-view 2.0.6 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate penumbra-sdk-view 2.0.6
[INFO] finished tweaking crates.io crate penumbra-sdk-view 2.0.6
[INFO] tweaked toml for crates.io crate penumbra-sdk-view 2.0.6 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate penumbra-sdk-view 2.0.6 on toolchain dec9417b8611e34e787a3e4c37686b5131f9e5c5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "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" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 482 packages to latest compatible versions
[INFO] [stderr]       Adding ark-std v0.4.0 (available: v0.5.0)
[INFO] [stderr]       Adding cnidarium v0.83.0 (available: v0.84.0)
[INFO] [stderr]       Adding digest v0.9.0 (available: v0.11.2)
[INFO] [stderr]       Adding generic-array v0.14.7 (available: v0.14.9)
[INFO] [stderr]       Adding ibc-types v0.15.1 (available: v0.16.0)
[INFO] [stderr]       Adding pbjson-types v0.7.0 (available: v0.9.0)
[INFO] [stderr]       Adding prost v0.13.5 (available: v0.14.3)
[INFO] [stderr]       Adding r2d2_sqlite v0.25.0 (available: v0.33.0)
[INFO] [stderr]       Adding rand v0.8.6 (available: v0.10.1)
[INFO] [stderr]       Adding rand_core v0.6.4 (available: v0.10.1)
[INFO] [stderr]       Adding sha2 v0.10.9 (available: v0.11.0)
[INFO] [stderr]       Adding tonic v0.12.3 (available: v0.14.5)
[INFO] [stderr]       Adding universal-hash v0.4.0 (available: v0.4.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 52fd7911d0217c92ec3c2fb25e2a737151c9ee32d6b5f92425e215d12d2f0adf
[INFO] running `Command { std: "docker" "start" "-a" "52fd7911d0217c92ec3c2fb25e2a737151c9ee32d6b5f92425e215d12d2f0adf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "52fd7911d0217c92ec3c2fb25e2a737151c9ee32d6b5f92425e215d12d2f0adf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "52fd7911d0217c92ec3c2fb25e2a737151c9ee32d6b5f92425e215d12d2f0adf", kill_on_drop: false }`
[INFO] [stdout] 52fd7911d0217c92ec3c2fb25e2a737151c9ee32d6b5f92425e215d12d2f0adf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 66f62cf0fcde48822849536d227b7f51f1e502ee29afdc972b686614969c57e4
[INFO] running `Command { std: "docker" "start" "-a" "66f62cf0fcde48822849536d227b7f51f1e502ee29afdc972b686614969c57e4", kill_on_drop: false }`
[INFO] [stderr]    Compiling subtle v2.6.1
[INFO] [stderr]    Compiling serde_core v1.0.228
[INFO] [stderr]    Compiling zerocopy v0.8.48
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]    Compiling tracing-core v0.1.36
[INFO] [stderr]    Compiling smallvec v1.15.1
[INFO] [stderr]    Compiling itertools v0.14.0
[INFO] [stderr]    Compiling getrandom v0.2.17
[INFO] [stderr]    Compiling jobserver v0.1.34
[INFO] [stderr]    Compiling zeroize_derive v1.4.3
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling tracing-attributes v0.1.31
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling hashbrown v0.17.0
[INFO] [stderr]    Compiling futures-macro v0.3.32
[INFO] [stderr]    Compiling tokio-macros v2.7.0
[INFO] [stderr]    Compiling byteorder v1.5.0
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling cc v1.2.60
[INFO] [stderr]    Compiling parking_lot_core v0.9.12
[INFO] [stderr]    Compiling displaydoc v0.2.5
[INFO] [stderr]    Compiling rayon v1.12.0
[INFO] [stderr]    Compiling parking_lot v0.12.5
[INFO] [stderr]    Compiling zeroize v1.8.2
[INFO] [stderr]    Compiling itertools v0.10.5
[INFO] [stderr]    Compiling futures-util v0.3.32
[INFO] [stderr]    Compiling indexmap v2.14.0
[INFO] [stderr]    Compiling num-conv v0.2.1
[INFO] [stderr]    Compiling time-macros v0.2.27
[INFO] [stderr]    Compiling num-integer v0.1.46
[INFO] [stderr]    Compiling rustls-pki-types v1.14.0
[INFO] [stderr]    Compiling subtle-encoding v0.5.1
[INFO] [stderr]    Compiling num-bigint v0.4.6
[INFO] [stderr]    Compiling crypto-common v0.1.7
[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/dec9417b8611e34e787a3e4c37686b5131f9e5c5/bin/rustc --crate-name syn --edition=2018 /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/syn-1.0.109/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="full"' --cfg 'feature="parsing"' --cfg 'feature="printing"' --cfg 'feature="proc-macro"' --cfg 'feature="quote"' --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", "quote", "test", "visit", "visit-mut"))' -C metadata=0e96cba7d83c9650 -C extra-filename=-6467d574455fb81c --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-d4cb564e807a9cd7.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-aa2c5b8519914b46.rmeta --extern unicode_ident=/opt/rustwide/target/debug/deps/libunicode_ident-8c98a1a0e58216a9.rmeta --cap-lints allow --cap-lints=forbid` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "66f62cf0fcde48822849536d227b7f51f1e502ee29afdc972b686614969c57e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "66f62cf0fcde48822849536d227b7f51f1e502ee29afdc972b686614969c57e4", kill_on_drop: false }`
[INFO] [stdout] 66f62cf0fcde48822849536d227b7f51f1e502ee29afdc972b686614969c57e4