[INFO] fetching crate astarte-message-hub 0.6.1...
[INFO] checking astarte-message-hub-0.6.1 against try#4d98531622e1718ae0bc3c7a1ab9cd8938428452+rustflags=-Dtail_expr_drop_order for pr-129604
[INFO] extracting crate astarte-message-hub 0.6.1 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate astarte-message-hub 0.6.1 on toolchain 4d98531622e1718ae0bc3c7a1ab9cd8938428452
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4d98531622e1718ae0bc3c7a1ab9cd8938428452" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-4-tc2/source/.cargo/config.toml
[INFO] started tweaking crates.io crate astarte-message-hub 0.6.1
[INFO] finished tweaking crates.io crate astarte-message-hub 0.6.1
[INFO] tweaked toml for crates.io crate astarte-message-hub 0.6.1 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate crates.io crate astarte-message-hub 0.6.1 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" "+4d98531622e1718ae0bc3c7a1ab9cd8938428452" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+4d98531622e1718ae0bc3c7a1ab9cd8938428452" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b0f50834da5348ea2e47780cf33e495b53f72e0fc75e4e1844605c2c1ee4cd63
[INFO] running `Command { std: "docker" "start" "-a" "b0f50834da5348ea2e47780cf33e495b53f72e0fc75e4e1844605c2c1ee4cd63", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b0f50834da5348ea2e47780cf33e495b53f72e0fc75e4e1844605c2c1ee4cd63", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b0f50834da5348ea2e47780cf33e495b53f72e0fc75e4e1844605c2c1ee4cd63", kill_on_drop: false }`
[INFO] [stdout] b0f50834da5348ea2e47780cf33e495b53f72e0fc75e4e1844605c2c1ee4cd63
[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=forbid -Dtail_expr_drop_order" "-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+4d98531622e1718ae0bc3c7a1ab9cd8938428452" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 66fa27856171e2040f42a9b871f5a8641cd0ef4a786a4dc39f77aeb167f3a4f7
[INFO] running `Command { std: "docker" "start" "-a" "66fa27856171e2040f42a9b871f5a8641cd0ef4a786a4dc39f77aeb167f3a4f7", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.79
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]    Compiling serde v1.0.199
[INFO] [stderr]    Compiling parking_lot_core v0.9.9
[INFO] [stderr]     Checking memchr v2.7.1
[INFO] [stderr]    Compiling ahash v0.8.11
[INFO] [stderr]    Compiling lock_api v0.4.11
[INFO] [stderr]    Compiling cc v1.0.90
[INFO] [stderr]     Checking smallvec v1.13.1
[INFO] [stderr]     Checking log v0.4.21
[INFO] [stderr]     Checking itoa v1.0.10
[INFO] [stderr]     Checking zerocopy v0.7.32
[INFO] [stderr]     Checking allocator-api2 v0.2.16
[INFO] [stderr]     Checking futures-io v0.3.30
[INFO] [stderr]     Checking subtle v2.5.0
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]     Checking const-oid v0.9.6
[INFO] [stderr]    Compiling num-traits v0.2.18
[INFO] [stderr]    Compiling rustversion v1.0.14
[INFO] [stderr]    Compiling bytes v1.5.0
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling rustix v0.38.32
[INFO] [stderr]    Compiling anyhow v1.0.81
[INFO] [stderr]    Compiling bitflags v2.5.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.19
[INFO] [stderr]    Compiling unicode-segmentation v1.11.0
[INFO] [stderr]    Compiling thiserror v1.0.60
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]    Compiling linux-raw-sys v0.4.13
[INFO] [stderr]    Compiling syn v2.0.53
[INFO] [stderr]    Compiling heck v0.4.1
[INFO] [stderr]    Compiling futures-core v0.3.30
[INFO] [stderr]     Checking block-buffer v0.10.4
[INFO] [stderr]     Checking crypto-common v0.1.6
[INFO] [stderr]     Checking spin v0.9.8
[INFO] [stderr]     Checking http v1.1.0
[INFO] [stderr]    Compiling pin-project-lite v0.2.13
[INFO] [stderr]    Compiling scopeguard v1.2.0
[INFO] [stderr]     Checking base64ct v1.6.0
[INFO] [stderr]    Compiling aho-corasick v1.1.3
[INFO] [stderr]     Checking flagset v0.4.5
[INFO] [stderr]    Compiling futures-sink v0.3.30
[INFO] [stderr]    Compiling paste v1.0.14
[INFO] [stderr]    Compiling regex-syntax v0.8.2
[INFO] [stderr]     Checking rustls-pki-types v1.5.0
[INFO] [stderr]     Checking digest v0.10.7
[INFO] [stderr]     Checking pem-rfc7468 v0.7.0
[INFO] [stderr]    Compiling tinyvec_macros v0.1.1
[INFO] [stderr]    Compiling fastrand v2.0.1
[INFO] [stderr]    Compiling tinyvec v1.6.0
[INFO] [stderr]     Checking http v0.2.12
[INFO] [stderr]     Checking getrandom v0.2.12
[INFO] [stderr]     Checking signal-hook-registry v1.4.1
[INFO] [stderr]     Checking socket2 v0.5.6
[INFO] [stderr]     Checking num_cpus v1.16.0
[INFO] [stderr]     Checking mio v0.8.11
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]    Compiling openssl-sys v0.9.101
[INFO] [stderr]    Compiling ring v0.17.8
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking hashbrown v0.14.3
[INFO] [stderr]     Checking http-body v1.0.0
[INFO] [stderr]    Compiling libsqlite3-sys v0.27.0
[INFO] [stderr]    Compiling serde_json v1.0.114
[INFO] [stderr]     Checking ryu v1.0.17
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]    Compiling unicode-normalization v0.1.23
[INFO] [stderr]     Checking indexmap v2.2.5
[INFO] [stderr]    Compiling slab v0.4.9
[INFO] [stderr]    Compiling minimal-lexical v0.2.1
[INFO] [stderr]    Compiling unicode-bidi v0.3.15
[INFO] [stderr]    Compiling cfg_aliases v0.1.1
[INFO] [stderr]    Compiling prettyplease v0.2.16
[INFO] [stderr]    Compiling futures-task v0.3.30
[INFO] [stderr]    Compiling percent-encoding v2.3.1
[INFO] [stderr]    Compiling idna v0.5.0
[INFO] [stderr]    Compiling tempfile v3.10.1
[INFO] [stderr]    Compiling futures-util v0.3.30
[INFO] [stderr]    Compiling nix v0.28.0
[INFO] [stderr]    Compiling nom v7.1.3
[INFO] [stderr]    Compiling form_urlencoded v1.2.1
[INFO] [stderr]    Compiling regex-automata v0.4.6
[INFO] [stderr]    Compiling tokio v1.37.0
[INFO] [stderr]     Checking http-body v0.4.6
[INFO] [stderr]     Checking hmac v0.12.1
[INFO] [stderr]    Compiling tracing-core v0.1.32
[INFO] [stderr]    Compiling unicode_categories v0.1.1
[INFO] [stderr]    Compiling openssl v0.10.64
[INFO] [stderr]    Compiling ppv-lite86 v0.2.17
[INFO] [stderr]    Compiling fixedbitset v0.4.2
[INFO] [stderr]    Compiling crc-catalog v2.4.0
[INFO] [stderr]    Compiling home v0.5.9
[INFO] [stderr]    Compiling crc v3.0.1
[INFO] [stderr]    Compiling petgraph v0.6.4
[INFO] [stderr]    Compiling sha2 v0.10.8
[INFO] [stderr]    Compiling crossbeam-queue v0.3.11
[INFO] [stderr]    Compiling url v2.5.0
[INFO] [stderr]    Compiling futures-intrusive v0.5.0
[INFO] [stderr]    Compiling atoi v2.0.0
[INFO] [stderr]    Compiling hashlink v0.8.4
[INFO] [stderr]     Checking ff v0.13.0
[INFO] [stderr]    Compiling rustls v0.22.4
[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/4d98531622e1718ae0bc3c7a1ab9cd8938428452/bin/rustc --crate-name syn --edition=2018 /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/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="fold"' --cfg 'feature="full"' --cfg 'feature="parsing"' --cfg 'feature="printing"' --cfg 'feature="proc-macro"' --cfg 'feature="quote"' --cfg 'feature="visit"' --check-cfg 'cfg(docsrs)' --check-cfg 'cfg(feature, values("clone-impls", "default", "derive", "extra-traits", "fold", "full", "parsing", "printing", "proc-macro", "quote", "test", "visit", "visit-mut"))' -C metadata=42a0635831c26ff8 -C extra-filename=-42a0635831c26ff8 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-c0a7e744780d4271.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-cfd72e5a145dea92.rmeta --extern unicode_ident=/opt/rustwide/target/debug/deps/libunicode_ident-7b828347d8713ecd.rmeta --cap-lints allow --cap-lints=forbid -Dtail_expr_drop_order` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "66fa27856171e2040f42a9b871f5a8641cd0ef4a786a4dc39f77aeb167f3a4f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "66fa27856171e2040f42a9b871f5a8641cd0ef4a786a4dc39f77aeb167f3a4f7", kill_on_drop: false }`
[INFO] [stdout] 66fa27856171e2040f42a9b871f5a8641cd0ef4a786a4dc39f77aeb167f3a4f7