[INFO] fetching crate preamble2 0.0.1...
[INFO] testing preamble2-0.0.1 against master#d7bd9cd469ff6871420007f091ef52fc32d2ca99 for pr-121417
[INFO] extracting crate preamble2 0.0.1 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate preamble2 0.0.1 on toolchain d7bd9cd469ff6871420007f091ef52fc32d2ca99
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d7bd9cd469ff6871420007f091ef52fc32d2ca99" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate preamble2 0.0.1
[INFO] finished tweaking crates.io crate preamble2 0.0.1
[INFO] tweaked toml for crates.io crate preamble2 0.0.1 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d7bd9cd469ff6871420007f091ef52fc32d2ca99" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d7bd9cd469ff6871420007f091ef52fc32d2ca99" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded merge_derive v0.1.0
[INFO] [stderr]   Downloaded config v0.11.0
[INFO] [stderr]   Downloaded merge v0.1.0
[INFO] [stderr]   Downloaded leon v2.0.1
[INFO] [stderr]   Downloaded serde-hjson v0.9.1
[INFO] [stderr]   Downloaded rust-ini v0.13.0
[INFO] [stderr]   Downloaded serde v0.8.23
[INFO] [stderr]   Downloaded gif v0.13.1
[INFO] [stderr]   Downloaded tint v1.0.1
[INFO] [stderr]   Downloaded ptree v0.4.0
[INFO] [stderr]   Downloaded lice v0.1.4
[INFO] [stderr]   Downloaded exr v1.72.0
[INFO] [stderr]   Downloaded gitignores v2.3.3
[INFO] [stderr]   Downloaded jpeg-decoder v0.3.1
[INFO] [stderr]   Downloaded tiff v0.9.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+d7bd9cd469ff6871420007f091ef52fc32d2ca99" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bb02fff21a951426c4d8ed4b167124e1175965d8389b6b357dbf4dc9b3fc2e16
[INFO] running `Command { std: "docker" "start" "-a" "bb02fff21a951426c4d8ed4b167124e1175965d8389b6b357dbf4dc9b3fc2e16", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bb02fff21a951426c4d8ed4b167124e1175965d8389b6b357dbf4dc9b3fc2e16", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bb02fff21a951426c4d8ed4b167124e1175965d8389b6b357dbf4dc9b3fc2e16", kill_on_drop: false }`
[INFO] [stdout] bb02fff21a951426c4d8ed4b167124e1175965d8389b6b357dbf4dc9b3fc2e16
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+d7bd9cd469ff6871420007f091ef52fc32d2ca99" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 311e2d6801a68264e5ac897e1186e784db4cfba1826afcd23f7b3c70f5adfecc
[INFO] running `Command { std: "docker" "start" "-a" "311e2d6801a68264e5ac897e1186e784db4cfba1826afcd23f7b3c70f5adfecc", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.7.1
[INFO] [stderr]    Compiling log v0.4.21
[INFO] [stderr]    Compiling serde v1.0.197
[INFO] [stderr]    Compiling num-traits v0.2.18
[INFO] [stderr]    Compiling bytes v1.5.0
[INFO] [stderr]    Compiling tracing-core v0.1.32
[INFO] [stderr]    Compiling simd-adler32 v0.3.7
[INFO] [stderr]    Compiling syn v2.0.52
[INFO] [stderr]    Compiling regex-syntax v0.8.2
[INFO] [stderr]    Compiling lexical-core v0.7.6
[INFO] [stderr]    Compiling signal-hook v0.3.17
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling unicode-normalization v0.1.23
[INFO] [stderr]    Compiling futures-channel v0.3.30
[INFO] [stderr]    Compiling nom v5.1.3
[INFO] [stderr]    Compiling unicode-bidi v0.3.15
[INFO] [stderr]    Compiling mio v0.8.11
[INFO] [stderr]    Compiling miniz_oxide v0.7.2
[INFO] [stderr]    Compiling arrayvec v0.5.2
[INFO] [stderr]    Compiling dirs-sys-next v0.1.2
[INFO] [stderr]    Compiling serde v0.8.23
[INFO] [stderr]    Compiling regex-syntax v0.6.29
[INFO] [stderr]    Compiling aho-corasick v1.1.2
[INFO] [stderr]    Compiling http v0.2.11
[INFO] [stderr]    Compiling futures-util v0.3.30
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling flate2 v1.0.28
[INFO] [stderr]    Compiling idna v0.5.0
[INFO] [stderr]    Compiling linked-hash-map v0.5.6
[INFO] [stderr]    Compiling anyhow v1.0.80
[INFO] [stderr]    Compiling merge_derive v0.1.0
[INFO] [stderr]    Compiling yaml-rust v0.4.5
[INFO] [stderr]    Compiling signal-hook-mio v0.2.3
[INFO] [stderr]    Compiling csv-core v0.1.11
[INFO] [stderr]    Compiling dirs-next v2.0.0
[INFO] [stderr]    Compiling flume v0.11.0
[INFO] [stderr]    Compiling jpeg-decoder v0.3.1
[INFO] [stderr]    Compiling http-body v0.4.6
[INFO] [stderr]    Compiling url v2.5.0
[INFO] [stderr]    Compiling fdeflate v0.3.4
[INFO] [stderr]    Compiling num-traits v0.1.43
[INFO] [stderr]    Compiling ordered-float v2.10.1
[INFO] [stderr]    Compiling zune-inflate v0.2.54
[INFO] [stderr]    Compiling dirs-sys v0.3.7
[INFO] [stderr]    Compiling half v2.4.0
[INFO] [stderr]    Compiling semver v1.0.22
[INFO] [stderr]    Compiling rust-ini v0.13.0
[INFO] [stderr]    Compiling regex-automata v0.4.5
[INFO] [stderr]    Compiling overload v0.1.1
[INFO] [stderr]    Compiling unicode-segmentation v1.11.0
[INFO] [stderr]    Compiling lazy_static v0.2.11
[INFO] [stderr]    Compiling bytemuck v1.14.3
[INFO] [stderr]    Compiling regex-automata v0.1.10
[INFO] [stderr]    Compiling bit_field v0.10.2
[INFO] [stderr]    Compiling exr v1.72.0
[INFO] [stderr]    Compiling tint v1.0.1
[INFO] [stderr]    Compiling qoi v0.4.1
[INFO] [stderr]    Compiling petgraph v0.6.4
[INFO] [stderr]    Compiling gif v0.13.1
[INFO] [stderr]    Compiling newline-converter v0.2.2
[INFO] [stderr]    Compiling nu-ansi-term v0.46.0
[INFO] [stderr]    Compiling tiff v0.9.1
[INFO] [stderr]    Compiling directories v4.0.1
[INFO] [stderr]    Compiling matchers v0.1.0
[INFO] [stderr]    Compiling png v0.17.13
[INFO] [stderr]    Compiling merge v0.1.0
[INFO] [stderr]    Compiling term v0.7.0
[INFO] [stderr]    Compiling crossterm v0.25.0
[INFO] [stderr]    Compiling tracing-log v0.2.0
[INFO] [stderr]    Compiling sharded-slab v0.1.7
[INFO] [stderr]    Compiling is-terminal v0.4.12
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling thread_local v1.1.8
[INFO] [stderr]    Compiling ansi_term v0.12.1
[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/d7bd9cd469ff6871420007f091ef52fc32d2ca99/bin/rustc --crate-name syn --edition=2021 /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/syn-2.0.52/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-mut"' -C metadata=7dba7836566c2401 -C extra-filename=-7dba7836566c2401 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-9675dab333a2ba88.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-9a3c6f2abd5cb631.rmeta --extern unicode_ident=/opt/rustwide/target/debug/deps/libunicode_ident-f8d62a079c79a15a.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" "311e2d6801a68264e5ac897e1186e784db4cfba1826afcd23f7b3c70f5adfecc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "311e2d6801a68264e5ac897e1186e784db4cfba1826afcd23f7b3c70f5adfecc", kill_on_drop: false }`
[INFO] [stdout] 311e2d6801a68264e5ac897e1186e784db4cfba1826afcd23f7b3c70f5adfecc