[INFO] fetching crate c2g 0.7.4...
[INFO] testing c2g-0.7.4 against master#159ba8a92c9e2fa4121f106176309521f4af87e9+rustflags=-Copt-level=3 for pr-107051
[INFO] extracting crate c2g 0.7.4 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate c2g 0.7.4 on toolchain 159ba8a92c9e2fa4121f106176309521f4af87e9
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+159ba8a92c9e2fa4121f106176309521f4af87e9" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate c2g 0.7.4
[INFO] finished tweaking crates.io crate c2g 0.7.4
[INFO] tweaked toml for crates.io crate c2g 0.7.4 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate crates.io crate c2g 0.7.4 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" "+159ba8a92c9e2fa4121f106176309521f4af87e9" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr] `license` should be used if the package license can be expressed with a standard SPDX expression.
[INFO] [stderr] `license-file` should be used if the package uses a non-standard license.
[INFO] [stderr] See https://doc.rust-lang.org/cargo/reference/manifest.html#the-license-and-license-file-fields for more information.
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded fontdb v0.9.1
[INFO] [stderr]   Downloaded xmlparser v0.13.3
[INFO] [stderr]   Downloaded roxmltree v0.14.1
[INFO] [stderr]   Downloaded syn v1.0.73
[INFO] [stderr]   Downloaded safe_arch v0.5.2
[INFO] [stderr]   Downloaded weezl v0.1.5
[INFO] [stderr]   Downloaded btoi v0.4.2
[INFO] [stderr]   Downloaded unicode-ccc v0.1.2
[INFO] [stderr]   Downloaded include_dir_impl v0.6.0
[INFO] [stderr]   Downloaded lebe v0.5.1
[INFO] [stderr]   Downloaded include_dir v0.6.0
[INFO] [stderr]   Downloaded inflate v0.4.5
[INFO] [stderr]   Downloaded memmap2 v0.5.3
[INFO] [stderr]   Downloaded svgfilters v0.4.0
[INFO] [stderr]   Downloaded simplecss v0.2.1
[INFO] [stderr]   Downloaded exr v1.4.1
[INFO] [stderr]   Downloaded slice-deque v0.3.0
[INFO] [stderr]   Downloaded jpeg-decoder v0.2.2
[INFO] [stderr]   Downloaded tiff v0.7.1
[INFO] [stderr]   Downloaded resvg v0.22.0
[INFO] [stderr]   Downloaded unicode-script v0.5.2
[INFO] [stderr]   Downloaded rgb v0.8.27
[INFO] [stderr]   Downloaded data-url v0.1.0
[INFO] [stderr]   Downloaded unicode-general-category v0.4.0
[INFO] [stderr]   Downloaded unicode-vo v0.1.0
[INFO] [stderr]   Downloaded rctree v0.4.0
[INFO] [stderr]   Downloaded unicode-bidi-mirroring v0.1.0
[INFO] [stderr]   Downloaded usvg v0.22.0
[INFO] [stderr]   Downloaded xmlwriter v0.1.0
[INFO] [stderr]   Downloaded gif v0.11.3
[INFO] [stderr]   Downloaded bytemuck v1.7.0
[INFO] [stderr]   Downloaded fontconfig-parser v0.5.0
[INFO] [stderr]   Downloaded flate2 v1.0.20
[INFO] [stderr]   Downloaded ttf-parser v0.15.0
[INFO] [stderr]   Downloaded svgtypes v0.8.0
[INFO] [stderr]   Downloaded pgn-reader v0.20.0
[INFO] [stderr]   Downloaded kurbo v0.8.1
[INFO] [stderr]   Downloaded tiny-skia v0.6.3
[INFO] [stderr]   Downloaded image v0.24.1
[INFO] [stderr]   Downloaded shakmaty v0.21.0
[INFO] [stderr]   Downloaded rustybuzz v0.5.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:7c93e6f9a94679f34221d1005849d4c83862f85b14a264fa0883942f4d043a66" "/opt/rustwide/cargo-home/bin/cargo" "+159ba8a92c9e2fa4121f106176309521f4af87e9" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f9a71cd2099d09f5c416421e61d9e89550ceec4d65b30fbb15bce6950fd2ae3f
[INFO] running `Command { std: "docker" "start" "-a" "f9a71cd2099d09f5c416421e61d9e89550ceec4d65b30fbb15bce6950fd2ae3f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f9a71cd2099d09f5c416421e61d9e89550ceec4d65b30fbb15bce6950fd2ae3f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f9a71cd2099d09f5c416421e61d9e89550ceec4d65b30fbb15bce6950fd2ae3f", kill_on_drop: false }`
[INFO] [stdout] f9a71cd2099d09f5c416421e61d9e89550ceec4d65b30fbb15bce6950fd2ae3f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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 -Copt-level=3" "-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@sha256:7c93e6f9a94679f34221d1005849d4c83862f85b14a264fa0883942f4d043a66" "/opt/rustwide/cargo-home/bin/cargo" "+159ba8a92c9e2fa4121f106176309521f4af87e9" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 11741077fc757bd0bbf70118299d4d9f00a5118d7dc5f1e9b7b853b2c874336d
[INFO] running `Command { std: "docker" "start" "-a" "11741077fc757bd0bbf70118299d4d9f00a5118d7dc5f1e9b7b853b2c874336d", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr] `license` should be used if the package license can be expressed with a standard SPDX expression.
[INFO] [stderr] `license-file` should be used if the package uses a non-standard license.
[INFO] [stderr] See https://doc.rust-lang.org/cargo/reference/manifest.html#the-license-and-license-file-fields for more information.
[INFO] [stderr]    Compiling libc v0.2.97
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]    Compiling memoffset v0.6.4
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.5
[INFO] [stderr]    Compiling bytemuck v1.7.0
[INFO] [stderr]    Compiling adler32 v1.2.0
[INFO] [stderr]    Compiling rayon-core v1.9.1
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]    Compiling futures-core v0.3.21
[INFO] [stderr]    Compiling smallvec v1.8.0
[INFO] [stderr]    Compiling xmlparser v0.13.3
[INFO] [stderr]    Compiling deflate v1.0.0
[INFO] [stderr]    Compiling unicode-general-category v0.4.0
[INFO] [stderr]    Compiling lock_api v0.4.6
[INFO] [stderr]    Compiling miniz_oxide v0.5.1
[INFO] [stderr]    Compiling roxmltree v0.14.1
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling matches v0.1.8
[INFO] [stderr]    Compiling weezl v0.1.5
[INFO] [stderr]    Compiling anyhow v1.0.41
[INFO] [stderr]    Compiling arrayvec v0.5.2
[INFO] [stderr]    Compiling ttf-parser v0.15.0
[INFO] [stderr]    Compiling png v0.17.5
[INFO] [stderr]    Compiling crossbeam-channel v0.5.1
[INFO] [stderr]    Compiling crossbeam-deque v0.8.0
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling flate2 v1.0.20
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling getrandom v0.2.5
[INFO] [stderr]    Compiling nanorand v0.7.0
[INFO] [stderr]    Compiling memmap2 v0.5.3
[INFO] [stderr]    Compiling fontconfig-parser v0.5.0
[INFO] [stderr]    Compiling spin v0.9.2
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling num-rational v0.4.0
[INFO] [stderr]    Compiling shakmaty v0.21.0
[INFO] [stderr]    Compiling unicode-script v0.5.2
[INFO] [stderr]    Compiling unicode-bidi-mirroring v0.1.0
[INFO] [stderr]    Compiling unicode-ccc v0.1.2
[INFO] [stderr]    Compiling siphasher v0.3.10
[INFO] [stderr]    Compiling float-cmp v0.9.0
[INFO] [stderr]    Compiling futures-sink v0.3.21
[INFO] [stderr]    Compiling gif v0.11.3
[INFO] [stderr]    Compiling fontdb v0.9.1
[INFO] [stderr]    Compiling rustybuzz v0.5.0
[INFO] [stderr]    Compiling threadpool v1.8.1
[INFO] [stderr]    Compiling svgtypes v0.8.0
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling btoi v0.4.2
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]    Compiling kurbo v0.8.1
[INFO] [stderr]    Compiling unicode-bidi v0.3.5
[INFO] [stderr]    Compiling data-url v0.1.0
[INFO] [stderr]    Compiling rgb v0.8.27
[INFO] [stderr]    Compiling jpeg-decoder v0.2.2
[INFO] [stderr]    Compiling safe_arch v0.5.2
[INFO] [stderr]    Compiling inflate v0.4.5
[INFO] [stderr]    Compiling simplecss v0.2.1
[INFO] [stderr]    Compiling unicode-width v0.1.8
[INFO] [stderr]    Compiling pico-args v0.4.2
[INFO] [stderr]    Compiling arrayref v0.3.6
[INFO] [stderr]    Compiling rctree v0.4.0
[INFO] [stderr]    Compiling jpeg-decoder v0.1.22
[INFO] [stderr]    Compiling unicode-vo v0.1.0
[INFO] [stderr]    Compiling lebe v0.5.1
[INFO] [stderr]    Compiling half v1.8.2
[INFO] [stderr]    Compiling xmlwriter v0.1.0
[INFO] [stderr]    Compiling usvg v0.22.0
[INFO] [stderr]    Compiling regex v1.5.5
[INFO] [stderr]    Compiling tiny-skia v0.6.3
[INFO] [stderr]    Compiling tiff v0.7.1
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling svgfilters v0.4.0
[INFO] [stderr]    Compiling slice-deque v0.3.0
[INFO] [stderr]    Compiling glob v0.3.0
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr] error: could not compile `syn`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name syn --edition=2018 /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/syn-1.0.73/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 -C debuginfo=2 --cfg 'feature="clone-impls"' --cfg 'feature="default"' --cfg 'feature="derive"' --cfg 'feature="full"' --cfg 'feature="parsing"' --cfg 'feature="printing"' --cfg 'feature="proc-macro"' --cfg 'feature="quote"' --cfg 'feature="visit-mut"' -C metadata=964e37aa769d793d -C extra-filename=-964e37aa769d793d --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-c22f143857bd0eb1.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-b999afa71eb18cfa.rmeta --extern unicode_xid=/opt/rustwide/target/debug/deps/libunicode_xid-3c8a88541efd8c80.rmeta --cap-lints allow --cap-lints=forbid -Copt-level=3` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "11741077fc757bd0bbf70118299d4d9f00a5118d7dc5f1e9b7b853b2c874336d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "11741077fc757bd0bbf70118299d4d9f00a5118d7dc5f1e9b7b853b2c874336d", kill_on_drop: false }`
[INFO] [stdout] 11741077fc757bd0bbf70118299d4d9f00a5118d7dc5f1e9b7b853b2c874336d