[INFO] updating cached repository https://github.com/theaaf/blackmagic-c2
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 1cc407e98607b1b8ab2f823ca0ce15c51a13e0f5
[INFO] checking theaaf/blackmagic-c2 against master#30ca215b4e38b32aa7abdd635c5e2d56f5724494 for pr-66037
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftheaaf%2Fblackmagic-c2" "/workspace/builds/worker-7/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/theaaf/blackmagic-c2 on toolchain 30ca215b4e38b32aa7abdd635c5e2d56f5724494
[INFO] running `"/workspace/cargo-home/bin/cargo" "+30ca215b4e38b32aa7abdd635c5e2d56f5724494" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/theaaf/blackmagic-c2
[INFO] finished tweaking git repo https://github.com/theaaf/blackmagic-c2
[INFO] tweaked toml for git repo https://github.com/theaaf/blackmagic-c2 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/theaaf/blackmagic-c2 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+30ca215b4e38b32aa7abdd635c5e2d56f5724494" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+30ca215b4e38b32aa7abdd635c5e2d56f5724494" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 6edaeefa0741344901cf74adaa5b2b2168ec726294d7e2bea4f01beac21dc11a
[INFO] running `"docker" "start" "-a" "6edaeefa0741344901cf74adaa5b2b2168ec726294d7e2bea4f01beac21dc11a"`
[INFO] [stderr]     Checking pnet_base v0.22.0
[INFO] [stderr]    Compiling bindgen v0.42.3
[INFO] [stderr]    Compiling pnet v0.22.0
[INFO] [stderr]    Compiling libloading v0.5.0
[INFO] [stderr]    Compiling brotli-sys v0.3.2
[INFO] [stderr]    Compiling ring v0.13.5
[INFO] [stderr]    Compiling miniz-sys v0.1.11
[INFO] [stderr]    Compiling syn v0.15.29
[INFO] [stderr]    Compiling clang-sys v0.26.4
[INFO] [stderr]    Compiling textwrap v0.10.0
[INFO] [stderr]     Checking rand v0.5.6
[INFO] [stderr]     Checking signal-hook v0.1.8
[INFO] [stderr]     Checking pnet_sys v0.22.0
[INFO] [stderr]     Checking gethostname v0.2.0
[INFO] [stderr]    Compiling atty v0.2.11
[INFO] [stderr]    Compiling which v1.0.5
[INFO] [stderr]    Compiling aho-corasick v0.6.10
[INFO] [stderr]    Compiling nom v4.2.3
[INFO] [stderr]     Checking backtrace-sys v0.1.28
[INFO] [stderr]    Compiling syntex_errors v0.42.0
[INFO] [stderr]     Checking indexmap v1.0.2
[INFO] [stderr]     Checking ipnetwork v0.14.0
[INFO] [stderr]     Checking rand v0.6.5
[INFO] [stderr]    Compiling syn v0.14.9
[INFO] [stderr]     Checking regex v1.0.6
[INFO] [stderr]     Checking pnet_macros_support v0.22.0
[INFO] [stderr]     Checking backtrace v0.3.14
[INFO] [stderr]     Checking serde_urlencoded v0.5.4
[INFO] [stderr]     Checking chrono v0.4.6
[INFO] [stderr]     Checking rmp v0.8.7 (https://github.com/3Hren/msgpack-rust?rev=40b3d480b20961e6eeceb416b32bcd0a3383846a#40b3d480)
[INFO] [stderr]     Checking tokio-io v0.1.12
[INFO] [stderr]    Compiling clap v2.32.0
[INFO] [stderr]     Checking pnet_datalink v0.22.0
[INFO] [stderr]    Compiling syntex_syntax v0.42.0
[INFO] [stderr]     Checking rmp-serde v0.14.0 (https://github.com/3Hren/msgpack-rust?rev=40b3d480b20961e6eeceb416b32bcd0a3383846a#40b3d480)
[INFO] [stderr]    Compiling cexpr v0.3.5
[INFO] [stderr]     Checking flate2 v1.0.7
[INFO] [stderr]     Checking tokio-codec v0.1.1
[INFO] [stderr]     Checking h2 v0.1.17
[INFO] [stderr]     Checking parking_lot_core v0.4.0
[INFO] [stderr]     Checking tokio-threadpool v0.1.13
[INFO] [stderr]     Checking uuid v0.7.2
[INFO] [stderr]    Compiling phf_generator v0.7.24
[INFO] [stderr]     Checking slog-term v2.4.0
[INFO] [stderr]    Compiling env_logger v0.5.13
[INFO] [stderr]     Checking parking_lot v0.7.1
[INFO] [stderr]    Compiling phf_codegen v0.7.24
[INFO] [stderr]     Checking tokio-fs v0.1.6
[INFO] [stderr]     Checking tokio-reactor v0.1.9
[INFO] [stderr]     Checking crossbeam v0.6.0
[INFO] [stderr]    Compiling mime_guess v2.0.0-alpha.6
[INFO] [stderr]     Checking slog-scope v4.1.1
[INFO] [stderr]     Checking tokio-tcp v0.1.3
[INFO] [stderr]     Checking tokio-udp v0.1.3
[INFO] [stderr]     Checking tokio-uds v0.2.5
[INFO] [stderr]     Checking tokio-signal v0.2.8
[INFO] [stderr]     Checking cookie v0.11.0
[INFO] [stderr]     Checking slog-stdlog v3.0.2
[INFO] [stderr]     Checking tokio v0.1.18
[INFO] [stderr]    Compiling synstructure v0.10.1
[INFO] [stderr]     Checking brotli2 v0.3.2
[INFO] [stderr] error: could not compile `syn`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name syn /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/syn-0.15.29/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts --crate-type lib --emit=dep-info,metadata,link -C debuginfo=2 --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"' -C metadata=517ea9de21e1bf58 -C extra-filename=-517ea9de21e1bf58 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-ca6a3ec20b7a437d.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-d5fff8d241b7249e.rmeta --extern unicode_xid=/opt/rustwide/target/debug/deps/libunicode_xid-e4364381f31e2715.rmeta --cap-lints allow --cap-lints=forbid --cfg syn_can_use_thread_id --cfg syn_can_call_macro_by_path` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `syn`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name syn /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/syn-0.14.9/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi --crate-type lib --emit=dep-info,metadata,link -C debuginfo=2 --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"' -C metadata=852b8ef6efc19dcd -C extra-filename=-852b8ef6efc19dcd --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-ca6a3ec20b7a437d.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-d5fff8d241b7249e.rmeta --extern unicode_xid=/opt/rustwide/target/debug/deps/libunicode_xid-e4364381f31e2715.rmeta --cap-lints allow --cap-lints=forbid` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "6edaeefa0741344901cf74adaa5b2b2168ec726294d7e2bea4f01beac21dc11a"`
[INFO] running `"docker" "rm" "-f" "6edaeefa0741344901cf74adaa5b2b2168ec726294d7e2bea4f01beac21dc11a"`
[INFO] [stdout] 6edaeefa0741344901cf74adaa5b2b2168ec726294d7e2bea4f01beac21dc11a