[INFO] updating cached repository https://github.com/maroider/srco2
[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] cf97c19fc303d68d91eb26186d69b4e8e42f5471
[INFO] checking maroider/srco2 against try#c846f8a7dc7af09647f397f047db9cc81acb60bd for pr-69129
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmaroider%2Fsrco2" "/workspace/builds/worker-11/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-11/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/maroider/srco2 on toolchain c846f8a7dc7af09647f397f047db9cc81acb60bd
[INFO] running `"/workspace/cargo-home/bin/cargo" "+c846f8a7dc7af09647f397f047db9cc81acb60bd" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/maroider/srco2
[INFO] finished tweaking git repo https://github.com/maroider/srco2
[INFO] tweaked toml for git repo https://github.com/maroider/srco2 written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] crate git repo https://github.com/maroider/srco2 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+c846f8a7dc7af09647f397f047db9cc81acb60bd" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "+c846f8a7dc7af09647f397f047db9cc81acb60bd" "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] 915b9435baee0812bd799fa0bee265160234542237ef591409e1aeacaa5154e3
[INFO] running `"docker" "start" "-a" "915b9435baee0812bd799fa0bee265160234542237ef591409e1aeacaa5154e3"`
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling safemem v0.3.2
[INFO] [stderr]    Compiling indexmap v1.1.0
[INFO] [stderr]    Compiling ring v0.13.5
[INFO] [stderr]    Compiling libz-sys v1.0.25
[INFO] [stderr]    Compiling libssh2-sys v0.2.11
[INFO] [stderr]    Compiling miniz-sys v0.1.12
[INFO] [stderr]    Compiling libgit2-sys v0.9.0
[INFO] [stderr]    Compiling bitflags v1.1.0
[INFO] [stderr]    Compiling pest_meta v2.1.1
[INFO] [stderr]    Compiling log v0.3.9
[INFO] [stderr]     Checking filetime v0.2.5
[INFO] [stderr]     Checking inotify v0.6.1
[INFO] [stderr]     Checking mio-extras v2.0.5
[INFO] [stderr]     Checking error-chain v0.12.1
[INFO] [stderr]     Checking chrono v0.4.7
[INFO] [stderr]     Checking env_logger v0.6.2
[INFO] [stderr]    Compiling base64 v0.9.3
[INFO] [stderr]     Checking toml v0.4.10
[INFO] [stderr]     Checking ron v0.5.1
[INFO] [stderr]    Compiling mime v0.2.6
[INFO] [stderr]     Checking notify v4.0.12
[INFO] [stderr]    Compiling hyper v0.10.16
[INFO] [stderr]     Checking flate2 v1.0.11
[INFO] [stderr]     Checking cookie v0.11.1
[INFO] [stderr]    Compiling devise_core v0.2.0
[INFO] [stderr]    Compiling synstructure v0.10.2
[INFO] [stderr]    Compiling pest_generator v2.1.0
[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-0.15.44/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"' --cfg 'feature="visit-mut"' -C metadata=fae3dfbaae81f7a2 -C extra-filename=-fae3dfbaae81f7a2 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-e19b360d578bf6a3.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-b71741692791ca81.rmeta --extern unicode_xid=/opt/rustwide/target/debug/deps/libunicode_xid-07e96887676a8d46.rmeta --cap-lints allow --cap-lints=forbid --cfg syn_can_match_trailing_dollar --cfg syn_can_use_thread_id --cfg syn_can_use_associated_constants --cfg syn_can_call_macro_by_path` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `"docker" "inspect" "915b9435baee0812bd799fa0bee265160234542237ef591409e1aeacaa5154e3"`
[INFO] running `"docker" "rm" "-f" "915b9435baee0812bd799fa0bee265160234542237ef591409e1aeacaa5154e3"`
[INFO] [stdout] 915b9435baee0812bd799fa0bee265160234542237ef591409e1aeacaa5154e3