[INFO] crate mkbook 0.3.0 is already in cache
[INFO] checking mkbook-0.3.0 against try#a243773eaf3fedcd203f10ae4579e4f106bf7ccd for pr-68325
[INFO] extracting crate mkbook 0.3.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate mkbook 0.3.0 on toolchain a243773eaf3fedcd203f10ae4579e4f106bf7ccd
[INFO] running `"/workspace/cargo-home/bin/cargo" "+a243773eaf3fedcd203f10ae4579e4f106bf7ccd" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate mkbook 0.3.0
[INFO] finished tweaking crates.io crate mkbook 0.3.0
[INFO] tweaked toml for crates.io crate mkbook 0.3.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate mkbook 0.3.0 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+a243773eaf3fedcd203f10ae4579e4f106bf7ccd" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+a243773eaf3fedcd203f10ae4579e4f106bf7ccd" "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] de04d28da579e7dd79fa07eed02b40ce010161e2b4a600b93b42818dff18c2af
[INFO] running `"docker" "start" "-a" "de04d28da579e7dd79fa07eed02b40ce010161e2b4a600b93b42818dff18c2af"`
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]     Checking unchecked-index v0.2.2
[INFO] [stderr]     Checking line-wrap v0.1.1
[INFO] [stderr]    Compiling libc v0.2.65
[INFO] [stderr]     Checking inotify-sys v0.1.3
[INFO] [stderr]     Checking filetime v0.2.8
[INFO] [stderr]     Checking bstr v0.2.8
[INFO] [stderr]    Compiling libloading v0.5.2
[INFO] [stderr]     Checking flate2 v1.0.13
[INFO] [stderr]    Compiling regex v1.3.1
[INFO] [stderr]     Checking colored v1.9.0
[INFO] [stderr]     Checking twoway v0.2.1
[INFO] [stderr]    Compiling serde_derive v1.0.103
[INFO] [stderr]    Compiling pest_generator v2.1.1
[INFO] [stderr]     Checking inotify v0.6.1
[INFO] [stderr]     Checking chrono v0.4.10
[INFO] [stderr]     Checking sha-1 v0.8.1
[INFO] [stderr]    Compiling backtrace-sys v0.1.32
[INFO] [stderr]    Compiling atty v0.2.13
[INFO] [stderr]    Compiling clang-sys v0.28.1
[INFO] [stderr]    Compiling num_cpus v1.11.1
[INFO] [stderr]    Compiling backtrace v0.3.40
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]    Compiling failure v0.1.6
[INFO] [stderr]    Compiling which v2.0.1
[INFO] [stderr]    Compiling sass-sys v0.4.15
[INFO] [stderr]    Compiling pest_derive v2.1.0
[INFO] [stderr] error: could not compile `clang-sys`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name clang_sys /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/clang-sys-0.28.1/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts --crate-type lib --emit=dep-info,metadata,link -C debuginfo=2 --cfg 'feature="clang_6_0"' --cfg 'feature="gte_clang_3_6"' --cfg 'feature="gte_clang_3_7"' --cfg 'feature="gte_clang_3_8"' --cfg 'feature="gte_clang_3_9"' --cfg 'feature="gte_clang_4_0"' --cfg 'feature="gte_clang_5_0"' --cfg 'feature="gte_clang_6_0"' --cfg 'feature="libloading"' --cfg 'feature="runtime"' -C metadata=f33be4d04819b9d6 -C extra-filename=-f33be4d04819b9d6 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern glob=/opt/rustwide/target/debug/deps/libglob-1ffc2d135ed1e1c0.rmeta --extern libc=/opt/rustwide/target/debug/deps/liblibc-b5e6a57ba75fb736.rmeta --extern libloading=/opt/rustwide/target/debug/deps/liblibloading-38b0cf8c3b8c0b50.rmeta --cap-lints allow --cap-lints=forbid -L native=/opt/rustwide/target/debug/build/libloading-26b5a43f3991a86d/out` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `serde_derive`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name serde_derive /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/serde_derive-1.0.103/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi --crate-type proc-macro --emit=dep-info,link -C prefer-dynamic -C debuginfo=2 --cfg 'feature="default"' -C metadata=6128503770ea0892 -C extra-filename=-6128503770ea0892 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-e8250858807eebbd.rlib --extern quote=/opt/rustwide/target/debug/deps/libquote-694ae1a2a705704e.rlib --extern syn=/opt/rustwide/target/debug/deps/libsyn-4d3711d92d4b9dd6.rlib --extern proc_macro --cap-lints allow --cap-lints=forbid` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[ERROR] error running command: no output for 300 seconds
[INFO] running `"docker" "inspect" "de04d28da579e7dd79fa07eed02b40ce010161e2b4a600b93b42818dff18c2af"`
[INFO] running `"docker" "rm" "-f" "de04d28da579e7dd79fa07eed02b40ce010161e2b4a600b93b42818dff18c2af"`
[INFO] [stdout] de04d28da579e7dd79fa07eed02b40ce010161e2b4a600b93b42818dff18c2af