[INFO] crate mkbook 0.3.0 is already in cache
[INFO] checking mkbook-0.3.0 against master#6dee5f1126dfd5c9314ee5ae9d9eb010e35ef257 for pr-70872
[INFO] extracting crate mkbook 0.3.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate mkbook 0.3.0 on toolchain 6dee5f1126dfd5c9314ee5ae9d9eb010e35ef257
[INFO] running `"/workspace/cargo-home/bin/cargo" "+6dee5f1126dfd5c9314ee5ae9d9eb010e35ef257" "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-4/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" "+6dee5f1126dfd5c9314ee5ae9d9eb010e35ef257" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+6dee5f1126dfd5c9314ee5ae9d9eb010e35ef257" "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] 519cb6b4b5742d5f514b9ba06699fc5142915ddbf13fe75ebcca76c427f9cda7
[INFO] running `"docker" "start" "-a" "519cb6b4b5742d5f514b9ba06699fc5142915ddbf13fe75ebcca76c427f9cda7"`
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling regex-syntax v0.6.12
[INFO] [stderr]    Compiling humansize v1.1.0
[INFO] [stderr]    Compiling askama_escape v0.2.0
[INFO] [stderr]    Compiling syn v1.0.8
[INFO] [stderr]    Compiling bincode v1.2.0
[INFO] [stderr]    Compiling libloading v0.5.2
[INFO] [stderr]     Checking inotify-sys v0.1.3
[INFO] [stderr]     Checking filetime v0.2.8
[INFO] [stderr]    Compiling atty v0.2.13
[INFO] [stderr]    Compiling num_cpus v1.11.1
[INFO] [stderr]     Checking twoway v0.2.1
[INFO] [stderr]    Compiling fxhash v0.2.1
[INFO] [stderr]    Compiling num-traits v0.2.10
[INFO] [stderr]    Compiling backtrace-sys v0.1.32
[INFO] [stderr]     Checking flate2 v1.0.13
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]     Checking inotify v0.6.1
[INFO] [stderr]     Checking num-integer v0.1.41
[INFO] [stderr]    Compiling cexpr v0.3.6
[INFO] [stderr]    Compiling backtrace v0.3.40
[INFO] [stderr]    Compiling sass-sys v0.4.15
[INFO] [stderr]     Checking chrono v0.4.10
[INFO] [stderr]    Compiling failure v0.1.6
[INFO] [stderr]    Compiling clang-sys v0.28.1
[INFO] [stderr]    Compiling which v2.0.1
[INFO] [stderr] error: could not compile `regex-syntax`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name regex_syntax /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/regex-syntax-0.6.12/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts --crate-type lib --emit=dep-info,metadata,link -C debuginfo=2 --cfg 'feature="default"' --cfg 'feature="unicode"' --cfg 'feature="unicode-age"' --cfg 'feature="unicode-bool"' --cfg 'feature="unicode-case"' --cfg 'feature="unicode-gencat"' --cfg 'feature="unicode-perl"' --cfg 'feature="unicode-script"' --cfg 'feature="unicode-segment"' -C metadata=6c462173084ec2c4 -C extra-filename=-6c462173084ec2c4 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --cap-lints allow --cap-lints=forbid` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `cexpr`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name cexpr /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/cexpr-0.3.6/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts --crate-type lib --emit=dep-info,metadata,link -C debuginfo=2 -C metadata=db3bd57a70207cea -C extra-filename=-db3bd57a70207cea --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern nom=/opt/rustwide/target/debug/deps/libnom-aa435d4dad76f2a0.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: 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-1.0.8/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="parsing"' --cfg 'feature="printing"' --cfg 'feature="proc-macro"' --cfg 'feature="quote"' --cfg 'feature="visit"' -C metadata=154b7f82335aadae -C extra-filename=-154b7f82335aadae --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-e6d13cf8f5fd2615.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-ffa9376cfddbe96d.rmeta --extern unicode_xid=/opt/rustwide/target/debug/deps/libunicode_xid-8102a7debacf0baa.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: could not compile `clap`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name clap /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/clap-2.33.0/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts --crate-type lib --emit=dep-info,metadata,link -C debuginfo=2 --cfg 'feature="ansi_term"' --cfg 'feature="atty"' --cfg 'feature="color"' --cfg 'feature="default"' --cfg 'feature="strsim"' --cfg 'feature="suggestions"' --cfg 'feature="vec_map"' -C metadata=ae2de86a584f320a -C extra-filename=-ae2de86a584f320a --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern ansi_term=/opt/rustwide/target/debug/deps/libansi_term-51c988b3970d5079.rmeta --extern atty=/opt/rustwide/target/debug/deps/libatty-1f04f5753b7f6b8e.rmeta --extern bitflags=/opt/rustwide/target/debug/deps/libbitflags-c55bb6fd2099ef22.rmeta --extern strsim=/opt/rustwide/target/debug/deps/libstrsim-4d5dd1ad0fbc9aaf.rmeta --extern textwrap=/opt/rustwide/target/debug/deps/libtextwrap-97df62f44dec8f08.rmeta --extern unicode_width=/opt/rustwide/target/debug/deps/libunicode_width-5011eb4487f58515.rmeta --extern vec_map=/opt/rustwide/target/debug/deps/libvec_map-ef3d827f440d5f28.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" "519cb6b4b5742d5f514b9ba06699fc5142915ddbf13fe75ebcca76c427f9cda7"`
[INFO] running `"docker" "rm" "-f" "519cb6b4b5742d5f514b9ba06699fc5142915ddbf13fe75ebcca76c427f9cda7"`
[INFO] [stdout] 519cb6b4b5742d5f514b9ba06699fc5142915ddbf13fe75ebcca76c427f9cda7