[INFO] crate mkbook 0.3.0 is already in cache
[INFO] checking mkbook-0.3.0 against master#e2223c94bf433fc38234d1303e88cbaf14755863 for pr-69548
[INFO] extracting crate mkbook 0.3.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate mkbook 0.3.0 on toolchain e2223c94bf433fc38234d1303e88cbaf14755863
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e2223c94bf433fc38234d1303e88cbaf14755863" "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-7/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" "+e2223c94bf433fc38234d1303e88cbaf14755863" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[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" "+e2223c94bf433fc38234d1303e88cbaf14755863" "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] ceadace1d45767740de2a2bdb39ba33edf5a329331d9a89a5eed912f597b2721
[INFO] running `"docker" "start" "-a" "ceadace1d45767740de2a2bdb39ba33edf5a329331d9a89a5eed912f597b2721"`
[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 proc-macro2 v1.0.6
[INFO] [stderr]    Compiling num_cpus v1.11.1
[INFO] [stderr]     Checking inotify-sys v0.1.3
[INFO] [stderr]     Checking filetime v0.2.8
[INFO] [stderr]    Compiling backtrace-sys v0.1.32
[INFO] [stderr]     Checking flate2 v1.0.13
[INFO] [stderr]    Compiling regex v1.3.1
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]     Checking colored v1.9.0
[INFO] [stderr]    Compiling backtrace v0.3.40
[INFO] [stderr]     Checking block-buffer v0.7.3
[INFO] [stderr]     Checking twoway v0.2.1
[INFO] [stderr]     Checking inotify v0.6.1
[INFO] [stderr]    Compiling sass-sys v0.4.15
[INFO] [stderr]     Checking chrono v0.4.10
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking sha-1 v0.8.1
[INFO] [stderr]    Compiling failure v0.1.6
[INFO] [stderr]    Compiling syn v1.0.8
[INFO] [stderr]    Compiling which v2.0.1
[INFO] [stderr] error: could not compile `regex`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name regex /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/regex-1.3.1/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts --crate-type lib --emit=dep-info,metadata,link -C debuginfo=2 --cfg 'feature="aho-corasick"' --cfg 'feature="default"' --cfg 'feature="memchr"' --cfg 'feature="perf"' --cfg 'feature="perf-cache"' --cfg 'feature="perf-dfa"' --cfg 'feature="perf-inline"' --cfg 'feature="perf-literal"' --cfg 'feature="std"' --cfg 'feature="thread_local"' --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=c480efbd69c1631b -C extra-filename=-c480efbd69c1631b --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern aho_corasick=/opt/rustwide/target/debug/deps/libaho_corasick-376258241a5f3c02.rmeta --extern memchr=/opt/rustwide/target/debug/deps/libmemchr-33555ae125620704.rmeta --extern regex_syntax=/opt/rustwide/target/debug/deps/libregex_syntax-e5ff8dfd6d081c2e.rmeta --extern thread_local=/opt/rustwide/target/debug/deps/libthread_local-10d1b6fcccac6f55.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=cf284f6350239b46 -C extra-filename=-cf284f6350239b46 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern ansi_term=/opt/rustwide/target/debug/deps/libansi_term-7b9ef3dc6050aae8.rmeta --extern atty=/opt/rustwide/target/debug/deps/libatty-fa77d38be05e3193.rmeta --extern bitflags=/opt/rustwide/target/debug/deps/libbitflags-7ada6ca79287ee38.rmeta --extern strsim=/opt/rustwide/target/debug/deps/libstrsim-cc0f2e832e104ee2.rmeta --extern textwrap=/opt/rustwide/target/debug/deps/libtextwrap-1b0e76b88d8db68d.rmeta --extern unicode_width=/opt/rustwide/target/debug/deps/libunicode_width-82c7a0c7e03a84d8.rmeta --extern vec_map=/opt/rustwide/target/debug/deps/libvec_map-1962af1cf64ba77b.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=9c829feae91356d7 -C extra-filename=-9c829feae91356d7 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-f158b7bb2a7040c7.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-451b9a21671e1daf.rmeta --extern unicode_xid=/opt/rustwide/target/debug/deps/libunicode_xid-13b8618e17a25c10.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" "ceadace1d45767740de2a2bdb39ba33edf5a329331d9a89a5eed912f597b2721"`
[INFO] running `"docker" "rm" "-f" "ceadace1d45767740de2a2bdb39ba33edf5a329331d9a89a5eed912f597b2721"`
[INFO] [stdout] ceadace1d45767740de2a2bdb39ba33edf5a329331d9a89a5eed912f597b2721