[INFO] cloning repository https://github.com/hamaluik/mkbook
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/hamaluik/mkbook" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhamaluik%2Fmkbook", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhamaluik%2Fmkbook'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7f8f36183de09278b8d6335aaffd6b4173119835
[INFO] checking hamaluik/mkbook against try#ddfd70ee3c3748e597b32f416b0d15a4f6e37685 for pr-87050
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhamaluik%2Fmkbook" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/hamaluik/mkbook on toolchain ddfd70ee3c3748e597b32f416b0d15a4f6e37685
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/hamaluik/mkbook
[INFO] finished tweaking git repo https://github.com/hamaluik/mkbook
[INFO] tweaked toml for git repo https://github.com/hamaluik/mkbook written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/hamaluik/mkbook already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded sha-1 v0.8.1
[INFO] [stderr]   Downloaded sass-rs v0.2.2
[INFO] [stderr]   Downloaded askama v0.8.0
[INFO] [stderr]   Downloaded typed-arena v1.7.0
[INFO] [stderr]   Downloaded comrak v0.6.2
[INFO] [stderr]   Downloaded ignore v0.4.10
[INFO] [stderr]   Downloaded askama_escape v0.2.0
[INFO] [stderr]   Downloaded askama_derive v0.8.0
[INFO] [stderr]   Downloaded reqwest v0.9.22
[INFO] [stderr]   Downloaded notify v4.0.14
[INFO] [stderr]   Downloaded sass-sys v0.4.15
[INFO] [stderr]   Downloaded pest v2.1.2
[INFO] [stderr]   Downloaded ucd-trie v0.1.2
[INFO] [stderr]   Downloaded pest_meta v2.1.2
[INFO] [stderr]   Downloaded term_size v0.3.1
[INFO] [stderr]   Downloaded pest_generator v2.1.1
[INFO] [stderr]   Downloaded bindgen v0.50.1
[INFO] [stderr]   Downloaded onig v5.0.0
[INFO] [stderr]   Downloaded plist v0.4.2
[INFO] [stderr]   Downloaded smallvec v1.0.0
[INFO] [stderr]   Downloaded onig_sys v69.2.0
[INFO] [stderr]   Downloaded syntect v3.3.0
[INFO] [stderr]   Downloaded askama_shared v0.8.0
[INFO] [stderr]   Downloaded line-wrap v0.1.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8e4e6b3fa88539a297a6e3a38d4ce8523db1627f973b8b97c8a2a3f967e5e1ae
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "8e4e6b3fa88539a297a6e3a38d4ce8523db1627f973b8b97c8a2a3f967e5e1ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8e4e6b3fa88539a297a6e3a38d4ce8523db1627f973b8b97c8a2a3f967e5e1ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8e4e6b3fa88539a297a6e3a38d4ce8523db1627f973b8b97c8a2a3f967e5e1ae", kill_on_drop: false }`
[INFO] [stdout] 8e4e6b3fa88539a297a6e3a38d4ce8523db1627f973b8b97c8a2a3f967e5e1ae
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 62da73c21c0262ddbaba866ab85265ebf9af12f2df030a7d72dc0a9d92c3511d
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "62da73c21c0262ddbaba866ab85265ebf9af12f2df030a7d72dc0a9d92c3511d", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.6
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]     Checking futures v0.1.29
[INFO] [stderr]     Checking either v1.5.3
[INFO] [stderr]    Compiling failure_derive v0.1.6
[INFO] [stderr]     Checking fnv v1.0.6
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]     Checking scopeguard v1.0.0
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]    Compiling glob v0.3.0
[INFO] [stderr]    Compiling rustc-demangle v0.1.16
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling unicode-width v0.1.6
[INFO] [stderr]    Compiling version_check v0.9.1
[INFO] [stderr]     Checking regex-syntax v0.6.12
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling typenum v1.11.2
[INFO] [stderr]    Compiling termcolor v1.0.5
[INFO] [stderr]    Compiling bindgen v0.50.1
[INFO] [stderr]    Compiling vec_map v0.8.1
[INFO] [stderr]    Compiling ansi_term v0.11.0
[INFO] [stderr]    Compiling shlex v0.1.1
[INFO] [stderr]    Compiling ryu v1.0.2
[INFO] [stderr]    Compiling peeking_take_while v0.1.2
[INFO] [stderr]    Compiling ucd-trie v0.1.2
[INFO] [stderr]    Compiling crc32fast v1.2.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.6
[INFO] [stderr]    Compiling maplit v1.0.2
[INFO] [stderr]     Checking lazycell v1.2.1
[INFO] [stderr]    Compiling native-tls v0.2.3
[INFO] [stderr]     Checking adler32 v1.0.4
[INFO] [stderr]     Checking byte-tools v0.3.1
[INFO] [stderr]     Checking linked-hash-map v0.5.2
[INFO] [stderr]     Checking unchecked-index v0.2.2
[INFO] [stderr]     Checking fake-simd v0.1.2
[INFO] [stderr]     Checking opaque-debug v0.2.3
[INFO] [stderr]     Checking typed-arena v1.7.0
[INFO] [stderr]     Checking unicode_categories v0.1.1
[INFO] [stderr]     Checking crossbeam-utils v0.6.6
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking try_from v0.3.2
[INFO] [stderr]     Checking lock_api v0.3.2
[INFO] [stderr]    Compiling humantime v1.3.0
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand_jitter v0.1.4
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling nom v4.2.3
[INFO] [stderr]    Compiling error-chain v0.12.1
[INFO] [stderr]    Compiling num-traits v0.2.10
[INFO] [stderr]    Compiling crossbeam-utils v0.7.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.0
[INFO] [stderr]    Compiling openssl-sys v0.9.53
[INFO] [stderr]    Compiling indexmap v1.3.0
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling bincode v1.2.0
[INFO] [stderr]    Compiling clang-sys v0.28.1
[INFO] [stderr]    Compiling pest v2.1.2
[INFO] [stderr]    Compiling unicase v2.6.0
[INFO] [stderr]     Checking tokio-sync v0.1.7
[INFO] [stderr]     Checking line-wrap v0.1.1
[INFO] [stderr]     Checking miniz_oxide v0.3.5
[INFO] [stderr]     Checking block-padding v0.1.5
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]     Checking memchr v2.2.1
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking idna v0.2.0
[INFO] [stderr]     Checking idna v0.1.5
[INFO] [stderr]     Checking c2-chacha v0.2.3
[INFO] [stderr]     Checking yaml-rust v0.4.3
[INFO] [stderr]     Checking tokio-executor v0.1.9
[INFO] [stderr]     Checking crossbeam-queue v0.1.2
[INFO] [stderr]     Checking crossbeam-channel v0.3.9
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]     Checking encoding_rs v0.8.20
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking num_cpus v1.11.1
[INFO] [stderr]     Checking getrandom v0.1.13
[INFO] [stderr]     Checking term_size v0.3.1
[INFO] [stderr]     Checking rand_os v0.1.3
[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 backtrace-sys v0.1.32
[INFO] [stderr]    Compiling fxhash v0.2.1
[INFO] [stderr]     Checking smallvec v0.6.13
[INFO] [stderr]     Checking aho-corasick v0.7.6
[INFO] [stderr]     Checking bstr v0.2.8
[INFO] [stderr]     Checking twoway v0.2.1
[INFO] [stderr]     Checking tokio-current-thread v0.1.6
[INFO] [stderr]     Checking tokio-timer v0.2.12
[INFO] [stderr]     Checking url v1.7.2
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking colored v1.9.0
[INFO] [stderr]     Checking url v2.1.0
[INFO] [stderr]     Checking futures-cpupool v0.1.8
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking inotify v0.6.1
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]    Compiling regex v1.3.1
[INFO] [stderr]    Compiling memoffset v0.5.3
[INFO] [stderr]    Compiling parking_lot_core v0.6.2
[INFO] [stderr]    Compiling parking_lot v0.9.0
[INFO] [stderr]    Compiling hyper v0.12.35
[INFO] [stderr]    Compiling backtrace v0.3.40
[INFO] [stderr]    Compiling pest_meta v2.1.2
[INFO] [stderr]     Checking flate2 v1.0.13
[INFO] [stderr]    Compiling openssl v0.10.26
[INFO] [stderr]     Checking generic-array v0.12.3
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling sass-sys v0.4.15
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking cookie v0.12.0
[INFO] [stderr]    Compiling syn v1.0.8
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking http v0.1.21
[INFO] [stderr]     Checking string v0.2.1
[INFO] [stderr]     Checking tokio-buf v0.1.1
[INFO] [stderr]    Compiling cexpr v0.3.6
[INFO] [stderr]    Compiling mime_guess v2.0.1
[INFO] [stderr]     Checking block-buffer v0.7.3
[INFO] [stderr]     Checking digest v0.8.1
[INFO] [stderr]     Checking rand v0.7.2
[INFO] [stderr]     Checking sha-1 v0.8.1
[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 embed-bitcode=no -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=7a645ff5ac025be6 -C extra-filename=-7a645ff5ac025be6 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern aho_corasick=/opt/rustwide/target/debug/deps/libaho_corasick-248b6f5b7bdb17c8.rmeta --extern memchr=/opt/rustwide/target/debug/deps/libmemchr-10808b3704594d32.rmeta --extern regex_syntax=/opt/rustwide/target/debug/deps/libregex_syntax-07e196a795c60280.rmeta --extern thread_local=/opt/rustwide/target/debug/deps/libthread_local-c026f58857577118.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 `Command { std: "docker" "inspect" "62da73c21c0262ddbaba866ab85265ebf9af12f2df030a7d72dc0a9d92c3511d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "62da73c21c0262ddbaba866ab85265ebf9af12f2df030a7d72dc0a9d92c3511d", kill_on_drop: false }`
[INFO] [stdout] 62da73c21c0262ddbaba866ab85265ebf9af12f2df030a7d72dc0a9d92c3511d