[INFO] fetching crate mdbook-epub 0.3.0...
[INFO] checking mdbook-epub-0.3.0 against master#33fdb797f59421c7bbecaa4588ed5d7a31a9494a for pr-87190-3
[INFO] extracting crate mdbook-epub 0.3.0 into /workspace/builds/worker-45/source
[INFO] validating manifest of crates.io crate mdbook-epub 0.3.0 on toolchain 33fdb797f59421c7bbecaa4588ed5d7a31a9494a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mdbook-epub 0.3.0
[INFO] finished tweaking crates.io crate mdbook-epub 0.3.0
[INFO] tweaked toml for crates.io crate mdbook-epub 0.3.0 written to /workspace/builds/worker-45/source/Cargo.toml
[INFO] crate crates.io crate mdbook-epub 0.3.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-45/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-45/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" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e65968ed1fff983ce7b7436265486b5ec81fc93bb64c5b02577c1ee6a5ff9e0c
[INFO] running `Command { std: "docker" "start" "-a" "e65968ed1fff983ce7b7436265486b5ec81fc93bb64c5b02577c1ee6a5ff9e0c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e65968ed1fff983ce7b7436265486b5ec81fc93bb64c5b02577c1ee6a5ff9e0c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e65968ed1fff983ce7b7436265486b5ec81fc93bb64c5b02577c1ee6a5ff9e0c", kill_on_drop: false }`
[INFO] [stdout] e65968ed1fff983ce7b7436265486b5ec81fc93bb64c5b02577c1ee6a5ff9e0c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-45/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-45/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" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a65bf7f29f503052b079b1083c6ee4cd13b45cdee3360d41dc0c0f47bef70d36
[INFO] running `Command { std: "docker" "start" "-a" "a65bf7f29f503052b079b1083c6ee4cd13b45cdee3360d41dc0c0f47bef70d36", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.61
[INFO] [stderr]    Compiling autocfg v0.1.5
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling rand_core v0.4.2
[INFO] [stderr]    Compiling cc v1.0.40
[INFO] [stderr]    Compiling siphasher v0.2.3
[INFO] [stderr]    Compiling serde v1.0.98
[INFO] [stderr]     Checking lazy_static v1.3.0
[INFO] [stderr]    Compiling ryu v1.0.0
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]    Compiling string_cache_shared v0.3.0
[INFO] [stderr]     Checking smallvec v0.6.10
[INFO] [stderr]     Checking matches v0.1.8
[INFO] [stderr]    Compiling crc32fast v1.2.0
[INFO] [stderr]     Checking traitobject v0.1.0
[INFO] [stderr]     Checking regex-syntax v0.6.11
[INFO] [stderr]     Checking percent-encoding v1.0.1
[INFO] [stderr]    Compiling typenum v1.10.0
[INFO] [stderr]     Checking adler32 v1.0.3
[INFO] [stderr]    Compiling bitflags v1.1.0
[INFO] [stderr]    Compiling httparse v1.3.4
[INFO] [stderr]     Checking rustc-demangle v0.1.15
[INFO] [stderr]    Compiling itoa v0.4.4
[INFO] [stderr]     Checking new_debug_unreachable v1.0.3
[INFO] [stderr]    Compiling fnv v1.0.6
[INFO] [stderr]    Compiling unicode-segmentation v1.3.0
[INFO] [stderr]     Checking unicode-width v0.1.5
[INFO] [stderr]     Checking safemem v0.3.1
[INFO] [stderr]    Compiling ident_case v1.0.1
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]    Compiling ucd-trie v0.1.2
[INFO] [stderr]     Checking mac v0.1.1
[INFO] [stderr]     Checking ppv-lite86 v0.2.5
[INFO] [stderr]     Checking language-tags v0.2.2
[INFO] [stderr]     Checking precomputed-hash v0.1.1
[INFO] [stderr]     Checking byte-tools v0.3.1
[INFO] [stderr]     Checking slab v0.4.2
[INFO] [stderr]     Checking typeable v0.1.2
[INFO] [stderr]     Checking utf-8 v0.7.5
[INFO] [stderr]    Compiling maplit v1.0.1
[INFO] [stderr]     Checking lazycell v1.2.1
[INFO] [stderr]     Checking podio v0.1.6
[INFO] [stderr]     Checking modifier v0.1.0
[INFO] [stderr]     Checking remove_dir_all v0.5.2
[INFO] [stderr]     Checking sequence_trie v0.3.6
[INFO] [stderr]     Checking rle-decode-fast v1.0.1
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking same-file v1.0.5
[INFO] [stderr]     Checking opaque-debug v0.2.3
[INFO] [stderr]     Checking take_mut v0.2.2
[INFO] [stderr]     Checking fake-simd v0.1.2
[INFO] [stderr]    Compiling pulldown-cmark v0.5.3
[INFO] [stderr]     Checking is-match v0.1.0
[INFO] [stderr]     Checking strum v0.15.0
[INFO] [stderr]     Checking either v1.5.2
[INFO] [stderr]     Checking open v1.3.2
[INFO] [stderr]     Checking shlex v0.1.1
[INFO] [stderr]     Checking semver-parser v0.7.0
[INFO] [stderr]     Checking xml-rs v0.8.0
[INFO] [stderr]     Checking unicode-bidi v0.3.4
[INFO] [stderr]     Checking humantime v1.2.0
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]    Compiling rand_jitter v0.1.4
[INFO] [stderr]     Checking unsafe-any v0.4.2
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling rand_isaac v0.1.1
[INFO] [stderr]    Compiling rand_hc v0.1.0
[INFO] [stderr]    Compiling rand_xorshift v0.1.1
[INFO] [stderr]     Checking unicode-normalization v0.1.8
[INFO] [stderr]    Compiling unicase v1.4.2
[INFO] [stderr]    Compiling unicase v2.4.0
[INFO] [stderr]    Compiling error-chain v0.12.1
[INFO] [stderr]    Compiling heck v0.3.1
[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-0.6.11/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi --crate-type lib --emit=dep-info,metadata -C embed-bitcode=no -C debuginfo=2 -C metadata=61facda7c5bd9d9a -C extra-filename=-61facda7c5bd9d9a --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: build failed
[INFO] running `Command { std: "docker" "inspect" "a65bf7f29f503052b079b1083c6ee4cd13b45cdee3360d41dc0c0f47bef70d36", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a65bf7f29f503052b079b1083c6ee4cd13b45cdee3360d41dc0c0f47bef70d36", kill_on_drop: false }`
[INFO] [stdout] a65bf7f29f503052b079b1083c6ee4cd13b45cdee3360d41dc0c0f47bef70d36