[INFO] fetching crate rrss2imap 0.3.0...
[INFO] documenting rrss2imap-0.3.0 against 1.54.0 for beta-1.55-rustdoc-1
[INFO] extracting crate rrss2imap 0.3.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate rrss2imap 0.3.0 on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rrss2imap 0.3.0
[INFO] finished tweaking crates.io crate rrss2imap 0.3.0
[INFO] tweaked toml for crates.io crate rrss2imap 0.3.0 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate crates.io crate rrss2imap 0.3.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "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-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" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 32358afc6b9d387966d7c72f8897f1c12684fc20e47da622351ab85d2514ba93
[INFO] running `Command { std: "docker" "start" "-a" "32358afc6b9d387966d7c72f8897f1c12684fc20e47da622351ab85d2514ba93", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "32358afc6b9d387966d7c72f8897f1c12684fc20e47da622351ab85d2514ba93", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "32358afc6b9d387966d7c72f8897f1c12684fc20e47da622351ab85d2514ba93", kill_on_drop: false }`
[INFO] [stdout] 32358afc6b9d387966d7c72f8897f1c12684fc20e47da622351ab85d2514ba93
[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" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "+1.54.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 517f1662412e82a1d2a29cddc3e0ccec6af93b93840a76a477532c1b4caa3994
[INFO] running `Command { std: "docker" "start" "-a" "517f1662412e82a1d2a29cddc3e0ccec6af93b93840a76a477532c1b4caa3994", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.80
[INFO] [stderr]    Compiling autocfg v0.1.6
[INFO] [stderr]    Compiling syn v1.0.48
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling rand_core v0.4.2
[INFO] [stderr]     Checking smallvec v0.6.10
[INFO] [stderr]    Compiling serde v1.0.99
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]    Compiling cc v1.0.41
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking futures v0.1.28
[INFO] [stderr]     Checking fnv v1.0.6
[INFO] [stderr]    Compiling siphasher v0.2.3
[INFO] [stderr]     Checking stable_deref_trait v1.1.1
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]     Checking either v1.5.2
[INFO] [stderr]     Checking itoa v0.4.4
[INFO] [stderr]     Checking regex-syntax v0.6.20
[INFO] [stderr]    Compiling ryu v1.0.0
[INFO] [stderr]     Checking futures-core v0.3.7
[INFO] [stderr]    Compiling pkg-config v0.3.15
[INFO] [stderr]     Checking scopeguard v0.3.3
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]    Compiling string_cache_shared v0.3.0
[INFO] [stderr]     Checking once_cell v1.4.1
[INFO] [stderr]     Checking rustc-demangle v0.1.16
[INFO] [stderr]     Checking futures-io v0.3.7
[INFO] [stderr]     Checking cache-padded v1.1.1
[INFO] [stderr]    Compiling httparse v1.3.4
[INFO] [stderr]     Checking percent-encoding v1.0.1
[INFO] [stderr]    Compiling encoding_rs v0.8.24
[INFO] [stderr]     Checking dtoa v0.4.4
[INFO] [stderr]     Checking new_debug_unreachable v1.0.3
[INFO] [stderr]    Compiling strsim v0.9.3
[INFO] [stderr]    Compiling openssl v0.10.24
[INFO] [stderr]    Compiling ident_case v1.0.1
[INFO] [stderr]    Compiling getrandom v0.1.11
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]     Checking fastrand v1.4.0
[INFO] [stderr]     Checking pin-project-lite v0.1.11
[INFO] [stderr]     Checking try-lock v0.2.2
[INFO] [stderr]     Checking indexmap v1.1.0
[INFO] [stderr]     Checking mac v0.1.1
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[INFO] [stderr]    Compiling native-tls v0.2.3
[INFO] [stderr]     Checking parking v2.0.0
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]     Checking waker-fn v1.1.0
[INFO] [stderr]     Checking precomputed-hash v0.1.1
[INFO] [stderr]    Compiling ucd-trie v0.1.2
[INFO] [stderr]     Checking same-file v1.0.5
[INFO] [stderr]     Checking event-listener v2.5.1
[INFO] [stderr]    Compiling procedural-masquerade v0.1.7
[INFO] [stderr]    Compiling maplit v1.0.2
[INFO] [stderr]     Checking unic-char-range v0.9.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.5
[INFO] [stderr]     Checking unic-common v0.9.0
[INFO] [stderr]     Checking utf-8 v0.7.5
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]     Checking futures-sink v0.3.7
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stderr]     Checking nodrop v0.1.13
[INFO] [stderr]     Checking unicode-width v0.1.6
[INFO] [stderr]     Checking vec-arena v0.5.2
[INFO] [stderr]     Checking async-task v3.0.0
[INFO] [stderr]     Checking ucd-util v0.1.5
[INFO] [stderr]     Checking adler v0.2.3
[INFO] [stderr]    Compiling derive_builder v0.5.1
[INFO] [stderr]    Compiling derive_builder v0.9.0
[INFO] [stderr]    Compiling unicode-segmentation v1.3.0
[INFO] [stderr]     Checking parking v1.0.6
[INFO] [stderr]     Checking remove_dir_all v0.5.2
[INFO] [stderr]     Checking fixedbitset v0.1.9
[INFO] [stderr]     Checking scoped-tls v1.0.0
[INFO] [stderr]     Checking thin-slice v0.1.1
[INFO] [stderr]     Checking atomic-waker v1.0.0
[INFO] [stderr]     Checking utf8-ranges v1.0.4
[INFO] [stderr]     Checking ordermap v0.3.5
[INFO] [stderr]     Checking deunicode v0.4.3
[INFO] [stderr]     Checking arc-swap v0.4.7
[INFO] [stderr]     Checking language-tags v0.2.2
[INFO] [stderr]     Checking humansize v1.1.0
[INFO] [stderr]     Checking xml-rs v0.8.0
[INFO] [stderr]     Checking bufstream v0.1.4
[INFO] [stderr]     Checking yansi v0.5.0
[INFO] [stderr]     Checking quoted_printable v0.4.1
[INFO] [stderr]     Checking nom v2.2.1
[INFO] [stderr]     Checking termcolor v0.3.6
[INFO] [stderr]     Checking bytes v0.5.2
[INFO] [stderr]     Checking unidecode v0.3.0
[INFO] [stderr]     Checking base64 v0.11.0
[INFO] [stderr]     Checking xhtmlchardet v2.1.0
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[INFO] [stderr]     Checking crossbeam-utils v0.6.6
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling thread_local v1.0.1
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]    Compiling miniz_oxide v0.4.3
[INFO] [stderr]     Checking try_from v0.3.2
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling parking_lot_core v0.4.0
[INFO] [stderr]    Compiling memoffset v0.5.1
[INFO] [stderr]    Compiling hyper v0.12.33
[INFO] [stderr]    Compiling phf_shared v0.7.24
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]    Compiling rand_jitter v0.1.4
[INFO] [stderr]    Compiling synom v0.11.3
[INFO] [stderr]     Checking unicode-normalization v0.1.8
[INFO] [stderr]     Checking futures-task v0.3.7
[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 crossbeam-epoch v0.8.0
[INFO] [stderr]     Checking unic-char-property v0.9.0
[INFO] [stderr]     Checking walkdir v2.2.9
[INFO] [stderr]    Compiling error-chain v0.12.4
[INFO] [stderr]     Checking futf v0.1.4
[INFO] [stderr]     Checking unic-ucd-version v0.9.0
[INFO] [stderr]     Checking c2-chacha v0.2.2
[INFO] [stderr]     Checking concurrent-queue v1.2.2
[INFO] [stderr]     Checking dtoa-short v0.3.2
[INFO] [stderr]     Checking futures-channel v0.3.7
[INFO] [stderr]     Checking regex-syntax v0.5.6
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking pest v2.1.1
[INFO] [stderr]     Checking async-mutex v1.4.0
[INFO] [stderr]    Compiling rand_hc v0.1.0
[INFO] [stderr]    Compiling rand_isaac v0.1.1
[INFO] [stderr]    Compiling rand_xorshift v0.1.1
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]     Checking tokio-sync v0.1.6
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]     Checking phf v0.7.24
[INFO] [stderr]    Compiling unicase v2.4.0
[INFO] [stderr]    Compiling nom v4.2.3
[INFO] [stderr]     Checking slug v0.1.4
[INFO] [stderr]     Checking owning_ref v0.4.0
[INFO] [stderr]     Checking owning_ref v0.3.3
[INFO] [stderr]     Checking servo_arc v0.1.1
[INFO] [stderr]     Checking unic-ucd-segment v0.9.0
[INFO] [stderr]     Checking aho-corasick v0.7.6
[INFO] [stderr]     Checking tokio-executor v0.1.8
[INFO] [stderr]     Checking crossbeam-queue v0.1.2
[INFO] [stderr]     Checking futures-lite v0.1.11
[INFO] [stderr]     Checking bstr v0.2.8
[INFO] [stderr]     Checking crossbeam-channel v0.3.9
[INFO] [stderr]     Checking aho-corasick v0.6.10
[INFO] [stderr]     Checking tendril v0.4.1
[INFO] [stderr]     Checking petgraph v0.4.13
[INFO] [stderr]     Checking lock_api v0.1.5
[INFO] [stderr]     Checking async-channel v1.5.1
[INFO] [stderr]     Checking multitask v0.2.0
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking idna v0.1.5
[INFO] [stderr]     Checking idna v0.2.0
[INFO] [stderr]    Compiling backtrace-sys v0.1.31
[INFO] [stderr]    Compiling openssl-sys v0.9.49
[INFO] [stderr]     Checking tokio-timer v0.2.11
[INFO] [stderr]     Checking tokio-current-thread v0.1.6
[INFO] [stderr]     Checking base64 v0.10.1
[INFO] [stderr]     Checking fxhash v0.2.1
[INFO] [stderr]     Checking want v0.2.0
[INFO] [stderr]     Checking kv-log-macro v1.0.7
[INFO] [stderr]    Compiling quote v0.6.13
[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-0.6.20/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="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=9314dde5e883aab1 -C extra-filename=-9314dde5e883aab1 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --cap-lints allow` (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" "517f1662412e82a1d2a29cddc3e0ccec6af93b93840a76a477532c1b4caa3994", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "517f1662412e82a1d2a29cddc3e0ccec6af93b93840a76a477532c1b4caa3994", kill_on_drop: false }`
[INFO] [stdout] 517f1662412e82a1d2a29cddc3e0ccec6af93b93840a76a477532c1b4caa3994
