[INFO] fetching crate ckb-extension-fee-estimator 0.1.0...
[INFO] documenting ckb-extension-fee-estimator-0.1.0 against 1.54.0 for beta-1.55-rustdoc-1
[INFO] extracting crate ckb-extension-fee-estimator 0.1.0 into /workspace/builds/worker-71/source
[INFO] validating manifest of crates.io crate ckb-extension-fee-estimator 0.1.0 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 ckb-extension-fee-estimator 0.1.0
[INFO] finished tweaking crates.io crate ckb-extension-fee-estimator 0.1.0
[INFO] tweaked toml for crates.io crate ckb-extension-fee-estimator 0.1.0 written to /workspace/builds/worker-71/source/Cargo.toml
[INFO] crate crates.io crate ckb-extension-fee-estimator 0.1.0 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-71/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-71/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] 02525f6f96cabbd188a3e98a7568f7083b395ed4031282af5e4cb5f3d9da9f03
[INFO] running `Command { std: "docker" "start" "-a" "02525f6f96cabbd188a3e98a7568f7083b395ed4031282af5e4cb5f3d9da9f03", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "02525f6f96cabbd188a3e98a7568f7083b395ed4031282af5e4cb5f3d9da9f03", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "02525f6f96cabbd188a3e98a7568f7083b395ed4031282af5e4cb5f3d9da9f03", kill_on_drop: false }`
[INFO] [stdout] 02525f6f96cabbd188a3e98a7568f7083b395ed4031282af5e4cb5f3d9da9f03
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-71/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-71/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] 98a088596bdf2a49318c04e6127b78d2d9edecca3870dbc69298aa4e8fb2601a
[INFO] running `Command { std: "docker" "start" "-a" "98a088596bdf2a49318c04e6127b78d2d9edecca3870dbc69298aa4e8fb2601a", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.80
[INFO] [stderr]    Compiling syn v1.0.48
[INFO] [stderr]    Compiling serde v1.0.117
[INFO] [stderr]     Checking futures v0.1.30
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling getrandom v0.1.15
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]     Checking slab v0.4.2
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]     Checking itoa v0.4.6
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]     Checking adler v0.2.3
[INFO] [stderr]    Compiling heapsize v0.4.2
[INFO] [stderr]     Checking gimli v0.23.0
[INFO] [stderr]    Compiling serde_json v1.0.59
[INFO] [stderr]    Compiling libm v0.2.1
[INFO] [stderr]     Checking object v0.22.0
[INFO] [stderr]     Checking rustc-demangle v0.1.18
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]     Checking smallvec v1.5.0
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]     Checking once_cell v1.5.2
[INFO] [stderr]    Compiling cc v1.0.63
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]    Compiling faster-hex v0.4.1
[INFO] [stderr]     Checking futures-core v0.3.8
[INFO] [stderr]    Compiling proc-macro-nested v0.1.6
[INFO] [stderr]     Checking regex-syntax v0.6.21
[INFO] [stderr]     Checking futures-sink v0.3.8
[INFO] [stderr]    Compiling httparse v1.3.4
[INFO] [stderr]     Checking rawpointer v0.2.1
[INFO] [stderr]     Checking bit-vec v0.5.1
[INFO] [stderr]    Compiling const_fn v0.4.3
[INFO] [stderr]     Checking percent-encoding v1.0.1
[INFO] [stderr]     Checking futures-io v0.3.8
[INFO] [stderr]     Checking try-lock v0.2.3
[INFO] [stderr]    Compiling anyhow v1.0.34
[INFO] [stderr]     Checking remove_dir_all v0.5.3
[INFO] [stderr]     Checking humantime v2.0.1
[INFO] [stderr]     Checking termcolor v1.1.1
[INFO] [stderr]     Checking pin-project-lite v0.1.11
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]    Compiling miniz_oxide v0.4.3
[INFO] [stderr]     Checking lock_api v0.3.4
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling standback v0.2.13
[INFO] [stderr]     Checking tinyvec v1.0.1
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]     Checking crossbeam-utils v0.6.6
[INFO] [stderr]    Compiling indexmap v1.6.0
[INFO] [stderr]     Checking unicode-bidi v0.3.4
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]    Compiling unicase v2.6.0
[INFO] [stderr]     Checking merkle-cbt v0.3.0
[INFO] [stderr]     Checking instant v0.1.8
[INFO] [stderr]    Compiling time v0.2.23
[INFO] [stderr]     Checking lock_api v0.4.2
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling memoffset v0.5.6
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]     Checking bstr v0.2.14
[INFO] [stderr]     Checking generic-array v0.13.2
[INFO] [stderr]     Checking matrixmultiply v0.2.3
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling synom v0.11.3
[INFO] [stderr]     Checking futures-task v0.3.8
[INFO] [stderr]     Checking crossbeam-channel v0.3.9
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]     Checking tokio-sync v0.1.8
[INFO] [stderr]     Checking futures-channel v0.3.8
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]     Checking unicode-normalization v0.1.16
[INFO] [stderr]     Checking ckb-channel v0.38.0
[INFO] [stderr]     Checking want v0.2.0
[INFO] [stderr]     Checking ckb-logger v0.38.0
[INFO] [stderr]     Checking regex v1.4.2
[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]     Checking smallvec v0.6.13
[INFO] [stderr]    Compiling blake2b-rs v0.1.5
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking net2 v0.2.35
[INFO] [stderr]     Checking parking_lot_core v0.7.2
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking signal-hook-registry v1.2.2
[INFO] [stderr]     Checking parking_lot_core v0.8.0
[INFO] [stderr]     Checking idna v0.1.5
[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-1.0.48/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="clone-impls"' --cfg 'feature="default"' --cfg 'feature="derive"' --cfg 'feature="extra-traits"' --cfg 'feature="fold"' --cfg 'feature="full"' --cfg 'feature="parsing"' --cfg 'feature="printing"' --cfg 'feature="proc-macro"' --cfg 'feature="quote"' --cfg 'feature="visit"' --cfg 'feature="visit-mut"' -C metadata=7efcceb8b32b0b4c -C extra-filename=-7efcceb8b32b0b4c --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-540b6631119ce641.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-2d316e7355c2bd28.rmeta --extern unicode_xid=/opt/rustwide/target/debug/deps/libunicode_xid-12009cf1a2496f6d.rmeta --cap-lints allow --cfg syn_disable_nightly_tests` (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" "98a088596bdf2a49318c04e6127b78d2d9edecca3870dbc69298aa4e8fb2601a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "98a088596bdf2a49318c04e6127b78d2d9edecca3870dbc69298aa4e8fb2601a", kill_on_drop: false }`
[INFO] [stdout] 98a088596bdf2a49318c04e6127b78d2d9edecca3870dbc69298aa4e8fb2601a
