[INFO] fetching crate web-bundler 0.1.3...
[INFO] checking web-bundler-0.1.3 against master#9503ea19edbf01b9435e80e17d60ce1b88390116 for pr-81782
[INFO] extracting crate web-bundler 0.1.3 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate web-bundler 0.1.3 on toolchain 9503ea19edbf01b9435e80e17d60ce1b88390116
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9503ea19edbf01b9435e80e17d60ce1b88390116" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate web-bundler 0.1.3
[INFO] finished tweaking crates.io crate web-bundler 0.1.3
[INFO] tweaked toml for crates.io crate web-bundler 0.1.3 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9503ea19edbf01b9435e80e17d60ce1b88390116" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9503ea19edbf01b9435e80e17d60ce1b88390116" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+9503ea19edbf01b9435e80e17d60ce1b88390116" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 4d4fda19acafbb5b0760b719b29723b9787a00c78c1b72fd03a91a86fff8c795
[INFO] running `Command { std: "docker" "start" "-a" "4d4fda19acafbb5b0760b719b29723b9787a00c78c1b72fd03a91a86fff8c795", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4d4fda19acafbb5b0760b719b29723b9787a00c78c1b72fd03a91a86fff8c795", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4d4fda19acafbb5b0760b719b29723b9787a00c78c1b72fd03a91a86fff8c795", kill_on_drop: false }`
[INFO] [stdout] 4d4fda19acafbb5b0760b719b29723b9787a00c78c1b72fd03a91a86fff8c795
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+9503ea19edbf01b9435e80e17d60ce1b88390116" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 17a8526e98ebf41a916d06106fa303a7a12a8a1b74750b141e4f733295eb78cf
[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" "17a8526e98ebf41a916d06106fa303a7a12a8a1b74750b141e4f733295eb78cf", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.86
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]     Checking itoa v0.4.7
[INFO] [stderr]     Checking slab v0.4.2
[INFO] [stderr]    Compiling getrandom v0.2.2
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]     Checking hashbrown v0.9.1
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]     Checking try-lock v0.2.3
[INFO] [stderr]    Compiling ucd-trie v0.1.3
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling unicode-segmentation v1.7.1
[INFO] [stderr]     Checking smallvec v1.6.1
[INFO] [stderr]     Checking semver-parser v0.7.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]     Checking termcolor v1.1.2
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]     Checking scopeguard v0.3.3
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking hex v0.3.2
[INFO] [stderr]    Compiling anyhow v1.0.38
[INFO] [stderr]     Checking glob v0.2.11
[INFO] [stderr]    Compiling libz-sys v1.1.2
[INFO] [stderr]    Compiling curl-sys v0.4.40+curl-7.75.0
[INFO] [stderr]    Compiling bzip2-sys v0.1.10+1.0.8
[INFO] [stderr]     Checking instant v0.1.9
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking miniz_oxide v0.3.7
[INFO] [stderr]     Checking owning_ref v0.4.1
[INFO] [stderr]     Checking lock_api v0.3.4
[INFO] [stderr]     Checking lock_api v0.4.2
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking tokio-sync v0.1.8
[INFO] [stderr]    Compiling pest v2.1.3
[INFO] [stderr]     Checking humantime v1.3.0
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]     Checking crc32fast v1.2.1
[INFO] [stderr]     Checking encoding_rs v0.8.28
[INFO] [stderr]    Compiling heck v0.3.2
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking bstr v0.2.15
[INFO] [stderr]     Checking rand_chacha v0.1.1
[INFO] [stderr]     Checking lock_api v0.1.5
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling openssl-sys v0.9.60
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling memoffset v0.5.6
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling indexmap v1.6.1
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling crossbeam-utils v0.8.3
[INFO] [stderr]    Compiling syn v1.0.60
[INFO] [stderr]    Compiling aho-corasick v0.7.15
[INFO] [stderr]     Checking want v0.2.0
[INFO] [stderr]     Checking os_type v2.2.0
[INFO] [stderr]     Checking globset v0.4.6
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling pest_meta v2.1.3
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking tokio-executor v0.1.10
[INFO] [stderr]     Checking crossbeam-queue v0.2.3
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking net2 v0.2.37
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking flate2 v1.0.14
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking xattr v0.2.2
[INFO] [stderr]     Checking socket2 v0.3.19
[INFO] [stderr]     Checking rand v0.5.6
[INFO] [stderr]     Checking filetime v0.2.14
[INFO] [stderr]     Checking parking_lot_core v0.8.3
[INFO] [stderr]     Checking terminal_size v0.1.16
[INFO] [stderr]     Checking termios v0.3.3
[INFO] [stderr]     Checking clicolors-control v0.2.0
[INFO] [stderr]     Checking dirs v1.0.5
[INFO] [stderr]     Checking backtrace v0.3.56
[INFO] [stderr]     Checking tokio-current-thread v0.1.7
[INFO] [stderr]     Checking tokio-timer v0.2.13
[INFO] [stderr]     Checking ignore v0.4.17
[INFO] [stderr]    Compiling regex v1.4.3
[INFO] [stderr]     Checking rand_core v0.6.2
[INFO] [stderr]     Checking uuid v0.8.2
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking env_logger v0.5.13
[INFO] [stderr]     Checking crossbeam-deque v0.7.3
[INFO] [stderr]     Checking futures-cpupool v0.1.8
[INFO] [stderr]     Checking mio v0.6.23
[INFO] [stderr]     Checking bzip2 v0.3.3
[INFO] [stderr]     Checking console v0.14.0
[INFO] [stderr]     Checking rand v0.6.5
[INFO] [stderr]     Checking cookie v0.12.0
[INFO] [stderr]    Compiling openssl v0.10.32
[INFO] [stderr]    Compiling native-tls v0.2.7
[INFO] [stderr]     Checking tar v0.4.33
[INFO] [stderr]     Checking parking_lot v0.11.1
[INFO] [stderr]     Checking rand_chacha v0.3.0
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking tokio-io v0.1.13
[INFO] [stderr]     Checking http v0.1.21
[INFO] [stderr]     Checking string v0.2.1
[INFO] [stderr]     Checking tokio-buf v0.1.1
[INFO] [stderr]     Checking tokio-threadpool v0.1.18
[INFO] [stderr]    Compiling sass-sys v0.4.21
[INFO] [stderr]     Checking globwalk v0.8.1
[INFO] [stderr]     Checking tempfile v2.2.0
[INFO] [stderr]     Checking console v0.6.2
[INFO] [stderr]     Checking rand v0.8.3
[INFO] [stderr]     Checking dialoguer v0.3.0
[INFO] [stderr]     Checking uuid v0.7.4
[INFO] [stderr]    Compiling parse-zoneinfo v0.3.0
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]    Compiling pest_generator v2.1.3
[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-1.0.60/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="parsing"' --cfg 'feature="printing"' --cfg 'feature="proc-macro"' --cfg 'feature="quote"' --cfg 'feature="visit"' -C metadata=121eeb6c29ef2742 -C extra-filename=-121eeb6c29ef2742 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-68d422dfc8864dc7.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-cfc781dd86a6c62d.rmeta --extern unicode_xid=/opt/rustwide/target/debug/deps/libunicode_xid-4182131ee577b5da.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" "17a8526e98ebf41a916d06106fa303a7a12a8a1b74750b141e4f733295eb78cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "17a8526e98ebf41a916d06106fa303a7a12a8a1b74750b141e4f733295eb78cf", kill_on_drop: false }`
[INFO] [stdout] 17a8526e98ebf41a916d06106fa303a7a12a8a1b74750b141e4f733295eb78cf