[INFO] cloning repository https://github.com/femnad/gel
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/femnad/gel" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffemnad%2Fgel", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffemnad%2Fgel'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 78a1ae35ea52d0b50c42ce679cd5bc2ea6b41c5f
[INFO] checking femnad/gel against try#6f8a6450478f69b8510c8976ab6c2a70b3b0e47c for pr-84920
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffemnad%2Fgel" "/workspace/builds/worker-14/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/femnad/gel on toolchain 6f8a6450478f69b8510c8976ab6c2a70b3b0e47c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/femnad/gel
[INFO] finished tweaking git repo https://github.com/femnad/gel
[INFO] tweaked toml for git repo https://github.com/femnad/gel written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/femnad/gel already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rental-impl v0.5.4
[INFO] [stderr]   Downloaded getopts v0.2.19
[INFO] [stderr]   Downloaded atomicwrites v0.2.3
[INFO] [stderr]   Downloaded fail v0.2.1
[INFO] [stderr]   Downloaded ego-tree v0.6.0
[INFO] [stderr]   Downloaded parking_lot_core v0.6.1
[INFO] [stderr]   Downloaded scraper v0.10.1
[INFO] [stderr]   Downloaded bitpacking v0.8.0
[INFO] [stderr]   Downloaded scopeguard v0.1.2
[INFO] [stderr]   Downloaded rental v0.5.4
[INFO] [stderr]   Downloaded ascii v0.9.2
[INFO] [stderr]   Downloaded hyper v0.12.32
[INFO] [stderr]   Downloaded owned-read v0.4.0
[INFO] [stderr]   Downloaded variance v0.1.3
[INFO] [stderr]   Downloaded scoped-pool v1.0.0
[INFO] [stderr]   Downloaded once_cell v0.2.3
[INFO] [stderr]   Downloaded tantivy v0.10.0
[INFO] [stderr]   Downloaded census v0.2.0
[INFO] [stderr]   Downloaded rust-stemmers v1.1.0
[INFO] [stderr]   Downloaded fst v0.3.3
[INFO] [stderr]   Downloaded tantivy-fst v0.1.0
[INFO] [stderr]   Downloaded xmlparser v0.9.0
[INFO] [stderr]   Downloaded roxmltree v0.6.1
[INFO] [stderr]   Downloaded cssparser v0.25.8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dc82ec320a6cf42ddc71f2e2a42fd232156b81a5332a0d1b914824d2f706345d
[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" "dc82ec320a6cf42ddc71f2e2a42fd232156b81a5332a0d1b914824d2f706345d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dc82ec320a6cf42ddc71f2e2a42fd232156b81a5332a0d1b914824d2f706345d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dc82ec320a6cf42ddc71f2e2a42fd232156b81a5332a0d1b914824d2f706345d", kill_on_drop: false }`
[INFO] [stdout] dc82ec320a6cf42ddc71f2e2a42fd232156b81a5332a0d1b914824d2f706345d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", 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] 0fa12f60abc477f30843ca1db1e461b4b3b8941bfccd36b2786db8885746d64f
[INFO] running `Command { std: "docker" "start" "-a" "0fa12f60abc477f30843ca1db1e461b4b3b8941bfccd36b2786db8885746d64f", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.59
[INFO] [stderr]    Compiling autocfg v0.1.4
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]     Checking spin v0.5.0
[INFO] [stderr]    Compiling rand_core v0.4.0
[INFO] [stderr]    Compiling siphasher v0.2.3
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]    Compiling serde v1.0.94
[INFO] [stderr]    Compiling string_cache_shared v0.3.0
[INFO] [stderr]    Compiling bitflags v1.1.0
[INFO] [stderr]     Checking slab v0.4.2
[INFO] [stderr]     Checking matches v0.1.8
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]     Checking mac v0.1.1
[INFO] [stderr]     Checking precomputed-hash v0.1.1
[INFO] [stderr]     Checking utf-8 v0.7.5
[INFO] [stderr]    Compiling httparse v1.3.4
[INFO] [stderr]    Compiling openssl v0.10.23
[INFO] [stderr]     Checking foreign-types-shared v0.1.1
[INFO] [stderr]     Checking unicode-width v0.1.5
[INFO] [stderr]    Compiling procedural-masquerade v0.1.6
[INFO] [stderr]     Checking remove_dir_all v0.5.2
[INFO] [stderr]     Checking openssl-probe v0.1.2
[INFO] [stderr]     Checking same-file v1.0.5
[INFO] [stderr]     Checking ascii v0.9.2
[INFO] [stderr]     Checking regex-syntax v0.4.2
[INFO] [stderr]     Checking thin-slice v0.1.1
[INFO] [stderr]     Checking scopeguard v0.1.2
[INFO] [stderr]     Checking variance v0.1.3
[INFO] [stderr]     Checking downcast-rs v1.0.4
[INFO] [stderr]     Checking xmlparser v0.9.0
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking census v0.2.0
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking try_from v0.3.2
[INFO] [stderr]    Compiling backtrace-sys v0.1.30
[INFO] [stderr]    Compiling miniz_oxide_c_api v0.2.2
[INFO] [stderr]     Checking servo_arc v0.1.1
[INFO] [stderr]     Checking itertools v0.8.0
[INFO] [stderr]     Checking tokio-sync v0.1.6
[INFO] [stderr]     Checking unicode-bidi v0.3.4
[INFO] [stderr]     Checking dtoa-short v0.3.2
[INFO] [stderr]     Checking regex-syntax v0.6.8
[INFO] [stderr]     Checking futf v0.1.4
[INFO] [stderr]     Checking lazy_static v1.3.0
[INFO] [stderr]     Checking unreachable v1.0.0
[INFO] [stderr]    Compiling rand_jitter v0.1.4
[INFO] [stderr]     Checking foreign-types v0.3.2
[INFO] [stderr]     Checking miniz_oxide v0.2.2
[INFO] [stderr]     Checking lock_api v0.3.1
[INFO] [stderr]     Checking getopts v0.2.19
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking walkdir v2.2.8
[INFO] [stderr]    Compiling unicase v1.4.2
[INFO] [stderr]    Compiling error-chain v0.12.1
[INFO] [stderr]    Compiling unicase v2.4.0
[INFO] [stderr]     Checking log v0.4.7
[INFO] [stderr]    Compiling ryu v1.0.0
[INFO] [stderr]     Checking scoped-pool v1.0.0
[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 openssl-sys v0.9.47
[INFO] [stderr]    Compiling rand_chacha v0.2.0
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]     Checking arrayvec v0.4.11
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking crc32fast v1.2.0
[INFO] [stderr]     Checking crunchy v0.2.2
[INFO] [stderr]     Checking crossbeam-utils v0.6.5
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking c2-chacha v0.2.2
[INFO] [stderr]     Checking encoding_rs v0.8.17
[INFO] [stderr]     Checking roxmltree v0.6.1
[INFO] [stderr]     Checking tendril v0.4.1
[INFO] [stderr]    Compiling parking_lot_core v0.4.0
[INFO] [stderr]    Compiling parking_lot_core v0.3.1
[INFO] [stderr]    Compiling parking_lot_core v0.6.1
[INFO] [stderr]    Compiling hyper v0.12.32
[INFO] [stderr]    Compiling parking_lot v0.9.0
[INFO] [stderr]     Checking idna v0.1.5
[INFO] [stderr]     Checking want v0.2.0
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]     Checking bitpacking v0.8.0
[INFO] [stderr]    Compiling syn v0.15.39
[INFO] [stderr]     Checking tokio-executor v0.1.8
[INFO] [stderr]     Checking crossbeam-epoch v0.7.1
[INFO] [stderr]     Checking crossbeam-queue v0.1.2
[INFO] [stderr]     Checking crossbeam-channel v0.3.8
[INFO] [stderr]     Checking crossbeam-epoch v0.6.1
[INFO] [stderr]     Checking iovec v0.1.2
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking num_cpus v1.10.1
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking getrandom v0.1.6
[INFO] [stderr]     Checking rand v0.5.6
[INFO] [stderr]     Checking inotify-sys v0.1.3
[INFO] [stderr]     Checking filetime v0.2.5
[INFO] [stderr]     Checking nix v0.14.1
[INFO] [stderr]     Checking fs2 v0.4.3
[INFO] [stderr]     Checking atty v0.2.13
[INFO] [stderr]     Checking memmap v0.7.0
[INFO] [stderr]     Checking dirs-sys v0.3.3
[INFO] [stderr]     Checking aho-corasick v0.7.4
[INFO] [stderr]    Compiling native-tls v0.2.3
[INFO] [stderr]     Checking url v1.7.2
[INFO] [stderr]     Checking fst v0.3.3
[INFO] [stderr]     Checking base64 v0.10.1
[INFO] [stderr]     Checking fxhash v0.2.1
[INFO] [stderr]     Checking murmurhash32 v0.2.0
[INFO] [stderr]     Checking combine v3.8.1
[INFO] [stderr]     Checking snap v0.2.5
[INFO] [stderr]     Checking tokio-current-thread v0.1.6
[INFO] [stderr]     Checking tokio-timer v0.2.11
[INFO] [stderr]    Compiling phf_shared v0.7.24
[INFO] [stderr]     Checking crossbeam-deque v0.7.1
[INFO] [stderr]     Checking crossbeam-deque v0.6.3
[INFO] [stderr]     Checking mime v0.3.13
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking futures-cpupool v0.1.8
[INFO] [stderr]     Checking mio v0.6.19
[INFO] [stderr]     Checking rand_core v0.5.0
[INFO] [stderr]     Checking inotify v0.6.1
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking tempdir v0.3.7
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking dirs v2.0.1
[INFO] [stderr]     Checking flate2 v1.0.9
[INFO] [stderr]     Checking backtrace v0.3.32
[INFO] [stderr]     Checking regex v1.1.9
[INFO] [stderr]     Checking cookie v0.12.0
[INFO] [stderr]     Checking levenshtein_automata v0.1.1
[INFO] [stderr]     Checking phf v0.7.24
[INFO] [stderr]     Checking fail v0.2.1
[INFO] [stderr]     Checking tokio-io v0.1.12
[INFO] [stderr]     Checking http v0.1.17
[INFO] [stderr]     Checking string v0.2.1
[INFO] [stderr]     Checking tokio-buf v0.1.1
[INFO] [stderr]     Checking once_cell v0.2.3
[INFO] [stderr]     Checking tantivy-fst v0.1.0
[INFO] [stderr]     Checking chrono v0.4.7
[INFO] [stderr]     Checking mio-extras v2.0.5
[INFO] [stderr]    Compiling phf_generator v0.7.24
[INFO] [stderr]     Checking rand v0.7.0
[INFO] [stderr]     Checking parking_lot v0.6.4
[INFO] [stderr]     Checking tokio-threadpool v0.1.15
[INFO] [stderr]    Compiling phf_codegen v0.7.24
[INFO] [stderr]    Compiling string_cache_codegen v0.4.2
[INFO] [stderr]     Checking notify v4.0.12
[INFO] [stderr]     Checking crossbeam v0.5.0
[INFO] [stderr]     Checking publicsuffix v1.5.2
[INFO] [stderr]     Checking parking_lot v0.7.1
[INFO] [stderr]    Compiling mime_guess v2.0.0-alpha.6
[INFO] [stderr]    Compiling selectors v0.21.0
[INFO] [stderr]     Checking tokio-reactor v0.1.9
[INFO] [stderr] error: could not compile `syn`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name syn /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/syn-0.15.39/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"' -C metadata=99674905c0cc66dc -C extra-filename=-99674905c0cc66dc --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-50111b8f7188482d.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-4972d66cc4bf7970.rmeta --extern unicode_xid=/opt/rustwide/target/debug/deps/libunicode_xid-a81338cd23b23cba.rmeta --cap-lints allow --cap-lints=forbid --cfg syn_can_match_trailing_dollar --cfg syn_can_use_thread_id --cfg syn_can_use_associated_constants --cfg syn_can_call_macro_by_path` (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" "0fa12f60abc477f30843ca1db1e461b4b3b8941bfccd36b2786db8885746d64f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0fa12f60abc477f30843ca1db1e461b4b3b8941bfccd36b2786db8885746d64f", kill_on_drop: false }`
[INFO] [stdout] 0fa12f60abc477f30843ca1db1e461b4b3b8941bfccd36b2786db8885746d64f