[INFO] fetching crate mdoc 0.3.0...
[INFO] checking mdoc-0.3.0 against master#b3df56a65f9424a7f4af101091582f49cfc29286 for pr-114303
[INFO] extracting crate mdoc 0.3.0 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate mdoc 0.3.0 on toolchain b3df56a65f9424a7f4af101091582f49cfc29286
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b3df56a65f9424a7f4af101091582f49cfc29286" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mdoc 0.3.0
[INFO] finished tweaking crates.io crate mdoc 0.3.0
[INFO] tweaked toml for crates.io crate mdoc 0.3.0 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate crates.io crate mdoc 0.3.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b3df56a65f9424a7f4af101091582f49cfc29286" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tectonic_bridge_icu v0.2.0
[INFO] [stderr]   Downloaded openssl-sys v0.9.70
[INFO] [stderr]   Downloaded reqwest v0.11.6
[INFO] [stderr]   Downloaded tectonic_bridge_freetype2 v0.2.0
[INFO] [stderr]   Downloaded utf8-width v0.1.5
[INFO] [stderr]   Downloaded tectonic_bridge_flate v0.1.5
[INFO] [stderr]   Downloaded tectonic_geturl v0.3.0
[INFO] [stderr]   Downloaded app_dirs2 v2.3.3
[INFO] [stderr]   Downloaded tectonic_errors v0.2.0
[INFO] [stderr]   Downloaded ignore v0.4.17
[INFO] [stderr]   Downloaded watchexec v1.17.1
[INFO] [stderr]   Downloaded tectonic_bridge_core v0.3.0
[INFO] [stderr]   Downloaded globset v0.4.6
[INFO] [stderr]   Downloaded byte-unit v4.0.13
[INFO] [stderr]   Downloaded tectonic_xetex_layout v0.1.1
[INFO] [stderr]   Downloaded terminfo v0.7.3
[INFO] [stderr]   Downloaded clearscreen v1.0.7
[INFO] [stderr]   Downloaded command-group v1.0.8
[INFO] [stderr]   Downloaded rustls v0.20.2
[INFO] [stderr]   Downloaded libz-sys v1.1.3
[INFO] [stderr]   Downloaded tectonic_bridge_harfbuzz v0.2.3
[INFO] [stderr]   Downloaded nix v0.22.0
[INFO] [stderr]   Downloaded tectonic_pdf_io v0.1.2
[INFO] [stderr]   Downloaded tectonic_engine_xetex v0.1.4
[INFO] [stderr]   Downloaded hyper v0.14.14
[INFO] [stderr]   Downloaded serde_json v1.0.70
[INFO] [stderr]   Downloaded tectonic_engine_bibtex v0.1.3
[INFO] [stderr]   Downloaded tectonic_engine_xdvipdfmx v0.1.3
[INFO] [stderr]   Downloaded ureq v2.4.0
[INFO] [stderr]   Downloaded tectonic_dep_support v0.1.0
[INFO] [stderr]   Downloaded tectonic_bridge_graphite2 v0.2.1
[INFO] [stderr]   Downloaded tectonic_bundles v0.2.0
[INFO] [stderr]   Downloaded tectonic_status_base v0.2.0
[INFO] [stderr]   Downloaded tectonic_cfg_support v0.1.3
[INFO] [stderr]   Downloaded tectonic_io_base v0.3.1
[INFO] [stderr]   Downloaded tectonic v0.8.0
[INFO] [stderr]   Downloaded openssl-src v300.0.4+3.0.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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@sha256:5c16f4e6c37141f9fef0bc86f7a492d732943053e42aab8461035881e3f53823" "/opt/rustwide/cargo-home/bin/cargo" "+b3df56a65f9424a7f4af101091582f49cfc29286" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c026d7dafb4c5626fc9cee47e1f11ea3a03d73acf2b6a3c9232cb5bda434b4ee
[INFO] running `Command { std: "docker" "start" "-a" "c026d7dafb4c5626fc9cee47e1f11ea3a03d73acf2b6a3c9232cb5bda434b4ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c026d7dafb4c5626fc9cee47e1f11ea3a03d73acf2b6a3c9232cb5bda434b4ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c026d7dafb4c5626fc9cee47e1f11ea3a03d73acf2b6a3c9232cb5bda434b4ee", kill_on_drop: false }`
[INFO] [stdout] c026d7dafb4c5626fc9cee47e1f11ea3a03d73acf2b6a3c9232cb5bda434b4ee
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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" "RUSTDOCFLAGS=--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@sha256:5c16f4e6c37141f9fef0bc86f7a492d732943053e42aab8461035881e3f53823" "/opt/rustwide/cargo-home/bin/cargo" "+b3df56a65f9424a7f4af101091582f49cfc29286" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7883f4e47c66bff933fa56afcc47df458d0a9e51b218b40136c17060bc5cd220
[INFO] running `Command { std: "docker" "start" "-a" "7883f4e47c66bff933fa56afcc47df458d0a9e51b218b40136c17060bc5cd220", 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.107
[INFO] [stderr]    Compiling cc v1.0.72
[INFO] [stderr]    Compiling pkg-config v0.3.22
[INFO] [stderr]    Compiling proc-macro2 v1.0.32
[INFO] [stderr]    Compiling syn v1.0.81
[INFO] [stderr]    Compiling vcpkg v0.2.15
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]     Checking once_cell v1.8.0
[INFO] [stderr]    Compiling typenum v1.14.0
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling generic-array v0.14.4
[INFO] [stderr]    Compiling crc32fast v1.2.1
[INFO] [stderr]    Compiling anyhow v1.0.45
[INFO] [stderr]    Compiling tectonic_cfg_support v0.1.3
[INFO] [stderr]     Checking pin-project-lite v0.2.7
[INFO] [stderr]     Checking bytes v1.1.0
[INFO] [stderr]     Checking slab v0.4.5
[INFO] [stderr]    Compiling futures-core v0.3.17
[INFO] [stderr]    Compiling tokio v1.14.0
[INFO] [stderr]     Checking opaque-debug v0.3.0
[INFO] [stderr]    Compiling tectonic_dep_support v0.1.0
[INFO] [stderr]    Compiling tectonic_bridge_flate v0.1.5
[INFO] [stderr]    Compiling ppv-lite86 v0.2.15
[INFO] [stderr]    Compiling futures-task v0.3.17
[INFO] [stderr]     Checking cpufeatures v0.2.1
[INFO] [stderr]     Checking itoa v0.4.8
[INFO] [stderr]    Compiling indexmap v1.7.0
[INFO] [stderr]    Compiling futures-util v0.3.17
[INFO] [stderr]    Compiling openssl-src v300.0.4+3.0.1
[INFO] [stderr]     Checking tinyvec_macros v0.1.0
[INFO] [stderr]     Checking matches v0.1.9
[INFO] [stderr]     Checking tectonic_errors v0.2.0
[INFO] [stderr]    Compiling serde_derive v1.0.130
[INFO] [stderr]    Compiling openssl v0.10.38
[INFO] [stderr]     Checking tinyvec v1.5.1
[INFO] [stderr]     Checking tectonic_status_base v0.2.0
[INFO] [stderr]     Checking http v0.2.5
[INFO] [stderr]     Checking tracing-core v0.1.21
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]    Compiling native-tls v0.2.8
[INFO] [stderr]     Checking percent-encoding v2.1.0
[INFO] [stderr]    Compiling futures-channel v0.3.17
[INFO] [stderr]    Compiling httparse v1.5.1
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]     Checking futures-io v0.3.17
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]     Checking hashbrown v0.11.2
[INFO] [stderr]     Checking futures-sink v0.3.17
[INFO] [stderr]     Checking form_urlencoded v1.0.1
[INFO] [stderr]    Compiling tectonic_bridge_graphite2 v0.2.1
[INFO] [stderr]    Compiling tectonic_bridge_icu v0.2.0
[INFO] [stderr]    Compiling tectonic_bridge_freetype2 v0.2.0
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]     Checking tracing v0.1.29
[INFO] [stderr]    Compiling memoffset v0.6.4
[INFO] [stderr]     Checking try-lock v0.2.3
[INFO] [stderr]     Checking unicode-bidi v0.3.7
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand_pcg v0.2.1
[INFO] [stderr]    Compiling libz-sys v1.1.3
[INFO] [stderr]    Compiling tectonic_bridge_core v0.3.0
[INFO] [stderr]    Compiling openssl-sys v0.9.70
[INFO] [stderr]    Compiling tectonic_pdf_io v0.1.2
[INFO] [stderr]    Compiling tectonic_bridge_harfbuzz v0.2.3
[INFO] [stderr]    Compiling ring v0.16.20
[INFO] [stderr]     Checking openssl-probe v0.1.4
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]     Checking unicode-normalization v0.1.19
[INFO] [stderr]    Compiling tectonic_xetex_layout v0.1.1
[INFO] [stderr]     Checking dirs-sys v0.3.6
[INFO] [stderr]     Checking dirs v3.0.2
[INFO] [stderr]     Checking mio v0.7.14
[INFO] [stderr]     Checking flate2 v1.0.22
[INFO] [stderr]     Checking xdg v2.4.0
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking socket2 v0.4.2
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]     Checking app_dirs2 v2.3.3
[INFO] [stderr]     Checking digest v0.9.0
[INFO] [stderr]     Checking block-buffer v0.9.0
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling nom v5.1.2
[INFO] [stderr]     Checking sha2 v0.9.8
[INFO] [stderr]     Checking md-5 v0.9.1
[INFO] [stderr]     Checking httpdate v1.0.1
[INFO] [stderr]    Compiling encoding_rs v0.8.29
[INFO] [stderr]     Checking spin v0.5.2
[INFO] [stderr]     Checking tower-service v0.3.1
[INFO] [stderr]     Checking untrusted v0.7.1
[INFO] [stderr]    Compiling phf_generator v0.8.0
[INFO] [stderr]     Checking net2 v0.2.37
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]    Compiling phf_codegen v0.8.0
[INFO] [stderr]     Checking idna v0.2.3
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking http-body v0.4.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking base64 v0.13.0
[INFO] [stderr]     Checking nix v0.22.0
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]    Compiling terminfo v0.7.3
[INFO] [stderr]     Checking walkdir v2.3.2
[INFO] [stderr]     Checking mio v0.6.23
[INFO] [stderr]     Checking phf v0.8.0
[INFO] [stderr]     Checking dirs v2.0.2
[INFO] [stderr]     Checking inotify-sys v0.1.5
[INFO] [stderr]     Checking url v2.2.2
[INFO] [stderr]    Compiling tectonic_engine_xetex v0.1.4
[INFO] [stderr]    Compiling tectonic_engine_bibtex v0.1.3
[INFO] [stderr]    Compiling tectonic_engine_xdvipdfmx v0.1.3
[INFO] [stderr]    Compiling backtrace v0.3.63
[INFO] [stderr]     Checking bstr v0.2.17
[INFO] [stderr]     Checking mime v0.3.16
[INFO] [stderr]     Checking lazycell v1.3.0
[INFO] [stderr]     Checking gimli v0.26.1
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking ipnet v2.3.1
[INFO] [stderr]    Compiling unicode-segmentation v1.8.0
[INFO] [stderr]     Checking unicode-width v0.1.9
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking which v4.2.2
[INFO] [stderr]     Checking mio-extras v2.0.6
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking globset v0.4.6
[INFO] [stderr]     Checking inotify v0.7.1
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking filetime v0.2.15
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]     Checking object v0.27.1
[INFO] [stderr]    Compiling error-chain v0.12.4
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]     Checking rustc-demangle v0.1.21
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking notify v4.0.17
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]     Checking fs2 v0.4.3
[INFO] [stderr]    Compiling darling_core v0.12.4
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking utf8-width v0.1.5
[INFO] [stderr]     Checking glob v0.3.0
[INFO] [stderr]     Checking pathdiff v0.2.1
[INFO] [stderr]    Compiling tectonic v0.8.0
[INFO] [stderr]     Checking open v1.7.1
[INFO] [stderr]     Checking byte-unit v4.0.13
[INFO] [stderr]     Checking tectonic_xdv v0.1.12
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]     Checking webpki v0.22.0
[INFO] [stderr]     Checking sct v0.7.0
[INFO] [stderr]     Checking thread_local v1.1.3
[INFO] [stderr]     Checking quick-xml v0.22.0
[INFO] [stderr]     Checking termcolor v1.1.2
[INFO] [stderr]     Checking tempfile v3.2.0
[INFO] [stderr]     Checking chunked_transfer v1.4.0
[INFO] [stderr]     Checking rustls v0.20.2
[INFO] [stderr]     Checking webpki-roots v0.22.1
[INFO] [stderr]     Checking ignore v0.4.17
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking dirs v4.0.0
[INFO] [stderr] error: could not compile `syn` (lib)
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/b3df56a65f9424a7f4af101091582f49cfc29286/bin/rustc --crate-name syn --edition=2018 /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/syn-1.0.81/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no --cfg 'feature="clone-impls"' --cfg 'feature="default"' --cfg 'feature="derive"' --cfg 'feature="extra-traits"' --cfg 'feature="full"' --cfg 'feature="parsing"' --cfg 'feature="printing"' --cfg 'feature="proc-macro"' --cfg 'feature="quote"' -C metadata=d5f72650bf530f87 -C extra-filename=-d5f72650bf530f87 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-4acaa884174de1d4.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-d44d810202f36464.rmeta --extern unicode_xid=/opt/rustwide/target/debug/deps/libunicode_xid-afc683de4ca1a6db.rmeta --cap-lints allow --cap-lints=forbid` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "7883f4e47c66bff933fa56afcc47df458d0a9e51b218b40136c17060bc5cd220", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7883f4e47c66bff933fa56afcc47df458d0a9e51b218b40136c17060bc5cd220", kill_on_drop: false }`
[INFO] [stdout] 7883f4e47c66bff933fa56afcc47df458d0a9e51b218b40136c17060bc5cd220