[INFO] cloning repository https://github.com/e1810/diff_visualize
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/e1810/diff_visualize" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fe1810%2Fdiff_visualize", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fe1810%2Fdiff_visualize'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 906000254cae9efe76f81a566c00b55ab38fa4cc
[INFO] documenting e1810/diff_visualize against 1.54.0 for beta-1.55-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fe1810%2Fdiff_visualize" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/e1810/diff_visualize 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 git repo https://github.com/e1810/diff_visualize
[INFO] finished tweaking git repo https://github.com/e1810/diff_visualize
[INFO] tweaked toml for git repo https://github.com/e1810/diff_visualize written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/e1810/diff_visualize 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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded askama_escape v0.10.1
[INFO] [stderr]   Downloaded wasm-bindgen-shared v0.2.71
[INFO] [stderr]   Downloaded buf-min v0.4.0
[INFO] [stderr]   Downloaded actix-rt v2.1.0
[INFO] [stderr]   Downloaded askama_shared v0.11.1
[INFO] [stderr]   Downloaded tokio v1.2.0
[INFO] [stderr]   Downloaded askama v0.10.5
[INFO] [stderr]   Downloaded utf8-width v0.1.4
[INFO] [stderr]   Downloaded mio v0.7.9
[INFO] [stderr]   Downloaded v_escape v0.15.0
[INFO] [stderr]   Downloaded trust-dns-resolver v0.19.6
[INFO] [stderr]   Downloaded wasm-bindgen-macro-support v0.2.71
[INFO] [stderr]   Downloaded trust-dns-proto v0.19.6
[INFO] [stderr]   Downloaded sha-1 v0.9.4
[INFO] [stderr]   Downloaded once_cell v1.7.0
[INFO] [stderr]   Downloaded lexical-core v0.7.5
[INFO] [stderr]   Downloaded standback v0.2.15
[INFO] [stderr]   Downloaded time v0.2.25
[INFO] [stderr]   Downloaded byteorder v1.4.2
[INFO] [stderr]   Downloaded wasm-bindgen-backend v0.2.71
[INFO] [stderr]   Downloaded wasm-bindgen-macro v0.2.71
[INFO] [stderr]   Downloaded wasm-bindgen v0.2.71
[INFO] [stderr]   Downloaded askama_derive v0.10.5
[INFO] [stderr]   Downloaded nom v6.1.2
[INFO] [stderr]   Downloaded backtrace v0.3.56
[INFO] [stderr]   Downloaded html-escape v0.2.6
[INFO] [stderr]   Downloaded v_htmlescape v0.12.0
[INFO] [stderr]   Downloaded actix-files v0.5.0
[INFO] [stderr]   Downloaded actix-macros v0.2.0
[INFO] [stderr]   Downloaded addr2line v0.14.1
[INFO] [stderr]   Downloaded cookie v0.14.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 55bf5621eb55aaf57ea26ad0119e945ff6368d64964540882896e5a3b4104f23
[INFO] running `Command { std: "docker" "start" "-a" "55bf5621eb55aaf57ea26ad0119e945ff6368d64964540882896e5a3b4104f23", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "55bf5621eb55aaf57ea26ad0119e945ff6368d64964540882896e5a3b4104f23", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "55bf5621eb55aaf57ea26ad0119e945ff6368d64964540882896e5a3b4104f23", kill_on_drop: false }`
[INFO] [stdout] 55bf5621eb55aaf57ea26ad0119e945ff6368d64964540882896e5a3b4104f23
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] db1425080b2b89ef6773fb3d6fe104a2d07b9e1bfc72665667cf9ea0a495c34a
[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" "db1425080b2b89ef6773fb3d6fe104a2d07b9e1bfc72665667cf9ea0a495c34a", kill_on_drop: false }`
[INFO] [stderr]     Checking utf8-width v0.1.4
[INFO] [stderr]    Compiling tokio v1.2.0
[INFO] [stderr]     Checking thread_local v1.1.3
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking net2 v0.2.37
[INFO] [stderr]     Checking hostname v0.3.1
[INFO] [stderr]     Checking tracing v0.1.25
[INFO] [stderr]     Checking brotli-sys v0.3.2
[INFO] [stderr]     Checking threadpool v1.8.1
[INFO] [stderr]    Compiling pin-project-internal v0.4.27
[INFO] [stderr]    Compiling derive_more v0.99.11
[INFO] [stderr]    Compiling actix-macros v0.1.3
[INFO] [stderr]    Compiling enum-as-inner v0.3.3
[INFO] [stderr]     Checking backtrace v0.3.56
[INFO] [stderr]     Checking flate2 v1.0.20
[INFO] [stderr]     Checking syn v1.0.60
[INFO] [stderr]    Compiling actix-web-codegen v0.4.0
[INFO] [stderr]    Compiling actix-macros v0.2.0
[INFO] [stderr]     Checking futures-util v0.3.13
[INFO] [stderr]     Checking serde v1.0.123
[INFO] [stderr]    Compiling v_escape_derive v0.8.4
[INFO] [stderr]     Checking html-escape v0.2.6
[INFO] [stderr]     Checking resolv-conf v0.7.0
[INFO] [stderr]     Checking brotli2 v0.3.2
[INFO] [stderr]     Checking regex v1.4.3
[INFO] [stderr]     Checking tracing-futures v0.2.5
[INFO] [stderr]     Checking time v0.2.25
[INFO] [stderr]     Checking mio v0.6.23
[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 --crate-type lib --emit=dep-info,metadata -C embed-bitcode=no -C debuginfo=2 --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"' --cfg 'feature="visit"' --cfg 'feature="visit-mut"' -C metadata=3a73bb7bffcd2229 -C extra-filename=-3a73bb7bffcd2229 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-484e607ee4bcf719.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-bf01aab4f065b101.rmeta --extern unicode_xid=/opt/rustwide/target/debug/deps/libunicode_xid-063579dc8d605135.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" "db1425080b2b89ef6773fb3d6fe104a2d07b9e1bfc72665667cf9ea0a495c34a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "db1425080b2b89ef6773fb3d6fe104a2d07b9e1bfc72665667cf9ea0a495c34a", kill_on_drop: false }`
[INFO] [stdout] db1425080b2b89ef6773fb3d6fe104a2d07b9e1bfc72665667cf9ea0a495c34a
