[INFO] cloning repository https://github.com/Keats/webrust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Keats/webrust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKeats%2Fwebrust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKeats%2Fwebrust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2dae79ab398d9cbf705365f10793e7734427a876
[INFO] documenting Keats/webrust against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKeats%2Fwebrust" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Keats/webrust on toolchain beta-2020-08-29
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Keats/webrust
[INFO] finished tweaking git repo https://github.com/Keats/webrust
[INFO] tweaked toml for git repo https://github.com/Keats/webrust written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/Keats/webrust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] error: the lock file /workspace/builds/worker-8/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag.
[INFO] the lockfile is outdated, regenerating it
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded mime_guess v1.8.8
[INFO] [stderr]   Downloaded itoa v0.4.6
[INFO] [stderr]   Downloaded safemem v0.3.3
[INFO] [stderr]   Downloaded r2d2_postgres v0.16.0
[INFO] [stderr]   Downloaded persistent v0.4.0
[INFO] [stderr]   Downloaded async-trait v0.1.40
[INFO] [stderr]   Downloaded scheduled-thread-pool v0.2.5
[INFO] [stderr]   Downloaded mio-uds v0.6.8
[INFO] [stderr]   Downloaded net2 v0.2.34
[INFO] [stderr]   Downloaded fallible-iterator v0.2.0
[INFO] [stderr]   Downloaded proc-macro-hack v0.5.18
[INFO] [stderr]   Downloaded pin-project v0.4.23
[INFO] [stderr]   Downloaded postgres-protocol v0.5.2
[INFO] [stderr]   Downloaded futures v0.3.5
[INFO] [stderr]   Downloaded siphasher v0.3.3
[INFO] [stderr]   Downloaded futures-util v0.3.5
[INFO] [stderr]   Downloaded phf_shared v0.8.0
[INFO] [stderr]   Downloaded pin-project-internal v0.4.23
[INFO] [stderr]   Downloaded futures-task v0.3.5
[INFO] [stderr]   Downloaded subtle v2.2.3
[INFO] [stderr]   Downloaded cloudabi v0.1.0
[INFO] [stderr]   Downloaded quasi v0.20.1
[INFO] [stderr]   Downloaded route-recognizer v0.1.13
[INFO] [stderr]   Downloaded futures-macro v0.3.5
[INFO] [stderr]   Downloaded byteorder v0.4.2
[INFO] [stderr]   Downloaded postgres v0.10.2
[INFO] [stderr]   Downloaded bytes v0.5.6
[INFO] [stderr]   Downloaded quasi_codegen v0.20.0
[INFO] [stderr]   Downloaded parking_lot_core v0.8.0
[INFO] [stderr]   Downloaded crypto-mac v0.8.0
[INFO] [stderr]   Downloaded proc-macro-nested v0.1.6
[INFO] [stderr]   Downloaded ppv-lite86 v0.2.9
[INFO] [stderr]   Downloaded pin-project-lite v0.1.7
[INFO] [stderr]   Downloaded serde_macros v0.8.9
[INFO] [stderr]   Downloaded serde_codegen v0.8.9
[INFO] [stderr]   Downloaded quasi_macros v0.20.0
[INFO] [stderr]   Downloaded tinyvec v0.3.4
[INFO] [stderr]   Downloaded tokio-postgres v0.5.5
[INFO] [stderr]   Downloaded tokio v0.2.22
[INFO] [stderr]   Downloaded base64 v0.12.3
[INFO] [stderr]   Downloaded serde_codegen_internals v0.8.9
[INFO] [stderr]   Downloaded aster v0.27.0
[INFO] [stderr]   Downloaded phf v0.8.0
[INFO] [stderr]   Downloaded hmac v0.8.1
[INFO] [stderr]   Downloaded md5 v0.7.0
[INFO] [stderr]   Downloaded futures-sink v0.3.5
[INFO] [stderr]   Downloaded futures-core v0.3.5
[INFO] [stderr]   Downloaded mio v0.6.22
[INFO] [stderr]   Downloaded stringprep v0.1.2
[INFO] [stderr]   Downloaded postgres-types v0.1.2
[INFO] [stderr]   Downloaded lock_api v0.4.1
[INFO] [stderr]   Downloaded instant v0.1.6
[INFO] [stderr]   Downloaded smallvec v1.4.2
[INFO] [stderr]   Downloaded parking_lot v0.11.0
[INFO] [stderr]   Downloaded ryu v1.0.5
[INFO] [stderr]   Downloaded futures-executor v0.3.5
[INFO] [stderr]   Downloaded futures-channel v0.3.5
[INFO] [stderr]   Downloaded postgres v0.17.5
[INFO] [stderr]   Downloaded bufstream v0.1.4
[INFO] [stderr]   Downloaded futures-io v0.3.5
[INFO] [stderr]   Downloaded r2d2 v0.8.9
[INFO] [stderr]   Downloaded hyper v0.10.16
[INFO] [stderr]   Downloaded typeable v0.1.2
[INFO] [stderr]   Downloaded mime v0.2.6
[INFO] [stderr]   Downloaded unicode-normalization v0.1.13
[INFO] [stderr]   Downloaded serde_json v1.0.57
[INFO] [stderr]   Downloaded modifier v0.1.0
[INFO] [stderr]   Downloaded plugin v0.2.6
[INFO] [stderr]   Downloaded iron v0.6.1
[INFO] [stderr]   Downloaded router v0.6.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-08-29" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ce4e64da81659fc776669509b731b97557315a0a171dd84ed5c9ac538dad8f2b
[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" "ce4e64da81659fc776669509b731b97557315a0a171dd84ed5c9ac538dad8f2b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ce4e64da81659fc776669509b731b97557315a0a171dd84ed5c9ac538dad8f2b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ce4e64da81659fc776669509b731b97557315a0a171dd84ed5c9ac538dad8f2b", kill_on_drop: false }`
[INFO] [stdout] ce4e64da81659fc776669509b731b97557315a0a171dd84ed5c9ac538dad8f2b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-08-29" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 300905c1e3e84bb6175194d0f9ff0ef60ed244336ceac2eadb2877a1dc20048d
[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" "300905c1e3e84bb6175194d0f9ff0ef60ed244336ceac2eadb2877a1dc20048d", kill_on_drop: false }`
[INFO] [stderr]    Compiling aster v0.27.0
[INFO] [stderr]    Compiling serde_codegen v0.8.9
[INFO] [stderr]    Compiling quasi v0.20.1
[INFO] [stderr]    Compiling serde_codegen_internals v0.8.9
[INFO] [stderr]     Checking net2 v0.2.34
[INFO] [stderr]    Compiling async-trait v0.1.40
[INFO] [stderr]     Checking postgres-protocol v0.5.2
[INFO] [stderr]     Checking futures-util v0.3.5
[INFO] [stderr]    Compiling postgres v0.10.2
[INFO] [stderr]     Checking persistent v0.4.0
[INFO] [stdout] error[E0463]: can't find crate for `syntax`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/serde_codegen_internals-0.8.9/src/lib.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | extern crate syntax;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `serde_codegen_internals`.
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0463`.
[INFO] [stdout] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0463]: can't find crate for `syntax`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/quasi-0.20.1/src/lib.rs:23:1
[INFO] [stdout]    |
[INFO] [stdout] 23 | extern crate syntax;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0463`.
[INFO] [stdout] 
[INFO] [stdout] error[E0463]: can't find crate for `syntax`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/aster-0.27.0/src/lib.rs:10:1
[INFO] [stdout]    |
[INFO] [stdout] 10 | extern crate syntax;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0463`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "300905c1e3e84bb6175194d0f9ff0ef60ed244336ceac2eadb2877a1dc20048d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "300905c1e3e84bb6175194d0f9ff0ef60ed244336ceac2eadb2877a1dc20048d", kill_on_drop: false }`
[INFO] [stdout] 300905c1e3e84bb6175194d0f9ff0ef60ed244336ceac2eadb2877a1dc20048d