[INFO] cloning repository https://github.com/nethad/pingduck
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/nethad/pingduck" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnethad%2Fpingduck", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnethad%2Fpingduck'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 26774047dc3196921e37e41f08b7a7a91101cbe9
[INFO] documenting nethad/pingduck 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%2Fnethad%2Fpingduck" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/nethad/pingduck 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/nethad/pingduck
[INFO] finished tweaking git repo https://github.com/nethad/pingduck
[INFO] tweaked toml for git repo https://github.com/nethad/pingduck written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/nethad/pingduck 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]     Updating git repository `https://github.com/iron/body-parser.git`
[INFO] [stderr] error: the lock file /workspace/builds/worker-0/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[INFO] the lockfile is outdated, regenerating it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]     Updating git repository `https://github.com/iron/body-parser.git`
[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]  Downloading crates ...
[INFO] [stderr]   Downloaded serde_codegen v0.7.15
[INFO] [stderr]   Downloaded serde_json v0.7.4
[INFO] [stderr]   Downloaded quasi v0.16.0
[INFO] [stderr]   Downloaded hyper v0.7.2
[INFO] [stderr]   Downloaded router v0.1.1
[INFO] [stderr]   Downloaded iron v0.3.1
[INFO] [stderr]   Downloaded quasi_codegen v0.16.0
[INFO] [stderr]   Downloaded mime v0.1.3
[INFO] [stderr]   Downloaded serde_codegen_internals v0.4.0
[INFO] [stderr]   Downloaded quasi_macros v0.16.0
[INFO] [stderr]   Downloaded serde_macros v0.7.15
[INFO] [stderr]   Downloaded aster v0.22.1
[INFO] [stderr]   Downloaded iron v0.2.6
[INFO] [stderr] warning: parsed version requirement `0.2*` is no longer valid
[INFO] [stderr] 
[INFO] [stderr] Previous versions of Cargo accepted this malformed requirement,
[INFO] [stderr] but it is being deprecated. This was found when parsing the manifest
[INFO] [stderr] of iron 0.2.6, and the correct version requirement is `0.2.*`.
[INFO] [stderr] 
[INFO] [stderr] This will soon become a hard error, so it's either recommended to
[INFO] [stderr] update to a fixed version or contact the upstream maintainer about
[INFO] [stderr] this warning.
[INFO] [stderr] 
[INFO] [stderr]   Downloaded serde v0.6.15
[INFO] [stderr]   Downloaded persistent v0.4.0
[INFO] [stderr]   Downloaded persistent v0.0.9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] 0017de57425485740a89a167ab6c681642773d3fe21aaa874b6350cd9473c7f7
[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" "0017de57425485740a89a167ab6c681642773d3fe21aaa874b6350cd9473c7f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0017de57425485740a89a167ab6c681642773d3fe21aaa874b6350cd9473c7f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0017de57425485740a89a167ab6c681642773d3fe21aaa874b6350cd9473c7f7", kill_on_drop: false }`
[INFO] [stdout] 0017de57425485740a89a167ab6c681642773d3fe21aaa874b6350cd9473c7f7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] f9c7072647af58783acaf91ec27eec73d4da78ef8bd29979b36687cd6edb6c7c
[INFO] running `Command { std: "docker" "start" "-a" "f9c7072647af58783acaf91ec27eec73d4da78ef8bd29979b36687cd6edb6c7c", kill_on_drop: false }`
[INFO] [stderr] warning: parsed version requirement `0.2*` is no longer valid
[INFO] [stderr] 
[INFO] [stderr] Previous versions of Cargo accepted this malformed requirement,
[INFO] [stderr] but it is being deprecated. This was found when parsing the manifest
[INFO] [stderr] of iron 0.2.6, and the correct version requirement is `0.2.*`.
[INFO] [stderr] 
[INFO] [stderr] This will soon become a hard error, so it's either recommended to
[INFO] [stderr] update to a fixed version or contact the upstream maintainer about
[INFO] [stderr] this warning.
[INFO] [stderr] 
[INFO] [stderr] warning: parsed version requirement `0.2*` is no longer valid
[INFO] [stderr] 
[INFO] [stderr] Previous versions of Cargo accepted this malformed requirement,
[INFO] [stderr] but it is being deprecated. This was found when parsing the manifest
[INFO] [stderr] of iron 0.2.6, and the correct version requirement is `0.2.*`.
[INFO] [stderr] 
[INFO] [stderr] This will soon become a hard error, so it's either recommended to
[INFO] [stderr] update to a fixed version or contact the upstream maintainer about
[INFO] [stderr] this warning.
[INFO] [stderr] 
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling rand_core v0.4.2
[INFO] [stderr]     Checking tinyvec v0.3.4
[INFO] [stderr]    Compiling pkg-config v0.3.18
[INFO] [stderr]    Compiling gcc v0.3.55
[INFO] [stderr]     Checking rustc-serialize v0.3.24
[INFO] [stderr]     Checking bitflags v0.7.0
[INFO] [stderr]     Checking modifier v0.1.0
[INFO] [stderr]     Checking traitobject v0.0.1
[INFO] [stderr]     Checking safemem v0.3.3
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling serde v1.0.115
[INFO] [stderr]    Compiling aster v0.22.1
[INFO] [stderr]     Checking lazy_static v0.1.16
[INFO] [stderr]    Compiling serde_codegen v0.7.15
[INFO] [stderr]    Compiling serde_json v1.0.57
[INFO] [stderr]     Checking itoa v0.4.6
[INFO] [stderr]    Compiling serde_codegen_internals 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-0.4.0/src/lib.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | extern crate syntax;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0463]: can't find crate for `syntax`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/aster-0.22.1/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] [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: could not compile `serde_codegen_internals`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "f9c7072647af58783acaf91ec27eec73d4da78ef8bd29979b36687cd6edb6c7c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f9c7072647af58783acaf91ec27eec73d4da78ef8bd29979b36687cd6edb6c7c", kill_on_drop: false }`
[INFO] [stdout] f9c7072647af58783acaf91ec27eec73d4da78ef8bd29979b36687cd6edb6c7c