[INFO] fetching crate pair_stack 0.1.0...
[INFO] documenting pair_stack-0.1.0 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate pair_stack 0.1.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate pair_stack 0.1.0 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 crates.io crate pair_stack 0.1.0
[INFO] finished tweaking crates.io crate pair_stack 0.1.0
[INFO] tweaked toml for crates.io crate pair_stack 0.1.0 written to /workspace/builds/worker-6/source/Cargo.toml
[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] 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 r2d2_postgres v0.16.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] f90f5ffc541df63d461c31767313edc3483616b16ac59671da8354fa9780c19d
[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" "f90f5ffc541df63d461c31767313edc3483616b16ac59671da8354fa9780c19d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f90f5ffc541df63d461c31767313edc3483616b16ac59671da8354fa9780c19d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f90f5ffc541df63d461c31767313edc3483616b16ac59671da8354fa9780c19d", kill_on_drop: false }`
[INFO] [stdout] f90f5ffc541df63d461c31767313edc3483616b16ac59671da8354fa9780c19d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] 9530e78c09bf59e2f4981aac25959c6974285fcba95c0b56f14f1b8e60fcc9f0
[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" "9530e78c09bf59e2f4981aac25959c6974285fcba95c0b56f14f1b8e60fcc9f0", kill_on_drop: false }`
[INFO] [stderr]     Checking route-recognizer v0.1.13
[INFO] [stderr]     Checking tracing v0.1.19
[INFO] [stderr]     Checking scheduled-thread-pool v0.2.5
[INFO] [stderr]    Compiling async-trait v0.1.40
[INFO] [stderr]     Checking tokio v0.2.22
[INFO] [stderr]     Checking postgres-protocol v0.5.2
[INFO] [stderr]     Checking futures-util v0.3.5
[INFO] [stderr]     Checking persistent v0.4.0
[INFO] [stderr]     Checking r2d2 v0.8.9
[INFO] [stderr]     Checking router v0.6.0
[INFO] [stderr]     Checking postgres-types v0.1.2
[INFO] [stderr]     Checking tokio-util v0.3.1
[INFO] [stderr]     Checking futures-executor v0.3.5
[INFO] [stderr]     Checking h2 v0.2.6
[INFO] [stderr]     Checking futures v0.3.5
[INFO] [stderr]     Checking tokio-postgres v0.5.5
[INFO] [stderr]     Checking postgres v0.17.5
[INFO] [stderr]     Checking r2d2_postgres v0.16.0
[INFO] [stderr]     Checking hyper v0.13.7
[INFO] [stderr]  Documenting pair_stack v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved import `postgres::SslMode`
[INFO] [stdout]   --> src/lib.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | use postgres::SslMode;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^ no `SslMode` in the root
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `hyper::method`
[INFO] [stdout]   --> src/lib.rs:27:12
[INFO] [stdout]    |
[INFO] [stdout] 27 | use hyper::method::Method;
[INFO] [stdout]    |            ^^^^^^ could not find `method` in `hyper`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0603]: struct `Config` is private
[INFO] [stdout]   --> src/lib.rs:16:11
[INFO] [stdout]    |
[INFO] [stdout] 16 | use r2d2::Config;
[INFO] [stdout]    |           ^^^^^^ private struct
[INFO] [stdout]    |
[INFO] [stdout] note: the struct `Config` is defined here
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/r2d2-0.8.9/src/lib.rs:55:5
[INFO] [stdout]    |
[INFO] [stdout] 55 | use crate::config::Config;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0432, E0603.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: Could not document `pair_stack`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type lib --crate-name pair_stack src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern hyper=/opt/rustwide/target/debug/deps/libhyper-42683636752ec4ff.rmeta --extern iron=/opt/rustwide/target/debug/deps/libiron-6bdaae89ab904e56.rmeta --extern mount=/opt/rustwide/target/debug/deps/libmount-0647361f8e961a2b.rmeta --extern persistent=/opt/rustwide/target/debug/deps/libpersistent-f1b2a8d92a6f0f41.rmeta --extern postgres=/opt/rustwide/target/debug/deps/libpostgres-4dad28bea2424ce9.rmeta --extern r2d2=/opt/rustwide/target/debug/deps/libr2d2-aad74d7559bd3154.rmeta --extern r2d2_postgres=/opt/rustwide/target/debug/deps/libr2d2_postgres-ef4010d9aec50797.rmeta --extern router=/opt/rustwide/target/debug/deps/librouter-cb308d8b666e9ef5.rmeta --extern staticfile=/opt/rustwide/target/debug/deps/libstaticfile-709d0f7bb30b01d0.rmeta --cap-lints=warn --crate-version 0.1.0` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "9530e78c09bf59e2f4981aac25959c6974285fcba95c0b56f14f1b8e60fcc9f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9530e78c09bf59e2f4981aac25959c6974285fcba95c0b56f14f1b8e60fcc9f0", kill_on_drop: false }`
[INFO] [stdout] 9530e78c09bf59e2f4981aac25959c6974285fcba95c0b56f14f1b8e60fcc9f0