[INFO] fetching crate pair_stack 0.1.0...
[INFO] documenting pair_stack-0.1.0 against 1.54.0 for beta-1.55-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 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 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" "+1.54.0" "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" "+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] 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" "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] [stdout] 6729969e92a5d2928fe8473c55d3e545414624fec5aa4be6fec09fd34704effc
[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" "6729969e92a5d2928fe8473c55d3e545414624fec5aa4be6fec09fd34704effc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6729969e92a5d2928fe8473c55d3e545414624fec5aa4be6fec09fd34704effc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6729969e92a5d2928fe8473c55d3e545414624fec5aa4be6fec09fd34704effc", kill_on_drop: false }`
[INFO] [stdout] 6729969e92a5d2928fe8473c55d3e545414624fec5aa4be6fec09fd34704effc
[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" "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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 986062b85df65bd7fb247312ff2dec33af544afa3a1e61d5ccdb986f2d70db91
[INFO] running `Command { std: "docker" "start" "-a" "986062b85df65bd7fb247312ff2dec33af544afa3a1e61d5ccdb986f2d70db91", kill_on_drop: false }`
[INFO] [stderr]     Checking modifier v0.1.0
[INFO] [stderr]     Checking fallible-iterator v0.2.0
[INFO] [stderr]     Checking sequence_trie v0.3.6
[INFO] [stderr]     Checking route-recognizer v0.1.13
[INFO] [stderr]    Compiling tokio v1.9.0
[INFO] [stderr]     Checking unsafe-any v0.4.2
[INFO] [stderr]     Checking phf v0.8.0
[INFO] [stderr]     Checking stringprep v0.1.2
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking futures-util v0.3.16
[INFO] [stderr]     Checking md-5 v0.9.1
[INFO] [stderr]     Checking hmac v0.10.1
[INFO] [stderr]     Checking hyper v0.10.16
[INFO] [stderr]     Checking r2d2 v0.8.9
[INFO] [stderr]     Checking typemap v0.3.3
[INFO] [stderr]     Checking postgres-protocol v0.6.1
[INFO] [stderr]     Checking plugin v0.2.6
[INFO] [stderr]     Checking postgres-types v0.2.1
[INFO] [stderr]    Compiling phf_generator v0.7.24
[INFO] [stderr]    Compiling phf_codegen v0.7.24
[INFO] [stderr]    Compiling mime_guess v1.8.8
[INFO] [stderr]     Checking futures-executor v0.3.16
[INFO] [stderr]     Checking iron v0.6.1
[INFO] [stderr]     Checking futures v0.3.16
[INFO] [stderr]     Checking mount v0.4.0
[INFO] [stderr]     Checking router v0.6.0
[INFO] [stderr]     Checking persistent v0.4.0
[INFO] [stderr]     Checking tokio-util v0.6.7
[INFO] [stderr]     Checking hyper v0.14.11
[INFO] [stderr]     Checking staticfile v0.5.0
[INFO] [stderr]     Checking tokio-postgres v0.7.2
[INFO] [stderr]     Checking postgres v0.19.1
[INFO] [stderr]     Checking r2d2_postgres v0.18.0
[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-3b0dfc4b63edc0ce.rmeta --extern iron=/opt/rustwide/target/debug/deps/libiron-03509f108b8e9c08.rmeta --extern mount=/opt/rustwide/target/debug/deps/libmount-76e5328438e26f76.rmeta --extern persistent=/opt/rustwide/target/debug/deps/libpersistent-4616762e19c6f3b4.rmeta --extern postgres=/opt/rustwide/target/debug/deps/libpostgres-8f7b0ac863216500.rmeta --extern r2d2=/opt/rustwide/target/debug/deps/libr2d2-c419e6e91dee912b.rmeta --extern r2d2_postgres=/opt/rustwide/target/debug/deps/libr2d2_postgres-e235c38d901d3c2e.rmeta --extern router=/opt/rustwide/target/debug/deps/librouter-cac4a6d044eba12a.rmeta --extern staticfile=/opt/rustwide/target/debug/deps/libstaticfile-2e45b3456d56f279.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "986062b85df65bd7fb247312ff2dec33af544afa3a1e61d5ccdb986f2d70db91", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "986062b85df65bd7fb247312ff2dec33af544afa3a1e61d5ccdb986f2d70db91", kill_on_drop: false }`
[INFO] [stdout] 986062b85df65bd7fb247312ff2dec33af544afa3a1e61d5ccdb986f2d70db91
