[INFO] fetching crate para 0.2.0...
[INFO] documenting para-0.2.0 against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] extracting crate para 0.2.0 into /workspace/builds/worker-36/source
[INFO] validating manifest of crates.io crate para 0.2.0 on toolchain beta-2022-05-20
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate para 0.2.0
[INFO] finished tweaking crates.io crate para 0.2.0
[INFO] tweaked toml for crates.io crate para 0.2.0 written to /workspace/builds/worker-36/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-05-20" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 68743e848538d41eab88b1b5423bcb4436cbce4ea7ea322781d21679cf256025
[INFO] running `Command { std: "docker" "start" "-a" "68743e848538d41eab88b1b5423bcb4436cbce4ea7ea322781d21679cf256025", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "68743e848538d41eab88b1b5423bcb4436cbce4ea7ea322781d21679cf256025", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "68743e848538d41eab88b1b5423bcb4436cbce4ea7ea322781d21679cf256025", kill_on_drop: false }`
[INFO] [stdout] 68743e848538d41eab88b1b5423bcb4436cbce4ea7ea322781d21679cf256025
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-05-20" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 955d3e2d4d754a6b8153aac1a73c8ee52ef1988657f6b9f1bfcb95cb0daacf5c
[INFO] running `Command { std: "docker" "start" "-a" "955d3e2d4d754a6b8153aac1a73c8ee52ef1988657f6b9f1bfcb95cb0daacf5c", kill_on_drop: false }`
[INFO] [stderr]    Compiling crossbeam-utils v0.8.8
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling crossbeam-queue v0.3.5
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]     Checking rich-phantoms v0.1.0
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.8
[INFO] [stderr]     Checking crossbeam-channel v0.5.4
[INFO] [stderr]     Checking crossbeam-deque v0.8.1
[INFO] [stderr]     Checking crossbeam v0.8.1
[INFO] [stderr]  Documenting para v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(in_band_lifetimes)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: removed due to unsolved ergonomic questions and added lifetime resolution complexity
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0261]: use of undeclared lifetime name `'a`
[INFO] [stdout]  --> src/consumer/map.rs:8:25
[INFO] [stdout]   |
[INFO] [stdout] 8 |     fn pipe<C: Consumer<'a, O>>(self, consumer: &'a C) -> Map<'a, I, O, Self, C> {
[INFO] [stdout]   |                         ^^ undeclared lifetime
[INFO] [stdout]   |
[INFO] [stdout]   = note: for more information on higher-ranked polymorphism, visit https://doc.rust-lang.org/nomicon/hrtb.html
[INFO] [stdout] help: consider making the bound lifetime-generic with a new `'a` lifetime
[INFO] [stdout]   |
[INFO] [stdout] 8 |     fn pipe<C: for<'a> Consumer<'a, O>>(self, consumer: &'a C) -> Map<'a, I, O, Self, C> {
[INFO] [stdout]   |                +++++++
[INFO] [stdout] help: consider introducing lifetime `'a` here
[INFO] [stdout]   |
[INFO] [stdout] 8 |     fn pipe<'a, C: Consumer<'a, O>>(self, consumer: &'a C) -> Map<'a, I, O, Self, C> {
[INFO] [stdout]   |             +++
[INFO] [stdout] help: consider introducing lifetime `'a` here
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub trait Mapper<'a, I, O>: Sized {
[INFO] [stdout]   |                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0261]: use of undeclared lifetime name `'a`
[INFO] [stdout]  --> src/consumer/map.rs:8:50
[INFO] [stdout]   |
[INFO] [stdout] 8 |     fn pipe<C: Consumer<'a, O>>(self, consumer: &'a C) -> Map<'a, I, O, Self, C> {
[INFO] [stdout]   |                                                  ^^ undeclared lifetime
[INFO] [stdout]   |
[INFO] [stdout] help: consider introducing lifetime `'a` here
[INFO] [stdout]   |
[INFO] [stdout] 8 |     fn pipe<'a, C: Consumer<'a, O>>(self, consumer: &'a C) -> Map<'a, I, O, Self, C> {
[INFO] [stdout]   |             +++
[INFO] [stdout] help: consider introducing lifetime `'a` here
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub trait Mapper<'a, I, O>: Sized {
[INFO] [stdout]   |                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0261]: use of undeclared lifetime name `'a`
[INFO] [stdout]  --> src/consumer/map.rs:8:63
[INFO] [stdout]   |
[INFO] [stdout] 8 |     fn pipe<C: Consumer<'a, O>>(self, consumer: &'a C) -> Map<'a, I, O, Self, C> {
[INFO] [stdout]   |                                                               ^^ undeclared lifetime
[INFO] [stdout]   |
[INFO] [stdout] help: consider introducing lifetime `'a` here
[INFO] [stdout]   |
[INFO] [stdout] 8 |     fn pipe<'a, C: Consumer<'a, O>>(self, consumer: &'a C) -> Map<'a, I, O, Self, C> {
[INFO] [stdout]   |             +++
[INFO] [stdout] help: consider introducing lifetime `'a` here
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub trait Mapper<'a, I, O>: Sized {
[INFO] [stdout]   |                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 5 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0261, E0557.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0261`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `para`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name para src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=8cea30554e114c59 -L dependency=/opt/rustwide/target/debug/deps --extern crossbeam=/opt/rustwide/target/debug/deps/libcrossbeam-e04b37bc8360b30a.rmeta --extern crossbeam_channel=/opt/rustwide/target/debug/deps/libcrossbeam_channel-8ab4c3499cd9084f.rmeta --extern rich_phantoms=/opt/rustwide/target/debug/deps/librich_phantoms-67e24a07251af433.rmeta --cap-lints=warn --crate-version 0.2.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "955d3e2d4d754a6b8153aac1a73c8ee52ef1988657f6b9f1bfcb95cb0daacf5c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "955d3e2d4d754a6b8153aac1a73c8ee52ef1988657f6b9f1bfcb95cb0daacf5c", kill_on_drop: false }`
[INFO] [stdout] 955d3e2d4d754a6b8153aac1a73c8ee52ef1988657f6b9f1bfcb95cb0daacf5c