[INFO] fetching crate reminisce 0.9.1...
[INFO] documenting reminisce-0.9.1 against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] extracting crate reminisce 0.9.1 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate reminisce 0.9.1 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 reminisce 0.9.1
[INFO] finished tweaking crates.io crate reminisce 0.9.1
[INFO] tweaked toml for crates.io crate reminisce 0.9.1 written to /workspace/builds/worker-1/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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: path `/workspace/builds/worker-1/source/src/reminisce.rs` was erroneously implicitly accepted for library `reminisce`,
[INFO] [stderr] please rename the file to `src/lib.rs` or set lib.path in Cargo.toml
[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-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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] 91af0c1b083e0722a17c8d03210abab21191e231b679cf5aecad4cec58a5a541
[INFO] running `Command { std: "docker" "start" "-a" "91af0c1b083e0722a17c8d03210abab21191e231b679cf5aecad4cec58a5a541", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "91af0c1b083e0722a17c8d03210abab21191e231b679cf5aecad4cec58a5a541", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "91af0c1b083e0722a17c8d03210abab21191e231b679cf5aecad4cec58a5a541", kill_on_drop: false }`
[INFO] [stdout] 91af0c1b083e0722a17c8d03210abab21191e231b679cf5aecad4cec58a5a541
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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] 138fecdce183256aa68202fd9122513ee92c8accd2a9b02ebec84bdb6423e68d
[INFO] running `Command { std: "docker" "start" "-a" "138fecdce183256aa68202fd9122513ee92c8accd2a9b02ebec84bdb6423e68d", kill_on_drop: false }`
[INFO] [stderr] warning: path `/opt/rustwide/workdir/src/reminisce.rs` was erroneously implicitly accepted for library `reminisce`,
[INFO] [stderr] please rename the file to `src/lib.rs` or set lib.path in Cargo.toml
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling reminisce v0.9.1 (/opt/rustwide/workdir)
[INFO] [stderr]  Documenting reminisce v0.9.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/reminisce.rs:4:69
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![cfg_attr(all(target_os = "linux", not(feature = "sdl")), feature(fs_walk))]
[INFO] [stdout]   |                                                                     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0635]: unknown feature `fs_walk`
[INFO] [stdout]  --> src/reminisce.rs:4:69
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![cfg_attr(all(target_os = "linux", not(feature = "sdl")), feature(fs_walk))]
[INFO] [stdout]   |                                                                     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0554, E0635.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `reminisce`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type lib --crate-name reminisce src/reminisce.rs -o /opt/rustwide/target/doc --cfg 'feature="default"' --cfg 'feature="libc"' --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=043d374784e0f02b -L dependency=/opt/rustwide/target/debug/deps --extern libc=/opt/rustwide/target/debug/deps/liblibc-4d71df194c95b93b.rmeta --cap-lints=warn --crate-version 0.9.1` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "138fecdce183256aa68202fd9122513ee92c8accd2a9b02ebec84bdb6423e68d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "138fecdce183256aa68202fd9122513ee92c8accd2a9b02ebec84bdb6423e68d", kill_on_drop: false }`
[INFO] [stdout] 138fecdce183256aa68202fd9122513ee92c8accd2a9b02ebec84bdb6423e68d