[INFO] cloning repository https://github.com/Niedzwiedzw/learning-audio-programming
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Niedzwiedzw/learning-audio-programming" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNiedzwiedzw%2Flearning-audio-programming", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNiedzwiedzw%2Flearning-audio-programming'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ac3fb55d7c0c12a9dcecaa8bece165e6397f23c6
[INFO] documenting Niedzwiedzw/learning-audio-programming against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNiedzwiedzw%2Flearning-audio-programming" "/workspace/builds/worker-39/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-39/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Niedzwiedzw/learning-audio-programming 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 git repo https://github.com/Niedzwiedzw/learning-audio-programming
[INFO] finished tweaking git repo https://github.com/Niedzwiedzw/learning-audio-programming
[INFO] tweaked toml for git repo https://github.com/Niedzwiedzw/learning-audio-programming written to /workspace/builds/worker-39/source/Cargo.toml
[INFO] crate git repo https://github.com/Niedzwiedzw/learning-audio-programming already has a lockfile, it will not be regenerated
[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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-39/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-39/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] 2035326b33189140a32452faec8e8db494a096804d597c040fa66c1d31e9e944
[INFO] running `Command { std: "docker" "start" "-a" "2035326b33189140a32452faec8e8db494a096804d597c040fa66c1d31e9e944", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2035326b33189140a32452faec8e8db494a096804d597c040fa66c1d31e9e944", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2035326b33189140a32452faec8e8db494a096804d597c040fa66c1d31e9e944", kill_on_drop: false }`
[INFO] [stdout] 2035326b33189140a32452faec8e8db494a096804d597c040fa66c1d31e9e944
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-39/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-39/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] e64ae66641d9af9d8ef4c2453d7023e594fd54c294c09982573b3642bb62273e
[INFO] running `Command { std: "docker" "start" "-a" "e64ae66641d9af9d8ef4c2453d7023e594fd54c294c09982573b3642bb62273e", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.95
[INFO] [stderr]    Compiling libm v0.2.1
[INFO] [stderr]    Compiling cc v1.0.68
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]    Compiling ucd-trie v0.1.3
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]    Compiling crc32fast v1.2.1
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.5
[INFO] [stderr]    Compiling rayon-core v1.9.1
[INFO] [stderr]     Checking same-file v1.0.6
[INFO] [stderr]     Checking weezl v0.1.5
[INFO] [stderr]     Checking plotters-backend v0.3.0
[INFO] [stderr]     Checking bytemuck v1.5.1
[INFO] [stderr]     Checking jpeg-decoder v0.1.22
[INFO] [stderr]     Checking float-ord v0.2.0
[INFO] [stderr]     Checking strength_reduce v0.2.3
[INFO] [stderr]     Checking cache-padded v1.1.1
[INFO] [stderr]     Checking ttf-parser v0.12.1
[INFO] [stderr]     Checking hound v3.4.0
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling memoffset v0.6.4
[INFO] [stderr]    Compiling num-rational v0.3.2
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]     Checking deflate v0.8.6
[INFO] [stderr]     Checking itertools v0.10.0
[INFO] [stderr]     Checking plotters-svg v0.3.0
[INFO] [stderr]     Checking walkdir v2.3.2
[INFO] [stderr]     Checking ringbuf v0.2.5
[INFO] [stderr]    Compiling pest v2.1.3
[INFO] [stderr]    Compiling cmake v0.1.45
[INFO] [stderr]     Checking gif v0.11.2
[INFO] [stderr]    Compiling servo-fontconfig-sys v5.1.0
[INFO] [stderr]     Checking png v0.16.8
[INFO] [stderr]     Checking crossbeam-channel v0.5.1
[INFO] [stderr]    Compiling semver-parser v0.10.2
[INFO] [stderr]    Compiling freetype-sys v0.13.1
[INFO] [stderr]    Compiling expat-sys v2.1.6
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking dirs-sys v0.3.6
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]    Compiling semver v0.11.0
[INFO] [stderr]     Checking dirs v2.0.2
[INFO] [stderr]     Checking crossbeam-deque v0.8.0
[INFO] [stderr]     Checking rand_core v0.6.2
[INFO] [stderr]     Checking uuid v0.8.2
[INFO] [stderr]     Checking num-complex v0.4.0
[INFO] [stderr]     Checking transpose v0.2.1
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking primal-check v0.3.1
[INFO] [stderr]    Compiling rustc_version v0.3.3
[INFO] [stderr]     Checking freetype v0.7.0
[INFO] [stderr]     Checking rand_chacha v0.3.0
[INFO] [stderr]     Checking rand_xorshift v0.3.0
[INFO] [stderr]     Checking rustfft v6.0.1
[INFO] [stderr]     Checking image v0.23.14
[INFO] [stderr]     Checking servo-fontconfig v0.5.1
[INFO] [stderr]     Checking rand v0.8.3
[INFO] [stderr]    Compiling pathfinder_simd v0.5.1
[INFO] [stderr]     Checking rand_distr v0.4.0
[INFO] [stderr]     Checking plotters-bitmap v0.3.1
[INFO] [stderr]     Checking pathfinder_geometry v0.5.1
[INFO] [stderr]     Checking font-kit v0.10.0
[INFO] [stderr]     Checking plotters v0.3.1
[INFO] [stderr]  Documenting learning-audio-programming v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(min_type_alias_impl_trait)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: removed in favor of full type_alias_impl_trait
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0557`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `learning-audio-programming`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name learning_audio_programming src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items '-Arustdoc::private-intra-doc-links' -C metadata=cc19421f30145653 -L dependency=/opt/rustwide/target/debug/deps --extern hound=/opt/rustwide/target/debug/deps/libhound-6c2e2660be63a425.rmeta --extern itertools=/opt/rustwide/target/debug/deps/libitertools-66d91c8db82d9763.rmeta --extern plotters=/opt/rustwide/target/debug/deps/libplotters-a968b3cc9402f8ed.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-a6effacb7a7efcfc.rmeta --extern rand_distr=/opt/rustwide/target/debug/deps/librand_distr-d4acecb809bdc6a3.rmeta --extern rand_xorshift=/opt/rustwide/target/debug/deps/librand_xorshift-e417a9eaf29f236d.rmeta --extern rayon=/opt/rustwide/target/debug/deps/librayon-4df2ca9a940bc830.rmeta --extern ringbuf=/opt/rustwide/target/debug/deps/libringbuf-edd2420033e6d478.rmeta --extern rustfft=/opt/rustwide/target/debug/deps/librustfft-3b13013514d676a3.rmeta --extern uuid=/opt/rustwide/target/debug/deps/libuuid-101ca4cbc1423dca.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "e64ae66641d9af9d8ef4c2453d7023e594fd54c294c09982573b3642bb62273e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e64ae66641d9af9d8ef4c2453d7023e594fd54c294c09982573b3642bb62273e", kill_on_drop: false }`
[INFO] [stdout] e64ae66641d9af9d8ef4c2453d7023e594fd54c294c09982573b3642bb62273e