[INFO] cloning repository https://github.com/mrozycki/langjam0001
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mrozycki/langjam0001" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmrozycki%2Flangjam0001", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmrozycki%2Flangjam0001'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 419fbbcffac5a1a7bb3ad4ae0178bc6a99d675ae
[INFO] documenting mrozycki/langjam0001 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%2Fmrozycki%2Flangjam0001" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mrozycki/langjam0001 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] removed /workspace/builds/worker-1/source/rust-toolchain.toml
[INFO] started tweaking git repo https://github.com/mrozycki/langjam0001
[INFO] finished tweaking git repo https://github.com/mrozycki/langjam0001
[INFO] tweaked toml for git repo https://github.com/mrozycki/langjam0001 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/mrozycki/langjam0001 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-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] fe6476777b063f9c9a8db3391886e44b682e2f24ebd8f47d6829bd95241458a9
[INFO] running `Command { std: "docker" "start" "-a" "fe6476777b063f9c9a8db3391886e44b682e2f24ebd8f47d6829bd95241458a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fe6476777b063f9c9a8db3391886e44b682e2f24ebd8f47d6829bd95241458a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fe6476777b063f9c9a8db3391886e44b682e2f24ebd8f47d6829bd95241458a9", kill_on_drop: false }`
[INFO] [stdout] fe6476777b063f9c9a8db3391886e44b682e2f24ebd8f47d6829bd95241458a9
[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] 958971e0706f83c0d141e514a5ddef070a1a8e0de4b458b6326dacb34f7be020
[INFO] running `Command { std: "docker" "start" "-a" "958971e0706f83c0d141e514a5ddef070a1a8e0de4b458b6326dacb34f7be020", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
[INFO] [stderr]    Compiling libc v0.2.100
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.75
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking new_debug_unreachable v1.0.4
[INFO] [stderr]     Checking joinery v2.1.0
[INFO] [stderr]     Checking unreachable v1.0.0
[INFO] [stderr]     Checking qp-trie v0.7.7
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]    Compiling synstructure v0.12.5
[INFO] [stderr]    Compiling gc_derive v0.4.1
[INFO] [stderr]     Checking gc v0.4.1
[INFO] [stderr]  Documenting langjam v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(try_trait_v2)]
[INFO] [stdout]   |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `langjam`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name langjam 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=635adc48761fbb60 -L dependency=/opt/rustwide/target/debug/deps --extern gc=/opt/rustwide/target/debug/deps/libgc-f4475cafd7f614fe.rmeta --extern joinery=/opt/rustwide/target/debug/deps/libjoinery-95df80a9b4d38db9.rmeta --extern qp_trie=/opt/rustwide/target/debug/deps/libqp_trie-48766239d06bafdd.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-adfd11ba4bb6b230.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "958971e0706f83c0d141e514a5ddef070a1a8e0de4b458b6326dacb34f7be020", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "958971e0706f83c0d141e514a5ddef070a1a8e0de4b458b6326dacb34f7be020", kill_on_drop: false }`
[INFO] [stdout] 958971e0706f83c0d141e514a5ddef070a1a8e0de4b458b6326dacb34f7be020