[INFO] cloning repository https://github.com/thescribe11/Rust-SST
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/thescribe11/Rust-SST" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthescribe11%2FRust-SST", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthescribe11%2FRust-SST'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 424e027278f30362e704581ae3fbf271a60f0d25
[INFO] documenting thescribe11/Rust-SST against 1.61.0 for beta-1.62-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthescribe11%2FRust-SST" "/workspace/builds/worker-27/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-27/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/thescribe11/Rust-SST on toolchain 1.61.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/thescribe11/Rust-SST
[INFO] finished tweaking git repo https://github.com/thescribe11/Rust-SST
[INFO] tweaked toml for git repo https://github.com/thescribe11/Rust-SST written to /workspace/builds/worker-27/source/Cargo.toml
[INFO] crate git repo https://github.com/thescribe11/Rust-SST already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "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-27/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/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" "+1.61.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 630d52fb4af095ef8182dd55b2a6d0299271c4f2f2cfd2c2926135aa928e3a66
[INFO] running `Command { std: "docker" "start" "-a" "630d52fb4af095ef8182dd55b2a6d0299271c4f2f2cfd2c2926135aa928e3a66", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "630d52fb4af095ef8182dd55b2a6d0299271c4f2f2cfd2c2926135aa928e3a66", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "630d52fb4af095ef8182dd55b2a6d0299271c4f2f2cfd2c2926135aa928e3a66", kill_on_drop: false }`
[INFO] [stdout] 630d52fb4af095ef8182dd55b2a6d0299271c4f2f2cfd2c2926135aa928e3a66
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/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" "+1.61.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 79c285729836f607aacd9d50c8788e521e7f2c0ea401e56714532d3b5c87b7c6
[INFO] running `Command { std: "docker" "start" "-a" "79c285729836f607aacd9d50c8788e521e7f2c0ea401e56714532d3b5c87b7c6", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.99
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]    Compiling ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling siphasher v0.3.7
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling serde_derive v1.0.127
[INFO] [stderr]    Compiling serde v1.0.127
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]    Compiling serde_json v1.0.66
[INFO] [stderr]     Checking itoa v0.4.7
[INFO] [stderr]     Checking numtoa v0.1.0
[INFO] [stderr]    Compiling memoffset v0.6.4
[INFO] [stderr]    Compiling phf_shared v0.8.0
[INFO] [stderr]     Checking phf v0.8.0
[INFO] [stderr]    Compiling nom v5.1.2
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking dirs-sys v0.3.6
[INFO] [stderr]     Checking which v4.2.2
[INFO] [stderr]     Checking nix v0.22.1
[INFO] [stderr]     Checking termion v1.5.6
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]     Checking dirs v2.0.2
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]    Compiling rand_pcg v0.2.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]    Compiling phf_generator v0.8.0
[INFO] [stderr]    Compiling phf_codegen v0.8.0
[INFO] [stderr]    Compiling terminfo v0.7.3
[INFO] [stderr]    Compiling thiserror-impl v1.0.29
[INFO] [stderr]     Checking thiserror v1.0.29
[INFO] [stderr]     Checking clearscreen v1.0.7
[INFO] [stderr]  Documenting super-star-trek v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/main.rs:21:1
[INFO] [stdout]    |
[INFO] [stdout] 21 | #![feature(allow_internal_unstable)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not document `super-star-trek`
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] Caused by:
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name super_star_trek src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=d553a031ce3721f2 -L dependency=/opt/rustwide/target/debug/deps --extern clearscreen=/opt/rustwide/target/debug/deps/libclearscreen-686f3073f57cd18a.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-77b9b46aa6d9f2c0.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-08f07eebb82f5084.rmeta --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-2a3a935d47739108.rmeta --extern termion=/opt/rustwide/target/debug/deps/libtermion-fd4c93c1871dd62d.rmeta --cap-lints=warn --crate-version 0.1.1` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "79c285729836f607aacd9d50c8788e521e7f2c0ea401e56714532d3b5c87b7c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "79c285729836f607aacd9d50c8788e521e7f2c0ea401e56714532d3b5c87b7c6", kill_on_drop: false }`
[INFO] [stdout] 79c285729836f607aacd9d50c8788e521e7f2c0ea401e56714532d3b5c87b7c6