[INFO] fetching crate mapper-impl 1.1.2...
[INFO] documenting mapper-impl-1.1.2 against 1.75.0 for beta-1.76-rustdoc-1
[INFO] extracting crate mapper-impl 1.1.2 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate mapper-impl 1.1.2 on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mapper-impl 1.1.2
[INFO] finished tweaking crates.io crate mapper-impl 1.1.2
[INFO] tweaked toml for crates.io crate mapper-impl 1.1.2 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded mapper-api v1.0.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e79fcbbe6bfb60d81591c5da03456165f4aebe462199a1c5ad2f677b35b58cd1
[INFO] running `Command { std: "docker" "start" "-a" "e79fcbbe6bfb60d81591c5da03456165f4aebe462199a1c5ad2f677b35b58cd1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e79fcbbe6bfb60d81591c5da03456165f4aebe462199a1c5ad2f677b35b58cd1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e79fcbbe6bfb60d81591c5da03456165f4aebe462199a1c5ad2f677b35b58cd1", kill_on_drop: false }`
[INFO] [stdout] e79fcbbe6bfb60d81591c5da03456165f4aebe462199a1c5ad2f677b35b58cd1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "RUSTFLAGS=--cap-lints=warn" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 99f79a449ddc09d3b302b16592095794ad6dffff94a4479e2df14965bf6a17d1
[INFO] running `Command { std: "docker" "start" "-a" "99f79a449ddc09d3b302b16592095794ad6dffff94a4479e2df14965bf6a17d1", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.76
[INFO] [stderr]     Checking unicode-ident v1.0.12
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking mapper-api v1.0.2
[INFO] [stderr]    Compiling thiserror v1.0.56
[INFO] [stderr]     Checking quote v1.0.35
[INFO] [stderr]    Compiling syn v2.0.48
[INFO] [stderr]    Compiling thiserror-impl v1.0.56
[INFO] [stderr]  Documenting mapper-impl v1.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(trait_alias)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(hash_set_entry)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[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 E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `mapper-impl`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/1.75.0-x86_64-unknown-linux-gnu/bin/rustdoc --edition=2021 --crate-type proc-macro --crate-name mapper_impl src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=310f896b5279f36e -L dependency=/opt/rustwide/target/debug/deps --extern mapper_api=/opt/rustwide/target/debug/deps/libmapper_api-fbaa2a7e0dd51a9b.rmeta --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-3889f6209a44556f.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-b5c91c32bf6deb64.rmeta --extern syn=/opt/rustwide/target/debug/deps/libsyn-f5fbacf7141ded4f.rmeta --extern thiserror=/opt/rustwide/target/debug/deps/libthiserror-4422abd86c5af033.rmeta --extern proc_macro --cap-lints=warn --crate-version 1.1.2` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "99f79a449ddc09d3b302b16592095794ad6dffff94a4479e2df14965bf6a17d1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "99f79a449ddc09d3b302b16592095794ad6dffff94a4479e2df14965bf6a17d1", kill_on_drop: false }`
[INFO] [stdout] 99f79a449ddc09d3b302b16592095794ad6dffff94a4479e2df14965bf6a17d1
[INFO] documenting mapper-impl-1.1.2 against beta-2023-12-22 for beta-1.76-rustdoc-1
[INFO] extracting crate mapper-impl 1.1.2 into /workspace/builds/worker-6-tc2/source
[INFO] validating manifest of crates.io crate mapper-impl 1.1.2 on toolchain beta-2023-12-22
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-12-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mapper-impl 1.1.2
[INFO] finished tweaking crates.io crate mapper-impl 1.1.2
[INFO] tweaked toml for crates.io crate mapper-impl 1.1.2 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-12-22" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-12-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-12-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] da1b4be184f97b8aa4d2e8a57442a235755ddf0f5cce603eb042686aa867b52b
[INFO] running `Command { std: "docker" "start" "-a" "da1b4be184f97b8aa4d2e8a57442a235755ddf0f5cce603eb042686aa867b52b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "da1b4be184f97b8aa4d2e8a57442a235755ddf0f5cce603eb042686aa867b52b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "da1b4be184f97b8aa4d2e8a57442a235755ddf0f5cce603eb042686aa867b52b", kill_on_drop: false }`
[INFO] [stdout] da1b4be184f97b8aa4d2e8a57442a235755ddf0f5cce603eb042686aa867b52b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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" "RUSTFLAGS=--cap-lints=warn" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-12-22" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9c67c5d13c717c6c8aeef7fe85359c56f09ae3fdbc43b81089a021d57f8cafb4
[INFO] running `Command { std: "docker" "start" "-a" "9c67c5d13c717c6c8aeef7fe85359c56f09ae3fdbc43b81089a021d57f8cafb4", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.76
[INFO] [stderr]     Checking unicode-ident v1.0.12
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking mapper-api v1.0.2
[INFO] [stderr]    Compiling thiserror v1.0.56
[INFO] [stderr]     Checking quote v1.0.35
[INFO] [stderr]    Compiling syn v2.0.48
[INFO] [stderr]    Compiling thiserror-impl v1.0.56
[INFO] [stderr]  Documenting mapper-impl v1.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(trait_alias)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(hash_set_entry)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[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 E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `mapper-impl`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/beta-2023-12-22-x86_64-unknown-linux-gnu/bin/rustdoc --edition=2021 --crate-type proc-macro --crate-name mapper_impl src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=6d040e8702743b39 -L dependency=/opt/rustwide/target/debug/deps --extern mapper_api=/opt/rustwide/target/debug/deps/libmapper_api-2ea398ef75d9429b.rmeta --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-d7586fc23a7202ec.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-af317973e368b4b7.rmeta --extern syn=/opt/rustwide/target/debug/deps/libsyn-3d413da4aca81b48.rmeta --extern thiserror=/opt/rustwide/target/debug/deps/libthiserror-b01d56eb468140bc.rmeta --extern proc_macro --cap-lints=warn --crate-version 1.1.2` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "9c67c5d13c717c6c8aeef7fe85359c56f09ae3fdbc43b81089a021d57f8cafb4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9c67c5d13c717c6c8aeef7fe85359c56f09ae3fdbc43b81089a021d57f8cafb4", kill_on_drop: false }`
[INFO] [stdout] 9c67c5d13c717c6c8aeef7fe85359c56f09ae3fdbc43b81089a021d57f8cafb4
