[INFO] cloning repository https://github.com/pymongo/rust_first
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/pymongo/rust_first" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpymongo%2Frust_first", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpymongo%2Frust_first'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c8b341bc1f139abfb719ef2eab8d5f89011cb3cd
[INFO] documenting pymongo/rust_first against beta-2023-07-23 for beta-1.72-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpymongo%2Frust_first" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/pymongo/rust_first on toolchain beta-2023-07-23
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-07-23" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/pymongo/rust_first
[INFO] finished tweaking git repo https://github.com/pymongo/rust_first
[INFO] tweaked toml for git repo https://github.com/pymongo/rust_first written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-07-23" "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-2023-07-23" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:5c16f4e6c37141f9fef0bc86f7a492d732943053e42aab8461035881e3f53823" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-07-23" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 46e26e00930082c6b2f0dda32888c56fb75604b6d24a701e495b77ede3538ed0
[INFO] running `Command { std: "docker" "start" "-a" "46e26e00930082c6b2f0dda32888c56fb75604b6d24a701e495b77ede3538ed0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "46e26e00930082c6b2f0dda32888c56fb75604b6d24a701e495b77ede3538ed0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "46e26e00930082c6b2f0dda32888c56fb75604b6d24a701e495b77ede3538ed0", kill_on_drop: false }`
[INFO] [stdout] 46e26e00930082c6b2f0dda32888c56fb75604b6d24a701e495b77ede3538ed0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:5c16f4e6c37141f9fef0bc86f7a492d732943053e42aab8461035881e3f53823" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-07-23" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a30bca35e1601cd03384fcdd06c6a31011ea3c60df9ff6683e6317f1532d978f
[INFO] running `Command { std: "docker" "start" "-a" "a30bca35e1601cd03384fcdd06c6a31011ea3c60df9ff6683e6317f1532d978f", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.66
[INFO] [stderr]    Compiling unicode-ident v1.0.11
[INFO] [stderr]    Compiling libc v0.2.147
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]     Checking once_cell v1.18.0
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking pin-project-lite v0.2.10
[INFO] [stderr]    Compiling cc v1.0.79
[INFO] [stderr]    Compiling pkg-config v0.3.27
[INFO] [stderr]     Checking bytes v1.4.0
[INFO] [stderr]    Compiling futures-core v0.3.28
[INFO] [stderr]    Compiling futures-task v0.3.28
[INFO] [stderr]     Checking itoa v1.0.9
[INFO] [stderr]     Checking log v0.4.19
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]    Compiling futures-util v0.3.28
[INFO] [stderr]    Compiling openssl v0.10.55
[INFO] [stderr]     Checking foreign-types-shared v0.1.1
[INFO] [stderr]     Checking futures-sink v0.3.28
[INFO] [stderr]     Checking tinyvec_macros v0.1.1
[INFO] [stderr]     Checking foreign-types v0.3.2
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]     Checking tracing-core v0.1.31
[INFO] [stderr]    Compiling futures-channel v0.3.28
[INFO] [stderr]    Compiling httparse v1.8.0
[INFO] [stderr]    Compiling native-tls v0.2.11
[INFO] [stderr]     Checking hashbrown v0.12.3
[INFO] [stderr]     Checking tinyvec v1.6.0
[INFO] [stderr]     Checking try-lock v0.2.4
[INFO] [stderr]     Checking http v0.2.9
[INFO] [stderr]     Checking percent-encoding v2.3.0
[INFO] [stderr]    Compiling tokio v1.29.1
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]    Compiling slab v0.4.8
[INFO] [stderr]     Checking openssl-probe v0.1.5
[INFO] [stderr]    Compiling serde v1.0.177
[INFO] [stderr]     Checking form_urlencoded v1.2.0
[INFO] [stderr]     Checking want v0.3.1
[INFO] [stderr]    Compiling serde_derive v1.0.177
[INFO] [stderr]     Checking httpdate v1.0.2
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking unicode-bidi v0.3.13
[INFO] [stderr]     Checking regex-syntax v0.6.29
[INFO] [stderr]     Checking tower-service v0.3.2
[INFO] [stderr]     Checking regex-syntax v0.7.4
[INFO] [stderr]     Checking overload v0.1.1
[INFO] [stderr]     Checking ryu v1.0.15
[INFO] [stderr]     Checking tracing-log v0.1.3
[INFO] [stderr]     Checking sharded-slab v0.1.4
[INFO] [stderr]     Checking nu-ansi-term v0.46.0
[INFO] [stderr]     Checking thread_local v1.1.7
[INFO] [stderr]     Checking encoding_rs v0.8.32
[INFO] [stderr]    Compiling quote v1.0.32
[INFO] [stderr]     Checking unicode-normalization v0.1.22
[INFO] [stderr]     Checking mime v0.3.17
[INFO] [stderr]     Checking ipnet v2.8.0
[INFO] [stderr]     Checking base64 v0.21.2
[INFO] [stderr]     Checking mio v0.8.8
[INFO] [stderr]     Checking socket2 v0.4.9
[INFO] [stderr]    Compiling syn v2.0.27
[INFO] [stderr]     Checking num_cpus v1.16.0
[INFO] [stderr]     Checking http-body v0.4.5
[INFO] [stderr]     Checking smallvec v1.11.0
[INFO] [stderr]    Compiling openssl-sys v0.9.90
[INFO] [stderr]     Checking idna v0.4.0
[INFO] [stderr]     Checking url v2.4.0
[INFO] [stderr]     Checking regex-automata v0.3.3
[INFO] [stderr]     Checking regex-automata v0.1.10
[INFO] [stderr]     Checking matchers v0.1.0
[INFO] [stderr]     Checking regex v1.9.1
[INFO] [stderr]     Checking serde_urlencoded v0.7.1
[INFO] [stderr]    Compiling tracing-attributes v0.1.26
[INFO] [stderr]    Compiling tokio-macros v2.1.0
[INFO] [stderr]    Compiling openssl-macros v0.1.1
[INFO] [stderr]     Checking tracing v0.1.37
[INFO] [stderr]     Checking tracing-subscriber v0.3.17
[INFO] [stderr]     Checking tokio-util v0.7.8
[INFO] [stderr]     Checking tokio-native-tls v0.3.1
[INFO] [stderr]     Checking h2 v0.3.20
[INFO] [stderr]     Checking hyper v0.14.27
[INFO] [stderr]     Checking hyper-tls v0.5.0
[INFO] [stderr]     Checking reqwest v0.11.18
[INFO] [stderr]  Documenting learn_rust v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking learn_rust v0.1.1 (/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(portable_simd)]
[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:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(portable_simd)]
[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(test)]
[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:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(generators, generator_trait)]
[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(test)]
[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:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(generators, generator_trait)]
[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:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(unboxed_closures, fn_traits)]
[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:5:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![feature(type_name_of_val)]
[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:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(unboxed_closures, fn_traits)]
[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:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(portable_simd)]
[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:5:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![feature(type_name_of_val)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not document `learn_rust`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stdout] error: aborting due to 5 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(test)]
[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:3:24
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(generators, generator_trait)]
[INFO] [stdout]   |                        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/beta-2023-07-23-x86_64-unknown-linux-gnu/bin/rustdoc --edition=2021 --crate-type lib --crate-name learn_rust src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=c829f6b026d9846d -L dependency=/opt/rustwide/target/debug/deps --extern reqwest=/opt/rustwide/target/debug/deps/libreqwest-a8fff8a8097cb217.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-fab777297c728f82.rmeta --extern tokio=/opt/rustwide/target/debug/deps/libtokio-0467d0d92ebdc357.rmeta --extern tracing=/opt/rustwide/target/debug/deps/libtracing-36401586dee61772.rmeta --extern tracing_subscriber=/opt/rustwide/target/debug/deps/libtracing_subscriber-c98fffb3c04f928c.rmeta --cap-lints=warn --crate-version 0.1.1` (exit status: 1)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:4:30
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(unboxed_closures, fn_traits)]
[INFO] [stdout]   |                              ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![feature(type_name_of_val)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `learn_rust` (lib) due to 11 previous errors
[INFO] [stdout] error: aborting due to 10 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "a30bca35e1601cd03384fcdd06c6a31011ea3c60df9ff6683e6317f1532d978f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a30bca35e1601cd03384fcdd06c6a31011ea3c60df9ff6683e6317f1532d978f", kill_on_drop: false }`
[INFO] [stdout] a30bca35e1601cd03384fcdd06c6a31011ea3c60df9ff6683e6317f1532d978f