[INFO] fetching crate smtp-client 0.1.0...
[INFO] documenting smtp-client-0.1.0 against 1.75.0 for beta-1.76-rustdoc-1
[INFO] extracting crate smtp-client 0.1.0 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate smtp-client 0.1.0 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 smtp-client 0.1.0
[INFO] finished tweaking crates.io crate smtp-client 0.1.0
[INFO] tweaked toml for crates.io crate smtp-client 0.1.0 written to /workspace/builds/worker-7-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 auto_enums_derive v0.7.12
[INFO] [stderr]   Downloaded auto_enums_core v0.7.12
[INFO] [stderr]   Downloaded duplexify v1.2.2
[INFO] [stderr]   Downloaded auto_enums v0.7.12
[INFO] [stderr]   Downloaded smtp-message v0.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 9d3d71435223596eb00fc55376ee34c10aa769ad5fefd95b2616adf91f1ef32b
[INFO] running `Command { std: "docker" "start" "-a" "9d3d71435223596eb00fc55376ee34c10aa769ad5fefd95b2616adf91f1ef32b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9d3d71435223596eb00fc55376ee34c10aa769ad5fefd95b2616adf91f1ef32b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9d3d71435223596eb00fc55376ee34c10aa769ad5fefd95b2616adf91f1ef32b", kill_on_drop: false }`
[INFO] [stdout] 9d3d71435223596eb00fc55376ee34c10aa769ad5fefd95b2616adf91f1ef32b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 0b41dadcd91085e80291079198d2feba8d0dbbc324ae44da4f32413b1b9dae9b
[INFO] running `Command { std: "docker" "start" "-a" "0b41dadcd91085e80291079198d2feba8d0dbbc324ae44da4f32413b1b9dae9b", kill_on_drop: false }`
[INFO] [stderr]    Compiling rustix v0.38.28
[INFO] [stderr]    Compiling proc-macro2 v1.0.76
[INFO] [stderr]    Compiling auto_enums_derive v0.7.12
[INFO] [stderr]    Compiling async-fs v1.6.0
[INFO] [stderr]     Checking idna v0.3.0
[INFO] [stderr]     Checking chrono v0.4.31
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]    Compiling syn v2.0.48
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling derive_utils v0.11.2
[INFO] [stderr]    Compiling auto_enums_core v0.7.12
[INFO] [stderr]    Compiling enum-as-inner v0.4.0
[INFO] [stderr]     Checking auto_enums v0.7.12
[INFO] [stderr]    Compiling tracing-attributes v0.1.27
[INFO] [stderr]    Compiling futures-macro v0.3.30
[INFO] [stderr]    Compiling thiserror-impl v1.0.56
[INFO] [stderr]    Compiling pin-project-internal v1.1.3
[INFO] [stderr]    Compiling async-trait v0.1.77
[INFO] [stderr]     Checking futures-util v0.3.30
[INFO] [stderr]     Checking thiserror v1.0.56
[INFO] [stderr]     Checking pin-project v1.1.3
[INFO] [stderr]     Checking tracing v0.1.40
[INFO] [stderr]     Checking polling v3.3.1
[INFO] [stderr]     Checking blocking v1.5.1
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/futures-util-0.3.30/src/lib.rs:4:53
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![cfg_attr(feature = "write-all-vectored", feature(io_slice_advance))]
[INFO] [stdout]   |                                                     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking async-io v2.2.2
[INFO] [stderr]     Checking async-net v1.8.0
[INFO] [stderr]     Checking async-global-executor v2.4.1
[INFO] [stderr]     Checking async-signal v0.2.5
[INFO] [stderr]     Checking async-process v1.8.1
[INFO] [stderr]     Checking async-std v1.12.0
[INFO] [stderr]     Checking smol v1.3.0
[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 compile `futures-util` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "0b41dadcd91085e80291079198d2feba8d0dbbc324ae44da4f32413b1b9dae9b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0b41dadcd91085e80291079198d2feba8d0dbbc324ae44da4f32413b1b9dae9b", kill_on_drop: false }`
[INFO] [stdout] 0b41dadcd91085e80291079198d2feba8d0dbbc324ae44da4f32413b1b9dae9b
[INFO] documenting smtp-client-0.1.0 against beta-2023-12-22 for beta-1.76-rustdoc-1
[INFO] extracting crate smtp-client 0.1.0 into /workspace/builds/worker-7-tc2/source
[INFO] validating manifest of crates.io crate smtp-client 0.1.0 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 smtp-client 0.1.0
[INFO] finished tweaking crates.io crate smtp-client 0.1.0
[INFO] tweaked toml for crates.io crate smtp-client 0.1.0 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-2023-12-22" "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-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-12-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 22df18c7fd365dfe1de2946e0b14d3e5186769069714be56108995f334fe9fec
[INFO] running `Command { std: "docker" "start" "-a" "22df18c7fd365dfe1de2946e0b14d3e5186769069714be56108995f334fe9fec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "22df18c7fd365dfe1de2946e0b14d3e5186769069714be56108995f334fe9fec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "22df18c7fd365dfe1de2946e0b14d3e5186769069714be56108995f334fe9fec", kill_on_drop: false }`
[INFO] [stdout] 22df18c7fd365dfe1de2946e0b14d3e5186769069714be56108995f334fe9fec
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/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] 9158a0f9d0e800dbe1e5af2d5e6e39615461270a9d9215f896f8b4486249b6a7
[INFO] running `Command { std: "docker" "start" "-a" "9158a0f9d0e800dbe1e5af2d5e6e39615461270a9d9215f896f8b4486249b6a7", kill_on_drop: false }`
[INFO] [stderr]    Compiling rustix v0.38.28
[INFO] [stderr]    Compiling proc-macro2 v1.0.76
[INFO] [stderr]    Compiling auto_enums_derive v0.7.12
[INFO] [stderr]    Compiling async-fs v1.6.0
[INFO] [stderr]     Checking idna v0.3.0
[INFO] [stderr]     Checking chrono v0.4.31
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]    Compiling syn v2.0.48
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling derive_utils v0.11.2
[INFO] [stderr]    Compiling auto_enums_core v0.7.12
[INFO] [stderr]    Compiling enum-as-inner v0.4.0
[INFO] [stderr]    Compiling tracing-attributes v0.1.27
[INFO] [stderr]    Compiling futures-macro v0.3.30
[INFO] [stderr]    Compiling thiserror-impl v1.0.56
[INFO] [stderr]    Compiling async-trait v0.1.77
[INFO] [stderr]    Compiling pin-project-internal v1.1.3
[INFO] [stderr]     Checking auto_enums v0.7.12
[INFO] [stderr]     Checking pin-project v1.1.3
[INFO] [stderr]     Checking thiserror v1.0.56
[INFO] [stderr]     Checking futures-util v0.3.30
[INFO] [stderr]     Checking tracing v0.1.40
[INFO] [stderr]     Checking polling v3.3.1
[INFO] [stderr]     Checking blocking v1.5.1
[INFO] [stderr]     Checking async-io v2.2.2
[INFO] [stderr]     Checking async-net v1.8.0
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/futures-util-0.3.30/src/lib.rs:4:53
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![cfg_attr(feature = "write-all-vectored", feature(io_slice_advance))]
[INFO] [stdout]   |                                                     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking async-global-executor v2.4.1
[INFO] [stderr]     Checking async-signal v0.2.5
[INFO] [stderr]     Checking async-std v1.12.0
[INFO] [stderr]     Checking async-process v1.8.1
[INFO] [stderr]     Checking smol v1.3.0
[INFO] [stdout] error: aborting due to 1 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 compile `futures-util` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "9158a0f9d0e800dbe1e5af2d5e6e39615461270a9d9215f896f8b4486249b6a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9158a0f9d0e800dbe1e5af2d5e6e39615461270a9d9215f896f8b4486249b6a7", kill_on_drop: false }`
[INFO] [stdout] 9158a0f9d0e800dbe1e5af2d5e6e39615461270a9d9215f896f8b4486249b6a7
