[INFO] fetching crate i2c-multiplexer 0.1.1...
[INFO] documenting i2c-multiplexer-0.1.1 against 1.75.0 for beta-1.76-rustdoc-1
[INFO] extracting crate i2c-multiplexer 0.1.1 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate i2c-multiplexer 0.1.1 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 i2c-multiplexer 0.1.1
[INFO] finished tweaking crates.io crate i2c-multiplexer 0.1.1
[INFO] tweaked toml for crates.io crate i2c-multiplexer 0.1.1 written to /workspace/builds/worker-4-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 strum v0.23.0
[INFO] [stderr]   Downloaded shared-bus v0.2.5
[INFO] [stderr]   Downloaded embedded-hal-mock v0.9.0
[INFO] [stderr]   Downloaded rstest v0.16.0
[INFO] [stderr]   Downloaded embedded-io v0.3.1
[INFO] [stderr]   Downloaded no-std-net v0.5.0
[INFO] [stderr]   Downloaded embedded-time v0.12.1
[INFO] [stderr]   Downloaded rstest_macros v0.16.0
[INFO] [stderr]   Downloaded strum_macros v0.23.1
[INFO] [stderr]   Downloaded embedded-svc v0.22.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] eaf54406e6e96831a8b96cfdc6f652453d3be022cf4e6c1e880fc7dab6c59f56
[INFO] running `Command { std: "docker" "start" "-a" "eaf54406e6e96831a8b96cfdc6f652453d3be022cf4e6c1e880fc7dab6c59f56", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "eaf54406e6e96831a8b96cfdc6f652453d3be022cf4e6c1e880fc7dab6c59f56", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eaf54406e6e96831a8b96cfdc6f652453d3be022cf4e6c1e880fc7dab6c59f56", kill_on_drop: false }`
[INFO] [stdout] eaf54406e6e96831a8b96cfdc6f652453d3be022cf4e6c1e880fc7dab6c59f56
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 22bfa76324354a6bb33eddfac6d1e8065c6db84fa70b6bd3e2abf5e83fb2868c
[INFO] running `Command { std: "docker" "start" "-a" "22bfa76324354a6bb33eddfac6d1e8065c6db84fa70b6bd3e2abf5e83fb2868c", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.76
[INFO] [stderr]    Compiling serde v1.0.195
[INFO] [stderr]    Compiling anyhow v1.0.79
[INFO] [stderr]    Compiling serde_json v1.0.111
[INFO] [stderr]     Checking hash32 v0.2.1
[INFO] [stderr]     Checking nb v1.1.0
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling thiserror v1.0.56
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking crc-catalog v2.4.0
[INFO] [stderr]     Checking embedded-io v0.3.1
[INFO] [stderr]    Compiling heapless v0.7.17
[INFO] [stderr]     Checking spin v0.9.8
[INFO] [stderr]     Checking nb v0.1.3
[INFO] [stderr]     Checking crc v3.0.1
[INFO] [stderr]     Checking embedded-hal v0.2.7
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]    Compiling syn v2.0.48
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling strum_macros v0.23.1
[INFO] [stderr]    Compiling num_enum_derive v0.5.11
[INFO] [stderr]    Compiling darling_core v0.20.3
[INFO] [stderr]     Checking num_enum v0.5.11
[INFO] [stderr]     Checking strum v0.23.0
[INFO] [stderr]    Compiling serde_derive v1.0.195
[INFO] [stderr]    Compiling thiserror-impl v1.0.56
[INFO] [stderr]    Compiling darling_macro v0.20.3
[INFO] [stderr]    Compiling darling v0.20.3
[INFO] [stderr]    Compiling enumset_derive v0.8.1
[INFO] [stderr]     Checking no-std-net v0.5.0
[INFO] [stderr]     Checking enumset v1.1.3
[INFO] [stderr]     Checking embedded-svc v0.22.3
[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/embedded-svc-0.22.3/src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(cfg_version)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[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/embedded-svc-0.22.3/src/lib.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(cfg_target_has_atomic)] // Soon to be stabilized
[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 compile `embedded-svc` (lib) due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "22bfa76324354a6bb33eddfac6d1e8065c6db84fa70b6bd3e2abf5e83fb2868c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "22bfa76324354a6bb33eddfac6d1e8065c6db84fa70b6bd3e2abf5e83fb2868c", kill_on_drop: false }`
[INFO] [stdout] 22bfa76324354a6bb33eddfac6d1e8065c6db84fa70b6bd3e2abf5e83fb2868c
