[INFO] fetching crate diny 0.2.4...
[INFO] documenting diny-0.2.4 against 1.75.0 for beta-1.76-rustdoc-1
[INFO] extracting crate diny 0.2.4 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate diny 0.2.4 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 diny 0.2.4
[INFO] finished tweaking crates.io crate diny 0.2.4
[INFO] tweaked toml for crates.io crate diny 0.2.4 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate crates.io crate diny 0.2.4 already has a lockfile, it will not be regenerated
[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]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded mio v0.7.14
[INFO] [stderr]   Downloaded async-compat v0.2.1
[INFO] [stderr]   Downloaded tokio-macros v1.5.1
[INFO] [stderr]   Downloaded diny_test v0.2.4
[INFO] [stderr]   Downloaded diny_derive v0.2.1
[INFO] [stderr]   Downloaded diny_core v0.2.4
[INFO] [stderr]   Downloaded serde_json v1.0.69
[INFO] [stderr]   Downloaded tokio v1.13.0
[INFO] [stderr]   Downloaded libc v0.2.107
[INFO] [stderr]   Downloaded syn v1.0.81
[INFO] [stderr]   Downloaded itertools v0.10.1
[INFO] [stderr]   Downloaded bumpalo v3.8.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 5bdb05e6d359517090154c2316ddcd32c9ac3296579a49482197b1b0e088b140
[INFO] running `Command { std: "docker" "start" "-a" "5bdb05e6d359517090154c2316ddcd32c9ac3296579a49482197b1b0e088b140", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5bdb05e6d359517090154c2316ddcd32c9ac3296579a49482197b1b0e088b140", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5bdb05e6d359517090154c2316ddcd32c9ac3296579a49482197b1b0e088b140", kill_on_drop: false }`
[INFO] [stdout] 5bdb05e6d359517090154c2316ddcd32c9ac3296579a49482197b1b0e088b140
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 3f0a6f95cb924ecb8dd3a0e7b2e225777daa0a2598278d1ae00c2cfc99d86058
[INFO] running `Command { std: "docker" "start" "-a" "3f0a6f95cb924ecb8dd3a0e7b2e225777daa0a2598278d1ae00c2cfc99d86058", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.32
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling futures-core v0.3.17
[INFO] [stderr]    Compiling syn v1.0.81
[INFO] [stderr]    Compiling futures-channel v0.3.17
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling futures-macro v0.3.17
[INFO] [stderr]    Compiling futures-task v0.3.17
[INFO] [stderr]    Compiling futures-util v0.3.17
[INFO] [stderr]     Checking futures-sink v0.3.17
[INFO] [stderr]     Checking slab v0.4.5
[INFO] [stderr]     Checking futures-io v0.3.17
[INFO] [stderr]     Checking pin-project-lite v0.2.7
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]     Checking futures-executor v0.3.17
[INFO] [stderr]     Checking futures v0.3.17
[INFO] [stderr]     Checking diny_core v0.2.4
[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/diny_core-0.2.4/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(generic_associated_types)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the attribute
[INFO] [stdout]   |
[INFO] [stdout]   = help: the feature `generic_associated_types` has been stable since `1.65.0` and no longer requires an attribute to enable
[INFO] [stdout] 
[INFO] [stdout] 
[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 `diny_core` (lib) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "3f0a6f95cb924ecb8dd3a0e7b2e225777daa0a2598278d1ae00c2cfc99d86058", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3f0a6f95cb924ecb8dd3a0e7b2e225777daa0a2598278d1ae00c2cfc99d86058", kill_on_drop: false }`
[INFO] [stdout] 3f0a6f95cb924ecb8dd3a0e7b2e225777daa0a2598278d1ae00c2cfc99d86058
