[INFO] fetching crate site_icons 0.1.8...
[INFO] testing site_icons-0.1.8 against 1.60.0 for beta-1.61-1
[INFO] extracting crate site_icons 0.1.8 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate site_icons 0.1.8 on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate site_icons 0.1.8
[INFO] finished tweaking crates.io crate site_icons 0.1.8
[INFO] tweaked toml for crates.io crate site_icons 0.1.8 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate crates.io crate site_icons 0.1.8 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded mime_4 v0.4.0-a.0
[INFO] [stderr]   Downloaded clap v3.1.7
[INFO] [stderr]   Downloaded reqwest-wasm v0.11.0
[INFO] [stderr]   Downloaded tokio-futures-byteorder v0.2.0
[INFO] [stderr]   Downloaded quoted-string v0.2.2
[INFO] [stderr]   Downloaded mime-parse-4 v0.0.0
[INFO] [stderr]   Downloaded wasm-streams v0.1.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 7c72fbd339e11f08e1d4a8cc2517740290e04247b8ba147eb0be15c7d4870067
[INFO] running `Command { std: "docker" "start" "-a" "7c72fbd339e11f08e1d4a8cc2517740290e04247b8ba147eb0be15c7d4870067", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7c72fbd339e11f08e1d4a8cc2517740290e04247b8ba147eb0be15c7d4870067", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7c72fbd339e11f08e1d4a8cc2517740290e04247b8ba147eb0be15c7d4870067", kill_on_drop: false }`
[INFO] [stdout] 7c72fbd339e11f08e1d4a8cc2517740290e04247b8ba147eb0be15c7d4870067
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 92b783ced3798e0ba4644c7918a8060914133da8e42c3bfb5a2e5bb5f54c6738
[INFO] running `Command { std: "docker" "start" "-a" "92b783ced3798e0ba4644c7918a8060914133da8e42c3bfb5a2e5bb5f54c6738", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.90
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]    Compiling mime-parse-4 v0.0.0
[INFO] [stderr]    Compiling cookie v0.14.4
[INFO] [stderr]    Compiling quoted-string v0.2.2
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling parking_lot_core v0.9.2
[INFO] [stderr]    Compiling getrandom v0.2.6
[INFO] [stderr]    Compiling mio v0.8.2
[INFO] [stderr]    Compiling tokio v0.2.25
[INFO] [stderr]    Compiling openssl-sys v0.9.72
[INFO] [stderr]    Compiling env_logger v0.9.0
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling mime_4 v0.4.0-a.0
[INFO] [stderr]    Compiling parking_lot v0.12.0
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand_pcg v0.2.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling openssl v0.10.38
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling tokio-futures-byteorder v0.2.0
[INFO] [stderr]    Compiling phf_generator v0.10.0
[INFO] [stderr]    Compiling phf_generator v0.8.0
[INFO] [stderr]    Compiling phf_codegen v0.8.0
[INFO] [stderr]    Compiling string_cache_codegen v0.5.2
[INFO] [stderr]    Compiling selectors v0.22.0
[INFO] [stderr]    Compiling markup5ever v0.10.1
[INFO] [stderr]    Compiling native-tls v0.2.10
[INFO] [stderr]    Compiling darling_core v0.13.1
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling serde_derive v1.0.136
[INFO] [stderr]    Compiling futures-macro v0.3.21
[INFO] [stderr]    Compiling tokio-macros v1.7.0
[INFO] [stderr]    Compiling tracing-attributes v0.1.20
[INFO] [stderr]    Compiling phf_macros v0.8.0
[INFO] [stderr]    Compiling time-macros-impl v0.1.2
[INFO] [stderr]    Compiling cssparser v0.27.2
[INFO] [stderr]    Compiling html5ever v0.25.2
[INFO] [stderr]    Compiling cssparser-macros v0.6.0
[INFO] [stderr]    Compiling derive_more v0.99.17
[INFO] [stderr]    Compiling clap_derive v3.1.7
[INFO] [stderr]    Compiling darling_macro v0.13.1
[INFO] [stderr]    Compiling time-macros v0.1.1
[INFO] [stderr]    Compiling tokio v1.17.0
[INFO] [stderr]    Compiling time v0.2.27
[INFO] [stderr]    Compiling futures-util v0.3.21
[INFO] [stderr]    Compiling phf v0.8.0
[INFO] [stderr]    Compiling darling v0.13.1
[INFO] [stderr]    Compiling tracing v0.1.32
[INFO] [stderr]    Compiling serde_with_macros v1.5.1
[INFO] [stderr]    Compiling clap v3.1.7
[INFO] [stderr]    Compiling futures-executor v0.3.21
[INFO] [stderr]    Compiling futures v0.3.21
[INFO] [stderr]    Compiling tokio-util v0.7.1
[INFO] [stderr]    Compiling tokio-native-tls v0.3.0
[INFO] [stderr]    Compiling h2 v0.3.13
[INFO] [stderr]    Compiling url v2.2.2
[INFO] [stderr]    Compiling string_cache v0.8.4
[INFO] [stderr]    Compiling serde_json v1.0.79
[INFO] [stderr]    Compiling serde_urlencoded v0.7.1
[INFO] [stderr]    Compiling serde_with v1.12.0
[INFO] [stderr]    Compiling vec1 v1.8.0
[INFO] [stderr]    Compiling publicsuffix v1.5.6
[INFO] [stderr]    Compiling cookie_store v0.12.0
[INFO] [stderr]    Compiling hyper v0.14.18
[INFO] [stderr]    Compiling scraper v0.12.0
[INFO] [stderr]    Compiling hyper-tls v0.5.0
[INFO] [stderr]    Compiling reqwest-wasm v0.11.0
[INFO] [stderr]    Compiling site_icons v0.1.8 (/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(async_closure, map_into_keys_values, bool_to_option)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[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 `site_icons` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "92b783ced3798e0ba4644c7918a8060914133da8e42c3bfb5a2e5bb5f54c6738", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "92b783ced3798e0ba4644c7918a8060914133da8e42c3bfb5a2e5bb5f54c6738", kill_on_drop: false }`
[INFO] [stdout] 92b783ced3798e0ba4644c7918a8060914133da8e42c3bfb5a2e5bb5f54c6738