[INFO] fetching crate vertigo-html 0.1.0-alpha.2...
[INFO] testing vertigo-html-0.1.0-alpha.2 against 1.91.0 for beta-1.92-2
[INFO] extracting crate vertigo-html 0.1.0-alpha.2 into /workspace/builds/worker-1-tc1/source
[INFO] started tweaking crates.io crate vertigo-html 0.1.0-alpha.2
[INFO] finished tweaking crates.io crate vertigo-html 0.1.0-alpha.2
[INFO] tweaked toml for crates.io crate vertigo-html 0.1.0-alpha.2 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate vertigo-html 0.1.0-alpha.2 on toolchain 1.91.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.91.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.91.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 30 packages to latest compatible versions
[INFO] [stderr]       Adding vertigo v0.1.1 (available: v0.8.3)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.91.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded vertigo-html-macro v0.1.0-alpha.2
[INFO] [stderr]   Downloaded vertigo-macro v0.1.1
[INFO] [stderr]   Downloaded syn-rsx v0.8.1
[INFO] [stderr]   Downloaded vertigo v0.1.1
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4a69292611e088fe50c1f0dafa42e9da704c12adcb550065f2cc2e8ca44f2153
[INFO] running `Command { std: "docker" "start" "-a" "4a69292611e088fe50c1f0dafa42e9da704c12adcb550065f2cc2e8ca44f2153", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4a69292611e088fe50c1f0dafa42e9da704c12adcb550065f2cc2e8ca44f2153", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4a69292611e088fe50c1f0dafa42e9da704c12adcb550065f2cc2e8ca44f2153", kill_on_drop: false }`
[INFO] [stdout] 4a69292611e088fe50c1f0dafa42e9da704c12adcb550065f2cc2e8ca44f2153
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8c73ef29fd020215760e618785c2e4cd2de5287e571fe264111bdc4e480104b7
[INFO] running `Command { std: "docker" "start" "-a" "8c73ef29fd020215760e618785c2e4cd2de5287e571fe264111bdc4e480104b7", kill_on_drop: false }`
[INFO] [stderr]    Compiling ucd-trie v0.1.7
[INFO] [stderr]    Compiling memchr v2.7.6
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling itertools v0.10.5
[INFO] [stderr]    Compiling vertigo v0.1.1
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling log v0.4.28
[INFO] [stderr]    Compiling pest v2.8.3
[INFO] [stderr]    Compiling pest_meta v2.8.3
[INFO] [stderr]    Compiling pest_generator v2.8.3
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling syn-rsx v0.8.1
[INFO] [stderr]    Compiling pest_derive v2.8.3
[INFO] [stderr]    Compiling vertigo-macro v0.1.1
[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-1949cf8c6b5b557f/vertigo-0.1.1/src/lib.rs:85:1
[INFO] [stdout]    |
[INFO] [stdout] 85 | #![feature(try_trait_v2)] // https://github.com/rust-lang/rust/issues/84277
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `vertigo` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "8c73ef29fd020215760e618785c2e4cd2de5287e571fe264111bdc4e480104b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8c73ef29fd020215760e618785c2e4cd2de5287e571fe264111bdc4e480104b7", kill_on_drop: false }`
[INFO] [stdout] 8c73ef29fd020215760e618785c2e4cd2de5287e571fe264111bdc4e480104b7