[INFO] fetching crate webrune 0.1.2...
[INFO] testing webrune-0.1.2 against 1.99.0-beta.8 for beta-1.100-2
[INFO] extracting crate webrune 0.1.2 into /workspace/builds/worker-2-tc1/source
[INFO] removed /workspace/builds/worker-2-tc1/source/rust-toolchain.toml
[INFO] started tweaking crates.io crate webrune 0.1.2
[INFO] finished tweaking crates.io crate webrune 0.1.2
[INFO] tweaked toml for crates.io crate webrune 0.1.2 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate webrune 0.1.2 on toolchain 1.99.0-beta.8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.99.0-beta.8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate webrune 0.1.2 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" "+1.99.0-beta.8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tokio-macros v2.6.0
[INFO] [stderr]   Downloaded mio v1.1.1
[INFO] [stderr]   Downloaded socket2 v0.6.1
[INFO] [stderr]   Downloaded ryu v1.0.22
[INFO] [stderr]   Downloaded zmij v1.0.17
[INFO] [stderr]   Downloaded matchit v0.8.6
[INFO] [stderr]   Downloaded hyper-util v0.1.19
[INFO] [stderr]   Downloaded hyper v1.8.1
[INFO] [stderr]   Downloaded tokio v1.49.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3111399a4047eeb3a02b7a90e478d715f38a8c6669b5c4b49d30a17385265909" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 3ecc971c08debe7f4bf1d0dc3b280d1e3b8281cb3fa526c53a97ebcb1ce03d60
[INFO] running `Command { std: "docker" "start" "3ecc971c08debe7f4bf1d0dc3b280d1e3b8281cb3fa526c53a97ebcb1ce03d60", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3ecc971c08debe7f4bf1d0dc3b280d1e3b8281cb3fa526c53a97ebcb1ce03d60", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "3ecc971c08debe7f4bf1d0dc3b280d1e3b8281cb3fa526c53a97ebcb1ce03d60" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3ecc971c08debe7f4bf1d0dc3b280d1e3b8281cb3fa526c53a97ebcb1ce03d60", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "3ecc971c08debe7f4bf1d0dc3b280d1e3b8281cb3fa526c53a97ebcb1ce03d60" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.105
[INFO] [stderr]    Compiling libc v0.2.180
[INFO] [stderr]    Compiling quote v1.0.43
[INFO] [stderr]    Compiling unicode-ident v1.0.22
[INFO] [stderr]    Compiling bytes v1.11.0
[INFO] [stderr]    Compiling futures-core v0.3.31
[INFO] [stderr]    Compiling once_cell v1.21.3
[INFO] [stderr]    Compiling futures-sink v0.3.31
[INFO] [stderr]    Compiling indexmap v2.12.1
[INFO] [stderr]    Compiling slab v0.4.11
[INFO] [stderr]    Compiling zmij v1.0.17
[INFO] [stderr]    Compiling futures-channel v0.3.31
[INFO] [stderr]    Compiling tracing-core v0.1.36
[INFO] [stderr]    Compiling futures-task v0.3.31
[INFO] [stderr]    Compiling futures-util v0.3.31
[INFO] [stderr]    Compiling ryu v1.0.22
[INFO] [stderr]    Compiling http v1.4.0
[INFO] [stderr]    Compiling ipnet v2.11.0
[INFO] [stderr]    Compiling tracing v0.1.44
[INFO] [stderr]    Compiling memchr v2.7.6
[INFO] [stderr]    Compiling matchit v0.8.6
[INFO] [stderr]    Compiling syn v2.0.114
[INFO] [stderr]    Compiling http-body v1.0.1
[INFO] [stderr]    Compiling http-body-util v0.1.3
[INFO] [stderr]    Compiling parking_lot_core v0.9.12
[INFO] [stderr]    Compiling errno v0.3.14
[INFO] [stderr]    Compiling socket2 v0.6.1
[INFO] [stderr]    Compiling parking_lot v0.12.5
[INFO] [stderr]    Compiling signal-hook-registry v1.4.8
[INFO] [stderr]    Compiling mio v1.1.1
[INFO] [stderr]    Compiling serde_json v1.0.149
[INFO] [stderr]    Compiling tokio-macros v2.6.0
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling tokio v1.49.0
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling serde_urlencoded v0.7.1
[INFO] [stderr]    Compiling tokio-util v0.7.18
[INFO] [stderr]    Compiling h2 v0.4.13
[INFO] [stderr]    Compiling hyper v1.8.1
[INFO] [stderr]    Compiling hyper-util v0.1.19
[INFO] [stderr]    Compiling webrune v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> src/lib.rs:78:1
[INFO] [stdout]    |
[INFO] [stdout] 78 | #![feature(return_type_notation)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `Flow<Infallible, E>: Residual<C>` is not satisfied
[INFO] [stdout]    --> src/flow.rs:116:21
[INFO] [stdout]     |
[INFO] [stdout] 116 |     type Residual = Flow<Infallible, E>;
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^ unsatisfied trait bound
[INFO] [stdout]     |
[INFO] [stdout] help: the nightly-only, unstable trait `Residual<C>` is not implemented for `Flow<Infallible, E>`
[INFO] [stdout]    --> src/flow.rs:54:1
[INFO] [stdout]     |
[INFO] [stdout]  54 | pub enum Flow<C, E> {
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] help: the following other types implement trait `Residual<O>`
[INFO] [stdout]    --> /rustc/dfb0accb7f508ae8be965d8629557221c889dd98/library/core/src/ops/control_flow.rs:138:0
[INFO] [stdout]     |
[INFO] [stdout]     = note: `ControlFlow<B, Infallible>` implements `Residual<C>`
[INFO] [stdout]    --> /rustc/dfb0accb7f508ae8be965d8629557221c889dd98/library/core/src/result.rs:2209:0
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Result<Infallible, E>` implements `Residual<T>`
[INFO] [stdout]    --> /rustc/dfb0accb7f508ae8be965d8629557221c889dd98/library/core/src/option.rs:2901:0
[INFO] [stdout]     |
[INFO] [stdout]     = note: `std::option::Option<Infallible>` implements `Residual<T>`
[INFO] [stdout] note: required by a bound in `std::ops::Try::Residual`
[INFO] [stdout]    --> /rustc/dfb0accb7f508ae8be965d8629557221c889dd98/library/core/src/ops/try_trait.rs:160:4
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0277, E0554.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `webrune` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "3ecc971c08debe7f4bf1d0dc3b280d1e3b8281cb3fa526c53a97ebcb1ce03d60", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3ecc971c08debe7f4bf1d0dc3b280d1e3b8281cb3fa526c53a97ebcb1ce03d60", kill_on_drop: false }`
[INFO] [stdout] 3ecc971c08debe7f4bf1d0dc3b280d1e3b8281cb3fa526c53a97ebcb1ce03d60
