[INFO] fetching crate refault 0.3.0...
[INFO] testing refault-0.3.0 against 1.91.0 for beta-1.92-2
[INFO] extracting crate refault 0.3.0 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate refault 0.3.0
[INFO] removed 0 missing examples
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate refault 0.3.0
[INFO] tweaked toml for crates.io crate refault 0.3.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate refault 0.3.0 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] crate crates.io crate refault 0.3.0 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" "+1.91.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded pin-arc v0.2.1
[INFO] [stderr]   Downloaded value-bag v1.11.1
[INFO] [stderr]   Downloaded feature-extension-for-wasm-bindgen-futures v0.2.2
[INFO] [stderr]   Downloaded feature-extension-for-smol v0.2.2
[INFO] [stderr]   Downloaded cooked-waker v5.0.0
[INFO] [stderr]   Downloaded priority-queue v2.5.0
[INFO] [stderr]   Downloaded feature-extension-for-async-std v0.2.2
[INFO] [stderr]   Downloaded gloo-timers v0.3.0
[INFO] [stderr]   Downloaded async-global-executor v2.4.1
[INFO] [stderr]   Downloaded async-fs v2.1.3
[INFO] [stderr]   Downloaded atomic-time v0.1.5
[INFO] [stderr]   Downloaded polling v3.10.0
[INFO] [stderr]   Downloaded async-process v2.4.0
[INFO] [stderr]   Downloaded async-io v2.5.0
[INFO] [stderr]   Downloaded async-signal v0.2.12
[INFO] [stderr]   Downloaded kv-log-macro v1.0.7
[INFO] [stderr]   Downloaded radium v1.1.1
[INFO] [stderr]   Downloaded async-std v1.13.2
[INFO] [stderr]   Downloaded libc v1.0.0-alpha.1
[INFO] [stderr]   Downloaded agnostic-lite v0.5.6
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 54137f2cffaf2b305364c1be1230526b4924d97a600a9e881c90b38cc3d83b3c
[INFO] running `Command { std: "docker" "start" "-a" "54137f2cffaf2b305364c1be1230526b4924d97a600a9e881c90b38cc3d83b3c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "54137f2cffaf2b305364c1be1230526b4924d97a600a9e881c90b38cc3d83b3c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "54137f2cffaf2b305364c1be1230526b4924d97a600a9e881c90b38cc3d83b3c", kill_on_drop: false }`
[INFO] [stdout] 54137f2cffaf2b305364c1be1230526b4924d97a600a9e881c90b38cc3d83b3c
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5892eecc1e7349fd28cff301ee2b0c1f8c30ddfd17fbdb081b9c69409a1d1bc8
[INFO] running `Command { std: "docker" "start" "-a" "5892eecc1e7349fd28cff301ee2b0c1f8c30ddfd17fbdb081b9c69409a1d1bc8", kill_on_drop: false }`
[INFO] [stderr]    Compiling cfg-if v1.0.1
[INFO] [stderr]    Compiling libc v0.2.174
[INFO] [stderr]    Compiling lock_api v0.4.13
[INFO] [stderr]    Compiling zerocopy v0.8.26
[INFO] [stderr]    Compiling scopeguard v1.2.0
[INFO] [stderr]    Compiling slab v0.4.10
[INFO] [stderr]    Compiling memchr v2.7.5
[INFO] [stderr]    Compiling libc v1.0.0-alpha.1
[INFO] [stderr]    Compiling hashbrown v0.15.4
[INFO] [stderr]    Compiling typeid v1.0.3
[INFO] [stderr]    Compiling radium v1.1.1
[INFO] [stderr]    Compiling rand_core v0.9.3
[INFO] [stderr]    Compiling futures-util v0.3.31
[INFO] [stderr]    Compiling pin-arc v0.2.1
[INFO] [stderr]    Compiling either v1.15.0
[INFO] [stderr]    Compiling cooked-waker v5.0.0
[INFO] [stderr]    Compiling sync_wrapper v1.0.2
[INFO] [stderr]    Compiling indexmap v2.10.0
[INFO] [stderr]    Compiling parking_lot_core v0.9.11
[INFO] [stderr]    Compiling parking_lot v0.12.4
[INFO] [stderr]    Compiling priority-queue v2.5.0
[INFO] [stderr]    Compiling futures-intrusive v0.5.0
[INFO] [stderr]    Compiling ppv-lite86 v0.2.21
[INFO] [stderr]    Compiling rand_chacha v0.9.0
[INFO] [stderr]    Compiling futures v0.3.31
[INFO] [stderr]    Compiling refault v0.3.0 (/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(abort_unwind)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(type_alias_impl_trait)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(impl_trait_in_assoc_type)]
[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 `refault` (lib) due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "5892eecc1e7349fd28cff301ee2b0c1f8c30ddfd17fbdb081b9c69409a1d1bc8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5892eecc1e7349fd28cff301ee2b0c1f8c30ddfd17fbdb081b9c69409a1d1bc8", kill_on_drop: false }`
[INFO] [stdout] 5892eecc1e7349fd28cff301ee2b0c1f8c30ddfd17fbdb081b9c69409a1d1bc8