[INFO] fetching crate ra-ap-rustc_data_structures 0.28.0...
[INFO] testing ra-ap-rustc_data_structures-0.28.0 against 1.91.0 for beta-1.92-2
[INFO] extracting crate ra-ap-rustc_data_structures 0.28.0 into /workspace/builds/worker-3-tc1/source
[INFO] started tweaking crates.io crate ra-ap-rustc_data_structures 0.28.0
[INFO] finished tweaking crates.io crate ra-ap-rustc_data_structures 0.28.0
[INFO] tweaked toml for crates.io crate ra-ap-rustc_data_structures 0.28.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate ra-ap-rustc_data_structures 0.28.0 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] 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 85 packages to latest compatible versions
[INFO] [stderr]       Adding elsa v1.7.1 (available: v1.11.2)
[INFO] [stderr]       Adding indexmap v2.7.1 (available: v2.12.0)
[INFO] [stderr]       Adding itertools v0.11.0 (available: v0.14.0)
[INFO] [stderr]       Adding measureme v10.1.3 (available: v12.0.3)
[INFO] [stderr]       Adding memmap2 v0.2.3 (available: v0.9.9)
[INFO] [stderr]       Adding ra-ap-rustc_index v0.28.0 (available: v0.139.0)
[INFO] [stderr]       Adding ra-ap-rustc_macros v0.28.0 (available: v0.83.0)
[INFO] [stderr]       Adding ra-ap-rustc_serialize v0.28.0 (available: v0.80.0)
[INFO] [stderr]       Adding rustc-hash v1.1.0 (available: v2.1.1)
[INFO] [stderr]       Adding windows v0.48.0 (available: v0.62.2)
[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 ra-ap-rustc_macros v0.28.0
[INFO] [stderr]   Downloaded ra-ap-rustc_index_macros v0.28.0
[INFO] [stderr]   Downloaded elsa v1.7.1
[INFO] [stderr]   Downloaded perf-event-open-sys v3.0.0
[INFO] [stderr]   Downloaded memmap2 v0.2.3
[INFO] [stderr]   Downloaded measureme v10.1.3
[INFO] [stderr]   Downloaded ra-ap-rustc_index v0.28.0
[INFO] [stderr]   Downloaded ena v0.14.3
[INFO] [stderr]   Downloaded ra-ap-rustc_arena v0.28.0
[INFO] [stderr]   Downloaded ra-ap-rustc_graphviz v0.28.0
[INFO] [stderr]   Downloaded rustc-rayon v0.5.1
[INFO] [stderr]   Downloaded ra-ap-rustc_serialize v0.28.0
[INFO] [stderr]   Downloaded rustc-rayon-core v0.5.1
[INFO] [stderr]   Downloaded thin-vec v0.2.14
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] ab9d961a51604ab987f79eb896a2364c68ac071ecfcaf854162bd1996a7eb3e4
[INFO] running `Command { std: "docker" "start" "-a" "ab9d961a51604ab987f79eb896a2364c68ac071ecfcaf854162bd1996a7eb3e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ab9d961a51604ab987f79eb896a2364c68ac071ecfcaf854162bd1996a7eb3e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ab9d961a51604ab987f79eb896a2364c68ac071ecfcaf854162bd1996a7eb3e4", kill_on_drop: false }`
[INFO] [stdout] ab9d961a51604ab987f79eb896a2364c68ac071ecfcaf854162bd1996a7eb3e4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 916cac3464b07c8a8c27e37162d405efeda17c1bb83b3912a0250bcebb0f6659
[INFO] running `Command { std: "docker" "start" "-a" "916cac3464b07c8a8c27e37162d405efeda17c1bb83b3912a0250bcebb0f6659", kill_on_drop: false }`
[INFO] [stderr]    Compiling find-msvc-tools v0.1.4
[INFO] [stderr]    Compiling syn v2.0.108
[INFO] [stderr]    Compiling smallvec v1.15.1
[INFO] [stderr]    Compiling memchr v2.7.6
[INFO] [stderr]    Compiling rustix v1.1.2
[INFO] [stderr]    Compiling getrandom v0.3.4
[INFO] [stderr]    Compiling hashbrown v0.15.5
[INFO] [stderr]    Compiling linux-raw-sys v0.11.0
[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/smallvec-1.15.1/src/lib.rs:96:37
[INFO] [stdout]    |
[INFO] [stdout] 96 | #![cfg_attr(feature = "may_dangle", feature(dropck_eyepatch))]
[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 `smallvec` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "916cac3464b07c8a8c27e37162d405efeda17c1bb83b3912a0250bcebb0f6659", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "916cac3464b07c8a8c27e37162d405efeda17c1bb83b3912a0250bcebb0f6659", kill_on_drop: false }`
[INFO] [stdout] 916cac3464b07c8a8c27e37162d405efeda17c1bb83b3912a0250bcebb0f6659