[INFO] fetching crate str0 0.1.8...
[INFO] testing str0-0.1.8 against 1.91.0 for beta-1.92-2
[INFO] extracting crate str0 0.1.8 into /workspace/builds/worker-5-tc1/source
[INFO] started tweaking crates.io crate str0 0.1.8
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate str0 0.1.8
[INFO] tweaked toml for crates.io crate str0 0.1.8 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate str0 0.1.8 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 52 packages to latest compatible versions
[INFO] [stderr]       Adding roaring v0.10.12 (available: v0.11.2)
[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 static_init_macro v1.0.4
[INFO] [stderr]   Downloaded aok v0.1.18
[INFO] [stderr]   Downloaded loginit v0.1.18
[INFO] [stderr]   Downloaded static_init v1.0.4
[INFO] [stderr]   Downloaded roaring v0.10.12
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 2c1e685e94ae0c929fe504df75eb4a2d5a055d00381d7dd059f4fd540c4872a5
[INFO] running `Command { std: "docker" "start" "-a" "2c1e685e94ae0c929fe504df75eb4a2d5a055d00381d7dd059f4fd540c4872a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2c1e685e94ae0c929fe504df75eb4a2d5a055d00381d7dd059f4fd540c4872a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2c1e685e94ae0c929fe504df75eb4a2d5a055d00381d7dd059f4fd540c4872a5", kill_on_drop: false }`
[INFO] [stdout] 2c1e685e94ae0c929fe504df75eb4a2d5a055d00381d7dd059f4fd540c4872a5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 2801334f0ecbe942ba2d6870433127f86a0586f93c54cac6ace3ba282a582d82
[INFO] running `Command { std: "docker" "start" "-a" "2801334f0ecbe942ba2d6870433127f86a0586f93c54cac6ace3ba282a582d82", kill_on_drop: false }`
[INFO] [stderr]    Compiling roaring v0.10.12
[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/roaring-0.10.12/src/lib.rs:11:31
[INFO] [stdout]    |
[INFO] [stdout] 11 | #![cfg_attr(feature = "simd", feature(portable_simd))]
[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 `roaring` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "2801334f0ecbe942ba2d6870433127f86a0586f93c54cac6ace3ba282a582d82", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2801334f0ecbe942ba2d6870433127f86a0586f93c54cac6ace3ba282a582d82", kill_on_drop: false }`
[INFO] [stdout] 2801334f0ecbe942ba2d6870433127f86a0586f93c54cac6ace3ba282a582d82