[INFO] fetching crate vsched_scheduler 0.2.1...
[INFO] testing vsched_scheduler-0.2.1 against 1.95.0 for beta-1.96-2
[INFO] extracting crate vsched_scheduler 0.2.1 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate vsched_scheduler 0.2.1
[INFO] finished tweaking crates.io crate vsched_scheduler 0.2.1
[INFO] tweaked toml for crates.io crate vsched_scheduler 0.2.1 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate vsched_scheduler 0.2.1 on toolchain 1.95.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate vsched_scheduler 0.2.1 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" "+1.95.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded vsched_utils v0.1.0
[INFO] [stderr]   Downloaded vsched_config v0.1.0
[INFO] [stderr]   Downloaded cpumask v0.1.0
[INFO] [stderr]   Downloaded bitmaps v3.2.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f891f3fe1fa6e38fbfeb4abce57baa45dbe527ab395dd95f50d0bf27206fc44b
[INFO] running `Command { std: "docker" "start" "-a" "f891f3fe1fa6e38fbfeb4abce57baa45dbe527ab395dd95f50d0bf27206fc44b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f891f3fe1fa6e38fbfeb4abce57baa45dbe527ab395dd95f50d0bf27206fc44b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f891f3fe1fa6e38fbfeb4abce57baa45dbe527ab395dd95f50d0bf27206fc44b", kill_on_drop: false }`
[INFO] [stdout] f891f3fe1fa6e38fbfeb4abce57baa45dbe527ab395dd95f50d0bf27206fc44b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 89320c6ce6c3a2ca516f8fa64374a0e60aeb6eb580074f2362c427717f76a4b8
[INFO] running `Command { std: "docker" "start" "-a" "89320c6ce6c3a2ca516f8fa64374a0e60aeb6eb580074f2362c427717f76a4b8", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.7.6
[INFO] [stderr]    Compiling regex-syntax v0.8.8
[INFO] [stderr]    Compiling crossbeam-utils v0.8.21
[INFO] [stderr]    Compiling byteorder v1.5.0
[INFO] [stderr]    Compiling bitmaps v3.2.1
[INFO] [stderr]    Compiling heapless v0.8.0
[INFO] [stderr]    Compiling vsched_utils v0.1.0
[INFO] [stderr]    Compiling hash32 v0.3.1
[INFO] [stderr]    Compiling crossbeam v0.8.4
[INFO] [stderr]    Compiling aho-corasick v1.1.3
[INFO] [stderr]    Compiling cpumask v0.1.0
[INFO] [stderr]    Compiling regex-automata v0.4.13
[INFO] [stderr]    Compiling regex v1.12.2
[INFO] [stderr]    Compiling vsched_config v0.1.0
[INFO] [stderr]    Compiling vsched_scheduler v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:10:1
[INFO] [stdout]    |
[INFO] [stdout] 10 | #![feature(unsafe_cell_access)]
[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 `vsched_scheduler` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "89320c6ce6c3a2ca516f8fa64374a0e60aeb6eb580074f2362c427717f76a4b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "89320c6ce6c3a2ca516f8fa64374a0e60aeb6eb580074f2362c427717f76a4b8", kill_on_drop: false }`
[INFO] [stdout] 89320c6ce6c3a2ca516f8fa64374a0e60aeb6eb580074f2362c427717f76a4b8
