[INFO] fetching crate numscan 0.1.0...
[INFO] testing numscan-0.1.0 against 1.75.0 for beta-1.76-1
[INFO] extracting crate numscan 0.1.0 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate numscan 0.1.0 on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate numscan 0.1.0
[INFO] finished tweaking crates.io crate numscan 0.1.0
[INFO] tweaked toml for crates.io crate numscan 0.1.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded round_mult v0.1.3
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c629ee9cf21144ef10ac626ff2e76306672261baba516fffb701f9897a276031
[INFO] running `Command { std: "docker" "start" "-a" "c629ee9cf21144ef10ac626ff2e76306672261baba516fffb701f9897a276031", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c629ee9cf21144ef10ac626ff2e76306672261baba516fffb701f9897a276031", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c629ee9cf21144ef10ac626ff2e76306672261baba516fffb701f9897a276031", kill_on_drop: false }`
[INFO] [stdout] c629ee9cf21144ef10ac626ff2e76306672261baba516fffb701f9897a276031
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dda014e4fff0dd7ee2342ca05c6cae880ea9a16b3c0afa664b16a409e5d37335
[INFO] running `Command { std: "docker" "start" "-a" "dda014e4fff0dd7ee2342ca05c6cae880ea9a16b3c0afa664b16a409e5d37335", kill_on_drop: false }`
[INFO] [stderr]    Compiling semver v1.0.21
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]    Compiling round_mult v0.1.3
[INFO] [stderr]    Compiling numscan v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:39:12
[INFO] [stdout]    |
[INFO] [stdout] 39 | #![feature(portable_simd)]
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no function or associated item named `of` found for struct `NonZeroPow2` in the current scope
[INFO] [stdout]    --> src/lib.rs:112:46
[INFO] [stdout]     |
[INFO] [stdout] 112 |         let lanes = round_mult::NonZeroPow2::of::<Simd>();
[INFO] [stdout]     |                                              ^^ function or associated item not found in `NonZeroPow2<_>`
[INFO] [stdout]     |
[INFO] [stdout] note: if you're trying to build a new `NonZeroPow2<_>` consider using one of the following associated functions:
[INFO] [stdout]       NonZeroPow2::<N>::v2
[INFO] [stdout]       NonZeroPow2::<N>::v4
[INFO] [stdout]       NonZeroPow2::<N>::v8
[INFO] [stdout]       NonZeroPow2::<N>::v16
[INFO] [stdout]       and 6 others
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/round_mult-0.1.3/src/nzp/mod.rs:29:2
[INFO] [stdout]     |
[INFO] [stdout] 29  |     pub fn v2() -> Self {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 41  |     pub fn v4() -> Self {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 53  |     pub fn v8() -> Self {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 65  |     pub fn v16() -> Self {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0554, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `numscan` (lib) due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "dda014e4fff0dd7ee2342ca05c6cae880ea9a16b3c0afa664b16a409e5d37335", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dda014e4fff0dd7ee2342ca05c6cae880ea9a16b3c0afa664b16a409e5d37335", kill_on_drop: false }`
[INFO] [stdout] dda014e4fff0dd7ee2342ca05c6cae880ea9a16b3c0afa664b16a409e5d37335
