[INFO] fetching crate corenn-kernels 0.1.1...
[INFO] checking corenn-kernels-0.1.1 against 1.95.0 for pr-155915
[INFO] extracting crate corenn-kernels 0.1.1 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate corenn-kernels 0.1.1
[INFO] finished tweaking crates.io crate corenn-kernels 0.1.1
[INFO] tweaked toml for crates.io crate corenn-kernels 0.1.1 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate corenn-kernels 0.1.1 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 corenn-kernels 0.1.1 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded bytemuck_derive v1.10.2
[INFO] [stderr]   Downloaded proc-macro2 v1.0.104
[INFO] [stderr]   Downloaded bytemuck v1.24.0
[INFO] [stderr]   Downloaded zerocopy v0.8.31
[INFO] [stderr]   Downloaded zerocopy-derive v0.8.31
[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] fb3dfff6c9cdbb00d49eb4892c3ab787d2ea29017bef7e0c6e9c6d7a6534cbbd
[INFO] running `Command { std: "docker" "start" "-a" "fb3dfff6c9cdbb00d49eb4892c3ab787d2ea29017bef7e0c6e9c6d7a6534cbbd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fb3dfff6c9cdbb00d49eb4892c3ab787d2ea29017bef7e0c6e9c6d7a6534cbbd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fb3dfff6c9cdbb00d49eb4892c3ab787d2ea29017bef7e0c6e9c6d7a6534cbbd", kill_on_drop: false }`
[INFO] [stdout] fb3dfff6c9cdbb00d49eb4892c3ab787d2ea29017bef7e0c6e9c6d7a6534cbbd
[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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 80095e24fefdef92072dda4799fd821796b665699f9f3355ac02210bc532ef3e
[INFO] running `Command { std: "docker" "start" "-a" "80095e24fefdef92072dda4799fd821796b665699f9f3355ac02210bc532ef3e", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.104
[INFO] [stderr]    Compiling unicode-ident v1.0.22
[INFO] [stderr]    Compiling quote v1.0.42
[INFO] [stderr]    Compiling zerocopy v0.8.31
[INFO] [stderr]    Compiling libc v0.2.178
[INFO] [stderr]    Compiling syn v2.0.111
[INFO] [stderr]     Checking getrandom v0.2.16
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]    Compiling zerocopy-derive v0.8.31
[INFO] [stderr]    Compiling bytemuck_derive v1.10.2
[INFO] [stderr]     Checking bytemuck v1.24.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.21
[INFO] [stderr]     Checking half v2.7.1
[INFO] [stderr]     Checking corenn-kernels v0.1.1 (/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(f16)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `corenn-kernels` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "80095e24fefdef92072dda4799fd821796b665699f9f3355ac02210bc532ef3e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "80095e24fefdef92072dda4799fd821796b665699f9f3355ac02210bc532ef3e", kill_on_drop: false }`
[INFO] [stdout] 80095e24fefdef92072dda4799fd821796b665699f9f3355ac02210bc532ef3e
