[INFO] fetching crate embedded-hal-aht2x 0.1.0...
[INFO] testing embedded-hal-aht2x-0.1.0 against 1.90.0 for beta-1.91-3
[INFO] extracting crate embedded-hal-aht2x 0.1.0 into /workspace/builds/worker-0-tc1/source
[INFO] started tweaking crates.io crate embedded-hal-aht2x 0.1.0
[INFO] finished tweaking crates.io crate embedded-hal-aht2x 0.1.0
[INFO] tweaked toml for crates.io crate embedded-hal-aht2x 0.1.0 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate embedded-hal-aht2x 0.1.0 on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "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" "+1.90.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 17 packages to latest compatible versions
[INFO] [stderr]       Adding defmt v0.3.100 (available: v1.0.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dbef4ef31512ddcf9836dc34eeb995ab50e149441d6e652422d3a7b5b3137f83
[INFO] running `Command { std: "docker" "start" "-a" "dbef4ef31512ddcf9836dc34eeb995ab50e149441d6e652422d3a7b5b3137f83", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dbef4ef31512ddcf9836dc34eeb995ab50e149441d6e652422d3a7b5b3137f83", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dbef4ef31512ddcf9836dc34eeb995ab50e149441d6e652422d3a7b5b3137f83", kill_on_drop: false }`
[INFO] [stdout] dbef4ef31512ddcf9836dc34eeb995ab50e149441d6e652422d3a7b5b3137f83
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e59c40b12f3af4f2b5c490f25c927a6e30f01bef28cd0e76e1f3dc04f2d206f2
[INFO] running `Command { std: "docker" "start" "-a" "e59c40b12f3af4f2b5c490f25c927a6e30f01bef28cd0e76e1f3dc04f2d206f2", kill_on_drop: false }`
[INFO] [stderr]    Compiling embedded-hal-async v1.0.0
[INFO] [stderr]    Compiling crc-catalog v2.4.0
[INFO] [stderr]    Compiling embedded-hal v1.0.0
[INFO] [stderr]    Compiling crc v3.3.0
[INFO] [stderr]    Compiling embedded-hal-aht2x 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:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(int_roundings)]
[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 `embedded-hal-aht2x` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "e59c40b12f3af4f2b5c490f25c927a6e30f01bef28cd0e76e1f3dc04f2d206f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e59c40b12f3af4f2b5c490f25c927a6e30f01bef28cd0e76e1f3dc04f2d206f2", kill_on_drop: false }`
[INFO] [stdout] e59c40b12f3af4f2b5c490f25c927a6e30f01bef28cd0e76e1f3dc04f2d206f2