[INFO] fetching crate sigmah 0.6.1...
[INFO] testing sigmah-0.6.1 against 1.90.0 for beta-1.91-3
[INFO] extracting crate sigmah 0.6.1 into /workspace/builds/worker-0-tc1/source
[INFO] started tweaking crates.io crate sigmah 0.6.1
[INFO] finished tweaking crates.io crate sigmah 0.6.1
[INFO] tweaked toml for crates.io crate sigmah 0.6.1 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate sigmah 0.6.1 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 24 packages to latest compatible versions
[INFO] [stderr]       Adding multiversion v0.7.4 (available: v0.8.0)
[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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded crossbeam-deque v0.8.6
[INFO] [stderr]   Downloaded funty v2.0.0
[INFO] [stderr]   Downloaded tap v1.0.1
[INFO] [stderr]   Downloaded radium v0.7.0
[INFO] [stderr]   Downloaded multiversion-macros v0.7.4
[INFO] [stderr]   Downloaded target-features v0.1.6
[INFO] [stderr]   Downloaded multiversion v0.7.4
[INFO] [stderr]   Downloaded either v1.15.0
[INFO] [stderr]   Downloaded serde v1.0.228
[INFO] [stderr]   Downloaded wyz v0.5.1
[INFO] [stderr]   Downloaded serde-big-array v0.5.1
[INFO] [stderr]   Downloaded arrayvec v0.7.6
[INFO] [stderr]   Downloaded crossbeam-utils v0.8.21
[INFO] [stderr]   Downloaded serde_core v1.0.228
[INFO] [stderr]   Downloaded serde_derive v1.0.228
[INFO] [stderr]   Downloaded rayon-core v1.13.0
[INFO] [stderr]   Downloaded crossbeam-epoch v0.9.18
[INFO] [stderr]   Downloaded rayon v1.11.0
[INFO] [stderr]   Downloaded bitvec v1.0.1
[INFO] [stderr]   Downloaded syn v1.0.109
[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] 78d7bea2108818dc27737a3a32e910af12c3c3abbab91c65fbbb147dca8d9ec5
[INFO] running `Command { std: "docker" "start" "-a" "78d7bea2108818dc27737a3a32e910af12c3c3abbab91c65fbbb147dca8d9ec5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "78d7bea2108818dc27737a3a32e910af12c3c3abbab91c65fbbb147dca8d9ec5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "78d7bea2108818dc27737a3a32e910af12c3c3abbab91c65fbbb147dca8d9ec5", kill_on_drop: false }`
[INFO] [stdout] 78d7bea2108818dc27737a3a32e910af12c3c3abbab91c65fbbb147dca8d9ec5
[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] 301acd30272c9450a8d398fe42f3da55d35efbfb87f13da8344308110a0a1fca
[INFO] running `Command { std: "docker" "start" "-a" "301acd30272c9450a8d398fe42f3da55d35efbfb87f13da8344308110a0a1fca", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.101
[INFO] [stderr]    Compiling quote v1.0.41
[INFO] [stderr]    Compiling unicode-ident v1.0.19
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling target-features v0.1.6
[INFO] [stderr]    Compiling radium v0.7.0
[INFO] [stderr]    Compiling tap v1.0.1
[INFO] [stderr]    Compiling funty v2.0.0
[INFO] [stderr]    Compiling wyz v0.5.1
[INFO] [stderr]    Compiling bitvec v1.0.1
[INFO] [stderr]    Compiling multiversion-macros v0.7.4
[INFO] [stderr]    Compiling multiversion v0.7.4
[INFO] [stderr]    Compiling sigmah v0.6.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:6:1
[INFO] [stdout]   |
[INFO] [stdout] 6 | #![feature(generic_const_exprs)]
[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 `sigmah` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "301acd30272c9450a8d398fe42f3da55d35efbfb87f13da8344308110a0a1fca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "301acd30272c9450a8d398fe42f3da55d35efbfb87f13da8344308110a0a1fca", kill_on_drop: false }`
[INFO] [stdout] 301acd30272c9450a8d398fe42f3da55d35efbfb87f13da8344308110a0a1fca