[INFO] fetching crate tank-core 0.2.0...
[INFO] testing tank-core-0.2.0 against 1.90.0 for beta-1.91-3
[INFO] extracting crate tank-core 0.2.0 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate tank-core 0.2.0
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate tank-core 0.2.0
[INFO] tweaked toml for crates.io crate tank-core 0.2.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate tank-core 0.2.0 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] crate crates.io crate tank-core 0.2.0 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" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 77b626bb798474838d0ee80bec70839a26d2c8baadb430d41ff36633bdd23621
[INFO] running `Command { std: "docker" "start" "-a" "77b626bb798474838d0ee80bec70839a26d2c8baadb430d41ff36633bdd23621", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "77b626bb798474838d0ee80bec70839a26d2c8baadb430d41ff36633bdd23621", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "77b626bb798474838d0ee80bec70839a26d2c8baadb430d41ff36633bdd23621", kill_on_drop: false }`
[INFO] [stdout] 77b626bb798474838d0ee80bec70839a26d2c8baadb430d41ff36633bdd23621
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2e15229c9742f2ce5d888dbde3cea09020243634caf80e0a82161ab6a94e24bf
[INFO] running `Command { std: "docker" "start" "-a" "2e15229c9742f2ce5d888dbde3cea09020243634caf80e0a82161ab6a94e24bf", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.101
[INFO] [stderr]    Compiling unicode-ident v1.0.19
[INFO] [stderr]    Compiling memchr v2.7.6
[INFO] [stderr]    Compiling futures-core v0.3.31
[INFO] [stderr]    Compiling libc v0.2.176
[INFO] [stderr]    Compiling object v0.37.3
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling gimli v0.32.3
[INFO] [stderr]    Compiling slab v0.4.11
[INFO] [stderr]    Compiling miniz_oxide v0.8.9
[INFO] [stderr]    Compiling anyhow v1.0.100
[INFO] [stderr]    Compiling time-core v0.1.6
[INFO] [stderr]    Compiling rust_decimal v1.38.0
[INFO] [stderr]    Compiling deranged v0.5.4
[INFO] [stderr]    Compiling tokio v1.47.1
[INFO] [stderr]    Compiling uuid v1.18.1
[INFO] [stderr]    Compiling log v0.4.28
[INFO] [stderr]    Compiling futures-channel v0.3.31
[INFO] [stderr]    Compiling time-macros v0.2.24
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]    Compiling time v0.3.44
[INFO] [stderr]    Compiling addr2line v0.25.1
[INFO] [stderr]    Compiling backtrace v0.3.76
[INFO] [stderr]    Compiling futures-macro v0.3.31
[INFO] [stderr]    Compiling async-stream-impl v0.3.6
[INFO] [stderr]    Compiling async-stream v0.3.6
[INFO] [stderr]    Compiling futures-util v0.3.31
[INFO] [stderr]    Compiling futures-executor v0.3.31
[INFO] [stderr]    Compiling futures v0.3.31
[INFO] [stderr]    Compiling tank-core v0.2.0 (/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(array_try_from_fn)]
[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 `tank-core` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "2e15229c9742f2ce5d888dbde3cea09020243634caf80e0a82161ab6a94e24bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2e15229c9742f2ce5d888dbde3cea09020243634caf80e0a82161ab6a94e24bf", kill_on_drop: false }`
[INFO] [stdout] 2e15229c9742f2ce5d888dbde3cea09020243634caf80e0a82161ab6a94e24bf