[INFO] fetching crate set_timeout 0.1.4...
[INFO] testing set_timeout-0.1.4 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate set_timeout 0.1.4 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate set_timeout 0.1.4
[INFO] finished tweaking crates.io crate set_timeout 0.1.4
[INFO] tweaked toml for crates.io crate set_timeout 0.1.4 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate set_timeout 0.1.4 on toolchain beta-2025-09-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate set_timeout 0.1.4 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" "+beta-2025-09-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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" "+beta-2025-09-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a2860db7297d93dc8320e7bbfc3872a9dfb6411e82f5283469759e360a4403ae
[INFO] running `Command { std: "docker" "start" "-a" "a2860db7297d93dc8320e7bbfc3872a9dfb6411e82f5283469759e360a4403ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a2860db7297d93dc8320e7bbfc3872a9dfb6411e82f5283469759e360a4403ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a2860db7297d93dc8320e7bbfc3872a9dfb6411e82f5283469759e360a4403ae", kill_on_drop: false }`
[INFO] [stdout] a2860db7297d93dc8320e7bbfc3872a9dfb6411e82f5283469759e360a4403ae
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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" "+beta-2025-09-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9a13f8014cc88453115cb10f583efd7a04876d369a029801df4d58abd9203154
[INFO] running `Command { std: "docker" "start" "-a" "9a13f8014cc88453115cb10f583efd7a04876d369a029801df4d58abd9203154", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.40
[INFO] [stderr]    Compiling quote v1.0.20
[INFO] [stderr]    Compiling unicode-ident v1.0.1
[INFO] [stderr]    Compiling syn v1.0.98
[INFO] [stderr]    Compiling futures-core v0.3.24
[INFO] [stderr]    Compiling futures-task v0.3.24
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling futures-channel v0.3.24
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling futures-sink v0.3.24
[INFO] [stderr]    Compiling futures-util v0.3.24
[INFO] [stderr]    Compiling slab v0.4.6
[INFO] [stderr]    Compiling futures-io v0.3.24
[INFO] [stderr]    Compiling tokio v1.21.0
[INFO] [stderr]    Compiling once_cell v1.13.0
[INFO] [stderr]    Compiling socket2 v0.4.4
[INFO] [stderr]    Compiling futures-macro v0.3.24
[INFO] [stderr]    Compiling futures-executor v0.3.24
[INFO] [stderr]    Compiling futures v0.3.24
[INFO] [stderr]    Compiling set_timeout v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> src/lib.rs:50:1
[INFO] [stdout]    |
[INFO] [stdout] 50 | #![feature(map_first_last)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `map_first_last` has been stable since 1.66.0 and no longer requires an attribute to enable
[INFO] [stdout]   --> src/lib.rs:50:12
[INFO] [stdout]    |
[INFO] [stdout] 50 | #![feature(map_first_last)]
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `set_timeout` (lib) due to 1 previous error; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "9a13f8014cc88453115cb10f583efd7a04876d369a029801df4d58abd9203154", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9a13f8014cc88453115cb10f583efd7a04876d369a029801df4d58abd9203154", kill_on_drop: false }`
[INFO] [stdout] 9a13f8014cc88453115cb10f583efd7a04876d369a029801df4d58abd9203154