2026-06-16 11:10.03: New job: build topiary.0.2.3 (0f67d4873303)
2026-06-16 11:10.03: Waiting for resource in pool day11-builds
2026-06-16 11:28.42: Got resource from pool day11-builds
2026-06-16 11:28.42: [profile full] build topiary.0.2.3
2026-06-16 11:28.43: build topiary.0.2.3 (0f67d4873303)
=== DEPENDENCIES (1 transitive) ===
  conf-rust-2021.1                                   d64c9c4b2720
=== STDOUT ===
Processing: [default: loading data]
[topiary.0.2.3: dl]
[topiary.0.2.3: extract]
-> retrieved topiary.0.2.3  (https://opam.ocaml.org/cache)
[topiary: cargo build]
+ /usr/bin/cargo "build" "--release" "--package" "topiary-cli" (CWD=/home/opam/.opam/default/.opam-switch/build/topiary.0.2.3)
- error: package `serde_spanned v0.6.2` cannot be built because it requires rustc 1.64.0 or newer, while the currently active rustc version is 1.63.0
- Either upgrade to rustc 1.64.0 or newer, or use
- cargo update -p serde_spanned@0.6.2 --precise ver
- where `ver` is the latest version of `serde_spanned` supporting rustc 1.63.0
[ERROR] The compilation of topiary.0.2.3 failed at "cargo build --release --package topiary-cli".
build failed... 

=== STDERR ===

2026-06-16 11:30.56: FAILED: build topiary.0.2.3
2026-06-16 11:30.56: Job failed: build failed: topiary.0.2.3