[INFO] fetching crate zettel-core 0.2.0...
[INFO] testing zettel-core-0.2.0 against master#c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38 for pr-146098-8
[INFO] extracting crate zettel-core 0.2.0 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate zettel-core 0.2.0
[INFO] finished tweaking crates.io crate zettel-core 0.2.0
[INFO] tweaked toml for crates.io crate zettel-core 0.2.0 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate zettel-core 0.2.0 on toolchain c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate zettel-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" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a308791a58ffd793fe99eb6d0c5cb1ffcf36b4475f2fa701f4cc716653954a15
[INFO] running `Command { std: "docker" "start" "-a" "a308791a58ffd793fe99eb6d0c5cb1ffcf36b4475f2fa701f4cc716653954a15", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a308791a58ffd793fe99eb6d0c5cb1ffcf36b4475f2fa701f4cc716653954a15", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a308791a58ffd793fe99eb6d0c5cb1ffcf36b4475f2fa701f4cc716653954a15", kill_on_drop: false }`
[INFO] [stdout] a308791a58ffd793fe99eb6d0c5cb1ffcf36b4475f2fa701f4cc716653954a15
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bd197b1fbb6a88c83d3e5ec241e4ac99280fb2cb4ce96bd86a5c4df73b152626
[INFO] running `Command { std: "docker" "start" "-a" "bd197b1fbb6a88c83d3e5ec241e4ac99280fb2cb4ce96bd86a5c4df73b152626", kill_on_drop: false }`
[INFO] [stderr]    Compiling hashbrown v0.15.5
[INFO] [stderr]    Compiling regex-automata v0.4.9
[INFO] [stderr]    Compiling dirs-sys v0.4.1
[INFO] [stderr]    Compiling serde_derive v1.0.219
[INFO] [stderr]    Compiling thiserror-impl v1.0.69
[INFO] [stderr]    Compiling dirs v5.0.1
[INFO] [stderr]    Compiling indexmap v2.10.0
[INFO] [stderr]    Compiling thiserror v1.0.69
[INFO] [stderr]    Compiling regex v1.11.1
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]    Compiling toml_datetime v0.6.11
[INFO] [stderr]    Compiling serde_spanned v0.6.9
[INFO] [stderr]    Compiling toml_edit v0.22.27
[INFO] [stderr]    Compiling toml v0.8.23
[INFO] [stderr]    Compiling zettel-core v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 14.63s
[INFO] running `Command { std: "docker" "inspect" "bd197b1fbb6a88c83d3e5ec241e4ac99280fb2cb4ce96bd86a5c4df73b152626", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bd197b1fbb6a88c83d3e5ec241e4ac99280fb2cb4ce96bd86a5c4df73b152626", kill_on_drop: false }`
[INFO] [stdout] bd197b1fbb6a88c83d3e5ec241e4ac99280fb2cb4ce96bd86a5c4df73b152626
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d05c4a3ca2c844422715e7c0adb8077e0a2021bab1edd5f314df22c1fa0ceab9
[INFO] running `Command { std: "docker" "start" "-a" "d05c4a3ca2c844422715e7c0adb8077e0a2021bab1edd5f314df22c1fa0ceab9", kill_on_drop: false }`
[INFO] [stderr]    Compiling zettel-core v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0502]: cannot borrow `existing_ids` as mutable because it is also borrowed as immutable
[INFO] [stdout]    --> src/id.rs:813:9
[INFO] [stdout]     |
[INFO] [stdout] 801 |         let manager = IdManager::new(config, |id: &str| existing_ids.contains(id));
[INFO] [stdout]     |                                              ---------- ------------ first borrow occurs due to use of `existing_ids` in closure
[INFO] [stdout]     |                                              |
[INFO] [stdout]     |                                              immutable borrow occurs here
[INFO] [stdout] ...
[INFO] [stdout] 813 |         existing_ids.insert("1b".to_string());
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ mutable borrow occurs here
[INFO] [stdout] 814 |         existing_ids.insert("1c".to_string());
[INFO] [stdout] 815 |         let next_child = manager.next_available_child(&current);
[INFO] [stdout]     |                          ------- immutable borrow later used here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0502]: cannot borrow `existing_ids` as mutable because it is also borrowed as immutable
[INFO] [stdout]    --> src/id.rs:814:9
[INFO] [stdout]     |
[INFO] [stdout] 801 |         let manager = IdManager::new(config, |id: &str| existing_ids.contains(id));
[INFO] [stdout]     |                                              ---------- ------------ first borrow occurs due to use of `existing_ids` in closure
[INFO] [stdout]     |                                              |
[INFO] [stdout]     |                                              immutable borrow occurs here
[INFO] [stdout] ...
[INFO] [stdout] 814 |         existing_ids.insert("1c".to_string());
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ mutable borrow occurs here
[INFO] [stdout] 815 |         let next_child = manager.next_available_child(&current);
[INFO] [stdout]     |                          ------- immutable borrow later used here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0502`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `zettel-core` (lib test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "d05c4a3ca2c844422715e7c0adb8077e0a2021bab1edd5f314df22c1fa0ceab9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d05c4a3ca2c844422715e7c0adb8077e0a2021bab1edd5f314df22c1fa0ceab9", kill_on_drop: false }`
[INFO] [stdout] d05c4a3ca2c844422715e7c0adb8077e0a2021bab1edd5f314df22c1fa0ceab9