[INFO] fetching crate tree 0.4.1...
[INFO] testing tree-0.4.1 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate tree 0.4.1 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate tree 0.4.1
[INFO] finished tweaking crates.io crate tree 0.4.1
[INFO] tweaked toml for crates.io crate tree 0.4.1 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate tree 0.4.1 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] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 29 packages to latest compatible versions
[INFO] [stderr]       Adding compare v0.0.6 (available: v0.1.0)
[INFO] [stderr]       Adding quickcheck v0.2.27 (available: v1.0.3)
[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] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 86d1979f5c5eb6eb7816f97cb4d2d4006a4c6a316969c95861cde9c8ba697d34
[INFO] running `Command { std: "docker" "start" "-a" "86d1979f5c5eb6eb7816f97cb4d2d4006a4c6a316969c95861cde9c8ba697d34", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "86d1979f5c5eb6eb7816f97cb4d2d4006a4c6a316969c95861cde9c8ba697d34", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "86d1979f5c5eb6eb7816f97cb4d2d4006a4c6a316969c95861cde9c8ba697d34", kill_on_drop: false }`
[INFO] [stdout] 86d1979f5c5eb6eb7816f97cb4d2d4006a4c6a316969c95861cde9c8ba697d34
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] e97f22ea6b2a9e06d773a53333749b284b8a75ca1df313ece8c58d17d10ed6aa
[INFO] running `Command { std: "docker" "start" "-a" "e97f22ea6b2a9e06d773a53333749b284b8a75ca1df313ece8c58d17d10ed6aa", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr]    Compiling winapi-build v0.1.1
[INFO] [stderr]    Compiling winapi v0.2.8
[INFO] [stderr]    Compiling regex-syntax v0.3.9
[INFO] [stderr]    Compiling utf8-ranges v0.1.3
[INFO] [stderr]    Compiling memchr v0.1.11
[INFO] [stderr]    Compiling log v0.3.9
[INFO] [stderr]    Compiling bit-vec v0.6.3
[INFO] [stderr]    Compiling compare v0.0.6
[INFO] [stderr]    Compiling aho-corasick v0.5.3
[INFO] [stderr]    Compiling kernel32-sys v0.2.2
[INFO] [stderr]    Compiling bit-set v0.5.3
[INFO] [stderr]    Compiling ordered_iter v0.1.2
[INFO] [stderr]    Compiling thread-id v2.0.0
[INFO] [stderr]    Compiling thread_local v0.2.7
[INFO] [stderr]    Compiling regex v0.1.80
[INFO] [stderr]    Compiling env_logger v0.3.5
[INFO] [stderr]    Compiling quickcheck v0.2.27
[INFO] [stderr]    Compiling tree v0.4.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused macro definition: `bound`
[INFO] [stdout]    --> src/node/iter.rs:121:14
[INFO] [stdout]     |
[INFO] [stdout] 121 | macro_rules! bound {
[INFO] [stdout]     |              ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_macros)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/quickcheck.rs:14:29
[INFO] [stdout]    |
[INFO] [stdout] 14 |     fn shrink(&self) -> Box<Iterator<Item=Self>> {
[INFO] [stdout]    |                             ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 14 |     fn shrink(&self) -> Box<dyn Iterator<Item=Self>> {
[INFO] [stdout]    |                             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/quickcheck.rs:25:29
[INFO] [stdout]    |
[INFO] [stdout] 25 |     fn shrink(&self) -> Box<Iterator<Item=Self>> {
[INFO] [stdout]    |                             ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 25 |     fn shrink(&self) -> Box<dyn Iterator<Item=Self>> {
[INFO] [stdout]    |                             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0061]: this method takes 1 argument but 0 arguments were supplied
[INFO] [stdout]    --> src/set.rs:235:48
[INFO] [stdout]     |
[INFO] [stdout] 235 |     pub fn max(&self) -> Option<&T> { self.map.max().map(|e| e.0) }
[INFO] [stdout]     |                                                ^^^-- argument #1 of type `map::Map<T, (), C>` is missing
[INFO] [stdout]     |
[INFO] [stdout] note: method defined here
[INFO] [stdout]    --> /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/cmp.rs:1023:8
[INFO] [stdout] help: provide the argument
[INFO] [stdout]     |
[INFO] [stdout] 235 |     pub fn max(&self) -> Option<&T> { self.map.max(/* map::Map<T, (), C> */).map(|e| e.0) }
[INFO] [stdout]     |                                                    ++++++++++++++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `map` found for struct `map::Map<T, (), C>` in the current scope
[INFO] [stdout]    --> src/set.rs:235:54
[INFO] [stdout]     |
[INFO] [stdout] 235 |     pub fn max(&self) -> Option<&T> { self.map.max().map(|e| e.0) }
[INFO] [stdout]     |                                                      ^^^ `map::Map<T, (), C>` is not an iterator
[INFO] [stdout]     |
[INFO] [stdout] help: call `.into_iter()` first
[INFO] [stdout]     |
[INFO] [stdout] 235 |     pub fn max(&self) -> Option<&T> { self.map.max().into_iter().map(|e| e.0) }
[INFO] [stdout]     |                                                      ++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0061]: this method takes 1 argument but 0 arguments were supplied
[INFO] [stdout]    --> src/set.rs:291:48
[INFO] [stdout]     |
[INFO] [stdout] 291 |     pub fn min(&self) -> Option<&T> { self.map.min().map(|e| e.0) }
[INFO] [stdout]     |                                                ^^^-- argument #1 of type `map::Map<T, (), C>` is missing
[INFO] [stdout]     |
[INFO] [stdout] note: method defined here
[INFO] [stdout]    --> /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/cmp.rs:1062:8
[INFO] [stdout] help: provide the argument
[INFO] [stdout]     |
[INFO] [stdout] 291 |     pub fn min(&self) -> Option<&T> { self.map.min(/* map::Map<T, (), C> */).map(|e| e.0) }
[INFO] [stdout]     |                                                    ++++++++++++++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `map` found for struct `map::Map<T, (), C>` in the current scope
[INFO] [stdout]    --> src/set.rs:291:54
[INFO] [stdout]     |
[INFO] [stdout] 291 |     pub fn min(&self) -> Option<&T> { self.map.min().map(|e| e.0) }
[INFO] [stdout]     |                                                      ^^^ `map::Map<T, (), C>` is not an iterator
[INFO] [stdout]     |
[INFO] [stdout] help: call `.into_iter()` first
[INFO] [stdout]     |
[INFO] [stdout] 291 |     pub fn min(&self) -> Option<&T> { self.map.min().into_iter().map(|e| e.0) }
[INFO] [stdout]     |                                                      ++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `tree` (lib) due to 4 previous errors; 3 warnings emitted
[INFO] [stdout] Some errors have detailed explanations: E0061, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0061`.
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "e97f22ea6b2a9e06d773a53333749b284b8a75ca1df313ece8c58d17d10ed6aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e97f22ea6b2a9e06d773a53333749b284b8a75ca1df313ece8c58d17d10ed6aa", kill_on_drop: false }`
[INFO] [stdout] e97f22ea6b2a9e06d773a53333749b284b8a75ca1df313ece8c58d17d10ed6aa
