[INFO] cloning repository https://github.com/snproj/string_tree
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/snproj/string_tree" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsnproj%2Fstring_tree", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsnproj%2Fstring_tree'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f0a8902cf861df2aac0a03f2e1ff0494f690cd46
[INFO] building snproj/string_tree against try#9b5e8b16bd1c4acf4cf8e6880368314cf021a987+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsnproj%2Fstring_tree" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/snproj/string_tree on toolchain 9b5e8b16bd1c4acf4cf8e6880368314cf021a987
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9b5e8b16bd1c4acf4cf8e6880368314cf021a987" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/snproj/string_tree
[INFO] finished tweaking git repo https://github.com/snproj/string_tree
[INFO] tweaked toml for git repo https://github.com/snproj/string_tree written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/snproj/string_tree 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" "+9b5e8b16bd1c4acf4cf8e6880368314cf021a987" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+9b5e8b16bd1c4acf4cf8e6880368314cf021a987" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9366a0e53849b8ba4a56636b7ebc2910dc3f400c7ba3cda2b4e2a6ba08ab22f7
[INFO] running `Command { std: "docker" "start" "-a" "9366a0e53849b8ba4a56636b7ebc2910dc3f400c7ba3cda2b4e2a6ba08ab22f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9366a0e53849b8ba4a56636b7ebc2910dc3f400c7ba3cda2b4e2a6ba08ab22f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9366a0e53849b8ba4a56636b7ebc2910dc3f400c7ba3cda2b4e2a6ba08ab22f7", kill_on_drop: false }`
[INFO] [stdout] 9366a0e53849b8ba4a56636b7ebc2910dc3f400c7ba3cda2b4e2a6ba08ab22f7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=forbid -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+9b5e8b16bd1c4acf4cf8e6880368314cf021a987" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f19c61bc3f3a7191aef44b6fb245bbdcda5e2edac74be8c934d782feac02a981
[INFO] running `Command { std: "docker" "start" "-a" "f19c61bc3f3a7191aef44b6fb245bbdcda5e2edac74be8c934d782feac02a981", kill_on_drop: false }`
[INFO] [stderr]    Compiling string_tree v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: a temporary value will be dropped here before the execution exits the block in Edition 2024, which will raise borrow checking error
[INFO] [stdout]    --> src/traverser.rs:185:29
[INFO] [stdout]     |
[INFO] [stdout] 182 | ...                   if let VSON::VSO(_, Some(thing), _) = &*self.store_ptr.clone().lock().unwrap() {
[INFO] [stdout]     |                                                               ---------------------- consider using a `let` binding to create a longer lived value; or replacing the `{ .. }` block with curly brackets `( .. )`; or folding the rest of the expression into the surrounding `unsafe { .. }`
[INFO] [stdout] ...
[INFO] [stdout] 185 | ...                   }
[INFO] [stdout]     |                       ^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2024
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2024/temporary-tail-expr-scope.html>
[INFO] [stdout]     = note: requested on the command line with `-D tail-expr-drop-order`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: a temporary value will be dropped here before the execution exits the block in Edition 2024, which will raise borrow checking error
[INFO] [stdout]    --> src/traverser.rs:211:29
[INFO] [stdout]     |
[INFO] [stdout] 208 | ...                   if let VSON::VSO(_, _, Some(thing)) = &*self.store_ptr.clone().lock().unwrap() {
[INFO] [stdout]     |                                                               ---------------------- consider using a `let` binding to create a longer lived value; or replacing the `{ .. }` block with curly brackets `( .. )`; or folding the rest of the expression into the surrounding `unsafe { .. }`
[INFO] [stdout] ...
[INFO] [stdout] 211 | ...                   }
[INFO] [stdout]     |                       ^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2024
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2024/temporary-tail-expr-scope.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `dict`
[INFO] [stdout]    --> src/word_actionator.rs:168:57
[INFO] [stdout]     |
[INFO] [stdout] 168 |     fn commence_action(&self, target: Arc<Mutex<VSON>>, dict: Arc<Mutex<T>>) -> Option<Arc<Mutex<WordActionResult>>>{
[INFO] [stdout]     |                                                         ^^^^ help: if this is intentional, prefix it with an underscore: `_dict`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `store` is never read
[INFO] [stdout]   --> src/traverser.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 8  | pub struct Traverser<T: TravDict, U: TravActionator<T>> {
[INFO] [stdout]    |            --------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 11 |     store: Arc<Mutex<VSON>>,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Traverser` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `pprint` is never used
[INFO] [stdout]   --> src/traverser.rs:55:12
[INFO] [stdout]    |
[INFO] [stdout] 18 | impl<T: TravDict, U: TravActionator<T>> Traverser<T, U> {
[INFO] [stdout]    | ------------------------------------------------------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 55 |     pub fn pprint(thing: &VSON, tab_count: usize) {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `pprint_store` and `pprint_store_ptr` are never used
[INFO] [stdout]    --> src/traverser.rs:121:12
[INFO] [stdout]     |
[INFO] [stdout] 120 | impl<T: TravDict, U: TravActionator<T>> Traverser<T, U> {
[INFO] [stdout]     | ------------------------------------------------------- methods in this implementation
[INFO] [stdout] 121 |     pub fn pprint_store(&self) {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 125 |     pub fn pprint_store_ptr(&self) {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `adverb` is never read
[INFO] [stdout]   --> src/word_actionator.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 9  | pub struct AdvLog {
[INFO] [stdout]    |            ------ field in this struct
[INFO] [stdout] 10 |     adverb: String,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `AdvLog` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `adjective` is never read
[INFO] [stdout]   --> src/word_actionator.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub struct AdjLog {
[INFO] [stdout]    |            ------ field in this struct
[INFO] [stdout] 15 |     adjective: String,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `AdjLog` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `is_indiv`, `links`, `verb`, and `adverbs` are never read
[INFO] [stdout]   --> src/word_actionator.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub struct VerbLog {
[INFO] [stdout]    |            ------- fields in this struct
[INFO] [stdout] 20 |     is_indiv: bool,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 21 |     links: Vec<Arc<Mutex<VerbLog>>>,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 22 |
[INFO] [stdout] 23 |     verb: Option<String>,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 24 |     adverbs: Vec<Arc<Mutex<AdvLog>>>,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `VerbLog` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `place`, `adjectives`, and `events` are never read
[INFO] [stdout]   --> src/word_actionator.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub struct PlaceLog {
[INFO] [stdout]    |            -------- fields in this struct
[INFO] [stdout] 29 |     place: String,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 30 |     adjectives: Vec<Arc<Mutex<AdjLog>>>,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 31 |     events: Vec<Arc<Mutex<EventLog>>>,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `PlaceLog` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `subj_actor`, `verb`, `obj_actor`, `time`, `place`, and `desc` are never read
[INFO] [stdout]   --> src/word_actionator.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 35 | pub struct EventLog {
[INFO] [stdout]    |            -------- fields in this struct
[INFO] [stdout] 36 |     subj_actor: ActorLog,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 37 |     verb: VerbLog,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 38 |     obj_actor: ActorLog,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 39 |
[INFO] [stdout] 40 |     time: TimeLog,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 41 |     place: PlaceLog,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 42 |
[INFO] [stdout] 43 |     desc: Option<String>,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `EventLog` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `time`, `events`, and `desc` are never read
[INFO] [stdout]   --> src/word_actionator.rs:48:5
[INFO] [stdout]    |
[INFO] [stdout] 47 | pub struct TimeLog {
[INFO] [stdout]    |            ------- fields in this struct
[INFO] [stdout] 48 |     time: i64,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 49 |     events: Vec<Arc<Mutex<EventLog>>>,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 50 |
[INFO] [stdout] 51 |     desc: Option<String>,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `TimeLog` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `is_indiv`, `links`, `actor`, and `adjectives` are never read
[INFO] [stdout]   --> src/word_actionator.rs:56:5
[INFO] [stdout]    |
[INFO] [stdout] 55 | pub struct ActorLog {
[INFO] [stdout]    |            -------- fields in this struct
[INFO] [stdout] 56 |     is_indiv: bool,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 57 |     links: Vec<Arc<Mutex<ActorLog>>>,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 58 |
[INFO] [stdout] 59 |     actor: Option<String>,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 60 |     adjectives: Vec<Arc<Mutex<AdjLog>>>,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ActorLog` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple fields are never read
[INFO] [stdout]   --> src/word_actionator.rs:65:5
[INFO] [stdout]    |
[INFO] [stdout] 64 | pub struct WordActionResult {
[INFO] [stdout]    |            ---------------- fields in this struct
[INFO] [stdout] 65 |     events: Vec<Arc<Mutex<EventLog>>>,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 66 |     actors: Vec<Arc<Mutex<ActorLog>>>,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 67 |     verbs: Vec<Arc<Mutex<VerbLog>>>,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 68 |     times: Vec<Arc<Mutex<TimeLog>>>,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 69 |     places: Vec<Arc<Mutex<PlaceLog>>>,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 70 |
[INFO] [stdout] 71 |     adjs: Vec<Arc<Mutex<AdjLog>>>,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 72 |     advs: Vec<Arc<Mutex<AdvLog>>>,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `WordActionResult` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `string_tree` (bin "string_tree") due to 2 previous errors; 12 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "f19c61bc3f3a7191aef44b6fb245bbdcda5e2edac74be8c934d782feac02a981", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f19c61bc3f3a7191aef44b6fb245bbdcda5e2edac74be8c934d782feac02a981", kill_on_drop: false }`
[INFO] [stdout] f19c61bc3f3a7191aef44b6fb245bbdcda5e2edac74be8c934d782feac02a981