[INFO] crate ss-trees 0.1.1 is already in cache
[INFO] testing ss-trees-0.1.1 against 1.44.0 for beta-1.45-1
[INFO] extracting crate ss-trees 0.1.1 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate ss-trees 0.1.1 on toolchain 1.44.0
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate ss-trees 0.1.1
[INFO] finished tweaking crates.io crate ss-trees 0.1.1
[INFO] tweaked toml for crates.io crate ss-trees 0.1.1 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.44.0" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] ba04ad1f05619a2139b623112f7c45566ccbfd16eb64b9ee64f0dfda5e5739fe
[INFO] running `"docker" "start" "-a" "ba04ad1f05619a2139b623112f7c45566ccbfd16eb64b9ee64f0dfda5e5739fe"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.63
[INFO] [stderr]    Compiling bumpalo v3.4.0
[INFO] [stderr]    Compiling scopeguard v0.3.3
[INFO] [stderr]    Compiling wasm-bindgen v0.2.63
[INFO] [stderr]    Compiling parking_lot_core v0.4.0
[INFO] [stderr]    Compiling itertools v0.8.2
[INFO] [stderr]    Compiling serde_json v1.0.53
[INFO] [stderr]    Compiling lock_api v0.1.5
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.63
[INFO] [stderr]    Compiling parking_lot v0.7.1
[INFO] [stderr]    Compiling once_cell v0.1.8
[INFO] [stderr]    Compiling cached v0.8.1
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.63
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.63
[INFO] [stderr]    Compiling js-sys v0.3.40
[INFO] [stderr]    Compiling web-sys v0.3.40
[INFO] [stderr]    Compiling ss-web-utils v0.1.1
[INFO] [stderr]    Compiling ss-trees v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stderr]  --> src/lib.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | #![feature(vec_remove_item)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/tree.rs:65:11
[INFO] [stderr]    |
[INFO] [stderr] 65 |     api: &TreeApi<M, SN, SL, IN, IL>,
[INFO] [stderr]    |           ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn TreeApi<M, SN, SL, IN, IL>`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/tree.rs:177:34
[INFO] [stderr]     |
[INFO] [stderr] 177 |     pub fn get_meta(&self, api: &TreeApi<M, SN, SL, IN, IL>) -> M {
[INFO] [stderr]     |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn TreeApi<M, SN, SL, IN, IL>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/tree.rs:245:23
[INFO] [stderr]     |
[INFO] [stderr] 245 |     pub fn from(api: &TreeApi<M, SN, SL, IN, IL>, parent: &M, new: ITree<IN, IL>) -> Self {
[INFO] [stderr]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn TreeApi<M, SN, SL, IN, IL>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/tree.rs:269:35
[INFO] [stderr]     |
[INFO] [stderr] 269 |     pub fn unchanged(&self, api: &TreeApi<M, SN, SL, IN, IL>, other: &ITree<IN, IL>) -> bool {
[INFO] [stderr]     |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn TreeApi<M, SN, SL, IN, IL>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/tree.rs:276:36
[INFO] [stderr]     |
[INFO] [stderr] 276 |     pub fn recyclable(&self, api: &TreeApi<M, SN, SL, IN, IL>, other: &ITree<IN, IL>) -> bool {
[INFO] [stderr]     |                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn TreeApi<M, SN, SL, IN, IL>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/tree.rs:283:34
[INFO] [stderr]     |
[INFO] [stderr] 283 |     pub fn sync(&mut self, api: &TreeApi<M, SN, SL, IN, IL>, parent: &M, new: ITree<IN, IL>) {
[INFO] [stderr]     |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn TreeApi<M, SN, SL, IN, IL>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/tree.rs:328:35
[INFO] [stderr]     |
[INFO] [stderr] 328 |     pub fn unchanged(&self, api: &TreeApi<M, SN, SL, IN, IL>, other: &ILeaf<IL>) -> bool {
[INFO] [stderr]     |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn TreeApi<M, SN, SL, IN, IL>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/tree.rs:331:36
[INFO] [stderr]     |
[INFO] [stderr] 331 |     pub fn recyclable(&self, api: &TreeApi<M, SN, SL, IN, IL>, other: &ILeaf<IL>) -> bool {
[INFO] [stderr]     |                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn TreeApi<M, SN, SL, IN, IL>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/tree.rs:334:34
[INFO] [stderr]     |
[INFO] [stderr] 334 |     pub fn sync(&mut self, api: &TreeApi<M, SN, SL, IN, IL>, parent: &M, new: ILeaf<IL>) {
[INFO] [stderr]     |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn TreeApi<M, SN, SL, IN, IL>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/tree.rs:354:35
[INFO] [stderr]     |
[INFO] [stderr] 354 |     pub fn unchanged(&self, api: &TreeApi<M, SN, SL, IN, IL>, other: &INode<IN, IL>) -> bool {
[INFO] [stderr]     |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn TreeApi<M, SN, SL, IN, IL>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/tree.rs:357:36
[INFO] [stderr]     |
[INFO] [stderr] 357 |     pub fn recyclable(&self, api: &TreeApi<M, SN, SL, IN, IL>, other: &INode<IN, IL>) -> bool {
[INFO] [stderr]     |                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn TreeApi<M, SN, SL, IN, IL>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/tree.rs:360:34
[INFO] [stderr]     |
[INFO] [stderr] 360 |     pub fn sync(&mut self, api: &TreeApi<M, SN, SL, IN, IL>, parent: &M, new: INode<IN, IL>) {
[INFO] [stderr]     |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn TreeApi<M, SN, SL, IN, IL>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/tree.rs:454:35
[INFO] [stderr]     |
[INFO] [stderr] 454 |     pub fn unchanged(&self, api: &TreeApi<M, SN, SL, IN, IL>, other: &IChildren<IN, IL>) -> bool {
[INFO] [stderr]     |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn TreeApi<M, SN, SL, IN, IL>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/tree.rs:464:36
[INFO] [stderr]     |
[INFO] [stderr] 464 |     pub fn recyclable(&self, api: &TreeApi<M, SN, SL, IN, IL>, other: &IChildren<IN, IL>) -> bool {
[INFO] [stderr]     |                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn TreeApi<M, SN, SL, IN, IL>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/tree.rs:474:34
[INFO] [stderr]     |
[INFO] [stderr] 474 |     pub fn sync(&mut self, api: &TreeApi<M, SN, SL, IN, IL>, parent: &M, new: IChildren<IN, IL>) {
[INFO] [stderr]     |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn TreeApi<M, SN, SL, IN, IL>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/tree.rs:701:45
[INFO] [stderr]     |
[INFO] [stderr] 701 | pub fn create_tree<M, SN, SL, IN, IL>(api: &TreeApi<M, SN, SL, IN, IL>, parent: &M, new: ITree<IN, IL>) -> STree<M, SN, SL, IN, IL>
[INFO] [stderr]     |                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn TreeApi<M, SN, SL, IN, IL>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/map.rs:62:75
[INFO] [stderr]    |
[INFO] [stderr] 62 |     pub fn unchanged<N, V1: PartialEq>(&self, values: &IMap<K, V1>, api: &IMapLogic<N, K, V1, V2>) -> bool {
[INFO] [stderr]    |                                                                           ^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn IMapLogic<N, K, V1, V2>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/map.rs:89:87
[INFO] [stderr]    |
[INFO] [stderr] 89 |     pub fn sync<N, V1: PartialEq>(&mut self, attached: &N, values: IMap<K, V1>, api: &IMapLogic<N, K, V1, V2>) {
[INFO] [stderr]    |                                                                                       ^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn IMapLogic<N, K, V1, V2>`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error; 18 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: could not compile `ss-trees`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "ba04ad1f05619a2139b623112f7c45566ccbfd16eb64b9ee64f0dfda5e5739fe"`
[INFO] running `"docker" "rm" "-f" "ba04ad1f05619a2139b623112f7c45566ccbfd16eb64b9ee64f0dfda5e5739fe"`
[INFO] [stdout] ba04ad1f05619a2139b623112f7c45566ccbfd16eb64b9ee64f0dfda5e5739fe