[INFO] fetching crate n5-wasm 0.1.0...
[INFO] testing n5-wasm-0.1.0 against 1.60.0 for beta-1.61-1
[INFO] extracting crate n5-wasm 0.1.0 into /workspace/builds/worker-75/source
[INFO] validating manifest of crates.io crate n5-wasm 0.1.0 on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate n5-wasm 0.1.0
[INFO] finished tweaking crates.io crate n5-wasm 0.1.0
[INFO] tweaked toml for crates.io crate n5-wasm 0.1.0 written to /workspace/builds/worker-75/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded wasm-bindgen-futures v0.3.27
[INFO] [stderr]   Downloaded ndarray v0.12.1
[INFO] [stderr]   Downloaded itertools v0.7.11
[INFO] [stderr]   Downloaded rawpointer v0.1.0
[INFO] [stderr]   Downloaded matrixmultiply v0.1.15
[INFO] [stderr]   Downloaded n5 v0.3.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-75/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-75/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3c227f909b3e637a7496d7f14c5a65f0f532d98edeb1d6653aa79c266e504a28
[INFO] running `Command { std: "docker" "start" "-a" "3c227f909b3e637a7496d7f14c5a65f0f532d98edeb1d6653aa79c266e504a28", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3c227f909b3e637a7496d7f14c5a65f0f532d98edeb1d6653aa79c266e504a28", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3c227f909b3e637a7496d7f14c5a65f0f532d98edeb1d6653aa79c266e504a28", kill_on_drop: false }`
[INFO] [stdout] 3c227f909b3e637a7496d7f14c5a65f0f532d98edeb1d6653aa79c266e504a28
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-75/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-75/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" "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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2b9e9ba02e95f91fc97bed373fe7c3f7af9cf86cdaf2a23b39f0def88b2e5a12
[INFO] running `Command { std: "docker" "start" "-a" "2b9e9ba02e95f91fc97bed373fe7c3f7af9cf86cdaf2a23b39f0def88b2e5a12", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.37
[INFO] [stderr]    Compiling syn v1.0.91
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.80
[INFO] [stderr]    Compiling log v0.4.16
[INFO] [stderr]    Compiling bumpalo v3.9.1
[INFO] [stderr]    Compiling wasm-bindgen v0.2.80
[INFO] [stderr]    Compiling matrixmultiply v0.1.15
[INFO] [stderr]    Compiling crc32fast v1.3.2
[INFO] [stderr]    Compiling ndarray v0.12.1
[INFO] [stderr]    Compiling adler v1.0.2
[INFO] [stderr]    Compiling rawpointer v0.1.0
[INFO] [stderr]    Compiling futures v0.1.31
[INFO] [stderr]    Compiling byteorder v1.4.3
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling itertools v0.7.11
[INFO] [stderr]    Compiling itertools v0.8.2
[INFO] [stderr]    Compiling miniz_oxide v0.5.1
[INFO] [stderr]    Compiling flate2 v1.0.23
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.80
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.80
[INFO] [stderr]    Compiling serde_derive v1.0.136
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.80
[INFO] [stderr]    Compiling js-sys v0.3.57
[INFO] [stderr]    Compiling n5 v0.3.0
[INFO] [stderr]    Compiling web-sys v0.3.57
[INFO] [stderr]    Compiling wasm-bindgen-futures v0.3.27
[INFO] [stderr]    Compiling n5-wasm v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:210:34
[INFO] [stdout]     |
[INFO] [stdout] 210 |     fn get_version(&self) -> Box<Future<Item = n5::Version, Error = Error>>;
[INFO] [stdout]     |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[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/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 210 -     fn get_version(&self) -> Box<Future<Item = n5::Version, Error = Error>>;
[INFO] [stdout] 210 +     fn get_version(&self) -> Box<dyn Future<Item = n5::Version, Error = Error>>;
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:213:13
[INFO] [stdout]     |
[INFO] [stdout] 213 |         Box<Future<Item = n5::DatasetAttributes, Error = Error>>;
[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/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 213 -         Box<Future<Item = n5::DatasetAttributes, Error = Error>>;
[INFO] [stdout] 213 +         Box<dyn Future<Item = n5::DatasetAttributes, Error = Error>>;
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:215:46
[INFO] [stdout]     |
[INFO] [stdout] 215 |     fn exists(&self, path_name: &str) -> Box<Future<Item = bool, Error = Error>>;
[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/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 215 -     fn exists(&self, path_name: &str) -> Box<Future<Item = bool, Error = Error>>;
[INFO] [stdout] 215 +     fn exists(&self, path_name: &str) -> Box<dyn Future<Item = bool, Error = Error>>;
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:217:54
[INFO] [stdout]     |
[INFO] [stdout] 217 |     fn dataset_exists(&self, path_name: &str) -> Box<Future<Item = bool, Error = Error>> {
[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/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 217 -     fn dataset_exists(&self, path_name: &str) -> Box<Future<Item = bool, Error = Error>> {
[INFO] [stdout] 217 +     fn dataset_exists(&self, path_name: &str) -> Box<dyn Future<Item = bool, Error = Error>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:230:14
[INFO] [stdout]     |
[INFO] [stdout] 230 |     ) -> Box<Future<Item = Option<VecDataBlock<T>>, Error = Error>>
[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/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 230 -     ) -> Box<Future<Item = Option<VecDataBlock<T>>, Error = Error>>
[INFO] [stdout] 230 +     ) -> Box<dyn Future<Item = Option<VecDataBlock<T>>, Error = Error>>
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:235:44
[INFO] [stdout]     |
[INFO] [stdout] 235 |     fn list(&self, path_name: &str) -> Box<Future<Item = Vec<String>, Error = Error>>;
[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/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 235 -     fn list(&self, path_name: &str) -> Box<Future<Item = Vec<String>, Error = Error>>;
[INFO] [stdout] 235 +     fn list(&self, path_name: &str) -> Box<dyn Future<Item = Vec<String>, Error = Error>>;
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:237:55
[INFO] [stdout]     |
[INFO] [stdout] 237 |     fn list_attributes(&self, path_name: &str) -> Box<Future<Item = serde_json::Value, Error = Error>>;
[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/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 237 -     fn list_attributes(&self, path_name: &str) -> Box<Future<Item = serde_json::Value, Error = Error>>;
[INFO] [stdout] 237 +     fn list_attributes(&self, path_name: &str) -> Box<dyn Future<Item = serde_json::Value, Error = Error>>;
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:247:14
[INFO] [stdout]     |
[INFO] [stdout] 247 |     ) -> Box<Future<Item = Option<String>, Error = Error>>;
[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/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 247 -     ) -> Box<Future<Item = Option<String>, Error = Error>>;
[INFO] [stdout] 247 +     ) -> Box<dyn Future<Item = Option<String>, Error = Error>>;
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:254:14
[INFO] [stdout]     |
[INFO] [stdout] 254 |     ) -> Box<Future<Item = Option<(VecDataBlock<T>, Option<String>)>, Error = Error>>
[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/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 254 -     ) -> Box<Future<Item = Option<(VecDataBlock<T>, Option<String>)>, Error = Error>>
[INFO] [stdout] 254 +     ) -> Box<dyn Future<Item = Option<(VecDataBlock<T>, Option<String>)>, Error = Error>>
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/http_fetch.rs:146:34
[INFO] [stdout]     |
[INFO] [stdout] 146 |     fn get_version(&self) -> Box<Future<Item = n5::Version, Error = Error>> {
[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/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 146 -     fn get_version(&self) -> Box<Future<Item = n5::Version, Error = Error>> {
[INFO] [stdout] 146 +     fn get_version(&self) -> Box<dyn Future<Item = n5::Version, Error = Error>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/http_fetch.rs:159:17
[INFO] [stdout]     |
[INFO] [stdout] 159 |             Box<Future<Item = n5::DatasetAttributes, Error = Error>> {
[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/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 159 -             Box<Future<Item = n5::DatasetAttributes, Error = Error>> {
[INFO] [stdout] 159 +             Box<dyn Future<Item = n5::DatasetAttributes, Error = Error>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/http_fetch.rs:170:46
[INFO] [stdout]     |
[INFO] [stdout] 170 |     fn exists(&self, path_name: &str) -> Box<Future<Item = bool, Error = Error>> {
[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/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 170 -     fn exists(&self, path_name: &str) -> Box<Future<Item = bool, Error = Error>> {
[INFO] [stdout] 170 +     fn exists(&self, path_name: &str) -> Box<dyn Future<Item = bool, Error = Error>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/http_fetch.rs:186:14
[INFO] [stdout]     |
[INFO] [stdout] 186 |     ) -> Box<Future<Item = Option<VecDataBlock<T>>, Error = Error>>
[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/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 186 -     ) -> Box<Future<Item = Option<VecDataBlock<T>>, Error = Error>>
[INFO] [stdout] 186 +     ) -> Box<dyn Future<Item = Option<VecDataBlock<T>>, Error = Error>>
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/http_fetch.rs:196:45
[INFO] [stdout]     |
[INFO] [stdout] 196 |     fn list(&self, _path_name: &str) -> Box<Future<Item = Vec<String>, Error = Error>> {
[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/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 196 -     fn list(&self, _path_name: &str) -> Box<Future<Item = Vec<String>, Error = Error>> {
[INFO] [stdout] 196 +     fn list(&self, _path_name: &str) -> Box<dyn Future<Item = Vec<String>, Error = Error>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/http_fetch.rs:204:14
[INFO] [stdout]     |
[INFO] [stdout] 204 |     ) -> Box<Future<Item = serde_json::Value, Error = Error>> {
[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/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 204 -     ) -> Box<Future<Item = serde_json::Value, Error = Error>> {
[INFO] [stdout] 204 +     ) -> Box<dyn Future<Item = serde_json::Value, Error = Error>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/http_fetch.rs:216:14
[INFO] [stdout]     |
[INFO] [stdout] 216 |     ) -> Box<Future<Item = Option<String>, Error = Error>> {
[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/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 216 -     ) -> Box<Future<Item = Option<String>, Error = Error>> {
[INFO] [stdout] 216 +     ) -> Box<dyn Future<Item = Option<String>, Error = Error>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/http_fetch.rs:249:14
[INFO] [stdout]     |
[INFO] [stdout] 249 |     ) -> Box<Future<Item = Option<(VecDataBlock<T>, Option<String>)>, Error = Error>>
[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/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 249 -     ) -> Box<Future<Item = Option<(VecDataBlock<T>, Option<String>)>, Error = Error>>
[INFO] [stdout] 249 +     ) -> Box<dyn Future<Item = Option<(VecDataBlock<T>, Option<String>)>, Error = Error>>
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 17 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 17.09s
[INFO] running `Command { std: "docker" "inspect" "2b9e9ba02e95f91fc97bed373fe7c3f7af9cf86cdaf2a23b39f0def88b2e5a12", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2b9e9ba02e95f91fc97bed373fe7c3f7af9cf86cdaf2a23b39f0def88b2e5a12", kill_on_drop: false }`
[INFO] [stdout] 2b9e9ba02e95f91fc97bed373fe7c3f7af9cf86cdaf2a23b39f0def88b2e5a12
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-75/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-75/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" "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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 68b8ee25942427a2f64189d496b612b4f19c3b3bd9827c47b2005bc9c55f6a43
[INFO] running `Command { std: "docker" "start" "-a" "68b8ee25942427a2f64189d496b612b4f19c3b3bd9827c47b2005bc9c55f6a43", kill_on_drop: false }`
[INFO] [stderr]    Compiling n5-wasm v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:210:34
[INFO] [stdout]     |
[INFO] [stdout] 210 |     fn get_version(&self) -> Box<Future<Item = n5::Version, Error = Error>>;
[INFO] [stdout]     |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[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/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 210 -     fn get_version(&self) -> Box<Future<Item = n5::Version, Error = Error>>;
[INFO] [stdout] 210 +     fn get_version(&self) -> Box<dyn Future<Item = n5::Version, Error = Error>>;
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:213:13
[INFO] [stdout]     |
[INFO] [stdout] 213 |         Box<Future<Item = n5::DatasetAttributes, Error = Error>>;
[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/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 213 -         Box<Future<Item = n5::DatasetAttributes, Error = Error>>;
[INFO] [stdout] 213 +         Box<dyn Future<Item = n5::DatasetAttributes, Error = Error>>;
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:215:46
[INFO] [stdout]     |
[INFO] [stdout] 215 |     fn exists(&self, path_name: &str) -> Box<Future<Item = bool, Error = Error>>;
[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/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 215 -     fn exists(&self, path_name: &str) -> Box<Future<Item = bool, Error = Error>>;
[INFO] [stdout] 215 +     fn exists(&self, path_name: &str) -> Box<dyn Future<Item = bool, Error = Error>>;
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:217:54
[INFO] [stdout]     |
[INFO] [stdout] 217 |     fn dataset_exists(&self, path_name: &str) -> Box<Future<Item = bool, Error = Error>> {
[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/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 217 -     fn dataset_exists(&self, path_name: &str) -> Box<Future<Item = bool, Error = Error>> {
[INFO] [stdout] 217 +     fn dataset_exists(&self, path_name: &str) -> Box<dyn Future<Item = bool, Error = Error>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:230:14
[INFO] [stdout]     |
[INFO] [stdout] 230 |     ) -> Box<Future<Item = Option<VecDataBlock<T>>, Error = Error>>
[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/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 230 -     ) -> Box<Future<Item = Option<VecDataBlock<T>>, Error = Error>>
[INFO] [stdout] 230 +     ) -> Box<dyn Future<Item = Option<VecDataBlock<T>>, Error = Error>>
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:235:44
[INFO] [stdout]     |
[INFO] [stdout] 235 |     fn list(&self, path_name: &str) -> Box<Future<Item = Vec<String>, Error = Error>>;
[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/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 235 -     fn list(&self, path_name: &str) -> Box<Future<Item = Vec<String>, Error = Error>>;
[INFO] [stdout] 235 +     fn list(&self, path_name: &str) -> Box<dyn Future<Item = Vec<String>, Error = Error>>;
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:237:55
[INFO] [stdout]     |
[INFO] [stdout] 237 |     fn list_attributes(&self, path_name: &str) -> Box<Future<Item = serde_json::Value, Error = Error>>;
[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/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 237 -     fn list_attributes(&self, path_name: &str) -> Box<Future<Item = serde_json::Value, Error = Error>>;
[INFO] [stdout] 237 +     fn list_attributes(&self, path_name: &str) -> Box<dyn Future<Item = serde_json::Value, Error = Error>>;
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:247:14
[INFO] [stdout]     |
[INFO] [stdout] 247 |     ) -> Box<Future<Item = Option<String>, Error = Error>>;
[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/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 247 -     ) -> Box<Future<Item = Option<String>, Error = Error>>;
[INFO] [stdout] 247 +     ) -> Box<dyn Future<Item = Option<String>, Error = Error>>;
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:254:14
[INFO] [stdout]     |
[INFO] [stdout] 254 |     ) -> Box<Future<Item = Option<(VecDataBlock<T>, Option<String>)>, Error = Error>>
[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/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 254 -     ) -> Box<Future<Item = Option<(VecDataBlock<T>, Option<String>)>, Error = Error>>
[INFO] [stdout] 254 +     ) -> Box<dyn Future<Item = Option<(VecDataBlock<T>, Option<String>)>, Error = Error>>
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/http_fetch.rs:146:34
[INFO] [stdout]     |
[INFO] [stdout] 146 |     fn get_version(&self) -> Box<Future<Item = n5::Version, Error = Error>> {
[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/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 146 -     fn get_version(&self) -> Box<Future<Item = n5::Version, Error = Error>> {
[INFO] [stdout] 146 +     fn get_version(&self) -> Box<dyn Future<Item = n5::Version, Error = Error>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/http_fetch.rs:159:17
[INFO] [stdout]     |
[INFO] [stdout] 159 |             Box<Future<Item = n5::DatasetAttributes, Error = Error>> {
[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/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 159 -             Box<Future<Item = n5::DatasetAttributes, Error = Error>> {
[INFO] [stdout] 159 +             Box<dyn Future<Item = n5::DatasetAttributes, Error = Error>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/http_fetch.rs:170:46
[INFO] [stdout]     |
[INFO] [stdout] 170 |     fn exists(&self, path_name: &str) -> Box<Future<Item = bool, Error = Error>> {
[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/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 170 -     fn exists(&self, path_name: &str) -> Box<Future<Item = bool, Error = Error>> {
[INFO] [stdout] 170 +     fn exists(&self, path_name: &str) -> Box<dyn Future<Item = bool, Error = Error>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/http_fetch.rs:186:14
[INFO] [stdout]     |
[INFO] [stdout] 186 |     ) -> Box<Future<Item = Option<VecDataBlock<T>>, Error = Error>>
[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/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 186 -     ) -> Box<Future<Item = Option<VecDataBlock<T>>, Error = Error>>
[INFO] [stdout] 186 +     ) -> Box<dyn Future<Item = Option<VecDataBlock<T>>, Error = Error>>
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/http_fetch.rs:196:45
[INFO] [stdout]     |
[INFO] [stdout] 196 |     fn list(&self, _path_name: &str) -> Box<Future<Item = Vec<String>, Error = Error>> {
[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/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 196 -     fn list(&self, _path_name: &str) -> Box<Future<Item = Vec<String>, Error = Error>> {
[INFO] [stdout] 196 +     fn list(&self, _path_name: &str) -> Box<dyn Future<Item = Vec<String>, Error = Error>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/http_fetch.rs:204:14
[INFO] [stdout]     |
[INFO] [stdout] 204 |     ) -> Box<Future<Item = serde_json::Value, Error = Error>> {
[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/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 204 -     ) -> Box<Future<Item = serde_json::Value, Error = Error>> {
[INFO] [stdout] 204 +     ) -> Box<dyn Future<Item = serde_json::Value, Error = Error>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/http_fetch.rs:216:14
[INFO] [stdout]     |
[INFO] [stdout] 216 |     ) -> Box<Future<Item = Option<String>, Error = Error>> {
[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/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 216 -     ) -> Box<Future<Item = Option<String>, Error = Error>> {
[INFO] [stdout] 216 +     ) -> Box<dyn Future<Item = Option<String>, Error = Error>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/http_fetch.rs:249:14
[INFO] [stdout]     |
[INFO] [stdout] 249 |     ) -> Box<Future<Item = Option<(VecDataBlock<T>, Option<String>)>, Error = Error>>
[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/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 249 -     ) -> Box<Future<Item = Option<(VecDataBlock<T>, Option<String>)>, Error = Error>>
[INFO] [stdout] 249 +     ) -> Box<dyn Future<Item = Option<(VecDataBlock<T>, Option<String>)>, Error = Error>>
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 17 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.26s
[INFO] running `Command { std: "docker" "inspect" "68b8ee25942427a2f64189d496b612b4f19c3b3bd9827c47b2005bc9c55f6a43", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "68b8ee25942427a2f64189d496b612b4f19c3b3bd9827c47b2005bc9c55f6a43", kill_on_drop: false }`
[INFO] [stdout] 68b8ee25942427a2f64189d496b612b4f19c3b3bd9827c47b2005bc9c55f6a43
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-75/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-75/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" "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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 6d0469670108e95dfed45ca4524494b51a2a434b83f49489487842863d06f220
[INFO] running `Command { std: "docker" "start" "-a" "6d0469670108e95dfed45ca4524494b51a2a434b83f49489487842863d06f220", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:210:34
[INFO] [stderr]     |
[INFO] [stderr] 210 |     fn get_version(&self) -> Box<Future<Item = n5::Version, Error = Error>>;
[INFO] [stderr]     |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 210 -     fn get_version(&self) -> Box<Future<Item = n5::Version, Error = Error>>;
[INFO] [stderr] 210 +     fn get_version(&self) -> Box<dyn Future<Item = n5::Version, Error = Error>>;
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:213:13
[INFO] [stderr]     |
[INFO] [stderr] 213 |         Box<Future<Item = n5::DatasetAttributes, Error = Error>>;
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 213 -         Box<Future<Item = n5::DatasetAttributes, Error = Error>>;
[INFO] [stderr] 213 +         Box<dyn Future<Item = n5::DatasetAttributes, Error = Error>>;
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:215:46
[INFO] [stderr]     |
[INFO] [stderr] 215 |     fn exists(&self, path_name: &str) -> Box<Future<Item = bool, Error = Error>>;
[INFO] [stderr]     |                                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 215 -     fn exists(&self, path_name: &str) -> Box<Future<Item = bool, Error = Error>>;
[INFO] [stderr] 215 +     fn exists(&self, path_name: &str) -> Box<dyn Future<Item = bool, Error = Error>>;
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:217:54
[INFO] [stderr]     |
[INFO] [stderr] 217 |     fn dataset_exists(&self, path_name: &str) -> Box<Future<Item = bool, Error = Error>> {
[INFO] [stderr]     |                                                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 217 -     fn dataset_exists(&self, path_name: &str) -> Box<Future<Item = bool, Error = Error>> {
[INFO] [stderr] 217 +     fn dataset_exists(&self, path_name: &str) -> Box<dyn Future<Item = bool, Error = Error>> {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:230:14
[INFO] [stderr]     |
[INFO] [stderr] 230 |     ) -> Box<Future<Item = Option<VecDataBlock<T>>, Error = Error>>
[INFO] [stderr]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 230 -     ) -> Box<Future<Item = Option<VecDataBlock<T>>, Error = Error>>
[INFO] [stderr] 230 +     ) -> Box<dyn Future<Item = Option<VecDataBlock<T>>, Error = Error>>
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:235:44
[INFO] [stderr]     |
[INFO] [stderr] 235 |     fn list(&self, path_name: &str) -> Box<Future<Item = Vec<String>, Error = Error>>;
[INFO] [stderr]     |                                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 235 -     fn list(&self, path_name: &str) -> Box<Future<Item = Vec<String>, Error = Error>>;
[INFO] [stderr] 235 +     fn list(&self, path_name: &str) -> Box<dyn Future<Item = Vec<String>, Error = Error>>;
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:237:55
[INFO] [stderr]     |
[INFO] [stderr] 237 |     fn list_attributes(&self, path_name: &str) -> Box<Future<Item = serde_json::Value, Error = Error>>;
[INFO] [stderr]     |                                                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 237 -     fn list_attributes(&self, path_name: &str) -> Box<Future<Item = serde_json::Value, Error = Error>>;
[INFO] [stderr] 237 +     fn list_attributes(&self, path_name: &str) -> Box<dyn Future<Item = serde_json::Value, Error = Error>>;
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:247:14
[INFO] [stderr]     |
[INFO] [stderr] 247 |     ) -> Box<Future<Item = Option<String>, Error = Error>>;
[INFO] [stderr]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 247 -     ) -> Box<Future<Item = Option<String>, Error = Error>>;
[INFO] [stderr] 247 +     ) -> Box<dyn Future<Item = Option<String>, Error = Error>>;
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:254:14
[INFO] [stderr]     |
[INFO] [stderr] 254 |     ) -> Box<Future<Item = Option<(VecDataBlock<T>, Option<String>)>, Error = Error>>
[INFO] [stderr]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 254 -     ) -> Box<Future<Item = Option<(VecDataBlock<T>, Option<String>)>, Error = Error>>
[INFO] [stderr] 254 +     ) -> Box<dyn Future<Item = Option<(VecDataBlock<T>, Option<String>)>, Error = Error>>
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/http_fetch.rs:146:34
[INFO] [stderr]     |
[INFO] [stderr] 146 |     fn get_version(&self) -> Box<Future<Item = n5::Version, Error = Error>> {
[INFO] [stderr]     |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 146 -     fn get_version(&self) -> Box<Future<Item = n5::Version, Error = Error>> {
[INFO] [stderr] 146 +     fn get_version(&self) -> Box<dyn Future<Item = n5::Version, Error = Error>> {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/http_fetch.rs:159:17
[INFO] [stderr]     |
[INFO] [stderr] 159 |             Box<Future<Item = n5::DatasetAttributes, Error = Error>> {
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 159 -             Box<Future<Item = n5::DatasetAttributes, Error = Error>> {
[INFO] [stderr] 159 +             Box<dyn Future<Item = n5::DatasetAttributes, Error = Error>> {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/http_fetch.rs:170:46
[INFO] [stderr]     |
[INFO] [stderr] 170 |     fn exists(&self, path_name: &str) -> Box<Future<Item = bool, Error = Error>> {
[INFO] [stderr]     |                                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 170 -     fn exists(&self, path_name: &str) -> Box<Future<Item = bool, Error = Error>> {
[INFO] [stderr] 170 +     fn exists(&self, path_name: &str) -> Box<dyn Future<Item = bool, Error = Error>> {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/http_fetch.rs:186:14
[INFO] [stderr]     |
[INFO] [stderr] 186 |     ) -> Box<Future<Item = Option<VecDataBlock<T>>, Error = Error>>
[INFO] [stderr]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 186 -     ) -> Box<Future<Item = Option<VecDataBlock<T>>, Error = Error>>
[INFO] [stderr] 186 +     ) -> Box<dyn Future<Item = Option<VecDataBlock<T>>, Error = Error>>
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/http_fetch.rs:196:45
[INFO] [stderr]     |
[INFO] [stderr] 196 |     fn list(&self, _path_name: &str) -> Box<Future<Item = Vec<String>, Error = Error>> {
[INFO] [stderr]     |                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 196 -     fn list(&self, _path_name: &str) -> Box<Future<Item = Vec<String>, Error = Error>> {
[INFO] [stderr] 196 +     fn list(&self, _path_name: &str) -> Box<dyn Future<Item = Vec<String>, Error = Error>> {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/http_fetch.rs:204:14
[INFO] [stderr]     |
[INFO] [stderr] 204 |     ) -> Box<Future<Item = serde_json::Value, Error = Error>> {
[INFO] [stderr]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 204 -     ) -> Box<Future<Item = serde_json::Value, Error = Error>> {
[INFO] [stderr] 204 +     ) -> Box<dyn Future<Item = serde_json::Value, Error = Error>> {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/http_fetch.rs:216:14
[INFO] [stderr]     |
[INFO] [stderr] 216 |     ) -> Box<Future<Item = Option<String>, Error = Error>> {
[INFO] [stderr]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 216 -     ) -> Box<Future<Item = Option<String>, Error = Error>> {
[INFO] [stderr] 216 +     ) -> Box<dyn Future<Item = Option<String>, Error = Error>> {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/http_fetch.rs:249:14
[INFO] [stderr]     |
[INFO] [stderr] 249 |     ) -> Box<Future<Item = Option<(VecDataBlock<T>, Option<String>)>, Error = Error>>
[INFO] [stderr]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 249 -     ) -> Box<Future<Item = Option<(VecDataBlock<T>, Option<String>)>, Error = Error>>
[INFO] [stderr] 249 +     ) -> Box<dyn Future<Item = Option<(VecDataBlock<T>, Option<String>)>, Error = Error>>
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: `n5-wasm` (lib test) generated 17 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.30s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/n5_wasm-ce7cdc92569d5c01)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "6d0469670108e95dfed45ca4524494b51a2a434b83f49489487842863d06f220", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6d0469670108e95dfed45ca4524494b51a2a434b83f49489487842863d06f220", kill_on_drop: false }`
[INFO] [stdout] 6d0469670108e95dfed45ca4524494b51a2a434b83f49489487842863d06f220