[INFO] cloning repository https://github.com/unixpickle/squidtun
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/unixpickle/squidtun" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Funixpickle%2Fsquidtun", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Funixpickle%2Fsquidtun'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 69c8b05b86b62f30c7c396667c126132a15ab235
[INFO] testing unixpickle/squidtun against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Funixpickle%2Fsquidtun" "/workspace/builds/worker-66/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-66/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/unixpickle/squidtun 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 git repo https://github.com/unixpickle/squidtun
[INFO] finished tweaking git repo https://github.com/unixpickle/squidtun
[INFO] tweaked toml for git repo https://github.com/unixpickle/squidtun written to /workspace/builds/worker-66/source/Cargo.toml
[INFO] crate git repo https://github.com/unixpickle/squidtun already has a lockfile, it will not be regenerated
[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 simple_logger v0.5.0
[INFO] [stderr]   Downloaded tokio-core v0.1.16
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-66/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-66/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] 723c407bc52038de3921131d0b94ce22fc1f34b90951abb3e220542a73cd8554
[INFO] running `Command { std: "docker" "start" "-a" "723c407bc52038de3921131d0b94ce22fc1f34b90951abb3e220542a73cd8554", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "723c407bc52038de3921131d0b94ce22fc1f34b90951abb3e220542a73cd8554", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "723c407bc52038de3921131d0b94ce22fc1f34b90951abb3e220542a73cd8554", kill_on_drop: false }`
[INFO] [stdout] 723c407bc52038de3921131d0b94ce22fc1f34b90951abb3e220542a73cd8554
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-66/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-66/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] 3b379a03add2dad38d5c0c26e6ead9f9b8a848ecd7756d9c75e23d282363c388
[INFO] running `Command { std: "docker" "start" "-a" "3b379a03add2dad38d5c0c26e6ead9f9b8a848ecd7756d9c75e23d282363c388", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.40
[INFO] [stderr]    Compiling cfg-if v0.1.2
[INFO] [stderr]    Compiling futures v0.1.21
[INFO] [stderr]    Compiling byteorder v1.2.2
[INFO] [stderr]    Compiling lazycell v0.6.0
[INFO] [stderr]    Compiling nodrop v0.1.12
[INFO] [stderr]    Compiling slab v0.4.0
[INFO] [stderr]    Compiling lazy_static v1.0.0
[INFO] [stderr]    Compiling version_check v0.1.3
[INFO] [stderr]    Compiling scoped-tls v0.1.1
[INFO] [stderr]    Compiling slab v0.3.0
[INFO] [stderr]    Compiling unicode-width v0.1.4
[INFO] [stderr]    Compiling take v0.1.0
[INFO] [stderr]    Compiling safemem v0.2.0
[INFO] [stderr]    Compiling smallvec v0.2.1
[INFO] [stderr]    Compiling bitflags v1.0.1
[INFO] [stderr]    Compiling language-tags v0.2.2
[INFO] [stderr]    Compiling httparse v1.2.4
[INFO] [stderr]    Compiling ansi_term v0.11.0
[INFO] [stderr]    Compiling strsim v0.7.0
[INFO] [stderr]    Compiling vec_map v0.8.0
[INFO] [stderr]    Compiling sha1 v0.6.0
[INFO] [stderr]    Compiling log v0.4.1
[INFO] [stderr]    Compiling crossbeam-utils v0.3.2
[INFO] [stderr]    Compiling crossbeam-utils v0.2.2
[INFO] [stderr]    Compiling textwrap v0.9.0
[INFO] [stderr]    Compiling base64 v0.9.0
[INFO] [stderr]    Compiling arrayvec v0.4.7
[INFO] [stderr]    Compiling log v0.3.9
[INFO] [stderr]    Compiling unicase v2.1.0
[INFO] [stderr]    Compiling iovec v0.1.2
[INFO] [stderr]    Compiling net2 v0.2.32
[INFO] [stderr]    Compiling rand v0.4.2
[INFO] [stderr]    Compiling num_cpus v1.8.0
[INFO] [stderr]    Compiling time v0.1.39
[INFO] [stderr]    Compiling atty v0.2.8
[INFO] [stderr]    Compiling crossbeam-epoch v0.4.1
[INFO] [stderr]    Compiling tokio-executor v0.1.2
[INFO] [stderr]    Compiling tokio-service v0.1.0
[INFO] [stderr]    Compiling relay v0.1.1
[INFO] [stderr]    Compiling mime v0.3.5
[INFO] [stderr]    Compiling clap v2.31.2
[INFO] [stderr]    Compiling bytes v0.4.6
[INFO] [stderr]    Compiling mio v0.6.14
[INFO] [stderr]    Compiling futures-cpupool v0.1.8
[INFO] [stderr]    Compiling rand v0.3.22
[INFO] [stderr]    Compiling simple_logger v0.5.0
[INFO] [stderr]    Compiling crossbeam-deque v0.3.0
[INFO] [stderr]    Compiling tokio-timer v0.2.1
[INFO] [stderr]    Compiling tokio-threadpool v0.1.2
[INFO] [stderr]    Compiling tokio-io v0.1.6
[INFO] [stderr]    Compiling tokio-reactor v0.1.1
[INFO] [stderr]    Compiling tokio-tcp v0.1.0
[INFO] [stderr]    Compiling tokio-udp v0.1.0
[INFO] [stderr]    Compiling tokio v0.1.5
[INFO] [stderr]    Compiling tokio-core v0.1.16
[INFO] [stderr]    Compiling tokio-proto v0.1.1
[INFO] [stderr]    Compiling hyper v0.11.25
[INFO] [stderr]    Compiling squidtun v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/server/main.rs:66:10
[INFO] [stdout]    |
[INFO] [stdout] 66 | ) -> Box<Future<Item = (), 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] 66 - ) -> Box<Future<Item = (), Error = ()>> {
[INFO] [stdout] 66 + ) -> Box<dyn Future<Item = (), Error = ()>> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/server/session.rs:34:14
[INFO] [stdout]    |
[INFO] [stdout] 34 |     ) -> Box<Future<Item = Session, Error = io::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] 34 -     ) -> Box<Future<Item = Session, Error = io::Error>> {
[INFO] [stdout] 34 +     ) -> Box<dyn Future<Item = Session, Error = io::Error>> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/server/server.rs:37:43
[INFO] [stdout]    |
[INFO] [stdout] 37 |     fn connect(&self, proof: &str) -> Box<Future<Item = Vec<u8>, Error = String>> {
[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] 37 -     fn connect(&self, proof: &str) -> Box<Future<Item = Vec<u8>, Error = String>> {
[INFO] [stdout] 37 +     fn connect(&self, proof: &str) -> Box<dyn Future<Item = Vec<u8>, Error = String>> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/server/server.rs:57:55
[INFO] [stdout]    |
[INFO] [stdout] 57 |     fn upload(&self, req: Request, id: String) -> Box<Future<Item = Vec<u8>, Error = String>> {
[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] 57 -     fn upload(&self, req: Request, id: String) -> Box<Future<Item = Vec<u8>, Error = String>> {
[INFO] [stdout] 57 +     fn upload(&self, req: Request, id: String) -> Box<dyn Future<Item = Vec<u8>, Error = String>> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/server/server.rs:76:41
[INFO] [stdout]    |
[INFO] [stdout] 76 |     fn download(&self, id: &str) -> Box<Future<Item = Vec<u8>, Error = String>> {
[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] 76 -     fn download(&self, id: &str) -> Box<Future<Item = Vec<u8>, Error = String>> {
[INFO] [stdout] 76 +     fn download(&self, id: &str) -> Box<dyn Future<Item = Vec<u8>, Error = String>> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/server/server.rs:94:38
[INFO] [stdout]    |
[INFO] [stdout] 94 |     fn close(&self, id: &str) -> Box<Future<Item = Vec<u8>, Error = String>> {
[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] 94 -     fn close(&self, id: &str) -> Box<Future<Item = Vec<u8>, Error = String>> {
[INFO] [stdout] 94 +     fn close(&self, id: &str) -> Box<dyn Future<Item = Vec<u8>, Error = String>> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/server/server.rs:102:30
[INFO] [stdout]     |
[INFO] [stdout] 102 |     fn invalid(&self) -> Box<Future<Item = Vec<u8>, Error = String>> {
[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] 102 -     fn invalid(&self) -> Box<Future<Item = Vec<u8>, Error = String>> {
[INFO] [stdout] 102 +     fn invalid(&self) -> Box<dyn Future<Item = Vec<u8>, Error = String>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/server/server.rs:110:14
[INFO] [stdout]     |
[INFO] [stdout] 110 |     ) -> Box<Future<Item = R, Error = String>> where F: FnOnce(&mut Session) -> R {
[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] 110 -     ) -> Box<Future<Item = R, Error = String>> where F: FnOnce(&mut Session) -> R {
[INFO] [stdout] 110 +     ) -> Box<dyn Future<Item = R, Error = String>> where F: FnOnce(&mut Session) -> R {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/server/server.rs:130:23
[INFO] [stdout]     |
[INFO] [stdout] 130 |     type Future = Box<Future<Item = Self::Response, Error = Self::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] 130 -     type Future = Box<Future<Item = Self::Response, Error = Self::Error>>;
[INFO] [stdout] 130 +     type Future = Box<dyn Future<Item = Self::Response, Error = Self::Error>>;
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/client/main.rs:102:10
[INFO] [stdout]     |
[INFO] [stdout] 102 | ) -> Box<Future<Item = (), Error = String>> {
[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] 102 - ) -> Box<Future<Item = (), Error = String>> {
[INFO] [stdout] 102 + ) -> Box<dyn Future<Item = (), Error = String>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/client/main.rs:126:10
[INFO] [stdout]     |
[INFO] [stdout] 126 | ) -> Box<Future<Item = String, Error = String>> {
[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] 126 - ) -> Box<Future<Item = String, Error = String>> {
[INFO] [stdout] 126 + ) -> Box<dyn Future<Item = String, Error = String>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/client/main.rs:134:59
[INFO] [stdout]     |
[INFO] [stdout] 134 | fn upload_chunk(info: SessionInfo, chunk: Vec<u8>) -> Box<Future<Item = (), Error = String>> {
[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] 134 - fn upload_chunk(info: SessionInfo, chunk: Vec<u8>) -> Box<Future<Item = (), Error = String>> {
[INFO] [stdout] 134 + fn upload_chunk(info: SessionInfo, chunk: Vec<u8>) -> Box<dyn Future<Item = (), Error = String>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/client/main.rs:154:40
[INFO] [stdout]     |
[INFO] [stdout] 154 | fn send_eof(info: &SessionInfo) -> Box<Future<Item = (), Error = String>> {
[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] 154 - fn send_eof(info: &SessionInfo) -> Box<Future<Item = (), Error = String>> {
[INFO] [stdout] 154 + fn send_eof(info: &SessionInfo) -> Box<dyn Future<Item = (), Error = String>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/client/main.rs:159:47
[INFO] [stdout]     |
[INFO] [stdout] 159 | fn download_stream(info: &SessionInfo) -> Box<Stream<Item = Vec<u8>, Error = String>> {
[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 - fn download_stream(info: &SessionInfo) -> Box<Stream<Item = Vec<u8>, Error = String>> {
[INFO] [stdout] 159 + fn download_stream(info: &SessionInfo) -> Box<dyn Stream<Item = Vec<u8>, Error = String>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/client/main.rs:186:10
[INFO] [stdout]     |
[INFO] [stdout] 186 | ) -> Box<Future<Item = Vec<u8>, Error = String>> {
[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 = Vec<u8>, Error = String>> {
[INFO] [stdout] 186 + ) -> Box<dyn Future<Item = Vec<u8>, Error = String>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/server/server.rs:179:38
[INFO] [stdout]     |
[INFO] [stdout] 179 |         let prefixes: Vec<(&str, Box<Fn(String) -> RequestInfo>)> = vec![
[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] 179 -         let prefixes: Vec<(&str, Box<Fn(String) -> RequestInfo>)> = vec![
[INFO] [stdout] 179 +         let prefixes: Vec<(&str, Box<dyn Fn(String) -> RequestInfo>)> = vec![
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/client/main.rs:108:30
[INFO] [stdout]     |
[INFO] [stdout] 108 |         let read_future: Box<Future<Item = (), Error = String>> = Box::new(
[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] 108 -         let read_future: Box<Future<Item = (), Error = String>> = Box::new(
[INFO] [stdout] 108 +         let read_future: Box<dyn Future<Item = (), Error = String>> = Box::new(
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/client/main.rs:113:31
[INFO] [stdout]     |
[INFO] [stdout] 113 |         let write_future: Box<Future<Item = (), Error = String>> = Box::new(
[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] 113 -         let write_future: Box<Future<Item = (), Error = String>> = Box::new(
[INFO] [stdout] 113 +         let write_future: Box<dyn Future<Item = (), Error = String>> = Box::new(
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 59.36s
[INFO] running `Command { std: "docker" "inspect" "3b379a03add2dad38d5c0c26e6ead9f9b8a848ecd7756d9c75e23d282363c388", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3b379a03add2dad38d5c0c26e6ead9f9b8a848ecd7756d9c75e23d282363c388", kill_on_drop: false }`
[INFO] [stdout] 3b379a03add2dad38d5c0c26e6ead9f9b8a848ecd7756d9c75e23d282363c388
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-66/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-66/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] 8a56a7d95c526f731fcddb860b03c0152900e2d4a51b3870c5a853ff78222dd2
[INFO] running `Command { std: "docker" "start" "-a" "8a56a7d95c526f731fcddb860b03c0152900e2d4a51b3870c5a853ff78222dd2", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling squidtun v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/client/main.rs:102:10
[INFO] [stdout]     |
[INFO] [stdout] 102 | ) -> Box<Future<Item = (), Error = String>> {
[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] 102 - ) -> Box<Future<Item = (), Error = String>> {
[INFO] [stdout] 102 + ) -> Box<dyn Future<Item = (), Error = String>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/client/main.rs:126:10
[INFO] [stdout]     |
[INFO] [stdout] 126 | ) -> Box<Future<Item = String, Error = String>> {
[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] 126 - ) -> Box<Future<Item = String, Error = String>> {
[INFO] [stdout] 126 + ) -> Box<dyn Future<Item = String, Error = String>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/client/main.rs:134:59
[INFO] [stdout]     |
[INFO] [stdout] 134 | fn upload_chunk(info: SessionInfo, chunk: Vec<u8>) -> Box<Future<Item = (), Error = String>> {
[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] 134 - fn upload_chunk(info: SessionInfo, chunk: Vec<u8>) -> Box<Future<Item = (), Error = String>> {
[INFO] [stdout] 134 + fn upload_chunk(info: SessionInfo, chunk: Vec<u8>) -> Box<dyn Future<Item = (), Error = String>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/client/main.rs:154:40
[INFO] [stdout]     |
[INFO] [stdout] 154 | fn send_eof(info: &SessionInfo) -> Box<Future<Item = (), Error = String>> {
[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] 154 - fn send_eof(info: &SessionInfo) -> Box<Future<Item = (), Error = String>> {
[INFO] [stdout] 154 + fn send_eof(info: &SessionInfo) -> Box<dyn Future<Item = (), Error = String>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/client/main.rs:159:47
[INFO] [stdout]     |
[INFO] [stdout] 159 | fn download_stream(info: &SessionInfo) -> Box<Stream<Item = Vec<u8>, Error = String>> {
[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 - fn download_stream(info: &SessionInfo) -> Box<Stream<Item = Vec<u8>, Error = String>> {
[INFO] [stdout] 159 + fn download_stream(info: &SessionInfo) -> Box<dyn Stream<Item = Vec<u8>, Error = String>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/client/main.rs:186:10
[INFO] [stdout]     |
[INFO] [stdout] 186 | ) -> Box<Future<Item = Vec<u8>, Error = String>> {
[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 = Vec<u8>, Error = String>> {
[INFO] [stdout] 186 + ) -> Box<dyn Future<Item = Vec<u8>, Error = String>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/server/main.rs:66:10
[INFO] [stdout]    |
[INFO] [stdout] 66 | ) -> Box<Future<Item = (), 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] 66 - ) -> Box<Future<Item = (), Error = ()>> {
[INFO] [stdout] 66 + ) -> Box<dyn Future<Item = (), Error = ()>> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/server/session.rs:34:14
[INFO] [stdout]    |
[INFO] [stdout] 34 |     ) -> Box<Future<Item = Session, Error = io::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] 34 -     ) -> Box<Future<Item = Session, Error = io::Error>> {
[INFO] [stdout] 34 +     ) -> Box<dyn Future<Item = Session, Error = io::Error>> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/server/server.rs:37:43
[INFO] [stdout]    |
[INFO] [stdout] 37 |     fn connect(&self, proof: &str) -> Box<Future<Item = Vec<u8>, Error = String>> {
[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] 37 -     fn connect(&self, proof: &str) -> Box<Future<Item = Vec<u8>, Error = String>> {
[INFO] [stdout] 37 +     fn connect(&self, proof: &str) -> Box<dyn Future<Item = Vec<u8>, Error = String>> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/server/server.rs:57:55
[INFO] [stdout]    |
[INFO] [stdout] 57 |     fn upload(&self, req: Request, id: String) -> Box<Future<Item = Vec<u8>, Error = String>> {
[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] 57 -     fn upload(&self, req: Request, id: String) -> Box<Future<Item = Vec<u8>, Error = String>> {
[INFO] [stdout] 57 +     fn upload(&self, req: Request, id: String) -> Box<dyn Future<Item = Vec<u8>, Error = String>> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/server/server.rs:76:41
[INFO] [stdout]    |
[INFO] [stdout] 76 |     fn download(&self, id: &str) -> Box<Future<Item = Vec<u8>, Error = String>> {
[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] 76 -     fn download(&self, id: &str) -> Box<Future<Item = Vec<u8>, Error = String>> {
[INFO] [stdout] 76 +     fn download(&self, id: &str) -> Box<dyn Future<Item = Vec<u8>, Error = String>> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/server/server.rs:94:38
[INFO] [stdout]    |
[INFO] [stdout] 94 |     fn close(&self, id: &str) -> Box<Future<Item = Vec<u8>, Error = String>> {
[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] 94 -     fn close(&self, id: &str) -> Box<Future<Item = Vec<u8>, Error = String>> {
[INFO] [stdout] 94 +     fn close(&self, id: &str) -> Box<dyn Future<Item = Vec<u8>, Error = String>> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/server/server.rs:102:30
[INFO] [stdout]     |
[INFO] [stdout] 102 |     fn invalid(&self) -> Box<Future<Item = Vec<u8>, Error = String>> {
[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] 102 -     fn invalid(&self) -> Box<Future<Item = Vec<u8>, Error = String>> {
[INFO] [stdout] 102 +     fn invalid(&self) -> Box<dyn Future<Item = Vec<u8>, Error = String>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/server/server.rs:110:14
[INFO] [stdout]     |
[INFO] [stdout] 110 |     ) -> Box<Future<Item = R, Error = String>> where F: FnOnce(&mut Session) -> R {
[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] 110 -     ) -> Box<Future<Item = R, Error = String>> where F: FnOnce(&mut Session) -> R {
[INFO] [stdout] 110 +     ) -> Box<dyn Future<Item = R, Error = String>> where F: FnOnce(&mut Session) -> R {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/server/server.rs:130:23
[INFO] [stdout]     |
[INFO] [stdout] 130 |     type Future = Box<Future<Item = Self::Response, Error = Self::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] 130 -     type Future = Box<Future<Item = Self::Response, Error = Self::Error>>;
[INFO] [stdout] 130 +     type Future = Box<dyn Future<Item = Self::Response, Error = Self::Error>>;
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/client/main.rs:108:30
[INFO] [stdout]     |
[INFO] [stdout] 108 |         let read_future: Box<Future<Item = (), Error = String>> = Box::new(
[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] 108 -         let read_future: Box<Future<Item = (), Error = String>> = Box::new(
[INFO] [stdout] 108 +         let read_future: Box<dyn Future<Item = (), Error = String>> = Box::new(
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/client/main.rs:113:31
[INFO] [stdout]     |
[INFO] [stdout] 113 |         let write_future: Box<Future<Item = (), Error = String>> = Box::new(
[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] 113 -         let write_future: Box<Future<Item = (), Error = String>> = Box::new(
[INFO] [stdout] 113 +         let write_future: Box<dyn Future<Item = (), Error = String>> = Box::new(
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/server/server.rs:179:38
[INFO] [stdout]     |
[INFO] [stdout] 179 |         let prefixes: Vec<(&str, Box<Fn(String) -> RequestInfo>)> = vec![
[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] 179 -         let prefixes: Vec<(&str, Box<Fn(String) -> RequestInfo>)> = vec![
[INFO] [stdout] 179 +         let prefixes: Vec<(&str, Box<dyn Fn(String) -> RequestInfo>)> = vec![
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.34s
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "8a56a7d95c526f731fcddb860b03c0152900e2d4a51b3870c5a853ff78222dd2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8a56a7d95c526f731fcddb860b03c0152900e2d4a51b3870c5a853ff78222dd2", kill_on_drop: false }`
[INFO] [stdout] 8a56a7d95c526f731fcddb860b03c0152900e2d4a51b3870c5a853ff78222dd2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-66/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-66/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] f1f3d495fd19f74bd7e1b4adb3444d12fc7d3cb45f0cb87c6702322861a450fd
[INFO] running `Command { std: "docker" "start" "-a" "f1f3d495fd19f74bd7e1b4adb3444d12fc7d3cb45f0cb87c6702322861a450fd", kill_on_drop: false }`
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/server/main.rs:66:10
[INFO] [stderr]    |
[INFO] [stderr] 66 | ) -> Box<Future<Item = (), 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] 66 - ) -> Box<Future<Item = (), Error = ()>> {
[INFO] [stderr] 66 + ) -> Box<dyn Future<Item = (), Error = ()>> {
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/server/session.rs:34:14
[INFO] [stderr]    |
[INFO] [stderr] 34 |     ) -> Box<Future<Item = Session, Error = io::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] 34 -     ) -> Box<Future<Item = Session, Error = io::Error>> {
[INFO] [stderr] 34 +     ) -> Box<dyn Future<Item = Session, Error = io::Error>> {
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/server/server.rs:37:43
[INFO] [stderr]    |
[INFO] [stderr] 37 |     fn connect(&self, proof: &str) -> Box<Future<Item = Vec<u8>, Error = String>> {
[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] 37 -     fn connect(&self, proof: &str) -> Box<Future<Item = Vec<u8>, Error = String>> {
[INFO] [stderr] 37 +     fn connect(&self, proof: &str) -> Box<dyn Future<Item = Vec<u8>, Error = String>> {
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/server/server.rs:57:55
[INFO] [stderr]    |
[INFO] [stderr] 57 |     fn upload(&self, req: Request, id: String) -> Box<Future<Item = Vec<u8>, Error = String>> {
[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] 57 -     fn upload(&self, req: Request, id: String) -> Box<Future<Item = Vec<u8>, Error = String>> {
[INFO] [stderr] 57 +     fn upload(&self, req: Request, id: String) -> Box<dyn Future<Item = Vec<u8>, Error = String>> {
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/server/server.rs:76:41
[INFO] [stderr]    |
[INFO] [stderr] 76 |     fn download(&self, id: &str) -> Box<Future<Item = Vec<u8>, Error = String>> {
[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] 76 -     fn download(&self, id: &str) -> Box<Future<Item = Vec<u8>, Error = String>> {
[INFO] [stderr] 76 +     fn download(&self, id: &str) -> Box<dyn Future<Item = Vec<u8>, Error = String>> {
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/server/server.rs:94:38
[INFO] [stderr]    |
[INFO] [stderr] 94 |     fn close(&self, id: &str) -> Box<Future<Item = Vec<u8>, Error = String>> {
[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] 94 -     fn close(&self, id: &str) -> Box<Future<Item = Vec<u8>, Error = String>> {
[INFO] [stderr] 94 +     fn close(&self, id: &str) -> Box<dyn Future<Item = Vec<u8>, Error = String>> {
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/server/server.rs:102:30
[INFO] [stderr]     |
[INFO] [stderr] 102 |     fn invalid(&self) -> Box<Future<Item = Vec<u8>, Error = String>> {
[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] 102 -     fn invalid(&self) -> Box<Future<Item = Vec<u8>, Error = String>> {
[INFO] [stderr] 102 +     fn invalid(&self) -> Box<dyn Future<Item = Vec<u8>, Error = String>> {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/server/server.rs:110:14
[INFO] [stderr]     |
[INFO] [stderr] 110 |     ) -> Box<Future<Item = R, Error = String>> where F: FnOnce(&mut Session) -> R {
[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] 110 -     ) -> Box<Future<Item = R, Error = String>> where F: FnOnce(&mut Session) -> R {
[INFO] [stderr] 110 +     ) -> Box<dyn Future<Item = R, Error = String>> where F: FnOnce(&mut Session) -> R {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/server/server.rs:130:23
[INFO] [stderr]     |
[INFO] [stderr] 130 |     type Future = Box<Future<Item = Self::Response, Error = Self::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] 130 -     type Future = Box<Future<Item = Self::Response, Error = Self::Error>>;
[INFO] [stderr] 130 +     type Future = Box<dyn Future<Item = Self::Response, Error = Self::Error>>;
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/server/server.rs:179:38
[INFO] [stderr]     |
[INFO] [stderr] 179 |         let prefixes: Vec<(&str, Box<Fn(String) -> RequestInfo>)> = vec![
[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] 179 -         let prefixes: Vec<(&str, Box<Fn(String) -> RequestInfo>)> = vec![
[INFO] [stderr] 179 +         let prefixes: Vec<(&str, Box<dyn Fn(String) -> RequestInfo>)> = vec![
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/client/main.rs:102:10
[INFO] [stderr]     |
[INFO] [stderr] 102 | ) -> Box<Future<Item = (), Error = String>> {
[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] 102 - ) -> Box<Future<Item = (), Error = String>> {
[INFO] [stderr] 102 + ) -> Box<dyn Future<Item = (), Error = String>> {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/client/main.rs:126:10
[INFO] [stderr]     |
[INFO] [stderr] 126 | ) -> Box<Future<Item = String, Error = String>> {
[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] 126 - ) -> Box<Future<Item = String, Error = String>> {
[INFO] [stderr] 126 + ) -> Box<dyn Future<Item = String, Error = String>> {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/client/main.rs:134:59
[INFO] [stderr]     |
[INFO] [stderr] 134 | fn upload_chunk(info: SessionInfo, chunk: Vec<u8>) -> Box<Future<Item = (), Error = String>> {
[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] 134 - fn upload_chunk(info: SessionInfo, chunk: Vec<u8>) -> Box<Future<Item = (), Error = String>> {
[INFO] [stderr] 134 + fn upload_chunk(info: SessionInfo, chunk: Vec<u8>) -> Box<dyn Future<Item = (), Error = String>> {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/client/main.rs:154:40
[INFO] [stderr]     |
[INFO] [stderr] 154 | fn send_eof(info: &SessionInfo) -> Box<Future<Item = (), Error = String>> {
[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] 154 - fn send_eof(info: &SessionInfo) -> Box<Future<Item = (), Error = String>> {
[INFO] [stderr] 154 + fn send_eof(info: &SessionInfo) -> Box<dyn Future<Item = (), Error = String>> {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/client/main.rs:159:47
[INFO] [stderr]     |
[INFO] [stderr] 159 | fn download_stream(info: &SessionInfo) -> Box<Stream<Item = Vec<u8>, Error = String>> {
[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 - fn download_stream(info: &SessionInfo) -> Box<Stream<Item = Vec<u8>, Error = String>> {
[INFO] [stderr] 159 + fn download_stream(info: &SessionInfo) -> Box<dyn Stream<Item = Vec<u8>, Error = String>> {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/client/main.rs:186:10
[INFO] [stderr]     |
[INFO] [stderr] 186 | ) -> Box<Future<Item = Vec<u8>, Error = String>> {
[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 = Vec<u8>, Error = String>> {
[INFO] [stderr] 186 + ) -> Box<dyn Future<Item = Vec<u8>, Error = String>> {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/client/main.rs:108:30
[INFO] [stderr]     |
[INFO] [stderr] 108 |         let read_future: Box<Future<Item = (), Error = String>> = Box::new(
[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] 108 -         let read_future: Box<Future<Item = (), Error = String>> = Box::new(
[INFO] [stderr] 108 +         let read_future: Box<dyn Future<Item = (), Error = String>> = Box::new(
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/client/main.rs:113:31
[INFO] [stderr]     |
[INFO] [stderr] 113 |         let write_future: Box<Future<Item = (), Error = String>> = Box::new(
[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] 113 -         let write_future: Box<Future<Item = (), Error = String>> = Box::new(
[INFO] [stderr] 113 +         let write_future: Box<dyn Future<Item = (), Error = String>> = Box::new(
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: `squidtun` (bin "squidtun-server" test) generated 10 warnings
[INFO] [stderr] warning: `squidtun` (bin "squidtun-client" test) generated 8 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.08s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/squidtun-2dc70b85a8043b70)
[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] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/squidtun_client-030cbf348812e724)
[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] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/squidtun_server-d9fbe4f9fc0bb289)
[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] [stderr]    Doc-tests squidtun
[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" "f1f3d495fd19f74bd7e1b4adb3444d12fc7d3cb45f0cb87c6702322861a450fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f1f3d495fd19f74bd7e1b4adb3444d12fc7d3cb45f0cb87c6702322861a450fd", kill_on_drop: false }`
[INFO] [stdout] f1f3d495fd19f74bd7e1b4adb3444d12fc7d3cb45f0cb87c6702322861a450fd