[INFO] cloning repository https://github.com/redox-os/redox-ssh
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/redox-os/redox-ssh" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fredox-os%2Fredox-ssh", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fredox-os%2Fredox-ssh'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 656f021eb94898005fe10477e32181c56e989c5b
[INFO] testing redox-os/redox-ssh against 1.75.0 for beta-1.76-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fredox-os%2Fredox-ssh" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/redox-os/redox-ssh on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/redox-os/redox-ssh
[INFO] finished tweaking git repo https://github.com/redox-os/redox-ssh
[INFO] tweaked toml for git repo https://github.com/redox-os/redox-ssh written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/redox-os/redox-ssh already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rustc-serialize v0.3.20
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 16723f6cb87e7fbb082867bf19d717c699e78b9f2278ad4024b70f6e2b5f14f7
[INFO] running `Command { std: "docker" "start" "-a" "16723f6cb87e7fbb082867bf19d717c699e78b9f2278ad4024b70f6e2b5f14f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "16723f6cb87e7fbb082867bf19d717c699e78b9f2278ad4024b70f6e2b5f14f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "16723f6cb87e7fbb082867bf19d717c699e78b9f2278ad4024b70f6e2b5f14f7", kill_on_drop: false }`
[INFO] [stdout] 16723f6cb87e7fbb082867bf19d717c699e78b9f2278ad4024b70f6e2b5f14f7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1c8e20b776e45f9fbcc20c65c743b3e2c2c1abb8e39aa4d2bfa8de496a3f311f
[INFO] running `Command { std: "docker" "start" "-a" "1c8e20b776e45f9fbcc20c65c743b3e2c2c1abb8e39aa4d2bfa8de496a3f311f", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.140
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling num-bigint v0.4.3
[INFO] [stderr]    Compiling rustc-serialize v0.3.20
[INFO] [stderr]    Compiling log v0.3.9
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling time v0.1.45
[INFO] [stderr]    Compiling rand v0.3.23
[INFO] [stderr]    Compiling rust-crypto v0.2.36
[INFO] [stderr]    Compiling redox-ssh v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/message.rs:47:15
[INFO] [stdout]    |
[INFO] [stdout] 47 |             30...49 => KeyExchange(id),
[INFO] [stdout]    |               ^^^ help: use `..=` for an inclusive range
[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]    = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/message.rs:52:15
[INFO] [stdout]    |
[INFO] [stdout] 52 |             60...79 => UserAuth(id),
[INFO] [stdout]    |               ^^^ help: use `..=` for an inclusive range
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `rand` is imported redundantly
[INFO] [stdout]    --> src/connection.rs:406:20
[INFO] [stdout]     |
[INFO] [stdout] 406 |         use rand::{self, Rng};
[INFO] [stdout]     |                    ^^^^
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/lib.rs:2:1
[INFO] [stdout]     |
[INFO] [stdout] 2   | extern crate rand;
[INFO] [stdout]     | ------------------ the item `rand` is already imported here
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `libc` is imported redundantly
[INFO] [stdout]   --> src/sys/unix.rs:6:9
[INFO] [stdout]    |
[INFO] [stdout] 6  |     use libc;
[INFO] [stdout]    |         ^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:10:1
[INFO] [stdout]    |
[INFO] [stdout] 10 | extern crate libc;
[INFO] [stdout]    | ------------------ the item `libc` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `libc` is imported redundantly
[INFO] [stdout]   --> src/sys/unix.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 15 |     use libc;
[INFO] [stdout]    |         ^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:10:1
[INFO] [stdout]    |
[INFO] [stdout] 10 | extern crate libc;
[INFO] [stdout]    | ------------------ the item `libc` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `libc` is imported redundantly
[INFO] [stdout]   --> src/sys/unix.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 20 |     use libc;
[INFO] [stdout]    |         ^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:10:1
[INFO] [stdout]    |
[INFO] [stdout] 10 | extern crate libc;
[INFO] [stdout]    | ------------------ the item `libc` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `libc` is imported redundantly
[INFO] [stdout]   --> src/sys/unix.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |     use libc;
[INFO] [stdout]    |         ^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:10:1
[INFO] [stdout]    |
[INFO] [stdout] 10 | extern crate libc;
[INFO] [stdout]    | ------------------ the item `libc` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/connection.rs:38:30
[INFO] [stdout]    |
[INFO] [stdout] 38 |     key_exchange: Option<Box<KeyExchange>>,
[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]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 38 |     key_exchange: Option<Box<dyn KeyExchange>>,
[INFO] [stdout]    |                              +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/connection.rs:40:29
[INFO] [stdout]    |
[INFO] [stdout] 40 |     encryption: Option<(Box<Encryption>, Box<Encryption>)>,
[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] 40 |     encryption: Option<(Box<dyn Encryption>, Box<Encryption>)>,
[INFO] [stdout]    |                             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/connection.rs:40:46
[INFO] [stdout]    |
[INFO] [stdout] 40 |     encryption: Option<(Box<Encryption>, Box<Encryption>)>,
[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] 40 |     encryption: Option<(Box<Encryption>, Box<dyn Encryption>)>,
[INFO] [stdout]    |                                              +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/connection.rs:41:22
[INFO] [stdout]    |
[INFO] [stdout] 41 |     mac: Option<(Box<MacAlgorithm>, Box<MacAlgorithm>)>,
[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] 41 |     mac: Option<(Box<dyn MacAlgorithm>, Box<MacAlgorithm>)>,
[INFO] [stdout]    |                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/connection.rs:41:41
[INFO] [stdout]    |
[INFO] [stdout] 41 |     mac: Option<(Box<MacAlgorithm>, Box<MacAlgorithm>)>,
[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] 41 |     mac: Option<(Box<MacAlgorithm>, Box<dyn MacAlgorithm>)>,
[INFO] [stdout]    |                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/encryption/aes_ctr.rs:7:17
[INFO] [stdout]   |
[INFO] [stdout] 7 |     cipher: Box<SynchronousStreamCipher + 'static>,
[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] 7 |     cipher: Box<dyn SynchronousStreamCipher + 'static>,
[INFO] [stdout]   |                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/encryption/mod.rs:13:25
[INFO] [stdout]    |
[INFO] [stdout] 13 |     encryption: &'a mut Encryption,
[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] 13 |     encryption: &'a mut dyn Encryption,
[INFO] [stdout]    |                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/encryption/mod.rs:14:21
[INFO] [stdout]    |
[INFO] [stdout] 14 |     stream: &'a mut Read,
[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] 14 |     stream: &'a mut dyn Read,
[INFO] [stdout]    |                     +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/public_key/mod.rs:24:57
[INFO] [stdout]    |
[INFO] [stdout] 24 |     pub generate_key_pair: fn(bits: Option<u32>) -> Box<KeyPair>,
[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] 24 |     pub generate_key_pair: fn(bits: Option<u32>) -> Box<dyn KeyPair>,
[INFO] [stdout]    |                                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/public_key/mod.rs:25:28
[INFO] [stdout]    |
[INFO] [stdout] 25 |     pub import: fn(r: &mut Read) -> io::Result<Box<KeyPair>>,
[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] 25 |     pub import: fn(r: &mut dyn Read) -> io::Result<Box<KeyPair>>,
[INFO] [stdout]    |                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/public_key/mod.rs:25:52
[INFO] [stdout]    |
[INFO] [stdout] 25 |     pub import: fn(r: &mut Read) -> io::Result<Box<KeyPair>>,
[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] 25 |     pub import: fn(r: &mut Read) -> io::Result<Box<dyn KeyPair>>,
[INFO] [stdout]    |                                                    +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/public_key/mod.rs:26:33
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub read_public: fn(r: &mut Read) -> io::Result<Box<KeyPair>>,
[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] 26 |     pub read_public: fn(r: &mut dyn Read) -> io::Result<Box<KeyPair>>,
[INFO] [stdout]    |                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/public_key/mod.rs:26:57
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub read_public: fn(r: &mut Read) -> io::Result<Box<KeyPair>>,
[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] 26 |     pub read_public: fn(r: &mut Read) -> io::Result<Box<dyn KeyPair>>,
[INFO] [stdout]    |                                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/server.rs:12:18
[INFO] [stdout]    |
[INFO] [stdout] 12 |     pub key: Box<KeyPair>,
[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] 12 |     pub key: Box<dyn KeyPair>,
[INFO] [stdout]    |                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/algorithm.rs:60:42
[INFO] [stdout]    |
[INFO] [stdout] 60 |     pub fn instance(&self) -> Option<Box<KeyExchange>> {
[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] 60 |     pub fn instance(&self) -> Option<Box<dyn KeyExchange>> {
[INFO] [stdout]    |                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/connection.rs:87:41
[INFO] [stdout]    |
[INFO] [stdout] 87 |     fn recv(&mut self, mut stream: &mut Read) -> Result<Packet> {
[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] 87 |     fn recv(&mut self, mut stream: &mut dyn Read) -> Result<Packet> {
[INFO] [stdout]    |                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/connection.rs:116:41
[INFO] [stdout]     |
[INFO] [stdout] 116 |     fn send(&mut self, mut stream: &mut Write, packet: Packet)
[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] 116 |     fn send(&mut self, mut stream: &mut dyn Write, packet: Packet)
[INFO] [stdout]     |                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/connection.rs:144:40
[INFO] [stdout]     |
[INFO] [stdout] 144 |     fn send_id(&mut self, stream: &mut Write) -> io::Result<()> {
[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] 144 |     fn send_id(&mut self, stream: &mut dyn Write) -> io::Result<()> {
[INFO] [stdout]     |                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/connection.rs:157:40
[INFO] [stdout]     |
[INFO] [stdout] 157 |     fn read_id(&mut self, stream: &mut Read) -> io::Result<()> {
[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] 157 |     fn read_id(&mut self, stream: &mut dyn Read) -> io::Result<()> {
[INFO] [stdout]     |                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/encryption/mod.rs:18:36
[INFO] [stdout]    |
[INFO] [stdout] 18 |     pub fn new(encryption: &'a mut Encryption, stream: &'a mut Read)
[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] 18 |     pub fn new(encryption: &'a mut dyn Encryption, stream: &'a mut Read)
[INFO] [stdout]    |                                    +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/encryption/mod.rs:18:64
[INFO] [stdout]    |
[INFO] [stdout] 18 |     pub fn new(encryption: &'a mut Encryption, stream: &'a mut Read)
[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] 18 |     pub fn new(encryption: &'a mut Encryption, stream: &'a mut dyn Read)
[INFO] [stdout]    |                                                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/public_key/mod.rs:18:36
[INFO] [stdout]    |
[INFO] [stdout] 18 |     fn write_public(&self, w: &mut Write) -> io::Result<()>;
[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] 18 |     fn write_public(&self, w: &mut dyn Write) -> io::Result<()>;
[INFO] [stdout]    |                                    +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/public_key/mod.rs:19:30
[INFO] [stdout]    |
[INFO] [stdout] 19 |     fn export(&self, w: &mut Write) -> io::Result<()>;
[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] 19 |     fn export(&self, w: &mut dyn Write) -> io::Result<()>;
[INFO] [stdout]    |                              +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/public_key/ed25519.rs:21:40
[INFO] [stdout]    |
[INFO] [stdout] 21 |     fn generate(_: Option<u32>) -> Box<KeyPair> {
[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] 21 |     fn generate(_: Option<u32>) -> Box<dyn KeyPair> {
[INFO] [stdout]    |                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/public_key/ed25519.rs:33:27
[INFO] [stdout]    |
[INFO] [stdout] 33 |     fn import(mut r: &mut Read) -> io::Result<Box<KeyPair>> {
[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] 33 |     fn import(mut r: &mut dyn Read) -> io::Result<Box<KeyPair>> {
[INFO] [stdout]    |                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/public_key/ed25519.rs:33:51
[INFO] [stdout]    |
[INFO] [stdout] 33 |     fn import(mut r: &mut Read) -> io::Result<Box<KeyPair>> {
[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] 33 |     fn import(mut r: &mut Read) -> io::Result<Box<dyn KeyPair>> {
[INFO] [stdout]    |                                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/public_key/ed25519.rs:60:32
[INFO] [stdout]    |
[INFO] [stdout] 60 |     fn read_public(mut r: &mut Read) -> io::Result<Box<KeyPair>> {
[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] 60 |     fn read_public(mut r: &mut dyn Read) -> io::Result<Box<KeyPair>> {
[INFO] [stdout]    |                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/public_key/ed25519.rs:60:56
[INFO] [stdout]    |
[INFO] [stdout] 60 |     fn read_public(mut r: &mut Read) -> io::Result<Box<KeyPair>> {
[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] 60 |     fn read_public(mut r: &mut Read) -> io::Result<Box<dyn KeyPair>> {
[INFO] [stdout]    |                                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/public_key/ed25519.rs:115:36
[INFO] [stdout]     |
[INFO] [stdout] 115 |     fn write_public(&self, w: &mut Write) -> io::Result<()> {
[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] 115 |     fn write_public(&self, w: &mut dyn Write) -> io::Result<()> {
[INFO] [stdout]     |                                    +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/public_key/ed25519.rs:121:30
[INFO] [stdout]     |
[INFO] [stdout] 121 |     fn export(&self, w: &mut Write) -> io::Result<()> {
[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] 121 |     fn export(&self, w: &mut dyn Write) -> io::Result<()> {
[INFO] [stdout]     |                              +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/error.rs:20:53
[INFO] [stdout]    |
[INFO] [stdout] 20 |         write!(f, "connection error: {}", (self as &Error).description())
[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] 20 |         write!(f, "connection error: {}", (self as &dyn Error).description())
[INFO] [stdout]    |                                                     +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/error.rs:20:60
[INFO] [stdout]    |
[INFO] [stdout] 20 |         write!(f, "connection error: {}", (self as &Error).description())
[INFO] [stdout]    |                                                            ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::os::unix::process::CommandExt::before_exec`: should be unsafe, use `pre_exec` instead
[INFO] [stdout]    --> src/channel.rs:146:26
[INFO] [stdout]     |
[INFO] [stdout] 146 |                         .before_exec(|| sys::before_exec())
[INFO] [stdout]     |                          ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/server.rs:46:9
[INFO] [stdout]    |
[INFO] [stdout] 28 | /         loop {
[INFO] [stdout] 29 | |             let (mut stream, addr) = listener.accept()?;
[INFO] [stdout] 30 | |             let config = self.config.clone();
[INFO] [stdout] 31 | |
[INFO] [stdout] ...  |
[INFO] [stdout] 43 | |             });
[INFO] [stdout] 44 | |         }
[INFO] [stdout]    | |_________- any code following this expression is unreachable
[INFO] [stdout] 45 |
[INFO] [stdout] 46 |           Ok(())
[INFO] [stdout]    |           ^^^^^^ unreachable expression
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/connection.rs:63:44
[INFO] [stdout]    |
[INFO] [stdout] 63 |     pub fn run<S: Read + Write>(&mut self, mut stream: &mut S) -> Result<()> {
[INFO] [stdout]    |                                            ----^^^^^^
[INFO] [stdout]    |                                            |
[INFO] [stdout]    |                                            help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `len`
[INFO] [stdout]    --> src/connection.rs:177:43
[INFO] [stdout]     |
[INFO] [stdout] 177 |     fn generate_key(&mut self, id: &[u8], len: usize) -> Result<Vec<u8>> {
[INFO] [stdout]     |                                           ^^^ help: if this is intentional, prefix it with an underscore: `_len`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `packet`
[INFO] [stdout]    --> src/connection.rs:217:28
[INFO] [stdout]     |
[INFO] [stdout] 217 |     fn new_keys(&mut self, packet: Packet) -> Result<Option<Packet>> {
[INFO] [stdout]     |                            ^^^^^^ help: if this is intentional, prefix it with an underscore: `_packet`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `channel_type`
[INFO] [stdout]    --> src/connection.rs:287:13
[INFO] [stdout]     |
[INFO] [stdout] 287 |         let channel_type = reader.read_utf8()?;
[INFO] [stdout]     |             ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_channel_type`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `chan`
[INFO] [stdout]    --> src/connection.rs:292:35
[INFO] [stdout]     |
[INFO] [stdout] 292 |         let id = if let Some((id, chan)) = self.channels.iter().next_back() {
[INFO] [stdout]     |                                   ^^^^ help: if this is intentional, prefix it with an underscore: `_chan`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/connection.rs:337:17
[INFO] [stdout]     |
[INFO] [stdout] 337 |             let mut channel = self.channels.get_mut(&channel_id).unwrap();
[INFO] [stdout]     |                 ----^^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/connection.rs:359:13
[INFO] [stdout]     |
[INFO] [stdout] 359 |         let mut channel = self.channels.get_mut(&channel_id).unwrap();
[INFO] [stdout]     |             ----^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `enc_algos_c2s`
[INFO] [stdout]    --> src/connection.rs:376:17
[INFO] [stdout]     |
[INFO] [stdout] 376 |             let enc_algos_c2s = reader.read_enum_list::<EncryptionAlgorithm>()?;
[INFO] [stdout]     |                 ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_enc_algos_c2s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `mac_algos_c2s`
[INFO] [stdout]    --> src/connection.rs:379:17
[INFO] [stdout]     |
[INFO] [stdout] 379 |             let mac_algos_c2s = reader.read_enum_list::<MacAlgorithm>()?;
[INFO] [stdout]     |                 ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_mac_algos_c2s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `comp_algos_c2s`
[INFO] [stdout]    --> src/connection.rs:382:17
[INFO] [stdout]     |
[INFO] [stdout] 382 |             let comp_algos_c2s = reader
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_comp_algos_c2s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/key_exchange/curve25519.rs:59:21
[INFO] [stdout]    |
[INFO] [stdout] 59 |                     _ => return KexResult::Error,
[INFO] [stdout]    |                     ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Ok` is never constructed
[INFO] [stdout]   --> src/key_exchange/mod.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub enum KexResult {
[INFO] [stdout]    |          --------- variant in this enum
[INFO] [stdout] 11 |     Ok(Packet),
[INFO] [stdout]    |     ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `peer_id`, `process`, and `peer_window_size` are never read
[INFO] [stdout]   --> src/channel.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub struct Channel {
[INFO] [stdout]    |            ------- fields in this struct
[INFO] [stdout] 14 |     id: ChannelId,
[INFO] [stdout] 15 |     peer_id: ChannelId,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 16 |     process: Option<process::Child>,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 20 |     peer_window_size: u32,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Channel` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 54 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]  --> src/bin/ssh-keygen.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     keypair.export(&mut buffer);
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]   = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let _ = keypair.export(&mut buffer);
[INFO] [stdout]   |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.69s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: rustc-serialize v0.3.20
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 3`
[INFO] running `Command { std: "docker" "inspect" "1c8e20b776e45f9fbcc20c65c743b3e2c2c1abb8e39aa4d2bfa8de496a3f311f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1c8e20b776e45f9fbcc20c65c743b3e2c2c1abb8e39aa4d2bfa8de496a3f311f", kill_on_drop: false }`
[INFO] [stdout] 1c8e20b776e45f9fbcc20c65c743b3e2c2c1abb8e39aa4d2bfa8de496a3f311f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2cf43a4e184857b87a0e54f36ad4f16d20b721682596501b67d00d5dcf620a60
[INFO] running `Command { std: "docker" "start" "-a" "2cf43a4e184857b87a0e54f36ad4f16d20b721682596501b67d00d5dcf620a60", kill_on_drop: false }`
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/message.rs:47:15
[INFO] [stdout]    |
[INFO] [stdout] 47 |             30...49 => KeyExchange(id),
[INFO] [stdout]    |               ^^^ help: use `..=` for an inclusive range
[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]    = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/message.rs:52:15
[INFO] [stdout]    |
[INFO] [stdout] 52 |             60...79 => UserAuth(id),
[INFO] [stdout]    |               ^^^ help: use `..=` for an inclusive range
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `rand` is imported redundantly
[INFO] [stdout]    --> src/connection.rs:406:20
[INFO] [stdout]     |
[INFO] [stdout] 406 |         use rand::{self, Rng};
[INFO] [stdout]     |                    ^^^^
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/lib.rs:2:1
[INFO] [stdout]     |
[INFO] [stdout] 2   | extern crate rand;
[INFO] [stdout]     | ------------------ the item `rand` is already imported here
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `libc` is imported redundantly
[INFO] [stdout]   --> src/sys/unix.rs:6:9
[INFO] [stdout]    |
[INFO] [stdout] 6  |     use libc;
[INFO] [stdout]    |         ^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:10:1
[INFO] [stdout]    |
[INFO] [stdout] 10 | extern crate libc;
[INFO] [stdout]    | ------------------ the item `libc` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `libc` is imported redundantly
[INFO] [stdout]   --> src/sys/unix.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 15 |     use libc;
[INFO] [stdout]    |         ^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:10:1
[INFO] [stdout]    |
[INFO] [stdout] 10 | extern crate libc;
[INFO] [stdout]    | ------------------ the item `libc` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `libc` is imported redundantly
[INFO] [stdout]   --> src/sys/unix.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 20 |     use libc;
[INFO] [stdout]    |         ^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:10:1
[INFO] [stdout]    |
[INFO] [stdout] 10 | extern crate libc;
[INFO] [stdout]    | ------------------ the item `libc` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `libc` is imported redundantly
[INFO] [stdout]   --> src/sys/unix.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |     use libc;
[INFO] [stdout]    |         ^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:10:1
[INFO] [stdout]    |
[INFO] [stdout] 10 | extern crate libc;
[INFO] [stdout]    | ------------------ the item `libc` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/connection.rs:38:30
[INFO] [stdout]    |
[INFO] [stdout] 38 |     key_exchange: Option<Box<KeyExchange>>,
[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]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 38 |     key_exchange: Option<Box<dyn KeyExchange>>,
[INFO] [stdout]    |                              +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/connection.rs:40:29
[INFO] [stdout]    |
[INFO] [stdout] 40 |     encryption: Option<(Box<Encryption>, Box<Encryption>)>,
[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] 40 |     encryption: Option<(Box<dyn Encryption>, Box<Encryption>)>,
[INFO] [stdout]    |                             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/connection.rs:40:46
[INFO] [stdout]    |
[INFO] [stdout] 40 |     encryption: Option<(Box<Encryption>, Box<Encryption>)>,
[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] 40 |     encryption: Option<(Box<Encryption>, Box<dyn Encryption>)>,
[INFO] [stdout]    |                                              +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/connection.rs:41:22
[INFO] [stdout]    |
[INFO] [stdout] 41 |     mac: Option<(Box<MacAlgorithm>, Box<MacAlgorithm>)>,
[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] 41 |     mac: Option<(Box<dyn MacAlgorithm>, Box<MacAlgorithm>)>,
[INFO] [stdout]    |                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/connection.rs:41:41
[INFO] [stdout]    |
[INFO] [stdout] 41 |     mac: Option<(Box<MacAlgorithm>, Box<MacAlgorithm>)>,
[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] 41 |     mac: Option<(Box<MacAlgorithm>, Box<dyn MacAlgorithm>)>,
[INFO] [stdout]    |                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/encryption/aes_ctr.rs:7:17
[INFO] [stdout]   |
[INFO] [stdout] 7 |     cipher: Box<SynchronousStreamCipher + 'static>,
[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] 7 |     cipher: Box<dyn SynchronousStreamCipher + 'static>,
[INFO] [stdout]   |                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/encryption/mod.rs:13:25
[INFO] [stdout]    |
[INFO] [stdout] 13 |     encryption: &'a mut Encryption,
[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] 13 |     encryption: &'a mut dyn Encryption,
[INFO] [stdout]    |                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/encryption/mod.rs:14:21
[INFO] [stdout]    |
[INFO] [stdout] 14 |     stream: &'a mut Read,
[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] 14 |     stream: &'a mut dyn Read,
[INFO] [stdout]    |                     +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/public_key/mod.rs:24:57
[INFO] [stdout]    |
[INFO] [stdout] 24 |     pub generate_key_pair: fn(bits: Option<u32>) -> Box<KeyPair>,
[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] 24 |     pub generate_key_pair: fn(bits: Option<u32>) -> Box<dyn KeyPair>,
[INFO] [stdout]    |                                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/public_key/mod.rs:25:28
[INFO] [stdout]    |
[INFO] [stdout] 25 |     pub import: fn(r: &mut Read) -> io::Result<Box<KeyPair>>,
[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] 25 |     pub import: fn(r: &mut dyn Read) -> io::Result<Box<KeyPair>>,
[INFO] [stdout]    |                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/public_key/mod.rs:25:52
[INFO] [stdout]    |
[INFO] [stdout] 25 |     pub import: fn(r: &mut Read) -> io::Result<Box<KeyPair>>,
[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] 25 |     pub import: fn(r: &mut Read) -> io::Result<Box<dyn KeyPair>>,
[INFO] [stdout]    |                                                    +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/public_key/mod.rs:26:33
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub read_public: fn(r: &mut Read) -> io::Result<Box<KeyPair>>,
[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] 26 |     pub read_public: fn(r: &mut dyn Read) -> io::Result<Box<KeyPair>>,
[INFO] [stdout]    |                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/public_key/mod.rs:26:57
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub read_public: fn(r: &mut Read) -> io::Result<Box<KeyPair>>,
[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] 26 |     pub read_public: fn(r: &mut Read) -> io::Result<Box<dyn KeyPair>>,
[INFO] [stdout]    |                                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/server.rs:12:18
[INFO] [stdout]    |
[INFO] [stdout] 12 |     pub key: Box<KeyPair>,
[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] 12 |     pub key: Box<dyn KeyPair>,
[INFO] [stdout]    |                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/algorithm.rs:60:42
[INFO] [stdout]    |
[INFO] [stdout] 60 |     pub fn instance(&self) -> Option<Box<KeyExchange>> {
[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] 60 |     pub fn instance(&self) -> Option<Box<dyn KeyExchange>> {
[INFO] [stdout]    |                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/connection.rs:87:41
[INFO] [stdout]    |
[INFO] [stdout] 87 |     fn recv(&mut self, mut stream: &mut Read) -> Result<Packet> {
[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] 87 |     fn recv(&mut self, mut stream: &mut dyn Read) -> Result<Packet> {
[INFO] [stdout]    |                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/connection.rs:116:41
[INFO] [stdout]     |
[INFO] [stdout] 116 |     fn send(&mut self, mut stream: &mut Write, packet: Packet)
[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] 116 |     fn send(&mut self, mut stream: &mut dyn Write, packet: Packet)
[INFO] [stdout]     |                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/connection.rs:144:40
[INFO] [stdout]     |
[INFO] [stdout] 144 |     fn send_id(&mut self, stream: &mut Write) -> io::Result<()> {
[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] 144 |     fn send_id(&mut self, stream: &mut dyn Write) -> io::Result<()> {
[INFO] [stdout]     |                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/connection.rs:157:40
[INFO] [stdout]     |
[INFO] [stdout] 157 |     fn read_id(&mut self, stream: &mut Read) -> io::Result<()> {
[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] 157 |     fn read_id(&mut self, stream: &mut dyn Read) -> io::Result<()> {
[INFO] [stdout]     |                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/encryption/mod.rs:18:36
[INFO] [stdout]    |
[INFO] [stdout] 18 |     pub fn new(encryption: &'a mut Encryption, stream: &'a mut Read)
[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] 18 |     pub fn new(encryption: &'a mut dyn Encryption, stream: &'a mut Read)
[INFO] [stdout]    |                                    +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/encryption/mod.rs:18:64
[INFO] [stdout]    |
[INFO] [stdout] 18 |     pub fn new(encryption: &'a mut Encryption, stream: &'a mut Read)
[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] 18 |     pub fn new(encryption: &'a mut Encryption, stream: &'a mut dyn Read)
[INFO] [stdout]    |                                                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/public_key/mod.rs:18:36
[INFO] [stdout]    |
[INFO] [stdout] 18 |     fn write_public(&self, w: &mut Write) -> io::Result<()>;
[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] 18 |     fn write_public(&self, w: &mut dyn Write) -> io::Result<()>;
[INFO] [stdout]    |                                    +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/public_key/mod.rs:19:30
[INFO] [stdout]    |
[INFO] [stdout] 19 |     fn export(&self, w: &mut Write) -> io::Result<()>;
[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] 19 |     fn export(&self, w: &mut dyn Write) -> io::Result<()>;
[INFO] [stdout]    |                              +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/public_key/ed25519.rs:21:40
[INFO] [stdout]    |
[INFO] [stdout] 21 |     fn generate(_: Option<u32>) -> Box<KeyPair> {
[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] 21 |     fn generate(_: Option<u32>) -> Box<dyn KeyPair> {
[INFO] [stdout]    |                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/public_key/ed25519.rs:33:27
[INFO] [stdout]    |
[INFO] [stdout] 33 |     fn import(mut r: &mut Read) -> io::Result<Box<KeyPair>> {
[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] 33 |     fn import(mut r: &mut dyn Read) -> io::Result<Box<KeyPair>> {
[INFO] [stdout]    |                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/public_key/ed25519.rs:33:51
[INFO] [stdout]    |
[INFO] [stdout] 33 |     fn import(mut r: &mut Read) -> io::Result<Box<KeyPair>> {
[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] 33 |     fn import(mut r: &mut Read) -> io::Result<Box<dyn KeyPair>> {
[INFO] [stdout]    |                                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/public_key/ed25519.rs:60:32
[INFO] [stdout]    |
[INFO] [stdout] 60 |     fn read_public(mut r: &mut Read) -> io::Result<Box<KeyPair>> {
[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] 60 |     fn read_public(mut r: &mut dyn Read) -> io::Result<Box<KeyPair>> {
[INFO] [stdout]    |                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/public_key/ed25519.rs:60:56
[INFO] [stdout]    |
[INFO] [stdout] 60 |     fn read_public(mut r: &mut Read) -> io::Result<Box<KeyPair>> {
[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] 60 |     fn read_public(mut r: &mut Read) -> io::Result<Box<dyn KeyPair>> {
[INFO] [stdout]    |                                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/public_key/ed25519.rs:115:36
[INFO] [stdout]     |
[INFO] [stdout] 115 |     fn write_public(&self, w: &mut Write) -> io::Result<()> {
[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] 115 |     fn write_public(&self, w: &mut dyn Write) -> io::Result<()> {
[INFO] [stdout]     |                                    +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/public_key/ed25519.rs:121:30
[INFO] [stdout]     |
[INFO] [stdout] 121 |     fn export(&self, w: &mut Write) -> io::Result<()> {
[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] 121 |     fn export(&self, w: &mut dyn Write) -> io::Result<()> {
[INFO] [stdout]     |                              +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/error.rs:20:53
[INFO] [stdout]    |
[INFO] [stdout] 20 |         write!(f, "connection error: {}", (self as &Error).description())
[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] 20 |         write!(f, "connection error: {}", (self as &dyn Error).description())
[INFO] [stdout]    |                                                     +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/error.rs:20:60
[INFO] [stdout]    |
[INFO] [stdout] 20 |         write!(f, "connection error: {}", (self as &Error).description())
[INFO] [stdout]    |                                                            ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::os::unix::process::CommandExt::before_exec`: should be unsafe, use `pre_exec` instead
[INFO] [stdout]    --> src/channel.rs:146:26
[INFO] [stdout]     |
[INFO] [stdout] 146 |                         .before_exec(|| sys::before_exec())
[INFO] [stdout]     |                          ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/server.rs:46:9
[INFO] [stdout]    |
[INFO] [stdout] 28 | /         loop {
[INFO] [stdout] 29 | |             let (mut stream, addr) = listener.accept()?;
[INFO] [stdout] 30 | |             let config = self.config.clone();
[INFO] [stdout] 31 | |
[INFO] [stdout] ...  |
[INFO] [stdout] 43 | |             });
[INFO] [stdout] 44 | |         }
[INFO] [stdout]    | |_________- any code following this expression is unreachable
[INFO] [stdout] 45 |
[INFO] [stdout] 46 |           Ok(())
[INFO] [stdout]    |           ^^^^^^ unreachable expression
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/connection.rs:63:44
[INFO] [stdout]    |
[INFO] [stdout] 63 |     pub fn run<S: Read + Write>(&mut self, mut stream: &mut S) -> Result<()> {
[INFO] [stdout]    |                                            ----^^^^^^
[INFO] [stdout]    |                                            |
[INFO] [stdout]    |                                            help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `len`
[INFO] [stdout]    --> src/connection.rs:177:43
[INFO] [stdout]     |
[INFO] [stdout] 177 |     fn generate_key(&mut self, id: &[u8], len: usize) -> Result<Vec<u8>> {
[INFO] [stdout]     |                                           ^^^ help: if this is intentional, prefix it with an underscore: `_len`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `packet`
[INFO] [stdout]    --> src/connection.rs:217:28
[INFO] [stdout]     |
[INFO] [stdout] 217 |     fn new_keys(&mut self, packet: Packet) -> Result<Option<Packet>> {
[INFO] [stdout]     |                            ^^^^^^ help: if this is intentional, prefix it with an underscore: `_packet`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `channel_type`
[INFO] [stdout]    --> src/connection.rs:287:13
[INFO] [stdout]     |
[INFO] [stdout] 287 |         let channel_type = reader.read_utf8()?;
[INFO] [stdout]     |             ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_channel_type`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `chan`
[INFO] [stdout]    --> src/connection.rs:292:35
[INFO] [stdout]     |
[INFO] [stdout] 292 |         let id = if let Some((id, chan)) = self.channels.iter().next_back() {
[INFO] [stdout]     |                                   ^^^^ help: if this is intentional, prefix it with an underscore: `_chan`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/connection.rs:337:17
[INFO] [stdout]     |
[INFO] [stdout] 337 |             let mut channel = self.channels.get_mut(&channel_id).unwrap();
[INFO] [stdout]     |                 ----^^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/connection.rs:359:13
[INFO] [stdout]     |
[INFO] [stdout] 359 |         let mut channel = self.channels.get_mut(&channel_id).unwrap();
[INFO] [stdout]     |             ----^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `enc_algos_c2s`
[INFO] [stdout]    --> src/connection.rs:376:17
[INFO] [stdout]     |
[INFO] [stdout] 376 |             let enc_algos_c2s = reader.read_enum_list::<EncryptionAlgorithm>()?;
[INFO] [stdout]     |                 ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_enc_algos_c2s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `mac_algos_c2s`
[INFO] [stdout]    --> src/connection.rs:379:17
[INFO] [stdout]     |
[INFO] [stdout] 379 |             let mac_algos_c2s = reader.read_enum_list::<MacAlgorithm>()?;
[INFO] [stdout]     |                 ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_mac_algos_c2s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `comp_algos_c2s`
[INFO] [stdout]    --> src/connection.rs:382:17
[INFO] [stdout]     |
[INFO] [stdout] 382 |             let comp_algos_c2s = reader
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_comp_algos_c2s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/key_exchange/curve25519.rs:59:21
[INFO] [stdout]    |
[INFO] [stdout] 59 |                     _ => return KexResult::Error,
[INFO] [stdout]    |                     ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Ok` is never constructed
[INFO] [stdout]   --> src/key_exchange/mod.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub enum KexResult {
[INFO] [stdout]    |          --------- variant in this enum
[INFO] [stdout] 11 |     Ok(Packet),
[INFO] [stdout]    |     ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `peer_id`, `process`, and `peer_window_size` are never read
[INFO] [stdout]   --> src/channel.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub struct Channel {
[INFO] [stdout]    |            ------- fields in this struct
[INFO] [stdout] 14 |     id: ChannelId,
[INFO] [stdout] 15 |     peer_id: ChannelId,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 16 |     process: Option<process::Child>,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 20 |     peer_window_size: u32,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Channel` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 54 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]  --> src/bin/ssh-keygen.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     keypair.export(&mut buffer);
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]   = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let _ = keypair.export(&mut buffer);
[INFO] [stdout]   |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling redox-ssh v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> tests/public_key.rs:9:37
[INFO] [stdout]   |
[INFO] [stdout] 9 | fn test_export_import(keypair: &Box<KeyPair>) -> Box<KeyPair> {
[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]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]   |
[INFO] [stdout] 9 | fn test_export_import(keypair: &Box<dyn KeyPair>) -> Box<KeyPair> {
[INFO] [stdout]   |                                     +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> tests/public_key.rs:9:54
[INFO] [stdout]   |
[INFO] [stdout] 9 | fn test_export_import(keypair: &Box<KeyPair>) -> Box<KeyPair> {
[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] 9 | fn test_export_import(keypair: &Box<KeyPair>) -> Box<dyn KeyPair> {
[INFO] [stdout]   |                                                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]  --> src/bin/ssh-keygen.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     keypair.export(&mut buffer);
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]   = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let _ = keypair.export(&mut buffer);
[INFO] [stdout]   |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/message.rs:47:15
[INFO] [stdout]    |
[INFO] [stdout] 47 |             30...49 => KeyExchange(id),
[INFO] [stdout]    |               ^^^ help: use `..=` for an inclusive range
[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]    = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/message.rs:52:15
[INFO] [stdout]    |
[INFO] [stdout] 52 |             60...79 => UserAuth(id),
[INFO] [stdout]    |               ^^^ help: use `..=` for an inclusive range
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `rand` is imported redundantly
[INFO] [stdout]    --> src/connection.rs:406:20
[INFO] [stdout]     |
[INFO] [stdout] 406 |         use rand::{self, Rng};
[INFO] [stdout]     |                    ^^^^
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/lib.rs:2:1
[INFO] [stdout]     |
[INFO] [stdout] 2   | extern crate rand;
[INFO] [stdout]     | ------------------ the item `rand` is already imported here
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `libc` is imported redundantly
[INFO] [stdout]   --> src/sys/unix.rs:6:9
[INFO] [stdout]    |
[INFO] [stdout] 6  |     use libc;
[INFO] [stdout]    |         ^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:10:1
[INFO] [stdout]    |
[INFO] [stdout] 10 | extern crate libc;
[INFO] [stdout]    | ------------------ the item `libc` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `libc` is imported redundantly
[INFO] [stdout]   --> src/sys/unix.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 15 |     use libc;
[INFO] [stdout]    |         ^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:10:1
[INFO] [stdout]    |
[INFO] [stdout] 10 | extern crate libc;
[INFO] [stdout]    | ------------------ the item `libc` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `libc` is imported redundantly
[INFO] [stdout]   --> src/sys/unix.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 20 |     use libc;
[INFO] [stdout]    |         ^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:10:1
[INFO] [stdout]    |
[INFO] [stdout] 10 | extern crate libc;
[INFO] [stdout]    | ------------------ the item `libc` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `libc` is imported redundantly
[INFO] [stdout]   --> src/sys/unix.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |     use libc;
[INFO] [stdout]    |         ^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:10:1
[INFO] [stdout]    |
[INFO] [stdout] 10 | extern crate libc;
[INFO] [stdout]    | ------------------ the item `libc` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/connection.rs:38:30
[INFO] [stdout]    |
[INFO] [stdout] 38 |     key_exchange: Option<Box<KeyExchange>>,
[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]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 38 |     key_exchange: Option<Box<dyn KeyExchange>>,
[INFO] [stdout]    |                              +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/connection.rs:40:29
[INFO] [stdout]    |
[INFO] [stdout] 40 |     encryption: Option<(Box<Encryption>, Box<Encryption>)>,
[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] 40 |     encryption: Option<(Box<dyn Encryption>, Box<Encryption>)>,
[INFO] [stdout]    |                             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/connection.rs:40:46
[INFO] [stdout]    |
[INFO] [stdout] 40 |     encryption: Option<(Box<Encryption>, Box<Encryption>)>,
[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] 40 |     encryption: Option<(Box<Encryption>, Box<dyn Encryption>)>,
[INFO] [stdout]    |                                              +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/connection.rs:41:22
[INFO] [stdout]    |
[INFO] [stdout] 41 |     mac: Option<(Box<MacAlgorithm>, Box<MacAlgorithm>)>,
[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] 41 |     mac: Option<(Box<dyn MacAlgorithm>, Box<MacAlgorithm>)>,
[INFO] [stdout]    |                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/connection.rs:41:41
[INFO] [stdout]    |
[INFO] [stdout] 41 |     mac: Option<(Box<MacAlgorithm>, Box<MacAlgorithm>)>,
[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] 41 |     mac: Option<(Box<MacAlgorithm>, Box<dyn MacAlgorithm>)>,
[INFO] [stdout]    |                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/encryption/aes_ctr.rs:7:17
[INFO] [stdout]   |
[INFO] [stdout] 7 |     cipher: Box<SynchronousStreamCipher + 'static>,
[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] 7 |     cipher: Box<dyn SynchronousStreamCipher + 'static>,
[INFO] [stdout]   |                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/encryption/mod.rs:13:25
[INFO] [stdout]    |
[INFO] [stdout] 13 |     encryption: &'a mut Encryption,
[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] 13 |     encryption: &'a mut dyn Encryption,
[INFO] [stdout]    |                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/encryption/mod.rs:14:21
[INFO] [stdout]    |
[INFO] [stdout] 14 |     stream: &'a mut Read,
[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] 14 |     stream: &'a mut dyn Read,
[INFO] [stdout]    |                     +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/public_key/mod.rs:24:57
[INFO] [stdout]    |
[INFO] [stdout] 24 |     pub generate_key_pair: fn(bits: Option<u32>) -> Box<KeyPair>,
[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] 24 |     pub generate_key_pair: fn(bits: Option<u32>) -> Box<dyn KeyPair>,
[INFO] [stdout]    |                                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/public_key/mod.rs:25:28
[INFO] [stdout]    |
[INFO] [stdout] 25 |     pub import: fn(r: &mut Read) -> io::Result<Box<KeyPair>>,
[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] 25 |     pub import: fn(r: &mut dyn Read) -> io::Result<Box<KeyPair>>,
[INFO] [stdout]    |                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/public_key/mod.rs:25:52
[INFO] [stdout]    |
[INFO] [stdout] 25 |     pub import: fn(r: &mut Read) -> io::Result<Box<KeyPair>>,
[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] 25 |     pub import: fn(r: &mut Read) -> io::Result<Box<dyn KeyPair>>,
[INFO] [stdout]    |                                                    +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/public_key/mod.rs:26:33
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub read_public: fn(r: &mut Read) -> io::Result<Box<KeyPair>>,
[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] 26 |     pub read_public: fn(r: &mut dyn Read) -> io::Result<Box<KeyPair>>,
[INFO] [stdout]    |                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/public_key/mod.rs:26:57
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub read_public: fn(r: &mut Read) -> io::Result<Box<KeyPair>>,
[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] 26 |     pub read_public: fn(r: &mut Read) -> io::Result<Box<dyn KeyPair>>,
[INFO] [stdout]    |                                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/server.rs:12:18
[INFO] [stdout]    |
[INFO] [stdout] 12 |     pub key: Box<KeyPair>,
[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] 12 |     pub key: Box<dyn KeyPair>,
[INFO] [stdout]    |                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/algorithm.rs:60:42
[INFO] [stdout]    |
[INFO] [stdout] 60 |     pub fn instance(&self) -> Option<Box<KeyExchange>> {
[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] 60 |     pub fn instance(&self) -> Option<Box<dyn KeyExchange>> {
[INFO] [stdout]    |                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/connection.rs:87:41
[INFO] [stdout]    |
[INFO] [stdout] 87 |     fn recv(&mut self, mut stream: &mut Read) -> Result<Packet> {
[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] 87 |     fn recv(&mut self, mut stream: &mut dyn Read) -> Result<Packet> {
[INFO] [stdout]    |                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/connection.rs:116:41
[INFO] [stdout]     |
[INFO] [stdout] 116 |     fn send(&mut self, mut stream: &mut Write, packet: Packet)
[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] 116 |     fn send(&mut self, mut stream: &mut dyn Write, packet: Packet)
[INFO] [stdout]     |                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/connection.rs:144:40
[INFO] [stdout]     |
[INFO] [stdout] 144 |     fn send_id(&mut self, stream: &mut Write) -> io::Result<()> {
[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] 144 |     fn send_id(&mut self, stream: &mut dyn Write) -> io::Result<()> {
[INFO] [stdout]     |                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/connection.rs:157:40
[INFO] [stdout]     |
[INFO] [stdout] 157 |     fn read_id(&mut self, stream: &mut Read) -> io::Result<()> {
[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] 157 |     fn read_id(&mut self, stream: &mut dyn Read) -> io::Result<()> {
[INFO] [stdout]     |                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/encryption/mod.rs:18:36
[INFO] [stdout]    |
[INFO] [stdout] 18 |     pub fn new(encryption: &'a mut Encryption, stream: &'a mut Read)
[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] 18 |     pub fn new(encryption: &'a mut dyn Encryption, stream: &'a mut Read)
[INFO] [stdout]    |                                    +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/encryption/mod.rs:18:64
[INFO] [stdout]    |
[INFO] [stdout] 18 |     pub fn new(encryption: &'a mut Encryption, stream: &'a mut Read)
[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] 18 |     pub fn new(encryption: &'a mut Encryption, stream: &'a mut dyn Read)
[INFO] [stdout]    |                                                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/public_key/mod.rs:18:36
[INFO] [stdout]    |
[INFO] [stdout] 18 |     fn write_public(&self, w: &mut Write) -> io::Result<()>;
[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] 18 |     fn write_public(&self, w: &mut dyn Write) -> io::Result<()>;
[INFO] [stdout]    |                                    +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/public_key/mod.rs:19:30
[INFO] [stdout]    |
[INFO] [stdout] 19 |     fn export(&self, w: &mut Write) -> io::Result<()>;
[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] 19 |     fn export(&self, w: &mut dyn Write) -> io::Result<()>;
[INFO] [stdout]    |                              +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/public_key/ed25519.rs:21:40
[INFO] [stdout]    |
[INFO] [stdout] 21 |     fn generate(_: Option<u32>) -> Box<KeyPair> {
[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] 21 |     fn generate(_: Option<u32>) -> Box<dyn KeyPair> {
[INFO] [stdout]    |                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/public_key/ed25519.rs:33:27
[INFO] [stdout]    |
[INFO] [stdout] 33 |     fn import(mut r: &mut Read) -> io::Result<Box<KeyPair>> {
[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] 33 |     fn import(mut r: &mut dyn Read) -> io::Result<Box<KeyPair>> {
[INFO] [stdout]    |                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/public_key/ed25519.rs:33:51
[INFO] [stdout]    |
[INFO] [stdout] 33 |     fn import(mut r: &mut Read) -> io::Result<Box<KeyPair>> {
[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] 33 |     fn import(mut r: &mut Read) -> io::Result<Box<dyn KeyPair>> {
[INFO] [stdout]    |                                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/public_key/ed25519.rs:60:32
[INFO] [stdout]    |
[INFO] [stdout] 60 |     fn read_public(mut r: &mut Read) -> io::Result<Box<KeyPair>> {
[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] 60 |     fn read_public(mut r: &mut dyn Read) -> io::Result<Box<KeyPair>> {
[INFO] [stdout]    |                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/public_key/ed25519.rs:60:56
[INFO] [stdout]    |
[INFO] [stdout] 60 |     fn read_public(mut r: &mut Read) -> io::Result<Box<KeyPair>> {
[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] 60 |     fn read_public(mut r: &mut Read) -> io::Result<Box<dyn KeyPair>> {
[INFO] [stdout]    |                                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/public_key/ed25519.rs:115:36
[INFO] [stdout]     |
[INFO] [stdout] 115 |     fn write_public(&self, w: &mut Write) -> io::Result<()> {
[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] 115 |     fn write_public(&self, w: &mut dyn Write) -> io::Result<()> {
[INFO] [stdout]     |                                    +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/public_key/ed25519.rs:121:30
[INFO] [stdout]     |
[INFO] [stdout] 121 |     fn export(&self, w: &mut Write) -> io::Result<()> {
[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] 121 |     fn export(&self, w: &mut dyn Write) -> io::Result<()> {
[INFO] [stdout]     |                              +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/error.rs:20:53
[INFO] [stdout]    |
[INFO] [stdout] 20 |         write!(f, "connection error: {}", (self as &Error).description())
[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] 20 |         write!(f, "connection error: {}", (self as &dyn Error).description())
[INFO] [stdout]    |                                                     +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/error.rs:20:60
[INFO] [stdout]    |
[INFO] [stdout] 20 |         write!(f, "connection error: {}", (self as &Error).description())
[INFO] [stdout]    |                                                            ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::os::unix::process::CommandExt::before_exec`: should be unsafe, use `pre_exec` instead
[INFO] [stdout]    --> src/channel.rs:146:26
[INFO] [stdout]     |
[INFO] [stdout] 146 |                         .before_exec(|| sys::before_exec())
[INFO] [stdout]     |                          ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/server.rs:46:9
[INFO] [stdout]    |
[INFO] [stdout] 28 | /         loop {
[INFO] [stdout] 29 | |             let (mut stream, addr) = listener.accept()?;
[INFO] [stdout] 30 | |             let config = self.config.clone();
[INFO] [stdout] 31 | |
[INFO] [stdout] ...  |
[INFO] [stdout] 43 | |             });
[INFO] [stdout] 44 | |         }
[INFO] [stdout]    | |_________- any code following this expression is unreachable
[INFO] [stdout] 45 |
[INFO] [stdout] 46 |           Ok(())
[INFO] [stdout]    |           ^^^^^^ unreachable expression
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/connection.rs:63:44
[INFO] [stdout]    |
[INFO] [stdout] 63 |     pub fn run<S: Read + Write>(&mut self, mut stream: &mut S) -> Result<()> {
[INFO] [stdout]    |                                            ----^^^^^^
[INFO] [stdout]    |                                            |
[INFO] [stdout]    |                                            help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `len`
[INFO] [stdout]    --> src/connection.rs:177:43
[INFO] [stdout]     |
[INFO] [stdout] 177 |     fn generate_key(&mut self, id: &[u8], len: usize) -> Result<Vec<u8>> {
[INFO] [stdout]     |                                           ^^^ help: if this is intentional, prefix it with an underscore: `_len`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `packet`
[INFO] [stdout]    --> src/connection.rs:217:28
[INFO] [stdout]     |
[INFO] [stdout] 217 |     fn new_keys(&mut self, packet: Packet) -> Result<Option<Packet>> {
[INFO] [stdout]     |                            ^^^^^^ help: if this is intentional, prefix it with an underscore: `_packet`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `channel_type`
[INFO] [stdout]    --> src/connection.rs:287:13
[INFO] [stdout]     |
[INFO] [stdout] 287 |         let channel_type = reader.read_utf8()?;
[INFO] [stdout]     |             ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_channel_type`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `chan`
[INFO] [stdout]    --> src/connection.rs:292:35
[INFO] [stdout]     |
[INFO] [stdout] 292 |         let id = if let Some((id, chan)) = self.channels.iter().next_back() {
[INFO] [stdout]     |                                   ^^^^ help: if this is intentional, prefix it with an underscore: `_chan`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/connection.rs:337:17
[INFO] [stdout]     |
[INFO] [stdout] 337 |             let mut channel = self.channels.get_mut(&channel_id).unwrap();
[INFO] [stdout]     |                 ----^^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/connection.rs:359:13
[INFO] [stdout]     |
[INFO] [stdout] 359 |         let mut channel = self.channels.get_mut(&channel_id).unwrap();
[INFO] [stdout]     |             ----^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `enc_algos_c2s`
[INFO] [stdout]    --> src/connection.rs:376:17
[INFO] [stdout]     |
[INFO] [stdout] 376 |             let enc_algos_c2s = reader.read_enum_list::<EncryptionAlgorithm>()?;
[INFO] [stdout]     |                 ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_enc_algos_c2s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `mac_algos_c2s`
[INFO] [stdout]    --> src/connection.rs:379:17
[INFO] [stdout]     |
[INFO] [stdout] 379 |             let mac_algos_c2s = reader.read_enum_list::<MacAlgorithm>()?;
[INFO] [stdout]     |                 ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_mac_algos_c2s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `comp_algos_c2s`
[INFO] [stdout]    --> src/connection.rs:382:17
[INFO] [stdout]     |
[INFO] [stdout] 382 |             let comp_algos_c2s = reader
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_comp_algos_c2s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/key_exchange/curve25519.rs:59:21
[INFO] [stdout]    |
[INFO] [stdout] 59 |                     _ => return KexResult::Error,
[INFO] [stdout]    |                     ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Ok` is never constructed
[INFO] [stdout]   --> src/key_exchange/mod.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub enum KexResult {
[INFO] [stdout]    |          --------- variant in this enum
[INFO] [stdout] 11 |     Ok(Packet),
[INFO] [stdout]    |     ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `peer_id`, `process`, and `peer_window_size` are never read
[INFO] [stdout]   --> src/channel.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub struct Channel {
[INFO] [stdout]    |            ------- fields in this struct
[INFO] [stdout] 14 |     id: ChannelId,
[INFO] [stdout] 15 |     peer_id: ChannelId,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 16 |     process: Option<process::Child>,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 20 |     peer_window_size: u32,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Channel` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 54 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.83s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: rustc-serialize v0.3.20
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 3`
[INFO] running `Command { std: "docker" "inspect" "2cf43a4e184857b87a0e54f36ad4f16d20b721682596501b67d00d5dcf620a60", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2cf43a4e184857b87a0e54f36ad4f16d20b721682596501b67d00d5dcf620a60", kill_on_drop: false }`
[INFO] [stdout] 2cf43a4e184857b87a0e54f36ad4f16d20b721682596501b67d00d5dcf620a60
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] cb39ab33b2830eb78c0a83603490f2f25cc4ae2f49779935a94e354d1620a059
[INFO] running `Command { std: "docker" "start" "-a" "cb39ab33b2830eb78c0a83603490f2f25cc4ae2f49779935a94e354d1620a059", kill_on_drop: false }`
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/message.rs:47:15
[INFO] [stderr]    |
[INFO] [stderr] 47 |             30...49 => KeyExchange(id),
[INFO] [stderr]    |               ^^^ help: use `..=` for an inclusive range
[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]    = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/message.rs:52:15
[INFO] [stderr]    |
[INFO] [stderr] 52 |             60...79 => UserAuth(id),
[INFO] [stderr]    |               ^^^ help: use `..=` for an inclusive range
[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] 
[INFO] [stderr] warning: the item `rand` is imported redundantly
[INFO] [stderr]    --> src/connection.rs:406:20
[INFO] [stderr]     |
[INFO] [stderr] 406 |         use rand::{self, Rng};
[INFO] [stderr]     |                    ^^^^
[INFO] [stderr]     |
[INFO] [stderr]    ::: src/lib.rs:2:1
[INFO] [stderr]     |
[INFO] [stderr] 2   | extern crate rand;
[INFO] [stderr]     | ------------------ the item `rand` is already imported here
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the item `libc` is imported redundantly
[INFO] [stderr]   --> src/sys/unix.rs:6:9
[INFO] [stderr]    |
[INFO] [stderr] 6  |     use libc;
[INFO] [stderr]    |         ^^^^
[INFO] [stderr]    |
[INFO] [stderr]   ::: src/lib.rs:10:1
[INFO] [stderr]    |
[INFO] [stderr] 10 | extern crate libc;
[INFO] [stderr]    | ------------------ the item `libc` is already imported here
[INFO] [stderr] 
[INFO] [stderr] warning: the item `libc` is imported redundantly
[INFO] [stderr]   --> src/sys/unix.rs:15:9
[INFO] [stderr]    |
[INFO] [stderr] 15 |     use libc;
[INFO] [stderr]    |         ^^^^
[INFO] [stderr]    |
[INFO] [stderr]   ::: src/lib.rs:10:1
[INFO] [stderr]    |
[INFO] [stderr] 10 | extern crate libc;
[INFO] [stderr]    | ------------------ the item `libc` is already imported here
[INFO] [stderr] 
[INFO] [stderr] warning: the item `libc` is imported redundantly
[INFO] [stderr]   --> src/sys/unix.rs:20:9
[INFO] [stderr]    |
[INFO] [stderr] 20 |     use libc;
[INFO] [stderr]    |         ^^^^
[INFO] [stderr]    |
[INFO] [stderr]   ::: src/lib.rs:10:1
[INFO] [stderr]    |
[INFO] [stderr] 10 | extern crate libc;
[INFO] [stderr]    | ------------------ the item `libc` is already imported here
[INFO] [stderr] 
[INFO] [stderr] warning: the item `libc` is imported redundantly
[INFO] [stderr]   --> src/sys/unix.rs:33:9
[INFO] [stderr]    |
[INFO] [stderr] 33 |     use libc;
[INFO] [stderr]    |         ^^^^
[INFO] [stderr]    |
[INFO] [stderr]   ::: src/lib.rs:10:1
[INFO] [stderr]    |
[INFO] [stderr] 10 | extern crate libc;
[INFO] [stderr]    | ------------------ the item `libc` is already imported here
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/connection.rs:38:30
[INFO] [stderr]    |
[INFO] [stderr] 38 |     key_exchange: Option<Box<KeyExchange>>,
[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]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 38 |     key_exchange: Option<Box<dyn KeyExchange>>,
[INFO] [stderr]    |                              +++
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/connection.rs:40:29
[INFO] [stderr]    |
[INFO] [stderr] 40 |     encryption: Option<(Box<Encryption>, Box<Encryption>)>,
[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] 40 |     encryption: Option<(Box<dyn Encryption>, Box<Encryption>)>,
[INFO] [stderr]    |                             +++
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/connection.rs:40:46
[INFO] [stderr]    |
[INFO] [stderr] 40 |     encryption: Option<(Box<Encryption>, Box<Encryption>)>,
[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] 40 |     encryption: Option<(Box<Encryption>, Box<dyn Encryption>)>,
[INFO] [stderr]    |                                              +++
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/connection.rs:41:22
[INFO] [stderr]    |
[INFO] [stderr] 41 |     mac: Option<(Box<MacAlgorithm>, Box<MacAlgorithm>)>,
[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] 41 |     mac: Option<(Box<dyn MacAlgorithm>, Box<MacAlgorithm>)>,
[INFO] [stderr]    |                      +++
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/connection.rs:41:41
[INFO] [stderr]    |
[INFO] [stderr] 41 |     mac: Option<(Box<MacAlgorithm>, Box<MacAlgorithm>)>,
[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] 41 |     mac: Option<(Box<MacAlgorithm>, Box<dyn MacAlgorithm>)>,
[INFO] [stderr]    |                                         +++
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/encryption/aes_ctr.rs:7:17
[INFO] [stderr]   |
[INFO] [stderr] 7 |     cipher: Box<SynchronousStreamCipher + 'static>,
[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] 7 |     cipher: Box<dyn SynchronousStreamCipher + 'static>,
[INFO] [stderr]   |                 +++
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/encryption/mod.rs:13:25
[INFO] [stderr]    |
[INFO] [stderr] 13 |     encryption: &'a mut Encryption,
[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] 13 |     encryption: &'a mut dyn Encryption,
[INFO] [stderr]    |                         +++
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/encryption/mod.rs:14:21
[INFO] [stderr]    |
[INFO] [stderr] 14 |     stream: &'a mut Read,
[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] 14 |     stream: &'a mut dyn Read,
[INFO] [stderr]    |                     +++
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/public_key/mod.rs:24:57
[INFO] [stderr]    |
[INFO] [stderr] 24 |     pub generate_key_pair: fn(bits: Option<u32>) -> Box<KeyPair>,
[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] 24 |     pub generate_key_pair: fn(bits: Option<u32>) -> Box<dyn KeyPair>,
[INFO] [stderr]    |                                                         +++
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/public_key/mod.rs:25:28
[INFO] [stderr]    |
[INFO] [stderr] 25 |     pub import: fn(r: &mut Read) -> io::Result<Box<KeyPair>>,
[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] 25 |     pub import: fn(r: &mut dyn Read) -> io::Result<Box<KeyPair>>,
[INFO] [stderr]    |                            +++
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/public_key/mod.rs:25:52
[INFO] [stderr]    |
[INFO] [stderr] 25 |     pub import: fn(r: &mut Read) -> io::Result<Box<KeyPair>>,
[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] 25 |     pub import: fn(r: &mut Read) -> io::Result<Box<dyn KeyPair>>,
[INFO] [stderr]    |                                                    +++
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/public_key/mod.rs:26:33
[INFO] [stderr]    |
[INFO] [stderr] 26 |     pub read_public: fn(r: &mut Read) -> io::Result<Box<KeyPair>>,
[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] 26 |     pub read_public: fn(r: &mut dyn Read) -> io::Result<Box<KeyPair>>,
[INFO] [stderr]    |                                 +++
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/public_key/mod.rs:26:57
[INFO] [stderr]    |
[INFO] [stderr] 26 |     pub read_public: fn(r: &mut Read) -> io::Result<Box<KeyPair>>,
[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] 26 |     pub read_public: fn(r: &mut Read) -> io::Result<Box<dyn KeyPair>>,
[INFO] [stderr]    |                                                         +++
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/server.rs:12:18
[INFO] [stderr]    |
[INFO] [stderr] 12 |     pub key: Box<KeyPair>,
[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] 12 |     pub key: Box<dyn KeyPair>,
[INFO] [stderr]    |                  +++
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/algorithm.rs:60:42
[INFO] [stderr]    |
[INFO] [stderr] 60 |     pub fn instance(&self) -> Option<Box<KeyExchange>> {
[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] 60 |     pub fn instance(&self) -> Option<Box<dyn KeyExchange>> {
[INFO] [stderr]    |                                          +++
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/connection.rs:87:41
[INFO] [stderr]    |
[INFO] [stderr] 87 |     fn recv(&mut self, mut stream: &mut Read) -> Result<Packet> {
[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] 87 |     fn recv(&mut self, mut stream: &mut dyn Read) -> Result<Packet> {
[INFO] [stderr]    |                                         +++
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout] 
[INFO] [stderr]    --> src/connection.rs:116:41
[INFO] [stdout] running 0 tests
[INFO] [stderr]     |
[INFO] [stdout] 
[INFO] [stderr] 116 |     fn send(&mut self, mut stream: &mut Write, packet: Packet)
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr]     |                                         ^^^^^
[INFO] [stdout] 
[INFO] [stderr]     |
[INFO] [stdout] 
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout] running 0 tests
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stderr] help: use `dyn`
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr]     |
[INFO] [stdout] 
[INFO] [stderr] 116 |     fn send(&mut self, mut stream: &mut dyn Write, packet: Packet)
[INFO] [stderr]     |                                         +++
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/connection.rs:144:40
[INFO] [stderr]     |
[INFO] [stderr] 144 |     fn send_id(&mut self, stream: &mut Write) -> io::Result<()> {
[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] 144 |     fn send_id(&mut self, stream: &mut dyn Write) -> io::Result<()> {
[INFO] [stderr]     |                                        +++
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/connection.rs:157:40
[INFO] [stderr]     |
[INFO] [stderr] 157 |     fn read_id(&mut self, stream: &mut Read) -> io::Result<()> {
[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] 157 |     fn read_id(&mut self, stream: &mut dyn Read) -> io::Result<()> {
[INFO] [stderr]     |                                        +++
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/encryption/mod.rs:18:36
[INFO] [stderr]    |
[INFO] [stderr] 18 |     pub fn new(encryption: &'a mut Encryption, stream: &'a mut Read)
[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] 18 |     pub fn new(encryption: &'a mut dyn Encryption, stream: &'a mut Read)
[INFO] [stderr]    |                                    +++
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/encryption/mod.rs:18:64
[INFO] [stderr]    |
[INFO] [stderr] 18 |     pub fn new(encryption: &'a mut Encryption, stream: &'a mut Read)
[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] 18 |     pub fn new(encryption: &'a mut Encryption, stream: &'a mut dyn Read)
[INFO] [stderr]    |                                                                +++
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/public_key/mod.rs:18:36
[INFO] [stderr]    |
[INFO] [stderr] 18 |     fn write_public(&self, w: &mut Write) -> io::Result<()>;
[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] 18 |     fn write_public(&self, w: &mut dyn Write) -> io::Result<()>;
[INFO] [stderr]    |                                    +++
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/public_key/mod.rs:19:30
[INFO] [stderr]    |
[INFO] [stderr] 19 |     fn export(&self, w: &mut Write) -> io::Result<()>;
[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] 19 |     fn export(&self, w: &mut dyn Write) -> io::Result<()>;
[INFO] [stderr]    |                              +++
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/public_key/ed25519.rs:21:40
[INFO] [stderr]    |
[INFO] [stderr] 21 |     fn generate(_: Option<u32>) -> Box<KeyPair> {
[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] 21 |     fn generate(_: Option<u32>) -> Box<dyn KeyPair> {
[INFO] [stderr]    |                                        +++
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/public_key/ed25519.rs:33:27
[INFO] [stderr]    |
[INFO] [stderr] 33 |     fn import(mut r: &mut Read) -> io::Result<Box<KeyPair>> {
[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] 33 |     fn import(mut r: &mut dyn Read) -> io::Result<Box<KeyPair>> {
[INFO] [stderr]    |                           +++
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/public_key/ed25519.rs:33:51
[INFO] [stderr]    |
[INFO] [stderr] 33 |     fn import(mut r: &mut Read) -> io::Result<Box<KeyPair>> {
[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] 33 |     fn import(mut r: &mut Read) -> io::Result<Box<dyn KeyPair>> {
[INFO] [stderr]    |                                                   +++
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/public_key/ed25519.rs:60:32
[INFO] [stderr]    |
[INFO] [stderr] 60 |     fn read_public(mut r: &mut Read) -> io::Result<Box<KeyPair>> {
[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] 60 |     fn read_public(mut r: &mut dyn Read) -> io::Result<Box<KeyPair>> {
[INFO] [stderr]    |                                +++
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/public_key/ed25519.rs:60:56
[INFO] [stderr]    |
[INFO] [stderr] 60 |     fn read_public(mut r: &mut Read) -> io::Result<Box<KeyPair>> {
[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] 60 |     fn read_public(mut r: &mut Read) -> io::Result<Box<dyn KeyPair>> {
[INFO] [stderr]    |                                                        +++
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/public_key/ed25519.rs:115:36
[INFO] [stderr]     |
[INFO] [stderr] 115 |     fn write_public(&self, w: &mut Write) -> io::Result<()> {
[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] 115 |     fn write_public(&self, w: &mut dyn Write) -> io::Result<()> {
[INFO] [stderr]     |                                    +++
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/public_key/ed25519.rs:121:30
[INFO] [stderr]     |
[INFO] [stderr] 121 |     fn export(&self, w: &mut Write) -> io::Result<()> {
[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] 121 |     fn export(&self, w: &mut dyn Write) -> io::Result<()> {
[INFO] [stderr]     |                              +++
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/error.rs:20:53
[INFO] [stderr]    |
[INFO] [stderr] 20 |         write!(f, "connection error: {}", (self as &Error).description())
[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] 20 |         write!(f, "connection error: {}", (self as &dyn Error).description())
[INFO] [stderr]    |                                                     +++
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stderr]   --> src/error.rs:20:60
[INFO] [stderr]    |
[INFO] [stderr] 20 |         write!(f, "connection error: {}", (self as &Error).description())
[INFO] [stderr]    |                                                            ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated method `std::os::unix::process::CommandExt::before_exec`: should be unsafe, use `pre_exec` instead
[INFO] [stderr]    --> src/channel.rs:146:26
[INFO] [stderr]     |
[INFO] [stderr] 146 |                         .before_exec(|| sys::before_exec())
[INFO] [stderr]     |                          ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable expression
[INFO] [stderr]   --> src/server.rs:46:9
[INFO] [stderr]    |
[INFO] [stderr] 28 | /         loop {
[INFO] [stderr] 29 | |             let (mut stream, addr) = listener.accept()?;
[INFO] [stderr] 30 | |             let config = self.config.clone();
[INFO] [stderr] 31 | |
[INFO] [stderr] ...  |
[INFO] [stderr] 43 | |             });
[INFO] [stderr] 44 | |         }
[INFO] [stderr]    | |_________- any code following this expression is unreachable
[INFO] [stderr] 45 |
[INFO] [stderr] 46 |           Ok(())
[INFO] [stderr]    |           ^^^^^^ unreachable expression
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/connection.rs:63:44
[INFO] [stderr]    |
[INFO] [stderr] 63 |     pub fn run<S: Read + Write>(&mut self, mut stream: &mut S) -> Result<()> {
[INFO] [stderr]    |                                            ----^^^^^^
[INFO] [stderr]    |                                            |
[INFO] [stderr]    |                                            help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `len`
[INFO] [stderr]    --> src/connection.rs:177:43
[INFO] [stderr]     |
[INFO] [stderr] 177 |     fn generate_key(&mut self, id: &[u8], len: usize) -> Result<Vec<u8>> {
[INFO] [stderr]     |                                           ^^^ help: if this is intentional, prefix it with an underscore: `_len`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `packet`
[INFO] [stderr]    --> src/connection.rs:217:28
[INFO] [stderr]     |
[INFO] [stderr] 217 |     fn new_keys(&mut self, packet: Packet) -> Result<Option<Packet>> {
[INFO] [stderr]     |                            ^^^^^^ help: if this is intentional, prefix it with an underscore: `_packet`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `channel_type`
[INFO] [stderr]    --> src/connection.rs:287:13
[INFO] [stderr]     |
[INFO] [stderr] 287 |         let channel_type = reader.read_utf8()?;
[INFO] [stderr]     |             ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_channel_type`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `chan`
[INFO] [stderr]    --> src/connection.rs:292:35
[INFO] [stderr]     |
[INFO] [stderr] 292 |         let id = if let Some((id, chan)) = self.channels.iter().next_back() {
[INFO] [stderr]     |                                   ^^^^ help: if this is intentional, prefix it with an underscore: `_chan`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/connection.rs:337:17
[INFO] [stderr]     |
[INFO] [stderr] 337 |             let mut channel = self.channels.get_mut(&channel_id).unwrap();
[INFO] [stderr]     |                 ----^^^^^^^
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/connection.rs:359:13
[INFO] [stderr]     |
[INFO] [stderr] 359 |         let mut channel = self.channels.get_mut(&channel_id).unwrap();
[INFO] [stderr]     |             ----^^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `enc_algos_c2s`
[INFO] [stderr]    --> src/connection.rs:376:17
[INFO] [stderr]     |
[INFO] [stderr] 376 |             let enc_algos_c2s = reader.read_enum_list::<EncryptionAlgorithm>()?;
[INFO] [stderr]     |                 ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_enc_algos_c2s`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `mac_algos_c2s`
[INFO] [stderr]    --> src/connection.rs:379:17
[INFO] [stderr]     |
[INFO] [stderr] 379 |             let mac_algos_c2s = reader.read_enum_list::<MacAlgorithm>()?;
[INFO] [stderr]     |                 ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_mac_algos_c2s`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `comp_algos_c2s`
[INFO] [stderr]    --> src/connection.rs:382:17
[INFO] [stderr]     |
[INFO] [stderr] 382 |             let comp_algos_c2s = reader
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_comp_algos_c2s`
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]   --> src/key_exchange/curve25519.rs:59:21
[INFO] [stderr]    |
[INFO] [stderr] 59 |                     _ => return KexResult::Error,
[INFO] [stderr]    |                     ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant `Ok` is never constructed
[INFO] [stderr]   --> src/key_exchange/mod.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 10 | pub enum KexResult {
[INFO] [stderr]    |          --------- variant in this enum
[INFO] [stderr] 11 |     Ok(Packet),
[INFO] [stderr]    |     ^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: fields `peer_id`, `process`, and `peer_window_size` are never read
[INFO] [stderr]   --> src/channel.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 13 | pub struct Channel {
[INFO] [stderr]    |            ------- fields in this struct
[INFO] [stderr] 14 |     id: ChannelId,
[INFO] [stderr] 15 |     peer_id: ChannelId,
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr] 16 |     process: Option<process::Child>,
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 20 |     peer_window_size: u32,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `Channel` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: `redox-ssh` (lib) generated 54 warnings (run `cargo fix --lib -p redox-ssh` to apply 43 suggestions)
[INFO] [stderr] warning: `redox-ssh` (lib test) generated 54 warnings (54 duplicates)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> tests/public_key.rs:9:37
[INFO] [stderr]   |
[INFO] [stderr] 9 | fn test_export_import(keypair: &Box<KeyPair>) -> Box<KeyPair> {
[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]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]   |
[INFO] [stderr] 9 | fn test_export_import(keypair: &Box<dyn KeyPair>) -> Box<KeyPair> {
[INFO] [stderr]   |                                     +++
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> tests/public_key.rs:9:54
[INFO] [stderr]   |
[INFO] [stderr] 9 | fn test_export_import(keypair: &Box<KeyPair>) -> Box<KeyPair> {
[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] 9 | fn test_export_import(keypair: &Box<KeyPair>) -> Box<dyn KeyPair> {
[INFO] [stderr]   |                                                      +++
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]  --> src/bin/ssh-keygen.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     keypair.export(&mut buffer);
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]   = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]   |
[INFO] [stderr] 9 |     let _ = keypair.export(&mut buffer);
[INFO] [stderr]   |     +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: `redox-ssh` (test "public_key") generated 2 warnings (run `cargo fix --test "public_key"` to apply 2 suggestions)
[INFO] [stderr] warning: `redox-ssh` (bin "ssh-keygen") generated 1 warning
[INFO] [stderr] warning: `redox-ssh` (bin "ssh-keygen" test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: rustc-serialize v0.3.20
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 3`
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/ssh-eebef7603e9ab46d)
[INFO] [stderr]      Running unittests src/bin/ssh.rs (/opt/rustwide/target/debug/deps/ssh-74452e7e9a20b285)
[INFO] [stderr]      Running unittests src/bin/ssh-keygen.rs (/opt/rustwide/target/debug/deps/ssh_keygen-19cc682c316cd5b7)
[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 src/bin/sshd.rs (/opt/rustwide/target/debug/deps/sshd-41a38b9f792afa8b)
[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 tests/public_key.rs (/opt/rustwide/target/debug/deps/public_key-135a774acea9c067)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test test_ed25519 ... ok
[INFO] [stderr]    Doc-tests ssh
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/message.rs:47:15
[INFO] [stderr]    |
[INFO] [stderr] 47 |             30...49 => KeyExchange(id),
[INFO] [stderr]    |               ^^^ help: use `..=` for an inclusive range
[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]    = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/message.rs:52:15
[INFO] [stderr]    |
[INFO] [stderr] 52 |             60...79 => UserAuth(id),
[INFO] [stderr]    |               ^^^ help: use `..=` for an inclusive range
[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] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[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" "cb39ab33b2830eb78c0a83603490f2f25cc4ae2f49779935a94e354d1620a059", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cb39ab33b2830eb78c0a83603490f2f25cc4ae2f49779935a94e354d1620a059", kill_on_drop: false }`
[INFO] [stdout] cb39ab33b2830eb78c0a83603490f2f25cc4ae2f49779935a94e354d1620a059
