[INFO] crate rotor 0.6.3 is already in cache
[INFO] testing rotor-0.6.3 against try#03a1ea71b075ab964b5278bc6e74cd6c52c36ee0 for pr-74409
[INFO] extracting crate rotor 0.6.3 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate rotor 0.6.3 on toolchain 03a1ea71b075ab964b5278bc6e74cd6c52c36ee0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rotor 0.6.3
[INFO] finished tweaking crates.io crate rotor 0.6.3
[INFO] tweaked toml for crates.io crate rotor 0.6.3 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d00b76ba7ce6fb4bdc9935c8592265d8f8caf15aee0a40b4a9e1a30a64a50dd0
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "d00b76ba7ce6fb4bdc9935c8592265d8f8caf15aee0a40b4a9e1a30a64a50dd0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d00b76ba7ce6fb4bdc9935c8592265d8f8caf15aee0a40b4a9e1a30a64a50dd0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d00b76ba7ce6fb4bdc9935c8592265d8f8caf15aee0a40b4a9e1a30a64a50dd0", kill_on_drop: false }`
[INFO] [stdout] d00b76ba7ce6fb4bdc9935c8592265d8f8caf15aee0a40b4a9e1a30a64a50dd0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9d248f1a3783aaa2a9c067e5cd9c6cdb51240cfceffb64715d1fd5b4d702b9a5
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "9d248f1a3783aaa2a9c067e5cd9c6cdb51240cfceffb64715d1fd5b4d702b9a5", kill_on_drop: false }`
[INFO] [stderr]    Compiling net2 v0.2.34
[INFO] [stderr]    Compiling miow v0.1.5
[INFO] [stderr]    Compiling mio v0.5.1
[INFO] [stderr]    Compiling rotor v0.6.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/creator.rs:74:21
[INFO] [stdout]    |
[INFO] [stdout] 74 |         let eloop = try!(create_loop(&cfg));
[INFO] [stdout]    |                     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/scope.rs:37:23
[INFO] [stdout]    |
[INFO] [stdout] 37 |     loop_api: &'a mut LoopApi,
[INFO] [stdout]    |                       ^^^^^^^ help: use `dyn`: `dyn LoopApi`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/scope.rs:50:23
[INFO] [stdout]    |
[INFO] [stdout] 50 |     loop_api: &'a mut LoopApi,
[INFO] [stdout]    |                       ^^^^^^^ help: use `dyn`: `dyn LoopApi`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/scope.rs:59:33
[INFO] [stdout]    |
[INFO] [stdout] 59 |     fn register(&mut self, io: &Evented, interest: EventSet, opt: PollOpt)
[INFO] [stdout]    |                                 ^^^^^^^ help: use `dyn`: `dyn Evented`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/scope.rs:61:35
[INFO] [stdout]    |
[INFO] [stdout] 61 |     fn reregister(&mut self, io: &Evented,
[INFO] [stdout]    |                                   ^^^^^^^ help: use `dyn`: `dyn Evented`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/scope.rs:64:35
[INFO] [stdout]    |
[INFO] [stdout] 64 |     fn deregister(&mut self, io: &Evented) -> io::Result<()>;
[INFO] [stdout]    |                                   ^^^^^^^ help: use `dyn`: `dyn Evented`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/scope.rs:100:37
[INFO] [stdout]     |
[INFO] [stdout] 100 |     pub fn register(&mut self, io: &Evented, interest: EventSet, opt: PollOpt)
[INFO] [stdout]     |                                     ^^^^^^^ help: use `dyn`: `dyn Evented`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/scope.rs:106:39
[INFO] [stdout]     |
[INFO] [stdout] 106 |     pub fn reregister(&mut self, io: &Evented,
[INFO] [stdout]     |                                       ^^^^^^^ help: use `dyn`: `dyn Evented`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/scope.rs:113:39
[INFO] [stdout]     |
[INFO] [stdout] 113 |     pub fn deregister(&mut self, io: &Evented) -> io::Result<()>
[INFO] [stdout]     |                                       ^^^^^^^ help: use `dyn`: `dyn Evented`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/scope.rs:167:33
[INFO] [stdout]     |
[INFO] [stdout] 167 |     fn register(&mut self, io: &Evented, interest: EventSet, opt: PollOpt)
[INFO] [stdout]     |                                 ^^^^^^^ help: use `dyn`: `dyn Evented`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/scope.rs:173:35
[INFO] [stdout]     |
[INFO] [stdout] 173 |     fn reregister(&mut self, io: &Evented,
[INFO] [stdout]     |                                   ^^^^^^^ help: use `dyn`: `dyn Evented`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/scope.rs:180:35
[INFO] [stdout]     |
[INFO] [stdout] 180 |     fn deregister(&mut self, io: &Evented) -> io::Result<()>
[INFO] [stdout]     |                                   ^^^^^^^ help: use `dyn`: `dyn Evented`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/scope.rs:231:37
[INFO] [stdout]     |
[INFO] [stdout] 231 |     pub fn register(&mut self, io: &Evented, interest: EventSet, opt: PollOpt)
[INFO] [stdout]     |                                     ^^^^^^^ help: use `dyn`: `dyn Evented`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/scope.rs:237:39
[INFO] [stdout]     |
[INFO] [stdout] 237 |     pub fn reregister(&mut self, io: &Evented,
[INFO] [stdout]     |                                       ^^^^^^^ help: use `dyn`: `dyn Evented`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/scope.rs:244:39
[INFO] [stdout]     |
[INFO] [stdout] 244 |     pub fn deregister(&mut self, io: &Evented) -> io::Result<()>
[INFO] [stdout]     |                                       ^^^^^^^ help: use `dyn`: `dyn Evented`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/scope.rs:295:33
[INFO] [stdout]     |
[INFO] [stdout] 295 |     fn register(&mut self, io: &Evented, interest: EventSet, opt: PollOpt)
[INFO] [stdout]     |                                 ^^^^^^^ help: use `dyn`: `dyn Evented`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/scope.rs:301:35
[INFO] [stdout]     |
[INFO] [stdout] 301 |     fn reregister(&mut self, io: &Evented,
[INFO] [stdout]     |                                   ^^^^^^^ help: use `dyn`: `dyn Evented`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/scope.rs:308:35
[INFO] [stdout]     |
[INFO] [stdout] 308 |     fn deregister(&mut self, io: &Evented) -> io::Result<()>
[INFO] [stdout]     |                                   ^^^^^^^ help: use `dyn`: `dyn Evented`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/loop_api.rs:12:33
[INFO] [stdout]    |
[INFO] [stdout] 12 |     fn register(&mut self, io: &Evented, token: Token,
[INFO] [stdout]    |                                 ^^^^^^^ help: use `dyn`: `dyn Evented`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/loop_api.rs:14:35
[INFO] [stdout]    |
[INFO] [stdout] 14 |     fn reregister(&mut self, io: &Evented, token: Token,
[INFO] [stdout]    |                                   ^^^^^^^ help: use `dyn`: `dyn Evented`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/loop_api.rs:16:35
[INFO] [stdout]    |
[INFO] [stdout] 16 |     fn deregister(&mut self, io: &Evented) -> io::Result<()>;
[INFO] [stdout]    |                                   ^^^^^^^ help: use `dyn`: `dyn Evented`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/loop_api.rs:25:33
[INFO] [stdout]    |
[INFO] [stdout] 25 |     fn register(&mut self, io: &Evented, token: Token,
[INFO] [stdout]    |                                 ^^^^^^^ help: use `dyn`: `dyn Evented`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/loop_api.rs:31:35
[INFO] [stdout]    |
[INFO] [stdout] 31 |     fn reregister(&mut self, io: &Evented, token: Token,
[INFO] [stdout]    |                                   ^^^^^^^ help: use `dyn`: `dyn Evented`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/loop_api.rs:37:35
[INFO] [stdout]    |
[INFO] [stdout] 37 |     fn deregister(&mut self, io: &Evented) -> io::Result<()>
[INFO] [stdout]    |                                   ^^^^^^^ help: use `dyn`: `dyn Evented`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/response.rs:14:15
[INFO] [stdout]    |
[INFO] [stdout] 14 |     Error(Box<Error>),
[INFO] [stdout]    |               ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/response.rs:28:25
[INFO] [stdout]    |
[INFO] [stdout] 28 |     pub fn error(e: Box<Error>) -> Response<M, N> {
[INFO] [stdout]    |                         ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/response.rs:109:36
[INFO] [stdout]     |
[INFO] [stdout] 109 |     pub fn cause(&self) -> Option<&Error> {
[INFO] [stdout]     |                                    ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/response.rs:164:38
[INFO] [stdout]     |
[INFO] [stdout] 164 |     pub fn expect_error(self) -> Box<Error> {
[INFO] [stdout]     |                                      ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/response.rs:174:30
[INFO] [stdout]     |
[INFO] [stdout] 174 |     -> (Result<M, Option<Box<Error>>>, Option<N>, Option<Time>)
[INFO] [stdout]     |                              ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `scope`
[INFO] [stdout]  --> src/creator.rs:9:38
[INFO] [stdout]   |
[INFO] [stdout] 9 | use scope::{early_scope, EarlyScope, scope, Scope};
[INFO] [stdout]   |                                      ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/error.rs:15:19
[INFO] [stdout]    |
[INFO] [stdout] 15 |     UserError(Box<Error>),
[INFO] [stdout]    |                   ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/error.rs:40:36
[INFO] [stdout]    |
[INFO] [stdout] 40 |     pub fn cause(&self) -> Option<&Error> {
[INFO] [stdout]    |                                    ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/error.rs:59:32
[INFO] [stdout]    |
[INFO] [stdout] 59 |     fn cause(&self) -> Option<&Error> {
[INFO] [stdout]    |                                ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/error.rs:64:18
[INFO] [stdout]    |
[INFO] [stdout] 64 | impl<S> From<Box<Error>> for SpawnError<S> {
[INFO] [stdout]    |                  ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/error.rs:65:20
[INFO] [stdout]    |
[INFO] [stdout] 65 |     fn from(x: Box<Error>) -> SpawnError<S> {
[INFO] [stdout]    |                    ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: extern crate `mio_original` is private, and cannot be re-exported (error E0365), consider declaring with `pub`
[INFO] [stdout]   --> src/lib.rs:42:9
[INFO] [stdout]    |
[INFO] [stdout] 42 | pub use mio_original as mio;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[deny(pub_use_of_private_extern_crate)]` on by default
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: extern crate `void_original` is private, and cannot be re-exported (error E0365), consider declaring with `pub`
[INFO] [stdout]   --> src/lib.rs:45:9
[INFO] [stdout]    |
[INFO] [stdout] 45 | pub use void_original as void;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stdout]   --> src/notify.rs:5:1
[INFO] [stdout]    |
[INFO] [stdout] 5  | / quick_error! {
[INFO] [stdout] 6  | |     /// Error when waking up a connection
[INFO] [stdout] 7  | |     ///
[INFO] [stdout] 8  | |     /// In most cases it's okay to panic on this error
[INFO] [stdout] ...  |
[INFO] [stdout] 28 | |     }
[INFO] [stdout] 29 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stdout]   --> src/notify.rs:5:1
[INFO] [stdout]    |
[INFO] [stdout] 5  | / quick_error! {
[INFO] [stdout] 6  | |     /// Error when waking up a connection
[INFO] [stdout] 7  | |     ///
[INFO] [stdout] 8  | |     /// In most cases it's okay to panic on this error
[INFO] [stdout] ...  |
[INFO] [stdout] 28 | |     }
[INFO] [stdout] 29 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stdout]   --> src/notify.rs:5:1
[INFO] [stdout]    |
[INFO] [stdout] 5  | / quick_error! {
[INFO] [stdout] 6  | |     /// Error when waking up a connection
[INFO] [stdout] 7  | |     ///
[INFO] [stdout] 8  | |     /// In most cases it's okay to panic on this error
[INFO] [stdout] ...  |
[INFO] [stdout] 28 | |     }
[INFO] [stdout] 29 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stdout]   --> src/error.rs:37:40
[INFO] [stdout]    |
[INFO] [stdout] 37 |             &UserError(ref err) => err.description(),
[INFO] [stdout]    |                                        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors; 39 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rotor`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "9d248f1a3783aaa2a9c067e5cd9c6cdb51240cfceffb64715d1fd5b4d702b9a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9d248f1a3783aaa2a9c067e5cd9c6cdb51240cfceffb64715d1fd5b4d702b9a5", kill_on_drop: false }`
[INFO] [stdout] 9d248f1a3783aaa2a9c067e5cd9c6cdb51240cfceffb64715d1fd5b4d702b9a5