[INFO] fetching crate rotor-stream 0.6.2...
[INFO] checking rotor-stream-0.6.2 against master#3e826bb11228508fbe749e594038d6727208aa94 for pr-82322
[INFO] extracting crate rotor-stream 0.6.2 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate rotor-stream 0.6.2 on toolchain 3e826bb11228508fbe749e594038d6727208aa94
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e826bb11228508fbe749e594038d6727208aa94" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-8/source/.cargo/config
[INFO] started tweaking crates.io crate rotor-stream 0.6.2
[INFO] finished tweaking crates.io crate rotor-stream 0.6.2
[INFO] tweaked toml for crates.io crate rotor-stream 0.6.2 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e826bb11228508fbe749e594038d6727208aa94" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e826bb11228508fbe749e594038d6727208aa94" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+3e826bb11228508fbe749e594038d6727208aa94" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] db3bf284050001d1d091df1c1f01f7f086e2a11d9f0b1608947aaea3dcb905a5
[INFO] running `Command { std: "docker" "start" "-a" "db3bf284050001d1d091df1c1f01f7f086e2a11d9f0b1608947aaea3dcb905a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "db3bf284050001d1d091df1c1f01f7f086e2a11d9f0b1608947aaea3dcb905a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "db3bf284050001d1d091df1c1f01f7f086e2a11d9f0b1608947aaea3dcb905a5", kill_on_drop: false }`
[INFO] [stdout] db3bf284050001d1d091df1c1f01f7f086e2a11d9f0b1608947aaea3dcb905a5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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=forbid" "-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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+3e826bb11228508fbe749e594038d6727208aa94" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 3e3796c35d12e9f20a15defd7dfdae5b385c6fa5a79a1b7434844773938c00e8
[INFO] running `Command { std: "docker" "start" "-a" "3e3796c35d12e9f20a15defd7dfdae5b385c6fa5a79a1b7434844773938c00e8", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking slab v0.1.3
[INFO] [stderr]     Checking bytes v0.3.0
[INFO] [stderr]     Checking quick-error v0.2.2
[INFO] [stderr]    Compiling httparse v1.3.5
[INFO] [stderr]     Checking bitflags v0.3.3
[INFO] [stderr]     Checking libc v0.1.12
[INFO] [stderr]     Checking netbuf v0.3.8
[INFO] [stderr]     Checking argparse v0.2.2
[INFO] [stderr]    Compiling ws2_32-sys v0.2.1
[INFO] [stderr]     Checking net2 v0.2.37
[INFO] [stderr]     Checking nix v0.5.1
[INFO] [stderr]     Checking memchr v0.1.11
[INFO] [stderr]     Checking thread-id v2.0.0
[INFO] [stderr]     Checking log v0.4.14
[INFO] [stderr]     Checking thread_local v0.2.7
[INFO] [stderr]     Checking aho-corasick v0.5.3
[INFO] [stderr]     Checking nix v0.4.3
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]     Checking regex v0.1.80
[INFO] [stderr]     Checking miow v0.1.5
[INFO] [stderr]     Checking env_logger v0.3.5
[INFO] [stderr]     Checking mio v0.5.1
[INFO] [stderr]     Checking rotor v0.6.3
[INFO] [stderr]     Checking rotor-tools v0.3.2
[INFO] [stderr]     Checking rotor-stream v0.6.2 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0423]: expected function, tuple struct or tuple variant, found struct `Persistent`
[INFO] [stdout]    --> src/persistent.rs:242:13
[INFO] [stdout]     |
[INFO] [stdout] 242 |             Persistent(self.0.clone(), self.1.clone(), Fsm::Idle)
[INFO] [stdout]     |             ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/protocol.rs:163:23
[INFO] [stdout]     |
[INFO] [stdout] 163 |         -> Option<Box<Error>>;
[INFO] [stdout]     |                       ^^^^^ help: use `dyn`: `dyn Error`
[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/stream.rs:24:58
[INFO] [stdout]    |
[INFO] [stdout] 24 |     -> Result<(P, Expectation, Option<Time>), Option<Box<Error>>>
[INFO] [stdout]    |                                                          ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/stream.rs:60:26
[INFO] [stdout]    |
[INFO] [stdout] 60 |         let mut intent = try!(to_result(intent));
[INFO] [stdout]    |                          ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/stream.rs:101:38
[INFO] [stdout]     |
[INFO] [stdout] 101 | ...                   intent = try!(to_result(intent.0.bytes_read(
[INFO] [stdout]     |                                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/stream.rs:112:42
[INFO] [stdout]     |
[INFO] [stdout] 112 | ...                   intent = try!(to_result(intent.0.exception(
[INFO] [stdout]     |                                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/stream.rs:119:42
[INFO] [stdout]     |
[INFO] [stdout] 119 | ...                   intent = try!(to_result(intent.0.exception(
[INFO] [stdout]     |                                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/stream.rs:133:42
[INFO] [stdout]     |
[INFO] [stdout] 133 | ...                   intent = try!(to_result(intent.0.bytes_read(
[INFO] [stdout]     |                                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/stream.rs:140:38
[INFO] [stdout]     |
[INFO] [stdout] 140 | ...                   intent = try!(to_result(intent.0.exception(
[INFO] [stdout]     |                                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/stream.rs:152:42
[INFO] [stdout]     |
[INFO] [stdout] 152 | ...                   intent = try!(to_result(intent.0.exception(
[INFO] [stdout]     |                                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/stream.rs:159:42
[INFO] [stdout]     |
[INFO] [stdout] 159 | ...                   intent = try!(to_result(intent.0.exception(
[INFO] [stdout]     |                                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/stream.rs:170:34
[INFO] [stdout]     |
[INFO] [stdout] 170 |                         intent = try!(to_result(intent.0.bytes_flushed(
[INFO] [stdout]     |                                  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/stream.rs:56:41
[INFO] [stdout]    |
[INFO] [stdout] 56 |         -> Result<Stream<P>, Option<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/intention.rs:18:25
[INFO] [stdout]    |
[INFO] [stdout] 18 |     pub fn error(e: Box<Error>) -> Self {
[INFO] [stdout]    |                         ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0423]: expected function, tuple struct or tuple variant, found struct `Persistent`
[INFO] [stdout]    --> src/persistent.rs:242:13
[INFO] [stdout]     |
[INFO] [stdout] 242 |             Persistent(self.0.clone(), self.1.clone(), Fsm::Idle)
[INFO] [stdout]     |             ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/errors.rs:15:32
[INFO] [stdout]    |
[INFO] [stdout] 15 |     fn cause(&self) -> Option<&Error> { None }
[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/protocol.rs:163:23
[INFO] [stdout]     |
[INFO] [stdout] 163 |         -> Option<Box<Error>>;
[INFO] [stdout]     |                       ^^^^^ help: use `dyn`: `dyn Error`
[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/stream.rs:24:58
[INFO] [stdout]    |
[INFO] [stdout] 24 |     -> Result<(P, Expectation, Option<Time>), Option<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/lib.rs:137:43
[INFO] [stdout]     |
[INFO] [stdout] 137 | pub struct Intent<M>(Result<M, Option<Box<Error>>>, Expectation, Option<Time>);
[INFO] [stdout]     |                                           ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/stream.rs:60:26
[INFO] [stdout]    |
[INFO] [stdout] 60 |         let mut intent = try!(to_result(intent));
[INFO] [stdout]    |                          ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/stream.rs:101:38
[INFO] [stdout]     |
[INFO] [stdout] 101 | ...                   intent = try!(to_result(intent.0.bytes_read(
[INFO] [stdout]     |                                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/stream.rs:112:42
[INFO] [stdout]     |
[INFO] [stdout] 112 | ...                   intent = try!(to_result(intent.0.exception(
[INFO] [stdout]     |                                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/stream.rs:119:42
[INFO] [stdout]     |
[INFO] [stdout] 119 | ...                   intent = try!(to_result(intent.0.exception(
[INFO] [stdout]     |                                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/stream.rs:133:42
[INFO] [stdout]     |
[INFO] [stdout] 133 | ...                   intent = try!(to_result(intent.0.bytes_read(
[INFO] [stdout]     |                                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/stream.rs:140:38
[INFO] [stdout]     |
[INFO] [stdout] 140 | ...                   intent = try!(to_result(intent.0.exception(
[INFO] [stdout]     |                                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/stream.rs:152:42
[INFO] [stdout]     |
[INFO] [stdout] 152 | ...                   intent = try!(to_result(intent.0.exception(
[INFO] [stdout]     |                                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/stream.rs:159:42
[INFO] [stdout]     |
[INFO] [stdout] 159 | ...                   intent = try!(to_result(intent.0.exception(
[INFO] [stdout]     |                                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/stream.rs:170:34
[INFO] [stdout]     |
[INFO] [stdout] 170 |                         intent = try!(to_result(intent.0.bytes_flushed(
[INFO] [stdout]     |                                  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/stream.rs:56:41
[INFO] [stdout]    |
[INFO] [stdout] 56 |         -> Result<Stream<P>, Option<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/intention.rs:18:25
[INFO] [stdout]    |
[INFO] [stdout] 18 |     pub fn error(e: Box<Error>) -> Self {
[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/errors.rs:15:32
[INFO] [stdout]    |
[INFO] [stdout] 15 |     fn cause(&self) -> Option<&Error> { None }
[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/lib.rs:137:43
[INFO] [stdout]     |
[INFO] [stdout] 137 | pub struct Intent<M>(Result<M, Option<Box<Error>>>, Expectation, Option<Time>);
[INFO] [stdout]     |                                           ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/protocol.rs:7:1
[INFO] [stdout]    |
[INFO] [stdout] 7  | / quick_error!{
[INFO] [stdout] 8  | |     /// An exception value that is received in `Protocol::exception` method
[INFO] [stdout] 9  | |     ///
[INFO] [stdout] 10 | |     /// This thing is usually used for nice error detection. But sometimes it
[INFO] [stdout] ...  |
[INFO] [stdout] 45 | |     }
[INFO] [stdout] 46 | | }
[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 associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/protocol.rs:7:1
[INFO] [stdout]    |
[INFO] [stdout] 7  | / quick_error!{
[INFO] [stdout] 8  | |     /// An exception value that is received in `Protocol::exception` method
[INFO] [stdout] 9  | |     ///
[INFO] [stdout] 10 | |     /// This thing is usually used for nice error detection. But sometimes it
[INFO] [stdout] ...  |
[INFO] [stdout] 45 | |     }
[INFO] [stdout] 46 | | }
[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 associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/protocol.rs:7:1
[INFO] [stdout]    |
[INFO] [stdout] 7  | / quick_error!{
[INFO] [stdout] 8  | |     /// An exception value that is received in `Protocol::exception` method
[INFO] [stdout] 9  | |     ///
[INFO] [stdout] 10 | |     /// This thing is usually used for nice error detection. But sometimes it
[INFO] [stdout] ...  |
[INFO] [stdout] 45 | |     }
[INFO] [stdout] 46 | | }
[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 associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/protocol.rs:7:1
[INFO] [stdout]    |
[INFO] [stdout] 7  | / quick_error!{
[INFO] [stdout] 8  | |     /// An exception value that is received in `Protocol::exception` method
[INFO] [stdout] 9  | |     ///
[INFO] [stdout] 10 | |     /// This thing is usually used for nice error detection. But sometimes it
[INFO] [stdout] ...  |
[INFO] [stdout] 45 | |     }
[INFO] [stdout] 46 | | }
[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] [stderr] error: could not compile `rotor-stream`
[INFO] [stdout] warning: unused import: `std::error::Error`
[INFO] [stdout]  --> src/persistent.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::error::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stdout] error: aborting due to previous error; 18 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stdout] For more information about this error, try `rustc --explain E0423`.
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: unused import: `std::error::Error`
[INFO] [stdout]  --> src/persistent.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::error::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 18 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0423`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "3e3796c35d12e9f20a15defd7dfdae5b385c6fa5a79a1b7434844773938c00e8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3e3796c35d12e9f20a15defd7dfdae5b385c6fa5a79a1b7434844773938c00e8", kill_on_drop: false }`
[INFO] [stdout] 3e3796c35d12e9f20a15defd7dfdae5b385c6fa5a79a1b7434844773938c00e8