[INFO] fetching crate netstring 0.4.1...
[INFO] testing netstring-0.4.1 against 1.84.0 for beta-1.85-1
[INFO] extracting crate netstring 0.4.1 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate netstring 0.4.1 on toolchain 1.84.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.84.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate netstring 0.4.1
[INFO] finished tweaking crates.io crate netstring 0.4.1
[INFO] tweaked toml for crates.io crate netstring 0.4.1 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.84.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 2 packages to latest compatible versions
[INFO] [stderr]       Adding log v0.3.9 (available: v0.4.25)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.84.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:86ea7c7af713d31e8cfdb68a6d0db50b5cf7cbeecde3d112f9f257f747318d36" "/opt/rustwide/cargo-home/bin/cargo" "+1.84.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d15638914bf9409540c99970f5bea3a5f4ce37f2cec99e8abc85d2d30c93c596
[INFO] running `Command { std: "docker" "start" "-a" "d15638914bf9409540c99970f5bea3a5f4ce37f2cec99e8abc85d2d30c93c596", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d15638914bf9409540c99970f5bea3a5f4ce37f2cec99e8abc85d2d30c93c596", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d15638914bf9409540c99970f5bea3a5f4ce37f2cec99e8abc85d2d30c93c596", kill_on_drop: false }`
[INFO] [stdout] d15638914bf9409540c99970f5bea3a5f4ce37f2cec99e8abc85d2d30c93c596
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:86ea7c7af713d31e8cfdb68a6d0db50b5cf7cbeecde3d112f9f257f747318d36" "/opt/rustwide/cargo-home/bin/cargo" "+1.84.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5284fcd05d01c3b69444247db73b9c6ba3ea45584f286293c090c71178cea2fc
[INFO] running `Command { std: "docker" "start" "-a" "5284fcd05d01c3b69444247db73b9c6ba3ea45584f286293c090c71178cea2fc", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] [stderr]    Compiling log v0.4.25
[INFO] [stderr]    Compiling log v0.3.9
[INFO] [stderr]    Compiling netstring v0.4.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/channel.rs:127:9
[INFO] [stdout]     |
[INFO] [stdout] 127 |         try!(self.outgoing.send(Op::Message(msg.into())));
[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/channel.rs:134:9
[INFO] [stdout]     |
[INFO] [stdout] 134 |         try!(self.outgoing.send(Op::Flush(tx)));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/channel.rs:135:9
[INFO] [stdout]     |
[INFO] [stdout] 135 |         try!(rx.recv());
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/channel.rs:164:9
[INFO] [stdout]     |
[INFO] [stdout] 164 |         try!(self.outgoing.send(Op::Last(msg.into(), tx)));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/channel.rs:165:9
[INFO] [stdout]     |
[INFO] [stdout] 165 |         try!(rx.recv());
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/lib.rs:48:9
[INFO] [stdout]    |
[INFO] [stdout] 48 |         try!(self.read(t[..].as_mut()));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/lib.rs:31:18
[INFO] [stdout]    |
[INFO] [stdout] 31 |         let ln = try!(read_length(self));
[INFO] [stdout]    |                  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/lib.rs:38:21
[INFO] [stdout]    |
[INFO] [stdout] 38 |             let r = try!(self.read(data[offset..].as_mut()));
[INFO] [stdout]    |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/lib.rs:67:9
[INFO] [stdout]    |
[INFO] [stdout] 67 |         try!(self.write_all(s.as_bytes()));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:117:17
[INFO] [stdout]     |
[INFO] [stdout] 117 |         let r = try!(r.read(t[current..current + 1].as_mut()));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/channel.rs:190:32
[INFO] [stdout]     |
[INFO] [stdout] 190 |     fn cause(&self) -> Option<&Error> {
[INFO] [stdout]     |                                ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 190 |     fn cause(&self) -> Option<&dyn Error> {
[INFO] [stdout]     |                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::cause`: replaced by Error::source, which can support downcasting
[INFO] [stdout]    --> src/channel.rs:174:27
[INFO] [stdout]     |
[INFO] [stdout] 174 |                 match err.cause() {
[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/channel.rs:175:62
[INFO] [stdout]     |
[INFO] [stdout] 175 |                     Some(inner) => write!(f, "{} - {}", self.description(), inner),
[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/channel.rs:176:50
[INFO] [stdout]     |
[INFO] [stdout] 176 |                     None => write!(f, "{}", self.description()),
[INFO] [stdout]     |                                                  ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `stop` is never read
[INFO] [stdout]   --> src/channel.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub struct Channel {
[INFO] [stdout]    |            ------- field in this struct
[INFO] [stdout] 13 |     outgoing: SyncSender<Op>,
[INFO] [stdout] 14 |     stop: Arc<AtomicBool>,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Channel` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.03s
[INFO] running `Command { std: "docker" "inspect" "5284fcd05d01c3b69444247db73b9c6ba3ea45584f286293c090c71178cea2fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5284fcd05d01c3b69444247db73b9c6ba3ea45584f286293c090c71178cea2fc", kill_on_drop: false }`
[INFO] [stdout] 5284fcd05d01c3b69444247db73b9c6ba3ea45584f286293c090c71178cea2fc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:86ea7c7af713d31e8cfdb68a6d0db50b5cf7cbeecde3d112f9f257f747318d36" "/opt/rustwide/cargo-home/bin/cargo" "+1.84.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6abbc055357e430dacfbb09ab19b79b1755addfc09c42f161cc2c616e69d310c
[INFO] running `Command { std: "docker" "start" "-a" "6abbc055357e430dacfbb09ab19b79b1755addfc09c42f161cc2c616e69d310c", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/channel.rs:127:9
[INFO] [stdout]     |
[INFO] [stdout] 127 |         try!(self.outgoing.send(Op::Message(msg.into())));
[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/channel.rs:134:9
[INFO] [stdout]     |
[INFO] [stdout] 134 |         try!(self.outgoing.send(Op::Flush(tx)));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/channel.rs:135:9
[INFO] [stdout]     |
[INFO] [stdout] 135 |         try!(rx.recv());
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/channel.rs:164:9
[INFO] [stdout]     |
[INFO] [stdout] 164 |         try!(self.outgoing.send(Op::Last(msg.into(), tx)));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/channel.rs:165:9
[INFO] [stdout]     |
[INFO] [stdout] 165 |         try!(rx.recv());
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/lib.rs:48:9
[INFO] [stdout]    |
[INFO] [stdout] 48 |         try!(self.read(t[..].as_mut()));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/lib.rs:31:18
[INFO] [stdout]    |
[INFO] [stdout] 31 |         let ln = try!(read_length(self));
[INFO] [stdout]    |                  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/lib.rs:38:21
[INFO] [stdout]    |
[INFO] [stdout] 38 |             let r = try!(self.read(data[offset..].as_mut()));
[INFO] [stdout]    |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling netstring v0.4.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/lib.rs:67:9
[INFO] [stdout]    |
[INFO] [stdout] 67 |         try!(self.write_all(s.as_bytes()));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:117:17
[INFO] [stdout]     |
[INFO] [stdout] 117 |         let r = try!(r.read(t[current..current + 1].as_mut()));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/channel.rs:190:32
[INFO] [stdout]     |
[INFO] [stdout] 190 |     fn cause(&self) -> Option<&Error> {
[INFO] [stdout]     |                                ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 190 |     fn cause(&self) -> Option<&dyn Error> {
[INFO] [stdout]     |                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::cause`: replaced by Error::source, which can support downcasting
[INFO] [stdout]    --> src/channel.rs:174:27
[INFO] [stdout]     |
[INFO] [stdout] 174 |                 match err.cause() {
[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/channel.rs:175:62
[INFO] [stdout]     |
[INFO] [stdout] 175 |                     Some(inner) => write!(f, "{} - {}", self.description(), inner),
[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/channel.rs:176:50
[INFO] [stdout]     |
[INFO] [stdout] 176 |                     None => write!(f, "{}", self.description()),
[INFO] [stdout]     |                                                  ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `stop` is never read
[INFO] [stdout]   --> src/channel.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub struct Channel {
[INFO] [stdout]    |            ------- field in this struct
[INFO] [stdout] 13 |     outgoing: SyncSender<Op>,
[INFO] [stdout] 14 |     stop: Arc<AtomicBool>,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Channel` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/channel.rs:127:9
[INFO] [stdout]     |
[INFO] [stdout] 127 |         try!(self.outgoing.send(Op::Message(msg.into())));
[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/channel.rs:134:9
[INFO] [stdout]     |
[INFO] [stdout] 134 |         try!(self.outgoing.send(Op::Flush(tx)));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/channel.rs:135:9
[INFO] [stdout]     |
[INFO] [stdout] 135 |         try!(rx.recv());
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/channel.rs:164:9
[INFO] [stdout]     |
[INFO] [stdout] 164 |         try!(self.outgoing.send(Op::Last(msg.into(), tx)));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/channel.rs:165:9
[INFO] [stdout]     |
[INFO] [stdout] 165 |         try!(rx.recv());
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/lib.rs:48:9
[INFO] [stdout]    |
[INFO] [stdout] 48 |         try!(self.read(t[..].as_mut()));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/lib.rs:31:18
[INFO] [stdout]    |
[INFO] [stdout] 31 |         let ln = try!(read_length(self));
[INFO] [stdout]    |                  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/lib.rs:38:21
[INFO] [stdout]    |
[INFO] [stdout] 38 |             let r = try!(self.read(data[offset..].as_mut()));
[INFO] [stdout]    |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/lib.rs:67:9
[INFO] [stdout]    |
[INFO] [stdout] 67 |         try!(self.write_all(s.as_bytes()));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:117:17
[INFO] [stdout]     |
[INFO] [stdout] 117 |         let r = try!(r.read(t[current..current + 1].as_mut()));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/channel.rs:190:32
[INFO] [stdout]     |
[INFO] [stdout] 190 |     fn cause(&self) -> Option<&Error> {
[INFO] [stdout]     |                                ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 190 |     fn cause(&self) -> Option<&dyn Error> {
[INFO] [stdout]     |                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::cause`: replaced by Error::source, which can support downcasting
[INFO] [stdout]    --> src/channel.rs:174:27
[INFO] [stdout]     |
[INFO] [stdout] 174 |                 match err.cause() {
[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/channel.rs:175:62
[INFO] [stdout]     |
[INFO] [stdout] 175 |                     Some(inner) => write!(f, "{} - {}", self.description(), inner),
[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/channel.rs:176:50
[INFO] [stdout]     |
[INFO] [stdout] 176 |                     None => write!(f, "{}", self.description()),
[INFO] [stdout]     |                                                  ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `stop` is never read
[INFO] [stdout]   --> src/channel.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub struct Channel {
[INFO] [stdout]    |            ------- field in this struct
[INFO] [stdout] 13 |     outgoing: SyncSender<Op>,
[INFO] [stdout] 14 |     stop: Arc<AtomicBool>,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Channel` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.60s
[INFO] running `Command { std: "docker" "inspect" "6abbc055357e430dacfbb09ab19b79b1755addfc09c42f161cc2c616e69d310c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6abbc055357e430dacfbb09ab19b79b1755addfc09c42f161cc2c616e69d310c", kill_on_drop: false }`
[INFO] [stdout] 6abbc055357e430dacfbb09ab19b79b1755addfc09c42f161cc2c616e69d310c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:86ea7c7af713d31e8cfdb68a6d0db50b5cf7cbeecde3d112f9f257f747318d36" "/opt/rustwide/cargo-home/bin/cargo" "+1.84.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] d69e6982be089157357718cc4ba0f4fdab15721dc13ce0727dfb9e50412dffdb
[INFO] running `Command { std: "docker" "start" "-a" "d69e6982be089157357718cc4ba0f4fdab15721dc13ce0727dfb9e50412dffdb", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/channel.rs:127:9
[INFO] [stderr]     |
[INFO] [stderr] 127 |         try!(self.outgoing.send(Op::Message(msg.into())));
[INFO] [stderr]     |         ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/channel.rs:134:9
[INFO] [stderr]     |
[INFO] [stderr] 134 |         try!(self.outgoing.send(Op::Flush(tx)));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/channel.rs:135:9
[INFO] [stderr]     |
[INFO] [stderr] 135 |         try!(rx.recv());
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/channel.rs:164:9
[INFO] [stderr]     |
[INFO] [stderr] 164 |         try!(self.outgoing.send(Op::Last(msg.into(), tx)));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/channel.rs:165:9
[INFO] [stderr]     |
[INFO] [stderr] 165 |         try!(rx.recv());
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/lib.rs:48:9
[INFO] [stderr]    |
[INFO] [stderr] 48 |         try!(self.read(t[..].as_mut()));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/lib.rs:31:18
[INFO] [stderr]    |
[INFO] [stderr] 31 |         let ln = try!(read_length(self));
[INFO] [stderr]    |                  ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/lib.rs:38:21
[INFO] [stderr]    |
[INFO] [stderr] 38 |             let r = try!(self.read(data[offset..].as_mut()));
[INFO] [stderr]    |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/lib.rs:67:9
[INFO] [stderr]    |
[INFO] [stderr] 67 |         try!(self.write_all(s.as_bytes()));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:117:17
[INFO] [stderr]     |
[INFO] [stderr] 117 |         let r = try!(r.read(t[current..current + 1].as_mut()));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/channel.rs:190:32
[INFO] [stderr]     |
[INFO] [stderr] 190 |     fn cause(&self) -> Option<&Error> {
[INFO] [stderr]     |                                ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 190 |     fn cause(&self) -> Option<&dyn Error> {
[INFO] [stderr]     |                                +++
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated method `std::error::Error::cause`: replaced by Error::source, which can support downcasting
[INFO] [stderr]    --> src/channel.rs:174:27
[INFO] [stderr]     |
[INFO] [stderr] 174 |                 match err.cause() {
[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/channel.rs:175:62
[INFO] [stderr]     |
[INFO] [stderr] 175 |                     Some(inner) => write!(f, "{} - {}", self.description(), inner),
[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/channel.rs:176:50
[INFO] [stderr]     |
[INFO] [stderr] 176 |                     None => write!(f, "{}", self.description()),
[INFO] [stderr]     |                                                  ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field `stop` is never read
[INFO] [stderr]   --> src/channel.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 12 | pub struct Channel {
[INFO] [stderr]    |            ------- field in this struct
[INFO] [stderr] 13 |     outgoing: SyncSender<Op>,
[INFO] [stderr] 14 |     stop: Arc<AtomicBool>,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `Channel` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `netstring` (lib) generated 15 warnings (run `cargo fix --lib -p netstring` to apply 1 suggestion)
[INFO] [stderr] warning: `netstring` (lib test) generated 15 warnings (15 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/netstring-3b77e2ad892628f4)
[INFO] [stdout] 
[INFO] [stdout] running 9 tests
[INFO] [stdout] test channel::tests::reader ... ok
[INFO] [stdout] test channel::tests::send ... ok
[INFO] [stdout] test tests::basic_write ... ok
[INFO] [stdout] test tests::multiple ... ok
[INFO] [stdout] test tests::basic_read ... ok
[INFO] [stdout] test channel::tests::send_last ... ok
[INFO] [stdout] test tests::invalid_delimiter - should panic ... ok
[INFO] [stdout] test tests::longer - should panic ... ok
[INFO] [stdout] test tests::shorter - should panic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 9 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.06s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests netstring
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/channel.rs - channel::Channel::send_last (line 146) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.27s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "d69e6982be089157357718cc4ba0f4fdab15721dc13ce0727dfb9e50412dffdb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d69e6982be089157357718cc4ba0f4fdab15721dc13ce0727dfb9e50412dffdb", kill_on_drop: false }`
[INFO] [stdout] d69e6982be089157357718cc4ba0f4fdab15721dc13ce0727dfb9e50412dffdb