[INFO] fetching crate buf_redux_ng 0.8.4...
[INFO] testing buf_redux_ng-0.8.4 against 1.98.0-beta.1 for beta-1.98-1
[INFO] extracting crate buf_redux_ng 0.8.4 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate buf_redux_ng 0.8.4
[INFO] finished tweaking crates.io crate buf_redux_ng 0.8.4
[INFO] tweaked toml for crates.io crate buf_redux_ng 0.8.4 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate buf_redux_ng 0.8.4 on toolchain 1.98.0-beta.1
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.98.0-beta.1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate buf_redux_ng 0.8.4 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" "+1.98.0-beta.1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3d5ced03c013a94a2f102a4510f48a6e9184255caf5fd8244f58017bde7f5210" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 209990cb23173515d4db623d10d8440e91b46a0d53c9f5b23b97ba02852e3f9f
[INFO] running `Command { std: "docker" "start" "209990cb23173515d4db623d10d8440e91b46a0d53c9f5b23b97ba02852e3f9f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "209990cb23173515d4db623d10d8440e91b46a0d53c9f5b23b97ba02852e3f9f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "209990cb23173515d4db623d10d8440e91b46a0d53c9f5b23b97ba02852e3f9f" "/opt/rustwide/cargo-home/bin/cargo" "+1.98.0-beta.1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "209990cb23173515d4db623d10d8440e91b46a0d53c9f5b23b97ba02852e3f9f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "209990cb23173515d4db623d10d8440e91b46a0d53c9f5b23b97ba02852e3f9f" "/opt/rustwide/cargo-home/bin/cargo" "+1.98.0-beta.1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.186
[INFO] [stderr]    Compiling memchr v2.8.1
[INFO] [stderr]    Compiling safemem v0.3.3
[INFO] [stderr]    Compiling slice-deque v0.2.4
[INFO] [stderr]    Compiling buf_redux_ng v0.8.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/lib.rs:868:23
[INFO] [stdout]     |
[INFO] [stdout] 868 |         error::Error::description(self.error())
[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/lib.rs:373:45
[INFO] [stdout]     |
[INFO] [stdout] 373 |     pub fn boxed<'a>(self) -> BufReader<Box<Read + 'a>, P> where R: 'a {
[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/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 373 |     pub fn boxed<'a>(self) -> BufReader<Box<dyn Read + 'a>, P> where R: 'a {
[INFO] [stdout]     |                                             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:871:32
[INFO] [stdout]     |
[INFO] [stdout] 871 |     fn cause(&self) -> Option<&error::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/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 871 |     fn cause(&self) -> Option<&dyn error::Error> {
[INFO] [stdout]     |                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/lib.rs:1273:42
[INFO] [stdout]      |
[INFO] [stdout] 1273 |     static DROP_ERR_HANDLER: RefCell<Box<Fn(&mut Write, &mut Buffer, io::Error)>>
[INFO] [stdout]      |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]      = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]      |
[INFO] [stdout] 1273 |     static DROP_ERR_HANDLER: RefCell<Box<dyn Fn(&mut Write, &mut Buffer, io::Error)>>
[INFO] [stdout]      |                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/lib.rs:1273:50
[INFO] [stdout]      |
[INFO] [stdout] 1273 |     static DROP_ERR_HANDLER: RefCell<Box<Fn(&mut Write, &mut Buffer, io::Error)>>
[INFO] [stdout]      |                                                  ^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]      = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]      |
[INFO] [stdout] 1273 |     static DROP_ERR_HANDLER: RefCell<Box<Fn(&mut dyn Write, &mut Buffer, io::Error)>>
[INFO] [stdout]      |                                                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/lib.rs:1286:18
[INFO] [stdout]      |
[INFO] [stdout] 1286 | where F: Fn(&mut Write, &mut Buffer, io::Error)
[INFO] [stdout]      |                  ^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]      = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]      |
[INFO] [stdout] 1286 | where F: Fn(&mut dyn Write, &mut Buffer, io::Error)
[INFO] [stdout]      |                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:374:24
[INFO] [stdout]     |
[INFO] [stdout] 374 |         let inner: Box<Read + 'a> = Box::new(self.inner);
[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/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 374 |         let inner: Box<dyn Read + 'a> = Box::new(self.inner);
[INFO] [stdout]     |                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> src/lib.rs:1050:17
[INFO] [stdout]      |
[INFO] [stdout] 1050 |             let mut buf = unsafe { self.buf.write_buf() };
[INFO] [stdout]      |                 ----^^^
[INFO] [stdout]      |                 |
[INFO] [stdout]      |                 help: remove this `mut`
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> src/lib.rs:1068:17
[INFO] [stdout]      |
[INFO] [stdout] 1068 |             let mut buf = self.buf.write_buf();
[INFO] [stdout]      |                 ----^^^
[INFO] [stdout]      |                 |
[INFO] [stdout]      |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.69s
[INFO] running `Command { std: "docker" "inspect" "209990cb23173515d4db623d10d8440e91b46a0d53c9f5b23b97ba02852e3f9f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "209990cb23173515d4db623d10d8440e91b46a0d53c9f5b23b97ba02852e3f9f" "/opt/rustwide/cargo-home/bin/cargo" "+1.98.0-beta.1" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/lib.rs:868:23
[INFO] [stdout]     |
[INFO] [stdout] 868 |         error::Error::description(self.error())
[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/lib.rs:373:45
[INFO] [stdout]     |
[INFO] [stdout] 373 |     pub fn boxed<'a>(self) -> BufReader<Box<Read + 'a>, P> where R: 'a {
[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/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 373 |     pub fn boxed<'a>(self) -> BufReader<Box<dyn Read + 'a>, P> where R: 'a {
[INFO] [stdout]     |                                             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:871:32
[INFO] [stdout]     |
[INFO] [stdout] 871 |     fn cause(&self) -> Option<&error::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/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 871 |     fn cause(&self) -> Option<&dyn error::Error> {
[INFO] [stdout]     |                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/lib.rs:1273:42
[INFO] [stdout]      |
[INFO] [stdout] 1273 |     static DROP_ERR_HANDLER: RefCell<Box<Fn(&mut Write, &mut Buffer, io::Error)>>
[INFO] [stdout]      |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]      = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]      |
[INFO] [stdout] 1273 |     static DROP_ERR_HANDLER: RefCell<Box<dyn Fn(&mut Write, &mut Buffer, io::Error)>>
[INFO] [stdout]      |                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/lib.rs:1273:50
[INFO] [stdout]      |
[INFO] [stdout] 1273 |     static DROP_ERR_HANDLER: RefCell<Box<Fn(&mut Write, &mut Buffer, io::Error)>>
[INFO] [stdout]      |                                                  ^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]      = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]      |
[INFO] [stdout] 1273 |     static DROP_ERR_HANDLER: RefCell<Box<Fn(&mut dyn Write, &mut Buffer, io::Error)>>
[INFO] [stdout]      |                                                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/lib.rs:1286:18
[INFO] [stdout]      |
[INFO] [stdout] 1286 | where F: Fn(&mut Write, &mut Buffer, io::Error)
[INFO] [stdout]      |                  ^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]      = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]      |
[INFO] [stdout] 1286 | where F: Fn(&mut dyn Write, &mut Buffer, io::Error)
[INFO] [stdout]      |                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:374:24
[INFO] [stdout]     |
[INFO] [stdout] 374 |         let inner: Box<Read + 'a> = Box::new(self.inner);
[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/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 374 |         let inner: Box<dyn Read + 'a> = Box::new(self.inner);
[INFO] [stdout]     |                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> src/lib.rs:1050:17
[INFO] [stdout]      |
[INFO] [stdout] 1050 |             let mut buf = unsafe { self.buf.write_buf() };
[INFO] [stdout]      |                 ----^^^
[INFO] [stdout]      |                 |
[INFO] [stdout]      |                 help: remove this `mut`
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> src/lib.rs:1068:17
[INFO] [stdout]      |
[INFO] [stdout] 1068 |             let mut buf = self.buf.write_buf();
[INFO] [stdout]      |                 ----^^^
[INFO] [stdout]      |                 |
[INFO] [stdout]      |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling buf_redux_ng v0.8.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/lib.rs:868:23
[INFO] [stdout]     |
[INFO] [stdout] 868 |         error::Error::description(self.error())
[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/lib.rs:373:45
[INFO] [stdout]     |
[INFO] [stdout] 373 |     pub fn boxed<'a>(self) -> BufReader<Box<Read + 'a>, P> where R: 'a {
[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/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 373 |     pub fn boxed<'a>(self) -> BufReader<Box<dyn Read + 'a>, P> where R: 'a {
[INFO] [stdout]     |                                             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:871:32
[INFO] [stdout]     |
[INFO] [stdout] 871 |     fn cause(&self) -> Option<&error::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/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 871 |     fn cause(&self) -> Option<&dyn error::Error> {
[INFO] [stdout]     |                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/lib.rs:1273:42
[INFO] [stdout]      |
[INFO] [stdout] 1273 |     static DROP_ERR_HANDLER: RefCell<Box<Fn(&mut Write, &mut Buffer, io::Error)>>
[INFO] [stdout]      |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]      = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]      |
[INFO] [stdout] 1273 |     static DROP_ERR_HANDLER: RefCell<Box<dyn Fn(&mut Write, &mut Buffer, io::Error)>>
[INFO] [stdout]      |                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/lib.rs:1273:50
[INFO] [stdout]      |
[INFO] [stdout] 1273 |     static DROP_ERR_HANDLER: RefCell<Box<Fn(&mut Write, &mut Buffer, io::Error)>>
[INFO] [stdout]      |                                                  ^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]      = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]      |
[INFO] [stdout] 1273 |     static DROP_ERR_HANDLER: RefCell<Box<Fn(&mut dyn Write, &mut Buffer, io::Error)>>
[INFO] [stdout]      |                                                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/lib.rs:1286:18
[INFO] [stdout]      |
[INFO] [stdout] 1286 | where F: Fn(&mut Write, &mut Buffer, io::Error)
[INFO] [stdout]      |                  ^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]      = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]      |
[INFO] [stdout] 1286 | where F: Fn(&mut dyn Write, &mut Buffer, io::Error)
[INFO] [stdout]      |                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:374:24
[INFO] [stdout]     |
[INFO] [stdout] 374 |         let inner: Box<Read + 'a> = Box::new(self.inner);
[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/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 374 |         let inner: Box<dyn Read + 'a> = Box::new(self.inner);
[INFO] [stdout]     |                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> src/lib.rs:1050:17
[INFO] [stdout]      |
[INFO] [stdout] 1050 |             let mut buf = unsafe { self.buf.write_buf() };
[INFO] [stdout]      |                 ----^^^
[INFO] [stdout]      |                 |
[INFO] [stdout]      |                 help: remove this `mut`
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> src/lib.rs:1068:17
[INFO] [stdout]      |
[INFO] [stdout] 1068 |             let mut buf = self.buf.write_buf();
[INFO] [stdout]      |                 ----^^^
[INFO] [stdout]      |                 |
[INFO] [stdout]      |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.12s
[INFO] running `Command { std: "docker" "inspect" "209990cb23173515d4db623d10d8440e91b46a0d53c9f5b23b97ba02852e3f9f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "209990cb23173515d4db623d10d8440e91b46a0d53c9f5b23b97ba02852e3f9f" "/opt/rustwide/cargo-home/bin/cargo" "+1.98.0-beta.1" "test" "--frozen", kill_on_drop: false }`
[INFO] [stderr] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stderr]    --> src/lib.rs:868:23
[INFO] [stderr]     |
[INFO] [stderr] 868 |         error::Error::description(self.error())
[INFO] [stderr]     |                       ^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:373:45
[INFO] [stderr]     |
[INFO] [stderr] 373 |     pub fn boxed<'a>(self) -> BufReader<Box<Read + 'a>, P> where R: 'a {
[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/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stderr] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 373 |     pub fn boxed<'a>(self) -> BufReader<Box<dyn Read + 'a>, P> where R: 'a {
[INFO] [stderr]     |                                             +++
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:871:32
[INFO] [stderr]     |
[INFO] [stderr] 871 |     fn cause(&self) -> Option<&error::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/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 871 |     fn cause(&self) -> Option<&dyn error::Error> {
[INFO] [stderr]     |                                +++
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:1273:42
[INFO] [stderr]      |
[INFO] [stderr] 1273 |     static DROP_ERR_HANDLER: RefCell<Box<Fn(&mut Write, &mut Buffer, io::Error)>>
[INFO] [stderr]      |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]      |
[INFO] [stderr]      = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]      = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stderr]      |
[INFO] [stderr] 1273 |     static DROP_ERR_HANDLER: RefCell<Box<dyn Fn(&mut Write, &mut Buffer, io::Error)>>
[INFO] [stderr]      |                                          +++
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:1273:50
[INFO] [stderr]      |
[INFO] [stderr] 1273 |     static DROP_ERR_HANDLER: RefCell<Box<Fn(&mut Write, &mut Buffer, io::Error)>>
[INFO] [stderr]      |                                                  ^^^^^
[INFO] [stderr]      |
[INFO] [stderr]      = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]      = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stderr]      |
[INFO] [stderr] 1273 |     static DROP_ERR_HANDLER: RefCell<Box<Fn(&mut dyn Write, &mut Buffer, io::Error)>>
[INFO] [stderr]      |                                                  +++
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:1286:18
[INFO] [stderr]      |
[INFO] [stderr] 1286 | where F: Fn(&mut Write, &mut Buffer, io::Error)
[INFO] [stderr]      |                  ^^^^^
[INFO] [stderr]      |
[INFO] [stderr]      = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]      = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stderr]      |
[INFO] [stderr] 1286 | where F: Fn(&mut dyn Write, &mut Buffer, io::Error)
[INFO] [stderr]      |                  +++
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:374:24
[INFO] [stderr]     |
[INFO] [stderr] 374 |         let inner: Box<Read + 'a> = Box::new(self.inner);
[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/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 374 |         let inner: Box<dyn Read + 'a> = Box::new(self.inner);
[INFO] [stderr]     |                        +++
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]     --> src/lib.rs:1050:17
[INFO] [stderr]      |
[INFO] [stderr] 1050 |             let mut buf = unsafe { self.buf.write_buf() };
[INFO] [stderr]      |                 ----^^^
[INFO] [stderr]      |                 |
[INFO] [stderr]      |                 help: remove this `mut`
[INFO] [stderr]      |
[INFO] [stderr]      = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]     --> src/lib.rs:1068:17
[INFO] [stderr]      |
[INFO] [stderr] 1068 |             let mut buf = self.buf.write_buf();
[INFO] [stderr]      |                 ----^^^
[INFO] [stderr]      |                 |
[INFO] [stderr]      |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: `buf_redux_ng` (lib) generated 9 warnings (run `cargo fix --lib -p buf_redux_ng` to apply 8 suggestions)
[INFO] [stderr] warning: `buf_redux_ng` (lib test) generated 9 warnings (9 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/buf_redux_ng-6febca205ec88a28)
[INFO] [stdout] 
[INFO] [stdout] running 29 tests
[INFO] [stdout] test policy::test::test_flush_at_least ... ok
[INFO] [stdout] test policy::test::test_flush_exact ... ok
[INFO] [stdout] test policy::test::test_flush_on ... ok
[INFO] [stdout] test policy::test::test_flush_on_newline ... ok
[INFO] [stdout] test policy::test::test_min_buffered ... ok
[INFO] [stdout] test ringbuf_tests::test_buffer_new ... ok
[INFO] [stdout] test ringbuf_tests::test_buffered_reader_seek ... ok
[INFO] [stdout] test ringbuf_tests::test_buffered_reader_seek_underflow ... ok
[INFO] [stdout] test ringbuf_tests::test_buffered_reader ... ok
[INFO] [stdout] test ringbuf_tests::test_buffer_with_cap ... ok
[INFO] [stdout] test ringbuf_tests::test_read_line ... ok
[INFO] [stdout] test ringbuf_tests::test_short_reads ... ok
[INFO] [stdout] test ringbuf_tests::test_read_until ... ok
[INFO] [stdout] test std_tests::test_buffered_writer ... ok
[INFO] [stdout] test std_tests::test_buffered_writer_inner_flushes ... ok
[INFO] [stdout] test std_tests::test_buffered_writer_seek ... ok
[INFO] [stdout] test std_tests::test_line_buffer ... ok
[INFO] [stdout] test std_tests::test_read_line ... ok
[INFO] [stdout] test std_tests::test_short_reads ... ok
[INFO] [stdout] test std_tests::test_buf_writer_drops_once ... ok
[INFO] [stdout] test ringbuf_tests::issue_8 ... ok
[INFO] [stdout] test std_tests::test_read_until ... ok
[INFO] [stdout] test std_tests::test_buffered_reader_seek ... ok
[INFO] [stdout] test std_tests::test_buffered_reader_seek_underflow ... ok
[INFO] [stdout] test ringbuf_tests::test_lines ... ok
[INFO] [stdout] test std_tests::test_lines ... ok
[INFO] [stdout] test ringbuf_tests::test_mirror_boundary ... ok
[INFO] [stdout] test std_tests::test_buffered_reader ... ok
[INFO] [stdout] test buffer::std_buf::read_into_full ... ok
[INFO] [stderr]    Doc-tests buf_redux_ng
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 29 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.06s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/policy.rs - policy::MinBuffered (line 78) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/policy.rs - policy::MinBuffered (line 78) stdout ----
[INFO] [stdout] error[E0433]: cannot find module or crate `buf_redux` in the crate root
[INFO] [stdout]   --> src/policy.rs:80:5
[INFO] [stdout]    |
[INFO] [stdout] 80 | use buf_redux::policy::MinBuffered;
[INFO] [stdout]    |     ^^^^^^^^^ use of unresolved module or unlinked crate `buf_redux`
[INFO] [stdout]    |
[INFO] [stdout] help: if you wanted to use a crate named `buf_redux`, use `cargo add buf_redux` to add it to your `Cargo.toml` and import it in your code
[INFO] [stdout]    |
[INFO] [stdout] 78 + extern crate buf_redux;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `buf_redux`
[INFO] [stdout]   --> src/policy.rs:79:5
[INFO] [stdout]    |
[INFO] [stdout] 79 | use buf_redux::BufReader;
[INFO] [stdout]    |     ^^^^^^^^^ use of unresolved module or unlinked crate `buf_redux`
[INFO] [stdout]    |
[INFO] [stdout] help: if you wanted to use a crate named `buf_redux`, use `cargo add buf_redux` to add it to your `Cargo.toml` and import it in your code
[INFO] [stdout]    |
[INFO] [stdout] 78 + extern crate buf_redux;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0432, E0433.
[INFO] [stdout] For more information about an error, try `rustc --explain E0432`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/policy.rs - policy::MinBuffered (line 78)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.16s
[INFO] [stdout] 
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] running `Command { std: "docker" "inspect" "209990cb23173515d4db623d10d8440e91b46a0d53c9f5b23b97ba02852e3f9f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "209990cb23173515d4db623d10d8440e91b46a0d53c9f5b23b97ba02852e3f9f", kill_on_drop: false }`
[INFO] [stdout] 209990cb23173515d4db623d10d8440e91b46a0d53c9f5b23b97ba02852e3f9f
