[INFO] fetching crate fern 0.5.8...
[INFO] checking fern-0.5.8 against master#2748a9fd93dd1a00a4521f4f16de5befbf77f6cd for pr-62262-1
[INFO] extracting crate fern 0.5.8 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate fern 0.5.8 on toolchain 2748a9fd93dd1a00a4521f4f16de5befbf77f6cd
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate fern 0.5.8
[INFO] removed 6 missing examples
[INFO] finished tweaking crates.io crate fern 0.5.8
[INFO] tweaked toml for crates.io crate fern 0.5.8 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] warning: An explicit [[example]] section is specified in Cargo.toml which currently
[INFO] [stderr] disables Cargo from automatically inferring other example targets.
[INFO] [stderr] This inference behavior will change in the Rust 2018 edition and the following
[INFO] [stderr] files will be included as a example target:
[INFO] [stderr] 
[INFO] [stderr] * /workspace/builds/worker-9/source/examples/colored.rs
[INFO] [stderr] * /workspace/builds/worker-9/source/examples/syslog.rs
[INFO] [stderr] * /workspace/builds/worker-9/source/examples/cmd-program.rs
[INFO] [stderr] * /workspace/builds/worker-9/source/examples/pretty-colored.rs
[INFO] [stderr] * /workspace/builds/worker-9/source/examples/syslog3.rs
[INFO] [stderr] * /workspace/builds/worker-9/source/examples/meta-logging.rs
[INFO] [stderr] 
[INFO] [stderr] This is likely to break cargo build or cargo test as these files may not be
[INFO] [stderr] ready to be compiled as a example target today. You can future-proof yourself
[INFO] [stderr] and disable this warning by adding `autoexamples = false` to your [package]
[INFO] [stderr] section. You may also move the files to a location where Cargo would not
[INFO] [stderr] automatically infer them to be a target, such as in subfolders.
[INFO] [stderr] 
[INFO] [stderr] For more information on this warning you can consult
[INFO] [stderr] https://github.com/rust-lang/cargo/issues/5330
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "/opt/rustwide/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] da8884ebf0a2d45c00698350e265289763d2ac1d7d8a5983e13da1e3de2d16ad
[INFO] running `"docker" "start" "-a" "da8884ebf0a2d45c00698350e265289763d2ac1d7d8a5983e13da1e3de2d16ad"`
[INFO] [stderr] warning: An explicit [[example]] section is specified in Cargo.toml which currently
[INFO] [stderr] disables Cargo from automatically inferring other example targets.
[INFO] [stderr] This inference behavior will change in the Rust 2018 edition and the following
[INFO] [stderr] files will be included as a example target:
[INFO] [stderr] 
[INFO] [stderr] * /opt/rustwide/workdir/examples/colored.rs
[INFO] [stderr] * /opt/rustwide/workdir/examples/syslog.rs
[INFO] [stderr] * /opt/rustwide/workdir/examples/cmd-program.rs
[INFO] [stderr] * /opt/rustwide/workdir/examples/pretty-colored.rs
[INFO] [stderr] * /opt/rustwide/workdir/examples/syslog3.rs
[INFO] [stderr] * /opt/rustwide/workdir/examples/meta-logging.rs
[INFO] [stderr] 
[INFO] [stderr] This is likely to break cargo build or cargo test as these files may not be
[INFO] [stderr] ready to be compiled as a example target today. You can future-proof yourself
[INFO] [stderr] and disable this warning by adding `autoexamples = false` to your [package]
[INFO] [stderr] section. You may also move the files to a location where Cargo would not
[INFO] [stderr] automatically infer them to be a target, such as in subfolders.
[INFO] [stderr] 
[INFO] [stderr] For more information on this warning you can consult
[INFO] [stderr] https://github.com/rust-lang/cargo/issues/5330
[INFO] [stderr]     Checking fern v0.5.8 (/opt/rustwide/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/builders.rs:572:53
[INFO] [stderr]     |
[INFO] [stderr] 572 |     pub fn into_log(self) -> (log::LevelFilter, Box<log::Log>) {
[INFO] [stderr]     |                                                     ^^^^^^^^ help: use `dyn`: `dyn log::Log`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/builders.rs:618:21
[INFO] [stderr]     |
[INFO] [stderr] 618 |         stream: Box<Write + Send>,
[INFO] [stderr]     |                     ^^^^^^^^^^^^ help: use `dyn`: `dyn Write + Send`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/builders.rs:631:20
[INFO] [stderr]     |
[INFO] [stderr] 631 |     OtherBoxed(Box<Log>),
[INFO] [stderr]     |                    ^^^ help: use `dyn`: `dyn Log`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/builders.rs:633:26
[INFO] [stderr]     |
[INFO] [stderr] 633 |     OtherStatic(&'static Log),
[INFO] [stderr]     |                          ^^^ help: use `dyn`: `dyn Log`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/builders.rs:718:15
[INFO] [stderr]     |
[INFO] [stderr] 718 | impl From<Box<Log>> for Output {
[INFO] [stderr]     |               ^^^ help: use `dyn`: `dyn Log`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/builders.rs:720:22
[INFO] [stderr]     |
[INFO] [stderr] 720 |     fn from(log: Box<Log>) -> Self {
[INFO] [stderr]     |                      ^^^ help: use `dyn`: `dyn Log`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/builders.rs:725:20
[INFO] [stderr]     |
[INFO] [stderr] 725 | impl From<&'static Log> for Output {
[INFO] [stderr]     |                    ^^^ help: use `dyn`: `dyn Log`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/builders.rs:727:27
[INFO] [stderr]     |
[INFO] [stderr] 727 |     fn from(log: &'static Log) -> Self {
[INFO] [stderr]     |                           ^^^ help: use `dyn`: `dyn Log`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/builders.rs:745:15
[INFO] [stderr]     |
[INFO] [stderr] 745 | impl From<Box<Write + Send>> for Output {
[INFO] [stderr]     |               ^^^^^^^^^^^^ help: use `dyn`: `dyn Write + Send`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/builders.rs:752:25
[INFO] [stderr]     |
[INFO] [stderr] 752 |     fn from(writer: Box<Write + Send>) -> Self {
[INFO] [stderr]     |                         ^^^^^^^^^^^^ help: use `dyn`: `dyn Write + Send`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/builders.rs:942:59
[INFO] [stderr]     |
[INFO] [stderr] 942 |     pub fn writer<T: Into<Cow<'static, str>>>(writer: Box<Write + Send>, line_sep: T) -> Self {
[INFO] [stderr]     |                                                           ^^^^^^^^^^^^ help: use `dyn`: `dyn Write + Send`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/builders.rs:1085:52
[INFO] [stderr]      |
[INFO] [stderr] 1085 |         Self::from(Box::new(CallShim(func)) as Box<log::Log>)
[INFO] [stderr]      |                                                    ^^^^^^^^ help: use `dyn`: `dyn log::Log`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/errors.rs:54:32
[INFO] [stderr]    |
[INFO] [stderr] 54 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stderr]    |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/log_impl.rs:66:20
[INFO] [stderr]    |
[INFO] [stderr] 66 |     OtherBoxed(Box<Log>),
[INFO] [stderr]    |                    ^^^ help: use `dyn`: `dyn Log`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/log_impl.rs:67:26
[INFO] [stderr]    |
[INFO] [stderr] 67 |     OtherStatic(&'static Log),
[INFO] [stderr]    |                          ^^^ help: use `dyn`: `dyn Log`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/log_impl.rs:93:27
[INFO] [stderr]    |
[INFO] [stderr] 93 |     pub stream: Mutex<Box<Write + Send>>,
[INFO] [stderr]    |                           ^^^^^^^^^^^^ help: use `dyn`: `dyn Write + Send`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:252:22
[INFO] [stderr]     |
[INFO] [stderr] 252 | pub type Formatter = Fn(FormatCallback, &fmt::Arguments, &log::Record) + Sync + Send + 'static;
[INFO] [stderr]     |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(FormatCallback, &fmt::Arguments, &log::Record) + Sync + Send + 'static`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:256:19
[INFO] [stderr]     |
[INFO] [stderr] 256 | pub type Filter = Fn(&log::Metadata) -> bool + Send + Sync + 'static;
[INFO] [stderr]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&log::Metadata) -> bool + Send + Sync + 'static`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/builders.rs:572:53
[INFO] [stderr]     |
[INFO] [stderr] 572 |     pub fn into_log(self) -> (log::LevelFilter, Box<log::Log>) {
[INFO] [stderr]     |                                                     ^^^^^^^^ help: use `dyn`: `dyn log::Log`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/builders.rs:618:21
[INFO] [stderr]     |
[INFO] [stderr] 618 |         stream: Box<Write + Send>,
[INFO] [stderr]     |                     ^^^^^^^^^^^^ help: use `dyn`: `dyn Write + Send`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/builders.rs:631:20
[INFO] [stderr]     |
[INFO] [stderr] 631 |     OtherBoxed(Box<Log>),
[INFO] [stderr]     |                    ^^^ help: use `dyn`: `dyn Log`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/builders.rs:633:26
[INFO] [stderr]     |
[INFO] [stderr] 633 |     OtherStatic(&'static Log),
[INFO] [stderr]     |                          ^^^ help: use `dyn`: `dyn Log`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/builders.rs:718:15
[INFO] [stderr]     |
[INFO] [stderr] 718 | impl From<Box<Log>> for Output {
[INFO] [stderr]     |               ^^^ help: use `dyn`: `dyn Log`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/builders.rs:720:22
[INFO] [stderr]     |
[INFO] [stderr] 720 |     fn from(log: Box<Log>) -> Self {
[INFO] [stderr]     |                      ^^^ help: use `dyn`: `dyn Log`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/builders.rs:725:20
[INFO] [stderr]     |
[INFO] [stderr] 725 | impl From<&'static Log> for Output {
[INFO] [stderr]     |                    ^^^ help: use `dyn`: `dyn Log`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/builders.rs:727:27
[INFO] [stderr]     |
[INFO] [stderr] 727 |     fn from(log: &'static Log) -> Self {
[INFO] [stderr]     |                           ^^^ help: use `dyn`: `dyn Log`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/builders.rs:745:15
[INFO] [stderr]     |
[INFO] [stderr] 745 | impl From<Box<Write + Send>> for Output {
[INFO] [stderr]     |               ^^^^^^^^^^^^ help: use `dyn`: `dyn Write + Send`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/builders.rs:752:25
[INFO] [stderr]     |
[INFO] [stderr] 752 |     fn from(writer: Box<Write + Send>) -> Self {
[INFO] [stderr]     |                         ^^^^^^^^^^^^ help: use `dyn`: `dyn Write + Send`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/builders.rs:942:59
[INFO] [stderr]     |
[INFO] [stderr] 942 |     pub fn writer<T: Into<Cow<'static, str>>>(writer: Box<Write + Send>, line_sep: T) -> Self {
[INFO] [stderr]     |                                                           ^^^^^^^^^^^^ help: use `dyn`: `dyn Write + Send`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/builders.rs:1085:52
[INFO] [stderr]      |
[INFO] [stderr] 1085 |         Self::from(Box::new(CallShim(func)) as Box<log::Log>)
[INFO] [stderr]      |                                                    ^^^^^^^^ help: use `dyn`: `dyn log::Log`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/errors.rs:54:32
[INFO] [stderr]    |
[INFO] [stderr] 54 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stderr]    |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/log_impl.rs:66:20
[INFO] [stderr]    |
[INFO] [stderr] 66 |     OtherBoxed(Box<Log>),
[INFO] [stderr]    |                    ^^^ help: use `dyn`: `dyn Log`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/log_impl.rs:67:26
[INFO] [stderr]    |
[INFO] [stderr] 67 |     OtherStatic(&'static Log),
[INFO] [stderr]    |                          ^^^ help: use `dyn`: `dyn Log`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/log_impl.rs:93:27
[INFO] [stderr]    |
[INFO] [stderr] 93 |     pub stream: Mutex<Box<Write + Send>>,
[INFO] [stderr]    |                           ^^^^^^^^^^^^ help: use `dyn`: `dyn Write + Send`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:252:22
[INFO] [stderr]     |
[INFO] [stderr] 252 | pub type Formatter = Fn(FormatCallback, &fmt::Arguments, &log::Record) + Sync + Send + 'static;
[INFO] [stderr]     |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(FormatCallback, &fmt::Arguments, &log::Record) + Sync + Send + 'static`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:256:19
[INFO] [stderr]     |
[INFO] [stderr] 256 | pub type Filter = Fn(&log::Metadata) -> bool + Send + Sync + 'static;
[INFO] [stderr]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&log::Metadata) -> bool + Send + Sync + 'static`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> tests/panic_logging.rs:21:43
[INFO] [stderr]    |
[INFO] [stderr] 21 | fn warn_and_higher_panics_config() -> Box<log::Log> {
[INFO] [stderr]    |                                           ^^^^^^^^ help: use `dyn`: `dyn log::Log`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> tests/write_logging.rs:52:19
[INFO] [stderr]    |
[INFO] [stderr] 52 |         }) as Box<io::Write + Send>)
[INFO] [stderr]    |                   ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn io::Write + Send`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> tests/global_logging.rs:51:42
[INFO] [stderr]    |
[INFO] [stderr] 51 |     fn cloned_boxed_logger(&self) -> Box<log::Log> {
[INFO] [stderr]    |                                          ^^^^^^^^ help: use `dyn`: `dyn log::Log`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.40s
[INFO] running `"docker" "inspect" "da8884ebf0a2d45c00698350e265289763d2ac1d7d8a5983e13da1e3de2d16ad"`
[INFO] running `"docker" "rm" "-f" "da8884ebf0a2d45c00698350e265289763d2ac1d7d8a5983e13da1e3de2d16ad"`
[INFO] [stdout] da8884ebf0a2d45c00698350e265289763d2ac1d7d8a5983e13da1e3de2d16ad