[INFO] fetching crate slog-term 2.4.1...
[INFO] extracting crate slog-term 2.4.1 into work/ex/beta-1.37-6/sources/1.36.0/reg/slog-term/2.4.1
[INFO] extracting crate slog-term 2.4.1 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/slog-term/2.4.1
[INFO] validating manifest of slog-term-2.4.1 on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of slog-term-2.4.1 on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing slog-term-2.4.1
[INFO] finished frobbing slog-term-2.4.1
[INFO] frobbed toml for slog-term-2.4.1 written to work/ex/beta-1.37-6/sources/1.36.0/reg/slog-term/2.4.1/Cargo.toml
[INFO] started frobbing slog-term-2.4.1
[INFO] finished frobbing slog-term-2.4.1
[INFO] frobbed toml for slog-term-2.4.1 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/slog-term/2.4.1/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing slog-term-2.4.1 against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-6/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/slog-term/2.4.1:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-07-23" "build" "--frozen"`
[INFO] [stdout] ada3fbadc826bedc94dc41a2fc8e6c6125fca5ab619c321b8d2747e281127375
[INFO] running `"docker" "start" "-a" "ada3fbadc826bedc94dc41a2fc8e6c6125fca5ab619c321b8d2747e281127375"`
[INFO] [stderr]    Compiling slog v2.5.2
[INFO] [stderr]    Compiling slog-term v2.4.1 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:140:24
[INFO] [stderr]     |
[INFO] [stderr] 140 |         F: FnOnce(&mut RecordDecorator) -> io::Result<()>;
[INFO] [stderr]     |                        ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn RecordDecorator`
[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/lib.rs:154:24
[INFO] [stderr]     |
[INFO] [stderr] 154 |         F: FnOnce(&mut RecordDecorator) -> io::Result<()>,
[INFO] [stderr]     |                        ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn RecordDecorator`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:206:30
[INFO] [stderr]     |
[INFO] [stderr] 206 | impl RecordDecorator for Box<RecordDecorator> {
[INFO] [stderr]     |                              ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn RecordDecorator`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:254:20
[INFO] [stderr]     |
[INFO] [stderr] 254 |     fn_timestamp: &ThreadSafeTimestampFn<Output = io::Result<()>>,
[INFO] [stderr]     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn ThreadSafeTimestampFn<Output = io::Result<()>>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:255:18
[INFO] [stderr]     |
[INFO] [stderr] 255 |     mut rd: &mut RecordDecorator,
[INFO] [stderr]     |                  ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn RecordDecorator`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:289:23
[INFO] [stderr]     |
[INFO] [stderr] 289 |     fn_timestamp: Box<ThreadSafeTimestampFn<Output = io::Result<()>>>,
[INFO] [stderr]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn ThreadSafeTimestampFn<Output = io::Result<()>>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:299:23
[INFO] [stderr]     |
[INFO] [stderr] 299 |     fn_timestamp: Box<ThreadSafeTimestampFn<Output = io::Result<()>>>,
[INFO] [stderr]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn ThreadSafeTimestampFn<Output = io::Result<()>>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:424:23
[INFO] [stderr]     |
[INFO] [stderr] 424 |     fn_timestamp: Box<ThreadSafeTimestampFn<Output = io::Result<()>>>,
[INFO] [stderr]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn ThreadSafeTimestampFn<Output = io::Result<()>>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:433:23
[INFO] [stderr]     |
[INFO] [stderr] 433 |     fn_timestamp: Box<ThreadSafeTimestampFn<Output = io::Result<()>>>,
[INFO] [stderr]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn ThreadSafeTimestampFn<Output = io::Result<()>>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:548:24
[INFO] [stderr]     |
[INFO] [stderr] 548 |     decorator: &'a mut RecordDecorator,
[INFO] [stderr]     |                        ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn RecordDecorator`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:555:20
[INFO] [stderr]     |
[INFO] [stderr] 555 |         d: &'a mut RecordDecorator,
[INFO] [stderr]     |                    ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn RecordDecorator`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:709:24
[INFO] [stderr]     |
[INFO] [stderr] 709 |     decorator: &'a mut RecordDecorator,
[INFO] [stderr]     |                        ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn RecordDecorator`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:716:20
[INFO] [stderr]     |
[INFO] [stderr] 716 |         d: &'a mut RecordDecorator,
[INFO] [stderr]     |                    ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn RecordDecorator`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:876:22
[INFO] [stderr]     |
[INFO] [stderr] 876 |     wrapped: &'a mut io::Write,
[INFO] [stderr]     |                      ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:881:29
[INFO] [stderr]     |
[INFO] [stderr] 881 |     fn new(wrapped: &'a mut io::Write) -> CountingWriter {
[INFO] [stderr]     |                             ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:921:15
[INFO] [stderr]     |
[INFO] [stderr] 921 |     : Fn(&mut io::Write) -> io::Result<()>
[INFO] [stderr]     |               ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:931:16
[INFO] [stderr]     |
[INFO] [stderr] 931 |     F: Fn(&mut io::Write) -> io::Result<()> + Send + Sync,
[INFO] [stderr]     |                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:942:33
[INFO] [stderr]     |
[INFO] [stderr] 942 | pub fn timestamp_local(io: &mut io::Write) -> io::Result<()> {
[INFO] [stderr]     |                                 ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:949:31
[INFO] [stderr]     |
[INFO] [stderr] 949 | pub fn timestamp_utc(io: &mut io::Write) -> io::Result<()> {
[INFO] [stderr]     |                               ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:1008:24
[INFO] [stderr]      |
[INFO] [stderr] 1008 |         F: FnOnce(&mut RecordDecorator) -> io::Result<()>,
[INFO] [stderr]      |                        ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn RecordDecorator`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:1098:24
[INFO] [stderr]      |
[INFO] [stderr] 1098 |         F: FnOnce(&mut RecordDecorator) -> io::Result<()>,
[INFO] [stderr]      |                        ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn RecordDecorator`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:1308:24
[INFO] [stderr]      |
[INFO] [stderr] 1308 |         F: FnOnce(&mut RecordDecorator) -> io::Result<()>,
[INFO] [stderr]      |                        ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn RecordDecorator`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.23s
[INFO] running `"docker" "inspect" "ada3fbadc826bedc94dc41a2fc8e6c6125fca5ab619c321b8d2747e281127375"`
[INFO] running `"docker" "rm" "-f" "ada3fbadc826bedc94dc41a2fc8e6c6125fca5ab619c321b8d2747e281127375"`
[INFO] [stdout] ada3fbadc826bedc94dc41a2fc8e6c6125fca5ab619c321b8d2747e281127375
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-6/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/slog-term/2.4.1:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] 4d44c7eda6bfa5fc84dee458bb04b75ba5d9e1e6e9136231b6bf652dce9d9b80
[INFO] running `"docker" "start" "-a" "4d44c7eda6bfa5fc84dee458bb04b75ba5d9e1e6e9136231b6bf652dce9d9b80"`
[INFO] [stderr]    Compiling slog-async v2.3.0
[INFO] [stderr]    Compiling slog-term v2.4.1 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:140:24
[INFO] [stderr]     |
[INFO] [stderr] 140 |         F: FnOnce(&mut RecordDecorator) -> io::Result<()>;
[INFO] [stderr]     |                        ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn RecordDecorator`
[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/lib.rs:154:24
[INFO] [stderr]     |
[INFO] [stderr] 154 |         F: FnOnce(&mut RecordDecorator) -> io::Result<()>,
[INFO] [stderr]     |                        ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn RecordDecorator`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:206:30
[INFO] [stderr]     |
[INFO] [stderr] 206 | impl RecordDecorator for Box<RecordDecorator> {
[INFO] [stderr]     |                              ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn RecordDecorator`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:254:20
[INFO] [stderr]     |
[INFO] [stderr] 254 |     fn_timestamp: &ThreadSafeTimestampFn<Output = io::Result<()>>,
[INFO] [stderr]     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn ThreadSafeTimestampFn<Output = io::Result<()>>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:255:18
[INFO] [stderr]     |
[INFO] [stderr] 255 |     mut rd: &mut RecordDecorator,
[INFO] [stderr]     |                  ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn RecordDecorator`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:289:23
[INFO] [stderr]     |
[INFO] [stderr] 289 |     fn_timestamp: Box<ThreadSafeTimestampFn<Output = io::Result<()>>>,
[INFO] [stderr]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn ThreadSafeTimestampFn<Output = io::Result<()>>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:299:23
[INFO] [stderr]     |
[INFO] [stderr] 299 |     fn_timestamp: Box<ThreadSafeTimestampFn<Output = io::Result<()>>>,
[INFO] [stderr]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn ThreadSafeTimestampFn<Output = io::Result<()>>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:424:23
[INFO] [stderr]     |
[INFO] [stderr] 424 |     fn_timestamp: Box<ThreadSafeTimestampFn<Output = io::Result<()>>>,
[INFO] [stderr]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn ThreadSafeTimestampFn<Output = io::Result<()>>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:433:23
[INFO] [stderr]     |
[INFO] [stderr] 433 |     fn_timestamp: Box<ThreadSafeTimestampFn<Output = io::Result<()>>>,
[INFO] [stderr]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn ThreadSafeTimestampFn<Output = io::Result<()>>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:548:24
[INFO] [stderr]     |
[INFO] [stderr] 548 |     decorator: &'a mut RecordDecorator,
[INFO] [stderr]     |                        ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn RecordDecorator`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:555:20
[INFO] [stderr]     |
[INFO] [stderr] 555 |         d: &'a mut RecordDecorator,
[INFO] [stderr]     |                    ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn RecordDecorator`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:709:24
[INFO] [stderr]     |
[INFO] [stderr] 709 |     decorator: &'a mut RecordDecorator,
[INFO] [stderr]     |                        ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn RecordDecorator`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:716:20
[INFO] [stderr]     |
[INFO] [stderr] 716 |         d: &'a mut RecordDecorator,
[INFO] [stderr]     |                    ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn RecordDecorator`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:876:22
[INFO] [stderr]     |
[INFO] [stderr] 876 |     wrapped: &'a mut io::Write,
[INFO] [stderr]     |                      ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:881:29
[INFO] [stderr]     |
[INFO] [stderr] 881 |     fn new(wrapped: &'a mut io::Write) -> CountingWriter {
[INFO] [stderr]     |                             ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:921:15
[INFO] [stderr]     |
[INFO] [stderr] 921 |     : Fn(&mut io::Write) -> io::Result<()>
[INFO] [stderr]     |               ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:931:16
[INFO] [stderr]     |
[INFO] [stderr] 931 |     F: Fn(&mut io::Write) -> io::Result<()> + Send + Sync,
[INFO] [stderr]     |                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:942:33
[INFO] [stderr]     |
[INFO] [stderr] 942 | pub fn timestamp_local(io: &mut io::Write) -> io::Result<()> {
[INFO] [stderr]     |                                 ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:949:31
[INFO] [stderr]     |
[INFO] [stderr] 949 | pub fn timestamp_utc(io: &mut io::Write) -> io::Result<()> {
[INFO] [stderr]     |                               ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:1008:24
[INFO] [stderr]      |
[INFO] [stderr] 1008 |         F: FnOnce(&mut RecordDecorator) -> io::Result<()>,
[INFO] [stderr]      |                        ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn RecordDecorator`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:1098:24
[INFO] [stderr]      |
[INFO] [stderr] 1098 |         F: FnOnce(&mut RecordDecorator) -> io::Result<()>,
[INFO] [stderr]      |                        ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn RecordDecorator`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:1308:24
[INFO] [stderr]      |
[INFO] [stderr] 1308 |         F: FnOnce(&mut RecordDecorator) -> io::Result<()>,
[INFO] [stderr]      |                        ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn RecordDecorator`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.48s
[INFO] running `"docker" "inspect" "4d44c7eda6bfa5fc84dee458bb04b75ba5d9e1e6e9136231b6bf652dce9d9b80"`
[INFO] running `"docker" "rm" "-f" "4d44c7eda6bfa5fc84dee458bb04b75ba5d9e1e6e9136231b6bf652dce9d9b80"`
[INFO] [stdout] 4d44c7eda6bfa5fc84dee458bb04b75ba5d9e1e6e9136231b6bf652dce9d9b80
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-6/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/slog-term/2.4.1:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-07-23" "test" "--frozen"`
[INFO] [stdout] 89ee9490348db984c806d0e557815a5366cd1f6f06a8dd9944175464f77ee9dd
[INFO] running `"docker" "start" "-a" "89ee9490348db984c806d0e557815a5366cd1f6f06a8dd9944175464f77ee9dd"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/slog_term-05580c2b287facaf
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/term-e76d416f6e63e1db
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests slog-term
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test src/lib.rs -  (line 31) ... ok
[INFO] [stdout] test src/lib.rs - PlainSyncDecorator (line 1059) ... ok
[INFO] [stdout] test src/lib.rs -  (line 85) ... ok
[INFO] [stdout] test src/lib.rs - PlainDecorator (line 963) ... ok
[INFO] [stdout] test src/lib.rs -  (line 55) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "89ee9490348db984c806d0e557815a5366cd1f6f06a8dd9944175464f77ee9dd"`
[INFO] running `"docker" "rm" "-f" "89ee9490348db984c806d0e557815a5366cd1f6f06a8dd9944175464f77ee9dd"`
[INFO] [stdout] 89ee9490348db984c806d0e557815a5366cd1f6f06a8dd9944175464f77ee9dd