[INFO] crate slog-stream 1.2.1 is already in cache
[INFO] extracting crate slog-stream 1.2.1 into work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/reg/slog-stream/1.2.1
[INFO] extracting crate slog-stream 1.2.1 into work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/reg/slog-stream/1.2.1
[INFO] validating manifest of slog-stream-1.2.1 on toolchain master#c43d03a19f326f4a323569328cc501e86eb6d22e
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of slog-stream-1.2.1 on toolchain try#75eff020d0923c035c2fe220db4a0465cd847048
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+75eff020d0923c035c2fe220db4a0465cd847048-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing slog-stream-1.2.1
[INFO] finished frobbing slog-stream-1.2.1
[INFO] frobbed toml for slog-stream-1.2.1 written to work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/reg/slog-stream/1.2.1/Cargo.toml
[INFO] started frobbing slog-stream-1.2.1
[INFO] finished frobbing slog-stream-1.2.1
[INFO] frobbed toml for slog-stream-1.2.1 written to work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/reg/slog-stream/1.2.1/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+75eff020d0923c035c2fe220db4a0465cd847048-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+75eff020d0923c035c2fe220db4a0465cd847048-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] checking slog-stream-1.2.1 against master#c43d03a19f326f4a323569328cc501e86eb6d22e for pr-63565
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63565/worker-3/master#c43d03a19f326f4a323569328cc501e86eb6d22e:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/reg/slog-stream/1.2.1:/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=forbid" "-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" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 9359d0a9fbb8541de4c535054c113abc984975aa874c34d883dbec68d9cf4b2c
[INFO] running `"docker" "start" "-a" "9359d0a9fbb8541de4c535054c113abc984975aa874c34d883dbec68d9cf4b2c"`
[INFO] [stderr]     Checking slog v1.7.1
[INFO] [stderr]     Checking slog-extra v0.1.2
[INFO] [stderr]     Checking slog-stream v1.2.1 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]  --> lib.rs:8:1
[INFO] [stderr]   |
[INFO] [stderr] 8 | #[macro_use]
[INFO] [stderr]   | ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> format.rs:6:24
[INFO] [stderr]   |
[INFO] [stderr] 6 |               io: &mut io::Write,
[INFO] [stderr]   |                        ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[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]   --> format.rs:30:32
[INFO] [stderr]    |
[INFO] [stderr] 30 |     fn fmt_msg(&self, io: &mut io::Write, f: &Fn(&mut io::Write) -> io::Result<()>) -> 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]   --> format.rs:30:47
[INFO] [stderr]    |
[INFO] [stderr] 30 |     fn fmt_msg(&self, io: &mut io::Write, f: &Fn(&mut io::Write) -> io::Result<()>) -> io::Result<()> {
[INFO] [stderr]    |                                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut io::Write) -> io::Result<()>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> format.rs:30:55
[INFO] [stderr]    |
[INFO] [stderr] 30 |     fn fmt_msg(&self, io: &mut io::Write, f: &Fn(&mut io::Write) -> io::Result<()>) -> 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]   --> format.rs:34:32
[INFO] [stderr]    |
[INFO] [stderr] 34 |     fn fmt_key(&self, io: &mut io::Write, f: &Fn(&mut io::Write) -> io::Result<()>) -> 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]   --> format.rs:34:47
[INFO] [stderr]    |
[INFO] [stderr] 34 |     fn fmt_key(&self, io: &mut io::Write, f: &Fn(&mut io::Write) -> io::Result<()>) -> io::Result<()> {
[INFO] [stderr]    |                                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut io::Write) -> io::Result<()>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> format.rs:34:55
[INFO] [stderr]    |
[INFO] [stderr] 34 |     fn fmt_key(&self, io: &mut io::Write, f: &Fn(&mut io::Write) -> io::Result<()>) -> 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]   --> format.rs:38:38
[INFO] [stderr]    |
[INFO] [stderr] 38 |     fn fmt_separator(&self, io: &mut io::Write, f: &Fn(&mut io::Write) -> io::Result<()>) -> 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]   --> format.rs:38:53
[INFO] [stderr]    |
[INFO] [stderr] 38 |     fn fmt_separator(&self, io: &mut io::Write, f: &Fn(&mut io::Write) -> io::Result<()>) -> io::Result<()> {
[INFO] [stderr]    |                                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut io::Write) -> io::Result<()>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> format.rs:38:61
[INFO] [stderr]    |
[INFO] [stderr] 38 |     fn fmt_separator(&self, io: &mut io::Write, f: &Fn(&mut io::Write) -> io::Result<()>) -> 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]   --> format.rs:42:34
[INFO] [stderr]    |
[INFO] [stderr] 42 |     fn fmt_value(&self, io: &mut io::Write, f: &Fn(&mut io::Write) -> io::Result<()>) -> 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]   --> format.rs:42:49
[INFO] [stderr]    |
[INFO] [stderr] 42 |     fn fmt_value(&self, io: &mut io::Write, f: &Fn(&mut io::Write) -> io::Result<()>) -> io::Result<()> {
[INFO] [stderr]    |                                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut io::Write) -> io::Result<()>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> format.rs:42:57
[INFO] [stderr]    |
[INFO] [stderr] 42 |     fn fmt_value(&self, io: &mut io::Write, f: &Fn(&mut io::Write) -> io::Result<()>) -> 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]   --> format.rs:46:38
[INFO] [stderr]    |
[INFO] [stderr] 46 |     fn fmt_timestamp(&self, io: &mut io::Write, f : &Fn(&mut io::Write) -> io::Result<()>) -> 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]   --> format.rs:46:54
[INFO] [stderr]    |
[INFO] [stderr] 46 |     fn fmt_timestamp(&self, io: &mut io::Write, f : &Fn(&mut io::Write) -> io::Result<()>) -> io::Result<()> {
[INFO] [stderr]    |                                                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut io::Write) -> io::Result<()>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> format.rs:46:62
[INFO] [stderr]    |
[INFO] [stderr] 46 |     fn fmt_timestamp(&self, io: &mut io::Write, f : &Fn(&mut io::Write) -> io::Result<()>) -> 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]   --> format.rs:50:34
[INFO] [stderr]    |
[INFO] [stderr] 50 |     fn fmt_level(&self, io: &mut io::Write, f: &Fn(&mut io::Write) -> io::Result<()>) -> 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]   --> format.rs:50:49
[INFO] [stderr]    |
[INFO] [stderr] 50 |     fn fmt_level(&self, io: &mut io::Write, f: &Fn(&mut io::Write) -> io::Result<()>) -> io::Result<()> {
[INFO] [stderr]    |                                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut io::Write) -> io::Result<()>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> format.rs:50:57
[INFO] [stderr]    |
[INFO] [stderr] 50 |     fn fmt_level(&self, io: &mut io::Write, f: &Fn(&mut io::Write) -> io::Result<()>) -> io::Result<()> {
[INFO] [stderr]    |                                                         ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]  --> lib.rs:8:1
[INFO] [stderr]   |
[INFO] [stderr] 8 | #[macro_use]
[INFO] [stderr]   | ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> format.rs:6:24
[INFO] [stderr]   |
[INFO] [stderr] 6 |               io: &mut io::Write,
[INFO] [stderr]   |                        ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[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]   --> format.rs:30:32
[INFO] [stderr]    |
[INFO] [stderr] 30 |     fn fmt_msg(&self, io: &mut io::Write, f: &Fn(&mut io::Write) -> io::Result<()>) -> 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]   --> format.rs:30:47
[INFO] [stderr]    |
[INFO] [stderr] 30 |     fn fmt_msg(&self, io: &mut io::Write, f: &Fn(&mut io::Write) -> io::Result<()>) -> io::Result<()> {
[INFO] [stderr]    |                                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut io::Write) -> io::Result<()>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> format.rs:30:55
[INFO] [stderr]    |
[INFO] [stderr] 30 |     fn fmt_msg(&self, io: &mut io::Write, f: &Fn(&mut io::Write) -> io::Result<()>) -> 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]   --> format.rs:34:32
[INFO] [stderr]    |
[INFO] [stderr] 34 |     fn fmt_key(&self, io: &mut io::Write, f: &Fn(&mut io::Write) -> io::Result<()>) -> 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]   --> format.rs:34:47
[INFO] [stderr]    |
[INFO] [stderr] 34 |     fn fmt_key(&self, io: &mut io::Write, f: &Fn(&mut io::Write) -> io::Result<()>) -> io::Result<()> {
[INFO] [stderr]    |                                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut io::Write) -> io::Result<()>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> format.rs:34:55
[INFO] [stderr]    |
[INFO] [stderr] 34 |     fn fmt_key(&self, io: &mut io::Write, f: &Fn(&mut io::Write) -> io::Result<()>) -> 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]   --> format.rs:38:38
[INFO] [stderr]    |
[INFO] [stderr] 38 |     fn fmt_separator(&self, io: &mut io::Write, f: &Fn(&mut io::Write) -> io::Result<()>) -> 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]   --> format.rs:38:53
[INFO] [stderr]    |
[INFO] [stderr] 38 |     fn fmt_separator(&self, io: &mut io::Write, f: &Fn(&mut io::Write) -> io::Result<()>) -> io::Result<()> {
[INFO] [stderr]    |                                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut io::Write) -> io::Result<()>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> format.rs:38:61
[INFO] [stderr]    |
[INFO] [stderr] 38 |     fn fmt_separator(&self, io: &mut io::Write, f: &Fn(&mut io::Write) -> io::Result<()>) -> 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]   --> format.rs:42:34
[INFO] [stderr]    |
[INFO] [stderr] 42 |     fn fmt_value(&self, io: &mut io::Write, f: &Fn(&mut io::Write) -> io::Result<()>) -> 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]   --> format.rs:42:49
[INFO] [stderr]    |
[INFO] [stderr] 42 |     fn fmt_value(&self, io: &mut io::Write, f: &Fn(&mut io::Write) -> io::Result<()>) -> io::Result<()> {
[INFO] [stderr]    |                                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut io::Write) -> io::Result<()>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> format.rs:42:57
[INFO] [stderr]    |
[INFO] [stderr] 42 |     fn fmt_value(&self, io: &mut io::Write, f: &Fn(&mut io::Write) -> io::Result<()>) -> 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]   --> format.rs:46:38
[INFO] [stderr]    |
[INFO] [stderr] 46 |     fn fmt_timestamp(&self, io: &mut io::Write, f : &Fn(&mut io::Write) -> io::Result<()>) -> 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]   --> format.rs:46:54
[INFO] [stderr]    |
[INFO] [stderr] 46 |     fn fmt_timestamp(&self, io: &mut io::Write, f : &Fn(&mut io::Write) -> io::Result<()>) -> io::Result<()> {
[INFO] [stderr]    |                                                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut io::Write) -> io::Result<()>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> format.rs:46:62
[INFO] [stderr]    |
[INFO] [stderr] 46 |     fn fmt_timestamp(&self, io: &mut io::Write, f : &Fn(&mut io::Write) -> io::Result<()>) -> 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]   --> format.rs:50:34
[INFO] [stderr]    |
[INFO] [stderr] 50 |     fn fmt_level(&self, io: &mut io::Write, f: &Fn(&mut io::Write) -> io::Result<()>) -> 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]   --> format.rs:50:49
[INFO] [stderr]    |
[INFO] [stderr] 50 |     fn fmt_level(&self, io: &mut io::Write, f: &Fn(&mut io::Write) -> io::Result<()>) -> io::Result<()> {
[INFO] [stderr]    |                                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut io::Write) -> io::Result<()>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> format.rs:50:57
[INFO] [stderr]    |
[INFO] [stderr] 50 |     fn fmt_level(&self, io: &mut io::Write, f: &Fn(&mut io::Write) -> io::Result<()>) -> io::Result<()> {
[INFO] [stderr]    |                                                         ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.80s
[INFO] running `"docker" "inspect" "9359d0a9fbb8541de4c535054c113abc984975aa874c34d883dbec68d9cf4b2c"`
[INFO] running `"docker" "rm" "-f" "9359d0a9fbb8541de4c535054c113abc984975aa874c34d883dbec68d9cf4b2c"`
[INFO] [stdout] 9359d0a9fbb8541de4c535054c113abc984975aa874c34d883dbec68d9cf4b2c