[INFO] fetching crate fern_colored 0.6.1...
[INFO] checking fern_colored-0.6.1 against master#30f74ff0dc4d66debc8b50724c446f817e5f75f4 for pr-121848-1
[INFO] extracting crate fern_colored 0.6.1 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate fern_colored 0.6.1 on toolchain 30f74ff0dc4d66debc8b50724c446f817e5f75f4
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+30f74ff0dc4d66debc8b50724c446f817e5f75f4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate fern_colored 0.6.1
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate fern_colored 0.6.1
[INFO] tweaked toml for crates.io crate fern_colored 0.6.1 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate crates.io crate fern_colored 0.6.1 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" "+30f74ff0dc4d66debc8b50724c446f817e5f75f4" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded syslog v4.0.1
[INFO] [stderr]   Downloaded miniz_oxide v0.4.3
[INFO] [stderr]   Downloaded addr2line v0.14.0
[INFO] [stderr]   Downloaded syslog v3.3.0
[INFO] [stderr]   Downloaded reopen v0.3.0
[INFO] [stderr]   Downloaded unix_socket v0.5.0
[INFO] [stderr]   Downloaded signal-hook-registry v1.2.2
[INFO] [stderr]   Downloaded signal-hook v0.1.16
[INFO] [stderr]   Downloaded object v0.22.0
[INFO] [stderr]   Downloaded backtrace v0.3.55
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+30f74ff0dc4d66debc8b50724c446f817e5f75f4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] db4a4822921f21ee999e383628545dbee42878bbdab67da84febd6b42bdec42b
[INFO] running `Command { std: "docker" "start" "-a" "db4a4822921f21ee999e383628545dbee42878bbdab67da84febd6b42bdec42b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "db4a4822921f21ee999e383628545dbee42878bbdab67da84febd6b42bdec42b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "db4a4822921f21ee999e383628545dbee42878bbdab67da84febd6b42bdec42b", kill_on_drop: false }`
[INFO] [stdout] db4a4822921f21ee999e383628545dbee42878bbdab67da84febd6b42bdec42b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+30f74ff0dc4d66debc8b50724c446f817e5f75f4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9752838e9842e3573451385a6256862a17c4d97b4921fd22ae0183fe0ec8548a
[INFO] running `Command { std: "docker" "start" "-a" "9752838e9842e3573451385a6256862a17c4d97b4921fd22ae0183fe0ec8548a", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.80
[INFO] [stderr]     Checking remove_dir_all v0.5.3
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking fern_colored v0.6.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `AsRef` is imported redundantly
[INFO] [stdout]    --> src/lib.rs:203:5
[INFO] [stdout]     |
[INFO] [stdout] 203 |     convert::AsRef,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^
[INFO] [stdout]    --> /rustc/30f74ff0dc4d66debc8b50724c446f817e5f75f4/library/std/src/prelude/mod.rs:115:13
[INFO] [stdout]     |
[INFO] [stdout]     = note: the item `AsRef` is already defined here
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `log` is imported redundantly
[INFO] [stdout]  --> src/errors.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use log;
[INFO] [stdout]   |     ^^^ the item `log` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `log` is imported redundantly
[INFO] [stdout]   --> src/log_impl.rs:16:11
[INFO] [stdout]    |
[INFO] [stdout] 16 | use log::{self, Log};
[INFO] [stdout]    |           ^^^^ the item `log` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking tempdir v0.3.7
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `fern`
[INFO] [stdout]   --> tests/write_logging.rs:46:32
[INFO] [stdout]    |
[INFO] [stdout] 46 |     let (_max_level, logger) = fern::Dispatch::new()
[INFO] [stdout]    |                                ^^^^ use of undeclared crate or module `fern`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]    |
[INFO] [stdout] 2  + use fern_colored::Dispatch;
[INFO] [stdout]    |
[INFO] [stdout] help: if you import `Dispatch`, refer to it directly
[INFO] [stdout]    |
[INFO] [stdout] 46 -     let (_max_level, logger) = fern::Dispatch::new()
[INFO] [stdout] 46 +     let (_max_level, logger) = Dispatch::new()
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `fern`
[INFO] [stdout]  --> examples/cmd-program.rs:6:27
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let mut base_config = fern::Dispatch::new();
[INFO] [stdout]   |                           ^^^^ use of undeclared crate or module `fern`
[INFO] [stdout]   |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]   |
[INFO] [stdout] 1 + use fern_colored::Dispatch;
[INFO] [stdout]   |
[INFO] [stdout] help: if you import `Dispatch`, refer to it directly
[INFO] [stdout]   |
[INFO] [stdout] 6 -     let mut base_config = fern::Dispatch::new();
[INFO] [stdout] 6 +     let mut base_config = Dispatch::new();
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `fern`
[INFO] [stdout]   --> examples/cmd-program.rs:25:23
[INFO] [stdout]    |
[INFO] [stdout] 25 |     let file_config = fern::Dispatch::new()
[INFO] [stdout]    |                       ^^^^ use of undeclared crate or module `fern`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]    |
[INFO] [stdout] 1  + use fern_colored::Dispatch;
[INFO] [stdout]    |
[INFO] [stdout] help: if you import `Dispatch`, refer to it directly
[INFO] [stdout]    |
[INFO] [stdout] 25 -     let file_config = fern::Dispatch::new()
[INFO] [stdout] 25 +     let file_config = Dispatch::new()
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `fern`
[INFO] [stdout]   --> examples/cmd-program.rs:37:25
[INFO] [stdout]    |
[INFO] [stdout] 37 |     let stdout_config = fern::Dispatch::new()
[INFO] [stdout]    |                         ^^^^ use of undeclared crate or module `fern`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]    |
[INFO] [stdout] 1  + use fern_colored::Dispatch;
[INFO] [stdout]    |
[INFO] [stdout] help: if you import `Dispatch`, refer to it directly
[INFO] [stdout]    |
[INFO] [stdout] 37 -     let stdout_config = fern::Dispatch::new()
[INFO] [stdout] 37 +     let stdout_config = Dispatch::new()
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `fern`
[INFO] [stdout]   --> tests/global_logging.rs:69:5
[INFO] [stdout]    |
[INFO] [stdout] 69 |     fern::Dispatch::new()
[INFO] [stdout]    |     ^^^^ use of undeclared crate or module `fern`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]    |
[INFO] [stdout] 2  + use fern_colored::Dispatch;
[INFO] [stdout]    |
[INFO] [stdout] help: if you import `Dispatch`, refer to it directly
[INFO] [stdout]    |
[INFO] [stdout] 69 -     fern::Dispatch::new()
[INFO] [stdout] 69 +     Dispatch::new()
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `fern_colored` (test "write_logging") due to 2 previous errors
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `fern`
[INFO] [stdout]   --> examples/cmd-program.rs:35:16
[INFO] [stdout]    |
[INFO] [stdout] 35 |         .chain(fern::log_file("program.log")?);
[INFO] [stdout]    |                ^^^^ use of undeclared crate or module `fern`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `fern`
[INFO] [stdout]   --> tests/channel_logging.rs:14:32
[INFO] [stdout]    |
[INFO] [stdout] 14 |     let (_max_level, logger) = fern::Dispatch::new().chain(send).into_log();
[INFO] [stdout]    |                                ^^^^ use of undeclared crate or module `fern`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]    |
[INFO] [stdout] 2  + use fern_colored::Dispatch;
[INFO] [stdout]    |
[INFO] [stdout] help: if you import `Dispatch`, refer to it directly
[INFO] [stdout]    |
[INFO] [stdout] 14 -     let (_max_level, logger) = fern::Dispatch::new().chain(send).into_log();
[INFO] [stdout] 14 +     let (_max_level, logger) = Dispatch::new().chain(send).into_log();
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `fern`
[INFO] [stdout]  --> examples/cmd-program.rs:5:48
[INFO] [stdout]   |
[INFO] [stdout] 5 | fn setup_logging(verbosity: u64) -> Result<(), fern::InitError> {
[INFO] [stdout]   |                                                ^^^^ use of undeclared crate or module `fern`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 5 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `fern`
[INFO] [stdout]  --> tests/enabled_is_deep_check.rs:6:17
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let dummy = fern::Dispatch::new()
[INFO] [stdout]   |                 ^^^^ use of undeclared crate or module `fern`
[INFO] [stdout]   |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]   |
[INFO] [stdout] 2 + use fern_colored::Dispatch;
[INFO] [stdout]   |
[INFO] [stdout] help: if you import `Dispatch`, refer to it directly
[INFO] [stdout]   |
[INFO] [stdout] 6 -     let dummy = fern::Dispatch::new()
[INFO] [stdout] 6 +     let dummy = Dispatch::new()
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `fern`
[INFO] [stdout]   --> tests/enabled_is_deep_check.rs:10:18
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let stdout = fern::Dispatch::new()
[INFO] [stdout]    |                  ^^^^ use of undeclared crate or module `fern`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]    |
[INFO] [stdout] 2  + use fern_colored::Dispatch;
[INFO] [stdout]    |
[INFO] [stdout] help: if you import `Dispatch`, refer to it directly
[INFO] [stdout]    |
[INFO] [stdout] 10 -     let stdout = fern::Dispatch::new()
[INFO] [stdout] 10 +     let stdout = Dispatch::new()
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `fern`
[INFO] [stdout]   --> tests/enabled_is_deep_check.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |     fern::Dispatch::new()
[INFO] [stdout]    |     ^^^^ use of undeclared crate or module `fern`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]    |
[INFO] [stdout] 2  + use fern_colored::Dispatch;
[INFO] [stdout]    |
[INFO] [stdout] help: if you import `Dispatch`, refer to it directly
[INFO] [stdout]    |
[INFO] [stdout] 15 -     fern::Dispatch::new()
[INFO] [stdout] 15 +     Dispatch::new()
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `fern_colored` (example "cmd-program") due to 6 previous errors
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `fern_colored` (test "channel_logging") due to 2 previous errors
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `fern_colored` (test "enabled_is_deep_check") due to 4 previous errors
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `fern_colored` (test "global_logging") due to 2 previous errors
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `fern`
[INFO] [stdout]   --> examples/meta-logging.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     fern::Dispatch::new()
[INFO] [stdout]    |     ^^^^ use of undeclared crate or module `fern`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]    |
[INFO] [stdout] 5  + use fern_colored::Dispatch;
[INFO] [stdout]    |
[INFO] [stdout] help: if you import `Dispatch`, refer to it directly
[INFO] [stdout]    |
[INFO] [stdout] 10 -     fern::Dispatch::new()
[INFO] [stdout] 10 +     Dispatch::new()
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `fern`
[INFO] [stdout]   --> tests/panic_logging.rs:11:32
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let (_max_level, logger) = fern::Dispatch::new().chain(fern::Panic).into_log();
[INFO] [stdout]    |                                ^^^^ use of undeclared crate or module `fern`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]    |
[INFO] [stdout] 2  + use fern_colored::Dispatch;
[INFO] [stdout]    |
[INFO] [stdout] help: if you import `Dispatch`, refer to it directly
[INFO] [stdout]    |
[INFO] [stdout] 11 -     let (_max_level, logger) = fern::Dispatch::new().chain(fern::Panic).into_log();
[INFO] [stdout] 11 +     let (_max_level, logger) = Dispatch::new().chain(fern::Panic).into_log();
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `fern`
[INFO] [stdout]   --> examples/meta-logging.rs:13:16
[INFO] [stdout]    |
[INFO] [stdout] 13 |         .chain(fern::log_file("hello.txt").unwrap())
[INFO] [stdout]    |                ^^^^ use of undeclared crate or module `fern`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `fern`
[INFO] [stdout]   --> tests/panic_logging.rs:19:32
[INFO] [stdout]    |
[INFO] [stdout] 19 |     let (_max_level, logger) = fern::Dispatch::new()
[INFO] [stdout]    |                                ^^^^ use of undeclared crate or module `fern`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]    |
[INFO] [stdout] 2  + use fern_colored::Dispatch;
[INFO] [stdout]    |
[INFO] [stdout] help: if you import `Dispatch`, refer to it directly
[INFO] [stdout]    |
[INFO] [stdout] 19 -     let (_max_level, logger) = fern::Dispatch::new()
[INFO] [stdout] 19 +     let (_max_level, logger) = Dispatch::new()
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `fern_colored` (example "meta-logging") due to 3 previous errors
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `fern`
[INFO] [stdout]   --> tests/panic_logging.rs:21:13
[INFO] [stdout]    |
[INFO] [stdout] 21 |             fern::Dispatch::new()
[INFO] [stdout]    |             ^^^^ use of undeclared crate or module `fern`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]    |
[INFO] [stdout] 2  + use fern_colored::Dispatch;
[INFO] [stdout]    |
[INFO] [stdout] help: if you import `Dispatch`, refer to it directly
[INFO] [stdout]    |
[INFO] [stdout] 21 -             fern::Dispatch::new()
[INFO] [stdout] 21 +             Dispatch::new()
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `fern`
[INFO] [stdout]   --> tests/panic_logging.rs:11:60
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let (_max_level, logger) = fern::Dispatch::new().chain(fern::Panic).into_log();
[INFO] [stdout]    |                                                            ^^^^ use of undeclared crate or module `fern`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `fern`
[INFO] [stdout]   --> tests/panic_logging.rs:23:24
[INFO] [stdout]    |
[INFO] [stdout] 23 |                 .chain(fern::Panic),
[INFO] [stdout]    |                        ^^^^ use of undeclared crate or module `fern`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 5 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `fern_colored` (test "panic_logging") due to 6 previous errors
[INFO] running `Command { std: "docker" "inspect" "9752838e9842e3573451385a6256862a17c4d97b4921fd22ae0183fe0ec8548a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9752838e9842e3573451385a6256862a17c4d97b4921fd22ae0183fe0ec8548a", kill_on_drop: false }`
[INFO] [stdout] 9752838e9842e3573451385a6256862a17c4d97b4921fd22ae0183fe0ec8548a
