tracing-tree 0.1.1

a tracing layer that represents prints a heirarchal tree of spans and events.
Documentation
Build #265440 2020-06-27T19:36:10.247089+00:00 
# rustc version
rustc 1.46.0-nightly (7750c3d46 2020-06-26)
# docs.rs version
docsrs 0.6.0 (116821e 2020-06-24)

# build log
[INFO] running `Command { std: "docker" "create" "-v" "/home/cratesfyi/workspace/builds/tracing-tree-0.1.1/target:/opt/rustwide/target:rw,Z" "-v" "/home/cratesfyi/workspace/builds/tracing-tree-0.1.1/source:/opt/rustwide/workdir:ro,Z" "-v" "/home/cratesfyi/workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/home/cratesfyi/workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1001" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "RUSTFLAGS=" "-e" "RUSTDOCFLAGS=-Z unstable-options --resource-suffix -20200626-1.46.0-nightly-7750c3d46 --static-root-path / --cap-lints warn --extern-html-root-url tracing_subscriber=https://docs.rs/tracing-subscriber/0.2.3 --extern-html-root-url ansi_term=https://docs.rs/ansi_term/0.12.1 --extern-html-root-url atty=https://docs.rs/atty/0.2.14 --extern-html-root-url quanta=https://docs.rs/quanta/0.3.1 --extern-html-root-url chrono=https://docs.rs/chrono/0.4.10 --extern-html-root-url termcolor=https://docs.rs/termcolor/1.1.0 --extern-html-root-url tracing=https://docs.rs/tracing/0.1.12" "-e" "DOCS_RS=1" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "3221225472" "--cpus" "2" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+nightly" "doc" "--lib" "--no-deps" "-j2", kill_on_drop: false }`
[INFO] [stdout] 8305b5ec1c1e9180da601aa01071a580cbf7d26d2956d26568f7bf4465d66750
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "8305b5ec1c1e9180da601aa01071a580cbf7d26d2956d26568f7bf4465d66750", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]    Compiling proc-macro2 v1.0.8
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling serde v1.0.104
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]    Compiling memchr v2.3.0
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking regex-syntax v0.6.14
[INFO] [stderr]    Compiling ryu v1.0.2
[INFO] [stderr]    Compiling syn v1.0.14
[INFO] [stderr]     Checking utf8-ranges v1.0.4
[INFO] [stderr]     Checking itoa v0.4.5
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking smallvec v1.2.0
[INFO] [stderr]     Checking termcolor v1.1.0
[INFO] [stderr]     Checking ansi_term v0.12.1
[INFO] [stderr]     Checking tracing-core v0.1.9
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking sharded-slab v0.0.8
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking quanta v0.3.1
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking aho-corasick v0.7.7
[INFO] [stderr]     Checking regex-automata v0.1.8
[INFO] [stderr]     Checking tracing-log v0.1.1
[INFO] [stderr]     Checking regex v1.3.4
[INFO] [stderr]     Checking serde_json v1.0.46
[INFO] [stderr]     Checking tracing-serde v0.1.1
[INFO] [stderr]     Checking matchers v0.0.1
[INFO] [stderr]     Checking chrono v0.4.10
[INFO] [stderr]     Checking tracing-subscriber v0.2.3
[INFO] [stderr]    Compiling tracing-attributes v0.1.6
[INFO] [stderr]     Checking tracing v0.1.12
[INFO] [stderr]  Documenting tracing-tree v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 35.60s
[INFO] running `Command { std: "docker" "inspect" "8305b5ec1c1e9180da601aa01071a580cbf7d26d2956d26568f7bf4465d66750", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8305b5ec1c1e9180da601aa01071a580cbf7d26d2956d26568f7bf4465d66750", kill_on_drop: false }`
[INFO] [stdout] 8305b5ec1c1e9180da601aa01071a580cbf7d26d2956d26568f7bf4465d66750