[INFO] cloning repository https://github.com/sabahtalateh/hello_async
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sabahtalateh/hello_async" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsabahtalateh%2Fhello_async", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsabahtalateh%2Fhello_async'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] cedd7306a8da53fcd0028f9ab8c98329d5003219
[INFO] documenting sabahtalateh/hello_async against 1.54.0 for beta-1.55-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsabahtalateh%2Fhello_async" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sabahtalateh/hello_async on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/sabahtalateh/hello_async
[INFO] finished tweaking git repo https://github.com/sabahtalateh/hello_async
[INFO] tweaked toml for git repo https://github.com/sabahtalateh/hello_async written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/sabahtalateh/hello_async already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8d5f51e25cb303f1d27aeb7b174a4d1693b0dbf5b3859e8cef2b257580b7a95b
[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" "8d5f51e25cb303f1d27aeb7b174a4d1693b0dbf5b3859e8cef2b257580b7a95b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8d5f51e25cb303f1d27aeb7b174a4d1693b0dbf5b3859e8cef2b257580b7a95b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8d5f51e25cb303f1d27aeb7b174a4d1693b0dbf5b3859e8cef2b257580b7a95b", kill_on_drop: false }`
[INFO] [stdout] 8d5f51e25cb303f1d27aeb7b174a4d1693b0dbf5b3859e8cef2b257580b7a95b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bf2c20ceeb892eb61039d7a9978a246a0797fc0c247f54a45745964db4467e21
[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" "bf2c20ceeb892eb61039d7a9978a246a0797fc0c247f54a45745964db4467e21", kill_on_drop: false }`
[INFO] [stderr]     Checking mio v0.6.19
[INFO] [stderr]     Checking tokio-io v0.1.12
[INFO] [stderr]     Checking tokio-threadpool v0.1.15
[INFO] [stderr]     Checking tokio-codec v0.1.1
[INFO] [stderr]     Checking tokio-fs v0.1.6
[INFO] [stderr]     Checking tokio-reactor v0.1.9
[INFO] [stderr]     Checking mio-uds v0.6.7
[INFO] [stderr]     Checking tokio-udp v0.1.3
[INFO] [stderr]     Checking tokio-uds v0.2.5
[INFO] [stderr]     Checking tokio-tcp v0.1.3
[INFO] [stderr]     Checking tokio v0.1.22
[INFO] [stderr]     Checking tokio-core v0.1.17
[INFO] [stderr]  Documenting hello_async v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]   --> src/bin/tokio_read_timeout.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 |     ;
[INFO] [stdout]    |     ^ help: remove this semicolon
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]   --> src/bin/tokio_spawn_cout_bytes_read.rs:22:6
[INFO] [stdout]    |
[INFO] [stdout] 22 |     };
[INFO] [stdout]    |      ^ help: remove this semicolon
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not document `hello_async`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name tokio_write_hello src/bin/tokio_write_hello.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern bytes=/opt/rustwide/target/debug/deps/libbytes-dc549feff340e1d2.rmeta --extern futures=/opt/rustwide/target/debug/deps/libfutures-2e1b54ba925fb398.rmeta --extern mio=/opt/rustwide/target/debug/deps/libmio-eaea1e88757cce08.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-5420111abece4ffd.rmeta --extern tokio=/opt/rustwide/target/debug/deps/libtokio-cc80fa6165a9a894.rmeta --extern tokio_core=/opt/rustwide/target/debug/deps/libtokio_core-c2cd710d7e01994d.rmeta --extern tokio_io=/opt/rustwide/target/debug/deps/libtokio_io-833c125e48080713.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: unresolved link to `0`
[INFO] [stdout]   --> src/bin/tokio_ping_pong_2.rs:13:6
[INFO] [stdout]    |
[INFO] [stdout] 13 | //! [0] entering ping
[INFO] [stdout]    |      ^ no item named `0` in scope
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(rustdoc::broken_intra_doc_links)]` on by default
[INFO] [stdout]    = help: to escape `[` and `]` characters, add '\' before them like `\[` or `\]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unresolved link to `0`
[INFO] [stdout]   --> src/bin/tokio_ping_pong_2.rs:14:6
[INFO] [stdout]    |
[INFO] [stdout] 14 | //! [0] entering recv_pong delay 9.361s
[INFO] [stdout]    |      ^ no item named `0` in scope
[INFO] [stdout]    |
[INFO] [stdout]    = help: to escape `[` and `]` characters, add '\' before them like `\[` or `\]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unresolved link to `1`
[INFO] [stdout]   --> src/bin/tokio_ping_pong_2.rs:15:6
[INFO] [stdout]    |
[INFO] [stdout] 15 | //! [1] entering ping
[INFO] [stdout]    |      ^ no item named `1` in scope
[INFO] [stdout]    |
[INFO] [stdout]    = help: to escape `[` and `]` characters, add '\' before them like `\[` or `\]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unresolved link to `1`
[INFO] [stdout]   --> src/bin/tokio_ping_pong_2.rs:16:6
[INFO] [stdout]    |
[INFO] [stdout] 16 | //! [1] entering recv_pong delay 4.854s
[INFO] [stdout]    |      ^ no item named `1` in scope
[INFO] [stdout]    |
[INFO] [stdout]    = help: to escape `[` and `]` characters, add '\' before them like `\[` or `\]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unresolved link to `2`
[INFO] [stdout]   --> src/bin/tokio_ping_pong_2.rs:17:6
[INFO] [stdout]    |
[INFO] [stdout] 17 | //! [2] entering ping
[INFO] [stdout]    |      ^ no item named `2` in scope
[INFO] [stdout]    |
[INFO] [stdout]    = help: to escape `[` and `]` characters, add '\' before them like `\[` or `\]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unresolved link to `2`
[INFO] [stdout]   --> src/bin/tokio_ping_pong_2.rs:18:6
[INFO] [stdout]    |
[INFO] [stdout] 18 | //! [2] entering recv_pong delay 4.719s
[INFO] [stdout]    |      ^ no item named `2` in scope
[INFO] [stdout]    |
[INFO] [stdout]    = help: to escape `[` and `]` characters, add '\' before them like `\[` or `\]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unresolved link to `3`
[INFO] [stdout]   --> src/bin/tokio_ping_pong_2.rs:19:6
[INFO] [stdout]    |
[INFO] [stdout] 19 | //! [3] entering ping
[INFO] [stdout]    |      ^ no item named `3` in scope
[INFO] [stdout]    |
[INFO] [stdout]    = help: to escape `[` and `]` characters, add '\' before them like `\[` or `\]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unresolved link to `3`
[INFO] [stdout]   --> src/bin/tokio_ping_pong_2.rs:20:6
[INFO] [stdout]    |
[INFO] [stdout] 20 | //! [3] entering recv_pong delay 8.182s
[INFO] [stdout]    |      ^ no item named `3` in scope
[INFO] [stdout]    |
[INFO] [stdout]    = help: to escape `[` and `]` characters, add '\' before them like `\[` or `\]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unresolved link to `4`
[INFO] [stdout]   --> src/bin/tokio_ping_pong_2.rs:21:6
[INFO] [stdout]    |
[INFO] [stdout] 21 | //! [4] entering ping
[INFO] [stdout]    |      ^ no item named `4` in scope
[INFO] [stdout]    |
[INFO] [stdout]    = help: to escape `[` and `]` characters, add '\' before them like `\[` or `\]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unresolved link to `4`
[INFO] [stdout]   --> src/bin/tokio_ping_pong_2.rs:22:6
[INFO] [stdout]    |
[INFO] [stdout] 22 | //! [4] entering recv_pong delay 9.642s
[INFO] [stdout]    |      ^ no item named `4` in scope
[INFO] [stdout]    |
[INFO] [stdout]    = help: to escape `[` and `]` characters, add '\' before them like `\[` or `\]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unresolved link to `5`
[INFO] [stdout]   --> src/bin/tokio_ping_pong_2.rs:23:6
[INFO] [stdout]    |
[INFO] [stdout] 23 | //! [5] entering ping
[INFO] [stdout]    |      ^ no item named `5` in scope
[INFO] [stdout]    |
[INFO] [stdout]    = help: to escape `[` and `]` characters, add '\' before them like `\[` or `\]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unresolved link to `5`
[INFO] [stdout]   --> src/bin/tokio_ping_pong_2.rs:24:6
[INFO] [stdout]    |
[INFO] [stdout] 24 | //! [5] entering recv_pong delay 2.676s
[INFO] [stdout]    |      ^ no item named `5` in scope
[INFO] [stdout]    |
[INFO] [stdout]    = help: to escape `[` and `]` characters, add '\' before them like `\[` or `\]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unresolved link to `8`
[INFO] [stdout]   --> src/bin/tokio_ping_pong_2.rs:25:6
[INFO] [stdout]    |
[INFO] [stdout] 25 | //! [8] entering ping
[INFO] [stdout]    |      ^ no item named `8` in scope
[INFO] [stdout]    |
[INFO] [stdout]    = help: to escape `[` and `]` characters, add '\' before them like `\[` or `\]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unresolved link to `8`
[INFO] [stdout]   --> src/bin/tokio_ping_pong_2.rs:26:6
[INFO] [stdout]    |
[INFO] [stdout] 26 | //! [8] entering recv_pong delay 5.149s
[INFO] [stdout]    |      ^ no item named `8` in scope
[INFO] [stdout]    |
[INFO] [stdout]    = help: to escape `[` and `]` characters, add '\' before them like `\[` or `\]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unresolved link to `6`
[INFO] [stdout]   --> src/bin/tokio_ping_pong_2.rs:27:6
[INFO] [stdout]    |
[INFO] [stdout] 27 | //! [6] entering ping
[INFO] [stdout]    |      ^ no item named `6` in scope
[INFO] [stdout]    |
[INFO] [stdout]    = help: to escape `[` and `]` characters, add '\' before them like `\[` or `\]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unresolved link to `6`
[INFO] [stdout]   --> src/bin/tokio_ping_pong_2.rs:28:6
[INFO] [stdout]    |
[INFO] [stdout] 28 | //! [6] entering recv_pong delay 7.299s
[INFO] [stdout]    |      ^ no item named `6` in scope
[INFO] [stdout]    |
[INFO] [stdout]    = help: to escape `[` and `]` characters, add '\' before them like `\[` or `\]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unresolved link to `9`
[INFO] [stdout]   --> src/bin/tokio_ping_pong_2.rs:29:6
[INFO] [stdout]    |
[INFO] [stdout] 29 | //! [9] entering ping
[INFO] [stdout]    |      ^ no item named `9` in scope
[INFO] [stdout]    |
[INFO] [stdout]    = help: to escape `[` and `]` characters, add '\' before them like `\[` or `\]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unresolved link to `9`
[INFO] [stdout]   --> src/bin/tokio_ping_pong_2.rs:30:6
[INFO] [stdout]    |
[INFO] [stdout] 30 | //! [9] entering recv_pong delay 5.908s
[INFO] [stdout]    |      ^ no item named `9` in scope
[INFO] [stdout]    |
[INFO] [stdout]    = help: to escape `[` and `]` characters, add '\' before them like `\[` or `\]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unresolved link to `7`
[INFO] [stdout]   --> src/bin/tokio_ping_pong_2.rs:31:6
[INFO] [stdout]    |
[INFO] [stdout] 31 | //! [7] entering ping
[INFO] [stdout]    |      ^ no item named `7` in scope
[INFO] [stdout]    |
[INFO] [stdout]    = help: to escape `[` and `]` characters, add '\' before them like `\[` or `\]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unresolved link to `7`
[INFO] [stdout]   --> src/bin/tokio_ping_pong_2.rs:32:6
[INFO] [stdout]    |
[INFO] [stdout] 32 | //! [7] entering recv_pong delay 273ms
[INFO] [stdout]    |      ^ no item named `7` in scope
[INFO] [stdout]    |
[INFO] [stdout]    = help: to escape `[` and `]` characters, add '\' before them like `\[` or `\]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unresolved link to `7`
[INFO] [stdout]   --> src/bin/tokio_ping_pong_2.rs:33:6
[INFO] [stdout]    |
[INFO] [stdout] 33 | //! [7] >>> rtt = 275.67322ms
[INFO] [stdout]    |      ^ no item named `7` in scope
[INFO] [stdout]    |
[INFO] [stdout]    = help: to escape `[` and `]` characters, add '\' before them like `\[` or `\]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unresolved link to `5`
[INFO] [stdout]   --> src/bin/tokio_ping_pong_2.rs:34:6
[INFO] [stdout]    |
[INFO] [stdout] 34 | //! [5] >>> rtt = 2.679343764s
[INFO] [stdout]    |      ^ no item named `5` in scope
[INFO] [stdout]    |
[INFO] [stdout]    = help: to escape `[` and `]` characters, add '\' before them like `\[` or `\]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unresolved link to `2`
[INFO] [stdout]   --> src/bin/tokio_ping_pong_2.rs:35:6
[INFO] [stdout]    |
[INFO] [stdout] 35 | //! [2] >>> rtt = 4.72073866s
[INFO] [stdout]    |      ^ no item named `2` in scope
[INFO] [stdout]    |
[INFO] [stdout]    = help: to escape `[` and `]` characters, add '\' before them like `\[` or `\]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unresolved link to `1`
[INFO] [stdout]   --> src/bin/tokio_ping_pong_2.rs:36:6
[INFO] [stdout]    |
[INFO] [stdout] 36 | //! [1] >>> rtt = 4.855222603s
[INFO] [stdout]    |      ^ no item named `1` in scope
[INFO] [stdout]    |
[INFO] [stdout]    = help: to escape `[` and `]` characters, add '\' before them like `\[` or `\]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unresolved link to `8`
[INFO] [stdout]   --> src/bin/tokio_ping_pong_2.rs:37:6
[INFO] [stdout]    |
[INFO] [stdout] 37 | //! [8] >>> rtt = 5.149836229s
[INFO] [stdout]    |      ^ no item named `8` in scope
[INFO] [stdout]    |
[INFO] [stdout]    = help: to escape `[` and `]` characters, add '\' before them like `\[` or `\]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unresolved link to `9`
[INFO] [stdout]   --> src/bin/tokio_ping_pong_2.rs:38:6
[INFO] [stdout]    |
[INFO] [stdout] 38 | //! [9] >>> rtt = 5.910623536s
[INFO] [stdout]    |      ^ no item named `9` in scope
[INFO] [stdout]    |
[INFO] [stdout]    = help: to escape `[` and `]` characters, add '\' before them like `\[` or `\]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unresolved link to `6`
[INFO] [stdout]   --> src/bin/tokio_ping_pong_2.rs:39:6
[INFO] [stdout]    |
[INFO] [stdout] 39 | //! [6] >>> rtt = 7.301647815s
[INFO] [stdout]    |      ^ no item named `6` in scope
[INFO] [stdout]    |
[INFO] [stdout]    = help: to escape `[` and `]` characters, add '\' before them like `\[` or `\]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unresolved link to `3`
[INFO] [stdout]   --> src/bin/tokio_ping_pong_2.rs:40:6
[INFO] [stdout]    |
[INFO] [stdout] 40 | //! [3] >>> rtt = 8.183006022s
[INFO] [stdout]    |      ^ no item named `3` in scope
[INFO] [stdout]    |
[INFO] [stdout]    = help: to escape `[` and `]` characters, add '\' before them like `\[` or `\]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unresolved link to `0`
[INFO] [stdout]   --> src/bin/tokio_ping_pong_2.rs:41:6
[INFO] [stdout]    |
[INFO] [stdout] 41 | //! [0] >>> rtt = 9.363908809s
[INFO] [stdout]    |      ^ no item named `0` in scope
[INFO] [stdout]    |
[INFO] [stdout]    = help: to escape `[` and `]` characters, add '\' before them like `\[` or `\]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unresolved link to `4`
[INFO] [stdout]   --> src/bin/tokio_ping_pong_2.rs:42:6
[INFO] [stdout]    |
[INFO] [stdout] 42 | //! [4] >>> rtt = 9.644285966s
[INFO] [stdout]    |      ^ no item named `4` in scope
[INFO] [stdout]    |
[INFO] [stdout]    = help: to escape `[` and `]` characters, add '\' before them like `\[` or `\]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this URL is not a hyperlink
[INFO] [stdout]  --> src/bin/tokio_ping_pong_2.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | //! https://tokio.rs/docs/futures/spawning/#coordinating-access-to-a-resource
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use an automatic link instead: `<https://tokio.rs/docs/futures/spawning/#coordinating-access-to-a-resource>`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(rustdoc::bare_urls)]` on by default
[INFO] [stdout]   = note: bare URLs are not automatically turned into clickable links
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 31 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "bf2c20ceeb892eb61039d7a9978a246a0797fc0c247f54a45745964db4467e21", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bf2c20ceeb892eb61039d7a9978a246a0797fc0c247f54a45745964db4467e21", kill_on_drop: false }`
[INFO] [stdout] bf2c20ceeb892eb61039d7a9978a246a0797fc0c247f54a45745964db4467e21
