[INFO] cloning repository https://github.com/dansaldt/rustbook
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dansaldt/rustbook" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdansaldt%2Frustbook", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdansaldt%2Frustbook'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 89031e10c5cc1e5ae7b9a9075bd03d7e0106fc23
[INFO] testing dansaldt/rustbook against try#ce59db7a1b1b012fb2793c4641c1bdecad7a128b for pr-85530
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdansaldt%2Frustbook" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dansaldt/rustbook on toolchain ce59db7a1b1b012fb2793c4641c1bdecad7a128b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/dansaldt/rustbook
[INFO] finished tweaking git repo https://github.com/dansaldt/rustbook
[INFO] tweaked toml for git repo https://github.com/dansaldt/rustbook written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/dansaldt/rustbook already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 21977d003c4dfe917a4c59a4a0848e6c90c5a9a66f3bfcd61ca6a99222f41cc1
[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" "21977d003c4dfe917a4c59a4a0848e6c90c5a9a66f3bfcd61ca6a99222f41cc1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "21977d003c4dfe917a4c59a4a0848e6c90c5a9a66f3bfcd61ca6a99222f41cc1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "21977d003c4dfe917a4c59a4a0848e6c90c5a9a66f3bfcd61ca6a99222f41cc1", kill_on_drop: false }`
[INFO] [stdout] 21977d003c4dfe917a4c59a4a0848e6c90c5a9a66f3bfcd61ca6a99222f41cc1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b2e3ab2741c628e81ab66ad818994e0885b21a42caad9f4afcf5d6e6c176acbb
[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" "b2e3ab2741c628e81ab66ad818994e0885b21a42caad9f4afcf5d6e6c176acbb", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust_book v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `username`
[INFO] [stdout]  --> src/ch5/ch-5.1-defining-instantiating-structs.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     username: String,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `sign_in_count`
[INFO] [stdout]  --> src/ch5/ch-5.1-defining-instantiating-structs.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     sign_in_count: u64,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `active`
[INFO] [stdout]  --> src/ch5/ch-5.1-defining-instantiating-structs.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     active: bool,
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `word`
[INFO] [stdout]   --> src/ch4/the-slice-type.rs:29:9
[INFO] [stdout]    |
[INFO] [stdout] 29 |     let word = first_word_no_slice(&s); // word will get the valud 5
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_word`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `slice`
[INFO] [stdout]   --> src/ch4/the-slice-type.rs:73:9
[INFO] [stdout]    |
[INFO] [stdout] 73 |     let slice = &a[1..3];
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_slice`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `hello`
[INFO] [stdout]   --> src/ch4/the-slice-type.rs:86:9
[INFO] [stdout]    |
[INFO] [stdout] 86 |     let hello = &s[..5]; // this is equal to &s[0..5],
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_hello`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `world`
[INFO] [stdout]   --> src/ch4/the-slice-type.rs:89:9
[INFO] [stdout]    |
[INFO] [stdout] 89 |     let world = &s[6..11];
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_world`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/ch4/the-slice-type.rs:38:9
[INFO] [stdout]    |
[INFO] [stdout] 38 |     let mut s = String::from("hello world");
[INFO] [stdout]    |         ----^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `first_word_no_slice`
[INFO] [stdout]  --> src/ch4/the-slice-type.rs:2:4
[INFO] [stdout]   |
[INFO] [stdout] 2 | fn first_word_no_slice(s: &String) -> usize {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `before_using_slice`
[INFO] [stdout]   --> src/ch4/the-slice-type.rs:26:4
[INFO] [stdout]    |
[INFO] [stdout] 26 | fn before_using_slice () {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `after_using_slice`
[INFO] [stdout]   --> src/ch4/the-slice-type.rs:37:4
[INFO] [stdout]    |
[INFO] [stdout] 37 | fn after_using_slice () {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `other_slices`
[INFO] [stdout]   --> src/ch4/the-slice-type.rs:70:4
[INFO] [stdout]    |
[INFO] [stdout] 70 | fn other_slices () {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `slice_example`
[INFO] [stdout]   --> src/ch4/the-slice-type.rs:83:4
[INFO] [stdout]    |
[INFO] [stdout] 83 | fn slice_example () {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0106]: missing lifetime specifier
[INFO] [stdout]   --> src/main.rs:32:17
[INFO] [stdout]    |
[INFO] [stdout] 32 | fn dangle () -> &String
[INFO] [stdout]    |                 ^ expected named lifetime parameter
[INFO] [stdout]    |
[INFO] [stdout]    = help: this function's return type contains a borrowed value, but there is no value for it to be borrowed from
[INFO] [stdout] help: consider using the `'static` lifetime
[INFO] [stdout]    |
[INFO] [stdout] 32 | fn dangle () -> &'static String
[INFO] [stdout]    |                 ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0106`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rust_book`
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]    --> src/ch6/ch-6.1-defining-an-enum.rs:149:9
[INFO] [stdout]     |
[INFO] [stdout] 149 |     let x: i8 = 5;
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]    --> src/ch6/ch-6.1-defining-an-enum.rs:150:9
[INFO] [stdout]     |
[INFO] [stdout] 150 |     let y: Option<i8> = Some(5);
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: field is never read: `kind`
[INFO] [stdout]   --> src/ch6/ch-6.1-defining-an-enum.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 |     kind: IpAddrKind,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `six`
[INFO] [stdout]   --> src/ch6/ch-6.2-match-control-flow-operator.rs:50:9
[INFO] [stdout]    |
[INFO] [stdout] 50 |     let six = plus_one(five);
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_six`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `none`
[INFO] [stdout]   --> src/ch6/ch-6.2-match-control-flow-operator.rs:51:9
[INFO] [stdout]    |
[INFO] [stdout] 51 |     let none = plus_one(None);
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_none`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Ipv4Addr`
[INFO] [stdout]    --> src/ch6/ch-6.1-defining-an-enum.rs:100:8
[INFO] [stdout]     |
[INFO] [stdout] 100 | struct Ipv4Addr {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Ipv6Addr`
[INFO] [stdout]    --> src/ch6/ch-6.1-defining-an-enum.rs:104:8
[INFO] [stdout]     |
[INFO] [stdout] 104 | struct Ipv6Addr {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `IpAddr4`
[INFO] [stdout]    --> src/ch6/ch-6.1-defining-an-enum.rs:108:6
[INFO] [stdout]     |
[INFO] [stdout] 108 | enum IpAddr4 {
[INFO] [stdout]     |      ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Quit`
[INFO] [stdout]    --> src/ch6/ch-6.1-defining-an-enum.rs:115:5
[INFO] [stdout]     |
[INFO] [stdout] 115 |     Quit,                       // normal enum, has not data associated with it atall
[INFO] [stdout]     |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Move`
[INFO] [stdout]    --> src/ch6/ch-6.1-defining-an-enum.rs:116:5
[INFO] [stdout]     |
[INFO] [stdout] 116 |     Move { x: i32, y: i32 },    // enum with anonymous struct type
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `ChangeColor`
[INFO] [stdout]    --> src/ch6/ch-6.1-defining-an-enum.rs:118:5
[INFO] [stdout]     |
[INFO] [stdout] 118 |     ChangeColor(i32, i32, i32), // enum with tuple type of three i32 values
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `QuitMessage`
[INFO] [stdout]    --> src/ch6/ch-6.1-defining-an-enum.rs:121:8
[INFO] [stdout]     |
[INFO] [stdout] 121 | struct QuitMessage;
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `MoveMessage`
[INFO] [stdout]    --> src/ch6/ch-6.1-defining-an-enum.rs:122:8
[INFO] [stdout]     |
[INFO] [stdout] 122 | struct MoveMessage {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `WriteMessage`
[INFO] [stdout]    --> src/ch6/ch-6.1-defining-an-enum.rs:126:8
[INFO] [stdout]     |
[INFO] [stdout] 126 | struct WriteMessage(String); // tuple struct
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `ChangeColorMessage`
[INFO] [stdout]    --> src/ch6/ch-6.1-defining-an-enum.rs:127:8
[INFO] [stdout]     |
[INFO] [stdout] 127 | struct ChangeColorMessage(i32, i32, i32); // tuple struct
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Message2`
[INFO] [stdout]    --> src/ch6/ch-6.1-defining-an-enum.rs:129:6
[INFO] [stdout]     |
[INFO] [stdout] 129 | enum Message2 {
[INFO] [stdout]     |      ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Diamond`
[INFO] [stdout]    --> src/ch6/ch-6.1-defining-an-enum.rs:164:5
[INFO] [stdout]     |
[INFO] [stdout] 164 |     Diamond,
[INFO] [stdout]     |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Spade`
[INFO] [stdout]    --> src/ch6/ch-6.1-defining-an-enum.rs:165:5
[INFO] [stdout]     |
[INFO] [stdout] 165 |     Spade,
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Club`
[INFO] [stdout]    --> src/ch6/ch-6.1-defining-an-enum.rs:166:5
[INFO] [stdout]     |
[INFO] [stdout] 166 |     Club,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Alabama`
[INFO] [stdout]   --> src/ch6/ch-6.2-match-control-flow-operator.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     Alabama,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Penny`
[INFO] [stdout]   --> src/ch6/ch-6.2-match-control-flow-operator.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 |     Penny,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Nickel`
[INFO] [stdout]   --> src/ch6/ch-6.2-match-control-flow-operator.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 |     Nickel,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Dime`
[INFO] [stdout]   --> src/ch6/ch-6.2-match-control-flow-operator.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 |     Dime,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v1`
[INFO] [stdout]  --> src/ch8/ch-8.1-vector.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let v1 = vec![1, 2, 3];
[INFO] [stdout]   |         ^^ help: if this is intentional, prefix it with an underscore: `_v1`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> src/ch8/ch-8.1-vector.rs:19:13
[INFO] [stdout]    |
[INFO] [stdout] 19 |         let v = vec![1, 2, 3];
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `row`
[INFO] [stdout]   --> src/ch8/ch-8.1-vector.rs:81:13
[INFO] [stdout]    |
[INFO] [stdout] 81 |         let row = vec![
[INFO] [stdout]    |             ^^^ help: if this is intentional, prefix it with an underscore: `_row`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/ch8/ch-8.1-vector.rs:45:13
[INFO] [stdout]    |
[INFO] [stdout] 45 |         let mut v = vec![1, 2, 3, 4, 5];
[INFO] [stdout]    |             ----^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 17 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "b2e3ab2741c628e81ab66ad818994e0885b21a42caad9f4afcf5d6e6c176acbb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b2e3ab2741c628e81ab66ad818994e0885b21a42caad9f4afcf5d6e6c176acbb", kill_on_drop: false }`
[INFO] [stdout] b2e3ab2741c628e81ab66ad818994e0885b21a42caad9f4afcf5d6e6c176acbb