[INFO] cloning repository https://github.com/Klapeyron/Markov
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Klapeyron/Markov" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKlapeyron%2FMarkov", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKlapeyron%2FMarkov'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 62d4cd1839e0f7fc96beeaa6dc2a1efb829e1b94
[INFO] checking Klapeyron/Markov against try#48c9d93cf65d550d124c40108859fd993778c157 for pr-153692-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKlapeyron%2FMarkov" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Klapeyron/Markov
[INFO] finished tweaking git repo https://github.com/Klapeyron/Markov
[INFO] tweaked toml for git repo https://github.com/Klapeyron/Markov written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Klapeyron/Markov on toolchain 48c9d93cf65d550d124c40108859fd993778c157
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+48c9d93cf65d550d124c40108859fd993778c157" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Klapeyron/Markov 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" "+48c9d93cf65d550d124c40108859fd993778c157" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: `package.edition` is unspecified, defaulting to `2015` while the latest is `2024`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 11 packages to latest compatible versions
[INFO] [stderr]       Adding itoa v1.0.18
[INFO] [stderr]       Adding memchr v2.8.0
[INFO] [stderr]       Adding proc-macro2 v1.0.106
[INFO] [stderr]       Adding quote v1.0.45
[INFO] [stderr]       Adding serde v1.0.228
[INFO] [stderr]       Adding serde_core v1.0.228
[INFO] [stderr]       Adding serde_derive v1.0.228
[INFO] [stderr]       Adding serde_json v1.0.149
[INFO] [stderr]       Adding syn v2.0.117
[INFO] [stderr]       Adding unicode-ident v1.0.24
[INFO] [stderr]       Adding zmij v1.0.21
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+48c9d93cf65d550d124c40108859fd993778c157" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 88bd1228eba6e46ee18bc08c20691610dc50ff8af808de294b5c645b3dd984ef
[INFO] running `Command { std: "docker" "start" "-a" "88bd1228eba6e46ee18bc08c20691610dc50ff8af808de294b5c645b3dd984ef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "88bd1228eba6e46ee18bc08c20691610dc50ff8af808de294b5c645b3dd984ef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "88bd1228eba6e46ee18bc08c20691610dc50ff8af808de294b5c645b3dd984ef", kill_on_drop: false }`
[INFO] [stdout] 88bd1228eba6e46ee18bc08c20691610dc50ff8af808de294b5c645b3dd984ef
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+48c9d93cf65d550d124c40108859fd993778c157" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e5291cb7adff67f3516592956ba1d0ec0d212f66bbbdfc85ddd09c99602a5bb7
[INFO] running `Command { std: "docker" "start" "-a" "e5291cb7adff67f3516592956ba1d0ec0d212f66bbbdfc85ddd09c99602a5bb7", kill_on_drop: false }`
[INFO] [stderr] warning: `package.edition` is unspecified, defaulting to `2015` while the latest is `2024`
[INFO] [stderr]    Compiling proc-macro2 v1.0.106
[INFO] [stderr]    Compiling quote v1.0.45
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]     Checking memchr v2.8.0
[INFO] [stderr]     Checking serde_json v1.0.149
[INFO] [stderr]    Compiling syn v2.0.117
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]     Checking markov v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: `self` parameter type does not contain `Self`
[INFO] [stdout]   --> src/matrix.rs:34:29
[INFO] [stdout]    |
[INFO] [stdout] 34 |     pub fn read_state(self: &Matrix<T>, x: usize, y: usize) -> Option<&T> {
[INFO] [stdout]    |                             ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: use `&self`, `&mut self`, or `self: &Self` for correct lifetime elision
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #140611 <https://github.com/rust-lang/rust/issues/140611>
[INFO] [stdout]    = note: `#[deny(self_lifetime_elision_not_applicable)]` (part of `#[deny(future_incompatible)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `self` parameter type does not contain `Self`
[INFO] [stdout]   --> src/matrix.rs:43:25
[INFO] [stdout]    |
[INFO] [stdout] 43 |     pub fn matrix(self: &Matrix<T>) -> &Vec<Vec<T>> {
[INFO] [stdout]    |                         ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: use `&self`, `&mut self`, or `self: &Self` for correct lifetime elision
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #140611 <https://github.com/rust-lang/rust/issues/140611>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `self` parameter type does not contain `Self`
[INFO] [stdout]    --> src/markov.rs:183:33
[INFO] [stdout]     |
[INFO] [stdout] 183 |     fn state_after_action(self: &Markov, action: &Action, x: usize, y: usize) -> &State {
[INFO] [stdout]     |                                 ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: use `&self`, `&mut self`, or `self: &Self` for correct lifetime elision
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #140611 <https://github.com/rust-lang/rust/issues/140611>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/markov.rs:206:79
[INFO] [stdout]     |
[INFO] [stdout] 206 |     fn evaluate_action(self: &Markov, action: &Action, x: usize, y: usize) -> (f64) {
[INFO] [stdout]     |                                                                               ^   ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 206 -     fn evaluate_action(self: &Markov, action: &Action, x: usize, y: usize) -> (f64) {
[INFO] [stdout] 206 +     fn evaluate_action(self: &Markov, action: &Action, x: usize, y: usize) -> f64  {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `self` parameter type does not contain `Self`
[INFO] [stdout]   --> src/matrix.rs:34:29
[INFO] [stdout]    |
[INFO] [stdout] 34 |     pub fn read_state(self: &Matrix<T>, x: usize, y: usize) -> Option<&T> {
[INFO] [stdout]    |                             ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: use `&self`, `&mut self`, or `self: &Self` for correct lifetime elision
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #140611 <https://github.com/rust-lang/rust/issues/140611>
[INFO] [stdout]    = note: `#[deny(self_lifetime_elision_not_applicable)]` (part of `#[deny(future_incompatible)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `self` parameter type does not contain `Self`
[INFO] [stdout]   --> src/matrix.rs:43:25
[INFO] [stdout]    |
[INFO] [stdout] 43 |     pub fn matrix(self: &Matrix<T>) -> &Vec<Vec<T>> {
[INFO] [stdout]    |                         ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: use `&self`, `&mut self`, or `self: &Self` for correct lifetime elision
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #140611 <https://github.com/rust-lang/rust/issues/140611>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `self` parameter type does not contain `Self`
[INFO] [stdout]    --> src/markov.rs:183:33
[INFO] [stdout]     |
[INFO] [stdout] 183 |     fn state_after_action(self: &Markov, action: &Action, x: usize, y: usize) -> &State {
[INFO] [stdout]     |                                 ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: use `&self`, `&mut self`, or `self: &Self` for correct lifetime elision
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #140611 <https://github.com/rust-lang/rust/issues/140611>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/markov.rs:206:79
[INFO] [stdout]     |
[INFO] [stdout] 206 |     fn evaluate_action(self: &Markov, action: &Action, x: usize, y: usize) -> (f64) {
[INFO] [stdout]     |                                                                               ^   ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 206 -     fn evaluate_action(self: &Markov, action: &Action, x: usize, y: usize) -> (f64) {
[INFO] [stdout] 206 +     fn evaluate_action(self: &Markov, action: &Action, x: usize, y: usize) -> f64  {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]   --> src/markov.rs:87:19
[INFO] [stdout]    |
[INFO] [stdout] 87 |             &Some(ref value) => write!(f, "{:?}, {:?}", self.state, self.action.clone().unwrap()),
[INFO] [stdout]    |                   ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]   --> src/markov.rs:87:19
[INFO] [stdout]    |
[INFO] [stdout] 87 |             &Some(ref value) => write!(f, "{:?}, {:?}", self.state, self.action.clone().unwrap()),
[INFO] [stdout]    |                   ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `set_size`, and `set_state` are never used
[INFO] [stdout]    --> src/markov.rs:105:12
[INFO] [stdout]     |
[INFO] [stdout] 104 | impl MarkovBuilder {
[INFO] [stdout]     | ------------------ associated items in this implementation
[INFO] [stdout] 105 |     pub fn new() -> MarkovBuilder {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 132 |     fn set_size(&mut self, x: usize, y: usize) -> &mut MarkovBuilder {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 137 |     fn set_state(&mut self, state: State, x: usize, y: usize) -> &mut MarkovBuilder {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]    --> src/markov.rs:171:8
[INFO] [stdout]     |
[INFO] [stdout] 170 | impl Markov {
[INFO] [stdout]     | ----------- associated function in this implementation
[INFO] [stdout] 171 |     fn new() -> Markov {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/markov.rs:333:9
[INFO] [stdout]     |
[INFO] [stdout] 333 |     let mut markov: Markov = MarkovBuilder::new()
[INFO] [stdout]     |         ----^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/markov.rs:348:9
[INFO] [stdout]     |
[INFO] [stdout] 348 |     let mut markov: Markov = MarkovBuilder::new()
[INFO] [stdout]     |         ----^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/matrix.rs:51:9
[INFO] [stdout]    |
[INFO] [stdout] 51 |         write!(f, "[");
[INFO] [stdout]    |         ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 51 |         let _ = write!(f, "[");
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/matrix.rs:53:13
[INFO] [stdout]    |
[INFO] [stdout] 53 |             write!(f, "\n");
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 53 |             let _ = write!(f, "\n");
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/matrix.rs:55:17
[INFO] [stdout]    |
[INFO] [stdout] 55 |                 write!(f, "[{:?}], ", elem);
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 55 |                 let _ = write!(f, "[{:?}], ", elem);
[INFO] [stdout]    |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/markov.rs:380:9
[INFO] [stdout]     |
[INFO] [stdout] 380 |     let mut markov: Markov = MarkovBuilder::new()
[INFO] [stdout]     |         ----^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/markov.rs:428:9
[INFO] [stdout]     |
[INFO] [stdout] 428 |     let mut markov: Markov = MarkovBuilder::new()
[INFO] [stdout]     |         ----^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `set_size` is never used
[INFO] [stdout]    --> src/markov.rs:132:8
[INFO] [stdout]     |
[INFO] [stdout] 104 | impl MarkovBuilder {
[INFO] [stdout]     | ------------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 132 |     fn set_size(&mut self, x: usize, y: usize) -> &mut MarkovBuilder {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]    --> src/markov.rs:171:8
[INFO] [stdout]     |
[INFO] [stdout] 170 | impl Markov {
[INFO] [stdout]     | ----------- associated function in this implementation
[INFO] [stdout] 171 |     fn new() -> Markov {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/matrix.rs:51:9
[INFO] [stdout]    |
[INFO] [stdout] 51 |         write!(f, "[");
[INFO] [stdout]    |         ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 51 |         let _ = write!(f, "[");
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/matrix.rs:53:13
[INFO] [stdout]    |
[INFO] [stdout] 53 |             write!(f, "\n");
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 53 |             let _ = write!(f, "\n");
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/matrix.rs:55:17
[INFO] [stdout]    |
[INFO] [stdout] 55 |                 write!(f, "[{:?}], ", elem);
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 55 |                 let _ = write!(f, "[{:?}], ", elem);
[INFO] [stdout]    |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `markov` (bin "markov") due to 3 previous errors; 7 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `markov` (bin "markov" test) due to 3 previous errors; 11 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "e5291cb7adff67f3516592956ba1d0ec0d212f66bbbdfc85ddd09c99602a5bb7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e5291cb7adff67f3516592956ba1d0ec0d212f66bbbdfc85ddd09c99602a5bb7", kill_on_drop: false }`
[INFO] [stdout] e5291cb7adff67f3516592956ba1d0ec0d212f66bbbdfc85ddd09c99602a5bb7
