[INFO] cloning repository https://github.com/hxxcxx/rust-playground
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/hxxcxx/rust-playground" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhxxcxx%2Frust-playground", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhxxcxx%2Frust-playground'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d485541c15d0fb6cd851f62e4f9c1c84e3dbf7a4
[INFO] checking hxxcxx/rust-playground against 79c0559184f27f4433a6fbc260b950d06d4a4889 for pr-162233-crater-rollup
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhxxcxx%2Frust-playground" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/hxxcxx/rust-playground
[INFO] finished tweaking git repo https://github.com/hxxcxx/rust-playground
[INFO] tweaked toml for git repo https://github.com/hxxcxx/rust-playground written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/hxxcxx/rust-playground on toolchain 79c0559184f27f4433a6fbc260b950d06d4a4889
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+79c0559184f27f4433a6fbc260b950d06d4a4889" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/hxxcxx/rust-playground 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" "+79c0559184f27f4433a6fbc260b950d06d4a4889" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: binary `ch01_intro` should have a kebab-case name
[INFO] [stderr]    |
[INFO] [stderr]  1 | /workspace/builds/worker-4-tc2/source/target/.../ch01_intro
[INFO] [stderr]    |                                                  ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `cargo::non_kebab_case_bins` is set to `warn` by default
[INFO] [stderr] help: to change the binary name to `ch01-intro`, convert `package.name`
[INFO] [stderr]   --> chapters/ch01_intro/Cargo.toml:2:8
[INFO] [stderr]    |
[INFO] [stderr]  2 - name = "ch01_intro"
[INFO] [stderr]  2 + name = "ch01-intro"
[INFO] [stderr]    |
[INFO] [stderr] help: to change the binary name to `ch01-intro`, specify `bin.name`
[INFO] [stderr]   --> chapters/ch01_intro/Cargo.toml:10:18
[INFO] [stderr]    |
[INFO] [stderr] 10 ~ workspace = true
[INFO] [stderr] 11 + [[bin]]
[INFO] [stderr] 12 + name = "ch01-intro"
[INFO] [stderr] 13 + path = "src/main.rs"
[INFO] [stderr]    |
[INFO] [stderr] warning: `ch01_intro` (manifest) generated 1 warning
[INFO] [stderr] warning: binary `ch11_traits_and_generics` should have a kebab-case name
[INFO] [stderr]    |
[INFO] [stderr]  1 | /workspace/builds/worker-4-tc2/source/target/.../ch11_traits_and_generics
[INFO] [stderr]    |                                                  ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `cargo::non_kebab_case_bins` is set to `warn` by default
[INFO] [stderr] help: to change the binary name to `ch11-traits-and-generics`, convert `package.name`
[INFO] [stderr]   --> chapters/ch11_traits_and_generics/Cargo.toml:2:8
[INFO] [stderr]    |
[INFO] [stderr]  2 - name = "ch11_traits_and_generics"
[INFO] [stderr]  2 + name = "ch11-traits-and-generics"
[INFO] [stderr]    |
[INFO] [stderr] help: to change the binary name to `ch11-traits-and-generics`, specify `bin.name`
[INFO] [stderr]   --> chapters/ch11_traits_and_generics/Cargo.toml:10:18
[INFO] [stderr]    |
[INFO] [stderr] 10 ~ workspace = true
[INFO] [stderr] 11 + [[bin]]
[INFO] [stderr] 12 + name = "ch11-traits-and-generics"
[INFO] [stderr] 13 + path = "src/main.rs"
[INFO] [stderr]    |
[INFO] [stderr] warning: `ch11_traits_and_generics` (manifest) generated 1 warning
[INFO] [stderr] warning: binary `ch16_collections` should have a kebab-case name
[INFO] [stderr]    |
[INFO] [stderr]  1 | /workspace/builds/worker-4-tc2/source/target/.../ch16_collections
[INFO] [stderr]    |                                                  ^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `cargo::non_kebab_case_bins` is set to `warn` by default
[INFO] [stderr] help: to change the binary name to `ch16-collections`, convert `package.name`
[INFO] [stderr]   --> chapters/ch16_collections/Cargo.toml:2:8
[INFO] [stderr]    |
[INFO] [stderr]  2 - name = "ch16_collections"
[INFO] [stderr]  2 + name = "ch16-collections"
[INFO] [stderr]    |
[INFO] [stderr] help: to change the binary name to `ch16-collections`, specify `bin.name`
[INFO] [stderr]   --> chapters/ch16_collections/Cargo.toml:10:18
[INFO] [stderr]    |
[INFO] [stderr] 10 ~ workspace = true
[INFO] [stderr] 11 + [[bin]]
[INFO] [stderr] 12 + name = "ch16-collections"
[INFO] [stderr] 13 + path = "src/main.rs"
[INFO] [stderr]    |
[INFO] [stderr] warning: `ch16_collections` (manifest) generated 1 warning
[INFO] [stderr] warning: binary `ch06_expressions` should have a kebab-case name
[INFO] [stderr]    |
[INFO] [stderr]  1 | /workspace/builds/worker-4-tc2/source/target/.../ch06_expressions
[INFO] [stderr]    |                                                  ^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `cargo::non_kebab_case_bins` is set to `warn` by default
[INFO] [stderr] help: to change the binary name to `ch06-expressions`, convert `package.name`
[INFO] [stderr]   --> chapters/ch06_expressions/Cargo.toml:2:8
[INFO] [stderr]    |
[INFO] [stderr]  2 - name = "ch06_expressions"
[INFO] [stderr]  2 + name = "ch06-expressions"
[INFO] [stderr]    |
[INFO] [stderr] help: to change the binary name to `ch06-expressions`, specify `bin.name`
[INFO] [stderr]   --> chapters/ch06_expressions/Cargo.toml:10:18
[INFO] [stderr]    |
[INFO] [stderr] 10 ~ workspace = true
[INFO] [stderr] 11 + [[bin]]
[INFO] [stderr] 12 + name = "ch06-expressions"
[INFO] [stderr] 13 + path = "src/main.rs"
[INFO] [stderr]    |
[INFO] [stderr] warning: `ch06_expressions` (manifest) generated 1 warning
[INFO] [stderr] warning: binary `ch07_errors` should have a kebab-case name
[INFO] [stderr]    |
[INFO] [stderr]  1 | /workspace/builds/worker-4-tc2/source/target/.../ch07_errors
[INFO] [stderr]    |                                                  ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `cargo::non_kebab_case_bins` is set to `warn` by default
[INFO] [stderr] help: to change the binary name to `ch07-errors`, convert `package.name`
[INFO] [stderr]   --> chapters/ch07_errors/Cargo.toml:2:8
[INFO] [stderr]    |
[INFO] [stderr]  2 - name = "ch07_errors"
[INFO] [stderr]  2 + name = "ch07-errors"
[INFO] [stderr]    |
[INFO] [stderr] help: to change the binary name to `ch07-errors`, specify `bin.name`
[INFO] [stderr]   --> chapters/ch07_errors/Cargo.toml:14:17
[INFO] [stderr]    |
[INFO] [stderr] 14 ~ thiserror = "2"
[INFO] [stderr] 15 + [[bin]]
[INFO] [stderr] 16 + name = "ch07-errors"
[INFO] [stderr] 17 + path = "src/main.rs"
[INFO] [stderr]    |
[INFO] [stderr] warning: `ch07_errors` (manifest) generated 1 warning
[INFO] [stderr] warning: binary `ch14_closures` should have a kebab-case name
[INFO] [stderr]    |
[INFO] [stderr]  1 | /workspace/builds/worker-4-tc2/source/target/.../ch14_closures
[INFO] [stderr]    |                                                  ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `cargo::non_kebab_case_bins` is set to `warn` by default
[INFO] [stderr] help: to change the binary name to `ch14-closures`, convert `package.name`
[INFO] [stderr]   --> chapters/ch14_closures/Cargo.toml:2:8
[INFO] [stderr]    |
[INFO] [stderr]  2 - name = "ch14_closures"
[INFO] [stderr]  2 + name = "ch14-closures"
[INFO] [stderr]    |
[INFO] [stderr] help: to change the binary name to `ch14-closures`, specify `bin.name`
[INFO] [stderr]   --> chapters/ch14_closures/Cargo.toml:10:18
[INFO] [stderr]    |
[INFO] [stderr] 10 ~ workspace = true
[INFO] [stderr] 11 + [[bin]]
[INFO] [stderr] 12 + name = "ch14-closures"
[INFO] [stderr] 13 + path = "src/main.rs"
[INFO] [stderr]    |
[INFO] [stderr] warning: `ch14_closures` (manifest) generated 1 warning
[INFO] [stderr] warning: binary `ch09_structs` should have a kebab-case name
[INFO] [stderr]    |
[INFO] [stderr]  1 | /workspace/builds/worker-4-tc2/source/target/.../ch09_structs
[INFO] [stderr]    |                                                  ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `cargo::non_kebab_case_bins` is set to `warn` by default
[INFO] [stderr] help: to change the binary name to `ch09-structs`, convert `package.name`
[INFO] [stderr]   --> chapters/ch09_structs/Cargo.toml:2:8
[INFO] [stderr]    |
[INFO] [stderr]  2 - name = "ch09_structs"
[INFO] [stderr]  2 + name = "ch09-structs"
[INFO] [stderr]    |
[INFO] [stderr] help: to change the binary name to `ch09-structs`, specify `bin.name`
[INFO] [stderr]   --> chapters/ch09_structs/Cargo.toml:10:18
[INFO] [stderr]    |
[INFO] [stderr] 10 ~ workspace = true
[INFO] [stderr] 11 + [[bin]]
[INFO] [stderr] 12 + name = "ch09-structs"
[INFO] [stderr] 13 + path = "src/main.rs"
[INFO] [stderr]    |
[INFO] [stderr] warning: `ch09_structs` (manifest) generated 1 warning
[INFO] [stderr] warning: binary `ch19_concurrency` should have a kebab-case name
[INFO] [stderr]    |
[INFO] [stderr]  1 | /workspace/builds/worker-4-tc2/source/target/.../ch19_concurrency
[INFO] [stderr]    |                                                  ^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `cargo::non_kebab_case_bins` is set to `warn` by default
[INFO] [stderr] help: to change the binary name to `ch19-concurrency`, convert `package.name`
[INFO] [stderr]   --> chapters/ch19_concurrency/Cargo.toml:2:8
[INFO] [stderr]    |
[INFO] [stderr]  2 - name = "ch19_concurrency"
[INFO] [stderr]  2 + name = "ch19-concurrency"
[INFO] [stderr]    |
[INFO] [stderr] help: to change the binary name to `ch19-concurrency`, specify `bin.name`
[INFO] [stderr]   --> chapters/ch19_concurrency/Cargo.toml:10:18
[INFO] [stderr]    |
[INFO] [stderr] 10 ~ workspace = true
[INFO] [stderr] 11 + [[bin]]
[INFO] [stderr] 12 + name = "ch19-concurrency"
[INFO] [stderr] 13 + path = "src/main.rs"
[INFO] [stderr]    |
[INFO] [stderr] warning: `ch19_concurrency` (manifest) generated 1 warning
[INFO] [stderr] warning: binary `ch17_strings_text` should have a kebab-case name
[INFO] [stderr]    |
[INFO] [stderr]  1 | /workspace/builds/worker-4-tc2/source/target/.../ch17_strings_text
[INFO] [stderr]    |                                                  ^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `cargo::non_kebab_case_bins` is set to `warn` by default
[INFO] [stderr] help: to change the binary name to `ch17-strings-text`, convert `package.name`
[INFO] [stderr]   --> chapters/ch17_strings_text/Cargo.toml:2:8
[INFO] [stderr]    |
[INFO] [stderr]  2 - name = "ch17_strings_text"
[INFO] [stderr]  2 + name = "ch17-strings-text"
[INFO] [stderr]    |
[INFO] [stderr] help: to change the binary name to `ch17-strings-text`, specify `bin.name`
[INFO] [stderr]   --> chapters/ch17_strings_text/Cargo.toml:10:18
[INFO] [stderr]    |
[INFO] [stderr] 10 ~ workspace = true
[INFO] [stderr] 11 + [[bin]]
[INFO] [stderr] 12 + name = "ch17-strings-text"
[INFO] [stderr] 13 + path = "src/main.rs"
[INFO] [stderr]    |
[INFO] [stderr] warning: `ch17_strings_text` (manifest) generated 1 warning
[INFO] [stderr] warning: binary `ch10_enums_patterns` should have a kebab-case name
[INFO] [stderr]    |
[INFO] [stderr]  1 | /workspace/builds/worker-4-tc2/source/target/.../ch10_enums_patterns
[INFO] [stderr]    |                                                  ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `cargo::non_kebab_case_bins` is set to `warn` by default
[INFO] [stderr] help: to change the binary name to `ch10-enums-patterns`, convert `package.name`
[INFO] [stderr]   --> chapters/ch10_enums_patterns/Cargo.toml:2:8
[INFO] [stderr]    |
[INFO] [stderr]  2 - name = "ch10_enums_patterns"
[INFO] [stderr]  2 + name = "ch10-enums-patterns"
[INFO] [stderr]    |
[INFO] [stderr] help: to change the binary name to `ch10-enums-patterns`, specify `bin.name`
[INFO] [stderr]   --> chapters/ch10_enums_patterns/Cargo.toml:10:18
[INFO] [stderr]    |
[INFO] [stderr] 10 ~ workspace = true
[INFO] [stderr] 11 + [[bin]]
[INFO] [stderr] 12 + name = "ch10-enums-patterns"
[INFO] [stderr] 13 + path = "src/main.rs"
[INFO] [stderr]    |
[INFO] [stderr] warning: `ch10_enums_patterns` (manifest) generated 1 warning
[INFO] [stderr] warning: binary `ch12_operator_overloading` should have a kebab-case name
[INFO] [stderr]    |
[INFO] [stderr]  1 | /workspace/builds/worker-4-tc2/source/target/.../ch12_operator_overloading
[INFO] [stderr]    |                                                  ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `cargo::non_kebab_case_bins` is set to `warn` by default
[INFO] [stderr] help: to change the binary name to `ch12-operator-overloading`, convert `package.name`
[INFO] [stderr]   --> chapters/ch12_operator_overloading/Cargo.toml:2:8
[INFO] [stderr]    |
[INFO] [stderr]  2 - name = "ch12_operator_overloading"
[INFO] [stderr]  2 + name = "ch12-operator-overloading"
[INFO] [stderr]    |
[INFO] [stderr] help: to change the binary name to `ch12-operator-overloading`, specify `bin.name`
[INFO] [stderr]   --> chapters/ch12_operator_overloading/Cargo.toml:10:18
[INFO] [stderr]    |
[INFO] [stderr] 10 ~ workspace = true
[INFO] [stderr] 11 + [[bin]]
[INFO] [stderr] 12 + name = "ch12-operator-overloading"
[INFO] [stderr] 13 + path = "src/main.rs"
[INFO] [stderr]    |
[INFO] [stderr] warning: `ch12_operator_overloading` (manifest) generated 1 warning
[INFO] [stderr] warning: binary `ch04_ownership` should have a kebab-case name
[INFO] [stderr]    |
[INFO] [stderr]  1 | /workspace/builds/worker-4-tc2/source/target/.../ch04_ownership
[INFO] [stderr]    |                                                  ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `cargo::non_kebab_case_bins` is set to `warn` by default
[INFO] [stderr] help: to change the binary name to `ch04-ownership`, convert `package.name`
[INFO] [stderr]   --> chapters/ch04_ownership/Cargo.toml:2:8
[INFO] [stderr]    |
[INFO] [stderr]  2 - name = "ch04_ownership"
[INFO] [stderr]  2 + name = "ch04-ownership"
[INFO] [stderr]    |
[INFO] [stderr] help: to change the binary name to `ch04-ownership`, specify `bin.name`
[INFO] [stderr]   --> chapters/ch04_ownership/Cargo.toml:10:18
[INFO] [stderr]    |
[INFO] [stderr] 10 ~ workspace = true
[INFO] [stderr] 11 + [[bin]]
[INFO] [stderr] 12 + name = "ch04-ownership"
[INFO] [stderr] 13 + path = "src/main.rs"
[INFO] [stderr]    |
[INFO] [stderr] warning: `ch04_ownership` (manifest) generated 1 warning
[INFO] [stderr] warning: binary `ch05_references` should have a kebab-case name
[INFO] [stderr]    |
[INFO] [stderr]  1 | /workspace/builds/worker-4-tc2/source/target/.../ch05_references
[INFO] [stderr]    |                                                  ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `cargo::non_kebab_case_bins` is set to `warn` by default
[INFO] [stderr] help: to change the binary name to `ch05-references`, convert `package.name`
[INFO] [stderr]   --> chapters/ch05_references/Cargo.toml:2:8
[INFO] [stderr]    |
[INFO] [stderr]  2 - name = "ch05_references"
[INFO] [stderr]  2 + name = "ch05-references"
[INFO] [stderr]    |
[INFO] [stderr] help: to change the binary name to `ch05-references`, specify `bin.name`
[INFO] [stderr]   --> chapters/ch05_references/Cargo.toml:10:18
[INFO] [stderr]    |
[INFO] [stderr] 10 ~ workspace = true
[INFO] [stderr] 11 + [[bin]]
[INFO] [stderr] 12 + name = "ch05-references"
[INFO] [stderr] 13 + path = "src/main.rs"
[INFO] [stderr]    |
[INFO] [stderr] warning: `ch05_references` (manifest) generated 1 warning
[INFO] [stderr] warning: binary `ch13_utility_traits` should have a kebab-case name
[INFO] [stderr]    |
[INFO] [stderr]  1 | /workspace/builds/worker-4-tc2/source/target/.../ch13_utility_traits
[INFO] [stderr]    |                                                  ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `cargo::non_kebab_case_bins` is set to `warn` by default
[INFO] [stderr] help: to change the binary name to `ch13-utility-traits`, convert `package.name`
[INFO] [stderr]   --> chapters/ch13_utility_traits/Cargo.toml:2:8
[INFO] [stderr]    |
[INFO] [stderr]  2 - name = "ch13_utility_traits"
[INFO] [stderr]  2 + name = "ch13-utility-traits"
[INFO] [stderr]    |
[INFO] [stderr] help: to change the binary name to `ch13-utility-traits`, specify `bin.name`
[INFO] [stderr]   --> chapters/ch13_utility_traits/Cargo.toml:10:18
[INFO] [stderr]    |
[INFO] [stderr] 10 ~ workspace = true
[INFO] [stderr] 11 + [[bin]]
[INFO] [stderr] 12 + name = "ch13-utility-traits"
[INFO] [stderr] 13 + path = "src/main.rs"
[INFO] [stderr]    |
[INFO] [stderr] warning: `ch13_utility_traits` (manifest) generated 1 warning
[INFO] [stderr] warning: binary `ch08_crates_modules` should have a kebab-case name
[INFO] [stderr]    |
[INFO] [stderr]  1 | /workspace/builds/worker-4-tc2/source/target/.../ch08_crates_modules
[INFO] [stderr]    |                                                  ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `cargo::non_kebab_case_bins` is set to `warn` by default
[INFO] [stderr] help: to change the binary name to `ch08-crates-modules`, convert `package.name`
[INFO] [stderr]   --> chapters/ch08_crates_modules/Cargo.toml:2:8
[INFO] [stderr]    |
[INFO] [stderr]  2 - name = "ch08_crates_modules"
[INFO] [stderr]  2 + name = "ch08-crates-modules"
[INFO] [stderr]    |
[INFO] [stderr] help: to change the binary name to `ch08-crates-modules`, specify `bin.name`
[INFO] [stderr]   --> chapters/ch08_crates_modules/Cargo.toml:16:12
[INFO] [stderr]    |
[INFO] [stderr] 16 ~ extra = []
[INFO] [stderr] 17 + [[bin]]
[INFO] [stderr] 18 + name = "ch08-crates-modules"
[INFO] [stderr] 19 + path = "src/main.rs"
[INFO] [stderr]    |
[INFO] [stderr] warning: `ch08_crates_modules` (manifest) generated 1 warning
[INFO] [stderr] warning: binary `ch20_async` should have a kebab-case name
[INFO] [stderr]    |
[INFO] [stderr]  1 | /workspace/builds/worker-4-tc2/source/target/.../ch20_async
[INFO] [stderr]    |                                                  ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `cargo::non_kebab_case_bins` is set to `warn` by default
[INFO] [stderr] help: to change the binary name to `ch20-async`, convert `package.name`
[INFO] [stderr]   --> chapters/ch20_async/Cargo.toml:2:8
[INFO] [stderr]    |
[INFO] [stderr]  2 - name = "ch20_async"
[INFO] [stderr]  2 + name = "ch20-async"
[INFO] [stderr]    |
[INFO] [stderr] help: to change the binary name to `ch20-async`, specify `bin.name`
[INFO] [stderr]   --> chapters/ch20_async/Cargo.toml:19:91
[INFO] [stderr]    |
[INFO] [stderr] 19 ~ tokio = { version = "1", features = ["rt-multi-thread", "macros", "time", "sync", "rt"] }
[INFO] [stderr] 20 + [[bin]]
[INFO] [stderr] 21 + name = "ch20-async"
[INFO] [stderr] 22 + path = "src/main.rs"
[INFO] [stderr]    |
[INFO] [stderr] warning: `ch20_async` (manifest) generated 1 warning
[INFO] [stderr] warning: binary `ch15_iterators` should have a kebab-case name
[INFO] [stderr]    |
[INFO] [stderr]  1 | /workspace/builds/worker-4-tc2/source/target/.../ch15_iterators
[INFO] [stderr]    |                                                  ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `cargo::non_kebab_case_bins` is set to `warn` by default
[INFO] [stderr] help: to change the binary name to `ch15-iterators`, convert `package.name`
[INFO] [stderr]   --> chapters/ch15_iterators/Cargo.toml:2:8
[INFO] [stderr]    |
[INFO] [stderr]  2 - name = "ch15_iterators"
[INFO] [stderr]  2 + name = "ch15-iterators"
[INFO] [stderr]    |
[INFO] [stderr] help: to change the binary name to `ch15-iterators`, specify `bin.name`
[INFO] [stderr]   --> chapters/ch15_iterators/Cargo.toml:10:18
[INFO] [stderr]    |
[INFO] [stderr] 10 ~ workspace = true
[INFO] [stderr] 11 + [[bin]]
[INFO] [stderr] 12 + name = "ch15-iterators"
[INFO] [stderr] 13 + path = "src/main.rs"
[INFO] [stderr]    |
[INFO] [stderr] warning: `ch15_iterators` (manifest) generated 1 warning
[INFO] [stderr] warning: binary `ch18_io` should have a kebab-case name
[INFO] [stderr]    |
[INFO] [stderr]  1 | /workspace/builds/worker-4-tc2/source/target/.../ch18_io
[INFO] [stderr]    |                                                  ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `cargo::non_kebab_case_bins` is set to `warn` by default
[INFO] [stderr] help: to change the binary name to `ch18-io`, convert `package.name`
[INFO] [stderr]   --> chapters/ch18_io/Cargo.toml:2:8
[INFO] [stderr]    |
[INFO] [stderr]  2 - name = "ch18_io"
[INFO] [stderr]  2 + name = "ch18-io"
[INFO] [stderr]    |
[INFO] [stderr] help: to change the binary name to `ch18-io`, specify `bin.name`
[INFO] [stderr]   --> chapters/ch18_io/Cargo.toml:10:18
[INFO] [stderr]    |
[INFO] [stderr] 10 ~ workspace = true
[INFO] [stderr] 11 + [[bin]]
[INFO] [stderr] 12 + name = "ch18-io"
[INFO] [stderr] 13 + path = "src/main.rs"
[INFO] [stderr]    |
[INFO] [stderr] warning: `ch18_io` (manifest) generated 1 warning
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:8683fc1fc2eb5c9ac98e0d076ab094b2ffac7f99da555d2b6a2e27f346de2ec7" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] f91dbf8574b059a5d0cd9bf4ad5d4ebcab17f7c292588af56cce1d5d4051a566
[INFO] running `Command { std: "docker" "start" "f91dbf8574b059a5d0cd9bf4ad5d4ebcab17f7c292588af56cce1d5d4051a566", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f91dbf8574b059a5d0cd9bf4ad5d4ebcab17f7c292588af56cce1d5d4051a566", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "f91dbf8574b059a5d0cd9bf4ad5d4ebcab17f7c292588af56cce1d5d4051a566" "/opt/rustwide/cargo-home/bin/cargo" "+79c0559184f27f4433a6fbc260b950d06d4a4889" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f91dbf8574b059a5d0cd9bf4ad5d4ebcab17f7c292588af56cce1d5d4051a566", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "f91dbf8574b059a5d0cd9bf4ad5d4ebcab17f7c292588af56cce1d5d4051a566" "/opt/rustwide/cargo-home/bin/cargo" "+79c0559184f27f4433a6fbc260b950d06d4a4889" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] warning: binary `ch01_intro` should have a kebab-case name
[INFO] [stderr]    |
[INFO] [stderr]  1 | /opt/rustwide/target/.../ch01_intro
[INFO] [stderr]    |                          ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `cargo::non_kebab_case_bins` is set to `warn` by default
[INFO] [stderr] help: to change the binary name to `ch01-intro`, convert `package.name`
[INFO] [stderr]   --> chapters/ch01_intro/Cargo.toml:2:8
[INFO] [stderr]    |
[INFO] [stderr]  2 - name = "ch01_intro"
[INFO] [stderr]  2 + name = "ch01-intro"
[INFO] [stderr]    |
[INFO] [stderr] help: to change the binary name to `ch01-intro`, specify `bin.name`
[INFO] [stderr]   --> chapters/ch01_intro/Cargo.toml:10:18
[INFO] [stderr]    |
[INFO] [stderr] 10 ~ workspace = true
[INFO] [stderr] 11 + [[bin]]
[INFO] [stderr] 12 + name = "ch01-intro"
[INFO] [stderr] 13 + path = "src/main.rs"
[INFO] [stderr]    |
[INFO] [stderr] warning: `ch01_intro` (manifest) generated 1 warning
[INFO] [stderr] warning: binary `ch11_traits_and_generics` should have a kebab-case name
[INFO] [stderr]    |
[INFO] [stderr]  1 | /opt/rustwide/target/.../ch11_traits_and_generics
[INFO] [stderr]    |                          ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `cargo::non_kebab_case_bins` is set to `warn` by default
[INFO] [stderr] help: to change the binary name to `ch11-traits-and-generics`, convert `package.name`
[INFO] [stderr]   --> chapters/ch11_traits_and_generics/Cargo.toml:2:8
[INFO] [stderr]    |
[INFO] [stderr]  2 - name = "ch11_traits_and_generics"
[INFO] [stderr]  2 + name = "ch11-traits-and-generics"
[INFO] [stderr]    |
[INFO] [stderr] help: to change the binary name to `ch11-traits-and-generics`, specify `bin.name`
[INFO] [stderr]   --> chapters/ch11_traits_and_generics/Cargo.toml:10:18
[INFO] [stderr]    |
[INFO] [stderr] 10 ~ workspace = true
[INFO] [stderr] 11 + [[bin]]
[INFO] [stderr] 12 + name = "ch11-traits-and-generics"
[INFO] [stderr] 13 + path = "src/main.rs"
[INFO] [stderr]    |
[INFO] [stderr] warning: `ch11_traits_and_generics` (manifest) generated 1 warning
[INFO] [stderr] warning: binary `ch16_collections` should have a kebab-case name
[INFO] [stderr]    |
[INFO] [stderr]  1 | /opt/rustwide/target/.../ch16_collections
[INFO] [stderr]    |                          ^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `cargo::non_kebab_case_bins` is set to `warn` by default
[INFO] [stderr] help: to change the binary name to `ch16-collections`, convert `package.name`
[INFO] [stderr]   --> chapters/ch16_collections/Cargo.toml:2:8
[INFO] [stderr]    |
[INFO] [stderr]  2 - name = "ch16_collections"
[INFO] [stderr]  2 + name = "ch16-collections"
[INFO] [stderr]    |
[INFO] [stderr] help: to change the binary name to `ch16-collections`, specify `bin.name`
[INFO] [stderr]   --> chapters/ch16_collections/Cargo.toml:10:18
[INFO] [stderr]    |
[INFO] [stderr] 10 ~ workspace = true
[INFO] [stderr] 11 + [[bin]]
[INFO] [stderr] 12 + name = "ch16-collections"
[INFO] [stderr] 13 + path = "src/main.rs"
[INFO] [stderr]    |
[INFO] [stderr] warning: `ch16_collections` (manifest) generated 1 warning
[INFO] [stderr] warning: binary `ch06_expressions` should have a kebab-case name
[INFO] [stderr]    |
[INFO] [stderr]  1 | /opt/rustwide/target/.../ch06_expressions
[INFO] [stderr]    |                          ^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `cargo::non_kebab_case_bins` is set to `warn` by default
[INFO] [stderr] help: to change the binary name to `ch06-expressions`, convert `package.name`
[INFO] [stderr]   --> chapters/ch06_expressions/Cargo.toml:2:8
[INFO] [stderr]    |
[INFO] [stderr]  2 - name = "ch06_expressions"
[INFO] [stderr]  2 + name = "ch06-expressions"
[INFO] [stderr]    |
[INFO] [stderr] help: to change the binary name to `ch06-expressions`, specify `bin.name`
[INFO] [stderr]   --> chapters/ch06_expressions/Cargo.toml:10:18
[INFO] [stderr]    |
[INFO] [stderr] 10 ~ workspace = true
[INFO] [stderr] 11 + [[bin]]
[INFO] [stderr] 12 + name = "ch06-expressions"
[INFO] [stderr] 13 + path = "src/main.rs"
[INFO] [stderr]    |
[INFO] [stderr] warning: `ch06_expressions` (manifest) generated 1 warning
[INFO] [stderr] warning: binary `ch07_errors` should have a kebab-case name
[INFO] [stderr]    |
[INFO] [stderr]  1 | /opt/rustwide/target/.../ch07_errors
[INFO] [stderr]    |                          ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `cargo::non_kebab_case_bins` is set to `warn` by default
[INFO] [stderr] help: to change the binary name to `ch07-errors`, convert `package.name`
[INFO] [stderr]   --> chapters/ch07_errors/Cargo.toml:2:8
[INFO] [stderr]    |
[INFO] [stderr]  2 - name = "ch07_errors"
[INFO] [stderr]  2 + name = "ch07-errors"
[INFO] [stderr]    |
[INFO] [stderr] help: to change the binary name to `ch07-errors`, specify `bin.name`
[INFO] [stderr]   --> chapters/ch07_errors/Cargo.toml:14:17
[INFO] [stderr]    |
[INFO] [stderr] 14 ~ thiserror = "2"
[INFO] [stderr] 15 + [[bin]]
[INFO] [stderr] 16 + name = "ch07-errors"
[INFO] [stderr] 17 + path = "src/main.rs"
[INFO] [stderr]    |
[INFO] [stderr] warning: `ch07_errors` (manifest) generated 1 warning
[INFO] [stderr] warning: binary `ch14_closures` should have a kebab-case name
[INFO] [stderr]    |
[INFO] [stderr]  1 | /opt/rustwide/target/.../ch14_closures
[INFO] [stderr]    |                          ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `cargo::non_kebab_case_bins` is set to `warn` by default
[INFO] [stderr] help: to change the binary name to `ch14-closures`, convert `package.name`
[INFO] [stderr]   --> chapters/ch14_closures/Cargo.toml:2:8
[INFO] [stderr]    |
[INFO] [stderr]  2 - name = "ch14_closures"
[INFO] [stderr]  2 + name = "ch14-closures"
[INFO] [stderr]    |
[INFO] [stderr] help: to change the binary name to `ch14-closures`, specify `bin.name`
[INFO] [stderr]   --> chapters/ch14_closures/Cargo.toml:10:18
[INFO] [stderr]    |
[INFO] [stderr] 10 ~ workspace = true
[INFO] [stderr] 11 + [[bin]]
[INFO] [stderr] 12 + name = "ch14-closures"
[INFO] [stderr] 13 + path = "src/main.rs"
[INFO] [stderr]    |
[INFO] [stderr] warning: `ch14_closures` (manifest) generated 1 warning
[INFO] [stderr] warning: binary `ch09_structs` should have a kebab-case name
[INFO] [stderr]    |
[INFO] [stderr]  1 | /opt/rustwide/target/.../ch09_structs
[INFO] [stderr]    |                          ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `cargo::non_kebab_case_bins` is set to `warn` by default
[INFO] [stderr] help: to change the binary name to `ch09-structs`, convert `package.name`
[INFO] [stderr]   --> chapters/ch09_structs/Cargo.toml:2:8
[INFO] [stderr]    |
[INFO] [stderr]  2 - name = "ch09_structs"
[INFO] [stderr]  2 + name = "ch09-structs"
[INFO] [stderr]    |
[INFO] [stderr] help: to change the binary name to `ch09-structs`, specify `bin.name`
[INFO] [stderr]   --> chapters/ch09_structs/Cargo.toml:10:18
[INFO] [stderr]    |
[INFO] [stderr] 10 ~ workspace = true
[INFO] [stderr] 11 + [[bin]]
[INFO] [stderr] 12 + name = "ch09-structs"
[INFO] [stderr] 13 + path = "src/main.rs"
[INFO] [stderr]    |
[INFO] [stderr] warning: `ch09_structs` (manifest) generated 1 warning
[INFO] [stderr] warning: binary `ch19_concurrency` should have a kebab-case name
[INFO] [stderr]    |
[INFO] [stderr]  1 | /opt/rustwide/target/.../ch19_concurrency
[INFO] [stderr]    |                          ^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `cargo::non_kebab_case_bins` is set to `warn` by default
[INFO] [stderr] help: to change the binary name to `ch19-concurrency`, convert `package.name`
[INFO] [stderr]   --> chapters/ch19_concurrency/Cargo.toml:2:8
[INFO] [stderr]    |
[INFO] [stderr]  2 - name = "ch19_concurrency"
[INFO] [stderr]  2 + name = "ch19-concurrency"
[INFO] [stderr]    |
[INFO] [stderr] help: to change the binary name to `ch19-concurrency`, specify `bin.name`
[INFO] [stderr]   --> chapters/ch19_concurrency/Cargo.toml:10:18
[INFO] [stderr]    |
[INFO] [stderr] 10 ~ workspace = true
[INFO] [stderr] 11 + [[bin]]
[INFO] [stderr] 12 + name = "ch19-concurrency"
[INFO] [stderr] 13 + path = "src/main.rs"
[INFO] [stderr]    |
[INFO] [stderr] warning: `ch19_concurrency` (manifest) generated 1 warning
[INFO] [stderr] warning: binary `ch10_enums_patterns` should have a kebab-case name
[INFO] [stderr]    |
[INFO] [stderr]  1 | /opt/rustwide/target/.../ch10_enums_patterns
[INFO] [stderr]    |                          ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `cargo::non_kebab_case_bins` is set to `warn` by default
[INFO] [stderr] help: to change the binary name to `ch10-enums-patterns`, convert `package.name`
[INFO] [stderr]   --> chapters/ch10_enums_patterns/Cargo.toml:2:8
[INFO] [stderr]    |
[INFO] [stderr]  2 - name = "ch10_enums_patterns"
[INFO] [stderr]  2 + name = "ch10-enums-patterns"
[INFO] [stderr]    |
[INFO] [stderr] help: to change the binary name to `ch10-enums-patterns`, specify `bin.name`
[INFO] [stderr]   --> chapters/ch10_enums_patterns/Cargo.toml:10:18
[INFO] [stderr]    |
[INFO] [stderr] 10 ~ workspace = true
[INFO] [stderr] 11 + [[bin]]
[INFO] [stderr] 12 + name = "ch10-enums-patterns"
[INFO] [stderr] 13 + path = "src/main.rs"
[INFO] [stderr]    |
[INFO] [stderr] warning: `ch10_enums_patterns` (manifest) generated 1 warning
[INFO] [stderr] warning: binary `ch17_strings_text` should have a kebab-case name
[INFO] [stderr]    |
[INFO] [stderr]  1 | /opt/rustwide/target/.../ch17_strings_text
[INFO] [stderr]    |                          ^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `cargo::non_kebab_case_bins` is set to `warn` by default
[INFO] [stderr] help: to change the binary name to `ch17-strings-text`, convert `package.name`
[INFO] [stderr]   --> chapters/ch17_strings_text/Cargo.toml:2:8
[INFO] [stderr]    |
[INFO] [stderr]  2 - name = "ch17_strings_text"
[INFO] [stderr]  2 + name = "ch17-strings-text"
[INFO] [stderr]    |
[INFO] [stderr] help: to change the binary name to `ch17-strings-text`, specify `bin.name`
[INFO] [stderr]   --> chapters/ch17_strings_text/Cargo.toml:10:18
[INFO] [stderr]    |
[INFO] [stderr] 10 ~ workspace = true
[INFO] [stderr] 11 + [[bin]]
[INFO] [stderr] 12 + name = "ch17-strings-text"
[INFO] [stderr] 13 + path = "src/main.rs"
[INFO] [stderr]    |
[INFO] [stderr] warning: `ch17_strings_text` (manifest) generated 1 warning
[INFO] [stderr] warning: binary `ch12_operator_overloading` should have a kebab-case name
[INFO] [stderr]    |
[INFO] [stderr]  1 | /opt/rustwide/target/.../ch12_operator_overloading
[INFO] [stderr]    |                          ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `cargo::non_kebab_case_bins` is set to `warn` by default
[INFO] [stderr] help: to change the binary name to `ch12-operator-overloading`, convert `package.name`
[INFO] [stderr]   --> chapters/ch12_operator_overloading/Cargo.toml:2:8
[INFO] [stderr]    |
[INFO] [stderr]  2 - name = "ch12_operator_overloading"
[INFO] [stderr]  2 + name = "ch12-operator-overloading"
[INFO] [stderr]    |
[INFO] [stderr] help: to change the binary name to `ch12-operator-overloading`, specify `bin.name`
[INFO] [stderr]   --> chapters/ch12_operator_overloading/Cargo.toml:10:18
[INFO] [stderr]    |
[INFO] [stderr] 10 ~ workspace = true
[INFO] [stderr] 11 + [[bin]]
[INFO] [stderr] 12 + name = "ch12-operator-overloading"
[INFO] [stderr] 13 + path = "src/main.rs"
[INFO] [stderr]    |
[INFO] [stderr] warning: `ch12_operator_overloading` (manifest) generated 1 warning
[INFO] [stderr] warning: binary `ch20_async` should have a kebab-case name
[INFO] [stderr]    |
[INFO] [stderr]  1 | /opt/rustwide/target/.../ch20_async
[INFO] [stderr]    |                          ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `cargo::non_kebab_case_bins` is set to `warn` by default
[INFO] [stderr] help: to change the binary name to `ch20-async`, convert `package.name`
[INFO] [stderr]   --> chapters/ch20_async/Cargo.toml:2:8
[INFO] [stderr]    |
[INFO] [stderr]  2 - name = "ch20_async"
[INFO] [stderr]  2 + name = "ch20-async"
[INFO] [stderr]    |
[INFO] [stderr] help: to change the binary name to `ch20-async`, specify `bin.name`
[INFO] [stderr]   --> chapters/ch20_async/Cargo.toml:19:91
[INFO] [stderr]    |
[INFO] [stderr] 19 ~ tokio = { version = "1", features = ["rt-multi-thread", "macros", "time", "sync", "rt"] }
[INFO] [stderr] 20 + [[bin]]
[INFO] [stderr] 21 + name = "ch20-async"
[INFO] [stderr] 22 + path = "src/main.rs"
[INFO] [stderr]    |
[INFO] [stderr] warning: `ch20_async` (manifest) generated 1 warning
[INFO] [stderr] warning: binary `ch04_ownership` should have a kebab-case name
[INFO] [stderr]    |
[INFO] [stderr]  1 | /opt/rustwide/target/.../ch04_ownership
[INFO] [stderr]    |                          ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `cargo::non_kebab_case_bins` is set to `warn` by default
[INFO] [stderr] help: to change the binary name to `ch04-ownership`, convert `package.name`
[INFO] [stderr]   --> chapters/ch04_ownership/Cargo.toml:2:8
[INFO] [stderr]    |
[INFO] [stderr]  2 - name = "ch04_ownership"
[INFO] [stderr]  2 + name = "ch04-ownership"
[INFO] [stderr]    |
[INFO] [stderr] help: to change the binary name to `ch04-ownership`, specify `bin.name`
[INFO] [stderr]   --> chapters/ch04_ownership/Cargo.toml:10:18
[INFO] [stderr]    |
[INFO] [stderr] 10 ~ workspace = true
[INFO] [stderr] 11 + [[bin]]
[INFO] [stderr] 12 + name = "ch04-ownership"
[INFO] [stderr] 13 + path = "src/main.rs"
[INFO] [stderr]    |
[INFO] [stderr] warning: `ch04_ownership` (manifest) generated 1 warning
[INFO] [stderr] warning: binary `ch05_references` should have a kebab-case name
[INFO] [stderr]    |
[INFO] [stderr]  1 | /opt/rustwide/target/.../ch05_references
[INFO] [stderr]    |                          ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `cargo::non_kebab_case_bins` is set to `warn` by default
[INFO] [stderr] help: to change the binary name to `ch05-references`, convert `package.name`
[INFO] [stderr]   --> chapters/ch05_references/Cargo.toml:2:8
[INFO] [stderr]    |
[INFO] [stderr]  2 - name = "ch05_references"
[INFO] [stderr]  2 + name = "ch05-references"
[INFO] [stderr]    |
[INFO] [stderr] help: to change the binary name to `ch05-references`, specify `bin.name`
[INFO] [stderr]   --> chapters/ch05_references/Cargo.toml:10:18
[INFO] [stderr]    |
[INFO] [stderr] 10 ~ workspace = true
[INFO] [stderr] 11 + [[bin]]
[INFO] [stderr] 12 + name = "ch05-references"
[INFO] [stderr] 13 + path = "src/main.rs"
[INFO] [stderr]    |
[INFO] [stderr] warning: `ch05_references` (manifest) generated 1 warning
[INFO] [stderr] warning: binary `ch13_utility_traits` should have a kebab-case name
[INFO] [stderr]    |
[INFO] [stderr]  1 | /opt/rustwide/target/.../ch13_utility_traits
[INFO] [stderr]    |                          ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `cargo::non_kebab_case_bins` is set to `warn` by default
[INFO] [stderr] help: to change the binary name to `ch13-utility-traits`, convert `package.name`
[INFO] [stderr]   --> chapters/ch13_utility_traits/Cargo.toml:2:8
[INFO] [stderr]    |
[INFO] [stderr]  2 - name = "ch13_utility_traits"
[INFO] [stderr]  2 + name = "ch13-utility-traits"
[INFO] [stderr]    |
[INFO] [stderr] help: to change the binary name to `ch13-utility-traits`, specify `bin.name`
[INFO] [stderr]   --> chapters/ch13_utility_traits/Cargo.toml:10:18
[INFO] [stderr]    |
[INFO] [stderr] 10 ~ workspace = true
[INFO] [stderr] 11 + [[bin]]
[INFO] [stderr] 12 + name = "ch13-utility-traits"
[INFO] [stderr] 13 + path = "src/main.rs"
[INFO] [stderr]    |
[INFO] [stderr] warning: `ch13_utility_traits` (manifest) generated 1 warning
[INFO] [stderr] warning: binary `ch08_crates_modules` should have a kebab-case name
[INFO] [stderr]    |
[INFO] [stderr]  1 | /opt/rustwide/target/.../ch08_crates_modules
[INFO] [stderr]    |                          ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `cargo::non_kebab_case_bins` is set to `warn` by default
[INFO] [stderr] help: to change the binary name to `ch08-crates-modules`, convert `package.name`
[INFO] [stderr]   --> chapters/ch08_crates_modules/Cargo.toml:2:8
[INFO] [stderr]    |
[INFO] [stderr]  2 - name = "ch08_crates_modules"
[INFO] [stderr]  2 + name = "ch08-crates-modules"
[INFO] [stderr]    |
[INFO] [stderr] help: to change the binary name to `ch08-crates-modules`, specify `bin.name`
[INFO] [stderr]   --> chapters/ch08_crates_modules/Cargo.toml:16:12
[INFO] [stderr]    |
[INFO] [stderr] 16 ~ extra = []
[INFO] [stderr] 17 + [[bin]]
[INFO] [stderr] 18 + name = "ch08-crates-modules"
[INFO] [stderr] 19 + path = "src/main.rs"
[INFO] [stderr]    |
[INFO] [stderr] warning: `ch08_crates_modules` (manifest) generated 1 warning
[INFO] [stderr] warning: binary `ch15_iterators` should have a kebab-case name
[INFO] [stderr]    |
[INFO] [stderr]  1 | /opt/rustwide/target/.../ch15_iterators
[INFO] [stderr]    |                          ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `cargo::non_kebab_case_bins` is set to `warn` by default
[INFO] [stderr] help: to change the binary name to `ch15-iterators`, convert `package.name`
[INFO] [stderr]   --> chapters/ch15_iterators/Cargo.toml:2:8
[INFO] [stderr]    |
[INFO] [stderr]  2 - name = "ch15_iterators"
[INFO] [stderr]  2 + name = "ch15-iterators"
[INFO] [stderr]    |
[INFO] [stderr] help: to change the binary name to `ch15-iterators`, specify `bin.name`
[INFO] [stderr]   --> chapters/ch15_iterators/Cargo.toml:10:18
[INFO] [stderr]    |
[INFO] [stderr] 10 ~ workspace = true
[INFO] [stderr] 11 + [[bin]]
[INFO] [stderr] 12 + name = "ch15-iterators"
[INFO] [stderr] 13 + path = "src/main.rs"
[INFO] [stderr]    |
[INFO] [stderr] warning: `ch15_iterators` (manifest) generated 1 warning
[INFO] [stderr] warning: binary `ch18_io` should have a kebab-case name
[INFO] [stderr]    |
[INFO] [stderr]  1 | /opt/rustwide/target/.../ch18_io
[INFO] [stderr]    |                          ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `cargo::non_kebab_case_bins` is set to `warn` by default
[INFO] [stderr] help: to change the binary name to `ch18-io`, convert `package.name`
[INFO] [stderr]   --> chapters/ch18_io/Cargo.toml:2:8
[INFO] [stderr]    |
[INFO] [stderr]  2 - name = "ch18_io"
[INFO] [stderr]  2 + name = "ch18-io"
[INFO] [stderr]    |
[INFO] [stderr] help: to change the binary name to `ch18-io`, specify `bin.name`
[INFO] [stderr]   --> chapters/ch18_io/Cargo.toml:10:18
[INFO] [stderr]    |
[INFO] [stderr] 10 ~ workspace = true
[INFO] [stderr] 11 + [[bin]]
[INFO] [stderr] 12 + name = "ch18-io"
[INFO] [stderr] 13 + path = "src/main.rs"
[INFO] [stderr]    |
[INFO] [stderr] warning: `ch18_io` (manifest) generated 1 warning
[INFO] [stderr]     Checking smallvec v1.15.2
[INFO] [stderr]     Checking memchr v2.8.2
[INFO] [stderr]     Checking either v1.16.0
[INFO] [stderr]     Checking mio v1.2.1
[INFO] [stderr]    Compiling displaydoc v0.2.6
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]    Compiling equator-macro v0.4.2
[INFO] [stderr]    Compiling cc v1.2.64
[INFO] [stderr]     Checking tracing v0.1.44
[INFO] [stderr]     Checking hybrid-array v0.4.12
[INFO] [stderr]     Checking yoke v0.8.3
[INFO] [stderr]    Compiling zerocopy v0.8.52
[INFO] [stderr]    Compiling zerocopy-derive v0.8.52
[INFO] [stderr]    Compiling built v0.8.1
[INFO] [stderr]    Compiling unicode-segmentation v1.13.3
[INFO] [stderr]    Compiling getrandom v0.4.2
[INFO] [stderr]     Checking num-bigint v0.4.6
[INFO] [stderr]     Checking parking_lot_core v0.9.12
[INFO] [stderr]     Checking parking_lot v0.12.5
[INFO] [stderr]     Checking local-waker v0.1.4
[INFO] [stderr]     Checking rayon v1.12.0
[INFO] [stderr]     Checking alloc-no-stdlib v2.0.4
[INFO] [stderr]     Checking zerovec v0.11.6
[INFO] [stderr]     Checking http v0.2.12
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling arg_enum_proc_macro v0.3.4
[INFO] [stderr]     Checking alloc-stdlib v0.2.4
[INFO] [stderr]    Compiling profiling-procmacros v1.0.18
[INFO] [stderr]     Checking tokio v1.52.3
[INFO] [stderr]    Compiling serde_core v1.0.228
[INFO] [stderr]     Checking aho-corasick v1.1.4
[INFO] [stderr]    Compiling rav1e v0.8.1
[INFO] [stderr]    Compiling convert_case v0.10.0
[INFO] [stderr]     Checking no_std_io2 v0.9.4
[INFO] [stderr]     Checking nom v8.0.0
[INFO] [stderr]     Checking equator v0.4.2
[INFO] [stderr]     Checking const-oid v0.10.2
[INFO] [stderr]     Checking block-buffer v0.12.1
[INFO] [stderr]     Checking zerotrie v0.2.4
[INFO] [stderr]     Checking crypto-common v0.2.2
[INFO] [stderr]     Checking ch06_expressions v0.1.0 (/opt/rustwide/workdir/chapters/ch06_expressions)
[INFO] [stderr]    Compiling log v0.4.32
[INFO] [stderr]    Compiling tracing-core v0.1.36
[INFO] [stderr]     Checking regex-syntax v0.8.11
[INFO] [stderr]    Compiling derive_more-impl v2.1.1
[INFO] [stderr]    Compiling time-macros v0.2.29
[INFO] [stderr]    Compiling cookie v0.16.2
[INFO] [stderr]     Checking tinystr v0.8.3
[INFO] [stderr]     Checking potential_utf v0.1.5
[INFO] [stderr]     Checking aligned-vec v0.6.4
[INFO] [stderr]     Checking icu_locale_core v2.2.0
[INFO] [stderr]     Checking icu_collections v2.2.0
[INFO] [stderr]     Checking v_frame v0.3.9
[INFO] [stderr]    Compiling bytestring v1.5.1
[INFO] [stderr]     Checking bitstream-io v4.10.0
[INFO] [stderr]     Checking profiling v1.0.18
[INFO] [stderr]     Checking brotli-decompressor v5.0.3
[INFO] [stderr]     Checking actix-utils v3.0.1
[INFO] [stderr]     Checking num-rational v0.4.2
[INFO] [stderr]     Checking itertools v0.14.0
[INFO] [stderr]     Checking chacha20 v0.10.0
[INFO] [stderr]     Checking icu_provider v2.2.0
[INFO] [stderr]     Checking digest v0.11.3
[INFO] [stderr]    Compiling num-derive v0.4.2
[INFO] [stderr]     Checking actix-service v2.0.3
[INFO] [stderr]    Compiling zstd-sys v2.0.16+zstd.1.5.7
[INFO] [stderr]    Compiling serde_json v1.0.150
[INFO] [stderr]     Checking ch03_basic_types v0.1.0 (/opt/rustwide/workdir/chapters/ch03_basic_types)
[INFO] [stderr]    Compiling regex-lite v0.1.9
[INFO] [stderr]     Checking icu_properties v2.2.0
[INFO] [stderr]     Checking icu_normalizer v2.2.0
[INFO] [stderr]     Checking imgref v1.12.2
[INFO] [stderr]     Checking loop9 v0.1.5
[INFO] [stderr]     Checking rand v0.10.1
[INFO] [stderr]     Checking time v0.3.49
[INFO] [stderr]     Checking sha1 v0.11.0
[INFO] [stderr]     Checking regex-automata v0.4.14
[INFO] [stderr]     Checking brotli v8.0.4
[INFO] [stderr]     Checking local-channel v0.1.5
[INFO] [stderr]     Checking ch07_errors v0.1.0 (/opt/rustwide/workdir/chapters/ch07_errors)
[INFO] [stderr]     Checking socket2 v0.5.10
[INFO] [stderr]     Checking ch16_collections v0.1.0 (/opt/rustwide/workdir/chapters/ch16_collections)
[INFO] [stderr]     Checking ch19_concurrency v0.1.0 (/opt/rustwide/workdir/chapters/ch19_concurrency)
[INFO] [stderr]     Checking ch11_traits_and_generics v0.1.0 (/opt/rustwide/workdir/chapters/ch11_traits_and_generics)
[INFO] [stderr]     Checking ch15_iterators v0.1.0 (/opt/rustwide/workdir/chapters/ch15_iterators)
[INFO] [stderr]     Checking language-tags v0.3.2
[INFO] [stderr]     Checking ch10_enums_patterns v0.1.0 (/opt/rustwide/workdir/chapters/ch10_enums_patterns)
[INFO] [stderr]     Checking ch14_closures v0.1.0 (/opt/rustwide/workdir/chapters/ch14_closures)
[INFO] [stderr]     Checking ch18_io v0.1.0 (/opt/rustwide/workdir/chapters/ch18_io)
[INFO] [stderr]    Compiling owo-colors v4.3.0
[INFO] [stderr]     Checking ch09_structs v0.1.0 (/opt/rustwide/workdir/chapters/ch09_structs)
[INFO] [stderr]     Checking ch13_utility_traits v0.1.0 (/opt/rustwide/workdir/chapters/ch13_utility_traits)
[INFO] [stderr]     Checking ch17_strings_text v0.1.0 (/opt/rustwide/workdir/chapters/ch17_strings_text)
[INFO] [stderr]     Checking ch05_references v0.1.0 (/opt/rustwide/workdir/chapters/ch05_references)
[INFO] [stderr]     Checking ch08_crates_modules v0.1.0 (/opt/rustwide/workdir/chapters/ch08_crates_modules)
[INFO] [stderr]     Checking foldhash v0.1.5
[INFO] [stderr]     Checking ch12_operator_overloading v0.1.0 (/opt/rustwide/workdir/chapters/ch12_operator_overloading)
[INFO] [stderr]     Checking moxcms v0.8.1
[INFO] [stderr]     Checking av-scenechange v0.14.1
[INFO] [stderr]     Checking idna_adapter v1.2.2
[INFO] [stderr]     Checking maybe-rayon v0.1.1
[INFO] [stderr]     Checking idna v1.1.0
[INFO] [stderr]     Checking num-iter v0.1.45
[INFO] [stderr]    Compiling actix-macros v0.2.4
[INFO] [stderr]     Checking num-complex v0.4.6
[INFO] [stderr]     Checking crossbeam-queue v0.3.12
[INFO] [stderr]     Checking url v2.5.8
[INFO] [stderr]     Checking crossbeam-channel v0.5.15
[INFO] [stderr]     Checking impl-more v0.1.9
[INFO] [stderr]     Checking ch04_ownership v0.1.0 (/opt/rustwide/workdir/chapters/ch04_ownership)
[INFO] [stderr] error: could not compile `serde_core` (lib)
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/79c0559184f27f4433a6fbc260b950d06d4a4889/bin/rustc --crate-name serde_core --edition=2021 /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/serde_core-1.0.228/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat,unused-externs-silent --crate-type lib --emit=dep-info,metadata,link -Z embed-metadata=no -C embed-bitcode=no --cfg 'feature="result"' --cfg 'feature="std"' --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values("alloc", "default", "rc", "result", "std", "unstable"))' -C metadata=f40da714989ef539 -C extra-filename=-15029d6db9a43cb4 --out-dir /opt/rustwide/target/debug/build/serde_core/15029d6db9a43cb4/out --cap-lints allow --cap-lints=forbid --force-warn=unused_crate_dependencies --check-cfg 'cfg(if_docsrs_then_no_serde_core)' --check-cfg 'cfg(no_core_cstr)' --check-cfg 'cfg(no_core_error)' --check-cfg 'cfg(no_core_net)' --check-cfg 'cfg(no_core_num_saturating)' --check-cfg 'cfg(no_diagnostic_namespace)' --check-cfg 'cfg(no_serde_derive)' --check-cfg 'cfg(no_std_atomic)' --check-cfg 'cfg(no_std_atomic64)' --check-cfg 'cfg(no_target_has_atomic)'` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `tokio` (lib)
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/79c0559184f27f4433a6fbc260b950d06d4a4889/bin/rustc --crate-name tokio --edition=2021 /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.52.3/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat,unused-externs-silent --crate-type lib --emit=dep-info,metadata -C embed-bitcode=no -C debuginfo=2 --cfg 'feature="bytes"' --cfg 'feature="default"' --cfg 'feature="io-util"' --cfg 'feature="libc"' --cfg 'feature="macros"' --cfg 'feature="mio"' --cfg 'feature="net"' --cfg 'feature="parking_lot"' --cfg 'feature="rt"' --cfg 'feature="rt-multi-thread"' --cfg 'feature="signal"' --cfg 'feature="signal-hook-registry"' --cfg 'feature="socket2"' --cfg 'feature="sync"' --cfg 'feature="time"' --cfg 'feature="tokio-macros"' --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values("bytes", "default", "fs", "full", "io-std", "io-uring", "io-util", "libc", "macros", "mio", "net", "parking_lot", "process", "rt", "rt-multi-thread", "signal", "signal-hook-registry", "socket2", "sync", "taskdump", "test-util", "time", "tokio-macros", "tracing", "windows-sys"))' -C metadata=e51c843075cc988e -C extra-filename=-39c3e94696981646 --out-dir /opt/rustwide/target/debug/build/tokio/39c3e94696981646/out -L dependency=/opt/rustwide/target/debug/build/cfg-if/190c9021fd162845/out -L dependency=/opt/rustwide/target/debug/build/errno/0997ff084336fcdf/out -L dependency=/opt/rustwide/target/debug/build/libc/7d2af120e89c619c/out -L dependency=/opt/rustwide/target/debug/build/lock_api/b47e4fe57039b3cf/out -L dependency=/opt/rustwide/target/debug/build/log/a6cca596def26a9d/out -L dependency=/opt/rustwide/target/debug/build/parking_lot_core/67e845d29b69e931/out -L dependency=/opt/rustwide/target/debug/build/scopeguard/e7d227cb308b3799/out -L dependency=/opt/rustwide/target/debug/build/smallvec/080f157bb083b6ef/out --extern bytes=/opt/rustwide/target/debug/build/bytes/c3c82aecfaa31497/out/libbytes-c3c82aecfaa31497.rmeta --extern libc=/opt/rustwide/target/debug/build/libc/7d2af120e89c619c/out/liblibc-7d2af120e89c619c.rmeta --extern mio=/opt/rustwide/target/debug/build/mio/371e594e47727c69/out/libmio-371e594e47727c69.rmeta --extern parking_lot=/opt/rustwide/target/debug/build/parking_lot/9d921e15245fc8a4/out/libparking_lot-9d921e15245fc8a4.rmeta --extern pin_project_lite=/opt/rustwide/target/debug/build/pin-project-lite/7176d3be2b7ee2e1/out/libpin_project_lite-7176d3be2b7ee2e1.rmeta --extern signal_hook_registry=/opt/rustwide/target/debug/build/signal-hook-registry/11629a25a8623d3d/out/libsignal_hook_registry-11629a25a8623d3d.rmeta --extern socket2=/opt/rustwide/target/debug/build/socket2/dfdbce0a7bcef759/out/libsocket2-dfdbce0a7bcef759.rmeta --extern tokio_macros=/opt/rustwide/target/debug/build/tokio-macros/08b96a339cb6ecf1/out/libtokio_macros-08b96a339cb6ecf1.so --cap-lints allow --cap-lints=forbid --force-warn=unused_crate_dependencies` (signal: 9, SIGKILL: kill)
[INFO] running `Command { std: "docker" "inspect" "f91dbf8574b059a5d0cd9bf4ad5d4ebcab17f7c292588af56cce1d5d4051a566", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f91dbf8574b059a5d0cd9bf4ad5d4ebcab17f7c292588af56cce1d5d4051a566", kill_on_drop: false }`
[INFO] [stdout] f91dbf8574b059a5d0cd9bf4ad5d4ebcab17f7c292588af56cce1d5d4051a566
