[INFO] cloning repository https://github.com/eda3/rust_by_example
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/eda3/rust_by_example" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Feda3%2Frust_by_example", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Feda3%2Frust_by_example'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6a6ce944bf302d0525297dbb34073341a008778a
[INFO] testing eda3/rust_by_example against beta-2023-04-20 for beta-1.70-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Feda3%2Frust_by_example" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/eda3/rust_by_example on toolchain beta-2023-04-20
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-04-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/eda3/rust_by_example
[INFO] finished tweaking git repo https://github.com/eda3/rust_by_example
[INFO] tweaked toml for git repo https://github.com/eda3/rust_by_example written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/eda3/rust_by_example 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" "+beta-2023-04-20" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-04-20" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4ebc6fcee88d3d5493db3a69ac64dbfa35a5213175955677fab59cf09ff6c62b
[INFO] running `Command { std: "docker" "start" "-a" "4ebc6fcee88d3d5493db3a69ac64dbfa35a5213175955677fab59cf09ff6c62b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4ebc6fcee88d3d5493db3a69ac64dbfa35a5213175955677fab59cf09ff6c62b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4ebc6fcee88d3d5493db3a69ac64dbfa35a5213175955677fab59cf09ff6c62b", kill_on_drop: false }`
[INFO] [stdout] 4ebc6fcee88d3d5493db3a69ac64dbfa35a5213175955677fab59cf09ff6c62b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-04-20" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0940b222fe431ea4c95c2b5fe6f063d35b4105ddc0037f3ff1a2fce0f36c6424
[INFO] running `Command { std: "docker" "start" "-a" "0940b222fe431ea4c95c2b5fe6f063d35b4105ddc0037f3ff1a2fce0f36c6424", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust_by_example v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unknown lint: `de`
[INFO] [stdout]   --> src/bin/10-1-0_visibility.rs:76:13
[INFO] [stdout]    |
[INFO] [stdout] 76 |     #[allow(de)]
[INFO] [stdout]    |             ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unknown_lints)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `private_function` is never used
[INFO] [stdout]  --> src/bin/10-1-0_visibility.rs:5:6
[INFO] [stdout]   |
[INFO] [stdout] 5 |   fn private_function() {
[INFO] [stdout]   |      ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `indirect_access` is never used
[INFO] [stdout]   --> src/bin/10-1-0_visibility.rs:15:10
[INFO] [stdout]    |
[INFO] [stdout] 15 |   pub fn indirect_access() {
[INFO] [stdout]    |          ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `call_public_function_in_my_mod` is never used
[INFO] [stdout]   --> src/bin/10-1-0_visibility.rs:54:10
[INFO] [stdout]    |
[INFO] [stdout] 54 |   pub fn call_public_function_in_my_mod() {
[INFO] [stdout]    |          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `public_function_in_crate` is never used
[INFO] [stdout]   --> src/bin/10-1-0_visibility.rs:62:17
[INFO] [stdout]    |
[INFO] [stdout] 62 |   pub(crate) fn public_function_in_crate() {
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `function` is never used
[INFO] [stdout]   --> src/bin/10-1-0_visibility.rs:22:12
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pub fn function() {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `public_function_in_my_mod` is never used
[INFO] [stdout]   --> src/bin/10-1-0_visibility.rs:36:30
[INFO] [stdout]    |
[INFO] [stdout] 36 |     pub(in crate::my_mod) fn public_function_in_my_mod() {
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `public_function_in_nested` is never used
[INFO] [stdout]   --> src/bin/10-1-0_visibility.rs:43:18
[INFO] [stdout]    |
[INFO] [stdout] 43 |     pub(self) fn public_function_in_nested() {
[INFO] [stdout]    |                  ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `public_function_in_super_mod` is never used
[INFO] [stdout]   --> src/bin/10-1-0_visibility.rs:49:19
[INFO] [stdout]    |
[INFO] [stdout] 49 |     pub(super) fn public_function_in_super_mod() {
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `restricted_function` is never used
[INFO] [stdout]   --> src/bin/10-1-0_visibility.rs:77:19
[INFO] [stdout]    |
[INFO] [stdout] 77 |     pub(crate) fn restricted_function() {
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: path statement with no effect
[INFO] [stdout]  --> src/bin/07-0_expression.rs:6:3
[INFO] [stdout]   |
[INFO] [stdout] 6 |   x;
[INFO] [stdout]   |   ^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(path_statements)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused arithmetic operation that must be used
[INFO] [stdout]  --> src/bin/07-0_expression.rs:7:3
[INFO] [stdout]   |
[INFO] [stdout] 7 |   x + 1;
[INFO] [stdout]   |   ^^^^^ the arithmetic operation produces a value
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]   |
[INFO] [stdout] 7 |   let _ = x + 1;
[INFO] [stdout]   |   +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused arithmetic operation that must be used
[INFO] [stdout]   --> src/bin/07-0_expression.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 |     2 * x;
[INFO] [stdout]    |     ^^^^^ the arithmetic operation produces a value
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 22 |     let _ = 2 * x;
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `noisy_unused_variable`
[INFO] [stdout]   --> src/bin/04-0_variable_bindings.rs:19:7
[INFO] [stdout]    |
[INFO] [stdout] 19 |   let noisy_unused_variable = 2u32;
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_noisy_unused_variable`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `short_lived_binding`
[INFO] [stdout]  --> src/bin/04-2-0_scope.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let short_lived_binding = 2;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_short_lived_binding`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0053]: method `contains` has an incompatible type for trait
[INFO] [stdout]   --> src/bin/14-8-2-types.rs:21:32
[INFO] [stdout]    |
[INFO] [stdout] 21 |   fn contains(&self, number_1: &i32, number_2: &i32) -> bool {
[INFO] [stdout]    |                                ^^^^
[INFO] [stdout]    |                                |
[INFO] [stdout]    |                                expected `i32`, found `&i32`
[INFO] [stdout]    |                                help: change the parameter type to match the trait: `i32`
[INFO] [stdout]    |
[INFO] [stdout] note: type in trait
[INFO] [stdout]   --> src/bin/14-8-2-types.rs:10:25
[INFO] [stdout]    |
[INFO] [stdout] 10 |   fn contains(&self, _: Self::A, _: &Self::B) -> bool;
[INFO] [stdout]    |                         ^^^^^^^
[INFO] [stdout]    = note: expected signature `fn(&Container, i32, &i32) -> _`
[INFO] [stdout]               found signature `fn(&Container, &i32, &i32) -> _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/bin/14-8-2-types.rs:50:24
[INFO] [stdout]    |
[INFO] [stdout] 50 |     container.contains(&number_1, &number_2)
[INFO] [stdout]    |               -------- ^^^^^^^^^ expected `i32`, found `&i32`
[INFO] [stdout]    |               |
[INFO] [stdout]    |               arguments to this method are incorrect
[INFO] [stdout]    |
[INFO] [stdout] note: method defined here
[INFO] [stdout]   --> src/bin/14-8-2-types.rs:10:6
[INFO] [stdout]    |
[INFO] [stdout] 10 |   fn contains(&self, _: Self::A, _: &Self::B) -> bool;
[INFO] [stdout]    |      ^^^^^^^^
[INFO] [stdout] help: consider removing the borrow
[INFO] [stdout]    |
[INFO] [stdout] 50 -     container.contains(&number_1, &number_2)
[INFO] [stdout] 50 +     container.contains(number_1, &number_2)
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `name` and `age` are never read
[INFO] [stdout]  --> src/bin/03-1-0_structs.rs:4:3
[INFO] [stdout]   |
[INFO] [stdout] 2 | struct Person<'a> {
[INFO] [stdout]   |        ------ fields in this struct
[INFO] [stdout] 3 |   // 'a はライフタイムの設定
[INFO] [stdout] 4 |   name: &'a str,
[INFO] [stdout]   |   ^^^^
[INFO] [stdout] 5 |   age: u8,
[INFO] [stdout]   |   ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Person` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0053, E0308.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0053`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rust_by_example` (bin "14-8-2-types") due to 3 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "0940b222fe431ea4c95c2b5fe6f063d35b4105ddc0037f3ff1a2fce0f36c6424", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0940b222fe431ea4c95c2b5fe6f063d35b4105ddc0037f3ff1a2fce0f36c6424", kill_on_drop: false }`
[INFO] [stdout] 0940b222fe431ea4c95c2b5fe6f063d35b4105ddc0037f3ff1a2fce0f36c6424
