[INFO] cloning repository https://github.com/flowerlake/rust_learning
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/flowerlake/rust_learning" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fflowerlake%2Frust_learning", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fflowerlake%2Frust_learning'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 661cfd45417194e68337491e84612e10a276192c
[INFO] checking flowerlake/rust_learning against try#099af82bc034c1e4895c90e5407fafdd61976cdb for pr-145457
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fflowerlake%2Frust_learning" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/flowerlake/rust_learning
[INFO] finished tweaking git repo https://github.com/flowerlake/rust_learning
[INFO] tweaked toml for git repo https://github.com/flowerlake/rust_learning written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/flowerlake/rust_learning on toolchain 099af82bc034c1e4895c90e5407fafdd61976cdb
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+099af82bc034c1e4895c90e5407fafdd61976cdb" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/flowerlake/rust_learning 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" "+099af82bc034c1e4895c90e5407fafdd61976cdb" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+099af82bc034c1e4895c90e5407fafdd61976cdb" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6452382685fac7626db8749da92550e91bc6b4ecc503eb18ccfa87b7806cf6d8
[INFO] running `Command { std: "docker" "start" "-a" "6452382685fac7626db8749da92550e91bc6b4ecc503eb18ccfa87b7806cf6d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6452382685fac7626db8749da92550e91bc6b4ecc503eb18ccfa87b7806cf6d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6452382685fac7626db8749da92550e91bc6b4ecc503eb18ccfa87b7806cf6d8", kill_on_drop: false }`
[INFO] [stdout] 6452382685fac7626db8749da92550e91bc6b4ecc503eb18ccfa87b7806cf6d8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+099af82bc034c1e4895c90e5407fafdd61976cdb" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3e98c30b61df0f9063cbb14be7b67d1b615f9653a0720b15881a917d26af7b6a
[INFO] running `Command { std: "docker" "start" "-a" "3e98c30b61df0f9063cbb14be7b67d1b615f9653a0720b15881a917d26af7b6a", kill_on_drop: false }`
[INFO] [stderr]     Checking rust_learning v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `SGen` is never constructed
[INFO] [stdout]  --> src/generic_test.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct SGen {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Generic` is never constructed
[INFO] [stdout]  --> src/generic_test.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | struct Generic<T> {
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get` is never used
[INFO] [stdout]   --> src/generic_test.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout]  9 | impl SGen {
[INFO] [stdout]    | --------- method in this implementation
[INFO] [stdout] 10 |     pub fn get(&self) -> &u32 { &self.val }
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get` is never used
[INFO] [stdout]   --> src/generic_test.rs:14:12
[INFO] [stdout]    |
[INFO] [stdout] 13 | impl<T> Generic<T> {
[INFO] [stdout]    | ------------------ method in this implementation
[INFO] [stdout] 14 |     pub fn get(&self) -> &T { &self.val }
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of unresolved module or unlinked crate `rary`
[INFO] [stdout]    --> src/main.rs:175:14
[INFO] [stdout]     |
[INFO] [stdout] 175 |     let res= rary::add(1, 3);
[INFO] [stdout]     |              ^^^^ use of unresolved module or unlinked crate `rary`
[INFO] [stdout]     |
[INFO] [stdout]     = help: if you wanted to use a crate named `rary`, use `cargo add rary` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of unresolved module or unlinked crate `rary2`
[INFO] [stdout]    --> src/main.rs:177:5
[INFO] [stdout]     |
[INFO] [stdout] 177 |     rary2::indirect_access();
[INFO] [stdout]     |     ^^^^^ use of unresolved module or unlinked crate `rary2`
[INFO] [stdout]     |
[INFO] [stdout] help: to make use of source file src/rary2.rs, use `mod rary2` in this file to declare the module
[INFO] [stdout]     |
[INFO] [stdout]   2 + mod rary2;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of unresolved module or unlinked crate `rary`
[INFO] [stdout]    --> src/main.rs:175:14
[INFO] [stdout]     |
[INFO] [stdout] 175 |     let res= rary::add(1, 3);
[INFO] [stdout]     |              ^^^^ use of unresolved module or unlinked crate `rary`
[INFO] [stdout]     |
[INFO] [stdout]     = help: if you wanted to use a crate named `rary`, use `cargo add rary` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of unresolved module or unlinked crate `rary2`
[INFO] [stdout]    --> src/main.rs:177:5
[INFO] [stdout]     |
[INFO] [stdout] 177 |     rary2::indirect_access();
[INFO] [stdout]     |     ^^^^^ use of unresolved module or unlinked crate `rary2`
[INFO] [stdout]     |
[INFO] [stdout] help: to make use of source file src/rary2.rs, use `mod rary2` in this file to declare the module
[INFO] [stdout]     |
[INFO] [stdout]   2 + mod rary2;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]    --> src/main.rs:116:48
[INFO] [stdout]     |
[INFO] [stdout] 116 |                 Color::RGB2(Some(n@ 13..= 20), y, z)=>println!("Option bind {}", n),
[INFO] [stdout]     |                                                ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]    --> src/main.rs:116:48
[INFO] [stdout]     |
[INFO] [stdout] 116 |                 Color::RGB2(Some(n@ 13..= 20), y, z)=>println!("Option bind {}", n),
[INFO] [stdout]     |                                                ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `z`
[INFO] [stdout]    --> src/main.rs:116:51
[INFO] [stdout]     |
[INFO] [stdout] 116 |                 Color::RGB2(Some(n@ 13..= 20), y, z)=>println!("Option bind {}", n),
[INFO] [stdout]     |                                                   ^ help: if this is intentional, prefix it with an underscore: `_z`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]    --> src/main.rs:117:38
[INFO] [stdout]     |
[INFO] [stdout] 117 |                 Color::RGB2(Some(n), y, z)=>println!("Option bind2 {}", n),
[INFO] [stdout]     |                                      ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `z`
[INFO] [stdout]    --> src/main.rs:116:51
[INFO] [stdout]     |
[INFO] [stdout] 116 |                 Color::RGB2(Some(n@ 13..= 20), y, z)=>println!("Option bind {}", n),
[INFO] [stdout]     |                                                   ^ help: if this is intentional, prefix it with an underscore: `_z`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `z`
[INFO] [stdout]    --> src/main.rs:117:41
[INFO] [stdout]     |
[INFO] [stdout] 117 |                 Color::RGB2(Some(n), y, z)=>println!("Option bind2 {}", n),
[INFO] [stdout]     |                                         ^ help: if this is intentional, prefix it with an underscore: `_z`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]    --> src/main.rs:117:38
[INFO] [stdout]     |
[INFO] [stdout] 117 |                 Color::RGB2(Some(n), y, z)=>println!("Option bind2 {}", n),
[INFO] [stdout]     |                                      ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `z`
[INFO] [stdout]    --> src/main.rs:117:41
[INFO] [stdout]     |
[INFO] [stdout] 117 |                 Color::RGB2(Some(n), y, z)=>println!("Option bind2 {}", n),
[INFO] [stdout]     |                                         ^ help: if this is intentional, prefix it with an underscore: `_z`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `binary`
[INFO] [stdout]    --> src/main.rs:136:13
[INFO] [stdout]     |
[INFO] [stdout] 136 |         let binary = match boolean {
[INFO] [stdout]     |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_binary`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `binary`
[INFO] [stdout]    --> src/main.rs:136:13
[INFO] [stdout]     |
[INFO] [stdout] 136 |         let binary = match boolean {
[INFO] [stdout]     |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_binary`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `some_var`
[INFO] [stdout]    --> src/main.rs:145:13
[INFO] [stdout]     |
[INFO] [stdout] 145 |         let some_var = Color::RGB(1, 2, 3);
[INFO] [stdout]     |             ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_some_var`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `some_var`
[INFO] [stdout]    --> src/main.rs:145:13
[INFO] [stdout]     |
[INFO] [stdout] 145 |         let some_var = Color::RGB(1, 2, 3);
[INFO] [stdout]     |             ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_some_var`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rust_learning` (bin "rust_learning") due to 2 previous errors; 6 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `rust_learning` (bin "rust_learning" test) due to 2 previous errors; 6 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "3e98c30b61df0f9063cbb14be7b67d1b615f9653a0720b15881a917d26af7b6a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3e98c30b61df0f9063cbb14be7b67d1b615f9653a0720b15881a917d26af7b6a", kill_on_drop: false }`
[INFO] [stdout] 3e98c30b61df0f9063cbb14be7b67d1b615f9653a0720b15881a917d26af7b6a