[INFO] cloning repository https://github.com/harol5/rust-notes
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/harol5/rust-notes" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fharol5%2Frust-notes", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fharol5%2Frust-notes'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6818b999fee156f9c7382001d4d3ac29c16e7ae8
[INFO] testing harol5/rust-notes against 1.85.0 for beta-1.86-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fharol5%2Frust-notes" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/harol5/rust-notes on toolchain 1.85.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.85.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/harol5/rust-notes
[INFO] finished tweaking git repo https://github.com/harol5/rust-notes
[INFO] tweaked toml for git repo https://github.com/harol5/rust-notes written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/harol5/rust-notes 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" "+1.85.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+1.85.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c797befe9980efd832ca259753865c7a926c179a9072faf5b3b475e352f22b42
[INFO] running `Command { std: "docker" "start" "-a" "c797befe9980efd832ca259753865c7a926c179a9072faf5b3b475e352f22b42", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c797befe9980efd832ca259753865c7a926c179a9072faf5b3b475e352f22b42", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c797befe9980efd832ca259753865c7a926c179a9072faf5b3b475e352f22b42", kill_on_drop: false }`
[INFO] [stdout] c797befe9980efd832ca259753865c7a926c179a9072faf5b3b475e352f22b42
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+1.85.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a179f0e308adf1ca9b5e69d93d9990fa69ff45f03af857be90b58159f0f44f92
[INFO] running `Command { std: "docker" "start" "-a" "a179f0e308adf1ca9b5e69d93d9990fa69ff45f03af857be90b58159f0f44f92", kill_on_drop: false }`
[INFO] [stderr]    Compiling hello_world v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/variables.rs:3:10
[INFO] [stdout]   |
[INFO] [stdout] 3 |      let mut a: i32 = 1;
[INFO] [stdout]   |          ----^
[INFO] [stdout]   |          |
[INFO] [stdout]   |          help: remove this `mut`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `country`
[INFO] [stdout]   --> src/variables.rs:81:14
[INFO] [stdout]    |
[INFO] [stdout] 81 |      let mut country: String = String::with_capacity(10);     
[INFO] [stdout]    |              ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_country`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/variables.rs:81:10
[INFO] [stdout]    |
[INFO] [stdout] 81 |      let mut country: String = String::with_capacity(10);     
[INFO] [stdout]    |          ----^^^^^^^
[INFO] [stdout]    |          |
[INFO] [stdout]    |          help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `types` is never used
[INFO] [stdout]  --> src/variables.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn types(){
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `primitive` is never used
[INFO] [stdout]   --> src/variables.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub fn primitive(){
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `strings` is never used
[INFO] [stdout]   --> src/variables.rs:43:8
[INFO] [stdout]    |
[INFO] [stdout] 43 | pub fn strings(){
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]  --> src/print.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn run(){
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `String::capacity` that must be used
[INFO] [stdout]   --> src/variables.rs:63:6
[INFO] [stdout]    |
[INFO] [stdout] 63 |      last_name.capacity();
[INFO] [stdout]    |      ^^^^^^^^^^^^^^^^^^^^
[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] 63 |      let _ = last_name.capacity();
[INFO] [stdout]    |      +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `String::is_empty` that must be used
[INFO] [stdout]   --> src/variables.rs:66:6
[INFO] [stdout]    |
[INFO] [stdout] 66 |      last_name.is_empty();
[INFO] [stdout]    |      ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 66 |      let _ = last_name.is_empty();
[INFO] [stdout]    |      +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.18s
[INFO] running `Command { std: "docker" "inspect" "a179f0e308adf1ca9b5e69d93d9990fa69ff45f03af857be90b58159f0f44f92", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a179f0e308adf1ca9b5e69d93d9990fa69ff45f03af857be90b58159f0f44f92", kill_on_drop: false }`
[INFO] [stdout] a179f0e308adf1ca9b5e69d93d9990fa69ff45f03af857be90b58159f0f44f92
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+1.85.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 154e339b7828dd0fa98508fb3e1527a34cbf07c95db4ba4f2c12bbae01cefa95
[INFO] running `Command { std: "docker" "start" "-a" "154e339b7828dd0fa98508fb3e1527a34cbf07c95db4ba4f2c12bbae01cefa95", kill_on_drop: false }`
[INFO] [stderr]    Compiling hello_world v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/variables.rs:3:10
[INFO] [stdout]   |
[INFO] [stdout] 3 |      let mut a: i32 = 1;
[INFO] [stdout]   |          ----^
[INFO] [stdout]   |          |
[INFO] [stdout]   |          help: remove this `mut`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `country`
[INFO] [stdout]   --> src/variables.rs:81:14
[INFO] [stdout]    |
[INFO] [stdout] 81 |      let mut country: String = String::with_capacity(10);     
[INFO] [stdout]    |              ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_country`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/variables.rs:81:10
[INFO] [stdout]    |
[INFO] [stdout] 81 |      let mut country: String = String::with_capacity(10);     
[INFO] [stdout]    |          ----^^^^^^^
[INFO] [stdout]    |          |
[INFO] [stdout]    |          help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `types` is never used
[INFO] [stdout]  --> src/variables.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn types(){
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `primitive` is never used
[INFO] [stdout]   --> src/variables.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub fn primitive(){
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `strings` is never used
[INFO] [stdout]   --> src/variables.rs:43:8
[INFO] [stdout]    |
[INFO] [stdout] 43 | pub fn strings(){
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]  --> src/print.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn run(){
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `String::capacity` that must be used
[INFO] [stdout]   --> src/variables.rs:63:6
[INFO] [stdout]    |
[INFO] [stdout] 63 |      last_name.capacity();
[INFO] [stdout]    |      ^^^^^^^^^^^^^^^^^^^^
[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] 63 |      let _ = last_name.capacity();
[INFO] [stdout]    |      +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `String::is_empty` that must be used
[INFO] [stdout]   --> src/variables.rs:66:6
[INFO] [stdout]    |
[INFO] [stdout] 66 |      last_name.is_empty();
[INFO] [stdout]    |      ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 66 |      let _ = last_name.is_empty();
[INFO] [stdout]    |      +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.24s
[INFO] running `Command { std: "docker" "inspect" "154e339b7828dd0fa98508fb3e1527a34cbf07c95db4ba4f2c12bbae01cefa95", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "154e339b7828dd0fa98508fb3e1527a34cbf07c95db4ba4f2c12bbae01cefa95", kill_on_drop: false }`
[INFO] [stdout] 154e339b7828dd0fa98508fb3e1527a34cbf07c95db4ba4f2c12bbae01cefa95
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+1.85.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 0500a6a6a9323fce699d89c8855d01799ddc0a488b9b271e51ada9a79755d255
[INFO] running `Command { std: "docker" "start" "-a" "0500a6a6a9323fce699d89c8855d01799ddc0a488b9b271e51ada9a79755d255", kill_on_drop: false }`
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> src/variables.rs:3:10
[INFO] [stderr]   |
[INFO] [stderr] 3 |      let mut a: i32 = 1;
[INFO] [stderr]   |          ----^
[INFO] [stderr]   |          |
[INFO] [stderr]   |          help: remove this `mut`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `country`
[INFO] [stderr]   --> src/variables.rs:81:14
[INFO] [stderr]    |
[INFO] [stderr] 81 |      let mut country: String = String::with_capacity(10);     
[INFO] [stderr]    |              ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_country`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/variables.rs:81:10
[INFO] [stderr]    |
[INFO] [stderr] 81 |      let mut country: String = String::with_capacity(10);     
[INFO] [stderr]    |          ----^^^^^^^
[INFO] [stderr]    |          |
[INFO] [stderr]    |          help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: function `types` is never used
[INFO] [stderr]  --> src/variables.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub fn types(){
[INFO] [stderr]   |        ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `primitive` is never used
[INFO] [stderr]   --> src/variables.rs:14:8
[INFO] [stderr]    |
[INFO] [stderr] 14 | pub fn primitive(){
[INFO] [stderr]    |        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `strings` is never used
[INFO] [stderr]   --> src/variables.rs:43:8
[INFO] [stderr]    |
[INFO] [stderr] 43 | pub fn strings(){
[INFO] [stderr]    |        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `run` is never used
[INFO] [stderr]  --> src/print.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub fn run(){
[INFO] [stderr]   |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `String::capacity` that must be used
[INFO] [stderr]   --> src/variables.rs:63:6
[INFO] [stderr]    |
[INFO] [stderr] 63 |      last_name.capacity();
[INFO] [stderr]    |      ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]    |
[INFO] [stderr] 63 |      let _ = last_name.capacity();
[INFO] [stderr]    |      +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `String::is_empty` that must be used
[INFO] [stderr]   --> src/variables.rs:66:6
[INFO] [stderr]    |
[INFO] [stderr] 66 |      last_name.is_empty();
[INFO] [stderr]    |      ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]    |
[INFO] [stderr] 66 |      let _ = last_name.is_empty();
[INFO] [stderr]    |      +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: `hello_world` (bin "hello_world" test) generated 9 warnings (run `cargo fix --bin "hello_world" --tests` to apply 2 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/hello_world-30479f712482cd31)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "0500a6a6a9323fce699d89c8855d01799ddc0a488b9b271e51ada9a79755d255", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0500a6a6a9323fce699d89c8855d01799ddc0a488b9b271e51ada9a79755d255", kill_on_drop: false }`
[INFO] [stdout] 0500a6a6a9323fce699d89c8855d01799ddc0a488b9b271e51ada9a79755d255