[INFO] cloning repository https://github.com/FranElfers/hello-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/FranElfers/hello-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFranElfers%2Fhello-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFranElfers%2Fhello-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] bcf51041b0598eb4cda35350e79ebfbc1cc81bc5
[INFO] testing FranElfers/hello-rust against try#8de4c7234dd9b97c9d76b58671343fdbbc9a433e+target=x86_64-unknown-linux-musl for musl_upgrade_1_2_5_with_libc_patch_0
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFranElfers%2Fhello-rust" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/FranElfers/hello-rust
[INFO] finished tweaking git repo https://github.com/FranElfers/hello-rust
[INFO] tweaked toml for git repo https://github.com/FranElfers/hello-rust written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/FranElfers/hello-rust on toolchain 8de4c7234dd9b97c9d76b58671343fdbbc9a433e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/FranElfers/hello-rust 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" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] eae7b5d941c18010bb6ba29274af3649decfb1a172cd0ef67e11733bce4e8d6e
[INFO] running `Command { std: "docker" "start" "-a" "eae7b5d941c18010bb6ba29274af3649decfb1a172cd0ef67e11733bce4e8d6e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "eae7b5d941c18010bb6ba29274af3649decfb1a172cd0ef67e11733bce4e8d6e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eae7b5d941c18010bb6ba29274af3649decfb1a172cd0ef67e11733bce4e8d6e", kill_on_drop: false }`
[INFO] [stdout] eae7b5d941c18010bb6ba29274af3649decfb1a172cd0ef67e11733bce4e8d6e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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=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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "build" "--frozen" "--message-format=json" "--target" "x86_64-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] d608512bdfd42baf1350db9bdedcb9eb37bb9f63c044bc1f6db140d2af44c5a5
[INFO] running `Command { std: "docker" "start" "-a" "d608512bdfd42baf1350db9bdedcb9eb37bb9f63c044bc1f6db140d2af44c5a5", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.125
[INFO] [stderr]    Compiling getrandom v0.2.6
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling hello-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `x` is never read
[INFO] [stdout]    --> src/main.rs:128:13
[INFO] [stdout]     |
[INFO] [stdout] 128 |     let mut x = 10;
[INFO] [stdout]     |             ^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]    --> src/main.rs:132:13
[INFO] [stdout]     |
[INFO] [stdout] 132 |         let y = 5;
[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: `x`
[INFO] [stdout]    --> src/main.rs:141:13
[INFO] [stdout]     |
[INFO] [stdout] 141 |         let x = 15; // now local var 
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `specific`
[INFO] [stdout]    --> src/main.rs:207:9
[INFO] [stdout]     |
[INFO] [stdout] 207 |     let specific: [i32; 5] = [1,2,3,4,5]; // [type; length] (not actually required)
[INFO] [stdout]     |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_specific`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `default`
[INFO] [stdout]    --> src/main.rs:213:9
[INFO] [stdout]     |
[INFO] [stdout] 213 |     let default = [2; 100]; // a list of 2s with length of 100: [2,2,2,...]
[INFO] [stdout]     |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_default`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tokens`
[INFO] [stdout]    --> src/main.rs:261:9
[INFO] [stdout]     |
[INFO] [stdout] 261 |     let tokens: Vec<&str> = my_string.split("?").collect();
[INFO] [stdout]     |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_tokens`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `trimmed`
[INFO] [stdout]    --> src/main.rs:264:9
[INFO] [stdout]     |
[INFO] [stdout] 264 |     let trimmed = my_string.trim();
[INFO] [stdout]     |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_trimmed`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `my_vector1`
[INFO] [stdout]    --> src/main.rs:327:9
[INFO] [stdout]     |
[INFO] [stdout] 327 |     let my_vector1:Vec<i32> = Vec::new();
[INFO] [stdout]     |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_my_vector1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.65s
[INFO] running `Command { std: "docker" "inspect" "d608512bdfd42baf1350db9bdedcb9eb37bb9f63c044bc1f6db140d2af44c5a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d608512bdfd42baf1350db9bdedcb9eb37bb9f63c044bc1f6db140d2af44c5a5", kill_on_drop: false }`
[INFO] [stdout] d608512bdfd42baf1350db9bdedcb9eb37bb9f63c044bc1f6db140d2af44c5a5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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=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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "test" "--frozen" "--no-run" "--message-format=json" "--target" "x86_64-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] c54d0e6230001093b434dc1ef448b73a1d8cca69a41fbf85e263909c4fe436be
[INFO] running `Command { std: "docker" "start" "-a" "c54d0e6230001093b434dc1ef448b73a1d8cca69a41fbf85e263909c4fe436be", kill_on_drop: false }`
[INFO] [stderr]    Compiling hello-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `x` is never read
[INFO] [stdout]    --> src/main.rs:128:13
[INFO] [stdout]     |
[INFO] [stdout] 128 |     let mut x = 10;
[INFO] [stdout]     |             ^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]    --> src/main.rs:132:13
[INFO] [stdout]     |
[INFO] [stdout] 132 |         let y = 5;
[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: `x`
[INFO] [stdout]    --> src/main.rs:141:13
[INFO] [stdout]     |
[INFO] [stdout] 141 |         let x = 15; // now local var 
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `specific`
[INFO] [stdout]    --> src/main.rs:207:9
[INFO] [stdout]     |
[INFO] [stdout] 207 |     let specific: [i32; 5] = [1,2,3,4,5]; // [type; length] (not actually required)
[INFO] [stdout]     |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_specific`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `default`
[INFO] [stdout]    --> src/main.rs:213:9
[INFO] [stdout]     |
[INFO] [stdout] 213 |     let default = [2; 100]; // a list of 2s with length of 100: [2,2,2,...]
[INFO] [stdout]     |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_default`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tokens`
[INFO] [stdout]    --> src/main.rs:261:9
[INFO] [stdout]     |
[INFO] [stdout] 261 |     let tokens: Vec<&str> = my_string.split("?").collect();
[INFO] [stdout]     |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_tokens`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `trimmed`
[INFO] [stdout]    --> src/main.rs:264:9
[INFO] [stdout]     |
[INFO] [stdout] 264 |     let trimmed = my_string.trim();
[INFO] [stdout]     |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_trimmed`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `my_vector1`
[INFO] [stdout]    --> src/main.rs:327:9
[INFO] [stdout]     |
[INFO] [stdout] 327 |     let my_vector1:Vec<i32> = Vec::new();
[INFO] [stdout]     |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_my_vector1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.38s
[INFO] running `Command { std: "docker" "inspect" "c54d0e6230001093b434dc1ef448b73a1d8cca69a41fbf85e263909c4fe436be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c54d0e6230001093b434dc1ef448b73a1d8cca69a41fbf85e263909c4fe436be", kill_on_drop: false }`
[INFO] [stdout] c54d0e6230001093b434dc1ef448b73a1d8cca69a41fbf85e263909c4fe436be
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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=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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "test" "--frozen" "--target" "x86_64-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] 93244ba675fe2ff70412b985597f68139f8b85ec4ff7e9b03f750b3ae7731779
[INFO] running `Command { std: "docker" "start" "-a" "93244ba675fe2ff70412b985597f68139f8b85ec4ff7e9b03f750b3ae7731779", kill_on_drop: false }`
[INFO] [stderr] warning: value assigned to `x` is never read
[INFO] [stderr]    --> src/main.rs:128:13
[INFO] [stderr]     |
[INFO] [stderr] 128 |     let mut x = 10;
[INFO] [stderr]     |             ^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `y`
[INFO] [stderr]    --> src/main.rs:132:13
[INFO] [stderr]     |
[INFO] [stderr] 132 |         let y = 5;
[INFO] [stderr]     |             ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]    --> src/main.rs:141:13
[INFO] [stderr]     |
[INFO] [stderr] 141 |         let x = 15; // now local var 
[INFO] [stderr]     |             ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `specific`
[INFO] [stderr]    --> src/main.rs:207:9
[INFO] [stderr]     |
[INFO] [stderr] 207 |     let specific: [i32; 5] = [1,2,3,4,5]; // [type; length] (not actually required)
[INFO] [stderr]     |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_specific`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `default`
[INFO] [stderr]    --> src/main.rs:213:9
[INFO] [stderr]     |
[INFO] [stderr] 213 |     let default = [2; 100]; // a list of 2s with length of 100: [2,2,2,...]
[INFO] [stderr]     |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_default`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `tokens`
[INFO] [stderr]    --> src/main.rs:261:9
[INFO] [stderr]     |
[INFO] [stderr] 261 |     let tokens: Vec<&str> = my_string.split("?").collect();
[INFO] [stderr]     |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_tokens`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `trimmed`
[INFO] [stderr]    --> src/main.rs:264:9
[INFO] [stderr]     |
[INFO] [stderr] 264 |     let trimmed = my_string.trim();
[INFO] [stderr]     |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_trimmed`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `my_vector1`
[INFO] [stderr]    --> src/main.rs:327:9
[INFO] [stderr]     |
[INFO] [stderr] 327 |     let my_vector1:Vec<i32> = Vec::new();
[INFO] [stderr]     |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_my_vector1`
[INFO] [stderr] 
[INFO] [stderr] warning: `hello-rust` (bin "hello-rust" test) generated 8 warnings
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/x86_64-unknown-linux-musl/debug/deps/hello_rust-7508084bc0206470)
[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" "93244ba675fe2ff70412b985597f68139f8b85ec4ff7e9b03f750b3ae7731779", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "93244ba675fe2ff70412b985597f68139f8b85ec4ff7e9b03f750b3ae7731779", kill_on_drop: false }`
[INFO] [stdout] 93244ba675fe2ff70412b985597f68139f8b85ec4ff7e9b03f750b3ae7731779