[INFO] cloning repository https://github.com/basalt79/rust_basic
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/basalt79/rust_basic" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbasalt79%2Frust_basic", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbasalt79%2Frust_basic'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1887ef24d2799a34696340fd9da7ab99309d382a
[INFO] testing basalt79/rust_basic against try#d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2 for pr-86479
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbasalt79%2Frust_basic" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/basalt79/rust_basic on toolchain d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/basalt79/rust_basic
[INFO] finished tweaking git repo https://github.com/basalt79/rust_basic
[INFO] tweaked toml for git repo https://github.com/basalt79/rust_basic written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/basalt79/rust_basic already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 57293fae5b9d390cb713102b3f85c40756c679c714fa74a7c32aee0ae3c66cca
[INFO] running `Command { std: "docker" "start" "-a" "57293fae5b9d390cb713102b3f85c40756c679c714fa74a7c32aee0ae3c66cca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "57293fae5b9d390cb713102b3f85c40756c679c714fa74a7c32aee0ae3c66cca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "57293fae5b9d390cb713102b3f85c40756c679c714fa74a7c32aee0ae3c66cca", kill_on_drop: false }`
[INFO] [stdout] 57293fae5b9d390cb713102b3f85c40756c679c714fa74a7c32aee0ae3c66cca
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7926b6c28498ae6a33441edc1607a8a7d469f9c0843df5d5bfb58c677285c167
[INFO] running `Command { std: "docker" "start" "-a" "7926b6c28498ae6a33441edc1607a8a7d469f9c0843df5d5bfb58c677285c167", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust_basic v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `count`
[INFO] [stdout]  --> src/loops.rs:4:11
[INFO] [stdout]   |
[INFO] [stdout] 4 |   let mut count = 0;
[INFO] [stdout]   |           ^^^^^ help: if this is intentional, prefix it with an underscore: `_count`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `arr2`
[INFO] [stdout]  --> src/pointer_ref.rs:6:7
[INFO] [stdout]   |
[INFO] [stdout] 6 |   let arr2 = arr1;
[INFO] [stdout]   |       ^^^^ help: if this is intentional, prefix it with an underscore: `_arr2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/loops.rs:4:7
[INFO] [stdout]   |
[INFO] [stdout] 4 |   let mut count = 0;
[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: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.79s
[INFO] running `Command { std: "docker" "inspect" "7926b6c28498ae6a33441edc1607a8a7d469f9c0843df5d5bfb58c677285c167", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7926b6c28498ae6a33441edc1607a8a7d469f9c0843df5d5bfb58c677285c167", kill_on_drop: false }`
[INFO] [stdout] 7926b6c28498ae6a33441edc1607a8a7d469f9c0843df5d5bfb58c677285c167
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0ca1c3c11eb09ed2b38d8a8cb768c5b3c85459346fc19dfb59f3c4e05c3f4465
[INFO] running `Command { std: "docker" "start" "-a" "0ca1c3c11eb09ed2b38d8a8cb768c5b3c85459346fc19dfb59f3c4e05c3f4465", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust_basic v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `count`
[INFO] [stdout]  --> src/loops.rs:4:11
[INFO] [stdout]   |
[INFO] [stdout] 4 |   let mut count = 0;
[INFO] [stdout]   |           ^^^^^ help: if this is intentional, prefix it with an underscore: `_count`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `arr2`
[INFO] [stdout]  --> src/pointer_ref.rs:6:7
[INFO] [stdout]   |
[INFO] [stdout] 6 |   let arr2 = arr1;
[INFO] [stdout]   |       ^^^^ help: if this is intentional, prefix it with an underscore: `_arr2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/loops.rs:4:7
[INFO] [stdout]   |
[INFO] [stdout] 4 |   let mut count = 0;
[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: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.34s
[INFO] running `Command { std: "docker" "inspect" "0ca1c3c11eb09ed2b38d8a8cb768c5b3c85459346fc19dfb59f3c4e05c3f4465", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0ca1c3c11eb09ed2b38d8a8cb768c5b3c85459346fc19dfb59f3c4e05c3f4465", kill_on_drop: false }`
[INFO] [stdout] 0ca1c3c11eb09ed2b38d8a8cb768c5b3c85459346fc19dfb59f3c4e05c3f4465
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] e01d97c89bfb701a62260f6b7de9297bc4e2a386246ae17cf149bbdb052d2bc8
[INFO] running `Command { std: "docker" "start" "-a" "e01d97c89bfb701a62260f6b7de9297bc4e2a386246ae17cf149bbdb052d2bc8", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `count`
[INFO] [stderr]  --> src/loops.rs:4:11
[INFO] [stderr]   |
[INFO] [stderr] 4 |   let mut count = 0;
[INFO] [stderr]   |           ^^^^^ help: if this is intentional, prefix it with an underscore: `_count`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `arr2`
[INFO] [stderr]  --> src/pointer_ref.rs:6:7
[INFO] [stderr]   |
[INFO] [stderr] 6 |   let arr2 = arr1;
[INFO] [stderr]   |       ^^^^ help: if this is intentional, prefix it with an underscore: `_arr2`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> src/loops.rs:4:7
[INFO] [stderr]   |
[INFO] [stderr] 4 |   let mut count = 0;
[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: `rust_basic` (bin "rust_basic" test) generated 3 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/rust_basic-d7647135216d6620)
[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" "e01d97c89bfb701a62260f6b7de9297bc4e2a386246ae17cf149bbdb052d2bc8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e01d97c89bfb701a62260f6b7de9297bc4e2a386246ae17cf149bbdb052d2bc8", kill_on_drop: false }`
[INFO] [stdout] e01d97c89bfb701a62260f6b7de9297bc4e2a386246ae17cf149bbdb052d2bc8