[INFO] cloning repository https://github.com/Ragnyll/rust_variables
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Ragnyll/rust_variables" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRagnyll%2Frust_variables", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRagnyll%2Frust_variables'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b02e8595809a2dca3ba21af362c3cbb664c264de
[INFO] testing Ragnyll/rust_variables against master#62efba8a050c64249dab942951bb28f710208bc8 for pr-90799
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRagnyll%2Frust_variables" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Ragnyll/rust_variables on toolchain 62efba8a050c64249dab942951bb28f710208bc8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Ragnyll/rust_variables
[INFO] finished tweaking git repo https://github.com/Ragnyll/rust_variables
[INFO] tweaked toml for git repo https://github.com/Ragnyll/rust_variables written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/Ragnyll/rust_variables already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] acf39724f1b8de595dadfaef50e48978c8f6eb56494b13bbe88bc6bbb9a01d3a
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "acf39724f1b8de595dadfaef50e48978c8f6eb56494b13bbe88bc6bbb9a01d3a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "acf39724f1b8de595dadfaef50e48978c8f6eb56494b13bbe88bc6bbb9a01d3a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "acf39724f1b8de595dadfaef50e48978c8f6eb56494b13bbe88bc6bbb9a01d3a", kill_on_drop: false }`
[INFO] [stdout] acf39724f1b8de595dadfaef50e48978c8f6eb56494b13bbe88bc6bbb9a01d3a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b865f4a6f67f9a6003adc31102611682c2c5465127f01ae0633a155593bf24c4
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "b865f4a6f67f9a6003adc31102611682c2c5465127f01ae0633a155593bf24c4", kill_on_drop: false }`
[INFO] [stderr]    Compiling variables v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `difference`
[INFO] [stdout]   --> src/main.rs:41:9
[INFO] [stdout]    |
[INFO] [stdout] 41 |     let difference = 95.5 - 4.3;
[INFO] [stdout]    |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_difference`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `product`
[INFO] [stdout]   --> src/main.rs:44:9
[INFO] [stdout]    |
[INFO] [stdout] 44 |     let product = 4 * 30;
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_product`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `quotient`
[INFO] [stdout]   --> src/main.rs:47:9
[INFO] [stdout]    |
[INFO] [stdout] 47 |     let quotient = 56.7 / 32.2;
[INFO] [stdout]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_quotient`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `remainder`
[INFO] [stdout]   --> src/main.rs:50:9
[INFO] [stdout]    |
[INFO] [stdout] 50 |     let remainder = 43 % 5;
[INFO] [stdout]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_remainder`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> src/main.rs:53:9
[INFO] [stdout]    |
[INFO] [stdout] 53 |     let t = true; // without explicit type annotation
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> src/main.rs:55:9
[INFO] [stdout]    |
[INFO] [stdout] 55 |     let f: bool = false; // with explicit type annotation
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/main.rs:59:10
[INFO] [stdout]    |
[INFO] [stdout] 59 |     let (x, y, z) = tup;
[INFO] [stdout]    |          ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `z`
[INFO] [stdout]   --> src/main.rs:59:16
[INFO] [stdout]    |
[INFO] [stdout] 59 |     let (x, y, z) = tup;
[INFO] [stdout]    |                ^ help: if this is intentional, prefix it with an underscore: `_z`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `first`
[INFO] [stdout]   --> src/main.rs:67:9
[INFO] [stdout]    |
[INFO] [stdout] 67 |     let first = months[0];
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_first`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.77s
[INFO] running `Command { std: "docker" "inspect" "b865f4a6f67f9a6003adc31102611682c2c5465127f01ae0633a155593bf24c4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b865f4a6f67f9a6003adc31102611682c2c5465127f01ae0633a155593bf24c4", kill_on_drop: false }`
[INFO] [stdout] b865f4a6f67f9a6003adc31102611682c2c5465127f01ae0633a155593bf24c4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 75fd023d5b17bce065c9b77c623b27118a486a041f75fb2c60f3876155fa88c5
[INFO] running `Command { std: "docker" "start" "-a" "75fd023d5b17bce065c9b77c623b27118a486a041f75fb2c60f3876155fa88c5", kill_on_drop: false }`
[INFO] [stderr]    Compiling variables v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `difference`
[INFO] [stdout]   --> src/main.rs:41:9
[INFO] [stdout]    |
[INFO] [stdout] 41 |     let difference = 95.5 - 4.3;
[INFO] [stdout]    |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_difference`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `product`
[INFO] [stdout]   --> src/main.rs:44:9
[INFO] [stdout]    |
[INFO] [stdout] 44 |     let product = 4 * 30;
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_product`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `quotient`
[INFO] [stdout]   --> src/main.rs:47:9
[INFO] [stdout]    |
[INFO] [stdout] 47 |     let quotient = 56.7 / 32.2;
[INFO] [stdout]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_quotient`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `remainder`
[INFO] [stdout]   --> src/main.rs:50:9
[INFO] [stdout]    |
[INFO] [stdout] 50 |     let remainder = 43 % 5;
[INFO] [stdout]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_remainder`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> src/main.rs:53:9
[INFO] [stdout]    |
[INFO] [stdout] 53 |     let t = true; // without explicit type annotation
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> src/main.rs:55:9
[INFO] [stdout]    |
[INFO] [stdout] 55 |     let f: bool = false; // with explicit type annotation
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/main.rs:59:10
[INFO] [stdout]    |
[INFO] [stdout] 59 |     let (x, y, z) = tup;
[INFO] [stdout]    |          ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `z`
[INFO] [stdout]   --> src/main.rs:59:16
[INFO] [stdout]    |
[INFO] [stdout] 59 |     let (x, y, z) = tup;
[INFO] [stdout]    |                ^ help: if this is intentional, prefix it with an underscore: `_z`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `first`
[INFO] [stdout]   --> src/main.rs:67:9
[INFO] [stdout]    |
[INFO] [stdout] 67 |     let first = months[0];
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_first`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.71s
[INFO] running `Command { std: "docker" "inspect" "75fd023d5b17bce065c9b77c623b27118a486a041f75fb2c60f3876155fa88c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "75fd023d5b17bce065c9b77c623b27118a486a041f75fb2c60f3876155fa88c5", kill_on_drop: false }`
[INFO] [stdout] 75fd023d5b17bce065c9b77c623b27118a486a041f75fb2c60f3876155fa88c5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 3391f6b935a5134a8c603d88c08f03842ab4f68f5670d609a5fcc8d5c6011469
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "3391f6b935a5134a8c603d88c08f03842ab4f68f5670d609a5fcc8d5c6011469", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stdout] 
[INFO] [stderr] warning: unused variable: `difference`
[INFO] [stdout] running 0 tests
[INFO] [stderr]   --> src/main.rs:41:9
[INFO] [stdout] 
[INFO] [stderr]    |
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr] 41 |     let difference = 95.5 - 4.3;
[INFO] [stdout] 
[INFO] [stderr]    |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_difference`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `product`
[INFO] [stderr]   --> src/main.rs:44:9
[INFO] [stderr]    |
[INFO] [stderr] 44 |     let product = 4 * 30;
[INFO] [stderr]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_product`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `quotient`
[INFO] [stderr]   --> src/main.rs:47:9
[INFO] [stderr]    |
[INFO] [stderr] 47 |     let quotient = 56.7 / 32.2;
[INFO] [stderr]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_quotient`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `remainder`
[INFO] [stderr]   --> src/main.rs:50:9
[INFO] [stderr]    |
[INFO] [stderr] 50 |     let remainder = 43 % 5;
[INFO] [stderr]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_remainder`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `t`
[INFO] [stderr]   --> src/main.rs:53:9
[INFO] [stderr]    |
[INFO] [stderr] 53 |     let t = true; // without explicit type annotation
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `f`
[INFO] [stderr]   --> src/main.rs:55:9
[INFO] [stderr]    |
[INFO] [stderr] 55 |     let f: bool = false; // with explicit type annotation
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> src/main.rs:59:10
[INFO] [stderr]    |
[INFO] [stderr] 59 |     let (x, y, z) = tup;
[INFO] [stderr]    |          ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `z`
[INFO] [stderr]   --> src/main.rs:59:16
[INFO] [stderr]    |
[INFO] [stderr] 59 |     let (x, y, z) = tup;
[INFO] [stderr]    |                ^ help: if this is intentional, prefix it with an underscore: `_z`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `first`
[INFO] [stderr]   --> src/main.rs:67:9
[INFO] [stderr]    |
[INFO] [stderr] 67 |     let first = months[0];
[INFO] [stderr]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_first`
[INFO] [stderr] 
[INFO] [stderr] warning: `variables` (bin "variables" test) generated 9 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.77s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/variables-70c2e514e0f142d6)
[INFO] running `Command { std: "docker" "inspect" "3391f6b935a5134a8c603d88c08f03842ab4f68f5670d609a5fcc8d5c6011469", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3391f6b935a5134a8c603d88c08f03842ab4f68f5670d609a5fcc8d5c6011469", kill_on_drop: false }`
[INFO] [stdout] 3391f6b935a5134a8c603d88c08f03842ab4f68f5670d609a5fcc8d5c6011469