[INFO] cloning repository https://github.com/DhruvDh/advection
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/DhruvDh/advection" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDhruvDh%2Fadvection", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDhruvDh%2Fadvection'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 47d3536f65b72261ab6e435ec80a519570a08c43
[INFO] checking DhruvDh/advection against master#33fdb797f59421c7bbecaa4588ed5d7a31a9494a for pr-87190-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDhruvDh%2Fadvection" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/DhruvDh/advection on toolchain 33fdb797f59421c7bbecaa4588ed5d7a31a9494a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/DhruvDh/advection
[INFO] finished tweaking git repo https://github.com/DhruvDh/advection
[INFO] tweaked toml for git repo https://github.com/DhruvDh/advection written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/DhruvDh/advection already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 78594777f7dca1419e3428068e301f6ad2a390c66865a4831f09c6bc44736503
[INFO] running `Command { std: "docker" "start" "-a" "78594777f7dca1419e3428068e301f6ad2a390c66865a4831f09c6bc44736503", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "78594777f7dca1419e3428068e301f6ad2a390c66865a4831f09c6bc44736503", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "78594777f7dca1419e3428068e301f6ad2a390c66865a4831f09c6bc44736503", kill_on_drop: false }`
[INFO] [stdout] 78594777f7dca1419e3428068e301f6ad2a390c66865a4831f09c6bc44736503
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b996d2ef7b2bd4707d9ea0b7ee95187348b2aa7a46889218b2a459fea827170f
[INFO] running `Command { std: "docker" "start" "-a" "b996d2ef7b2bd4707d9ea0b7ee95187348b2aa7a46889218b2a459fea827170f", kill_on_drop: false }`
[INFO] [stderr]     Checking advection v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: The usage of Script Group `Greek` in this crate consists solely of mixed script confusables
[INFO] [stdout]   --> src/main.rs:18:9
[INFO] [stdout]    |
[INFO] [stdout] 18 |     let α = v * dt/(2.0 * dx);
[INFO] [stdout]    |         ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(mixed_script_confusables)]` on by default
[INFO] [stdout]    = note: The usage includes 'α' (U+03B1).
[INFO] [stdout]    = note: Please recheck to make sure their usages are indeed what you want.
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: The usage of Script Group `Greek` in this crate consists solely of mixed script confusables
[INFO] [stdout]   --> src/main.rs:18:9
[INFO] [stdout]    |
[INFO] [stdout] 18 |     let α = v * dt/(2.0 * dx);
[INFO] [stdout]    |         ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(mixed_script_confusables)]` on by default
[INFO] [stdout]    = note: The usage includes 'α' (U+03B1).
[INFO] [stdout]    = note: Please recheck to make sure their usages are indeed what you want.
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `current_time`
[INFO] [stdout]   --> src/main.rs:32:13
[INFO] [stdout]    |
[INFO] [stdout] 32 |         let current_time = timestep as f32 * dt;
[INFO] [stdout]    |             ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_current_time`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `non_ascii_idents` has been stable since 1.53.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(non_ascii_idents)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `current_time`
[INFO] [stdout]   --> src/main.rs:32:13
[INFO] [stdout]    |
[INFO] [stdout] 32 |         let current_time = timestep as f32 * dt;
[INFO] [stdout]    |             ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_current_time`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `non_ascii_idents` has been stable since 1.53.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(non_ascii_idents)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `N` should have a snake case name
[INFO] [stdout]  --> src/main.rs:6:14
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn advection(N: usize, dt: f32) -> f32 {
[INFO] [stdout]   |              ^ help: convert the identifier to snake case: `n`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `N` should have a snake case name
[INFO] [stdout]  --> src/main.rs:6:14
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn advection(N: usize, dt: f32) -> f32 {
[INFO] [stdout]   |              ^ help: convert the identifier to snake case: `n`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.20s
[INFO] running `Command { std: "docker" "inspect" "b996d2ef7b2bd4707d9ea0b7ee95187348b2aa7a46889218b2a459fea827170f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b996d2ef7b2bd4707d9ea0b7ee95187348b2aa7a46889218b2a459fea827170f", kill_on_drop: false }`
[INFO] [stdout] b996d2ef7b2bd4707d9ea0b7ee95187348b2aa7a46889218b2a459fea827170f