[INFO] cloning repository https://github.com/nsmryan/shadowcasting
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/nsmryan/shadowcasting" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnsmryan%2Fshadowcasting", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnsmryan%2Fshadowcasting'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d900f450d752c5dbb8d7538bf171f7d88c8e9fcc
[INFO] checking nsmryan/shadowcasting against try#23ffd2897cbb44320ca18dfe4d05dbacb37d55e0 for pr-115950
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnsmryan%2Fshadowcasting" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/nsmryan/shadowcasting on toolchain 23ffd2897cbb44320ca18dfe4d05dbacb37d55e0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+23ffd2897cbb44320ca18dfe4d05dbacb37d55e0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/nsmryan/shadowcasting
[INFO] finished tweaking git repo https://github.com/nsmryan/shadowcasting
[INFO] tweaked toml for git repo https://github.com/nsmryan/shadowcasting written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/nsmryan/shadowcasting 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" "+23ffd2897cbb44320ca18dfe4d05dbacb37d55e0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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@sha256:4f8da3c744d2da974e54ce020a79f4ad54313e914ebeaab8fc086f07e8d8b066" "/opt/rustwide/cargo-home/bin/cargo" "+23ffd2897cbb44320ca18dfe4d05dbacb37d55e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 852802943f9bd64c22ab6607a5c5af9ab657c4ee43f3579e4478172aae655a3b
[INFO] running `Command { std: "docker" "start" "-a" "852802943f9bd64c22ab6607a5c5af9ab657c4ee43f3579e4478172aae655a3b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "852802943f9bd64c22ab6607a5c5af9ab657c4ee43f3579e4478172aae655a3b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "852802943f9bd64c22ab6607a5c5af9ab657c4ee43f3579e4478172aae655a3b", kill_on_drop: false }`
[INFO] [stdout] 852802943f9bd64c22ab6607a5c5af9ab657c4ee43f3579e4478172aae655a3b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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@sha256:4f8da3c744d2da974e54ce020a79f4ad54313e914ebeaab8fc086f07e8d8b066" "/opt/rustwide/cargo-home/bin/cargo" "+23ffd2897cbb44320ca18dfe4d05dbacb37d55e0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0ad83cd6281ba0c905a831201c33c80f8f4a9c859d25444d4b5beae5c1b91103
[INFO] running `Command { std: "docker" "start" "-a" "0ad83cd6281ba0c905a831201c33c80f8f4a9c859d25444d4b5beae5c1b91103", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]    Compiling num-rational v0.3.0
[INFO] [stderr]     Checking symmetric-shadowcasting v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0506]: cannot assign to `row.start_slope` because it is borrowed
[INFO] [stdout]   --> src/shadowcast.rs:58:13
[INFO] [stdout]    |
[INFO] [stdout] 44 |     for tile in row.tiles() {
[INFO] [stdout]    |                 -----------
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 `row.start_slope` is borrowed here
[INFO] [stdout]    |                 borrow later used here
[INFO] [stdout] ...
[INFO] [stdout] 58 |             row.start_slope = slope(tile);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `row.start_slope` is assigned to here but it was already borrowed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0506`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `symmetric-shadowcasting` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0506]: cannot assign to `row.start_slope` because it is borrowed
[INFO] [stdout]   --> src/shadowcast.rs:58:13
[INFO] [stdout]    |
[INFO] [stdout] 44 |     for tile in row.tiles() {
[INFO] [stdout]    |                 -----------
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 `row.start_slope` is borrowed here
[INFO] [stdout]    |                 borrow later used here
[INFO] [stdout] ...
[INFO] [stdout] 58 |             row.start_slope = slope(tile);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `row.start_slope` is assigned to here but it was already borrowed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0506`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `symmetric-shadowcasting` (lib test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "0ad83cd6281ba0c905a831201c33c80f8f4a9c859d25444d4b5beae5c1b91103", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0ad83cd6281ba0c905a831201c33c80f8f4a9c859d25444d4b5beae5c1b91103", kill_on_drop: false }`
[INFO] [stdout] 0ad83cd6281ba0c905a831201c33c80f8f4a9c859d25444d4b5beae5c1b91103